Battery pack detection device

Abstract

The utility model relates to the technical field of battery pack detection, and discloses a battery pack detection device. The battery pack detection device can comprise a power supply, a power supply adapter plate, a battery pack data acquisition plate, a display screen and a battery pack interface. Wherein the power supply adapter plate is respectively connected with the power supply, the battery pack data acquisition board, the display screen and the battery pack interface; the battery pack data acquisition board is connected with the display screen; moreover, in the power supply adapter board, the interface used for connecting the battery pack interface and the interface used for connecting the battery pack data acquisition board are connected through internal wiring. Thus, after the battery pack interface is connected with the communication interface of the battery pack, a data transmission channel can be formed among the battery pack, the battery pack interface, the battery pack data acquisition board and the display screen, and the battery pack data acquisition board can acquire battery pack data and transmit the battery pack data to the display screen for display. Therefore, the user can conveniently test the performance parameters of the battery pack in any time period.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery pack detection, and particularly relates to a battery pack detection device. BACKGROUND

[0002] In a new energy electric vehicle, a battery pack is a core component, and the performance of the battery pack directly affects the performance and safety of the vehicle. When the battery pack is assembled on the production line, the performance (such as voltage, temperature, etc.) of the battery pack is usually detected on a fixed detection table of the manufacturer. However, after the battery pack is delivered, how to enable the user to accurately and efficiently detect the performance of the battery pack is a problem to be solved at present. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a battery pack detection device, which can enable the user to conveniently test the performance parameters of the battery pack at any time.

[0004] In a first aspect, the present application provides a battery pack detection device, comprising a power supply, a power supply adapter plate, a battery pack data acquisition plate, a display screen and a battery pack interface; wherein the display screen is connected with the battery pack data acquisition plate; the power supply adapter plate comprises a first interface, a second interface, a third interface, a fourth interface and a fifth interface; the power supply adapter plate is connected with the power supply through the first interface, connected with the display screen through the second interface, connected with the battery pack interface through the fifth interface, and connected with the battery pack data acquisition plate through the third interface and the fourth interface respectively, and the fourth interface is connected with the fifth interface.

[0005] In the present application, the power supply can be the power supply 101 mentioned below; the power supply adapter plate can be the power supply adapter plate 102 mentioned below; the battery pack data acquisition plate can be the battery pack data acquisition plate 104 or the cell monitor unit (CMU) plate 104 mentioned below; the display screen can be the display screen 105 mentioned below; the battery pack interface can be the battery pack interface 103 mentioned below; the first interface can be the interface P1 mentioned below; the second interface can be the interface P2 mentioned below; the third interface can be the interface P3 mentioned below; the fourth interface can be the interface P4 mentioned below; and the fifth interface can be the interface P5 mentioned below.

[0006] In some embodiments, there is usually a circuit board (which can be described as a CMU plate) in the battery management system of a new energy vehicle, which can collect and transmit the voltage, temperature, remaining capacity and other data of the battery pack. Therefore, in the battery pack detection device provided in the present application, the CMU plate can be used as the battery pack data acquisition plate mentioned in the present application, so that the battery pack detection device can collect the battery pack data through the CMU plate.

[0007] In the battery pack detection device provided in the present application, the power supply is connected with the power supply adapter plate, and the power supply adapter plate is also connected with the battery pack interface, the CMU plate, and the display screen and other modules respectively, so that the current flows from the power supply to the power supply adapter plate, and then flows from the power supply adapter plate to the other modules connected therewith, thereby enabling each module in the battery pack detection device to enter a powered state.

[0008] In addition, the battery pack interface is a communication interface matched with the communication interface of the battery pack, and can be connected with the communication interface of the battery pack to form a plug-in connection; and inside the power supply adapter plate, the fifth interface for connecting the battery pack interface and the fourth interface for connecting the battery pack data acquisition plate can be connected through internal wiring of the power supply adapter plate. Therefore, after the battery pack interface in the battery pack detection device is connected with the communication interface of the battery pack, a data transmission channel can be formed between the battery pack, the battery pack interface, the battery pack data acquisition plate, and the display screen, and the battery pack data acquisition plate can acquire the battery pack data and transmit it to the display screen for display.

[0009] In this way, through the battery pack detection device provided in the present application, the user can conveniently test the performance parameters of the battery pack at any time period. For example, when the battery pack leaves the production line, or when the battery pack has been placed in the warehouse for a long time, or when the battery pack needs to be repaired after sale, the user can detect the performance parameters of the battery pack through the battery pack detection device provided in the present application, so as to determine whether the battery pack can work normally.

[0010] In a possible implementation of the first aspect, the first interface of the power supply adapter plate is connected with the power supply through a power supply line; the second interface of the power supply adapter plate is connected with the display screen through a power supply line; the third interface of the power supply adapter plate is connected with the battery pack data acquisition plate through a power supply line; the fourth interface of the power supply adapter plate is connected with the battery pack data acquisition plate through a communication line; and the fifth interface of the power supply adapter plate is connected with the battery pack interface through a power supply line and a communication line.

[0011] In some embodiments, the power supply line mentioned above can be a 24V power supply line; and the communication line can be a controller area network (CAN) communication line.

[0012] In a possible implementation of the first aspect, the fourth interface and the fifth interface are connected through internal wiring of the power supply adapter plate.

[0013] It can be understood that the battery pack is connected with the battery pack interface in the battery pack detection device, the battery pack interface is connected with the fifth interface of the power adapter board, the fourth interface of the power adapter board is connected with the CMU board, and the CMU board is connected with the display screen. Therefore, after the fifth interface and the fourth interface of the power adapter board are connected, a data transmission channel is formed between the battery pack, the battery pack interface, the fifth interface, the fourth interface, the CMU board and the display screen, so that the battery pack data can be transmitted to the display screen for display.

[0014] In a possible implementation of the first aspect, the power adapter board further includes a first power supply circuit, a second power supply circuit and a third power supply circuit; a first end of the first power supply circuit is connected with the first interface, and a second end of the first power supply circuit is connected with the second interface; a first end of the second power supply circuit is connected with the first interface, and a second end of the second power supply circuit is connected with the third interface; a first end of the third power supply circuit is connected with the first interface, and a second end of the third power supply circuit is connected with the fifth interface.

[0015] In a possible implementation of the first aspect, the power adapter board further includes a first switch; a first end of the first switch is connected with the first interface, and a second end of the first switch is connected with the first end of the first power supply circuit, the first end of the second power supply circuit and the first end of the third power supply circuit respectively.

[0016] In the present application, the first switch can be the switch S1 mentioned below.

[0017] It can be understood that in the entire battery pack detection device, the first interface is connected with the power supply, so when the power supply supplies power to the first interface and the first switch is closed, the first power supply circuit, the second power supply circuit and the third power supply circuit can enter the conduction state.

[0018] In a possible implementation of the first aspect, the power adapter board further includes a first capacitor and a second capacitor; a first pin of the first interface is connected with a first end of the first capacitor, a first end of the second capacitor and a first end of the first switch respectively; a second pin of the first interface of the power adapter board is grounded; a second end of the first capacitor is grounded; and a second end of the second capacitor is grounded.

[0019] In the present application, the first capacitor can be the capacitor C1 mentioned below; the second capacitor can be the capacitor C2 mentioned below; the first pin of the first interface can be the pin 1 of the interface P1 mentioned below; and the second pin of the first interface can be the pin 2 of the interface P2 mentioned below.

[0020] In a possible implementation of the first aspect, the first power supply circuit includes a first resistor, a first inductor, a first diode, a second diode, a third capacitor, and a fourth capacitor; a first end of the first resistor is connected to the second end of the first switch, and a second end of the first resistor is connected to a first end of the first inductor; a second end of the first inductor is connected to a first end of the first diode; a second end of the first diode is connected to a first pin of the second interface, a first end of the second diode, a first end of the third capacitor, and a first end of the fourth capacitor respectively; a second pin of the second interface is grounded, a second end of the second diode is grounded, a second end of the third capacitor is grounded, and a second end of the fourth capacitor is grounded.

[0021] In the present application, the first resistor can be resistor R11 mentioned hereinafter; the first inductor can be inductor L11 mentioned hereinafter; the first diode can be diode T11 mentioned hereinafter; the second diode can be diode T12 mentioned hereinafter; the third capacitor can be capacitor C11 mentioned hereinafter; the fourth capacitor can be capacitor C12 mentioned hereinafter; the first pin of the second interface can be pin 1 of interface P2 mentioned hereinafter; and the second pin of the second interface can be pin 2 of interface P2 mentioned hereinafter.

[0022] In a possible implementation of the first aspect, the second power supply circuit includes a second resistor, a second inductor, a third diode, a fourth diode, a fifth capacitor, and a sixth capacitor; a first end of the second resistor is connected to the second end of the first switch, and a second end of the second resistor is connected to a first end of the second inductor; a second end of the second inductor is connected to a first end of the third diode; a second end of the third diode is connected to a first pin of the third interface, a first end of the fourth diode, a first end of the fifth capacitor, and a first end of the sixth capacitor respectively; a second pin of the third interface is grounded, a second end of the fourth diode is grounded, a second end of the fifth capacitor is grounded, and a second end of the sixth capacitor is grounded.

[0023] In the present application, the second resistor can be resistor R21 mentioned hereinafter; the second inductor can be inductor L21 mentioned hereinafter; the third diode can be diode T21 mentioned hereinafter; the fourth diode can be diode T22 mentioned hereinafter; the fifth capacitor can be capacitor C21 mentioned hereinafter; the sixth capacitor can be capacitor C22 mentioned hereinafter; the first pin of the third interface can be pin 1 of interface P3 mentioned hereinafter; and the second pin of the third interface can be pin 2 of interface P3 mentioned hereinafter.

[0024] In a possible implementation of the first aspect, the third power supply circuit includes a third resistor, a third inductor, a fifth diode, a sixth diode, a seventh capacitor, and an eighth capacitor; the first end of the third resistor is connected to the second end of the first switch, and the second end of the third resistor is connected to the first end of the third inductor; the second end of the third inductor is connected to the first end of the fifth diode; the second end of the fifth diode is connected to the first pin of the fifth interface, the first end of the sixth diode, the first end of the seventh capacitor, and the first end of the eighth capacitor respectively; the second pin of the fifth interface is grounded, the second end of the sixth diode is grounded, the second end of the seventh capacitor is grounded, and the second end of the eighth capacitor is grounded.

[0025] In the present application, the third resistor can be resistor R31 mentioned hereinafter; the third inductor can be inductor L31 mentioned hereinafter; the fifth diode can be diode T31 mentioned hereinafter; the sixth diode can be diode T32 mentioned hereinafter; the seventh capacitor can be capacitor C31 mentioned hereinafter; the eighth capacitor can be capacitor C32 mentioned hereinafter; the first pin of the fifth interface can be pin 1 of interface P5 mentioned hereinafter; and the second pin of the sixth interface can be pin 2 of interface P5 mentioned hereinafter.

[0026] In a possible implementation of the first aspect, the third pin of the fifth interface is connected to the second pin of the fourth interface, and the fourth pin of the fifth interface is connected to the first pin of the fourth interface.

[0027] In the present application, the third pin of the fifth interface can be pin 3 of interface P5 mentioned hereinafter; the fourth pin of the fifth interface can be pin 4 of interface P5 mentioned hereinafter; the first pin of the fourth interface can be pin 1 of interface P4 mentioned hereinafter; and the second pin of the fourth interface can be pin 2 of interface P4 mentioned hereinafter.

[0028] The present application has the following beneficial effects: in the embodiments of the present application, the battery pack interface is a communication interface matched with the communication interface of the battery pack, and can be connected to the communication interface of the battery pack to form a plug-in connection; and in the internal part of the power adapter board, the fifth interface for connecting the battery pack interface and the fourth interface for connecting the battery pack data acquisition board can be connected through the internal wiring of the power adapter board. Therefore, after the battery pack interface of the battery pack detection device is connected to the communication interface of the battery pack, a data transmission channel can be formed between the battery pack, the battery pack interface, the battery pack data acquisition board, and the display screen, the battery pack data acquisition board can acquire data of the battery pack and transmit the data to the display screen for display. In this way, the battery pack detection device provided by the present application can enable the user to conveniently test the performance parameters of the battery pack at any time period. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 According to some embodiments of the present application, a circuit frame structure schematic diagram of a battery pack detection device is shown;

[0030] Figure 2 According to some embodiments of the present application, a structural schematic diagram of a battery pack detection device is shown;

[0031] Figure 3A According to some embodiments of the present application, a schematic diagram of a first wire harness is shown;

[0032] Figure 3B According to some embodiments of the present application, a schematic diagram of a plug and a pin is shown;

[0033] Figure 3C According to some embodiments of the present application, a schematic diagram of a second wire harness is shown;

[0034] Figure 4 According to some embodiments of the present application, schematic diagrams of a third, fourth and fifth wire harness are shown;

[0035] Figure 5 According to some embodiments of the present application, a schematic diagram of a sixth wire harness is shown;

[0036] Figure 6 According to some embodiments of the present application, a circuit frame schematic diagram of a power adapter board is shown;

[0037] Figure 7 According to some embodiments of the present application, an internal circuit connection structure schematic diagram of a power adapter board is shown. DETAILED DESCRIPTION

[0038] The illustrative embodiments of the present application include, but are not limited to, a battery pack detection device.

[0039] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme in the present application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0040] It can be understood that, as a core component of new energy electric vehicles, the voltage, temperature and other performances of the battery pack will directly affect the usability and safety of new energy vehicles. Therefore, if a portable battery pack detection device is designed, users can efficiently and accurately detect the performance of the battery pack at any time period after the production of the battery pack, which is of great significance to improving the quality of the battery pack and ensuring user safety.

[0041] To solve the above problems, the application provides a battery pack detection device. Specifically, referring to Figure 1 As shown in the figure, in the battery pack detection device 10 provided by the application, a power supply 101, a power supply adapter plate 102, a battery pack interface 103, a battery pack data acquisition plate 104, and a display screen 105 can be included. Among them, the power supply 101 is connected with the power supply adapter plate 102, and the power supply adapter plate 102 is also connected with the battery pack interface 103, the battery pack data acquisition plate 104, and the display screen 105 respectively, so that the power supply 101 can supply power to the battery pack interface 103, the battery pack data acquisition plate 104, and the display screen 105 through the power supply adapter plate 102. And in the battery pack detection device 10, the battery pack data acquisition plate 104 can also be connected with the display screen 105.

[0042] Among them, the battery pack interface 103 is a communication interface matched with the communication interface of the battery pack 20, which can be connected with the communication interface of the battery pack 20 to form a plug-in; and in the internal of the power supply adapter plate 102, the interface for connecting the battery pack interface 103 and the interface for connecting the battery pack data acquisition plate 104 can be connected through the internal wiring of the power supply adapter plate 102. Therefore, after connecting the battery pack interface 103 of the battery pack detection device 10 with the communication interface of the battery pack 20, a data transmission channel can be formed between the battery pack 20, the battery pack interface 103, the battery pack data acquisition plate 104, and the display screen 105, and the battery pack data acquisition plate 104 can collect the data of the battery pack 20 and transmit it to the display screen 105 for display.

[0043] In this way, through the battery pack detection device provided by the application, the user can conveniently test the performance parameters of the battery pack at any time. For example, when the battery pack leaves the production line, or when the battery pack has been placed in the warehouse for a long time, or when the battery pack needs to be repaired after sale, the user can detect the performance parameters of the battery pack through the battery pack detection device provided by the application, so as to judge whether the battery pack can work normally.

[0044] Among them, in the battery management system of new energy vehicles, there is usually a kind of circuit board (which can be described as a cell monitor unit (CMU) board), which can collect and transmit the data such as voltage, temperature, and remaining capacity of the battery pack. Therefore, in the battery pack detection device provided by the application, the CMU board can be used as the battery pack data acquisition plate mentioned in the application, so that the battery pack detection device can collect the battery pack data through the CMU board.

[0045] For ease of description, the following embodiments take the battery pack data acquisition board 104 as the CMU board 104 as an example to describe the battery pack detection device provided by the present application.

[0046] Specifically, the specific connection mode of the battery pack detection device can be described with reference to the schematic view shown in Figure 2

[0047] In the battery pack detection device shown in Figure 2 In the battery pack detection device shown in, the power adapter board 102 is connected with the power supply 101 through the interface P1 (as an example of the first interface); the power adapter board 102 is connected with the display screen 105 through the interface P2 (as an example of the second interface); the power adapter board 102 is connected with the battery pack interface 103 through the interface P5 (as an example of the fifth interface); the power adapter board 102 is connected with the CMU board 104 through the interface P3 (as an example of the third interface) and the interface P4 (as an example of the fourth interface) respectively; and the display screen 105 is connected with the CMU board 104. Specifically, the specific connection mode between the interfaces and the modules can be described with reference to the following embodiments.

[0048] Firstly, the connection mode between the interface P1 and the power supply 101 will be described. Specifically, with reference to the schematic view shown in Figure 2 As shown in, the interface P1 and the power supply 101 can be connected through the wire harness L1, and the wire harness L1 can be a power supply wire. In this way, the current can flow from the power supply 101 to the interface P1 through the wire harness L1, and then the current can flow to other interfaces (such as the interface P2) through the internal wiring of the power adapter board 102, and further can supply power to the modules connected with the other interfaces (such as the display screen 105 connected with the interface P2).

[0049] Specifically, the power supply 101 can be a battery, and the wire harness L1 between the power supply 101 and the interface P1 can be any type of power supply wire, and the length of the wire harness L1 can be any length. For example, with reference to the schematic view shown in Figure 3A As shown in, the wire harness L1 between the power supply 101 and the interface P1 can be a 24V power supply wire, that is, the power supply voltage of the power supply 101 to the interface P1 can be 24V. And if the length of the 24V power supply wire is 100mm, the wire harness tolerance (that is, the length error) can be -0mm~+10mm, that is, the wire harness L1 can be 100mm at the shortest and 110mm at the longest. Similarly, the length of the wire harness L1 between the power supply 101 and the interface P1 can also be any other length (such as 60mm, 150mm, etc.), and the wire harness tolerance can also be any value (such as -10mm~+10mm, -5mm~+0mm, etc.), which is not limited by the present application.

[0050] ​Moreover, a number tube mark can be arranged on the wire harness L1 between the power supply 101 and the interface P1, where the number tube mark is a label for marking the pin number of an electronic component, so as to uniquely mark the connection end of the wire harness L1, thereby facilitating subsequent maintenance and identification. The number tube mark can be arranged at any position of the wire harness L1. For example, as shown in Figure 3A , the wire harness L1 can include a positive voltage line (24V+ voltage line) and a negative voltage line (24V- voltage line), and a number tube mark can be arranged at each end of each wire (i.e., four connection ends). The four number tubes recording the number tube marks can be arranged at a position 10 mm away from the connection end. In addition, the number tube mark can also be arranged at other positions, such as 8 mm, 12 mm, etc., which are not limited in the present application.

[0051] Moreover, as shown in Figure 3A , one end of the wire harness L1 can be connected to a plug and a pin (the plug and the pin can constitute a connector), so that the wire harness L1 can be connected to the power supply 101 through the connector. The other end of the wire harness L1 can also be connected to a plug and a pin (the plug and the pin can constitute a connector), so that the wire harness L1 can be connected to the interface P1 through the connector. The connectors at both ends of the wire harness L1 can be any type of plug and pin. For example, the plug can be the plug 301 shown in Figure 3B , and the plug type of the plug 301 can be HX25002-2Y. Alternatively, the pin can be the pin 302 shown in Figure 3B , and the pin type of the pin 302 can be HX25002-PT.

[0052] Therefore, as shown in Figure 2 , by connecting the wire harness L1 between the power supply 101 and the interface P1 of the power supply adapter board 102, the power supply 101 can supply power to the interface P1 through the wire harness L1, and further supply power to other modules connected to the power supply adapter board 102.

[0053] In addition, in other embodiments, as shown in the power supply adapter board 102 in Figure 2 , a switch S1 (as an example of a first switch) can also be present. The first end of the switch S1 is connected to the interface P1, and the second end of the switch S2 is connected to the circuit path of the interface P2, the circuit path of the interface P3, and the circuit path of the interface P5, respectively.

[0054] It should be understood that in some embodiments, the switch S1 should be exposed from the shell of the battery pack detection device. That is, even if the switch S1 is arranged in the shell of the battery pack detection device, the switch S1 should be exposed from the shell of the battery pack detection device. For example, as shown in Figure 2The battery pack detection device shown is packaged, and the switch S1 needs to be visible from the outside so that the user can control whether the battery pack detection device needs to enter the working state by operating the switch S1.

[0055] Thus, when the switch S1 is closed, the circuit paths of the power supply 101, the interface P1, the switch S1, and the interface P2 can form a path to enter the conduction state, and thus the interface P2 and the display screen 105 connected to the interface P2 can be powered on; the circuit paths of the power supply 101, the interface P1, the switch S1, and the interface P3 can form a path to enter the conduction state, and thus the interface P3 and the CMU board 104 connected to the interface P3 can be powered on; and the circuit paths of the power supply 101, the interface P1, the switch S1, and the interface P5 can also form a path to enter the conduction state, and thus the interface P5 and the battery pack interface 103 connected to the interface P5 can be powered on. Conversely, when the switch S1 is open, the interfaces of the power supply adapter board 102 are all in a power-off state, and thus cannot supply power to the modules connected to the other interfaces, so that the battery pack detection device cannot detect the battery pack.

[0056] In other embodiments, continuing to refer to Figure 2 The battery pack detection device shown is described to describe the connection mode between the interface P2 and the display screen 105. Specifically, referring to Figure 2 As shown, the interface P2 in the power supply adapter board 102 can be connected to the display screen 105 through the wire harness L2, and the wire harness L2 can be a power supply wire. Thus, when the power supply 101 supplies power to the interface P1, if the switch S1 is closed, the current can flow to the interface P2, and thus the display screen 105 can be powered on, so that the display screen 105 enters the working state.

[0057] The wire harness L2 between the interface P2 and the display screen 105 can be any type of power supply wire, and the length of the wire harness L2 can be any length. For example, referring to Figure 3C As shown, the wire harness L2 between the interface P2 and the display screen 105 can be a 24V power supply wire, that is, the voltage of the power supply from the interface P2 to the display screen 105 through the wire harness L2 can be 24V. Moreover, if the length of the 24V power supply wire is 100mm, the wire harness tolerance can be -0mm to +10mm, that is, the shortest can be 100mm, and the longest can be 110mm. The present application does not limit this.

[0058] Moreover, a number tube identifier can be provided on the wire harness L2 between the interface P2 and the display screen 105. For example, referring to Figure 3CAs shown, wire harness L2 may include a positive voltage line (24V+ voltage line) and a negative voltage line (24V- voltage line), and each of the two ends of each line (i.e., the four connection ends) can be respectively provided with a number tube identifier. The four number tubes with the number tube identifiers can be respectively set at a position 10mm away from the connection end. Alternatively, the number tube identifiers can be set at other positions, such as 6mm or 10mm away from the connection end, etc., and this application does not limit this.

[0059] Furthermore, refer to Figure 3C As shown, one end of the wire harness L2 can be connected to a plug and pins (the plug and pins can form a connector), so that the wire harness L2 can be connected to the interface P2 through this connector. The connector can be any type of plug and pin. For example, the plug can be the one described above. Figure 3B The plug 301 shown is model HX25002-2Y, and its pins can be... Figure 3B The pin 302 shown is model HX25002-PT. The other end of the wire harness L2 can be directly stripped and connected to the display screen 105. The stripped length should be less than the distance between the number tube marking and the connection end, and the stripped length can be any length. For example, if the number tube marking is 10mm from the connection end, the stripped length can be any length less than 10mm, such as 5mm, 7mm, etc. This application does not impose any limitation on this.

[0060] Thus, for reference Figure 2 As shown, by connecting the wiring harness L2 between the interface P2 and the display screen 105, current can flow through the interface P2 to the display screen 105, thereby enabling the display screen 105 to enter the working state and display the performance parameters of the battery pack for the user to view.

[0061] Next, continue to refer to Figure 2 The battery pack testing device shown is described in terms of the connection method between interface P3 and CMU board 104. Specifically, refer to... Figure 2 As shown, interface P3 and CMU board 104 can be connected via wiring harness L3, which can be a power supply line. Thus, when power supply 101 supplies power to interface P1, if switch S1 is closed, current can flow to interface P3, and then to CMU board 104, causing CMU board 104 to enter the working state to collect the performance parameters of the battery pack.

[0062] The wiring harness L3 between interface P3 and CMU board 104 can be any type of power supply line, and the length of the wiring harness L3 can be any length. For example, refer to... Figure 4As shown in FIG. (a) of the drawings, the wire harness L3 between the interface P3 and the CMU board 104 can be a 24V power supply line, that is, the voltage of the power supply from the interface P3 to the CMU board 104 can be 24V. Moreover, if the length of the 24V power supply line is 100mm, the wire harness tolerance can be -0mm~+10mm, that is, the shortest length can be 100mm and the longest length can be 110mm. The present application does not limit this.

[0063] Moreover, a number tube mark can be provided on the wire harness L3 between the interface P3 and the CMU board 104. For example, referring to Figure 4 As shown in FIG. (a) of the drawings, the wire harness L3 can include a positive voltage line (24V+ voltage line) and a negative voltage line (24V- voltage line), and a number tube mark can be provided on each end of each wire (that is, four connection ends). Among them, the four number tubes recording the number tube marks can be respectively provided at a position 10mm away from the connection end. In addition, the number tube mark can also be provided at other positions, which are not limited by the present application.

[0064] Moreover, referring to Figure 4 As shown in FIG. (a) of the drawings, one end (for example, the left end) of the wire harness L3 can be connected to a plug and a pin (the plug and the pin can constitute a connector), so that the wire harness L3 can be connected to the interface P3 through the connector. Among them, the connector can be any type of plug and pin. For example, the plug can be the plug 301 of model HX25002-2Y shown in Figure 3B , and the pin can be the pin 302 of model HX25002-PT shown in Figure 3B . In addition, the other end (for example, the right end) of the wire harness L3 can be respectively connected to the pin 1 and the pin 2 of the plug 303, and by inserting the plug 303 into the CMU board 104, the wire harness L3 can be connected to the CMU board 104.

[0065] In this way, referring to Figure 2 , by connecting the wire harness L3 between the interface P3 and the CMU board 104, the current can flow from the interface P3 to the CMU board 104, so that the CMU board 104 enters the working state to collect the performance parameters of the battery pack.

[0066] Next, the connection mode between the interface P4 and the CMU board 104 will be described with reference to the battery pack detection device shown in Figure 2 . Specifically, referring to Figure 2 , the interface P4 and the CMU board 104 can be connected through a wire harness L4, and the wire harness L4 can be a communication line. In this way, the data of the battery pack can be transmitted to the CMU board 104 through the wire harness L4.

[0067] The wire harness L4 between the interface P4 and the CMU board 104 can be any type of communication line, and the length of the wire harness L4 can be any length. For example, referring to FIG. (b) of Figure 4 , the wire harness L4 between the interface P4 and the CMU board 104 can be a controller area network (CAN) communication line, which has the characteristic of efficient data transmission, so that the battery pack data can be transmitted to the CMU board 104 through the wire harness L4. Moreover, if the length of the CAN communication line is 100 mm, the wire harness tolerance can be -0 mm to +10 mm. The present application does not limit this.

[0068] Moreover, a number tube identifier can be arranged on the wire harness L4 between the interface P4 and the CMU board 104. For example, referring to FIG. (b) of Figure 4 , the wire harness L4 can include a low-level line (such as a CAN L communication line) and a high-level line (such as a CAN H communication line), and a number tube identifier can be arranged at each end of each line (that is, four connection ends). The four number tubes recording the number tube identifiers can be arranged at a position 10 mm away from the connection end. In addition, the number tube identifier can also be arranged at other positions, which are not limited by the present application.

[0069] Moreover, referring to FIG. (b) of Figure 4 , one end (for example, the left end) of the wire harness L4 can be connected to a plug and a pin (the plug and the pin can constitute a connector), so that the wire harness L4 can be connected to the interface P4 through the connector. The connector can be any model of plug and pin. For example, the plug can be the plug 301 of model HX25002-2Y shown in Figure 3B , and the pin can be the pin 302 of model HX25002-PT shown in Figure 3B . In addition, the two lines at the other end (for example, the right end) of the wire harness L4 can be respectively connected to the pin 18 and the pin 19 of the plug-in 303, so that the wire harness L4 can be connected to the CMU board 104 by inserting the plug-in 303 into the CMU board 104.

[0070] Thus, referring to Figure 2 , by connecting the wire harness L4 between the interface P4 of the power adapter board 102 and the CMU board 104, the collected battery pack data can be transmitted to the CMU board 104 through the wire harness L4, and then transmitted to the display screen 105 for display by the CMU board 104.

[0071] Next, the connection mode between the display screen 105 and the CMU board 104 will be described with reference to the battery pack detection device shown in Figure 2 . Specifically, referring to FIG. (b) of Figure 2As shown, the display screen 105 and the CMU board 104 can be connected via a wiring harness L6, and the wiring harness L6 can be a communication line. Thus, the CMU board 104 can transmit battery pack data to the display screen 105 for display via the wiring harness L6.

[0072] The wiring harness L6 between the display screen 105 and the CMU board 104 can be any type of communication cable, and the length of the wiring harness L6 can be any length. For example, refer to... Figure 4 As shown in Figure (c), the wiring harness L6 between the CMU board 104 and the display screen 105 can be a 485 communication line, meaning that the CMU board 104 transmits data to the display screen 105 via the 485 communication line. Furthermore, if the length of the 485 communication line is 100mm, the wiring harness tolerance can be -0mm to +10mm, meaning the shortest length can be 100mm and the longest can be 110mm. Similarly, the length of the wiring harness L6 between the CMU board 104 and the display screen 105 can also be any other arbitrary length, and the wiring harness tolerance can also be any value; this application does not impose any limitations on these aspects.

[0073] Furthermore, a number tube identifier can be installed on the wiring harness L6 between the CMU board 104 and the display screen 105. For example, refer to... Figure 4 As shown in Figure (c), the wire harness L6 can include low-level lines and high-level lines, and each of the two ends of each line (i.e., the four connection ends) can be respectively provided with a number tube identifier. The four number tubes with the number tube identifiers can be respectively set at a position 10mm away from the connection end. Alternatively, the number tube identifiers can be set at other positions, which is not limited in this application.

[0074] Furthermore, refer to Figure 4 As shown in Figure (c), one end of the wire harness L6 (e.g., the left end) can be directly stripped and connected to the display screen 105. The stripped length should be less than the distance between the number tube marking and the connection end, and the stripped length can be any length. For example, if the number tube marking is 10mm from the connection end, the stripped length can be any length less than 10mm, such as 5mm, 7mm, etc., and this application does not impose any limitation on this. Furthermore, the two wires at the other end of the wire harness L6 (e.g., the right end) can be connected to pins 15 and 5 of the plug-in 303, respectively. By plugging the plug-in 303 into the CMU board 104, the wire harness L6 can be connected to the CMU board 104.

[0075] Thus, for reference Figure 2 As shown, by connecting the wiring harness L6 between the CMU board 104 and the display screen 105, the battery pack data collected by the CMU board 104 can be transmitted to the display screen 105 for display through the wiring harness L6.

[0076] Next, continue to refer toFigure 2 The battery pack detection device shown is described in terms of the connection mode between the interface P5 and the battery pack interface 103. Specifically, referring to Figure 2 As shown, the interface P5 and the battery pack 103 can be connected through a wire harness L5, and the wire harness L5 can include power supply lines and communication lines, so that the interface P5 can supply power to the battery pack interface 103, and also so that the battery pack interface 103 can transmit data with the interface P5 through the wire harness L5.

[0077] As shown, the interface P5 and the battery pack interface 103 can be connected through a wire harness L5, and the wire harness L5 can include power supply lines and communication lines, so that the interface P5 can supply power to the battery pack interface 103, and also so that the battery pack interface 103 can transmit data with the interface P5 through the wire harness L5. Figure 5 As shown, the wire harness L5 between the interface P5 and the battery pack interface 103 can include 24V power supply lines (including low-voltage lines and high-voltage lines) and CAN communication lines (including low-level lines and high-level lines, and both are twisted pairs). Wherein, the wire length and the wire harness tolerance of the wire harness L5 can be set arbitrarily, for example, if the wire length is 2500mm, the wire harness tolerance can be -0mm~+10mm, that is, the shortest can be 2500mm, the longest can be 2510mm, the present application does not make limitation to this. In addition, a number tube identification can be provided on the wire harness L5 between the interface P5 and the battery pack interface 103. For example, referring to Figure 5 As shown, the 4 number tubes with number tube identification can be respectively provided at a position 10mm away from the connection end. In addition, the number tube identification can also be provided at other positions, which is not limited by the present application.

[0078] As shown, the wire harness L5 between the interface P5 and the battery pack interface 103 can include 24V power supply lines (including low-voltage lines and high-voltage lines) and CAN communication lines (including low-level lines and high-level lines, and both are twisted pairs). Wherein, the wire length and the wire harness tolerance of the wire harness L5 can be set arbitrarily, for example, if the wire length is 2500mm, the wire harness tolerance can be -0mm~+10mm, that is, the shortest can be 2500mm, the longest can be 2510mm, the present application does not make limitation to this. In addition, a number tube identification can be provided on the wire harness L5 between the interface P5 and the battery pack interface 103. For example, referring to Figure 5 As shown, one end (such as the left end) of the wire harness L5 is connected with the connector C3, and the plug model of the connector C3 can be HW0550X00000G. When the connector C3 is inserted into the interface P5, it means that the wire harness L5 is connected to the interface P5. In addition, the other end (such as the right end) of the wire harness L5 can be connected with the battery pack interface 103. Wherein, the battery pack interface 103 can include the interface C1 and the interface C2, and the plug model of the interface C1 can be ATC16-5SN_10-754548-516_PA10 and the pin model can be C10-613361-116, and the plug model of the interface C2 can be NC010-07-89-Y0L-C005 and the pin model can be P10-12S-JC01.

[0079] Specifically, referring to Figure 5As shown, the high voltage line (line number 24V+ power supply line) is red (R) in color, 0.5 mm in diameter (it can also be any other diameter, such as 1 mm, etc.), and is connected to pin A of interface C1 and pin 1 of interface C2 at the same time. The low voltage line (line number 24V- power supply line) is black (B) in color, 0.5 mm in diameter (it can also be any other diameter, such as 1.1 mm, etc.), and is connected to pin B of interface C1 and pin 2 of interface C2 at the same time. The low level line (line number CAN_L communication line) is blue (L) in color, 0.5 mm in diameter (it can also be any other diameter, such as 0.4 mm, etc.), and is connected to pin C of interface C1 and pin 3 of interface C2 at the same time. The high level line (line number CAN_H communication line) is green (G) in color, 0.5 mm in diameter (it can also be any other diameter, such as 0.7 mm, etc.), and is connected to pin D of interface C1 and pin 4 of interface C2 at the same time.

[0080] Thus, referring to Figure 2 As shown, after the interface P5 is connected to the battery pack interface 103 through the wire harness L5, if the battery pack interface 103 is connected to the communication interface of the battery pack, the characteristic parameters of the battery pack can be monitored by the battery pack detection device shown in Figure 2 As shown, after the interface P5 is connected to the battery pack interface 103 through the wire harness L5, if the battery pack interface 103 is connected to the communication interface of the battery pack, the characteristic parameters of the battery pack can be monitored by the battery pack detection device shown in

[0081] Thus, by connecting the power supply 101 and the interface P1 of the power supply adapter board 102 through the wire harness L1, connecting the interface P2 of the power supply adapter board 102 and the display screen 105 through the wire harness L2, connecting the interface P3 of the power supply adapter board 102 and the CMU board 104 through the wire harness L3, connecting the interface P4 of the power supply adapter board 102 and the CMU board 104 through the wire harness L4, connecting the interface P5 of the power supply adapter board 102 and the battery pack interface 103 through the wire harness L5, and connecting the CMU board 104 and the display screen 105 through the wire harness L6 as mentioned in the above embodiments, the battery pack detection device can be obtained.

[0082] Wherein, by connecting the power supply 101 and the interface P1 of the power supply adapter board 102 through the wire harness L1, connecting the interface P2 of the power supply adapter board 102 and the display screen 105 through the wire harness L2, connecting the interface P3 of the power supply adapter board 102 and the CMU board 104 through the wire harness L3, connecting the interface P4 of the power supply adapter board 102 and the CMU board 104 through the wire harness L4, connecting the interface P5 of the power supply adapter board 102 and the battery pack interface 103 through the wire harness L5, and connecting the CMU board 104 and the display screen 105 through the wire harness L6 as mentioned in the above embodiments, the battery pack detection device can be obtained. Figure 2When the battery pack detection device detects the performance parameters of the battery pack, the battery pack interface 103 of the battery pack detection device can be connected to the battery management system (BMS) of the battery pack. Next, the CMU board 104 can read the voltage information, temperature information, residual capacity, and health degree values of the battery pack from the BMS of the battery pack, and transmit the read characteristic parameters to the display screen 105 for display. When the CMU board 104 reads the characteristic parameters of the battery pack, the data can be transmitted from the battery pack to the CMU board 104 through the battery pack interface 103, the interface P5, and the interface P4. In addition, when the CMU board 104 determines that the characteristic parameters of the battery pack are in an abnormal state, such as high voltage, low voltage, high temperature, low temperature, voltage anomaly, communication anomaly, etc., the display screen 105 can be controlled to display warning information.

[0083] In addition, if the power consumption of the CMU board 104 in the battery pack detection device is x1 mA, the power consumption of the display screen 105 is x2 mA, and the power consumption of the battery management unit (BMU) in the battery management system of the battery pack is x3 mA, the total power consumption of the battery pack detection device can be (x1+x2+x3) mA. In addition, if the power supply 101 is a battery with a capacity of W milliampere hours (mAh), the battery pack detection device can work for W ÷ (x1+x2+x3) hours.

[0084] For example, if the power consumption of the CMU board 104 in the battery pack detection device is 200 mA, the power consumption of the display screen 105 is 200 mA, and the power consumption of the BMU board in the battery management system of the battery pack is 100 mA, the total power consumption of the battery pack detection device can be 500 mA. In addition, if the power supply 101 is a battery with a capacity of 3000 milliampere hours (mAh), the battery pack detection device can work for 3000 ÷ (200+200+100) hours, that is, 6 hours. Therefore, the battery pack detection device can work for 6 hours during the day and then be charged at night.

[0085] In this way, the battery pack detection device provided by the present application can enable users to conveniently test the performance parameters of the battery pack at any time. For example, when the battery pack leaves the production line, or when the battery pack has been placed in the warehouse for a long time, or when the battery pack needs to be repaired after sale, the user can detect the performance parameters of the battery pack through the battery pack detection device provided by the present application, so as to determine whether the battery pack can work normally.

[0086] Furthermore, in some embodiments, within the power adapter board 102, the circuit paths containing interface P2, interface P3, and interface P5 can be different branch paths. Specifically, if the circuit path containing interface P2 includes a first power supply circuit and interface P2, then the first end of the first power supply circuit is connected to interface P1, and the second end of the first power supply circuit is connected to interface P2, thereby enabling interface P1, the circuit elements in the first power supply circuit, and interface P2 to form a path. Alternatively, if the circuit path containing interface P3 includes a second power supply circuit and interface P3, then the first end of the second power supply circuit is connected to interface P1, and the second end of the second power supply circuit is connected to interface P3, thereby enabling interface P1, the circuit elements in the second power supply circuit, and interface P3 to form a path. Or, if the circuit path containing interface P5 includes a third power supply circuit and interface P5, then the first end of the third power supply circuit is connected to interface P1, and the second end of the third power supply circuit is connected to interface P5, thereby enabling interface P1, the circuit elements in the third power supply circuit, and interface P5 to form a path.

[0087] Furthermore, in some other embodiments, the power adapter board 102 may also include a switch (such as the aforementioned switch S1) to control the circuit path formed by interface P1 and the first power supply circuit, the circuit path formed by interface P2 and the second power supply circuit, and the circuit path formed by interface P5 and the third power supply circuit. Specifically, this can be combined with... Figure 6 The circuit block diagram shown describes the internal circuit framework of the power adapter board 102 in the battery pack testing device.

[0088] Among them, Figure 6 In the circuit framework of the power adapter board 102 shown, the first end of switch S1 is connected to interface P1, and the second end of switch S1 is connected to the first end of the first power supply circuit, the first end of the second power supply circuit, and the first end of the third power supply circuit, respectively. The second end of the first power supply circuit is connected to interface P2; the second end of the second power supply circuit is connected to interface P3; and the second end of the third power supply circuit is connected to interface P5.

[0089] It is understood that in the entire battery pack testing device, interface P1 is connected to power supply 101. Therefore, when power supply 101 supplies power to interface P1 and switch S1 is closed, the first power supply circuit, the second power supply circuit, and the third power supply circuit can enter the conducting state, thereby enabling interface P2, interface P3, and interface P5 to enter the conducting state.

[0090] Furthermore, in Figure 6In the circuit framework of the power adapter board 102 shown, interface P5 is also connected to interface P4. It can be seen that a data transmission channel can be formed between the battery pack interface 103, interface P5, interface P4, and CMU board 104, thereby enabling battery pack data to be transmitted from the battery pack interface 103 to the CMU board 104 via interfaces P5 and P4.

[0091] In this way, the power adapter board 102 can be designed. By connecting the other modules to the interfaces in the power adapter board 102, the battery pack testing device mentioned in this application can be obtained.

[0092] The following is combined Figure 7 The circuit diagram shown provides a detailed description of the internal circuit structure of the power adapter board 102.

[0093] exist Figure 7 In this configuration, pin 1 of interface P1 (as an example of the first pin of the first interface) is connected to the first terminal of capacitor C1 (as an example of the first capacitor), the first terminal of capacitor C2 (as an example of the second capacitor), and the first terminal of switch S1 (as an example of the first switch). Pin 2 of interface P1 (as an example of the second pin of the first interface) is grounded, the second terminal of capacitor C1 is grounded, and the second terminal of capacitor C2 is grounded. The parallel connection of capacitors C1 and C2 improves the filtering effect and reduces the impedance of the internal circuitry of the power adapter board 102.

[0094] Furthermore, the second terminal of switch S1 is connected to the first terminal of the first power supply circuit, the first terminal of the second power supply circuit, and the first terminal of the third power supply circuit, respectively. The first power supply circuit further includes a resistance wire R11 (as an example of a first resistance wire), an inductor L11 (as an example of a first inductor), a diode T11 (as an example of a first diode), a diode T12 (as an example of a second diode), a capacitor C11 (as an example of a third capacitor), and a capacitor C12 (as an example of a fourth capacitor).

[0095] In this configuration, the first end of resistance wire R11 is connected to the second end of switch S1, the second end of resistance wire R11 is connected to the first end of inductor L11, and the second end of inductor L11 is connected to the first end of diode T11. The second end of diode T11 is connected to pin 1 of interface P2 (as an example of the first pin of the second interface), the first end of diode T12, the first end of capacitor C11, and the first end of capacitor C12. Pin 2 of interface P2 (as an example of the second pin of the second interface) is grounded, the second end of diode T12 is grounded, the second end of capacitor C11 is grounded, and the second end of capacitor C12 is grounded.

[0096] The resistance wire R11 can be burnt out when the voltage is too high to protect the circuit; the one-way conductivity of the diode T11 can prevent the circuit from being reversed, so that the current can only flow from the power supply 101 to the interface P2, and cannot flow from the interface P2 to the power supply 101; the parallel connection of the capacitor C11 and the capacitor C12 can improve the filtering effect and reduce the impedance of the internal circuit of the power supply adapter board 102. In addition, the diode T11 can be a Schottky diode, and the diode T12 can be a transient voltage suppressor (TVS) diode.

[0097] In this way, when the switch S1 is turned on, the first power supply circuit can be turned on, so that the interface P2 can be turned on, and then the display screen 105 connected to the interface P2 can be powered.

[0098] Next, continuing to refer to Figure 7 As shown in FIG. 8, the second power supply circuit further includes a resistance wire R21 (as an example of a second resistance wire), an inductor L21 (as an example of a second inductor), a diode T21 (as an example of a third diode), a diode T22 (as an example of a fourth diode), a capacitor C21 (as an example of a fifth capacitor), and a capacitor C22 (as an example of a sixth capacitor).

[0099] The first end of the resistance wire R21 is connected to the second end of the switch S1, the second end of the resistance wire R21 is connected to the first end of the inductor L21, and the second end of the inductor L21 is connected to the first end of the diode T21. The second end of the diode T21 is connected to the pin 1 (as an example of a first pin of a third interface) of the interface P3, the first end of the diode T22, the first end of the capacitor C21, and the first end of the capacitor C22, respectively. The pin 2 (as an example of a second pin of the third interface) of the interface P3 is grounded, the second end of the diode T22 is grounded, the second end of the capacitor C21 is grounded, and the second end of the capacitor C22 is grounded.

[0100] The resistance wire R21 can be burnt out when the voltage is too high to protect the circuit; the one-way conductivity of the diode T21 can prevent the circuit from being reversed, so that the current can only flow from the power supply 101 to the interface P3, and cannot flow from the interface P3 to the power supply 101; the parallel connection of the capacitor C21 and the capacitor C22 can improve the filtering effect and reduce the impedance of the internal circuit of the power supply adapter board 102. In addition, the diode T21 can be a Schottky diode, and the diode T22 can be a TVS diode.

[0101] In this way, when the switch S1 is turned on, the second power supply circuit can be turned on, so that the interface P3 can be turned on, and then the CMU board 104 connected to the interface P3 can be powered.

[0102] Next, with reference to Figure 7 As shown, the third power supply circuit further includes a resistance wire R31 (as an example of the third resistance wire), an inductor L31 (as an example of the third inductor), a diode T31 (as an example of the fifth diode), a diode T32 (as an example of the sixth diode), a capacitor C31 (as an example of the seventh capacitor), and a capacitor C32 (as an example of the eighth capacitor).

[0103] The first end of the resistance wire R31 is connected to the second end of the switch S1, the second end of the resistance wire R31 is connected to the first end of the inductor L31, and the second end of the inductor L31 is connected to the first end of the diode T31. The second end of the diode T31 is connected to the pin 1 (as an example of the first pin of the fifth interface) of the interface P5, the first end of the diode T32, the first end of the capacitor C31, and the first end of the capacitor C32, respectively. The pin 2 (as an example of the second pin of the fifth interface) of the interface P5 is grounded, the second end of the diode T32 is grounded, the second end of the capacitor C31 is grounded, and the second end of the capacitor C32 is grounded.

[0104] The resistance wire R31 can be burned out when the voltage is too high to protect the circuit; the one-way conductivity of the diode T31 can prevent the reverse direction of the current, so that the current can only flow from the power supply 101 to the interface P5, and cannot flow from the interface P5 to the power supply 101; the parallel connection of the capacitor C31 and the capacitor C32 can improve the filtering effect and reduce the impedance of the internal circuit of the power supply adapter plate 102. Moreover, the diode T31 can be a Schottky diode, and the diode T32 can be a TVS diode.

[0105] In this way, when the switch S1 is turned on, the third power supply circuit can be turned on, so that the interface P5 can be turned on, and thus the battery pack interface 103 connected to the interface P5 can be powered.

[0106] In addition, with reference to Figure 7 As shown, the pin 3 (as an example of the third pin of the fifth interface) of the interface P5 is connected to the pin 2 (as an example of the second pin of the fourth interface) of the interface P4, and the pin 4 (as an example of the fourth pin of the fifth interface) of the interface P5 is connected to the pin 1 (as an example of the first pin of the fourth interface) of the interface P4. In this way, data transmission can be performed between the interface P4 and the interface P5. That is, a data transmission channel can be formed between the battery pack interface 103, the interface P5, the interface P4, and the CMU board 104, so that data transmission can be performed, and thus the battery pack data can be transmitted from the battery pack interface 103 to the CMU board 104 via the interface P5 and the interface P4.

[0107] In this way, the power adapter 102 can be designed, and by connecting each module to the interface in the power adapter 102, the battery pack detection device mentioned in the present application can be obtained.

[0108] It can be understood that by using the battery pack detection device provided in the present application, the battery pack interface of the battery pack detection device can be connected to the communication interface of the battery pack, and then the switch S1 is opened, so that the temperature, voltage, remaining capacity and other characteristic parameters of the battery pack can be detected. In this way, the user can conveniently test the performance parameters of the battery pack at any time. For example, when the battery pack leaves the production line, or when the battery pack has been placed in the warehouse for a long time, or when the battery pack needs to be repaired after sale, the user can detect the performance parameters of the battery pack by using the battery pack detection device provided in the present application, so as to determine whether the battery pack can work normally.

[0109] It can be understood that some structural or method features can be shown in a specific arrangement and / or order in the drawings. However, it should be understood that such specific arrangement and / or order can not be required. Rather, in some embodiments, these features can be arranged in a manner different from that shown in the illustrative drawings. In addition, the inclusion of structural or method features in a particular figure does not imply that such features are required in all embodiments, and in some embodiments, these features can not be included or can be combined with other features.

[0110] It should be noted that each unit / module mentioned in the embodiments of the present application is a logical unit / module, and in the physical aspect, one logical unit / module can be one physical unit / module, or a part of one physical unit / module, or a combination of multiple physical units / modules, and the physical implementation of the logical unit / module itself is not the most important, and the combination of the functions implemented by the logical unit / module is the key to solve the technical problems proposed in the present application. In addition, in order to highlight the innovative part of the present application, the above-mentioned embodiments of the present application do not introduce the units / modules which are not closely related to solving the technical problems proposed in the present application, which does not mean that the above-mentioned embodiments do not have other units / modules.

[0111] It is to be understood that the phrases such as "first" and "second", and the like, used herein are used only to distinguish one from another entity or action, and do not require or imply these entities or actions to be in any particular sequence or order. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0112] While the application has been illustrated and described in relation to certain exemplary embodiments thereof, it will be appreciated that various changes in form and detail can be made therein without departing from the scope of the application.

Claims

1. A battery pack testing device, characterized in that, The battery pack data acquisition board, the display screen, and the battery pack interface are connected to the power supply adapter board. The display screen is connected to the battery pack data acquisition board. The power supply adapter board includes a first interface, a second interface, a third interface, a fourth interface, and a fifth interface. The power supply adapter board is connected to the power supply through the first interface, to the display screen through the second interface, to the battery pack interface through the fifth interface, and to the battery pack data acquisition board through the third interface and the fourth interface. The first interface of the power supply adapter board is connected to the power supply through a power supply line.

2. The apparatus of claim 1, wherein, The second interface of the power supply adapter board is connected to the display screen through a power supply line. The third interface of the power supply adapter board is connected to the battery pack data acquisition board through a power supply line. The fourth interface of the power supply adapter board is connected to the battery pack data acquisition board through a communication line. The fifth interface of the power supply adapter board is connected to the battery pack interface through a power supply line and a communication line. The fourth interface is connected to the fifth interface through internal wiring of the power supply adapter board. The power supply adapter board includes a first power supply circuit, a second power supply circuit, and a third power supply circuit.

3. The apparatus of claim 2, wherein, The first end of the first power supply circuit is connected to the first interface, and the second end of the first power supply circuit is connected to the second interface. The first end of the second power supply circuit is connected to the first interface, and the second end of the second power supply circuit is connected to the third interface.

4. The apparatus of claim 3, wherein, The first end of the third power supply circuit is connected to the first interface, and the second end of the third power supply circuit is connected to the fifth interface. The power supply adapter board further includes a first switch. The first end of the first switch is connected to the first interface, and the second end of the first switch is connected to the first end of the first power supply circuit, the first end of the second power supply circuit, and the first end of the third power supply circuit. The power supply adapter board further includes a first capacitor and a second capacitor.

5. The apparatus of claim 4, wherein, The first pin of the first interface is connected to the first end of the first capacitor, the first end of the second capacitor, and the first end of the first switch. The second pin of the first interface is grounded.

6. The apparatus of claim 5, wherein, The second end of the first capacitor is grounded. The second end of the second capacitor is grounded. The first power supply circuit includes a first resistor, a first inductor, a first diode, a second diode, a third capacitor, and a fourth capacitor. The first end of the first resistor is connected to the second end of the first switch, and the second end of the first resistor is connected to the first end of the first inductor. The second end of the first inductor is connected to the first end of the first diode.

7. The apparatus of claim 6, wherein, The second end of the first diode is connected to the first pin of the second interface, the first end of the second diode, the first end of the third capacitor, and the first end of the fourth capacitor. ​ ​ ​ The second pin of the second interface is grounded, the second end of the second diode is grounded, and the second end of the third capacitor and the second end of the fourth capacitor are grounded.

8. The apparatus of claim 7, wherein, The second power supply circuit comprises a second resistance wire, a second inductor, a third diode, a fourth diode, a fifth capacitor, and a sixth capacitor; wherein, The first end of the second resistance wire is connected to the second end of the first switch, and the second end of the second resistance wire is connected to the first end of the second inductor; The second end of the second inductor is connected to the first end of the third diode; The second end of the third diode is connected to the first pin of the third interface, the first end of the fourth diode, the first end of the fifth capacitor, and the first end of the sixth capacitor, respectively; The second pin of the third interface is grounded, the second end of the fourth diode is grounded, and the second end of the fifth capacitor and the second end of the sixth capacitor are grounded.

9. The apparatus of claim 8, wherein, The third power supply circuit comprises a third resistance wire, a third inductor, a fifth diode, a sixth diode, a seventh capacitor, and an eighth capacitor; wherein, The first end of the third resistance wire is connected to the second end of the first switch, and the second end of the third resistance wire is connected to the first end of the third inductor; The second end of the third inductor is connected to the first end of the fifth diode; The second end of the fifth diode is connected to the first pin of the fifth interface, the first end of the sixth diode, the first end of the seventh capacitor, and the first end of the eighth capacitor, respectively; The second pin of the fifth interface is grounded, the second end of the sixth diode is grounded, and the second end of the seventh capacitor and the second end of the eighth capacitor are grounded.

10. The apparatus of claim 9, wherein, Further comprising: The third pin of the fifth interface is connected to the second pin of the fourth interface, and the fourth pin of the fifth interface is connected to the first pin of the fourth interface.

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