Battery energy distribution unit, battery pack and vehicle

Abstract

The invention provides a battery energy distribution unit, a battery pack and a vehicle, and relates to the technical field of new energy battery packs. According to the battery energy distribution unit, the shell with the mounting cavity is arranged, the control panel and the electronic device assembly are arranged in the mounting cavity, the battery energy distribution unit and the battery management system are integrated in the shell conveniently, meanwhile, the connecting piece is arranged to abut against the inner bottom wall of the mounting cavity, heat dissipation is conducted on the shell through the cold plate, and the heat dissipation efficiency is improved. And meanwhile, the electronic device assembly is cooled through the connecting piece, so that the heat dissipation efficiency is improved, and the heat dissipation performance of the battery energy distribution unit and the battery management system can be further improved.

Description

Technical Field

[0001] The present application relates to new energy battery pack technology, and in particular to a battery energy distribution unit, a battery pack and a vehicle. Background Art

[0002] The battery pack has a battery energy distribution unit and a battery management system. The battery energy distribution unit is an important component in the high-voltage electrical circuit of new energy vehicles. The battery management system is an important component in new energy vehicles that monitors the operating status of the battery pack, obtains the battery pack status parameters, and effectively controls the battery pack.

[0003] At present, the battery energy distribution unit includes a shell and multiple electronic device components arranged in the shell, as well as a high-voltage electrical circuit and a low-voltage control circuit connecting the electronic device components. The battery management system includes a control board, which is electrically connected to the battery energy distribution unit. The existing technology mainly relies on heat dissipation copper busbars to dissipate heat for the electronic device components and the control board.

[0004] However, under high-current operating conditions such as fast charging or continuous acceleration and deceleration of new energy vehicles, the heat dissipation capacity of the heat dissipation copper busbar is limited, causing the temperature of electronic components and control boards to rise, affecting the service life and safety of electronic components and control boards. Summary of the invention

[0005] In view of this, the present application provides a battery energy distribution unit, a battery pack and a vehicle, which can improve the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0006] To achieve the above objectives, the battery energy distribution unit, battery pack and vehicle provided in this application adopt the following technical solutions:

[0007] In a first aspect, the present application provides a battery energy distribution unit for being arranged in a battery pack, comprising a housing, an electronic device assembly, a control board and at least one connector;

[0008] The housing is connected to a cold plate of the battery pack;

[0009] The housing has an installation cavity, and the control board is arranged in the installation cavity;

[0010] The electronic device assembly includes a main positive relay, a main negative relay and a fuse;

[0011] The main positive relay, the main negative relay and the fuse are all arranged in the installation cavity;

[0012] The control board is used in a battery management system to monitor the status parameters of the battery pack, and the control board is also used to control the on and off of a high-voltage electrical circuit and a low-voltage control circuit;

[0013] At least one of the main positive relay and the main negative relay is invertedly inserted on the control board and electrically connected to the control board;

[0014] The fuse is used to connect the positive electrode of the battery pack and is connected to the main positive relay through the connector;

[0015] Part of the connecting member abuts against the inner bottom wall of the installation cavity.

[0016] In a possible implementation, in the battery energy distribution unit provided in the present application, the end of the connector connected to the main positive relay is in the shape of a boss.

[0017] In a possible implementation, in the battery energy distribution unit provided in the present application, the boss-shaped end of the connecting member abuts against the inner bottom wall of the installation cavity on a side facing away from the main positive relay.

[0018] In a possible implementation, the battery energy distribution unit provided by the present application, the electronic device assembly further includes a shunt; the number of the connecting members is set to at least two;

[0019] One of the connecting pieces connects the shunt and the main negative relay, and the connecting piece abuts against the inner bottom wall of the mounting cavity.

[0020] In a possible implementation, in the battery energy distribution unit provided in the present application, the connecting piece connecting the shunt and the main negative relay is in the shape of a boss.

[0021] In a possible implementation, in the battery energy distribution unit provided by the present application, at least one of the main positive relay and the main negative relay includes a contact portion and a magnetic circuit portion connected to the contact portion;

[0022] The contact portion is arranged above the magnetic circuit portion, and the magnetic circuit portion is arranged toward the inner bottom wall of the installation cavity.

[0023] In a possible implementation, the battery energy distribution unit provided in the present application further includes a heat conducting member; at least one heat conducting hole is provided on the shell;

[0024] The heat conducting member is disposed between the housing and the cold plate;

[0025] The heat conducting member is configured to conduct the heat of the housing to the cold plate to dissipate heat from the housing;

[0026] The connecting member transfers heat to the heat conducting member through the heat conducting hole.

[0027] In a possible implementation, the battery energy distribution unit provided in the present application further includes an insulating pad, which is arranged between the connecting member and the heat conductive member, and the opposite sides of the insulating pad are respectively abutted against the connecting member and the heat conductive member.

[0028] In a second aspect, the present application provides a battery pack, comprising a battery pack body and the above-mentioned battery energy distribution unit; the battery pack body is connected to the battery energy distribution unit.

[0029] In a third aspect, the present application provides a vehicle, comprising a vehicle body and the above-mentioned battery pack arranged on the vehicle body.

[0030] The battery energy distribution unit provided by the present application is provided with a shell having an installation cavity, and the control board and the electronic device assembly are both arranged in the installation cavity. The electronic device assembly is electrically connected to the control board. The control board is used for the battery management system to monitor the state parameters of the battery pack. The control board is also used to control the opening and closing of the high-voltage electrical circuit and the low-voltage control circuit, so as to realize the integration of the new energy vehicle battery energy distribution unit and the battery management system in the shell. At the same time, the main positive relay and the main negative relay are arranged in an inverted manner on the control board, and the main positive relay and the fuse are connected by arranging a connector, and some connectors are abutted against the inner bottom wall of the installation cavity. In this way, the cold plate of the battery pack is used to dissipate the heat of the entire shell, which is equivalent to dissipating the heat of the electronic device assembly through the connector, thereby improving the heat dissipation efficiency, and thus being able to improve the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0031] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the technical solutions provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to illustrate and explain the present application, and the present application is not limited to the specific implementation methods described below.

[0033] Figure 1 A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided in an embodiment of the present application;

[0034] Figure 2 for Figure 1 A schematic diagram of the structure of the battery energy distribution unit;

[0035] Figure 3 for Figure 2 A schematic diagram of a portion of the structure of the battery energy distribution unit;

[0036] Figure 4 To express Figure 3 Schematic diagram of some structures;

[0037] Figure 5 To express Figure 4 Schematic diagram of some structures of the connecting components;

[0038] Figure 6 for Figure 2 Schematic diagram of the explosion structure;

[0039] Figure 7 It is a schematic diagram showing the partial explosion structure of the shell and the heat conducting component.

[0040] Description of reference numerals:

[0041] 10. Installation cavity;

[0042] 100, shell; 110, first shell; 111, first clip; 112, heat conducting hole; 120, second shell; 121, second clip; 200, electronic device assembly; 210, main positive relay; 211, contact part; 212, magnetic circuit part; 220, main negative relay; 230, connector; 240, fuse; 250, connector; 260, shunt; 300, control board; 400, heat conducting part; 500, cold plate; 600, connecting assembly; 700, battery pack body; 800, insulating pad.

[0043] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0045] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between 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.

[0046] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] In the description of the embodiments of the present application, “plurality” means two or more than two, unless otherwise precisely and specifically specified.

[0048] The terms "first", "second", "third", "fourth", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0049] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0050] As mentioned in the background technology, in the related technology, the battery energy distribution unit and battery management system of the new energy vehicle battery pack will generate a large amount of heat when working. This heat will react on the electronic devices inside, causing the electronic devices to increase in temperature or even be damaged, affecting the normal operation of the electronic devices.

[0051] In the conventional setting method, a heat dissipation copper bar is set on the control board and the electronic device assembly to dissipate heat by air convection. However, the heat dissipation efficiency of the heat dissipation copper bar is low and the heat dissipation capacity is limited, and the heat dissipation effect is not good. When the new energy vehicle is under high current conditions such as fast charging or continuous acceleration and deceleration, the temperature of the electronic device assembly and the control board will continue to rise, affecting the service life and safety of the electronic device assembly and the control board.

[0052] Based on the above technical problems, the embodiment of the present application provides a battery energy distribution unit, a battery pack and a vehicle. In the technical solution, a shell with an installation cavity is provided, and the control board and the electronic device assembly are both provided in the installation cavity. The electronic device assembly is electrically connected to the control board. The control board is used for the battery management system to monitor the state parameters of the battery pack. The control board is also used to control the opening and closing of the high-voltage electrical circuit and the low-voltage control circuit, so as to realize the integration of the new energy vehicle battery energy distribution unit and the battery management system in the shell. At the same time, the main positive relay and the main negative relay are provided in an inverted manner and inserted on the control board, and the main positive relay and the fuse are connected by providing a connector, and some connectors are abutted against the inner bottom wall of the installation cavity. In this way, the cold plate of the battery pack is used to dissipate the heat of the entire shell, which is equivalent to dissipating the heat of the electronic device assembly through the connector, thereby improving the heat dissipation efficiency, and thus improving the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0053] It should be noted that Figures 1 to 7 A schematic diagram of the battery energy distribution unit, the battery pack and the components in the vehicle is shown. The specific structures of the battery energy distribution unit, the battery pack and the other components in the vehicle are not limited to Figures 1 to 7 of examples.

[0054] The present application is described in detail below with reference to the accompanying drawings and specific embodiments:

[0055] Reference Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present application provides a battery energy distribution unit for being arranged in a battery pack, including a housing 100, an electronic device assembly 200, a control board 300 and at least one connector 250.

[0056] The housing 100 is connected to the top surface of the cold plate 500 of the battery pack. In the related art, a battery pack has multiple battery cells (not shown in the figure). The battery cells will generate a lot of heat when working. In order to dissipate the heat of the battery cells in time, a cold plate 500 will be laid at the bottom of the battery pack. The cold plate 500 can effectively remove the heat of the battery cells through physical contact, so that the battery cells maintain the optimal temperature. The embodiment of the present application does not limit the specific structure of the cold plate 500.

[0057] The housing 100 has a mounting cavity 10 therein, and the control board 300 is disposed in the mounting cavity 10 .

[0058] The electronic device assembly 200 includes at least one of a main positive relay 210, a main negative relay 220 and a fuse 240 disposed in the mounting cavity 10, and at least one of the main positive relay 210 and the main negative relay 220 is used to electrically connect to the high-voltage electrical circuit and the low-voltage control circuit.

[0059] The control board 300 is used in a battery management system to monitor the status parameters of the battery pack, and the control board 300 is also used to control the on and off of the high-voltage electrical circuit and the low-voltage control circuit.

[0060] Through the above configuration, the battery management system can be integrated into the battery energy distribution unit, with centralized functions to facilitate overall installation.

[0061] At least one of the main positive relay 210 and the main negative relay 220 is inserted in an inverted manner on the control board 300 and is electrically connected to the control board 300 .

[0062] The fuse 240 is used to connect the positive electrode of the battery pack and is connected to the main positive relay 210 through the connector 250 .

[0063] The end of the connecting member 250 connected to the main positive relay 210 is in a boss shape, and the side of the connecting member 250 facing away from the main positive relay 210 abuts against the inner bottom wall of the installation cavity 10 .

[0064] When implementing it, refer to Figure 3 , Figure 4 and Figure 6 As shown, the connector 250 is connected to the magnetic circuit portion 212 of the main positive relay 210, and the end of the connector 250 connected to the main positive relay 210 is in the shape of a boss, and the bottom of the boss-shaped connector 250 abuts against the inner bottom wall of the mounting cavity 10. It can be understood here that the magnetic circuit portion 212 of the main positive relay 210, as the conductive end of the main positive relay 210, will generate a large amount of heat during operation. By providing the boss-shaped connector 250, on the one hand, the electrical connection between the main positive relay 210 and the fuse 240 is achieved, and on the other hand, the boss-shaped end of the connector 250 can quickly absorb the heat generated by the magnetic circuit portion 212 of the main positive relay 210, and conduct this part of the heat to the housing 100, which is equivalent to improving the heat conduction efficiency between the magnetic circuit portion 212 and the housing 100, thereby achieving rapid heat dissipation of the magnetic circuit portion 212 of the main positive relay 210.

[0065] In the above embodiment, the main positive relay 210 and the main negative relay 220 are inserted in an inverted manner on the control board 300 and are electrically connected to the control board 300, which can facilitate the connection between the main positive relay 210 and the main negative relay 220 and the control board 300, and further facilitate integration. At the same time, the main positive relay 210 and the main negative relay 220 are inserted in an inverted manner on the control board 300, so that the conductive ends of the main positive relay 210 and the main negative relay 220 can be set toward the ground, which can prevent the condensation on the inner wall of the battery pack from dripping onto its conductive ends in an environment with a large temperature difference, affecting normal operation, and having a certain protective effect on the main positive relay 210 and the main negative relay 220.

[0066] In this way, the cold plate 500 on the battery pack is used to dissipate heat from the shell 100, and at the same time, the connector 250 abuts against the inner bottom wall of the shell 100, thereby improving the heat dissipation efficiency of the connector 250, which is equivalent to dissipating heat to the battery energy distribution unit and the battery management system at the same time, and indirectly dissipating heat to the electronic device assembly 200 and the control board 300 therein, thereby improving the heat dissipation efficiency, and further improving the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0067] In a specific implementation, the connecting member 250 may be a connecting copper bar or a connecting aluminum bar.

[0068] In a possible implementation, one of the main positive relay 210 and the main negative relay 220 includes a contact portion 211 and a magnetic circuit portion 212 connected to the contact portion 211 .

[0069] The contact portion 211 is disposed above the magnetic circuit portion 212 , and the magnetic circuit portion 212 faces the inner bottom wall of the installation cavity 10 .

[0070] Here, the magnetic circuit portion 212 is the conductive end of the relay. The conductive end will generate heat due to the existence of resistance during operation. It can be understood that the magnetic circuit portion 212 is set downward and abutted against the inner bottom wall of the installation cavity 10, so that the heat generated by the magnetic circuit portion 212 can be quickly conducted to the shell 100, and then the shell 100 is cooled, which is equivalent to quickly dissipating the heat of the magnetic circuit portion 212.

[0071] Furthermore, the electronic device assembly 200 also includes a shunt 260, and the number of connectors 250 is set to at least two. The connector 250 connects the shunt 260 and the main negative relay 220, and the shunt 260 is electrically connected to the negative pole of the battery pack through the connector 250. In order to further improve the heat dissipation efficiency, each connector 250 is set to a boss shape at the connection position with the main negative relay 220, the shunt 260, etc., so as to increase the contact area with the shell 100 and further realize rapid heat conduction and heat dissipation.

[0072] In one possible implementation, refer to Figure 4 and Figure 5 As shown, at least one connection assembly 600 is also included, and each of the main positive relay 210 and the main negative relay 220 has at least one plug-in component 230 .

[0073] The connection assembly 600 is connected to the control board 300 , and the connector 230 is used to be inserted into the connection assembly 600 so as to electrically connect the main positive relay 210 and the main negative relay 220 to the control board 300 .

[0074] In a specific implementation, the connecting component 600 includes a connecting portion 610 connected to the control board 300 and a clamping portion 620 arranged on the connecting portion 610. In the relevant technical field, the connecting portion 610 can be electrically connected to the control board 300 by welding, and the clamping portion 620 has at least two elastic sheets 621 arranged opposite to each other, and the connector 230 can be plugged between the two elastic sheets 621. On the one hand, the connector 230 can be electrically connected to the control board 300 through the elastic sheets 621 and the connecting portion 610. On the other hand, the two elastic sheets 621 arranged opposite to each other can clamp the connector 230 tightly, thereby improving the connection accuracy and stability.

[0075] Of course, in order to improve the connection stability, the number of the connectors 230 on the main positive relay 210 and the main negative relay 220 is set to at least two, and the connecting assembly 600 corresponds to each connector 230 .

[0076] In the above embodiment, the main positive relay 210 and the main negative relay 220 are related technologies in this field. The positive relay and the main negative relay 220 are electrically connected to the high-voltage electrical circuit and the low-voltage control circuit to control the opening and closing of the high-voltage electrical circuit and the low-voltage control circuit. The connecting component 600 is arranged on the control board 300. The main positive relay 210 and the main negative relay 220 are plugged into the connecting component 600 through the plug-in component 230 to electrically connect the main positive relay 210 and the main negative relay 220 to the control board 300, eliminating many wiring harnesses for electrically connecting the main positive relay 210 and the main negative relay 220 to the control board 300, making it easy to install and highly integrated.

[0077] The Battery Management System (BMS), also known as BMS, is an intelligent management and maintenance system for each battery cell, monitoring the battery status, preventing the battery from overcharging and over-discharging, and thus extending the battery life.

[0078] The Battery Energy Distribution Unit (BDU), also known as BDU, controls the power-on and power-off process, pre-charging process, and charging process of the high-voltage electrical circuit. Whether the characteristic parameters of the BDU product meet the qualified conditions has an important impact on the service life, control strategy, and high-voltage electrical safety of the entire vehicle.

[0079] In the above embodiment, a BDU with a BMS function, namely a BDMU (Battery Energy Distribution Management Unit), is formed by integrating the BMS and the BDU.

[0080] In addition, by providing a connecting component 600, the electronic device component 200 and the control board 300 are plugged in. In this way, many wiring harnesses for electrically connecting the electronic device component 200 and the control board 300 can be omitted, thereby facilitating the assembly of the electronic device component 200 and the control board 300. In addition, during later maintenance, the omission of many wiring harnesses can facilitate maintenance.

[0081] In a possible implementation manner, in order to improve the heat conduction and heat dissipation efficiency of the housing 100 , a heat conducting member 400 is further included.

[0082] The heat conducting member 400 is disposed between the bottom side of the housing 100 and the top surface of the cold plate 500 , and two opposite sides of the heat conducting member 400 are respectively in contact with the housing 100 and the cold plate 500 .

[0083] The heat conducting member 400 is configured to conduct the heat of the housing 100 to the cold plate 500 to dissipate heat from the housing 100 .

[0084] In the above embodiment, the heat generated in the housing 100 first heats the housing 100 through heat conduction, and then the housing 100 conducts the heat to the cold plate 500 through the heat conducting member 400, thereby achieving heat dissipation of the housing 100. The heat conducting member 400 can improve the heat conduction efficiency between the housing 100 and the cold plate 500, thereby improving the heat dissipation efficiency of the housing 100.

[0085] In a possible implementation, in order to facilitate processing and assembly of the housing 100 , the housing 100 includes a first shell 110 and a second shell 120 .

[0086] The first shell 110 is connected to the cold plate 500 , and the second shell 120 is covered on the first shell 110 . The first shell 110 and the second shell 120 are jointly arranged to form a mounting cavity 10 .

[0087] In this way, by providing the first shell 110 and the second shell 120 in a cover configuration, the installation cavity 10 can be opened and closed more conveniently, thereby facilitating the installation and maintenance of components inside the installation cavity 10 and improving the installation efficiency of the housing 100 .

[0088] One of the first housing 110 and the second housing 120 has at least one first clamping member 111 , and the other has at least one second clamping member 121 .

[0089] The first clamping member 111 and the second clamping member 121 are clamped in a one-to-one correspondence.

[0090] In this way, by the clamping of the first clamping member 111 and the second clamping member 121, the first shell 110 and the second shell 120 can be quickly connected in a detachable manner, thereby improving the assembly efficiency of the housing 100. In a specific implementation, one of the first clamping member 111 and the second clamping member 121 is a clamping ring, and the other is a clamping joint, and the clamping joint is inserted into the clamping ring. Of course, there can also be another form of realizing the one-to-one clamping of the first clamping member 111 and the second clamping member 121, and the embodiment of the present application does not limit this.

[0091] Figure 2 and Figure 4 As shown in the figure, the first housing 110 has a plurality of first clamping members 111, which are clamping joints or clamping rings, and the second housing 120 has a plurality of second clamping members 121, which are clamping rings or clamping joints.

[0092] In one possible implementation, refer to Figure 5 As shown, at least one heat conducting hole 112 is formed on the side of the first housing 110 facing the cold plate 500 .

[0093] The connecting member 250 transfers heat to the heat conducting member 400 through the heat conducting hole 112 .

[0094] Here, by setting the heat conducting hole 112, the heat conducting component 400 can abut against the connecting component 250 through the heat conducting hole 112, and the heat on the connecting component 250 will first be transferred to the heat conducting component 400, and then transferred to the cold plate 500 for elimination. Here, the heat conducting hole 112 can realize the direct contact between the connecting component 250 and the heat conducting component 400, which can further improve the heat conduction efficiency and thus improve the heat dissipation effect of the connecting component 250.

[0095] In the above embodiment, the heat conducting member 400 is at least one of a heat conducting pad and a heat conducting gel. The heat conducting pad has good heat conductivity and high level of pressure resistance, and has good flexibility, and can be well fitted with the connector 250, thereby achieving better heat conduction. The heat conducting gel has good thixotropy, can fill larger gaps, has a higher thermal conductivity than the heat conducting pad, and also has a certain insulation, which can improve the safety of the connector 250. The choice can be made according to actual needs.

[0096] In a possible embodiment, in order to further improve the safety of the connector 250 and prevent a short circuit, an insulating pad 800 is also included. The insulating pad 800 is arranged between the connector 250 and the heat conductor 400, and the opposite sides of the insulating pad 800 are respectively in contact with the connector 250 and the heat conductor 400.

[0097] The insulating pad 800 may be an insulating rubber pad with a thickness of 2 mm to 6 mm. Under the premise of not affecting heat conduction, the connector 250 can be well protected from short circuit and the safe use of the connector 250 can be protected. Here, the thickness of the insulating pad 800 can be selected according to actual needs, and the embodiment of the present application does not impose too many restrictions on this.

[0098] An embodiment of the present application also provides a battery pack, including a battery pack body 700 and the above-mentioned battery energy distribution unit disposed in the battery pack body 700 .

[0099] Among them, the specific structure of the battery energy distribution unit has been explained above and will not be repeated here. The battery pack body 700 is the existing technology in the relevant technical field. It can be understood that the battery energy distribution unit provided in this application can be applied to any type of battery pack body 700.

[0100] By using the above-mentioned battery energy distribution unit in the battery pack, the battery energy distribution unit can achieve better heat dissipation, ensuring the normal operation of the components. At the same time, the integration of the components in the battery pack can be improved, and the space inside the battery pack can be fully utilized, thereby saving more space for installing battery cells to expand the capacity of the battery pack body 700.

[0101] An embodiment of the present application also provides a vehicle, comprising a vehicle body and the above-mentioned battery pack disposed on the vehicle body.

[0102] The implementation principle of a battery energy distribution unit, a battery pack and a vehicle provided in an embodiment of the present application is as follows: by providing a housing 100 with an installation cavity 10, a control board 300 and an electronic device assembly 200 are both provided in the installation cavity 10, the electronic device assembly 200 is electrically connected to the control board 300, the control board 300 is used for a battery management system to monitor the state parameters of the battery pack, and the control board 300 is also used to control the opening and closing of a high-voltage electrical circuit and a low-voltage control circuit, so as to realize that the battery energy distribution unit of a new energy vehicle and the battery management system are integrated in the housing 100, and at the same time, a main positive relay 210 and a main negative relay 220 are provided in an inverted manner and inserted on the control board 300, and the main positive relay 210 and the fuse 240 are connected by providing a connector 250, and part of the connector 250 is in contact with the inner bottom wall of the housing 100, so that the cold plate of the battery pack is used to dissipate heat for the entire housing 100, which is equivalent to dissipating heat for the electronic device assembly 200 through the connector 250, thereby improving the heat dissipation efficiency, and thus improving the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0103] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein.

[0104] The embodiments of the present application are intended to cover any variation, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the technical field not disclosed in the present application. The description and embodiments are only to be regarded as exemplary, and the true scope and spirit of the present application are indicated by the claims.

[0105] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A battery energy distribution unit, used to be arranged in a battery pack, characterized in that: include: A housing (100), an electronic device assembly (200), a control board (300) and at least one connecting member (250); The housing (100) is connected to a cold plate (500) of the battery pack; The housing (100) has a mounting cavity (10) therein, and the control board (300) is arranged in the mounting cavity (10); The electronic device assembly (200) includes a main positive relay (210), a main negative relay (220) and a fuse (240); The main positive relay (210), the main negative relay (220) and the fuse (240) are all arranged in the installation cavity (10); The control board (300) is used in a battery management system to monitor the state parameters of the battery pack, and the control board (300) is also used to control the on and off of a high-voltage electrical circuit and a low-voltage control circuit; At least one of the main positive relay (210) and the main negative relay (220) is inserted in an inverted manner on the control board (300) and is electrically connected to the control board (300); The fuse (240) is used to connect the positive electrode of the battery pack and is connected to the main positive relay (210) through the connector (250); Part of the connecting piece (250) abuts against the inner bottom wall of the installation cavity (10).

2. The battery energy distribution unit according to claim 1, characterized in that: The end of the connecting piece (250) connected to the main positive relay (210) is in a boss shape.

3. The battery energy distribution unit according to claim 2, characterized in that: The end portion of the connecting member (250) in the form of a boss abuts against the inner bottom wall of the installation cavity (10) on a side facing away from the main positive relay (210).

4. The battery energy distribution unit according to claim 1, characterized in that: The electronic device assembly (200) further comprises a shunt (260); the number of the connecting members (250) is set to at least two; One of the connecting pieces (250) connects the shunt (260) and the main negative relay (220), and the connecting piece (250) abuts against the inner bottom wall of the installation cavity (10).

5. The battery energy distribution unit according to claim 4, characterized in that: The connecting member (250) connecting the shunt (260) and the main negative relay (220) is in the shape of a boss.

6. The battery energy distribution unit according to any one of claims 1 to 5, characterized in that: At least one of the main positive relay (210) and the main negative relay (220) includes a contact portion (211) and a magnetic circuit portion (212) connected to the contact portion (211); The contact portion (211) is arranged above the magnetic circuit portion (212), and the magnetic circuit portion (212) is arranged toward the inner bottom wall of the installation cavity (10).

7. The battery energy distribution unit according to any one of claims 1 to 5, characterized in that: It also includes a heat conducting member (400); the housing (100) is provided with at least one heat conducting hole (112); The heat conducting member (400) is arranged between the housing (100) and the cold plate (500); The heat conducting member (400) is configured to conduct the heat of the housing (100) to the cold plate (500) to dissipate heat from the housing (100); The connecting member (250) transfers heat to the heat conducting member (400) through the heat conducting hole (112).

8. The battery energy distribution unit according to claim 7, characterized in that: It also includes an insulating pad (800), which is arranged between the connecting member (250) and the heat conducting member (400), and the two opposite sides of the insulating pad (800) are respectively in contact with the connecting member (250) and the heat conducting member (400).

9. A battery pack, characterized in that: It comprises a battery pack body (700) and a battery energy distribution unit as claimed in any one of claims 1 to 8; the battery pack body (700) is connected to the battery energy distribution unit.

10. A vehicle, characterized in that: The invention comprises a vehicle body and the battery pack as claimed in claim 9 arranged on the vehicle body.

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