JP2019093953A - Temperature control system of power storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: In a temperature control system for taking in air from an air intake and adjusting the temperature of a power storage device using the taken-in air, a large object (such as a human body or luggage) is present near the air intake. Even if the temperature of the storage device is properly adjusted.
A controller of a temperature control system satisfies an air volume increase condition including conditions A to C as necessary conditions (YES in step S12, NO in step S22, YES in step S24, NO in step S25, and step S26). In the case of YES), the contact ratio of the intake port is smaller than the first threshold Th1 (YES in step S12), and the air volume increase condition is not satisfied (YES in step S22, NO in step S24, step The air volume to the power storage device is configured to be increased more than in the case of YES in S25 or NO in step S26.
[Selected figure] Figure 6

Description

  The present disclosure relates to a temperature control system for a power storage device, and more particularly to a temperature control system that takes in air from an air intake and controls the temperature of the power storage device using the air.

  The temperature control system of the power storage device described in Japanese Patent Laid-Open No. 2014-72182 (Patent Document 1) is mounted on a vehicle, takes in the air inside the car from the intake port, and utilizes the taken-in air to obtain the temperature of the power storage device. Is configured to adjust. The temperature control system includes an intake duct for guiding the air taken in from the intake port to the power storage device, and a filter provided inside the intake duct to block passage of foreign matter. Foreign matter in the air is trapped by the filter before the air is supplied to the storage device. However, if foreign matter is clogged in the filter, it becomes difficult to supply air to the power storage device, and it becomes difficult to properly adjust the temperature of the power storage device. Therefore, in the temperature control system described in Patent Document 1, in order to grasp the temperature control capability of the system, the amount of clogging of foreign matter with respect to the filter is estimated.

JP, 2014-72182, A

  In the temperature control system of the storage device, the factor that reduces the temperature control capability is not limited to filter clogging. For example, if the load is placed in contact with the air inlet, and the load blocks a portion of the air inlet, it will be difficult to take in air from the air inlet and the system's ability to regulate temperature will be reduced. In addition, even if the air intake is not blocked, if a large load is placed near the air intake, air may not be easily taken in from the air intake, and the temperature control capability of the system may be reduced.

  The present disclosure has been made to achieve such an object, and its object is to take in air from an air intake and use the taken-in air to adjust the temperature of a power storage device. Even when there is a large object (such as a human body or a luggage) in the vicinity, the temperature of the storage device is properly adjusted.

  The temperature control system of a storage device according to the present disclosure is a temperature control system of a storage device that takes in air from an inlet and adjusts the temperature of the storage device using the taken-in air, and includes a contact ratio detection device, an object A size detection device, a distance measurement device, a blower, and a control device are provided.

  The contact ratio detection device is configured to detect the ratio of an area in contact with an object in the area around the air inlet (hereinafter, may be referred to as a “contact ratio”). The object size detection device is configured to detect the size of the object in a detection range in front of the air inlet. The distance measuring device is configured to measure the distance between the air inlet and the object in front of the air inlet. The blower is configured to blow air taken in from the air intake to the power storage device. The control device is configured to change the air flow rate of the air to the power storage device by controlling the blower.

  When the predetermined condition is satisfied, the control device has a contact ratio detected by the contact ratio detection device smaller than the first threshold (Th1), and is more than when the predetermined condition is not satisfied. The blower is controlled to increase the air flow to the power storage device. The predetermined condition is that the object size detection device detects that the contact ratio detected by the contact ratio detection device is smaller than the first threshold (Th1) (hereinafter, may be referred to as “condition A”). That the size of the object is larger than the second threshold (Th2) (hereinafter sometimes referred to as "condition B"), and the distance measured by the distance measuring device is the third threshold (Th3) It is included as a requisite condition that it is smaller (hereinafter sometimes referred to as "condition C"). The first to third threshold values can be set arbitrarily. Each of the first to third threshold values may be independently a fixed value, or may be variable according to the state of the power storage device or the like.

  In the above-mentioned temperature control system, the temperature of the power storage device is adjusted by taking in air from the air intake port and blowing the air to the power storage device by the air blower. In such a temperature control system, when an object (such as luggage) is placed near the air inlet, air may not be easily taken in from the air inlet, and the temperature control capability of the system may be reduced. Here, the object does not mean excluding the living body, and a human body and the like are also included in the object. When an object is present in front of the air inlet, the object interrupts the flow of air and the pressure loss increases. As a result, the air flow rate to the power storage device is reduced, which in turn reduces the temperature control capability of the system. The inventor of the present application paid attention to the following first and second situations as situations where the volume of air to the power storage device is reduced by an object present in the vicinity of the intake port.

  The first situation is a situation where the rate at which the air intake is blocked by an object in contact with the air intake is high. The second situation is a situation in which a large object is present in the vicinity of the intake port although the blockage ratio of the intake port is not large.

  In the storage battery temperature control system of the present disclosure, the status of the system can be determined based on the success or failure of the above conditions A to C. Specifically, if the condition A is not satisfied, it is determined that the system is in the first state. When all of the conditions A to C are satisfied, it is determined that the system is in the second state. In addition, when the condition A is satisfied and at least one of the condition B and the condition C is not satisfied, the system is not in any of the first and second situations (hereinafter, “third situation”) (Which may be referred to as For example, when the object existing in front of the intake port is small, the condition B is not satisfied, so that it is determined that the system is in the third situation. Further, when an object is present only at a position far from the intake port, the condition C is not satisfied, so it is determined that the system is in the third situation. Further, when there is no object at all in front of the intake port, it is determined that the system is in the third situation because neither condition B nor C is satisfied. Hereinafter, the time when the system is in the third situation may be referred to as "during normal operation".

  The control device in the temperature control system of the power storage device of the present disclosure is a predetermined condition (hereinafter referred to as “air volume increase condition”) including the conditions A to C (that is, that the system is in the second state) as a necessary condition. Than when the condition A is satisfied and at least one of the condition B and the condition C is not satisfied (that is, the system is in the third situation). It is configured to increase the air flow to the power storage device. The control device can increase the air volume of the air to the power storage device by increasing the driving amount of the blower (for example, increasing the rotational speed of the impeller of the blower). This makes it possible to properly adjust the temperature of the power storage device even when there is a large object (such as a human body or luggage) in the vicinity of the intake port.

  The sufficient condition for the air volume increase condition to be satisfied may be only that all of the conditions A to C are satisfied, or may be that another condition is satisfied in addition to the conditions A to C. For example, all of the conditions A to C are satisfied (that is, the system is in the second state), the power storage device is in a state requiring temperature control, and the temperature is properly adjusted by the increase of the air volume. The air volume increase condition may be established when the air volume can be adjusted. The state of the storage device requiring temperature adjustment is, for example, a state in which the temperature of the storage device is excessively high (a state higher than the allowable upper limit) or a state in which the temperature of the storage device is excessively low (lower than the allowable lower limit) State) is considered. Further, as a state of the power storage device in which the temperature can not be properly adjusted due to the increase of the air volume, a state where the load of the power storage device is excessively large (a state larger than the allowable upper limit) can be considered.

  In addition, even when the system is in the first state, the control device is configured to increase the air flow rate to the storage device more than when the system is in the third state. Good. However, when the system is in the first state, the closing rate of the intake port is large, and the temperature of the storage device may not be properly adjusted even if the air blower is controlled to increase the air volume. Because of this, it is preferable to perform notification processing to notify the user that the intake port is blocked.

  According to the configuration of the temperature control system of the storage device of the present disclosure, in the temperature control system that takes in air from the intake port and adjusts the temperature of the storage device using the taken-in air, a large object Even if the body, the package, etc.) exist, it is possible to properly adjust the temperature of the storage device.

FIG. 1 shows a basic configuration of a temperature control system of a power storage device according to an embodiment. FIG. 1 is a diagram showing a schematic configuration of a vehicle to which a temperature control system for a power storage device according to an embodiment is applied. FIG. 3 is a view showing a bezel provided at an intake port in the vehicle shown in FIG. 2; FIG. 2 shows a temperature control system in the absence of an object in front of the air inlet; FIG. 1 shows a temperature control system in the presence of an object in front of an air inlet; It is a flowchart explaining the processing procedure of air volume control. It is a figure which shows an example of a contact ratio-increase air volume corresponding information. It is a figure for demonstrating the principle from which the magnitude | size of an object is detected. It is a figure for demonstrating the principle by which the distance of an inlet and an object is detected. It is a figure for demonstrating the setting method of the threshold value used by large and small judgment of a battery load. It is a figure which shows an example of battery type-increase air volume corresponding | compatible information. It is a figure which shows the example in which the inlet of the temperature control system was provided in the seat side. It is a figure which shows the position of the laser sensor in the example shown in FIG.

  Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference characters and description thereof will not be repeated.

  FIG. 1 is a diagram showing a basic configuration of a temperature control system of a power storage device according to the present embodiment.

  Referring to FIG. 1, the temperature control system 100 includes an intake duct 10 a, a blower 13, a connection duct 10 b, an exhaust duct 10 c, a battery pack 14, and a controller 30. The temperature control system 100 further includes a pressure sensor 21, a length measuring sensor 22, a laser sensor 23, a rotation sensor 24, an intake air temperature sensor 25, a current sensor 26, a battery temperature sensor 27, and a display 40. Further equipped.

  The intake duct 10a has an intake port P1 for taking in air used for temperature control of the power storage device. A bezel 11 is provided at the intake port P1. The bezel 11 has a function of taking in air from the intake port P1 to the inside of the intake duct 10a, and a function of suppressing foreign matter from entering the inside of the intake duct 10a. The air taken in from the air intake port P1 is guided to the battery pack 14 (power storage device) by the air intake duct 10a and the connection duct 10b.

  Further, a filter 12 is provided inside the intake duct 10a (for example, in the vicinity of the bezel 11). The filter 12 is configured to block the passage of foreign matter. When air entering the intake duct 10a through the bezel 11 passes through the filter 12 (that is, before air is supplied to the battery pack 14), the filter 12 removes foreign substances (dust and the like) in the air.

  The filter 12 has, for example, a mesh structure and captures foreign matter. The mesh structure of the filter 12 makes it easy for the filter 12 to capture lint etc. dropped from clothes or the like. The filter 12 can be taken out from the air inlet P1 by removing the bezel 11 from the air inlet P1. The position of the filter 12 is not limited to the position shown in FIG. 1 and can be arbitrarily changed. However, in order to prevent foreign matter from adhering to the blower 13, it is preferable that the filter 12 be disposed closer to the intake port P <b> 1 than the blower 13.

  The intake duct 10 a is connected to the blower 13. In addition, the blower 13 is connected to the battery pack 14 via the connection duct 10b. The blower 13 includes an impeller and imparts energy to the gas by rotational movement of the impeller to generate an air flow. The rotation of the impeller of the blower 13 generates negative pressure, and air outside the intake duct 10 a is taken into the intake duct 10 a via the bezel 11. Then, the air taken into the air intake duct 10 a passes through the connection duct 10 b and is sent to the battery pack 14. Thus, the blower 13 is configured to blow the air taken in from the air inlet P1 to the battery pack 14 (power storage device). For example, a fan or a blower can be employed as the blower 13. The blower 13 operates in accordance with the drive signal from the controller 30.

  The blower 13 is configured such that the amount of air flow (the amount of air flow) increases as the rotational speed of the impeller increases. The blower 13 is provided with a rotation sensor 24. The rotation sensor 24 detects the rotational speed of the impeller of the blower 13 and outputs the detected value (a signal indicating the rotational speed) to the controller 30. The controller 30 can control the rotational speed of the impeller of the blower 13 to a target value by generating a drive signal to the blower 13 based on the detection value of the rotation sensor 24. Then, when the rotational speed of the impeller of the blower 13 is changed, the air volume of the air to the battery pack 14 changes to a value corresponding to the rotational speed. The controller 30 can change the air volume of the air to the battery pack 14 by controlling the blower 13.

  The battery pack 14 is configured to include a battery as a power storage device and a case for housing the battery. The battery is, for example, a rechargeable secondary battery. As a secondary battery, for example, a lithium ion battery or a nickel hydrogen battery can be adopted. The battery pack 14 may include an assembled battery composed of a plurality of cells (secondary batteries) connected in series and / or in parallel. In addition, a large capacity capacitor or the like can also be adopted as the power storage device.

  A passage for air to flow (hereinafter, referred to as “air flow passage”) is formed in the housing of the battery pack 14. One end and the other end of the air flow passage are connected to the connection duct 10b and the exhaust duct 10c, respectively. The air sent out by the blower 13 enters the air flow passage from the connection duct 10b and flows through the air flow passage to the exhaust duct 10c. When air flows in the air flow passage, heat exchange takes place between the air and the battery. This heat exchange may be performed directly between the air and the battery, or may be performed via a member present between the air and the battery. Such heat exchange can bring the temperature of the battery close to the temperature of air. For example, the battery can be warmed by providing the battery with air at a higher temperature than the battery. In addition, the battery can be cooled by supplying air having a temperature lower than that of the battery to the battery. The airflow path (path for moving air) of the battery pack 14 can be set arbitrarily. However, in order to enhance the efficiency of temperature control, it is preferable that the air and the battery come into contact when the air flows in the air flow passage.

  An intake air temperature sensor 25 is provided in the connection duct 10b. The intake air temperature sensor 25 detects the temperature of air flowing in the connection duct 10 b and outputs the detected value (a signal indicating the temperature of air) to the controller 30. The intake air temperature sensor 25 is disposed in the vicinity of the air intake of the air flow passage of the battery pack 14. The intake air temperature sensor 25 detects the temperature of the air supplied to the battery pack 14.

  The battery pack 14 is provided with a current sensor 26. The current sensor 26 detects the current of the battery in the battery pack 14, and outputs the detected value (a signal indicating the current of the battery) to the controller 30.

  The battery pack 14 is provided with a battery temperature sensor 27. The battery temperature sensor 27 detects the temperature of the battery in the battery pack 14 and outputs the detected value (a signal indicating the temperature of the battery) to the controller 30. A plurality of temperature sensors may be used to detect the temperature at a plurality of locations of the battery. When a plurality of detection values (battery temperature) are input to the controller 30, the controller 30 may use a representative value (average value, median value, maximum value, etc.) of the plurality of detection values as the battery temperature it can.

  The exhaust duct 10c has an exhaust port P2 for exhausting the air in the exhaust duct 10c. The air subjected to heat exchange with the battery in the battery pack 14 flows in the exhaust duct 10c toward the exhaust port P2 and is exhausted from the exhaust port P2.

  The controller 30 is configured to include a central processing unit (CPU) as an arithmetic device, a storage device, and an input / output port for inputting / outputting various signals (all not shown). The storage device includes a RAM (Random Access Memory) as a working memory, and a storage for storage (ROM (Read Only Memory), a rewritable non-volatile memory, etc.). The controller 30 functions as a control device. Various controls are executed by the CPU executing programs stored in the storage device. The various controls performed by the controller 30 are not limited to software processing, and may be processed by dedicated hardware (electronic circuits).

  The storage device of the controller 30 may further store information of the battery in the battery pack 14 (type of battery, capacity, internal resistance, thickness of electrode, weight per unit area, etc.). Further, the storage device of the controller 30 may further store correspondence information used to control the blower 13. For example, information indicating the relationship between the state (battery temperature, battery load, etc.) of the battery (power storage device) in the battery pack 14 and the driving amount of the blower 13 (rotational speed of the impeller) The air volume correspondence information may be obtained in advance by experiments or the like and stored in the storage device of the controller 30. In addition, the storage device of the controller 30 may further store correspondence information used in air volume increase control described later. Each correspondence information may be a map, a table, an equation, or a model. Further, each correspondence information may be configured by combining a plurality of maps and the like.

  Signals from various sensors are input to the controller 30. Not only the signals from the rotation sensor 24, the intake temperature sensor 25, the current sensor 26, and the battery temperature sensor 27 described above, but also the signals from the pressure sensor 21, the length measuring sensor 22, and the laser sensor 23 are input to the controller 30. Ru. The specific example of the place where the pressure sensor 21, the length measurement sensor 22, and the laser sensor 23 are installed is mentioned later.

  The controller 30 controls each device using the signal of each sensor. For example, the controller 30 outputs a drive signal of the blower 13 to control the blower 13. Moreover, the controller 30 outputs the information which should be alert | reported to a user to the display 40 as an alerting | reporting apparatus.

  The display 40 is arranged, for example, at a position visible to the user, and is configured to display information input from the controller 30 (such as warning information to the user). In addition, the display 40 may have a speaker function.

  The temperature control system 100 of the power storage device shown in FIG. 1 is mounted and used on a vehicle together with, for example, a battery pack 14. FIG. 2 is a view showing a schematic configuration of a vehicle 200 to which the temperature control system 100 according to this embodiment is applied.

  Referring to FIG. 2, a vehicle 200 includes a front seat 41, a rear seat 42, a package tray 43, and a temperature control system 100. Although only a part of the temperature control system 100 is shown in FIG. 2, the vehicle 200 includes all of the temperature control system 100 shown in FIG. 1.

  The front seat 41 includes a seat cushion 41a and a seat back 41b. The rear seat 42 includes a seat cushion 42a and a seat back 42b. The temperature of the air in the passenger compartment corresponding to the passenger space is adjusted to about 15 ° C. to 30 ° C. by an air conditioning system (not shown).

  The package tray 43 is configured to shield the load in the cargo compartment from the outside by closing the gap between the seat back 42 b of the rear seat 42 and the back door (not shown). In addition, the package tray 43 is configured to be rotatable around the front end of the vehicle. By lifting the rear end side of the package tray 43, the luggage can be easily taken in and out from the rear of the vehicle with respect to the loading space (the space below the package tray 43).

  The intake port P1 of the temperature control system 100, the battery pack 14 and the like are disposed below (vertically) the rear seat 42 in the vehicle compartment. The intake port P1 opens in the foot space between the front seat 41 and the rear seat 42.

  FIG. 3 is a view showing the bezel 11 provided in the intake port P1. Referring to FIG. 3, the bezel 11 includes an outer frame portion 11 a and an intake portion 11 b. The outer frame portion 11a is formed so as to surround the air intake portion 11b. The intake portion 11 b includes a grid member and a plurality of openings formed between the grid members. By generating negative pressure by the blower 13, external air is taken into the inside of the intake duct 10a through the opening of the intake portion 11b. At this time, intrusion of foreign matter into the inside of the intake duct 10a is suppressed by the lattice member of the intake portion 11b.

  As shown in FIG. 3, the outer frame portion 11 a is a rectangular frame, and a plurality of pressure sensors 21 are provided on the surface area of the outer frame portion 11 a along the shape of the frame. The outer frame portion 11a includes two longitudinally extending portions and two laterally extending portions. By arranging nine pressure sensors 21 in each of the two longitudinal parts and six pressure sensors 21 in each of the two lateral parts, a total of 30 pressure sensors 21 are provided. It is provided in the outer frame part 11a. The pressure sensor 21 detects the pressure applied to the pressure sensor 21. The detection values (signals indicating pressure) of the 30 pressure sensors 21 are all input to the controller 30. The controller 30 determines, based on these signals, how many of the 30 pressure sensors 21 provided in the outer frame portion 11 a have sensed a pressure equal to or higher than a reference value. The reference value used for this determination is that the pressure detected by the pressure sensor 21 installed at the contact site is greater than or equal to the reference value when an object (body of the occupant, luggage, etc.) is in contact with the outer frame portion 11a. It is set to be Thirty pressure sensors 21 are installed approximately equally on the surface area of the outer frame portion 11a. The ratio of the number of pressure sensors 21 that detected the pressure above the reference value to the number (30) of all pressure sensors 21 provided in the surface area of the outer frame portion 11a is an object in the peripheral area of the intake port Corresponds to the percentage of the area in contact (ie, the percentage of contact).

  In this embodiment, the intake portion 11b of the bezel 11 is partitioned by a grid member, and a plurality of openings are formed in the intake portion 11b. In such a bezel 11, each of the plurality of openings in the intake section 11b functions as an intake port. Therefore, not only the surface area of the outer frame portion 11a (the area around the intake portion 11b), but also the area around each opening in the intake portion 11b corresponds to the area around the intake port. That is, the pressure sensor for detecting the contact ratio may be provided in the peripheral region (grid member) of each opening in the intake portion 11b. The intake portion 11b of the bezel 11 may be partitioned by a plurality of parallel linear members instead of the lattice member.

  Further, a plurality of length measurement sensors 22 are provided in the outer frame portion 11 a. As shown in FIG. 3, four length measuring sensors 22 are provided at the four corners of the outer frame portion 11a. The length measurement sensor 22 detects a distance between an object present in front of the air intake port P1 (for example, a foot space between the front seat 41 and the rear seat 42) and the air intake port P1 (outer frame portion 11a). The principle of detecting the distance will be described later. The detected values (signals indicating the distance) of the four length measuring sensors 22 provided in the outer frame portion 11 a are all input to the controller 30. The controller 30 can use a representative value (average value, median value, minimum value or the like) of a plurality of detected values as the distance between the object and the intake port P1.

  Referring back to FIG. 2, the laser sensor 23 includes a light source and a light receiving element (not shown). The laser sensor 23 is disposed at a position facing the air intake port P1 (for example, under the front seat 41). That is, the laser beam emitted from the light source of the laser sensor 23 is irradiated to the air inlet P1 at an angle substantially perpendicular to the air inlet P1. By irradiating the laser beam from the laser sensor 23 toward the intake port P1, an object existing between the contour of the intake port P1 (for example, the contour of the outer frame portion 11a) and the laser sensor 23 and the intake port P1 And the contour of the An output signal of the laser sensor 23 (a signal indicating an outline and an area within the outline) is input to the controller 30. The controller 30 can detect the size of the object in the detection range in front of the air intake port P1 (for example, the foot space between the front seat 41 and the rear seat 42) based on the output signal of the laser sensor 23. The detection of the size of the object is performed within the detection range of the laser sensor 23 set in front of the intake port P1. The portion that is out of the detection range of the laser sensor 23 is not recognized as the size of the object. The principle of detecting the size of the object will be described later.

  Battery pack 14 is used, for example, as a power source for causing vehicle 200 to travel. Specifically, the electric energy output from battery pack 14 is converted into kinetic energy for causing vehicle 200 to travel by a motor generator (not shown), and the kinetic energy drives the drive wheels of vehicle 200. Further, when vehicle 200 decelerates or stops, the motor generator converts kinetic energy generated at the time of braking of vehicle 200 into electric energy, and the electric energy (regenerative power) is stored in the battery pack 14 ( It is stored in the secondary battery). A booster circuit and / or an inverter may be disposed in the current path between the battery pack 14 and the motor generator.

  Vehicle 200 may be an electric vehicle capable of traveling using only the power of battery pack 14 or may be a hybrid vehicle capable of traveling using both the power of battery pack 14 and the output of the engine. .

  Information on travel of the vehicle 200 (traveling speed, traveling distance, engine rotation speed, etc.) may be displayed on the display 40.

  As the controller 30 drives the blower 13, air in the vehicle compartment (in particular, air in the foot space between the front seat 41 and the rear seat 42) is taken into the air intake duct 10a from the air intake port P1, and the battery The air passes through the air flow passage of the pack 14 and is discharged from the exhaust port P2. Air is supplied to the battery pack 14 to adjust the temperature of the battery in the battery pack 14. Air exhausted from exhaust port P2 is exhausted to the outside of vehicle 200, for example. However, the present invention is not limited to this, and the air discharged from the exhaust port P2 may be returned to the vehicle compartment, or may be guided to a space (for example, a luggage room) other than the vehicle compartment (ride space).

  In the temperature control system 100 of the power storage device according to this embodiment, during normal operation, the controller 30 refers to the battery state-air volume correspondence information, and the blower according to the state of the battery (power storage device) in the battery pack 14 Control 13 Then, the controller 30 monitors the state in front of the intake port P1 based on the input signals from the pressure sensor 21, the length measurement sensor 22 and the laser sensor 23, and when the predetermined air volume increase condition is satisfied, the blower The control to increase the air volume with respect to 13 (hereinafter, may be referred to as “air volume increase control”) is executed. The driving amount (rotational speed of the impeller) of the blower 13 during the air amount increase control is larger than the driving amount during normal operation (the driving amount determined based on the battery state-air amount correspondence information).

  Hereinafter, the above-mentioned air volume increase control will be described with reference to FIGS. 4 and 5. FIG. 4 is a diagram showing the temperature control system 100 in a state where there is no object in front of the intake port P1. FIG. 5 is a diagram showing the temperature control system 100 in the state where an object is present in front of the intake port P1.

  The temperature control system 100 is configured to take in air from the air inlet P1, and use the taken-in air to adjust the temperature of the battery (power storage device) in the battery pack 14. In the situation shown in FIG. 4, since there is no object in front of the intake port P1, air can be easily taken in from the intake port P1. On the other hand, in the situation shown in FIG. 5, since the objects (packages B1 and B2) exist in front of the intake port P1, the objects block the flow of air and the pressure loss becomes large. For this reason, in the situation shown in FIG. 5, the air flow to the battery pack 14 is lower than in the situation shown in FIG.

  In temperature control system 100 of the power storage device according to this embodiment, condition A is satisfied when an air flow increase condition including the following conditions A to C as necessary conditions is satisfied, and controller 30 (control device) The air volume to the battery pack 14 is increased as compared with the case where at least one of the condition B and the condition C is not satisfied.

  (Condition A) The contact ratio of the intake port P1 detected using the detection value of the pressure sensor 21 is determined by the first threshold (hereinafter sometimes referred to as “first threshold Th1” or simply “Th1”) Even small.

  (Condition B) The size of the object in the detection range before the intake port P1 detected using the output signal of the laser sensor 23 is the second threshold (hereinafter, "second threshold Th2" or simply "Th2" May be referred to as

  (Condition C) When the distance between the intake port P1 and the object detected using the detection value of the length measurement sensor 22 is referred to as the third threshold (hereinafter referred to as "third threshold Th3" or simply "Th3" There is less than).

  The inventors of the present application have found that the status of the system can be determined based on the success or failure of the above conditions A to C. Specifically, when the condition A is not satisfied, it is determined that the system condition is the first condition in which the closing ratio of the intake port P1 by the object in contact with the intake port P1 is large. When all of the conditions A to C are satisfied, the system state is determined to be a second situation in which a large object is present in the vicinity of the intake port P1 although the closing ratio of the intake port P1 is not large. Ru. In addition, when the condition A is satisfied and at least one of the condition B and the condition C is not satisfied, it is determined that the state of the system is the third state which is neither the first nor the second state. Be done.

  Controller 30 in temperature control system 100 of the power storage device according to the present embodiment attains the third situation when the air flow increase condition including the requirement that the system is in the second situation is satisfied. The air volume to the battery pack 14 is configured to be increased more than in the case where The controller 30 increases the air flow to the battery pack 14 by increasing the rotational speed of the impeller of the blower 13. As a result, even when a large object (such as a human body or a luggage) is present near the intake port P1, the temperature of the battery (power storage device) in the battery pack 14 can be appropriately adjusted. Further, by appropriately adjusting the temperature of the power storage device, the life of the power storage device can be extended. Hereinafter, an example of the air volume control by the controller 30 will be described in detail with reference to FIGS.

  For example, in a situation where the temperature of the battery (power storage device) in battery pack 14 tends to rise, controller 30 repeatedly executes a series of processes shown in FIG. 6 to prevent the battery temperature from becoming excessively high. . FIG. 6 is a flowchart illustrating the procedure of the process performed by the controller 30. The process shown in this flowchart is called from the main routine and repeatedly executed every predetermined time or when the predetermined condition is satisfied.

  Referring to FIG. 6, controller 30 detects the contact ratio of intake port P1 using the detection value of pressure sensor 21 (step S11). The controller 30 acquires the number of pressure sensors 21 sensing a pressure equal to or greater than a reference value based on detection values of 30 pressure sensors 21 (see FIG. 3) provided in the outer frame portion 11a. The fact that the pressure sensor 21 senses a pressure equal to or higher than the reference value indicates that an object is in contact with the portion (sensor installation area) of the outer frame portion 11a in which the pressure sensor 21 is installed. Hereinafter, the pressure sensor 21 that has sensed a pressure equal to or higher than a reference value may be referred to as a “sensed sensor”.

  The ratio of the number of sensed sensors to the number (30) of all the pressure sensors 21 corresponds to the contact ratio of the intake port P1. Since the number of all pressure sensors 21 (30 in this embodiment) basically does not change unless the user intentionally changes the configuration of the system, the number of sensed sensors is substantially The contact ratio of the intake port P1 will be indicated. For example, the fact that the number of sensors with sensing is nine indicates that the contact ratio of the intake port P1 is 30% (= 100 × 9/30).

  Next, in step S12, the controller 30 determines whether the contact ratio of the intake port P1 detected in step S11 is less than the first threshold value Th1. Th1 is a threshold that can be set arbitrarily, and is stored, for example, in a storage device of the controller 30. Th1 suitable for protecting the power storage device may be obtained in advance by experiment or the like, and may be stored in the storage device of the controller 30. In this embodiment, Th1 is 30%. That is, if the number of sensed sensors detected in step S11 is less than nine, it is determined that the contact ratio of the intake port P1 is less than the first threshold value Th1.

  When it is determined that the contact ratio of the intake port P1 is Th1 or more (that is, the number of sensors with sensing is 9 or more) (NO in step S12), the controller 30 sends the blower 13 to the blower 13. After the air flow rate increase control (step S13) is performed, a notification process (step S14) is performed to notify the user that the intake port P1 is blocked. Then, after the notification process is performed, the process is returned to the main routine.

  In step S13, the controller 30 generates a drive signal for controlling the air flow rate increase to the air blower 13, and controls the air blower 13 based on the drive signal. As a result, the drive amount of the blower 13 (rotational speed of the impeller) becomes larger than the drive amount during normal operation (drive amount determined based on the battery state-air amount correspondence information). As the driving amount of the blower 13 increases, the amount of air (cooling air) directed from the blower 13 to the battery pack 14 increases. The air volume increased by the execution of the air volume increase control (hereinafter, may be referred to as "air volume increase") may be a fixed value, or may be variable according to the contact ratio of the intake port P1 or the like. .

  For example, information indicating the relationship between the contact ratio of intake port P1 and the increase in air volume (hereinafter referred to as “contact ratio-increased air volume correspondence information”) is obtained in advance by experiment and stored in the storage device of controller 30. May be FIG. 7 is a diagram showing an example (table) of the contact ratio-increased air volume correspondence information.

  Referring to FIG. 7, this table defines a relationship such that the increase in the air flow rate increases as the contact ratio of the air intake port P1 increases. The controller 30 can change the air flow increase amount according to the contact ratio of the intake port P1 by referring to a table as shown in FIG. 7, for example. The controller 30 can increase the air volume of the air (cooling air) to the battery pack 14 as the contact ratio of the intake port P1 is larger.

  Referring again to FIG. 6, in step S14, controller 30 performs a predetermined notification process. The controller 30 causes the display 40 to display information indicating that the intake port P1 is closed, for example. Since noise (for example, fan noise) may be generated by increasing the rotational speed of the impeller of the blower 13 in step S13, it is desirable to notify the user of the cause. Note that the method of notifying the user is arbitrary, and may be indicated by display (character or image, etc.), may be notified by sound (including sound), or the lamp is turned on (including blinking). It is also good.

  On the other hand, when it is determined in step S12 that the contact ratio of the intake port P1 is less than Th1 (YES in step S12), the controller 30 uses the output signal of the laser sensor 23 to detect before the intake port P1. The size of the object in the range is detected (step S21).

  The laser sensor 23 irradiates laser light toward the air inlet P1, and based on the difference in the amount of light detected by the light receiving element, divides the region where at least one of the air inlet P1 and the object exists from the other region. It outputs an image signal shown separately. For this reason, the controller 30 can detect the contour of the region including the air intake port P1 and the object existing in front thereof and the area in the contour based on the output signal of the laser sensor 23. Further, the controller 30 can detect the size of the object in the detection range in front of the intake port P1 based on the area. Specifically, the controller 30 acquires the ratio Y / X shown below as the size of the object. FIG. 8 is a diagram for explaining the principle by which the size of an object is detected.

  Referring to FIG. 8, when there is no object in front of intake port P1, an image signal indicating contour S1 of intake port P1 (that is, the boundary between the area where intake port P1 exists and the other area) is , And from the laser sensor 23 to the controller 30. When an object exists in front of the intake port P1, the outline S3 of the area including the intake port P1 and the object existing in front of the intake port P1 (a region in which at least one of the intake port P1 and the object exists and the other An image signal indicating a boundary with the area of (1) is input from the laser sensor 23 to the controller 30. In FIG. 8, the outline S2 shows the outline of the object existing in front of the intake port P1.

  The controller 30 detects an area in the outline S1 (hereinafter referred to as "area X") and an area in the outline S3 (hereinafter referred to as "area Y") based on the output signal of the laser sensor 23. Then, by dividing the area Y by the area X, the ratio of the area Y to the area X (hereinafter referred to as “ratio Y / X”) is calculated. The area X indicates a value corresponding to the size of the intake port P1. Further, the area Y shows a value roughly corresponding to the size of the object. Further, the ratio Y / X indicates a value corresponding to the size of the object with accuracy higher than the area Y. It is considered that the reason for this is that by using the area X detected by the laser sensor 23 as a reference, deterioration in accuracy due to a detection error of the laser sensor 23 is suppressed. As the object existing in front of the air intake port P1 is larger, the ratio Y / X is larger.

  In the above method, in order to easily detect the size of the object, the size of the object is determined using the area in the outline S3, but instead of the area in the outline S3, the area in the outline S2 is You may use. The controller 30 can detect the outline S2 and the area in the outline S2 by performing image processing.

  Referring again to FIG. 6, controller 30 determines whether the size (ratio Y / X) of the object detected in step S21 is smaller than the second threshold value Th2 (step S22). Th2 is a threshold that can be set arbitrarily, and is stored, for example, in a storage device of the controller 30. Th2 suitable for protecting the power storage device may be previously obtained by experiment or the like, and may be stored in the storage device of the controller 30. In this embodiment, Th2 is 1.3. That is, if the area Y detected in step S21 is less than 1.3 times the area X, it is determined that the size of the object is less than the second threshold value Th2.

  If it is determined that the size of the object (ratio Y / X) is less than Th2 (YES in step S22), the process returns to the main routine. On the other hand, when it is determined that the size of the object (ratio Y / X) is Th2 or more (NO in step S22), controller 30 uses the detection value of length measuring sensor 22 to detect intake port P1. The distance to the object in front of the intake port P1 is detected (step S23).

  FIG. 9 is a diagram for explaining the principle by which the distance between the intake port P1 and the object is detected. The length measurement sensor 22 shown in FIG. 9 is a reflection type MA motion sensor (triangular distance measurement type sensor). However, the present invention is not limited to this, and a length measuring sensor of another detection method can also be adopted.

  Referring to FIG. 9, the length measuring sensor 22 is configured to project the light beam L1 and detect the distance to an object (such as a human body) by the reflected light L2. When a plurality of objects exist in the measurement range (the projection range of the light beam L1), the length measurement sensor 22 detects the distance between the object closest to the intake port P1 and the intake port P1. The measurement range of the length measurement sensor 22 is set, for example, in accordance with the measurement range (laser irradiation range) of the laser sensor 23. By overlapping these ranges, the size and distance can be detected for a single object.

  Referring again to FIG. 6, controller 30 determines whether the distance detected in step S23 is less than third threshold value Th3 (step S24). Th3 is a threshold that can be set arbitrarily, and is stored, for example, in a storage device of the controller 30. Th3 suitable for protecting the power storage device may be obtained in advance by experiment or the like, and may be stored in the storage device of the controller 30. In this embodiment, Th3 is 80 mm. That is, if the distance between the intake port P1 and the object is less than 80 mm, it is determined in step S24 that the distance is less than the third threshold value Th3.

  If it is determined that the distance between the intake port P1 and the object is Th3 or more (NO in step S24), the process returns to the main routine. On the other hand, when it is determined that the distance between intake port P1 and the object is less than Th3 (YES in step S24), controller 30 uses the detection value of battery temperature sensor 27 to set the battery in battery pack 14 It is determined whether or not the temperature is lower than the fourth threshold Th4 (step S25). The fourth threshold Th4 is a threshold that can be set arbitrarily, and is stored, for example, in a storage device of the controller 30. A fourth threshold value Th4 suitable for protecting the power storage device may be obtained in advance by experiment or the like, and may be stored in the storage device of the controller 30. A fourth threshold Th4 different for each type of battery (lithium ion battery, nickel hydrogen battery, etc.) is prepared in the storage device, and the controller 30 controls the type of battery currently in use (ie, the battery in the battery pack 14). The above determination may be performed using a fourth threshold value Th4 corresponding to

  If it is determined that the temperature of the battery is lower than fourth threshold value Th4 (YES in step S25), it is determined that the temperature of the power storage device is normal (that is, the power storage device does not have to be cooled). , Processing is returned to the main routine. On the other hand, when it is determined that the temperature of the battery is equal to or higher than fourth threshold value Th4 (NO in step S25), controller 30 uses the detection value of current sensor 26 to It is determined whether the load is less than the fifth threshold Th5 (step S26). Although the details will be described later, in this embodiment, when the load of the battery is less than the fifth threshold Th5, the air amount increase control is executed, and the load of the battery is equal to or higher than the fifth threshold Th5. Does not execute the air flow increase control.

The load of the battery is a load applied to the battery when the vehicle is traveling or the like, and can be represented by the square (I ² ) of the current value of the battery. The fifth threshold Th5 is a threshold that can be set arbitrarily, and is stored, for example, in a storage device of the controller 30. In order to properly adjust the temperature of the power storage device, the calorific value H1 (hereinafter simply referred to as "H1") of the battery in the battery pack 14 represented by the following formula (1) and the following formula (2) It is preferable to set the fifth threshold value Th5 based on the coolable calorific value H2 (hereinafter, simply referred to as "H2") of the blower 13 represented.

H1 = I ² × R (1)
H2 = kF × Q × (Tb−Tc) (2)
In Formula (1), "I" represents the current value of the battery, and "R" represents the internal resistance of the battery. The controller 30 can detect the current value of the battery using the detection value of the current sensor 26. The internal resistance of the battery is stored, for example, in a storage device of the controller 30. The internal resistance of the battery is stored, for example, in the storage device of the controller 30 when the battery pack 14 is mounted on the temperature control system 100.

In equation (2), “kF” represents the cooling performance coefficient of the blower 13 for the battery in the battery pack 14. kF is a coefficient indicating how much the heat of the battery can be removed when the air flow rate is increased by 1 m ³ / h by the blower 13 to lower the temperature of the battery by 1 ° C. When calculating kF, the saturation value of the battery temperature is used. kF is determined by the type and number of cells in the battery pack 14, the duct structure (flowability of air), and the like. kF is obtained in advance by experiment or the like and stored in the storage device of the controller 30.

  In equation (2), “Q” represents the air volume of blower 13, “Tb” represents the temperature of the battery in battery pack 14, and “Tc” represents the intake air temperature (the temperature of the air supplied to battery pack 14 Represents. The controller 30 can detect the air volume (Q) of the blower 13 using the detection value of the rotation sensor 24. The controller 30 can detect the temperature (Tb) of the battery in the battery pack 14 using the detection value of the battery temperature sensor 27. The controller 30 can detect the intake air temperature (Tc) using the detection value of the intake air temperature sensor 25.

  FIG. 10 is a diagram for describing a method of setting the fifth threshold value Th5 used in the determination of step S26. In FIG. 10, solid lines k1 and k2 indicate the transition of the temperature of the battery in the battery pack 14. Specifically, the solid line k1 indicates the transition of the battery temperature when the air volume control of the blower 13 is performed under the condition that H1 is larger than H2, and the solid line k2 indicates the blower 13 under the condition that H1 is H2 or less. Shows the transition of the battery temperature when the control of the air volume is performed.

  Referring to FIG. 10, as indicated by solid line k1, when H1 is larger than H2, the temperature rise of the battery is not sufficiently suppressed, and the temperature of the battery continues to rise without convergence. On the other hand, when H1 is equal to or less than H2, as shown by the solid line k2, the temperature rise of the battery is suppressed with the passage of time, and the temperature of the battery converges.

When the load (I ² ) of the battery is large, H1 (see the above equation (1)) becomes large, so H1 may not fall below H2 even if the air amount increase control is performed in step S13 described later. Even if air volume increase control is performed under the condition that H1 is larger than H2, the batteries in the battery pack 14 can not be sufficiently cooled (see the solid line k1 in FIG. 10). Therefore, in step S26 (FIG. 6), the controller 30 determines whether the battery load is excessively large (that is, whether the battery load is too large to be sufficiently cooled by air volume increase control described later). If the value of x is excessively large, air flow rate increase control is not performed. The fifth threshold Th5 used in the determination of step S26 is the load of the battery is equal to or higher than the fifth threshold Th5 in step S26 when H1 becomes larger than H2 when air volume increase control is performed. It is determined that it is determined that the load of the battery is less than the fifth threshold Th5 in step S26 when it is determined that H1 becomes equal to or less than H2 when the air amount increase control is performed. preferable.

  When it is determined that the load of the battery is equal to or higher than the fifth threshold Th5 (NO in step S26), the load of the power storage device is excessively large (that is, the temperature of the power storage device is appropriately adjusted Can not be determined), and the process is returned to the main routine. In this case, it is preferable to perform control to reduce the load of the battery and / or notification processing to the user. For example, controller 30 may notify an ECU (Electronic Control Unit) of vehicle 200 that the load on the battery is large, and the ECU of vehicle 200 may perform a process of limiting the current of the battery. Alternatively, the controller 30 may notify the user that the load on the battery is large, and urge the user to run on the condition that the load is not applied to the battery.

  On the other hand, when it is determined that the load of the battery is less than the fifth threshold value Th5 (YES in step S26), controller 30 performs the air volume increase control (step S13) on blower 13 Then, a notification process (step S14) is performed to notify the user that there is a large object near the intake port P1. Then, after the notification process is performed, the process is returned to the main routine.

  In step S13, basically, the blower 13 is controlled in the same manner as in the case where it is determined that the contact ratio of the intake port P1 is less than the first threshold Th1 in step S12 described above, and the air amount increase control is performed. Run. The air volume (increase in air volume) increased by execution of the air volume increasing control may be a fixed value or may be variable according to the type of battery and the like.

  For example, information indicating the relationship between the type of battery and the increase in air volume (hereinafter, referred to as "battery type-increased air volume correspondence information") may be obtained in advance by experiment or the like and stored in the storage device of the controller 30. FIG. 11 is a diagram showing an example (table) of the battery type-increased air volume correspondence information. In FIG. 11, "Ni" represents a nickel hydrogen battery and "Li" represents a lithium ion battery.

  Referring to FIG. 11, this table is larger as the increase in air volume when the battery in battery pack 14 is a nickel hydrogen battery and larger than the increase in air volume when the battery in battery pack 14 is a lithium ion battery. Define the air volume. The controller 30 performs the above-described control of increasing the amount of air flow by the amount of air flow increase corresponding to the type of battery (lithium ion battery, nickel hydrogen battery) in the battery pack 14 by referring to a table as shown in FIG. 11, for example. Can. The type of battery is stored, for example, in a storage device of the controller 30. The type of battery is stored, for example, in the storage device of the controller 30 when the battery pack 14 is mounted on the temperature control system 100.

  The method of determining the increase in air flow rate is not limited to the above method and is arbitrary. For example, information indicating the relationship between the contact ratio of the intake port P1, the size of the object in front of the intake port P1, the distance between the intake port P1 and the object in front of the intake port P1, and the increase in air volume (hereinafter referred to as "object- The “increased air volume correspondence information” may be obtained in advance by experiments or the like and stored in the storage device of the controller 30. Then, the controller 30 refers to the object-increased air volume correspondence information, and the contact ratio of the intake port P1 (detected value in step S11) and the size of the object in front of the intake port P1 (detected value in step S21) The above-described air volume increase control may be performed by an air volume increase corresponding to the distance between the intake port P1 and the object in front of the intake port P1 (the detected value in step S23).

  In step S14, the controller 30 performs a predetermined notification process. The controller 30 causes the display 40 to display, for example, information indicating that there is a large object near the intake port P1.

  By repeatedly performing the process of FIG. 6, when the air volume increase condition (steps S12, S22, S24 to S26) including the conditions A to C is satisfied, the rotational speed of the impeller of the blower 13 is large. As a result, the amount of air (cooling air) to the battery pack 14 increases. As a result, even when a large object (such as a human body or a luggage) is present near the intake port P1, the temperature of the battery (power storage device) in the battery pack 14 can be appropriately adjusted.

  The position of the intake port of the temperature control system mounted on the vehicle is not limited to the position under the rear seat in the vehicle interior and is optional. FIG. 12 is a view showing an example in which the intake port of the temperature control system is provided on the seat side.

  Referring to FIG. 12, for example, intakes P11 and P12 may be provided on seat side 42c of rear seat 42. In this example, the intake ports P11 and P12 are disposed in the vicinity of the seat cushion 42a. For this reason, an object (such as a person's body or a luggage) in front of the air inlets P11 and P12 is set by placing a load on the seat cushion 42a or by the occupant sitting near the air inlets P11 and P12 of the seat cushion 42a As it exists, it may become difficult to take in air from the air inlets P11 and P12. Also in the temperature control system having such intake ports P11 and P12, it is effective to perform the process of FIG. By performing the process of FIG. 6 above, the temperature of the battery in the battery pack 14 should be properly adjusted even when a large object (such as a human body or luggage) is present near the intake ports P11 and P12. Becomes possible.

  FIG. 13 is a diagram showing the position of the laser sensor 23 in the example shown in FIG. Referring to FIG. 13, laser sensor 23 can be disposed at a position facing air inlets P11 and P12 of front seat 41 (for example, the back of the seat side of front seat 41). Although only the laser sensor 23 for the intake port P12 is shown in FIG. 13, the laser sensor 23 for the intake port P11 is similarly provided in the front seat 41 (for example, the back of the seat side of the front seat 41). Can.

  In the process of FIG. 6, when the air volume increase condition (steps S12, S22, S24 to S26) including the conditions A to C is not satisfied, that is, the contact ratio of the inlet P1 is larger than Th1 (condition A) In the case where (1) does not hold true), the air flow rate increase control is performed. However, the invention is not limited to this, and when the contact ratio of the intake port P1 is larger than Th1 (YES in step S12), only the notification process (step S14) may be performed without executing the air volume increasing control (step S13). Good.

  If it is determined in step S26 that the load of the battery is equal to or greater than the fifth threshold Th5 (NO in step S26), air flow rate increase control is performed, and other control (restriction of battery current etc.) is performed. The process of FIG. 6 may be changed.

  In each of steps S12, S22, and S24 to S26, when each detected value (contact ratio, size of object, distance, battery temperature, battery load) matches the threshold value, it is arbitrarily determined as YES or NO. It can be changed, and may be changed to be different from the example shown in FIG.

  In the process of FIG. 6, all of the conditions A to C are satisfied (steps S12, S22, and S24), and the battery in the battery pack 14 is in a state in which temperature control is necessary and When the temperature can be appropriately adjusted (steps S25 and S26), the air volume increase condition is established. However, the present invention is not limited thereto, and a sufficient condition for the air volume increase condition to be satisfied may be only that all of the conditions A to C are satisfied. For example, when it is determined that the distance between the intake port P1 and the object is less than Th3 in step S24, the process of FIG. 6 is changed such that the air amount increase control is executed without passing through steps S25 and S26. It is also good.

  In the process of FIG. 6 described above, the air flow rate increase control for cooling the battery is performed in step S13 so that the temperature of the battery does not become excessively high in a situation where the temperature of the battery in the battery pack 14 tends to rise. . However, the present invention is not limited thereto, and the temperature of the battery in the battery pack 14 is changed by changing the process of FIG. 6 so that the air volume of the warm air (air for warming the power storage device) to the battery pack 14 is increased in step S13. The battery temperature may not be excessively lowered in a situation where

  The configuration of the system shown in FIG. 1 and the position and number of sensors shown in FIG. 3 can be changed as long as the air volume control can be appropriately performed. For example, the blower 13 may be disposed between the battery pack 14 and the exhaust port P2. Also, the number of length measuring sensors 22 may be one.

  The method of detecting the contact ratio of the intake port P1, the size of the object in front of the intake port P1, and the distance between the intake port P1 and the object is not limited to the method described above, and is arbitrary. For example, a camera (image sensor) may be used to detect the size of the object. Alternatively, a light receiving element may be provided on the intake port P1 side to emit light toward the intake port P1. If an object is present in front of the air inlet P1, the light receiving element can not detect light in a region where light is blocked by the object (that is, a region corresponding to the size of the object). The projection area of the object detected based on such a principle may be used as the size of the object.

  The target to which the temperature control system for a power storage device of the present disclosure is applied is not limited to a vehicle, and is arbitrary. The application target may be, for example, another vehicle (ship, plane, etc.) or a building (house, factory, etc.).

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

  10a intake duct, 10b connection duct, 10c exhaust duct, 11 bezel, 11a outer frame portion, 11b intake portion, 12 filter, 13 air blower, 14 battery pack, 21 pressure sensor, 22 length measuring sensor, 23 laser sensor, 24 rotation Sensors, 25 intake temperature sensors, 26 current sensors, 27 battery temperature sensors, 30 controllers, 40 displays, 41 front seats, 41a, 42a seat cushions, 41b, 42b seat backs, 42 rear seats, 42c seat sides, 43 package trays, 100 Temperature control system, 200 vehicles, P1, P11, P12 Intake, P2 exhaust.

Claims (1)

What is claimed is: 1. A temperature control system for a power storage device, which takes in air from an air inlet and adjusts the temperature of the power storage device using the taken-in air,
A contact ratio detection device that detects a ratio of a region in which an object is in contact in a peripheral region of the intake port;
An object size detection device for detecting the size of an object in a detection range in front of the intake port;
A distance measuring device for measuring the distance between the air intake and an object in front of the air intake;
An air blower for blowing air taken in from the air inlet to the power storage device;
A control device that changes an air flow rate of the air to the power storage device by controlling the air blower;
Equipped with
When the predetermined condition is satisfied, the control device is configured to store the electric power more than when the ratio detected by the contact ratio detection device is smaller than the first threshold and the predetermined condition is not satisfied. Controlling the blower to increase the volume of the air to the device;
The predetermined condition is
The ratio detected by the contact ratio detection device being smaller than the first threshold;
The size of the object detected by the object size detection device being greater than a second threshold;
The distance measured by the distance measuring device being smaller than a third threshold value;
Temperature control system for power storage device, including as a requirement.

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