Power distribution device, battery and vehicle

Abstract

The invention provides a power distribution device, a battery and a vehicle. The power distribution device comprises a battery management system unit and a power distribution unit. The battery management system unit comprises a mounting part and a battery management element, the battery management element is connected to the mounting part, and the battery management element is electrically connected with a single battery body of the battery; the power distribution unit comprises a shell and a power distribution element, the power distribution element is arranged in the shell, the mounting piece is arranged on the outer wall of the shell, and the battery management element is electrically connected with the power distribution element. The power distribution device provided by the invention is beneficial to reducing the distance between the power distribution element and the battery management element and reducing the length of the conductive connecting line between the power distribution element and the battery management element so as to improve the reliability of the conductive connecting line, and is beneficial to improving the reliability of the battery when the power distribution device is applied to the battery; and arrangement of related electrical elements such as a current acquisition controller in the battery is reduced, so that the space in the battery is saved, and the production cost of the battery is reduced.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a power distribution device, a battery and a vehicle. Background Art

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptop computers, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc. Batteries can include nickel-cadmium batteries, nickel-hydrogen batteries, lithium-ion batteries, and secondary alkaline zinc-manganese batteries, etc.

[0003] In the development of battery technology, how to improve the reliability of batteries has become a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0004] The embodiments of the present application provide a power distribution device, a battery and a vehicle, which can improve the reliability performance of the battery.

[0005] In a first aspect, the present application provides a power distribution device including a battery management system unit and a power distribution unit; the battery management system unit includes a mounting piece and a battery management element, the battery management element is connected to the mounting piece, and the battery management element is electrically connected to the battery cell of the battery; the power distribution unit includes a shell and a power distribution element, the power distribution element is arranged in the shell, the mounting piece is arranged in the shell, and the battery management element is electrically connected to the power distribution element.

[0006] In some embodiments, the power distribution unit further includes a connecting member, the connecting member is disposed on the shell, and the mounting member is connected to the connecting member.

[0007] In some embodiments, the power distribution unit further includes an insulating member, which is disposed at least on a side of the connecting member facing the interior of the shell.

[0008] In some embodiments, the power distribution unit further includes a connector, which is disposed in the housing and electrically connected to the power distribution element, and the battery management system unit further includes a connecting harness, which electrically connects the battery management element and the connector.

[0009] In some embodiments, the connecting wire harness includes a wire harness body and a plug-in component electrically connected to each other, and the plug-in component is plugged into the connector.

[0010] In some embodiments, the shell includes a first shell, a second shell, an insulating clip and a threaded part. The first shell and the second shell cover each other. The insulating clip is clipped and connected to at least one of the first shell and the second shell to connect the first shell and the second shell. The threaded part connects the first shell and the second shell.

[0011] In some embodiments, the shell has a mounting portion, the mounting portion has a mounting hole, the mounting portion is used to connect to the battery box, the mounting portion has a first accommodating groove and a second accommodating groove on both sides, the mounting hole connects the first accommodating groove and the second accommodating groove, the shell has a first surface, a second surface and a third surface, the first surface and the second surface are arranged opposite to each other, the third surface connects the first surface and the second surface, the first accommodating groove passes through the first surface and the third surface, and the second accommodating groove passes through the second surface and the third surface.

[0012] In some embodiments, the power distribution unit further includes a wire, which is electrically connected to the power distribution element, and the wire is disposed on the inner wall of the shell and between the power distribution elements.

[0013] In some embodiments, the distribution element includes a current collection element, the distribution unit includes a positive terminal and a negative terminal, the current collection element electrically connects the positive terminal and the negative terminal, and the current collection element, the positive terminal, the negative terminal and the battery cell form a high-voltage circuit.

[0014] In a second aspect, an embodiment of the present application provides a battery, comprising a power distribution device provided by any of the above embodiments.

[0015] In a third aspect, an embodiment of the present application provides a vehicle, comprising the battery provided in the above embodiment, and the battery is used to provide electrical energy.

[0016] The distribution device, battery and vehicle provided in the embodiments of the present application realize connecting the battery management system unit to the shell of the distribution unit by arranging the mounting parts of the battery management system unit on the shell, which is beneficial to simplify the installation structure of the battery management system unit, and is beneficial to reducing the distance between the distribution element and the battery management element, and reducing the length of the conductive connecting line between the two, so as to improve the reliability of the conductive connecting line, thereby improving the reliability performance of the battery, and reducing the setting of related electrical components inside the battery, such as the current acquisition controller, etc., saving space inside the battery, and reducing the production cost of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

[0019] Figure 2 is a structural schematic diagram of a partial structure of a battery provided in an embodiment of the present application;

[0020] Figure 3 is a structural schematic diagram of a partial structure of another battery provided in an embodiment of the present application;

[0021] Figure 4 is an exploded schematic diagram of a partial structure of a battery provided in an embodiment of the present application;

[0022] Figure 5 is a structural schematic diagram of a partial structure of another battery provided in an embodiment of the present application;

[0023] Figure 6 It is a partial structural schematic diagram of a power distribution unit of a battery provided in an embodiment of the present application;

[0024] Figure 7 It is a partial structural schematic diagram of another battery distribution unit provided in an embodiment of the present application;

[0025] Figure 8 It is a partial structural schematic diagram of another battery distribution unit provided in an embodiment of the present application.

[0026] In the drawings, the figures are not necessarily drawn to scale.

[0027] The reference numerals in the specific implementation manner are as follows:

[0028] 1. Vehicles;

[0029] 100, battery; 11, housing; 11a, receiving chamber; 12, battery cell;

[0030] 10. Power distribution device;

[0031] 13. Battery management system unit; 131. Mounting part; 132. Connector;

[0032] 14. Power distribution unit; 141. Shell; 1411. First shell; 1412. Second shell; 1413. Insulating clip; 1414. Threaded member; 1415. Mounting portion; 141a. Mounting hole; 141b. First receiving groove; 141c. Second receiving groove; 141d. First surface; 141e. Second surface; 141f. Third surface; 142. Connector; 143. Insulating member; 144. Connector; 145. Wire; 146. Power distribution element. DETAILED DESCRIPTION

[0033] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0035] It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings and are only for the convenience of description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on this patent.

[0036] It should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The power distribution unit can distribute the battery's electrical energy to electrical devices in the vehicle, such as air conditioners, motors, etc., to achieve the corresponding cooling, driving and other functions of the vehicle. In the related art, the power distribution unit is integrated into the battery box, and the power distribution unit needs to be electrically connected to the battery management system unit of the battery to achieve normal operation of the power distribution unit. However, the connection harness between the power distribution unit and the battery management system unit is complex and long, and the space inside the battery is limited, which easily causes wear of the connection harness, seriously affecting the reliability of the battery.

[0038] In view of this, the embodiments of the present application provide a battery and a vehicle using the battery to improve the reliability of the battery. The battery and the vehicle using the battery provided in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0039] like Figures 1 to 4 As shown, the power distribution device 10 provided according to the embodiment of the present application includes a battery management system unit 13 and a power distribution unit 14. The battery management system unit 13 includes a mounting member 131 and a battery management element. The battery management element is connected to the mounting member 131, and the battery management element is electrically connected to the battery cell 12 of the battery 1000. The power distribution unit 14 includes a housing 141 and a power distribution element 146. The power distribution element 146 is disposed in the housing 141. The mounting member 131 is disposed in the housing 141. The battery management element is electrically connected to the power distribution element 146.

[0040] The power distribution device 10 provided in the embodiment of the present application can be used for the battery 100 provided in the embodiment of the present application, and the battery 100 includes a box body 11 and a battery cell 12, and the box body 11 has a receiving cavity 11a, and the battery cell 12 and the power distribution device 10 are both received in the receiving cavity 11a. The battery 100 can be used in the vehicle 1 to provide electric energy for the vehicle 1.

[0041] The battery cell 12 may be the smallest energy unit of the battery 100, which can realize the cyclic charge and discharge process of the battery cell 12 by the internal ions of the battery cell 12, such as lithium ions, sodium ions or magnesium ions, moving back and forth between the positive electrode sheet and the negative electrode sheet. By connecting multiple battery cells 12 in series or in parallel, the energy storage capacity of the battery 100 can be increased.

[0042] The battery management system unit 13 includes a battery management element and a mounting member 131. The mounting member 131 may be in the shape of a plate, or in the shape of a sealed shell. The battery management element is disposed on the mounting member 131 so that the mounting member 131 provides a certain bearing effect on the battery management element.

[0043] The battery management element can obtain information such as current, voltage or temperature of the battery cell 12 during operation, thereby controlling and monitoring the battery cell 12 during the cycle operation process, so as to ensure that the battery cell 12 is in a safe and stable working state.

[0044] The power distribution unit 14 includes a power distribution element 146 and a housing 141. The power distribution element 146 is disposed in the housing 141, and the housing 141 can provide certain support and protection for the power distribution element 146. The power distribution element 146 can reasonably distribute the power of the battery 100 to the various electrical components of the vehicle 1 to achieve the normal operation of the various electrical components of the vehicle 1. Optionally, the power distribution element 146 may include a voltage collection element, a current collection element, a relay, a temperature collection element, a fuse, and the like.

[0045] Integrating the battery cell 12 , the battery management system unit 13 and the power distribution unit 14 together in the box 11 of the battery 100 is beneficial to improving the integration of the battery 100 . When the battery 100 is used in the vehicle 1 , it is beneficial to improving the space utilization at the bottom of the vehicle 1 .

[0046] The mounting member 131 is provided on the housing 141, and the mounting member 131 is connected to the housing 141, that is, the battery management system unit 13 is provided on the housing 141, and the mounting member 131 can be connected to the inside or outside of the housing 141, or a part of the mounting member 131 is located inside the housing 141, and a part of the mounting member 131 is located outside the housing 141. In this way, the distance between the battery management system unit 13 and the power distribution unit 14 can be reduced, and the length of the conductive connection line between the power distribution unit 14 and the battery management element can be shortened, which is conducive to maintaining the reliability of the conductive connection line between the power distribution element 146 and the battery management element, and reducing the space occupied by it inside the battery 100. Moreover, the length of the conductive connection line between the power distribution element 146 and the battery management element is shortened, which is conducive to meeting relevant electrical requirements, improving electrical reliability, and can omit relevant electrical components, such as the acquisition control unit, which is conducive to saving space inside the battery 100 and reducing the cost of the battery 100.

[0047] In addition, the battery management system unit 13 is arranged in the shell 141, and the shell 141 can be used to provide a certain bearing capacity for the battery management system unit 13, which is beneficial to saving the installation space of the battery management system unit 13 and simplifying the installation structure of the battery management system unit 13 while achieving the fixation of the battery management system unit 13.

[0048] The distribution device 10 provided in the embodiment of the present application realizes connecting the battery management system unit 13 to the shell 141 of the distribution unit 14 by arranging the mounting member 131 of the battery management system unit 13 on the shell 141, which is beneficial to simplifying the installation structure of the battery management system unit 13, and is beneficial to reducing the distance between the distribution element 146 and the battery management element, and reducing the length of the conductive connecting line between the two to improve the reliability of the conductive connecting line. When the distribution device 10 is applied to the battery 100, it is beneficial to improve the reliability performance of the battery 100, and reduce the setting of related electrical components inside the battery 100, such as the current acquisition controller, etc., save space inside the battery 100, and reduce the production cost of the battery 100.

[0049] like Figure 3 and Figure 5 As shown, in some embodiments, the power distribution unit 14 further includes a connecting member 142 , the connecting member 142 is disposed on the housing 141 , and the mounting member 131 is connected to the connecting member 142 .

[0050] Optionally, the connector 142 may be a threaded sleeve penetrating the housing 141, so that the mounting member 131 of the battery management system unit 13 may be connected to the connector 142 by bolts or the like, which is conducive to simplifying the connection structure between the mounting member 131 and the housing 141 and facilitating the installation of the mounting member 131. Of course, the specific structure of the connector 142 may be set according to the specific shape and structure of the mounting member 131, so as to facilitate the connection between the connector 142 and the housing 141, and between the connector 142 and the mounting member 131.

[0051] like Figure 3 and Figure 7 As shown, in some embodiments, the power distribution unit 14 further includes an insulating member 143 , and the insulating member 143 is at least disposed on a side of the connecting member 142 facing the interior of the shell 141 .

[0052] Optionally, the insulating member 143 may be an insulating sleeve, which is sleeved on the connecting member 142 at one end of the connecting member 142 facing the interior of the shell 141, or, the insulating member 143 may be an insulating coating sprayed on the connecting member 142 at one end of the connecting member 142 facing the interior of the shell 141, or, the insulating member 143 may be an insulating baffle provided on the connecting member 142 facing the interior of the shell 141, etc.

[0053] It can be understood that the distribution unit 14 includes an insulating member 143, and the insulating member 143 is at least arranged on the side of the connecting member 142 facing the inside of the shell 141, which is beneficial to achieve insulation isolation between the connecting member 142 and the distribution element 146 inside the shell 141, and is beneficial to reducing the risk of short circuit between the distribution elements 146.

[0054] like Figure 5As described, in some embodiments, the power distribution unit 14 further includes a connector 144 , which is disposed in the housing 141 and electrically connected to the power distribution element 146 , and the battery management system unit 13 further includes a connecting harness, which electrically connects the battery management element and the connector 144 .

[0055] The connector 144 is arranged in the shell 141, and the battery management element is connected to the connecting harness and the connector 144. Then, the battery management element is electrically connected to the distribution element 146 through the connection between the connecting harness and the connector 144, which can further simplify the structure of the connecting harness and realize the sealing of the shell 141, which is beneficial to improving the reliability of the distribution element 146 in the shell 141.

[0056] like Figure 5 As shown, in some embodiments, the connection harness includes a harness body and a connector 132 that are electrically connected to each other, and the connector 132 is plug-connected to the connector 144 .

[0057] The connecting harness includes a harness body and a connector 132 . The connector 132 is connected to the connector 144 to realize electrical connection between the power distribution element 146 and the battery management element, making the connection more convenient and efficient.

[0058] In addition, the connection method of plugging the connecting wire harness and the connector 144 takes up little space, which is conducive to the separate setting of the distribution element 146 for high-voltage sampling and the distribution element 146 for low-voltage control inside the shell 141, which is conducive to improving the reliability performance of the distribution unit 14.

[0059] like Figure 3 and Figure 5 As shown, in some embodiments, the shell 141 includes a first shell 1411, a second shell 1412, an insulating clip 1413 and a threaded member 1414, the first shell 1411 and the second shell 1412 cover each other, the insulating clip 1413 is clip-connected to at least one of the first shell 1411 and the second shell 1412 to connect the first shell 1411 and the second shell 1412, and the threaded member 1414 connects the first shell 1411 and the second shell 1412.

[0060] The first shell 1411 and the second shell 1412 are covered with each other to form the shell 141 . In order to achieve structural stability of the shell 141 , an insulating clamp 1413 and a threaded member 1414 are provided to achieve connection between the first shell 1411 and the second shell 1412 .

[0061] The housing 141 may include a plurality of insulating clamping members 1413, which are evenly spaced around the housing 141. Exemplarily, eight insulating clamping members 1413 are provided, and four are provided on both sides of the housing 141 in the length direction.

[0062] The screw member 1414 may be a screw, a bolt, etc. When the first housing 1411 and the second housing 1412 are connected by the screw member 1414, a countersunk hole may be provided in the first housing 1411 or the second housing 1412 so that the bolt head and other structures of the bolt are located in the countersunk hole, thereby reducing the risk of interference between the screw member 1414 and the structure of the battery management system unit 13. In addition, the screw member 1414 may have a certain electrical conductivity, and the countersunk hole may also reduce the risk of the screw member 1414 electrically connecting related components and causing a short circuit of the related components.

[0063] It is understandable that the insulating clamp 1413 can be made of an insulating material, which has a lighter mass than metal parts such as bolts, while the threaded member 1414 has a higher connection strength. Therefore, the insulating clamp 1413 and the threaded member 1414 are used together to realize the connection between the first shell 1411 and the second shell 1412, which is conducive to reducing the weight of the power distribution unit 14 while ensuring the connection strength of the first shell 1411 and the second shell 1412. In addition, the insulating clamp 1413 is connected to at least one of the first shell 1411 and the second shell 1412 by clamping, and the connection method is simple and fast, which is conducive to improving the assembly efficiency of the shell 141.

[0064] Please continue reading Figure 3 and Figure 5 In some embodiments, the shell 141 has a mounting portion 1415, the mounting portion 1415 has a mounting hole 141a, the mounting portion 1415 is used to connect with the box 11 of the battery 100, the mounting portion 1415 has a first accommodating groove 141b and a second accommodating groove 141c on both sides, the mounting hole 141a connects the first accommodating groove 141b and the second accommodating groove 141c, the shell 141 has a first surface 141d, a second surface 141e and a third surface 141f, the first surface 141d and the second surface 141e are arranged opposite to each other, the third surface 141f connects the first surface 141d and the second surface 141e, the first accommodating groove 141b passes through the first surface 141d and the third surface 141f, and the second accommodating groove 141c passes through the second surface 141e and the third surface 141f.

[0065] The mounting portion 1415 is connected to the box body 11 to fix the power distribution unit 14. The mounting portion 1415 has a first accommodating groove 141b and a second accommodating groove 141c on both sides of the axial direction of the mounting hole 141a, and the first accommodating groove 141b penetrates the first surface 141d and the third surface 141f, and the second accommodating groove 141c penetrates the second surface 141e and the third surface 141f. In the process of installing the mounting portion 1415 of the housing 141 on the box body 11, the first accommodating groove 141b and the second accommodating groove 141c have a certain avoidance effect, which facilitates the installation of the mounting portion 1415 and the box body 11.

[0066] Therefore, a mounting portion 1415 is provided, and the mounting portion 1415 is provided with a mounting hole 141a, and the mounting portion 1415 and the box body 11 can be installed through the mounting hole 141a, and the two sides of the mounting portion 1415 are provided with a first accommodating groove 141b and a second accommodating groove 141c. During the installation of the mounting portion 1415 and the box body 11, the first accommodating groove 141b and the second accommodating groove 141c can be used to provide an avoidance space for the installation of the two, which is beneficial to simplify the installation structure of the shell 141 and the box body 11, and the edge connection between the shell 141 and the box body 11.

[0067] like Figure 3 and Figure 8 As shown, in some embodiments, the power distribution unit 14 further includes a wire 145 , which is electrically connected to the power distribution element 146 . The wire 145 is disposed on the inner wall of the housing 141 and between the power distribution elements 146 .

[0068] The wire 145 is electrically connected to the distribution element 146, and can be electrically connected to the battery management element, the battery cell 12, etc. outside the shell 141 through the wire 145, or the distribution elements 146 can be electrically connected through the wire 145. The wire 145 is arranged on the inner wall of the shell 141 and between the distribution elements 146, that is, the wire 145 is arranged in the space between the distribution elements 146, which is conducive to reducing the extra space inside the shell 141 occupied by the wire 145, reducing the volume of the distribution unit 14, and when the distribution device 10 is applied to the battery 100, it is conducive to improving the energy density of the battery 100.

[0069] In some embodiments, the distribution element 146 includes a current collection element, the distribution unit 14 includes a positive terminal and a negative terminal, the current collection element electrically connects the positive terminal and the negative terminal, and the current collection element, the positive terminal, and the negative terminal are used to form a high-voltage circuit with the battery cell 12.

[0070] The current collection element is electrically connected to the positive terminal and the negative terminal, and is used to form a high-voltage circuit with the positive terminal, the negative terminal and the battery cell 12. The current collection element can be directly or indirectly electrically connected to the positive terminal or the negative terminal. When the power distribution device 10 is applied to the battery 100, the current collection element is located in the high-voltage circuit inside the battery 100, which can improve the accuracy of the current collected by the current collection element and reduce the adapter wiring harness between the current collection element and the high-voltage circuit inside the battery 100. There is no need to use a separate current collection control unit, which is conducive to further simplifying the wiring harness and related structures inside the battery 100 and improving the reliability of the battery 100.

[0071] It is understandable that in order to improve the adaptability of the battery 100 to be used in different vehicles 1, installation structures of different power distribution components 146 can be reserved at reasonable positions in the housing 141 to install structures such as Hall sensors when necessary. For example, the installation position of the Hall sensor is reserved at the position of the shunt in the housing 141.

[0072] like Figure 2 As shown, the battery 100 provided according to an embodiment of the present application includes the power distribution device 10 provided in any of the above embodiments.

[0073] The battery 100 provided in the embodiment of the present application has the same technical effect as the power distribution device 10 provided in any of the above embodiments, and will not be described in detail here.

[0074] like Figure 1 and Figure 2 The vehicle 1 provided according to the embodiment of the present application includes the battery 100 provided in any of the above embodiments.

[0075] The vehicle 1 provided in the present application may be a pure electric vehicle, a hybrid electric vehicle or an extended-range vehicle, etc., and the present application does not make any special limitation.

[0076] The vehicle 1 provided in the embodiment of the present application has the same technical effect as the battery 100 provided in the embodiment of the present application, and thus will not be described in detail here.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A power distribution device for a battery, characterized in that: The power distribution device comprises: A battery management system unit, the battery management system unit comprising a mounting member and a battery management element, the battery management element being connected to the mounting member and being electrically connectable to a battery cell of the battery; A power distribution unit comprises a shell and a power distribution element, wherein the power distribution element is arranged in the shell, the mounting member is arranged in the shell, and the battery management element is electrically connected to the power distribution element.

2. The power distribution device according to claim 1, characterized in that: The power distribution unit further includes a connecting member, which is disposed on the housing, and the mounting member is connected to the connecting member.

3. The power distribution device according to claim 2, characterized in that: The power distribution unit further includes an insulating member, which is at least arranged on a side of the connecting member facing the interior of the shell.

4. The power distribution device according to claim 1, characterized in that: The power distribution unit further includes a connector, which is disposed on the housing and electrically connected to the power distribution element. The battery management system unit further includes a connecting harness, which electrically connects the battery management element and the connector.

5. The power distribution device according to claim 4, characterized in that: The connecting wire harness comprises a wire harness body and a plug-in connector which are electrically connected to each other, and the plug-in connector is plugged into the connector.

6. The power distribution device according to claim 1, characterized in that: The shell includes a first shell, a second shell, an insulating clip and a threaded part. The first shell and the second shell cover each other. The insulating clip is clipped and connected to at least one of the first shell and the second shell to connect the first shell and the second shell. The threaded part connects the first shell and the second shell.

7. The power distribution device according to claim 1, characterized in that: The shell has a mounting portion, the mounting portion has a mounting hole, the mounting portion is used to connect to the battery box, the mounting portion has a first accommodating groove and a second accommodating groove on both sides, the mounting hole connects the first accommodating groove and the second accommodating groove, the shell has a first surface, a second surface and a third surface, the first surface and the second surface are arranged opposite to each other, the third surface connects the first surface and the second surface, the first accommodating groove passes through the first surface and the third surface, and the second accommodating groove passes through the second surface and the third surface.

8. The power distribution device according to claim 1, characterized in that: The power distribution unit further includes a wire, which is electrically connected to the power distribution element. The wire is arranged on the inner wall of the shell and between the power distribution elements.

9. The power distribution device according to claim 1, characterized in that: The power distribution element includes a current collection element, the power distribution unit includes a positive terminal and a negative terminal, the current collection element electrically connects the positive terminal and the negative terminal, and the current collection element, the positive terminal and the negative terminal are used to form a high-voltage circuit with the battery cell.

10. A battery, characterized in that: The invention comprises a battery cell and the power distribution device according to any one of claims 1 to 9, wherein the battery management element is electrically connected to the battery cell of the battery.

11. A vehicle, characterized in that: Comprising the battery of claim 10, the battery is used to provide electrical energy.

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