TWI662762B - Charging device, method for determining charging sequence and method for power detection - Google Patents

Abstract

A charging device includes a power management circuit and a controller connected to each other by wires. The power management circuit is used to connect to the power supply, the first target device, and the second target device, to obtain a plurality of first input power information related to the input current of the first target device within a preset time, and to obtain the second target. The device is associated with a plurality of second input power information of the input current within the preset period of time. The controller calculates a first change rate of the first input power information and a second change rate of the second input power information, and sets a charging priority according to the first change rate and the second change rate. The charging priority sequence includes a first sequence position corresponding to the first target device and a second sequence position corresponding to the second target device.

Description

Charging device, charging sequencing method and power detection method

The present invention relates to a charging device, and more particularly to a charging device with a sorting function.

The charging cabinet is a device having multiple chargers to charge multiple target devices simultaneously. Generally, a charging device such as a charging cabinet detects the battery level of each target device before charging the target device. The current power detection method is to directly measure the DC voltage of the battery of the target device to convert it into battery power. The charging device must first obtain the DC voltage of the battery by using the communication protocol used in the target device, and then another charger or charging The cabinet transmits to the outside world through other communication methods.

Therefore, the charging device needs to be provided with a line capable of communicating with the target device. When the communication protocol used by the target device is not a well-known public communication protocol, the charging device needs to set up an operation procedure that interrupts the original communication protocol of the target device and then uses its own communication protocol to retrieve power information. As a result, not only the cost of the line setup is high, but also the communication method for obtaining power information is quite complicated.

In view of the above, the present invention provides a charging device, a charging sequencing method, and a power detection method.

A charging device according to an embodiment of the present invention includes a power management circuit and a controller connected to each other by wires. The power management circuit is configured to connect to the power supply, the first target device, and the second target device, obtain a plurality of first input power information related to the input current of the first target device within a preset time, and obtain a second The target device has a plurality of second input power information associated with the input current within the preset period of time. The controller calculates a first change rate of the first input power information and a second change rate of the second input power information, and sets a charging priority according to the first change rate and the second change rate. The charging priority sequence includes a first sequence position corresponding to the first target device and a second sequence position corresponding to the second target device.

A charging sequencing method according to an embodiment of the present invention includes obtaining a plurality of first input power information associated with an input current of a first target device within a preset period of time, and obtaining a second target device associated within the preset period of time. A plurality of second input power information on the input current; the second target device calculates a first change rate of the first input power information and calculates a second change rate of the second input power information; and according to the first change rate and the second The rate of change sets the charging priority order; wherein the charging priority order includes a first order bit corresponding to the first target device and a second order bit corresponding to the second target device.

A power detection method according to an embodiment of the present invention includes obtaining a plurality of input power information related to an input current of a target device within a preset time to calculate a change rate of the input power information; and according to the change rate and charging The characteristic curve determines the power ratio of the target device.

With the above structure, the charging device, the charging sequencing method, and the power detection method disclosed in the present case obtain the AC power information transmitted from the power supply to the target device through the power management circuit, and compare multiple power sources based on the AC power information and its change rate. The target device performs classification, charging sequencing, and power detection. This method does not need to enter the target device to obtain power information, reduces the cost of line setup, and simplifies the charging sequencing process.

The above description of the contents of this disclosure and the description of the following embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail in the following embodiments. The content is sufficient for any person skilled in the art to understand and implement the technical contents of the present invention. Anyone skilled in the relevant art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention in any way.

Please refer to FIG. 1, which is a schematic structural diagram of a charging device according to an embodiment of the present invention. As shown in FIG. 1, the charging device 1 includes a power management circuit 11 and a controller 13 electrically connected to each other. When the charging device 1 is operating, the power management circuit 11 is connected to the first target device 2a, the second target device 2b, and the power supply 3. The power management circuit 11 is configured to obtain a plurality of first input power information related to the input current of the first target device 2a within a preset period of time, and to obtain information of the second target device 2b related to the input current within the preset period of time. Multiple second input power information. The first target device 2a and the second target device 2b have the same type of batteries, that is, these batteries have similar charging characteristic curves.

In detail, the power supply 3 is, for example, an AC power supply for supplying AC power to the first target device 2a and the second target device 2b. The power management circuit 11 of the charging device 1 is disposed between the power supply 3 and the first target device 2a to obtain a plurality of first input power information associated with the input current of the first target device 2a for a preset period of time, wherein The input current of the first target device 2a is the AC current provided by the power supply 3; Similarly, the power management circuit 11 is also located between the power supply 3 and the second target device 2b to obtain the same preset time associated with the first target device 2b. The second input power information of the input current of the two target devices 2b, wherein the input current of the second target device 2b is the AC current provided by the power supply 3. The preset time may be a preset value in the power management circuit 11 or set by a user, and a detailed structure of the power management circuit 11 will be described later. For example, the first and second input power information obtained by the power management circuit 11 may be input current values provided by the power supply 3 to the first and second target devices 2a and 2b, respectively, and may also correspond to the input currents. Input electrical power.

The controller 13 is, for example, a microcontroller (MCU), and receives the plurality of first input power information and the plurality of second input power information from the power management circuit 11 to calculate the plurality of first input power The change rate of the information is used as the first change rate, and the change rate of the plurality of second input power information is calculated as the second change rate. In detail, the controller 13 may have memory to record the first and second input power information when the power management circuit 11 obtains the first and second input power information, and after recording the first and second input power information within the preset time. Then, a first rate of change is calculated based on the recorded first input power information, and a second rate of change is calculated based on the recorded second input power information. The first change rate of the first input power information indicates a change amount of the first input power information in a unit time, that is, a change amount of the first input power information within a preset time divided by a calculation result of the preset time. The second rate of change is available in the same way.

Then, the controller 13 sets the charging priority order according to the calculated first change rate and the second change rate, wherein the charging priority order includes sequences corresponding to the first target device 2a and the second target device 2b, respectively. Hereinafter, the order corresponding to the first target device 2a is referred to as a first order, and the order corresponding to the second target device 2b is referred to as a second order. It should be particularly noted that the first and second here are not used to indicate the sequential relationship of the two ordinal positions. In an embodiment, when the controller 13 determines that the first rate of change is greater than the second rate of change, the controller 13 sets the first order bit to take precedence over the second order bit. That is, the order arrangement in the charging priority order can be set according to the comparison of the rate of change of the input power information. A more detailed ordering method will be described later.

Next, please refer to FIG. 1 to FIG. 3 to explain the detailed architecture of the power management circuit. FIG. 2 is a detailed architecture diagram of a charging device according to an embodiment of the present invention; and FIG. 3 is another embodiment of the present invention. The detailed architecture diagram of the charging device is shown. 2 and 3 illustrate a detailed architecture of the power management circuit 11 of the charging device 1 of FIG. 1.

In an embodiment, as shown in FIG. 2, the charging device 1 ′ is the same as the charging device 1 of FIG. 1 and includes a power management circuit 11 ′ and a controller 13, wherein the power management circuit 11 ′ includes a power measurement meter 111, The switching circuit 113, the first relay 115a, and the second relay 115b. The controller 13 is connected to the power measuring meter 111, the first relay 115a, and the second relay 115b. The power meter 111 is used to connect to the power supply 3, and the first relay 115a and the second relay 115b are used to connect to the first target device 2a and the second target device 2b, respectively. For example, the power measurement meter 111 may be an ammeter for obtaining an input current value provided by the power supply 3 to the first target device 2a as the first power information, and similarly obtaining the second power information. For another example, the power measurement meter 111 may also be an electric power meter, which is used to obtain the electric power of the electric power provided by the power supply 3 to the first target device 2a as the first electric power information, and similarly to obtain the second electric power information. In this example, the electric power meter can be implemented by a microcontroller.

The switching circuit 113 is electrically connected to the electric power measuring meter 111, the first relay 115a, and the second relay 115b. The switching circuit 113 is composed of, for example, a plurality of switching elements. The target device 2a and the second target device 2b obtain the first power information and the second power information, respectively. In one embodiment, the switching circuit 113 may be integrated with the power meter 111 and controlled by the controller 13 in common. In another embodiment, the switching circuit 113 may be separately provided from the power measuring meter 111 and controlled by the controller 13 respectively. The first relay 115a is also controlled by the controller 13 to enable the power from the power supply 3 to be supplied to the first target device 2a when it is on, and the second relay 115b is the same as the first relay 115a, and will not be repeated here.

In another embodiment, as shown in FIG. 3, the charging device 1 ″ is the same as the charging device 1 of FIG. 1 and includes a power management circuit 11 ″ and a controller 13, wherein the power management circuit 11 ″ includes a first power measurement The meter 111a, the second electric power measuring meter 111b, the first relay 115a, and the second relay 115b. The controller 13 is electrically connected to the first electric power measuring meter 111a, the second electric power measuring meter 111b, the first relay 115a, and the first relay 115a. Two relays 115b. The first power meter 111a and the second power meter 111b are used to connect to the power supply 3, and the first relay 115a and the second relay 115b are used to connect to the first target device 2a and The second target device 2b. In other words, the first power meter 111a is provided between the power supply 3 and the first target device 2a (connected to the first target device 2a through the first relay 111a), and the second power amount The meter 111b is disposed between the power supply 3 and the second target device 2b (connected to the second target device 2b through the second relay 111b). With this, the first power measurement meter 111a can obtain the power supply 3 provided to the first target device 2a A first power input current information, and the second electric power can be obtained altimeter 111b associated with the second power supply provides power to the information input current of the second target device 2b, 3.

For example, the first and second power measuring meters 111a and 111b can be galvanometers, and the first power measuring meter 111a will obtain the input current value provided by the power supply 3 to the first target device 2a as the first An electric power information, and the second electric power measuring meter 111b obtains an input current value provided by the power supply 3 to the second target device 2b as the second electric power information. For another example, the first and second power measuring meters 111a and 111b may also be electric power meters, which are respectively used to obtain the electric power of the electric power input to the first and second target devices 2a and 2b as the first and second electric power. Information.

In the embodiments of FIG. 2 and FIG. 3 described above, after the controller 13 calculates the first change rate of the first power information and the second change rate of the second power information within a preset time and sets the charging priority order accordingly, According to this charging priority sequence, the first relay 115a and the second relay 115b are controlled to sequentially supply power to the first target device 11a and the second target device 11b. For example, when the controller 13 sets the order corresponding to the first target device 11a to have priority over the order corresponding to the second target device 11b, the controller 13 turns off the second relay 115b to stop the second target device 2b. Provide power, maintain the conduction of the first relay 115a to continuously supply power to the first target device 2a to charge it, and perform the judgment and setting of the priority again after a period of time.

Please refer to FIG. 4, which is a schematic diagram of a detailed structure of a charging device according to another embodiment of the present invention. As shown in FIG. 4, the charging device 1 ′ ′ ′ includes a power management circuit 11 ′ ′ ′, a controller 13, and a display 15. The controller 13 is electrically connected to the power management circuit 11 ′ ′ ′ and the display 15. The power management circuit 11 '' 'includes a plurality of power measuring meters 111 and a plurality of relays 115. In FIG. 4, each power meter 111 is connected to three relays 115 as an example. However, the number of power meters 111 and relays 115 is not limited to this. Like the charging device 1 in the embodiment shown in FIG. 1, when the charging device 1 ′ ″ in the embodiment shown in FIG. 4 is in operation, the power management circuit 11 ″ ′ is connected to a plurality of target devices 2 and a power supply. Power supply 3, wherein the power supply 3 is an AC power supply. In detail, the power management circuit 11 ′ ″ is connected to the target device 2 in a one-to-one relationship through the relay 115, and is connected to the power supply 3 by the power meter 111 to obtain the power supply 3 provided to the target Information on the power of the device 2 (ie, the first and second input power information in the foregoing embodiment). In more detail, the power measurement meter 111 may have a built-in switching circuit in the foregoing embodiment to switch to obtain input power information of the three target devices 2. In another example, the power measurement meter 111 may also include three measurement units to measure the input power information of the three target devices 2 respectively.

In addition, during operation, the power management circuit 11 '' 'is further connected to the second power supply 4. In detail, the second power supply 4 is a DC power supply, which supplies DC power to each power meter 111 through a DC power output terminal 41a, and provides DC power to each relay 115 through a DC power output terminal 41b. It works. For example, the voltage of the output power of the DC power output terminal 41a is 3.3 volts, and the voltage of the output power of the DC power output terminal 41b is 12 volts.

As described above, the controller 13 is electrically connected to the power management circuit 11 '' 'and the display 15. In detail, the controller 13 is electrically connected to each power measuring meter 111 to capture the input power information measured by the power measuring meter 111 to perform the aforementioned charging sequencing, and the controller 13 is also electrically connected to each The relays 115 (for example, through the control line 135 with 12 pins) control the power supply sequence of each relay 115 according to the charging sequencing result (that is, the charging priority order). The controller 13 is, for example, a microcontroller, and includes a storage medium 131 and a processing circuit 133. The storage medium 131 is, for example, a memory, and can record input power information of each target device 2 obtained from the power measurement meter 111. The processing circuit 133 The change rate of the input power information of each target device 2 is calculated to perform charging sequencing.

In another embodiment, the storage medium 131 stores a charging characteristic of a battery of the same type as the battery of the target device 2 (for example, it has a similar charging curve or the same material), for example, it is currently most commonly used in rechargeable batteries. Charging characteristics of the device's rechargeable battery. In this embodiment, the processing circuit 133 may obtain a plurality of input power information of the input current associated with a target device 2 within a preset time from the power meter 111 and calculate a change rate of the input power information. Subsequently, the power ratio of the target device 2 is determined based on the change rate and the charging characteristics in the storage medium 131. The detailed content of the charging characteristics and the detailed determination method of the power ratio will be described later. The display 15 is used to provide calculations and judgment results of the controller 13 by the outside (for example, a user). The display 15 is a display known to those having ordinary knowledge in the art, and will not be repeated here.

Please refer to FIG. 1, FIG. 5, and FIG. 6 together, where FIG. 5 is a flowchart of a charging sequencing method according to an embodiment of the present invention, and FIG. 6 is a charging characteristic according to an embodiment of the present invention. Graph. The charging sequencing method shown in FIG. 5 is applicable to the charging device 1 shown in FIG. 1. In step S51, the power management circuit 11 of the charging device 1 obtains the first target device 2 a associated with the input current within a preset time. First input power information, and multiple second input information associated with the input current by the second target device 2b during this preset period of time. For example, the power management circuit 11 is preset with a preset time to obtain the first and second input power information within the preset time. For another example, the power management circuit 11 can continuously obtain the first and second input power information, and the controller 13 is provided with a preset time to retrieve the first and second time from the power management circuit 11 within a preset time. Second input power information.

Next, in step S52, the controller 13 calculates a first change rate of the first input power information and a second change rate of the second input power information within a preset time. In detail, the first rate of change of the first input power information indicates a change amount of the first input power information in a unit time, that is, the calculation of the change amount of the first input power information within a preset time divided by the preset time. As a result, the second rate of change can be obtained in the same way. In another embodiment, when the controller 13 sequentially obtains three pieces of input power information within a preset time, the controller 13 may calculate the first and second pieces of input power information. Change rate between the second and third input power information, and then use the average of the two change rates as the calculation result. Similarly, more than three input power information change rates can be obtained. Then in step S53, the controller 13 sets the charging priority order according to the first change rate and the second change rate, that is, the charging order of each target device. The charging priority order includes a first order bit corresponding to the first target device 2a. And the second sequence position corresponding to the second target device 2b, the first and second here have nothing to do with the sequence of the two.

In detail, FIG. 6 exemplarily illustrates input electric power curves obtained after experiments of lithium batteries currently commonly used in rechargeable devices, to represent the charging characteristic curves of the batteries of the first and second target devices 2a and 2b. The charging characteristic curve includes an instantaneous electric power curve C1 and a cumulative electric power curve C2. As shown in Figure 6, during the initial rise of the cumulative electric power curve C2 (that is, when the battery starts charging from zero charge), the slope of the instantaneous electric power curve C1 gradually decreases from the maximum value, and then the cumulative electric power curve C2 gradually flattens (meaning That is, the battery capacity is gradually saturated), and the slope of the instantaneous electric power curve C1 turns to a negative value. From this, it can be known that as the power of the battery of the target device is gradually saturated, the rate of change in the electric power of the power input to the battery of the target device to charge it will gradually decrease. Therefore, the above charging sequencing method can know the magnitude relationship between the power of each target device by comparing the change rate of the input electric power of each target device, and then the target device with a smaller power (that is, the one with the larger change rate) ) The setting has a higher priority. It should be particularly noted that the above embodiments use the charging sequencing of the first and second target devices 2a and 2b as an example, but the charging sequencing method provided by the present invention can also be used for more than two target devices with the same battery characteristics. Sort of charging.

Please refer to FIG. 1 and FIG. 5 to FIG. 7 together. FIG. 7 is a flowchart of a charging sequencing method according to another embodiment of the present invention. Taking the architecture shown in FIG. 1 for implementing the charging sequencing method of FIG. 7 as an example, in step S71, the controller 13 obtains the target devices (that is, the first and second target devices 2a and 2b) through the power management circuit 11 respectively. A plurality of input power information related to input current within a set time. Next, the controller 13 judges the charging status of each target device based on the input power information of each target device and a judgment reference value. As described in steps S72 to S74, the controller 13 determines whether the average value of the input power information of the target device is It is greater than or equal to the judgment reference value. When the judgment result is yes, the controller 13 judges that the target device is in a constant current charging mode; when the judgment result is no, the controller 13 judges that the target device is in a constant voltage charging mode.

For example, as shown in the charging characteristic curve of FIG. 6, the entire charging process of the lithium battery includes a constant current charging stage CC and a constant voltage charging stage CV. The boundary between the two stages corresponds to the instantaneous electric power curve C1 which is approximately 20 watts. . According to this, the judgment reference value is set to, for example, 20 watts. When the average value of the multiple input electric powers of the target device is greater than or equal to 20 watts, it can be determined that the target device is in a constant current charging mode. When the average value is less than 20 watts, it is determined that the target device is in a constant voltage mode. By comparing the average value of multiple input electric powers with the judgment reference value to determine the charging mode of the target device, it is possible to avoid a situation in which an error is judged due to the abnormal single input electric power (for example, a surge). In this embodiment, the controller 13 sets the charging sequence of the target device in the constant current mode to have priority over the charging sequence of the target device in the constant voltage mode. For example, if the average value of the input electric power of the first target device 2a is the value of point Pavg2 in FIG. 7 and the average value of the input electric power of the second target device 2b is the value of point Pavg3, the controller 13 will determine the A target device 2a is in a constant current charging mode and a second target device 2b is in a constant voltage charging mode. The charging order of the first target device 2a is higher than that of the second target device 2b.

Further, as described above, the charging sequencing method provided by the present invention can be used for charging sequencing of two or more target devices having the same battery characteristics. In this embodiment, in step S75, when the controller 13 determines that the number of target devices in the constant current charging mode is multiple, the controller 13 will input electric power to the target devices in the constant current charging mode. The rate of change is compared to perform charging sequencing, similar to step S53 in FIG. 5. For example, as shown in FIG. 6, when the average value of the input electric power of the charging device 1 is the first target device 2a of the value of the point Pavg1, the second target device 2b having the average value of the input electric power is the value of the point Pavg2, and When the third target device with the average value of the input electric power is the value of the point Pavg3, when the charging sequencing method is performed, the controller 13 first determines that the average value of the input power of the third target device is less than the determination reference value of 20 watts, and therefore determines the third target device. It is in a constant voltage charging mode, and the average value of the input electric power of the first and second target devices 2a and 2b is greater than the judgment reference value. Therefore, it is determined that the first and second target devices 2a and 2b are in a constant current charging mode. Next, the controller 13 executes the charging sequencing step as described in step S53 of the first and second target devices 2a and 2b.

When the number of target devices determined by the controller 13 as the constant voltage charging mode is multiple, in an embodiment, the controller 13 may further sort the target devices according to the input electric power of the target devices. In detail, as shown in FIG. 6, in the constant voltage charging phase CV, the instantaneous input electric power of the battery decreases with the charging time. Therefore, the controller 13 can determine that the target device with a higher instantaneous input electric power has a higher The battery ratio is used to set the charging order of this target device to the last position. In another embodiment, the controller 13 no longer performs charging sequencing on the target device in the constant voltage charging mode, and cuts off the power provided to the target device in the constant voltage charging mode, as described in step S76. In this way, when the charging device 1 is applied to multiple target devices, the target devices can be classified according to the average value of the input power information and the judgment reference value, and then the charging order can be performed according to the rate of change of the input power information, and then Reduces the amount of computation required to perform charge sequencing.

Please refer to FIG. 1, FIG. 6 and FIG. 8 again. FIG. 8 is a flowchart of a power detection method according to an embodiment of the present invention. In this embodiment, taking the power detection of the first target device 2a as an example, the controller 13 of the charging device 1 stores a charging characteristic curve shown in FIG. 6, a calculation formula corresponding to the charging characteristic curve, or Charging characteristics stored in other forms. In step S81, the controller 13 obtains a plurality of input power information of the first target device 2a from the power management circuit 11 in a preset time and associated with the input current provided by the power supply 3 to the first target device 2a, and then calculates these Enter the rate of change of power information. Next, in step S82, the controller 13 determines the power ratio of the first target device 2a according to the calculated change rate and the pre-stored charging characteristic curve.

For example, as shown in FIG. 6, the input power information is, for example, electric power. When the value of the change rate of the input power information of the first target device 2a calculated by the controller 13 is equal to the slope of the point Pavg1 on the instantaneous electric power curve C1, To the cumulative electric power curve C2, at this time, the proportion of the electric quantity of the first target device 2a corresponds to the value of the point Pacc1 (about 40 watts) on the cumulative electric power curve C2. Therefore, compared to the final cumulative electric power of 1200 watts, the first target The power ratio of the device 2a is 3.33%. Similarly, for another example, when the value of the change rate of the input power information of the first target device 2a is equal to the slope of the point Pavg2 on the instantaneous power curve C1, the proportion of the power of the first target device 2a can be obtained by the final accumulated power Divided by the value of the point Pacc2 on the cumulative electric power curve C2, it is about 30%; and when the value of the change rate of the input power information of the first target device 2a is equal to the slope of the point Pavg3 on the instantaneous electric power curve C1, the first The power ratio of the target device 2a is about 83.33%.

In another embodiment, the controller 13 may have a power conversion formula pre-stored. After the controller 13 obtains a plurality of input power information of the target device within a preset time, the input power information corresponds to that provided by the power supply 3. The controller 13 can know the accumulated power provided by the power supply 3 to the target device within a preset time based on the accumulation of these input power information, and then obtain the electricity cost corresponding to the target device within a preset time through the electricity cost conversion formula. .

With the above structure, the charging device, the charging sequencing method, and the power detection method disclosed in the present case obtain the AC power information transmitted from the power supply to the target device through the power management circuit, and compare multiple power sources based on the AC power information and its change rate. The target device performs classification, charging sequencing, and power detection. This method does not need to enter the target device to obtain power information, reduces the cost of line setup, and simplifies the charging sequencing process.

Although the present invention is disclosed in the foregoing embodiments, it is not intended to limit the present invention. Changes and modifications made without departing from the spirit and scope of the present invention belong to the patent protection scope of the present invention. For the protection scope defined by the present invention, please refer to the attached patent application scope.

1,1 ’, 1”, 1 ”’ ‧‧‧Charging device

11, 11 ’, 11”, 11 ”’ ‧‧‧ Power Management Circuit

13‧‧‧controller

2a‧‧‧First target device

2b‧‧‧Second target device

3‧‧‧ Power Supply

111‧‧‧ Electricity Meter

113‧‧‧switching circuit

115a‧‧‧First Relay

115b‧‧‧Second Relay

111a‧‧‧The first power measurement meter

111b‧‧‧Second Electricity Meter

131‧‧‧Storage media

133‧‧‧Processing circuit

135‧‧‧Control line

2‧‧‧ target device

4‧‧‧Second power supply

41a, 41b‧‧‧DC output terminal

115‧‧‧ Relay

C1‧‧‧ instantaneous power curve

C2‧‧‧cumulative power curve

Pavg1 ~ Pavg3, Pacc1 ~ Pacc3‧‧‧points

CC‧‧‧Constant current stage

CV‧‧‧Constant voltage stage

FIG. 1 is a schematic structural diagram of a charging device according to an embodiment of the present invention. FIG. 2 is a detailed architecture diagram of a charging device according to an embodiment of the present invention. FIG. 3 is a detailed architecture diagram of a charging device according to another embodiment of the present invention. FIG. 4 is a detailed architecture diagram of a charging device according to another embodiment of the present invention. FIG. 5 is a flowchart of a charging sequencing method according to an embodiment of the present invention. FIG. 6 is a charging characteristic curve diagram according to an embodiment of the present invention. FIG. 7 is a flowchart of a charging sequencing method according to another embodiment of the present invention. FIG. 8 is a flowchart of a power detection method according to an embodiment of the present invention.

Claims (14)

A charging device includes: a power management circuit for connecting to a power supply, a first target device, and a second target device, and obtaining a plurality of times that the first target device is associated with an input current within a preset time; First input power information, and obtain a plurality of second input power information associated with the input current of the second target device within the preset period of time; and a controller electrically connected to the power management circuit to calculate the A first change rate of the first input power information and a second change rate of the second input power information, and a charging priority order is set according to the first change rate and the second change rate; wherein the charging priority order includes A first order bit corresponding to the first target device and a second order bit corresponding to the second target device. According to the charging device described in claim 1, when the controller determines that the first change rate is greater than the second change rate, the controller sets the first order bit to take precedence over the second order bit. The charging device according to claim 1, wherein the controller further determines that the first target device is in a certain current charging mode when the average value of the first input power information is greater than or equal to a judgment reference value, and when the When the average value of the first input power information is smaller than the determination reference value, it is determined that the first target device is in the constant voltage charging mode. The charging device according to claim 1, wherein the power management circuit includes a power measuring meter, a switching circuit, a first relay, and a second relay, and the controller is electrically connected to the power measuring meter, the first A relay and the second relay, the switching circuit is connected to the power meter, the first relay, and the second relay, and the first and second relays are respectively used to connect to the first and second target devices, The power meter is connected to the power supply, and obtains the first power information and the second power information through the switching circuit. The charging device according to claim 1, wherein the power management circuit includes a first power meter, a first relay, a second power meter, and a second relay, and the controller is electrically connected to the controller. First and second electric power meters are electrically connected to the first and second relays, and the first and second electric power meters are electrically connected to the first and second relays, respectively. Two relays are respectively connected to the first and second target devices, and the first power meter is configured to be disposed between the power supply and the first target device to obtain the first power information, and the The second power measurement meter is configured between the power supply and the second target device to obtain the second power information. The charging device according to claim 4 or 5, wherein the controller further controls the first relay and the second relay to sequentially supply power to the first target device and the second target device according to the charging priority order. A charging sequencing method includes: obtaining a plurality of first input power information associated with an input current by a first target device within a preset period of time, and obtaining a second target device associated with an input current within the preset period of time A plurality of second input power information; calculating a first change rate of the first input power information and calculating a second change rate of the second input power information; and according to the first change rate and the second change Setting a charging priority order; wherein the charging priority order includes a first order bit corresponding to the first target device and a second order bit corresponding to the second target device. The charging sequencing method according to claim 7, wherein setting the charging priority according to the first rate of change and the second rate of change includes setting the first order when the first rate of change is greater than the second rate of change Takes precedence over this second order. The charging sequencing method according to claim 7, further comprising judging that the first target device is in a certain voltage charging mode or a certain current charging mode according to the first input power information and a judgment reference value, and according to the second inputs The power information and the judgment reference value determine whether the second target device is in the constant voltage charging mode or the constant current charging mode. The charging sequencing method according to claim 9, further comprising determining that the first target device is in the constant current charging mode when the average value of the first input power information is greater than or equal to the determination reference value, and when the When the average value of the first input power information is smaller than the determination reference value, it is determined that the first target device is in the constant voltage charging mode. The charging sequencing method according to claim 7, wherein the first input power information indicates the input electric power of the first target device, and the second input power information indicates the input electric power of the second target device. The charging sequencing method according to claim 7, further comprising sequentially supplying power to the first target device and the second target device according to the charging priority. The charging sequencing method according to claim 7, further comprising obtaining an electricity charge corresponding to the first target device within the preset time according to an accumulated value of the first input power information and an electricity charge conversion formula. A power detection method includes: obtaining a plurality of input power information related to an input current of a target device within a preset time to calculate a change rate of the input power information; and according to the change rate and a charging characteristic curve Determine the power ratio of the target device.