Battery pack and vehicle

Abstract

The utility model discloses a battery pack and a vehicle, the battery pack comprises a box body, a battery module and a controller of at least one vehicle-mounted high-voltage part, and the battery module is located in the box body; the original controllers of the vehicle-mounted high-voltage parts and the original controllers of at least one vehicle-mounted high-voltage part are integrated in the box body, the original controllers are connected with the corresponding vehicle-mounted high-voltage parts so as to control the vehicle-mounted high-voltage parts to work, and each original controller is further connected with the battery module and used for controlling the power supply state between the battery module and the vehicle-mounted high-voltage parts. The controller of the vehicle-mounted high-voltage component and the battery module are integrated in the box body, and the circuit of the original controller of each vehicle-mounted high-voltage component is reused, so that the original function of the battery pack can be realized, the number of main positive and main negative switching devices in the battery pack is reduced, and the production cost of a vehicle can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a battery pack and a vehicle. Background Art

[0002] During the production process of electric vehicles, the cost of the power battery system accounts for a large proportion of the total vehicle cost. Due to technical constraints, the cost of the power battery system has remained high, making the cost of electric vehicles generally higher than that of fuel vehicles of the same grade. Therefore, how to effectively reduce the cost of the power battery system has always been the focus of major automobile manufacturers.

[0003] In the prior art, the battery modules in the battery pack of electric vehicles are connected to the various electric control modules of the vehicle through distributed high-voltage wires. However, since the various electric control modules are relatively dispersedly arranged in the front cabin or the lower part of the rear cabin luggage compartment of the vehicle, the high-voltage wires connecting the battery modules and the electric control modules or between the various electric control modules are relatively long. In addition, due to the volume of the shell of each electric control module, this arrangement and connection method not only occupies the space of the front cabin or the rear cabin, causing a waste of space, but also the excessively long high-voltage wires also virtually increase the development and maintenance costs of the entire vehicle. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose a battery pack that integrates the controller of the vehicle-mounted high-voltage components and the battery module in a box body, and reuses the circuits of the original controllers of the vehicle-mounted high-voltage components, thereby ensuring that the battery pack can achieve the original function and reducing the number of main positive and negative switch devices in the battery pack, which can effectively reduce the vehicle production cost.

[0005] Another object of the present invention is to provide a vehicle.

[0006] In order to achieve the above-mentioned purpose, the battery pack proposed in the embodiment of the first aspect of the utility model includes: a box body; a battery module, the battery module is located in the box body; and at least one original controller of a vehicle-mounted high-voltage component, at least one original controller is integrated in the box body, the original controller is connected to the corresponding vehicle-mounted high-voltage component to control the operation of the vehicle-mounted high-voltage component, and each original controller is also connected to the battery module for controlling the power supply status between the battery module and the vehicle-mounted high-voltage component.

[0007] According to the battery pack proposed in the embodiment of the utility model, the original controller of at least one vehicle-mounted high-voltage component is set between the battery module and the vehicle-mounted high-voltage component. By controlling each original controller, it can be ensured that the original function of the vehicle-mounted high-voltage component can be realized, and each original controller can also replace the original battery module total positive and total negative switch device to control the input and output of the battery pack, thereby realizing the control of the power supply state between the battery module and the vehicle-mounted high-voltage component. Thus, by reusing the circuit of the original controller of each vehicle-mounted high-voltage component, it is ensured that the battery module and the vehicle-mounted high-voltage component can realize the original function. In addition, the battery module and the original controllers of each vehicle-mounted high-voltage component are integrated into a box body, which reduces the number of main positive and negative switch devices in the battery pack, greatly reduces the use of connecting wire harnesses and copper bars between the battery module and the original controllers of each vehicle-mounted high-voltage component, and further reduces the manufacturing cost of the battery system.

[0008] In some embodiments of the present invention, the battery pack further includes: a first switch, the first switch is located in the box body, the first switch is connected to the positive electrode side of the battery module, and is used to control the charging and discharging of the battery module.

[0009] In some embodiments of the present invention, the battery pack further includes: a second switch, the second switch is located in the box body, the second switch is connected to the negative electrode side of the battery module, and is used to control the charging and discharging of the battery module.

[0010] In some embodiments of the present invention, the battery module includes a plurality of battery packs connected in series; the battery pack also includes a third switch, the third switch is located in the box body, the third switch is connected between two of the battery packs, and is used to control the charging and discharging of the battery module.

[0011] In some embodiments of the present invention, the battery pack further includes: a metal bar, wherein the metal bar is disposed on the box body, and the controller of the at least one vehicle-mounted high-voltage component is connected to the corresponding vehicle-mounted high-voltage component through the metal bar.

[0012] In some embodiments of the present invention, the original controller of at least one vehicle-mounted high-voltage component includes: an on-board charger controller, a first end of the on-board charger controller is connected to the battery module, and a second end of the on-board charger controller is suitable for connecting to a vehicle-mounted AC charging port; the on-board charger controller includes a first switch tube, and the first switch tube is used to control the charging status of the battery module by the on-board AC charging port.

[0013] In some embodiments of the utility model, the original controller of at least one vehicle-mounted high-voltage component includes: a drive motor controller, a first end of the drive motor controller is connected to the battery module, and a second end of the drive motor controller is suitable for connecting to a vehicle-mounted drive motor; the drive motor controller includes a second switch tube, and the second switch tube is used to control the charging and discharging state of the battery module to the vehicle-mounted drive motor.

[0014] In some embodiments of the utility model, the original controller of at least one vehicle-mounted high-voltage component includes: a vehicle-mounted electric heating component controller, a first end of the vehicle-mounted electric heating component controller is connected to the battery module, and a second end of the vehicle-mounted electric heating component controller is suitable for connecting to the vehicle-mounted electric heating component; the vehicle-mounted electric heating component controller includes a third switch tube, and the third switch tube is used to control the power supply status of the battery module to the vehicle-mounted electric heating component.

[0015] In some embodiments of the utility model, the original controller of at least one vehicle-mounted high-voltage component includes: a step-down circuit, a first end of the step-down circuit is connected to the battery module, and a second end of the step-down circuit is suitable for being connected to a vehicle-mounted battery; the step-down circuit includes a fourth switch tube, and the fourth switch tube is used to control the power supply status of the battery module to the vehicle-mounted battery.

[0016] In order to achieve the above-mentioned objectives, a second aspect of the present invention proposes a vehicle, comprising: a battery pack as described in any one of the above embodiments, the battery pack integrating at least one original controller of a vehicle-mounted high-voltage component; and at least one vehicle-mounted high-voltage component, at least one of the vehicle-mounted high-voltage components being correspondingly connected to the original controller of the at least one vehicle-mounted high-voltage component.

[0017] According to the vehicle inscribed in the embodiment of the utility model, the original controllers of various on-board high-voltage components are integrated in the battery pack. By reusing the circuits of the original controllers of various on-board high-voltage components, the number of main positive and negative switch devices in the battery pack is reduced while ensuring that the battery pack and the on-board high-voltage components can both achieve their original functions, which can effectively reduce the production cost and maintenance cost of the vehicle.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1is a block diagram of a battery pack according to an embodiment of the utility model;

[0021] Figure 2 is a schematic diagram of a battery pack according to an embodiment of the utility model;

[0022] Figure 3 is a schematic diagram of a battery pack according to another embodiment of the utility model;

[0023] Figure 4 is a schematic diagram of a battery pack according to another embodiment of the utility model;

[0024] Figure 5 is a schematic diagram of a battery pack according to another embodiment of the utility model;

[0025] Figure 6 is a schematic diagram of a battery pack according to another embodiment of the utility model;

[0026] Figure 7 The block diagram of a vehicle according to an embodiment of the present utility model.

[0027] Reference numerals:

[0028] Battery pack 10, vehicle-mounted high-voltage components 20, vehicle-mounted AC charging port U;

[0029] Box body 1, battery module 2, original controller of vehicle-mounted high-voltage components 3;

[0030] On-board charger controller 31, drive motor controller 32, on-board electric heating component controller 33, step-down circuit 34;

[0031] On-board drive motor 210, on-board heating component 220, on-board battery 230;

[0032] PTC device 221, compressor 222;

[0033] The first switch K1, the second switch K2, the third switch K3, the first sub-switch tube V1, the second sub-switch tube V2, the third sub-switch tube V3, the fourth sub-switch tube V4, the fifth sub-switch tube V5, the sixth sub-switch tube V6, the seventh sub-switch tube V7, the eighth sub-switch tube V8, the ninth sub-switch tube V9, the tenth sub-switch tube V10, the eleventh sub-switch tube V11, the twelfth sub-switch tube V12, the thirteenth sub-switch tube V13, the fourteenth sub-switch tube V14, the fifteenth sub-switch tube V15, the sixteenth sub-switch tube V16, the seventeenth sub-switch tube V17, the eighteenth sub-switch tube V18, the nineteenth sub-switch tube V19, the twentieth sub-switch tube V20, the twenty-first sub-switch tube V21, the twenty-second sub-switch tube V 22. the twenty-third sub-switch tube V23, the twenty-fourth sub-switch tube V24, the twenty-fifth sub-switch tube V25, the twenty-sixth sub-switch tube V26, the twenty-seventh sub-switch tube V27, the twenty-eighth sub-switch tube V28, the twenty-ninth sub-switch tube V29, the thirtieth sub-switch tube V30, the thirty-first sub-switch tube V31, the thirty-second sub-switch tube V32, the first inductor L1, the second inductor L2, the third inductor L3, the fourth inductor L4, the fifth inductor L5, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fifth capacitor C5, the fourth capacitor C4, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, the first transformer T1, the second transformer T2, and the voltage-stabilizing diode D. DETAILED DESCRIPTION

[0034] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0035] In the prior art, the cost of the power battery system in the production process of electric vehicles has remained high. Due to the pressure of cost and available space, many companies have launched integrated solutions to reduce the cost of the entire vehicle and increase available space. For example, an existing solution discloses integrating the motor and the electronic control inside the battery pack to achieve the purpose of saving space and reducing costs. The solution provides an integrated battery pack, and integrates the energy storage module, the power module and the control module in the integrated battery pack. Among them, the energy storage module is used to store electrical energy based on the external power supply signal, and convert the electrical energy to obtain the power supply signal. The power module is connected to the energy storage module, and is used to convert the power supply signal into a mechanical energy signal, and input the mechanical energy signal to the external drive device to drive the external drive device to operate; the control module is connected to the energy storage module and the power module, and is used to issue control instructions, adjust the amplitude of the power supply signal and the amplitude of the mechanical signal, and then adjust the operating state of the external drive device to drive the vehicle to operate. However, this solution only integrates the motor and electronic control inside the battery pack to reduce the cost of using wiring harnesses and copper plates. Therefore, the entire battery pack of this solution is still relatively thick and takes up a lot of space on the vehicle. It only integrates the power module, energy storage module and control module in the power pack, reducing the connecting wiring harnesses and copper plates between the battery pack, motor and electronic control. It only physically integrates the high-voltage components, and cannot reduce the number of switching devices between the high-voltage components. The cost of integration and subsequent maintenance is still very high.

[0036] It can be seen that the prior art only physically integrates high-voltage components such as batteries and motor controllers, and the control between the components still requires separate switching devices to achieve, and the number, control and cost of switches are still very high. Based on this, the utility model proposes a battery pack, which integrates the original controllers of various on-board high-voltage components with the battery module in a box body, reuses the circuits of the original controllers of various on-board high-voltage components and adjusts the control algorithms, which not only ensures that the battery pack can achieve the original functions, but also reduces the number of main positive and negative switch devices in the battery pack, further reducing costs. Refer to the following Figure 1-Figure 6 A battery pack according to an embodiment of the present invention is described.

[0037] In some embodiments of the present invention, Figure 1 , which is a block diagram of a battery pack according to an embodiment of the present invention, wherein the battery pack 10 includes a box body 1, a battery module 2 and an original controller 3 of at least one vehicle-mounted high-voltage component.

[0038] The battery module 2 is located in the box body 1. Specifically, Figure 2 To understand the battery pack 10 of the present utility model, Figure 2This is a schematic diagram of a battery pack according to an embodiment of the utility model, wherein the battery module 2 is arranged between the positive terminal of the vehicle-mounted AC charging port U and the negative terminal of the AC power supply interface. When the battery pack 10 is connected to the external vehicle-mounted AC charging port U, the battery module 2 is charged by an external power supply.

[0039] Furthermore, the battery module 2 may include N battery packs, which are connected in series or in parallel, where N≥2. For example, the value of N may be 2, 3, 4, 5, etc., and the series and parallel connection of multiple battery packs may be set according to circuit design requirements, which is not specifically limited here.

[0040] The following description is based on an example in which the battery module 2 includes two battery packs and the two battery packs are connected in series. Figure 2 As shown, the battery module 2 may include a first battery pack 21 and a second battery pack 22, wherein the positive terminal of the first battery pack 21 is suitable for connection with the positive terminal of the vehicle-mounted AC charging port U; the positive terminal of the second battery pack 22 is connected to the negative terminal of the first battery pack 21, and the negative terminal of the second battery pack 22 is suitable for connection with the negative terminal of the vehicle-mounted AC charging port U. When the battery pack 10 is connected to the external vehicle-mounted AC charging port U, the first battery pack 21 and the second battery pack 22 are charged by an external AC power source.

[0041] In some embodiments, at least one original controller 3 is located in the box body 1, each original controller 3 is connected to the battery module 2, and each original controller 3 includes at least one switch tube, which is used to control the power supply status between the battery module 2 and the vehicle-mounted high-voltage components 20.

[0042] Specifically, it can be combined Figure 2 Understand the original controller 3 and the on-board high-voltage component 20 of the embodiment of the utility model. Among them, the original controller 3 is connected to the corresponding on-board high-voltage component 20 to control the operation of the on-board high-voltage component 20, and each original controller 3 is also connected to the battery module 2 to control the power supply state between the battery module 2 and the on-board high-voltage component 20. Figure 2As shown, the original controller 3 of at least one vehicle-mounted high-voltage component may include a drive motor controller 32, a vehicle-mounted electric heating component controller 33, and a step-down circuit 34, etc. The first end of the drive motor controller 32 is connected to the battery module 2, and the second end of the drive motor controller 32 is suitable for connecting to the vehicle-mounted drive motor 210. The first end of the vehicle-mounted electric heating component controller 33 is connected to the battery module 2, and the second end of the vehicle-mounted electric heating component controller 33 is suitable for connecting to the vehicle-mounted electric heating component 220. The first end of the step-down circuit 34 is connected to the battery module 2, and the second end of the step-down circuit 34 is suitable for connecting to the vehicle-mounted battery 230. By reusing the power devices in the drive motor controller 32, the vehicle-mounted electric heating component controller 33, and the step-down circuit 34, etc., the functions of the two main positive and negative contactors of the battery module 2 can be replaced, the output of the battery pack 10 can be controlled, and the state of controlling the power supply of the vehicle-mounted drive motor 210, the vehicle-mounted heating component 220, and the vehicle-mounted battery 230, etc. by the battery module 2 can be realized. Furthermore, the original controller 3 of at least one vehicle-mounted high-voltage component may also include a vehicle-mounted charger controller 31, a first end of the vehicle-mounted charger controller 31 is connected to the battery module 2, and a second end of the vehicle-mounted charger controller 31 is suitable for connecting to the vehicle-mounted AC charging port U.

[0043] It is understandable that in the control process, the original control algorithm can be adjusted to realize the reuse of the power devices in the on-board charger controller 31, which can replace the functions of the two main positive and negative contactors of the battery module 2, control the input of the battery pack 10, and realize the control of the charging state of each on-board high-voltage component 20 by the battery module 2. By integrating the original controller 3 of the high-voltage system components and the battery module 2 inside the battery pack 10, and by reusing the IGBT power devices of each controller 3 to control the connection and disconnection of the battery module 2, the total positive and total negative switch devices in the battery pack 10 can be eliminated, thereby reducing the number of main positive and negative switch devices of the battery module 2, realizing the maximum integration of the battery electronic control system without affecting the basic functions of the module, saving space, and reducing the manufacturing cost of the battery system.

[0044] According to the battery pack 10 proposed in the embodiment of the utility model, at least one original controller 3 is set between the battery module 2 and the vehicle-mounted high-voltage component 20. By controlling each original controller 3, it can be ensured that the original function of the vehicle-mounted high-voltage component 20 can be realized, and each original controller 3 can replace the original total positive and total negative switch devices of the battery module 2 to control the input and output of the battery pack 10, thereby realizing the control of the power supply state between the battery module 2 and the vehicle-mounted high-voltage component 20. Therefore, by reusing the circuits of each original controller 3, it is ensured that the battery module 2 and the vehicle-mounted high-voltage component 20 can both realize the original function. In addition, the battery module 2 and the original controllers 3 of each vehicle-mounted high-voltage component are integrated into a box body 1, which reduces the number of main positive and negative switch devices in the battery pack 10, greatly reduces the use of connecting wire harnesses and copper bars between the battery module 2 and each original controller 3, and further reduces the manufacturing cost of the battery system.

[0045] In some embodiments, the battery pack 10 further includes a first switch K1, which is located in the box body 1 and connected to the positive side of the battery module 2, for controlling the charge and discharge of the battery module 2. It is understandable that adding a switch device, namely the first switch K1, to the positive side of the battery module 2 can achieve safety redundancy, especially when the vehicle needs to be repaired and the high voltage needs to be disconnected urgently, and the high voltage can be disconnected by disconnecting the first switch K1. Moreover, the functions required by each load are realized by multiplexing the circuit and adjusting the control algorithm, thereby realizing the control of the operation of each high-voltage load.

[0046] Specifically, it can be combined Figure 3 To understand the configuration of the first switch K1 in the embodiment of the present utility model, Figure 3 , is a schematic diagram of a battery pack according to another embodiment of the utility model, wherein the first end of the first switch K1 is suitable for connecting to the positive end of the vehicle-mounted AC charging port U, and the second end of the first switch K1 is connected to the positive end of the battery module 2, that is, the first switch K1 is set between the vehicle-mounted AC charging port U and the positive end of the battery module 2 to achieve safety redundancy. Moreover, the functions required by each vehicle-mounted high-voltage component 20 are realized by adjusting the circuit reuse and the control algorithm, thereby realizing the control of the operation of each vehicle-mounted high-voltage component 20.

[0047] In some other embodiments, the battery pack 10 further includes a second switch K2 , which is located in the box body 1 and connected to the negative electrode side of the battery module 2 for controlling the charge and discharge of the battery module 2 .

[0048] Specifically, it can be combined Figure 4 To understand the configuration of the first switch K1 in the embodiment of the present utility model, Figure 4As shown, it is a schematic diagram of a battery pack according to another embodiment of the utility model, wherein the first end of the second switch K2 is connected to the negative end of the battery module 2, and the second end of the second switch K2 is suitable for being connected to the negative end of the vehicle-mounted AC charging port U, that is, the second switch K2 is arranged between the vehicle-mounted AC charging port U and the negative end of the battery module 2. By adding a switch device to the total negative of the battery module 2, the same effect as the above-mentioned embodiment of setting the first switch K1 can be achieved, which will not be repeated here.

[0049] In other embodiments, for the case where multiple battery groups are connected in series in the battery module 2, the switching device can also be set between two adjacent battery groups. The above embodiment is described by taking the battery module 2 as an example, which includes two battery groups, namely the first battery group 21 and the second battery group 22, and the two battery groups are connected in series.

[0050] Specifically, it can be combined Figure 5 To understand the configuration of the third switch K3 in the embodiment of the present utility model, Figure 6 , is a schematic diagram of a battery pack according to another embodiment of the utility model, wherein the battery pack 10 further includes a third switch K3, the third switch K3 is located in the box body 1, and the third switch K3 is connected between the two battery packs to control the charge and discharge of the battery module 2. The first end of the third switch K3 is connected to the negative terminal of the first battery pack 21, and the second end of the third switch K3 is connected to the positive terminal of the second battery pack. By adding a switch device between the first battery pack 21 and the second battery pack 22, the same effect as the above-mentioned embodiment of setting the first switch K1 or the second switch K2 can be achieved, and it will not be repeated here.

[0051] Furthermore, in some embodiments of the present invention, the battery pack 10 further includes a metal bar, which is disposed on the box body 1, and the original controller 3 of at least one vehicle-mounted high-voltage component is connected to the corresponding vehicle-mounted high-voltage component 20 through the metal bar. The material of the metal bar can be selected as needed, for example, a copper bar can be selected. In the battery pack 10, each vehicle-mounted high-voltage component 20 can be connected to the battery module 2 through the copper bar. Compared with cables, the copper bar has a better effect in improving the current carrying capacity and heat dissipation of the battery pack 10.

[0052] Based on the above, this embodiment realizes the required functions by reusing the circuit of the original controller 3 of at least one vehicle-mounted high-voltage component and adjusting the control algorithm, thereby realizing the control of the operation of each vehicle-mounted high-voltage component 20. For the reuse of the circuit of the integrated solution, this embodiment only adds a switch device to the total positive or total negative of the battery module 2, or for the solution in which the battery module 2 includes two battery packs connected in series, a switch device is set between the two battery packs, which can achieve safety redundancy. Compared with the method of setting a switch device at the total positive and total negative of the battery module 2, this embodiment can also reduce the number of switch devices used to a certain extent, which can effectively reduce costs. In addition, for each reduction of a contactor such as a switch device connected in series in the circuit, a copper busbar will be reduced. The solution of the above embodiment can effectively reduce the number of copper busbars and reduce labor costs.

[0053] In some embodiments of the present invention, Figure 2-Figure 6 As shown, the original controller 3 of at least one vehicle-mounted high-voltage component includes an on-board charger controller 31, the first end of the on-board charger controller 31 is connected to the battery module 2, and the second end of the on-board charger controller 31 is suitable for connecting to the on-board AC charging port U. When the battery pack 10 is connected to the on-board AC charging port U, the on-board AC charging port U is used to provide AC power to the battery module 2. During the charging process, the on-board charger controller 31 is used to control the input of the battery pack 10. Specifically, the on-board charger controller 31 can be externally connected to a low-voltage line or a CAN line, etc., and the switch tube therein can be turned on and off by receiving a control signal. When the on-board charger controller 31 responds to the electrical signal, it can realize the functions of controlling the charging process according to a preset control algorithm, such as adjusting the size of the charging current. In addition, a control algorithm can also be designed to control the connection and disconnection between the battery module 2 and the external power supply by reusing the circuit where the on-board charger controller 31 is located, so as to realize the control of the charging state of the battery module 2 by the on-board AC charging port U by reusing the on-board charger controller 31.

[0054] Furthermore, the on-board charger controller 31 includes a first switch tube, which is used to control the charging state of the battery module 2 by the on-board AC charging port U. It can be understood that the first switch tube can be an IGBT power device, or it can represent one of the components in the circuit where the on-board charger controller 31 is located, so as to realize the control of the input of the battery pack 10.

[0055] Specifically, it can be combined Figure 2-Figure 6 To understand the circuit composition of the vehicle charger controller 31 of the embodiment of the present invention, the following is Figure 3 The circuit shown in FIG. 1 is described as an example.

[0056] like Figure 3As shown, the on-board charger controller 31 may specifically include a first inductor L1, a second inductor L2, a first sub-switch tube V1, a second sub-switch tube V2, a third sub-switch tube V3, a fourth sub-switch tube V4, a fifth sub-switch tube V5, a sixth sub-switch tube V6, a first capacitor C1, a seventh sub-switch tube V7, an eighth sub-switch tube V8, a ninth sub-switch tube V9, a tenth sub-switch tube V10, a second capacitor C2, a third inductor L3, a first transformer T1, a fourth inductor L4, a third capacitor C3, an eleventh sub-switch tube V11, a twelfth sub-switch tube V12, a thirteenth sub-switch tube V13, a fourteenth sub-switch tube V14 and a fourth capacitor C4.

[0057] Among them, the first end of the first inductor L1 is suitable for connecting to the positive end of the vehicle-mounted AC charging port U; the first end of the second inductor L2 is connected to the first end of the first inductor L1 and the positive end of the vehicle-mounted AC charging port U; the first end of the first sub-switch tube V1 is connected to the second end of the first inductor L1; the first end of the second sub-switch tube V2 is connected to the first end of the first sub-switch tube V1 and the second end of the first inductor L1; the first end of the third sub-switch tube V3 is connected to the second end of the second inductor L2, and the second end of the third sub-switch tube V3 is connected to the second end of the first sub-switch tube V1; the first end of the fourth sub-switch tube V4 is connected to the first end of the third sub-switch tube V3 and the second end of the second inductor L2, and the second end of the fourth sub-switch tube V4 is connected to the second sub-switch tube V2 The first end of the fifth sub-switch tube V5 is suitable for being connected to the negative terminal of the vehicle-mounted AC charging port U, and the second end of the fifth sub-switch tube V5 is connected to the second end of the first sub-switch tube V1 and the second end of the third sub-switch tube V3; the first end of the sixth sub-switch tube V6 is suitable for being connected to the negative terminal of the vehicle-mounted AC charging port U and the first end of the fifth sub-switch tube V5, and the second end of the sixth sub-switch tube V6 is connected to the second end of the second sub-switch tube V2 and the second end of the fourth sub-switch tube V4; the first end of the first capacitor C1 is connected to the second end of the first sub-switch tube V1, the second end of the third sub-switch tube V3 and the second end of the fifth sub-switch tube V5, and the second end of the first capacitor C1 is connected to the second end of the second sub-switch tube V2, the second end of the fourth sub-switch tube V4 The second end of the ninth sub-switch tube V9 is connected to the second end of the first sub-switch tube V1, the second end of the third sub-switch tube V3, the second end of the fifth sub-switch tube V5, and the first end of the first capacitor C1; the first end of the eighth sub-switch tube V8 is connected to the first end of the seventh sub-switch tube V7, and the second end of the eighth sub-switch tube V8 is connected to the second end of the second sub-switch tube V2, the second end of the fourth sub-switch tube V4, the second end of the sixth sub-switch tube V6, and the second end of the first capacitor C1; the second end of the ninth sub-switch tube V9 is connected to the second end of the first sub-switch tube V1, the second end of the third sub-switch tube V3, the second end of the fifth sub-switch tube V5, the first end of the first capacitor C1, and the seventh sub-switch tube V7 the first end of the tenth sub-switch tube V10 is connected to the first end of the ninth sub-switch tube V9, the second end of the tenth sub-switch tube V10 is connected to the second end of the second sub-switch tube V2, the second end of the fourth sub-switch tube V4, the second end of the sixth sub-switch tube V6, the second end of the first capacitor C1 and the second end of the eighth sub-switch tube V8; the first end of the second capacitor C2 is connected to the first end of the seventh sub-switch tube V7 and the first end of the eighth sub-switch tube V8; the first end of the third inductor L3 is connected to the second end of the second capacitor C2; the first input end of the first transformer T1 is connected to the second end of the third inductor L3, and the second input end of the first transformer T1 is connected to the first end of the ninth sub-switch tube V9 and the first end of the tenth sub-switch tube V10;The first end of the fourth inductor L4 is connected to the second output end of the first transformer T1; the first end of the third capacitor C3 is connected to the second end of the fourth inductor L4; the first end of the eleventh sub-switch tube V11 is connected to the first output end of the first transformer T1, and the second end of the eleventh sub-switch tube V11 is connected to the positive terminal of the battery module 2; the first end of the twelfth sub-switch tube V12 is connected to the first output end of the first transformer T1 and the first end of the eleventh sub-switch tube V11, and the second end of the twelfth sub-switch tube V12 is connected to the negative terminal of the battery module 2; the first end of the thirteenth sub-switch tube V13 is connected to the second end of the third capacitor C3, and the The second end is connected to the positive terminal of the battery module 2 and the second end of the eleventh sub-switch tube V11; the first end of the fourteenth sub-switch tube V14 is connected to the second end of the third capacitor C3 and the first end of the thirteenth sub-switch tube V13, and the second end of the fourteenth sub-switch tube V14 is connected to the negative terminal of the battery module 2 and the second end of the twelfth sub-switch tube V12; the first end of the fourth capacitor C4 is connected to the positive terminal of the battery module 2, the second end of the eleventh sub-switch tube V11, and the second end of the thirteenth sub-switch tube V13, and the second end of the fourth capacitor C4 is connected to the negative terminal of the battery module 2, the second end of the twelfth sub-switch tube V12, and the second end of the fourteenth sub-switch tube V14. ;

[0058] Furthermore, the bases of the first to fourteenth sub-switch tubes V1 to V14 can be connected to a low-voltage line outside the battery pack 10 to obtain a low-voltage electrical signal, or connected to a CAN line outside the battery pack 10 so that the user can obtain a CAN signal, and the first to fourteenth sub-switch tubes V1 to V14 can all respond to electrical signals to achieve on-off, thereby multiplexing the circuit where the on-board charger controller 31 is located, controlling the connection and disconnection between the battery module 2 and the external power supply, and controlling the charging state of the battery module 2 by the on-board AC charging port U.

[0059] In some embodiments of the present invention, Figure 2-Figure 6As shown, the original controller 3 of at least one vehicle-mounted high-voltage component may also include a drive motor controller 32, the first end of the drive motor controller 32 is connected to the battery module 2, and the second end of the drive motor controller 32 is suitable for connecting to the vehicle-mounted drive motor 210. Among them, a control algorithm can also be designed. When the vehicle-mounted drive motor 210 needs to work, the circuit where the drive motor controller 32 is located can be turned on according to the preset control algorithm, and the battery module 2 supplies power to the vehicle-mounted drive motor 210. During the power supply process, the drive motor controller 32 is used to control the output of the battery pack 10. Specifically, the drive motor controller 32 can be externally connected to a low-voltage line or a CAN line, etc., and the switch tube therein can be turned on and off by receiving a control signal. When the drive motor controller 32 responds to the electrical signal, it can realize the process of controlling the battery module 2 to supply power to the vehicle-mounted drive motor 210 according to the preset control algorithm, such as adjusting the size of the power supply current and other functions. For example, when the IGBT and other power devices in the drive motor controller 32 are normally switched and closed according to the control signal, the battery module 2 can discharge normally, and the vehicle-mounted drive motor 210 can operate normally according to the control signal. The IGBT power device of the drive motor controller 32 is used to replace the function of the contactor to control the working state of the vehicle-mounted drive motor 210. The IGBT power device in the drive motor controller 32 is reused to replace the functions of the two main positive and negative contactors of the battery module 2, thereby reducing the number of main positive and negative switch devices of the battery module 2, saving space and reducing costs.

[0060] Furthermore, the connection and disconnection between the battery module 2 and the vehicle-mounted drive motor 210 can be controlled by reusing the circuit where the drive motor controller 32 is located, thereby realizing the state of controlling the battery module 2 to supply power to the vehicle-mounted drive motor 210 by reusing the drive motor controller 32 .

[0061] Furthermore, the drive motor controller 32 includes a second switch tube, which is used to control the charge and discharge state of the battery module 2 to the vehicle drive motor 210. It can be understood that the second switch tube can be an IGBT power device, or it can represent one of the components in the circuit where the drive motor controller 32 is located, so as to realize the output control of the battery pack 10.

[0062] Specifically, it can be combined Figure 2-Figure 6 To understand the circuit composition of the drive motor controller 32 of the present utility model embodiment, the following is Figure 3 The circuit shown in FIG. 1 is described as an example.

[0063] like Figure 3As shown, the drive motor controller 32 includes a fifth capacitor C5, a fifteenth sub-switch tube V15, a sixteenth sub-switch tube V16, a seventeenth sub-switch tube V17, an eighteenth sub-switch tube V18, a nineteenth sub-switch tube V19 and a twentieth sub-switch tube V20.

[0064] Among them, the first end of the fifth capacitor C5 is connected to the positive terminal of the battery module 2 and the positive terminal of the vehicle-mounted AC charging port U, and the second end of the fifth capacitor C5 is connected to the negative terminal of the battery module 2 and the negative terminal of the vehicle-mounted AC charging port U; the first end of the fifteenth sub-switch tube V15 is suitable for being connected to the positive terminal of the vehicle-mounted AC charging port U, the positive terminal of the battery module 2 and the first end of the fifth capacitor C5, and the second end of the fifteenth sub-switch tube V15 is connected to the first control terminal of the vehicle-mounted drive motor 210; the first end of the sixteenth sub-switch tube V16 is connected to the fifteenth sub-switch The second end of the switch tube V15 is connected to the first control end of the vehicle drive motor 210, the second end of the sixteenth sub-switch tube V16 is suitable for being connected to the negative end of the vehicle AC charging port U, the negative end of the battery module 2 and the second end of the fifth capacitor C5; the first end of the seventeenth sub-switch tube V17 is suitable for being connected to the positive end of the vehicle AC charging port U, the positive end of the battery module 2, the first end of the fifth capacitor C5 and the first end of the fifteenth sub-switch tube V15, and the second end of the seventeenth sub-switch tube V17 is connected to the second control end of the vehicle drive motor 210; The first end of the eighteenth sub-switch tube V18 is connected to the second end of the seventeenth sub-switch tube V17 and the second control end of the vehicle-mounted drive motor 210. The second end of the eighteenth sub-switch tube V18 is suitable for being connected to the negative terminal of the vehicle-mounted AC charging port U, the negative terminal of the battery module 2, the second end of the fifth capacitor C5, and the second end of the sixteenth sub-switch tube V16. The first end of the nineteenth sub-switch tube V19 is suitable for being connected to the positive terminal of the vehicle-mounted AC charging port U, the positive terminal of the battery module 2, the first end of the fifth capacitor C5, the first end of the fifteenth sub-switch tube V15. The first end of the twentieth sub-switch tube V20 is connected to the second end of the nineteenth sub-switch tube V19 and the third control end of the vehicle-mounted drive motor 210, and the second end of the twentieth sub-switch tube V20 is suitable for being connected to the negative terminal of the vehicle-mounted AC charging port U, the negative terminal of the battery module 2, the second end of the fifth capacitor C5, the second end of the sixteenth sub-switch tube V16 and the second end of the eighteenth sub-switch tube V18.

[0065] Furthermore, the bases of the fifteenth to twentieth sub-switch tubes V15 to V20 can be connected to the low-voltage line outside the battery pack 10 to obtain low-voltage electrical signals, or connected to the CAN line outside the battery pack 10 to obtain CAN signals, and the fifteenth to twentieth sub-switch tubes V15 to V20 can all respond to electrical signals to achieve on-off, thereby realizing the reuse of the circuit where the drive motor controller 32 is located, controlling the connection and disconnection between the battery module 2 and the vehicle-mounted drive motor 210, and controlling the operation of the vehicle-mounted drive motor 210. By reusing the IGBT power device in the drive motor controller 32, the functions of the two main positive and negative contactors of the battery module 2 are replaced, thereby reducing the number of main positive and negative switch devices of the battery module 2, saving space, and reducing costs.

[0066] In some embodiments of the present invention, Figure 2-Figure 6 As shown, the original controller 3 of at least one vehicle-mounted high-voltage component may also include a vehicle-mounted electric heating component controller 33, the first end of the vehicle-mounted electric heating component controller 33 is connected to the battery module 2, and the second end of the vehicle-mounted electric heating component controller 33 is suitable for connecting to the vehicle-mounted electric heating component 220.

[0067] Among them, when the vehicle heating component 220 needs to work, the circuit where the vehicle heating component controller 33 is located can be turned on according to the preset control algorithm, and the battery module 2 can power the vehicle heating component 220. During the power supply process, the vehicle heating component controller 33 is used to control the output of the battery pack 10. Specifically, the vehicle heating component controller 33 can be externally connected to a low-voltage line or a CAN line, etc., and the switch tube therein can be turned on and off by receiving a control signal. When the vehicle heating component controller 33 responds to the electrical signal, it can realize the process of controlling the battery module 2 to power the vehicle heating component 220 according to the preset control algorithm, such as adjusting the size of the power supply current and other functions. For example, when the IGBT and other power devices in the vehicle heating component controller 33 are normally switched and closed according to the control signal, the battery module 2 can discharge normally, and the vehicle heating component 220 can operate normally according to the control signal. The IGBT power device of the vehicle heating component controller 33 is used to replace the function of the contactor to control the working state of the vehicle heating component 220. The IGBT power device in the vehicle heating component controller 33 is reused to replace the functions of the two main positive and negative contactors of the battery module 2, thereby reducing the number of main positive and negative switch devices of the battery module 2, saving space and reducing costs.

[0068] Furthermore, by reusing the circuit where the vehicle heating component controller 33 is located, the connection and disconnection between the battery module 2 and the vehicle heating component 220 can be controlled, thereby achieving the state of controlling the battery module 2 to supply power to the vehicle heating component 220 by reusing the vehicle heating component controller 33.

[0069] Furthermore, the vehicle-mounted electric heating component controller 33 includes a third switch tube, which is used to control the power supply state of the battery module 2 to the vehicle-mounted electric heating component 220. It can be understood that the third switch tube can be an IGBT power device, or it can represent one of the components in the circuit where the vehicle-mounted heating component controller 33 is located, so as to realize the output control of the battery pack 10.

[0070] Specifically, it can be combined Figure 2-Figure 6 To understand the circuit composition of the vehicle-mounted electric heating component controller 33 of the present utility model embodiment, the following is Figure 3 The circuit shown in FIG. 1 is used as an example for description, wherein the vehicle heating component 220 may include a PTC device 221 and a compressor 222 .

[0071] like Figure 3 As shown, the vehicle electric heating component controller 33 includes a twenty-first sub-switch tube V21, a twenty-second sub-switch tube V22, a twenty-third sub-switch tube V23, a twenty-fourth sub-switch tube V24, a twenty-fifth sub-switch tube V25, a twenty-sixth sub-switch tube V26, a twenty-seventh sub-switch tube V27, a twenty-eighth sub-switch tube V28 and a sixth capacitor C6.

[0072] Among them, the first end of the twenty-first sub-switch tube V21 is suitable for connecting to the positive terminal of the vehicle-mounted AC charging port U and the positive terminal of the battery module 2, and the second end of the twenty-first sub-switch tube V21 is connected to the first control end of the PTC device 221; the first end of the twenty-second sub-switch tube V22 is suitable for connecting to the positive terminal of the vehicle-mounted AC charging port U, the positive terminal of the battery module 2, and the first end of the twenty-first sub-switch tube V21, and the second end of the twenty-second sub-switch tube V22 is connected to the second control end of the PTC device 221; the first end of the twenty-third sub-switch tube V23 is suitable for connecting to the positive terminal of the vehicle-mounted AC charging port U , the positive terminal of the battery module 2 is connected to the first end of the twenty-first sub-switch tube V21, and the second end of the twenty-third sub-switch tube V23 is connected to the first control end of the compressor 222; the first end of the twenty-fourth sub-switch tube V24 is connected to the second end of the twenty-third sub-switch tube V23 and the first control end of the compressor 222, and the second end of the twenty-fourth sub-switch tube V24 is suitable for being connected to the negative terminal of the vehicle-mounted AC charging port U and the negative terminal of the battery module 2; the first end of the twenty-fifth sub-switch tube V25 is suitable for being connected to the positive terminal of the vehicle-mounted AC charging port U, the positive terminal of the battery module 2, the twenty-first sub-switch tube V21 The first end of the twenty-sixth sub-switch tube V26 is connected to the first end of the twenty-fifth sub-switch tube V25 and the second control end of the compressor 222, and the second end of the twenty-sixth sub-switch tube V26 is suitable for being connected to the negative terminal of the vehicle-mounted AC charging port U, the negative terminal of the battery module 2, and the second end of the twenty-fourth sub-switch tube V24; the first end of the twenty-seventh sub-switch tube V27 is suitable for being connected to the positive terminal of the vehicle-mounted AC charging port U, the positive terminal of the battery module 2, and the second end of the twenty-fifth sub-switch tube V25. The first end of the twenty-first sub-switch tube V21, the first end of the twenty-third sub-switch tube V23 and the first end of the twenty-fifth sub-switch tube V25 are connected, and the second end of the twenty-seventh sub-switch tube V27 is connected to the third control end of the compressor 222; the first end of the twenty-eighth sub-switch tube V28 is connected to the second end of the twenty-seventh sub-switch tube V27 and the third control end of the compressor 222, and the second end of the twenty-eighth sub-switch tube V28 is suitable for being connected to the negative end of the vehicle-mounted AC charging port U, the negative end of the battery module 2, the second end of the twenty-fourth sub-switch tube V24, and the second end of the twenty-sixth sub-switch tube V26;The first end of the sixth capacitor C6 is suitable for connecting to the positive terminal of the vehicle AC charging port U, the positive terminal of the battery module 2, the first end of the 21st sub-switch tube V21, the first end of the 22nd sub-switch tube V22, the first end of the 23rd sub-switch tube V23, the first end of the 25th sub-switch tube V25, and the first end of the 27th sub-switch tube V27, and the second end of the sixth capacitor C6 is suitable for connecting to the negative terminal of the vehicle AC charging port U, the negative terminal of the battery module 2, the second end of the 24th sub-switch tube V24, the second end of the 26th sub-switch tube V26, and the second end of the 28th sub-switch tube V28. ;

[0073] Furthermore, the bases of the twenty-first to twenty-eighth sub-switch tubes V21 to V28 can be connected to the low-voltage line outside the battery pack 10 to obtain low-voltage electrical signals, or connected to the CAN line outside the battery pack 10 to obtain CAN signals, and the twenty-first to twenty-eighth sub-switch tubes V21 to V28 can all respond to electrical signals to achieve on-off, thereby reusing the circuit where the on-board electric heating component controller 33 is located, controlling the connection and disconnection between the battery module 2 and the on-board electric heating component 220, and controlling the operation of the on-board electric heating component 220. By reusing the IGBT power device in the on-board electric heating component controller 33, the functions of the two main positive and negative contactors of the battery module 2 are replaced, thereby reducing the number of main positive and negative switch devices of the battery module 2, saving space, and reducing costs.

[0074] In some embodiments of the present invention, Figure 2-Figure 6 As shown, the original controller 3 of at least one vehicle-mounted high-voltage component may also include a step-down circuit 34 , a first end of the step-down circuit 34 is connected to the battery module 2 , and a second end of the step-down circuit 34 is suitable for connecting to the vehicle-mounted battery 230 .

[0075] Among them, there are also some low-voltage loads in the vehicle. The battery module 2 in the battery pack 10 in this embodiment is a high-voltage battery pack, which can be directly used to power the vehicle-mounted high-voltage load. When the vehicle-mounted low-voltage load needs to work, it needs to be powered by a low-voltage battery, that is, the vehicle-mounted battery 230. The power in the vehicle-mounted battery 230 can be directly provided by the battery module 2. Therefore, a step-down circuit 34 needs to be provided between the vehicle-mounted battery 230 and the battery module 2. The circuit where the step-down circuit 34 is located can be turned on according to a preset control algorithm to realize that the battery module 2 is used to power the vehicle-mounted battery 230. During the power supply process, the step-down circuit 34 is used to control the output of the battery pack 10.

[0076] Specifically, the step-down circuit 34 can be externally connected to a low-voltage line or a CAN line, etc., and the switch tube therein can be switched on and off by receiving a control signal. When the step-down circuit 34 responds to an electrical signal, it can realize the process of controlling the battery module 2 to supply power to the vehicle-mounted battery 230 according to a preset control algorithm, such as adjusting the magnitude of the power supply current, etc. For example, when the power devices such as IGBT in the step-down circuit 34 are normally switched on and off according to the control signal, the battery module 2 can be normally discharged to the outside, and the vehicle-mounted battery 230 can be normally charged according to the control signal. By using the IGBT power device of the step-down circuit 34 to replace the function of the contactor to control the working state of the vehicle-mounted battery 230, the IGBT power device in the step-down circuit 34 is reused to replace the functions of the two main positive and negative contactors of the battery module 2, thereby reducing the number of main positive and negative switch devices of the battery module 2, saving space, and reducing costs.

[0077] Furthermore, the connection and disconnection between the battery module 2 and the vehicle battery 230 can be controlled by reusing the circuit where the step-down circuit 34 is located, thereby realizing the state of controlling the battery module 2 to supply power to the vehicle battery 230 by reusing the step-down circuit 34 .

[0078] Furthermore, the buck circuit 34 includes a fourth switch tube, which is used to control the power supply state of the battery module 2 to the vehicle battery 230. It can be understood that the fourth switch tube can be an IGBT power device, or it can represent one of the components in the circuit where the buck circuit 34 is located, so as to realize the control of the output of the battery pack 10.

[0079] Specifically, it can be combined Figure 2-Figure 6 To understand the circuit composition of the step-down circuit 34 of the present utility model embodiment, the following is Figure 3 The circuit shown in FIG. 1 is described as an example.

[0080] like Figure 3 As shown, the step-down circuit 34 includes a twenty-ninth sub-switch tube V29, a thirtieth sub-switch tube V30, a seventh capacitor C7, an eighth capacitor C8, a fifth inductor L5, a second transformer T2, a thirty-first sub-switch tube V31, a thirty-second sub-switch tube V32, a ninth capacitor C9 and a voltage-stabilizing diode D.

[0081] Among them, the first end of the twenty-ninth sub-switch tube V29 is suitable for connecting to the positive terminal of the vehicle-mounted AC charging port U and the positive terminal of the battery module 2; the first end of the thirtieth sub-switch tube V30 is connected to the second end of the twenty-ninth sub-switch tube V29, and the second end of the thirtieth sub-switch tube V30 is suitable for connecting to the negative terminal of the vehicle-mounted AC charging port U and the negative terminal of the battery module 2; the first end of the seventh capacitor C7 is suitable for connecting to the positive terminal of the vehicle-mounted AC charging port U, the positive terminal of the battery module 2 and the first end of the twenty-ninth sub-switch tube V29; the first end of the eighth capacitor C8 is connected to the second end of the seventh capacitor C7, and the second end of the eighth capacitor C8 is suitable for connecting to the negative terminal of the vehicle-mounted AC charging port U, the negative terminal of the battery module 2 and the second end of the thirtieth sub-switch tube V30; the first end of the fifth inductor L5 is connected to the second end of the twenty-ninth sub-switch tube V29 and the first end of the thirtieth sub-switch tube V30; the first input end of the second transformer T2 is connected to the second end of the fifth inductor L5, and the second input end of the second transformer T2 is connected to the seventh capacitor C7. The second end is connected to the first end of the eighth capacitor C8; the first end of the thirty-first sub-switch tube V31 is connected to the first output end of the second transformer T2, and the second end of the thirty-first sub-switch tube V31 is connected to the positive terminal of the vehicle battery 230; the first end of the thirty-second sub-switch tube V32 is connected to the second output end of the second transformer T2, and the second end of the thirty-second sub-switch tube V32 is connected to the second end of the thirty-first sub-switch tube V31 and the positive terminal of the vehicle battery 230; the first end of the ninth capacitor C9 is connected to the second end of the thirty-first sub-switch tube V31 and the positive terminal of the vehicle battery 230, and the second end of the ninth capacitor C9 is connected to the third output end of the second transformer T2 and the negative terminal of the vehicle battery 230; the positive terminal of the Zener diode D is connected to the third output end of the second transformer T2, the negative terminal of the vehicle battery 230 and the second end of the ninth capacitor C9, and the negative terminal of the Zener diode D is connected to the second end of the thirty-first sub-switch tube V31, the positive terminal of the vehicle battery 230 and the first end of the ninth capacitor C9.

[0082] Furthermore, the bases of the twenty-ninth to thirty-second sub-switch tubes V29 to V32 can be connected to the low-voltage line outside the battery pack 10 to obtain low-voltage electrical signals, or connected to the CAN line outside the battery pack 10 to obtain CAN signals, and the twenty-ninth to thirty-second sub-switch tubes V29 to V32 can all respond to electrical signals to achieve on-off, thereby realizing the reuse of the circuit where the buck circuit 34 is located, controlling the connection and disconnection between the battery module 2 and the vehicle-mounted battery 230, and controlling the operation of the vehicle-mounted battery 230. By reusing the IGBT power device in the buck circuit 34, the functions of the two main positive and negative contactors of the battery module 2 are replaced, thereby reducing the number of main positive and negative switch devices of the battery module 2, saving space, and reducing costs.

[0083] Based on the above, the utility model integrates the original controllers 3 such as the on-board charger controller 31, the drive motor controller 32, the on-board electric heating component controller 33 and the step-down circuit 34 and the battery module 2 inside the battery pack 10, and by controlling the on and off of the IGBT power devices in each original controller 3, each original controller 3 can replace the original total positive and total negative switch devices of the battery module 2 to control the input and output of the battery pack 10, and by reusing the circuits where each original controller 3 is located, the operating state of high-voltage loads such as the on-board drive motor 210, the on-board heating component 220 and the on-board battery 230 is controlled to achieve the required functions. In addition, since the IGBT power devices of each original controller 3 are reused to control the on and off of the battery module 2, the total positive and total negative switch devices of the battery module 2 are cancelled, thereby greatly reducing the use of the connection harness and copper bus between the battery module 2 and each original controller 3, further reducing the manufacturing cost of the battery system.

[0084] In some embodiments of the present invention, a vehicle is also provided, such as Figure 7 , which is a block diagram of a vehicle according to an embodiment of the present utility model, wherein the original controller 3 of the vehicle-mounted high-voltage component is not shown in the figure. The vehicle 100 includes a battery pack 10 according to any of the above embodiments and at least one vehicle-mounted high-voltage component 20, the battery pack 10 is integrated with the original controller 3 of at least one vehicle-mounted high-voltage component; and at least one vehicle-mounted high-voltage component 20 is correspondingly connected to the original controller 3 of at least one vehicle-mounted high-voltage component.

[0085] According to the vehicle 100 proposed in the embodiment of the utility model, the original controller 3 of each vehicle-mounted high-voltage component is integrated in the battery pack 10. By reusing the circuits of the original controller 3 of each vehicle-mounted high-voltage component, the number of main positive and negative switch devices in the battery pack 10 is reduced while ensuring that the battery pack 10 and the vehicle-mounted high-voltage components 20 can achieve their original functions, which can effectively reduce the production cost and maintenance cost of the vehicle 100.

[0086] Other structures and operations of the vehicle 100 and the battery pack 10 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0088] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: Box body; A battery module, wherein the battery module is located in the box body; as well as The original controller of at least one vehicle-mounted high-voltage component is integrated in the box body, and the original controller is connected to the corresponding vehicle-mounted high-voltage component to control the operation of the vehicle-mounted high-voltage component. Each original controller is also connected to the battery module to control the power supply status between the battery module and the vehicle-mounted high-voltage component.

2. The battery pack according to claim 1, characterized in that: The battery pack further comprises: A first switch, wherein the first switch is located in the box body and connected to the positive electrode side of the battery module, and is used to control the charge and discharge of the battery module.

3. The battery pack according to claim 1, characterized in that: The battery pack further comprises: A second switch is located in the box body, and the second switch is connected to the negative electrode side of the battery module to control the charge and discharge of the battery module.

4. The battery pack according to claim 1, characterized in that: The battery module includes a plurality of battery packs connected in series; The battery pack also includes a third switch, which is located in the box body and connected between the two battery packs to control the charging and discharging of the battery module.

5. The battery pack according to claim 1, characterized in that: The battery pack further comprises: A metal bar, wherein the metal bar is arranged on the box body, and the controller of the at least one vehicle-mounted high-voltage component is connected to the corresponding vehicle-mounted high-voltage component through the metal bar.

6. The battery pack according to any one of claims 1 to 5, characterized in that: The original controller of at least one vehicle-mounted high-voltage component comprises: An on-board charger controller, wherein a first end of the on-board charger controller is connected to the battery module, and a second end of the on-board charger controller is suitable for connecting to an on-board AC charging port; The on-board charger controller includes a first switch tube, and the first switch tube is used to control the charging state of the battery module by the on-board AC charging port.

7. The battery pack according to any one of claims 1 to 5, characterized in that: The original controller of at least one vehicle-mounted high-voltage component comprises: A drive motor controller, wherein a first end of the drive motor controller is connected to the battery module, and a second end of the drive motor controller is suitable for being connected to a vehicle-mounted drive motor; The drive motor controller includes a second switch tube, and the second switch tube is used to control the charging and discharging state of the battery module to the vehicle-mounted drive motor.

8. The battery pack according to any one of claims 1 to 5, characterized in that: The original controller of at least one vehicle-mounted high-voltage component comprises: A vehicle-mounted electric heating component controller, wherein a first end of the vehicle-mounted electric heating component controller is connected to the battery module, and a second end of the vehicle-mounted electric heating component controller is suitable for connecting to a vehicle-mounted electric heating component; The vehicle-mounted electric heating component controller includes a third switch tube, and the third switch tube is used to control the power supply state of the battery module to the vehicle-mounted electric heating component.

9. The battery pack according to any one of claims 1 to 5, characterized in that: The original controller of at least one vehicle-mounted high-voltage component comprises: A step-down circuit, wherein a first end of the step-down circuit is connected to the battery module, and a second end of the step-down circuit is suitable for being connected to a vehicle-mounted battery; The step-down circuit includes a fourth switch tube, and the fourth switch tube is used to control the power supply state of the battery module to the vehicle-mounted battery.

10. A vehicle, characterized in that: include: The battery pack according to any one of claims 1 to 9, wherein the battery pack integrates at least one original controller of an on-board high-voltage component; as well as At least one vehicle-mounted high-voltage component, at least one of the vehicle-mounted high-voltage components is correspondingly connected to an original controller of the at least one vehicle-mounted high-voltage component.

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