JP2011249225A - Storage battery module - Google Patents

Abstract

A storage battery module including a cooling mechanism capable of reliably radiating heat from each storage battery cell constituting the storage battery module is provided.
A storage battery gripping part for holding and integrating a plurality of storage battery cells arranged in a plurality of rows and stages as a storage battery module encloses the exterior part of each storage battery cell in close contact with each other. Thus, each storage battery cell 10 has a shape for holding and fixing, and has a heat pipe structure in which a flow path for circulating a cooling fluid for cooling each storage battery cell 10 is formed in the storage battery holding part 20. The shape of the storage battery gripping portion 20 may be a shape corresponding to the shape of the gap between the storage battery cells 10 when the storage battery cells 10 are arranged in a plurality of rows and stages at predetermined intervals. . In addition, the flow path formed in the storage battery holding | grip part 20 is made into the shape which passes the position close | similar to the electrode part of each storage battery cell 10. FIG.
[Selection] Figure 1

Description

  The present invention relates to a storage battery module, and more particularly to a cooling mechanism for a battery module.

  In the prior art, “Highly reliable power supply system using large nickel metal hydride storage battery” by Akihiro Miyasaka et al. Of Non-Patent Document 1 (The Electrochemical Society Technical Committee New Battery Concept Committee, 61st New Battery Concept Committee Lecture As shown in “FIG. 3.3 Battery module” of pp1-4), the cooling mechanism of the storage battery module uses a cooling fan to discharge the air taken from the front of the storage battery module to the back. It was a structure.

  That is, in the conventional storage battery module cooling mechanism described in Non-Patent Document 1, as shown in FIG. 4, 10 cylindrical 95AhNiMH storage battery cells (diameter φ60 mm × length L170 mm) are connected in series as a cylindrical battery. Thus, one storage battery module is configured, and the entire storage battery module is forcibly cooled by a cooling fan. FIG. 4 is a schematic diagram showing a mounting structure of a conventional storage battery module, and FIG. 4A is a perspective view showing a state of the storage battery module configured by connecting 10 cylindrical batteries 1 in series. 4 (B) is a perspective view showing a structure of a battery box on which the storage battery module is mounted.

  As shown in FIG. 4 (A), in the storage battery module, each cylindrical battery 1 (each storage battery cell) is arranged in five rows and two stages with a space width of 5 mm apart from each other, and each cylindrical type. In order to make it easy to connect the batteries 1 in series, the adjacent cylindrical batteries 1 are arranged so that the positions of the positive electrode 2 and the negative electrode 3 are alternately changed so that the adjacent positive electrode 2 and the negative electrode 3 face the same surface. The positive electrode 2 and the negative electrode 3 of each adjacent cylindrical battery 1 are connected by a bus bar (battery connector) or a power line and held by an insulating battery holding plate 5, that is, a battery fixing plate. The structure is fixed. It should be noted that the battery gripping plate 5 is placed on the portion of the battery gripping plate 5 that grips each cylindrical battery 1 in order to facilitate the attachment / detachment of each cylindrical battery 1 when the cylindrical battery 1 is replaced. A dividing surface 6 is formed for removing a part (upper and lower plates).

  Furthermore, as shown in FIG. 4 (B), the battery gripping plate 5 for gripping each cylindrical battery 1 is placed on the battery box base 11 and covered with the outer box 12 of the battery box from above. The storage battery module is housed in a battery box.

  Here, the outer case 12 of the battery box is an opposed flat plate in which two side plates that are in a positional relationship parallel to the center line of each of the 10 cylindrical batteries 1 connected in series are each provided with a vent hole. A vent hole formed in the other opposing flat plate (the side plate on the back side of the outer box 12 in FIG. 4B) is a suction port 15 for sucking air. A vent hole formed in the face plate (the side plate on the front side of the outer box 12 in FIG. 4B) forms an exhaust port for exhausting air that has exchanged heat with each cylindrical battery 1. .

  Of the ten cylindrical batteries 1 connected in series, the positive electrode 2 or negative electrode 3 of the first cylindrical battery 1 and the negative electrode 3 or positive electrode 2 of the last cylindrical battery 1 are shown in FIG. As described above, the output terminal of the electrical connector 14 attached to the other opposing flat plate (the side plate on the near side of the outer box 12 in FIG. 4B) is electrically connected to the output terminal of the battery box by the bus bar or the power line. Connected to.

  Furthermore, as shown in FIG. 4 (B), for the purpose of having no temperature variation during charging and discharging of the storage battery cell and not exceeding the upper limit temperature, as shown in FIG. 4 (B), one opposing flat plate (FIG. 4). In (B), a cooling fan 13 with a box is attached to the front side plate of the outer box 12, and the other facing flat plate of the outer box 12 of the battery box (in FIG. 4B, the outer box The entire storage battery module composed of ten cylindrical batteries 1 housed in the battery box is forcibly cooled by sucking cooling air from the suction port 15 formed in the rear side plate 12). is doing.

  Further explanation is as follows. In a conventional storage battery module, a plurality of cylindrical batteries 1 in a battery box are placed on a battery box base 11 via a battery gripping plate 5, and vent holes are formed at positions facing each other as side plates. In addition, one opposing flat plate is housed in a battery box covered with an outer box 12 to which a cooling fan with box 13 and an electrical connector 14 are attached. Each cylindrical battery 1 placed on the battery box pedestal 11 has a multi-stage configuration, each central axis is horizontal (positional relationship parallel to the bottom surface of the battery box pedestal 11), and each cylindrical battery. The central axis 1 is arranged so as to be parallel to the opposing flat plate of the outer box 12.

  Further, the cooling fan 13 with a box is driven so as to exhaust heat generated from the plurality of cylindrical batteries 1 by outside air (air) taken in from a suction port 15 of a vent hole formed in the opposing flat plate. It is configured.

  That is, since the plurality of cylindrical batteries 1 in the storage battery module are arranged as described above, they are sucked into the other opposing flat plate by driving the box-mounted cooling fan 13 attached to the one opposing flat plate. The outside air taken in from the vent hole formed as the opening 15 hits the side surface of the cylindrical battery 1 closest to the vent hole and goes around the back surface, and then hits the side surface of the adjacent cylindrical battery 1 and goes around the back surface. By repeating this, heat is exchanged with each of the plurality of cylindrical batteries 1 that are heating elements, and the heat is exhausted by exhausting from a vent hole formed as an exhaust port on one opposing flat plate.

  At this time, since the battery shape of each cylindrical battery 1 (storage battery cell) constituting the storage battery module in the battery box is cylindrical, unnecessary turbulent flow of the introduced outside air is suppressed, and furthermore, each cylindrical battery Since the central axis of 1 is arranged in the battery box so as to be horizontal and parallel to the opposing flat plate, the ventilation resistance can be reduced. As a result, the exhaust heat from the battery box is efficiently performed in the direction in which the opposed flat plates face each other.

Akihiro Miyasaka, Takahisa Masayo; “Highly reliable power supply system using large nickel metal hydride storage battery”, Electrochemical Society Technical Committee New Battery Concept Committee, 61st New Battery Concept Committee Lecture, pp1-4.

  However, in the conventional storage battery module cooling mechanism as described in Non-Patent Document 1, the discharge current has a high rate of about 2.5 C to 3 C (C: rated capacity of the storage battery module). When this occurs, the amount of heat is 100 times that of the charge / discharge operation at a discharge rate (discharge current) of 0.2 to 0.3 C, which is generally used by conventional battery manufacturers. The situation which generate | occur | produces generate | occur | produces and there existed a subject that it cannot respond to such high temperature heat_generation | fever.

  In particular, as shown in the heat generating portion 4 of the cylindrical battery 1 in FIG. 5, the cell connection portion (that is, the electrode portion) of the positive electrode 2 and the negative electrode 3 of each cylindrical battery 1 (each storage battery cell) together with the bus bar and the power line. Since a large amount of heat is generated due to contact resistance, it is indispensable to take measures for cooling or preventing heat generation of the cell connection portion (that is, electrode portion) of each cylindrical battery 1 (each storage battery cell). Here, FIG. 5 is explanatory drawing for demonstrating the heat_generation | fever part of the storage battery module shown to FIG. 4 (A).

  However, in the conventional technology, since a large current flows through the cell connection portion (that is, electrode portion) of the positive electrode 2 and the negative electrode 3 of each cylindrical battery 1 (each storage battery cell), in order to prevent danger, The battery holding plate 5 having insulating properties is protected so as to prevent inadvertent human contact with the cell connection portion (that is, the electrode portion), and a cooling fan with a box as shown in FIG. 13, cooling air, that is, cooling air cannot be passed to the cell connection portion (that is, the electrode portion), and most of the exhaust heat from the cell connection portion (that is, the electrode portion) of the positive electrode 2 and the negative electrode 3 is lost. There was a problem that it was impossible. Furthermore, in the contact part (for example, electrical connector 14 of FIG. 1 (B)) of a storage battery module, there existed a problem that temperature might rise rapidly by contact resistance.

  The present invention has been made in view of such circumstances, and reliably performs heat dissipation of each storage battery cell constituting the storage battery module regardless of whether or not the discharge current reaches 2.5C to 3C. It is an object of the present invention to provide a storage battery module having a cooling mechanism that can be used.

  The present invention comprises the following technical means in order to solve the above-mentioned problems.

  A first technical means is a storage battery module having a structure in which a plurality of storage battery cells arranged in a plurality of rows and stages are housed in a battery box in a state of being integrated by gripping and fixing by a storage battery gripping portion. The portion has a shape for gripping and fixing each storage battery cell by enclosing the storage battery cell in an intimate contact state, and for cooling each storage battery cell in the storage battery gripping portion. It has a heat pipe structure in which a flow path for circulating a fluid is formed.

  According to a second technical means, in the storage battery module according to the first technical means, the shape of the storage battery gripping portion is determined when each of the storage battery cells is arranged at predetermined intervals in a plurality of rows and a plurality of stages. The shape corresponds to the shape of the space between the storage battery cells.

  According to a third technical means, in the storage battery module according to the first or second technical means, the flow path formed in the storage battery gripping portion passes through a position close to an electrode portion of each storage battery cell. It is characterized by a shape.

  According to a fourth technical means, in the storage battery module according to any one of the first to third technical means, the connector portion attached to the battery box includes a bus bar or a power line connected to the electrode portion of the storage battery cell. A power line connecting part for connection and a cooling water connecting part for circulating the cooling fluid, and the cooling water connecting part communicates with the flow path formed in the storage battery gripping part. Features.

  According to a fifth technical means, in the storage battery module according to any one of the first to fourth technical means, the cooling battery tank is provided with the cooling passage formed in the storage battery grip portion from an externally installed cooling water tank. A cooling water valve for circulating the fluid is provided on the end face of the storage battery gripping portion.

  According to a sixth technical means, in the storage battery module according to any one of the first to fifth technical means, the storage battery gripping portion is formed of a metal having high thermal conductivity.

  A seventh technical means is characterized in that, in the storage battery module according to the sixth technical means, an insulating member is disposed between the storage battery gripping part and the electrode part of the storage battery cell.

  According to an eighth technical means, in the storage battery module according to any one of the first to seventh technical means, each of the storage battery cells is a cylindrical battery having a cylindrical shape.

  A ninth technical means is characterized in that, in the storage battery module according to any one of the first to eighth technical means, electrodes of each of the adjacent storage battery cells are connected in series.

  According to the present invention, the following effects can be achieved.

  That is, since the storage battery gripping part for gripping and fixing each storage battery cell constituting the storage battery module has a heat sink structure in close contact with each storage battery cell, each storage battery cell can be directly cooled. Even in a situation where exhaust heat from each storage battery cell in the module cannot catch up, sufficient cooling can be performed to reliably perform exhaust heat from each storage battery cell. Thus, high rate discharge such as 2C, 3C (twice or three times the rated current capacity) can be performed.

  Furthermore, the heat of the battery connection part (that is, electrode part) of each storage battery cell, which is the highest heat in the storage battery module, or the storage battery gripping part (heat sink) arranged in the proximity of the bus bar or power line is surely removed. It is possible to cool, and also to suppress temperature variation for each storage battery cell, to make the temperature distribution inside the storage battery module uniform, and to improve the life of each storage battery cell and storage battery module.

It is the schematic which shows an example of a structure of the storage battery module which concerns on this invention. It is the schematic which shows the structural example of the power supply rack which mounts multiple storage battery modules shown in FIG. It is the schematic which shows an example of the structure of the connector part attached to the battery box of the storage battery module shown in FIG. It is a schematic diagram which shows the mounting structure of the conventional storage battery module. It is explanatory drawing for demonstrating the heat_generation | fever part of the storage battery module shown to FIG. 4 (A).

  Hereinafter, an example of a preferred embodiment of a storage battery module according to the present invention will be described in detail with reference to the drawings.

(Features of the present invention)
Prior to the description of the embodiments of the present invention, an outline of the features of the present invention will be described first. In the present invention, as a structure for holding and fixing each storage battery cell constituting a storage battery module (a package containing a plurality of, for example, 10 storage battery cells), a conventional electrode portion of each storage battery cell is provided. In addition to gripping, each storage battery cell is held and fixed so that the entire exterior portion is enclosed so as to be in close contact with the exterior portion of each storage battery cell (for example, a cylindrical side surface in the case of a cylindrical battery). In order to effectively exhaust each storage battery cell, the internal structure of the storage battery gripping part that holds each storage battery cell is a heat sink structure in which a flow path for circulating a cooling fluid is formed. Yes.

  Thus, the heat storage structure comprising the storage battery gripping portion can be directly cooled by efficiently exhausting the heat generated in each storage battery cell including the cell connection portion (that is, electrode portion) of each storage battery cell, and the entire storage battery module can be directly cooled. Since the heat capacity can be increased as described above, even when a situation occurs in which the temperature of the storage battery module is likely to rise in a short time, the cooling can be sufficiently performed.

(Configuration example of embodiment)
Next, an example of the configuration of the storage battery module according to the present invention will be described with reference to FIG. FIG. 1 is a schematic diagram illustrating an example of a configuration of a storage battery module according to the present invention.

  In addition, each storage battery cell 10 which comprises the storage battery module 30 in this embodiment uses the cylindrical battery which consists of a cylindrical shape similarly to the case of the conventional storage battery module shown in FIG. 4, as shown in FIG. However, the present invention is not limited to such a shape, and the storage battery gripping portion can be brought into close contact with the exterior portion of each storage battery cell in order to grip and fix each storage battery cell constituting the storage battery module. A storage battery cell having any shape may be used as long as it has a structure. Further, the storage battery cell constituting the storage battery module will be described with respect to the case where 10 storage battery cells are arranged in 5 rows and 2 stages as in the case of the conventional storage battery module shown in FIG. The present invention is not limited to this case, and the number of storage battery cells is not limited to ten, and may be configured by arranging a predetermined number of storage battery cells at predetermined intervals in a plurality of rows and stages.

  Next, the mounting structure shown in FIGS. 1A and 1B will be described. As shown in FIG. 1, in the storage battery module 30 in the present embodiment, the structure for holding and fixing each storage battery cell 10 constituting the storage battery module 30 is the case of the conventional storage battery module of FIG. 4. Is the same as the case of the conventional storage battery module of FIG. In addition, as a structure which hold | maintains each storage battery cell 10 which comprises the storage battery module 30, the storage battery holding part 20 which has a structure peculiar to this invention different from the battery holding plate 5 in the case of the conventional storage battery module of FIG. Details of an insulating structure for holding and fixing the storage battery cell 10 will be described later.

  As shown in FIG. 1 (A), in the storage battery module 30 according to the present invention, as in the case of FIG. 4 (A), the interval width between the storage battery cells 10 each having a cylindrical shape is determined in advance. In order to arrange the battery cells 10 in series with each other at an appropriate interval (for example, 5 mm) and to make it easy to connect the battery cells 10 in series, the adjacent battery cells 10 are connected to each other between the positive electrode 2 and the negative electrode 3. The positions of the positive electrode 2 and the negative electrode 3 are arranged so that the adjacent positive electrodes 2 and the negative electrode 3 face the same surface, and a bus bar (battery connector) or a power line is provided between the electrodes of the adjacent positive and negative electrodes 3 of each storage battery cell 10. However, the structure for gripping and fixing each storage battery cell 10 is different from the case of FIG. 4A in that the storage battery gripping portion 20 has a shape that closely contacts the exterior portion (side surface portion) of each storage battery cell 10. Each storage battery Exterior unit Le 10 so as to enclose the (side portion), and a structure for fixing by gripping the respective battery cells 10.

  Furthermore, as shown in FIG. 1 (B), the storage battery gripping part 20 that holds each storage battery cell 10 is placed on the battery box base 41 as in the case of FIG. 4 (B). The storage battery module 30 is housed in the battery box by covering the outer box 42 of the box.

  Here, as in the case of FIG. 4 (B), the battery box outer box 42 has two side plates that are parallel to the center line of each of the ten storage batteries 10 connected in series. It is formed as an opposing flat plate with a hole drilled, and a suction hole that sucks air through a vent hole drilled in the other opposing flat plate (the side plate on the back side of the outer box 42 in FIG. 1B) A vent hole formed in one of the opposed flat plates (a side plate on the front side of the outer box 42 in FIG. 1B) exhausts air that has exchanged heat with each storage battery cell 10. An exhaust port is formed.

  Among the ten storage battery cells 10 connected in series, the positive electrode 2 or negative electrode 3 of the first storage battery cell 10 and the negative electrode 3 or positive electrode 2 of the last storage battery cell 10 are as shown in FIG. It is electrically connected to the output terminal of the connector portion 50 attached to the other facing flat plate (in FIG. 1B, the side plate on the near side of the outer case 42) of the outer case 42 of the battery case by a bus bar or a power line. The

  Further, as shown in FIG. 1 (B), as in FIG. 4 (B), there is no temperature variation during charging / discharging of each storage battery cell 10 and the upper limit temperature is not exceeded. A cooling fan 43 is attached to one opposing flat plate of the outer box 42 (a side plate on the front side of the outer box 42 in FIG. 1B), and the other opposing flat plate ( In FIG. 1 (B), by sucking cooling air from the suction port 44 formed in the side plate on the back side of the outer box 42, the ten storage battery cells 10 housed in the battery box are removed. The entire storage battery module is configured to be forcibly cooled.

  Here, in the storage battery module 30 shown in FIG. 1, the storage battery gripping part 20 which is a structure for gripping and fixing each storage battery cell 10 is, as described above, the battery gripping plate 5 in the case of the conventional storage battery module of FIG. Unlike the conventional case, the electrode part of each storage battery cell 10 is not gripped, but is closely attached to the entire exterior part of each storage battery cell (for example, the cylindrical side surface part when the storage battery cell 10 is cylindrical). In this way, each storage battery cell 10 is held and fixed so as to be enclosed.

  That is, the storage battery gripping portion 20 is separated by 5 mm in 5 rows and 2 stages in each storage battery cell 10 (for example, in the conventional storage battery module of FIG. 4A) arranged at predetermined intervals in a plurality of rows and stages. It has a shape corresponding to the shape of the gap formed between the cylindrical batteries 1) arranged, and as shown in FIG. 1 (A), as shown in FIG. The storage battery cells 10 in the same arrangement state as in the case of the storage battery module can be maintained as they are, and can be fixed so as to be surrounded by the entire exterior portion (side surface portion) of each storage battery cell 10 in close contact.

  Furthermore, as shown in FIG. 1A, the storage battery gripping portion 20 for gripping each storage battery cell 10 effectively exhausts the heat generated by each storage battery cell 10 that has been a problem of the conventional storage battery module. A cooling mechanism of the storage battery module 30 for cooling is also provided as a structure unique to the present invention.

  Next, a cooling mechanism of the storage battery gripping part 20 unique to the present invention will be described with reference to FIG.

  The storage battery gripping portion 20 has a hollow structure in which the contents are hollowed out, and has a so-called heat sink structure, in which a flow path of a cooling fluid (for example, a liquid refrigerant such as cooling water) is formed. That is, in the cooling mechanism of the storage battery module 30, it is sent by the pump provided outside the storage battery module 30 via the cooling water valve 21 disposed on the end surface of the storage battery gripping portion 20 shown in FIG. The cooling fluid coming is circulated through the flow path in the storage battery gripping part 20 and then discharged to the outside of the storage battery gripping part 20 via the cooling water valve 21, thereby generating heat from each storage battery cell 10 that is a heating element. It is possible to cool by exhaust heat. That is, the cooling fluid circulating in the flow path of the storage battery gripping part 20 exchanges heat with each storage battery cell 10 that is a heating element via the storage battery gripping part 20 having a heat sink structure, and then the storage battery. By discharging to the outside of the grip portion 20, the heat of each storage battery cell 10 is exhausted.

  In addition, as for the material of the storage battery gripping part 20 forming the heat sink, a material that takes into consideration not only the metal having high thermal conductivity and the thermal conductivity but also the workability may be appropriately selected. In the case of using a metal having high thermal conductivity, a structure that avoids contact with the electrode portion, bus bar, or power line of the storage battery cell 10 or insulation between the electrode portion, bus bar, or power line of the storage battery cell 10 is used. It is desirable to have a structure with additional members.

  The shape of the flow path in the storage battery grip 20 formed as the internal structure of the heat sink can be appropriately formed in consideration of the exhaust heat rate when the cooling fluid is circulated, but the efficiency of heat exchange In order to improve further, it is desirable to form the flow path which passes the position close to the electrode part so that the cooling fluid circulates in the vicinity of the electrode part which becomes the high temperature part of each storage battery cell 10.

  Moreover, in order to circulate the cooling fluid through the flow path in the storage battery gripping part 20, the pump provided outside the storage battery gripping part 20 should be driven by an uninterruptible power supply in order to maintain the cooling performance of the storage battery module 30. Is desirable.

  As shown in FIG. 1A, the storage battery gripping part 20 forming the heat sink has a structure in which the storage battery cells 10 are gripped in close contact so as to cover the entire exterior part (side surface part) of each storage battery cell 10. Therefore, the surface area of the heat sink structure of the storage battery gripping portion 20 is widened, and high-efficiency heat radiation can be performed for the heat generation of each storage battery cell 10 by the cooling fluid flowing through the flow path in the storage battery gripping portion 20. Thus, the cooling rate can be improved, and the temperature difference between the storage battery cells 10 can be reduced to suppress temperature variation.

  Furthermore, since the heat capacity of the storage battery gripping part 20 that grips each storage battery cell 10 is large, the cooling performance as the heat sink structure can be improved, and a rapid temperature rise when performing a high rate discharge operation can be prevented. You can also.

  Thus, the life of each storage battery cell 10 and storage battery module 30 can be improved.

  As the shape of the storage battery gripping portion 20 having the heat sink structure like this, for example, it is formed between the cylindrical batteries 1 (each storage battery cell 10 in FIG. 1) in the conventional storage battery module as shown in FIG. Since the shape corresponding to the shape of the gap portion is adopted, the volume of the storage battery module 30 can be configured so as not to change from the conventional storage battery module, and each storage battery cell 10 is cooled more reliably. The storage battery module 30 having a cooling mechanism that can be realized can be realized without changing the configuration of the conventional storage battery module.

  Next, a configuration example of a power supply rack in which a plurality of the storage battery modules 30 shown in FIG. 1 are stacked will be described with reference to FIG. FIG. 2 is a conceptual diagram showing a configuration example of a power supply rack (storage battery module rack) on which a plurality of storage battery modules 30 shown in FIG. 1 are mounted, and the storage battery module 30 housed in a battery box as shown in FIG. An example of the cooling mechanism for the entire power supply rack when the above-described structure is installed over a plurality of stages is shown.

  As shown in FIG. 2, the power supply rack 35 constituting the storage battery module rack is erected on the floor surface of the double underfloor structure. Under the floor, a cooling fluid (for cooling each storage battery module 30 ( For example, a cooling water tank 31 for storing a liquid refrigerant such as cooling water, and a flow path of the storage battery gripping portion 20 of the heat sink structure existing in each storage battery module 30 from the cooling water tank 31 via the cooling water pipe 33. A pump 32 for circulating the cooling fluid is provided.

  In addition, the cooling fluid stored in the cooling water tank 31 arrange | positioned under the floor by circulating the cooling air from the air conditioner 40 installed on the floor surface of a double under floor structure also under the floor. (For example, a liquid refrigerant such as cooling water) is cooled.

  The power supply rack 35 as shown in FIG. 2 increases the volume in the case of a power supply rack equipped with a plurality of conventional storage battery modules even when a cooling mechanism for cooling each storage battery module 30 of the power supply rack 35 is incorporated. The conventional power supply rack can be used as it is. By incorporating a cooling mechanism such as this, each storage battery cell 10 and each storage battery module 30 constituting the power supply rack 35 can be effectively cooled, and between each storage battery cell 10 as well as each storage battery module 30. The temperature difference between them can be reduced, the temperature of the entire power supply rack 35 can be made uniform, and the life of each storage battery cell 10 and each storage battery module 30 can be further improved.

  Further, as shown in FIG. 3, a cooling fluid flow path may also be formed in the connector portion 50. FIG. 3 is a schematic view showing an example of the structure of the connector portion 50 attached to the battery box of the storage battery module 30 shown in FIG. 1, and has a flow path for circulating a cooling fluid through the connector portion 50. The enlarged view which expanded the connector part 50 is also shown collectively.

  That is, as shown in the enlarged view of the connector portion 50 in FIG. 3, the connector portion 50 is connected to a power line connection for connecting a bus bar or a power line electrically connected to the electrode portion of the storage battery cell 10 of the storage battery module 30. In addition to the alarm line connection part 53 for connecting the alarm line for outputting the alarm information for the part 51, further, a cooling fluid (cooling water or the like) for cooling the connector part 50 that may be at a high temperature The cooling water connection part 52 which forms the flow path which flows the liquid refrigerant | coolant which consists of is provided. The cooling water connecting part 52 is provided at a position close to the power line connecting part 51 serving as a heating element, and the heat generation of the power line connecting part 51 is effectively performed by the cooling fluid circulating in the cooling water connecting part 52. To exhaust heat.

  In addition, if the cooling water connection part 52 of the connector part 50 is comprised so that it may connect with the flow path of the cooling fluid in the storage battery holding part 20 of a heat sink structure, the heat_generation | fever of each storage battery cell 10 and the heat_generation | fever of the connector part 50 will be carried out. The heat can be efficiently exhausted by the same cooling fluid.

DESCRIPTION OF SYMBOLS 1 ... Cylindrical battery, 2 ... Positive electrode, 3 ... Negative electrode, 4 ... Heat generation place, 5 ... Battery holding plate, 6 ... Dividing surface, 10 ... Storage battery cell, 11 ... Battery box base, 12 ... Outer box, 13 ... With box Cooling fan, 14 ... electric connector, 15 ... suction port, 20 ... storage battery gripping part, 21 ... cooling water valve, 30 ... storage battery module, 31 ... cooling water tank, 32 ... pump, 33 ... cooling water pipe, 35 ... power supply rack , 40 ... Air conditioner, 41 ... Battery box base, 42 ... Outer box, 43 ... Cooling fan, 44 ... Suction port, 50 ... Connector part, 51 ... Power line connection part, 52 ... Cooling water connection part, 53 ... Alarm line connection Department.

Claims (9)

  A storage battery module having a structure in which a plurality of storage battery cells arranged in a plurality of rows and stages are housed in a battery box in an integrated state by being held and fixed by a storage battery gripping section, wherein each storage battery cell is A flow path that circulates a cooling fluid for cooling each storage battery cell in the storage battery gripping portion, and has a shape for holding and fixing each of the storage battery cells by enclosing the outer packaging portion in close contact with each other. A storage battery module having a formed heat pipe structure.   2. The storage battery module according to claim 1, wherein the shape of the storage battery gripping part is a shape of a gap portion between the storage battery cells when the storage battery cells are arranged at predetermined intervals in a plurality of rows and multiple stages. A storage battery module having a corresponding shape.   3. The storage battery module according to claim 1, wherein the flow path formed in the storage battery gripping part has a shape passing through a position close to an electrode part of each storage battery cell. 4.   4. The storage battery module according to claim 1, wherein a connector portion attached to the battery box has a power line connection portion for connecting to a bus bar or a power line connected to an electrode portion of the storage battery cell, and the cooling. A storage battery module comprising at least a cooling water connection part for circulating a working fluid, wherein the cooling water connection part communicates with the flow path formed in the storage battery gripping part.   The storage battery module according to any one of claims 1 to 4, wherein a cooling water valve for circulating the cooling fluid from a cooling water tank installed outside to the flow path formed in the storage battery gripping part, A storage battery module, wherein the storage battery module is disposed on an end face of the storage battery grip.   6. The storage battery module according to claim 1, wherein the storage battery grip portion is formed of a metal having high thermal conductivity.   The storage battery module according to claim 6, wherein an insulating member is disposed between the storage battery grip part and the electrode part of the storage battery cell.   The storage battery module according to any one of claims 1 to 7, wherein each of the storage battery cells is a cylindrical battery having a cylindrical shape.   The storage battery module according to any one of claims 1 to 8, wherein the electrodes of the adjacent storage battery cells are connected in series.

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