Battery energy distribution unit, battery pack, and vehicle

Abstract

The present application relates to the technical field of new energy battery packs, and provides a battery energy distribution unit, a battery pack, and a vehicle. In the battery energy distribution unit provided in the present application, by providing a housing having a mounting cavity, and arranging both a control board and an electronic device assembly in the mounting cavity, the battery energy distribution unit and a battery management system are conveniently integrated in the housing; in addition, by providing a connecting member to abut against the inner bottom wall of the mounting cavity, using a cold plate to dissipate heat from the housing, and dissipating heat from the electronic device assembly by means of the connecting member, the heat dissipation efficiency is improved, thereby improving the heat dissipation performance of the battery energy distribution unit and the battery management system.

Description

A battery energy distribution unit, a battery pack, and a vehicle

[0001] This application claims priority to Chinese Patent Application No. 202411888713.6, filed on December 20, 2024, entitled “A Battery Energy Distribution Unit, Battery Pack and Vehicle”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to new energy battery pack technology, and more particularly to a battery energy distribution unit, a battery pack, and a vehicle. Background Technology

[0003] The battery pack contains 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, while 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 manages the battery pack.

[0004] Currently, the battery energy distribution unit includes a housing and multiple electronic components housed within the housing, as well as high-voltage electrical circuits and low-voltage control circuits connecting the electronic components. The battery management system includes a control board, which is electrically connected to the battery energy distribution unit. In the prior art, heat dissipation copper busbars are mainly used to dissipate heat from the electronic components and the control board.

[0005] However, under high-current conditions such as fast charging or continuous acceleration and deceleration of new energy vehicles, the heat dissipation capacity of the copper busbar is limited, which leads to an increase in temperature of electronic components and control boards, affecting the service life and safety of electronic components and control boards. Summary of the Invention

[0006] In view of this, this 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.

[0007] To achieve the above objectives, the battery energy distribution unit, battery pack, and vehicle provided in this application adopt the following technical solutions:

[0008] In a first aspect, this application provides a battery energy distribution unit for installation within a battery pack, comprising a housing, electronic components, a control board, and at least one connector.

[0009] The housing is connected to the cold plate of the battery pack;

[0010] The housing has a mounting cavity, and the control board is disposed within the mounting cavity;

[0011] The electronic device assembly includes a main positive relay, a main negative relay, and a fuse;

[0012] The main positive relay, the main negative relay, and the fuse are all disposed within the mounting cavity;

[0013] The control board is used in the battery management system to monitor the status parameters of the battery pack, and the control board is also used to control the on / off state of the high-voltage electrical circuit and the low-voltage control circuit.

[0014] At least one of the main positive relay and the main negative relay is inserted inverted on the control board and is electrically connected to the control board;

[0015] The fuse is used to connect to the positive terminal of the battery pack and is connected to the main positive relay via the connector;

[0016] Part of the connector abuts against the inner bottom wall of the mounting cavity.

[0017] In one possible implementation, the battery energy distribution unit provided in this application has a boss-shaped end where the connector is connected to the main positive relay.

[0018] In one possible implementation, the battery energy distribution unit provided in this application has a boss-shaped end on the connector that abuts against the inner bottom wall of the mounting cavity on the side opposite to the main positive relay.

[0019] In one possible implementation, the battery energy distribution unit provided in this application further includes a shunt in the electronic device assembly; the number of the connectors is set to at least two.

[0020] One of the connectors connects the shunt and the main negative relay, and the connector abuts against the inner bottom wall of the mounting cavity.

[0021] In one possible implementation, the battery energy distribution unit provided in this application has a boss-shaped connector connecting the shunt and the main negative relay.

[0022] In one possible implementation, the battery energy distribution unit provided in this application includes at least one of the main positive relay and the main negative relay, which comprises a contact portion and a magnetic circuit portion connected to the contact portion.

[0023] The contact portion is disposed above the magnetic circuit portion, and the magnetic circuit portion is disposed facing the inner bottom wall of the mounting cavity.

[0024] In one possible implementation, the battery energy distribution unit provided in this application further includes a heat-conducting component; at least one heat-conducting hole is provided on the housing;

[0025] The heat-conducting component is disposed between the housing and the cold plate;

[0026] The heat-conducting element is configured to conduct heat from the housing to the cold plate to dissipate heat from the housing;

[0027] The connector transfers heat to the heat-conducting component through the heat-conducting hole.

[0028] In one possible implementation, the battery energy distribution unit provided in this application further includes an insulating pad, which is disposed between the connector and the heat-conducting element, and the opposite sides of the insulating pad abut against the connector and the heat-conducting element, respectively.

[0029] Secondly, this application provides a battery pack, including a battery pack body and the aforementioned battery energy distribution unit; the battery pack body is connected to the battery energy distribution unit.

[0030] Thirdly, this application provides a vehicle including a vehicle body and the aforementioned battery pack disposed on the vehicle body.

[0031] The battery energy distribution unit provided in this application integrates the control board and electronic components within a housing with a mounting cavity. The electronic components are electrically connected to the control board, which is used by the battery management system to monitor the battery pack's status parameters. The control board also controls the opening and closing of high-voltage and low-voltage control circuits, thus integrating the new energy vehicle battery energy distribution unit and battery management system within the housing. Simultaneously, a main positive relay and a main negative relay are inverted and inserted onto the control board, connected to a fuse via connectors. Some of these connectors abut against the inner bottom wall of the mounting cavity. This utilizes the battery pack's cooling plate to dissipate heat from the entire housing, effectively cooling the electronic components through the connectors, thus improving heat dissipation efficiency and consequently enhancing the heat dissipation performance of both the battery energy distribution unit and the battery management system. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0034] Figure 2 is a schematic diagram of the battery energy distribution unit in Figure 1;

[0035] Figure 3 is a partial structural schematic diagram of the battery energy distribution unit in Figure 2;

[0036] Figure 4 is a schematic diagram showing part of the structure in Figure 3;

[0037] Figure 5 is a partial structural schematic diagram of the connecting components in Figure 4;

[0038] Figure 6 is a schematic diagram of the exploded structure in Figure 2;

[0039] Figure 7 is a partial exploded structural diagram showing the shell and heat-conducting components.

[0040] Explanation of reference numerals in the attached drawings: 10, mounting cavity; 100, housing; 110, first outer shell; 111, first snap-fit ​​component; 112, heat-conducting hole; 120, second outer shell; 121, second snap-fit ​​component; 200, electronic component assembly; 210, main positive relay; 211, contact part; 212, magnetic circuit part; 220, main negative relay; 230, plug-in component; 240, fuse; 250, connector; 260, shunt; 300, control board; 400, heat-conducting component; 500, cold plate; 600, connecting assembly; 700, battery pack body; 800, insulating pad. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are partial embodiments of the present invention, not complete embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. All other obtained embodiments are within the scope of protection of the present invention. In the absence of conflict, the following embodiments and features can be combined with each other.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the communication between the internal cavities of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] It should be noted that in the description of this invention, the terms "first," "second," and "third" are used only for convenience in describing different cavities and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," or "third" may explicitly or implicitly include at least one of those features.

[0045] As mentioned in the background section, in related technologies, the battery energy distribution unit and battery management system of the battery pack of new energy vehicles generate a lot of heat when they are working. This heat will have a reaction effect on the electronic components inside, causing the temperature of the electronic components to rise or even be damaged, affecting the normal operation of the electronic components.

[0046] In conventional setups, heat dissipation copper busbars are installed on the control board and electronic components to dissipate heat through air convection. However, the heat dissipation copper busbars have low heat dissipation efficiency and limited heat dissipation capacity, resulting in poor heat dissipation. When new energy vehicles are in high-current conditions such as fast charging or continuous acceleration and deceleration, the temperature of the electronic components and control board will continue to rise, affecting the service life and safety of the electronic components and control board.

[0047] Based on the aforementioned technical problems, this application provides a battery energy distribution unit, a battery pack, and a vehicle. In this solution, a housing with a mounting cavity is provided, within which the control board and electronic components are housed. The electronic components are electrically connected to the control board, which is used for the battery management system to monitor the battery pack's status parameters. The control board also controls the opening and closing of high-voltage electrical circuits and low-voltage control circuits, thereby integrating the new energy vehicle battery energy distribution unit and battery management system within the housing. Simultaneously, a main positive relay and a main negative relay are inverted and inserted onto the control board, and a connector connects the main positive relay and a fuse. Part of the connector abuts against the inner bottom wall of the mounting cavity. This utilizes the battery pack's cooling plate to dissipate heat from the entire housing, effectively cooling the electronic components through the connector, thus improving heat dissipation efficiency and consequently enhancing the heat dissipation performance of the battery energy distribution unit and battery management system.

[0048] It should be noted that Figures 1 to 7 show simplified schematic diagrams of the battery energy distribution unit, battery pack, and other components in the vehicle. The specific structure of the battery energy distribution unit, battery pack, and other components in the vehicle is not limited to the examples shown in Figures 1 to 7.

[0049] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the present invention.

[0050] Referring to Figures 1, 2 and 3, an embodiment of this application provides a battery energy distribution unit for installation within a battery pack, including a housing 100, an electronic component 200, a control board 300 and at least one connector 250.

[0051] The housing 100 is connected to the top surface of the cold plate 500 of the battery pack. In related technologies, the battery pack contains multiple battery cells (not shown in the figure). The battery cells generate a lot of heat when they are working. In order to dissipate heat from the battery cells in a timely manner, a cold plate 500 is laid at the bottom of the battery pack. The cold plate 500 can effectively remove the heat from the battery cells through physical contact, thereby keeping the battery cells at the optimal temperature. The specific structure of the cold plate 500 is not limited in the embodiments of this application.

[0052] The housing 100 has a mounting cavity 10, and the control board 300 is disposed in the mounting cavity 10.

[0053] 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. At least one of the main positive relay 210 and the main negative relay 220 is used for electrical connection to a high-voltage electrical circuit and a low-voltage control circuit.

[0054] The control board 300 is used in the battery management system to monitor the status parameters of the battery pack, and the control board 300 is also used to control the on / off of the high-voltage electrical circuit and the low-voltage control circuit.

[0055] By using the above setup method, the battery management system can be integrated into the battery energy distribution unit, which centralizes the functions and facilitates overall installation.

[0056] 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.

[0057] The fuse 240 is used to connect to the positive terminal of the battery pack and is connected to the main positive relay 210 via the connector 250.

[0058] The end of the connector 250 that connects to the main positive relay 210 is in the shape of a boss, and the side of the connector 250 facing away from the main positive relay 210 abuts against the inner bottom wall of the mounting cavity 10.

[0059] In specific implementation, referring to Figures 3, 4, and 6, the connector 250 is connected to the magnetic circuit portion 212 of the main positive relay 210. The end of the connector 250 connected to the main positive relay 210 is in the shape of a boss. The bottom of the boss-shaped connector 250 abuts against the inner bottom wall of the mounting cavity 10. It can be understood that the magnetic circuit portion 212 of the main positive relay 210, as the conductive end of the main positive relay 210, generates a large amount of heat during operation. By setting the boss-shaped connector 250, on the one hand, the main positive relay 210 is electrically connected to the fuse 240. 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 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.

[0060] In the above embodiment, the main positive relay 210 and the main negative relay 220 are installed upside down on the control board 300 and electrically connected to it. This facilitates the connection between the main positive relay 210 and the main negative relay 220 and the control board 300, further simplifying integration. Simultaneously, the upside-down installation of the main positive relay 210 and the main negative relay 220 on the control board 300 ensures that their conductive ends face the ground. This prevents condensation from dripping onto their conductive ends in environments with large temperature differences, thus protecting the main positive relay 210 and the main negative relay 220 from affecting normal operation.

[0061] In this way, the cold plate 500 on the battery pack dissipates heat from the housing 100, while the connector 250 abuts against the inner bottom wall of the housing 100, improving the heat dissipation efficiency of the connector 250. This is equivalent to simultaneously dissipating heat from the battery energy distribution unit and the battery management system, indirectly dissipating heat from the electronic component 200 and the control board 300, thus improving the heat dissipation efficiency and thereby enhancing the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0062] In a practical implementation, the connector 250 can be a copper busbar or an aluminum busbar.

[0063] In one 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.

[0064] The contact portion 211 is disposed above the magnetic circuit portion 212, which faces the inner bottom wall of the mounting cavity 10.

[0065] Here, the magnetic circuit section 212 is the conductive terminal of the relay. During operation, the conductive terminal generates heat due to the resistance. It is understandable that by setting the magnetic circuit section 212 downward and abutting against the inner bottom wall of the mounting cavity 10, the heat generated by the magnetic circuit section 212 can be quickly conducted to the housing 100, and then the housing 100 is cooled, which is equivalent to the magnetic circuit section 212 being cooled quickly.

[0066] Furthermore, the electronic component assembly 200 also includes a shunt 260, and the number of connectors 250 is set to at least two. The connectors 250 connect the shunt 260 and the main negative relay 220, and the shunt 260 is electrically connected to the negative terminal of the battery pack through the connectors 250. In order to further improve the heat dissipation efficiency, each connector 250 is provided with a boss at the connection position with the main negative relay 220, the shunt 260, etc., to increase the contact area with the housing 100 and further realize rapid heat conduction and heat dissipation.

[0067] In one possible implementation, as shown in Figures 4 and 5, at least one connection component 600 is also included, with at least one connector 230 on each of the main positive relay 210 and the main negative relay 220.

[0068] The connection assembly 600 is connected to the control board 300, and the plug-in 230 is used to insert into the connection assembly 600 so that the main positive relay 210 and the main negative relay 220 are electrically connected to the control board 300.

[0069] In a specific implementation, the connecting assembly 600 includes a connecting portion 610 connected to the control board 300 and a clamping portion 620 disposed on the connecting portion 610. In related technical fields, the connecting portion 610 can be electrically connected to the control board 300 by welding. The clamping portion 620 has at least two oppositely arranged elastic pieces 621. The plug-in 230 can be inserted between the two elastic pieces 621. On the one hand, the plug-in 230 can be electrically connected to the control board 300 through the elastic pieces 621 and the connecting portion 610. On the other hand, the two oppositely arranged elastic pieces 621 can clamp the plug-in 230 tightly, improving the connection accuracy and stability.

[0070] Of course, in order to improve connection stability, the number of connectors 230 on the main positive relay 210 and the main negative relay 220 is set to at least two, and the connection component 600 corresponds to each connector 230.

[0071] In the above embodiments, 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 connection component 600 is disposed on the control board 300. The main positive relay 210 and the main negative relay 220 are plugged into the connection component 600 through the plug-in 230 so that the main positive relay 210 and the main negative relay 220 are electrically connected to the control board 300. This eliminates the need for many wiring harnesses for the main positive relay 210 and the main negative relay 220 to be electrically connected to the control board 300, making it easy to install and with a high degree of integration.

[0072] A Battery Management System (BMS) is used for the intelligent management and maintenance of each battery cell, monitoring the battery status, preventing overcharging and over-discharging, and thus extending the battery's lifespan.

[0073] The Battery Energy Distribution Unit (BDU) controls the power-on / off, pre-charge, and charging processes of the high-voltage electrical circuit. Whether the characteristic parameters of the BDU meet the qualification requirements has a significant impact on the service life of the entire vehicle, the control strategy, and high-voltage electrical safety.

[0074] In the above implementation, by integrating the BMS and BDU, a BDU with BMS function is formed, namely BDMU (Battery Energy Distribution Management Unit).

[0075] Furthermore, by setting up the connection component 600, the electronic component component 200 and the control board 300 can be plugged in. This eliminates the need for numerous wiring harnesses for the electrical connection between the electronic component component 200 and the control board 300, making the assembly of the electronic component component 200 and the control board 300 easier. Moreover, the omission of numerous wiring harnesses during later maintenance also facilitates maintenance.

[0076] In one possible implementation, a heat-conducting element 400 is also included to improve the heat conduction and heat dissipation efficiency of the housing 100.

[0077] The heat-conducting component 400 is disposed between the bottom side of the housing 100 and the top surface of the cold plate 500, and the opposite sides of the heat-conducting component 400 abut against the housing 100 and the cold plate 500 respectively.

[0078] The heat-conducting component 400 is configured to conduct heat from the housing 100 to the cold plate 500 to dissipate heat from the housing 100.

[0079] In the above embodiment, the heat generated inside the housing 100 is first heated by heat conduction, and then the housing 100 conducts the heat to the cold plate 500 through the heat-conducting component 400, thereby achieving heat dissipation of the housing 100. The heat-conducting component 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.

[0080] In one possible implementation, in order to facilitate the processing and assembly of the housing 100, the housing 100 includes a first outer shell 110 and a second outer shell 120.

[0081] The first outer shell 110 is connected to the cold plate 500, and the second outer shell 120 is covered on the first outer shell 110. The first outer shell 110 and the second outer shell 120 together form the mounting cavity 10.

[0082] In this way, by setting the first outer shell 110 and the second outer shell 120 to cover the cavity, the mounting cavity 10 can be opened and closed more easily, thereby facilitating the installation and maintenance of the components inside the mounting cavity 10 and improving the installation efficiency of the housing 100.

[0083] One of the first housing 110 and the second housing 120 has at least one first snap-fit ​​member 111, and the other has at least one second snap-fit ​​member 121.

[0084] The first connector 111 and the second connector 121 are connected in a one-to-one correspondence.

[0085] In this way, the first snap-fit ​​component 111 and the second snap-fit ​​component 121 can be quickly and detachably connected to the first outer shell 110 and the second outer shell 120, improving the assembly efficiency of the shell 100. In a specific implementation, one of the first snap-fit ​​component 111 and the second snap-fit ​​component 121 is a snap-fit ​​ring, and the other is a snap-fit ​​connector, which is inserted into the snap-fit ​​ring. Of course, there can also be other forms in which the first snap-fit ​​component 111 and the second snap-fit ​​component 121 are connected in a one-to-one correspondence, and this application embodiment does not limit this.

[0086] Figures 2 and 4 show that the first housing 110 has a plurality of first snap-fit ​​pieces 111, each of which is a snap-fit ​​connector or snap-fit ​​ring. The second housing 120 has a plurality of second snap-fit ​​pieces 121, each of which is a snap-fit ​​ring or snap-fit ​​connector.

[0087] In one possible implementation, as shown in FIG5, the first housing 110 has at least one heat-conducting hole 112 on the side facing the cold plate 500.

[0088] The connector 250 transfers heat to the heat-conducting element 400 through the heat-conducting hole 112.

[0089] Here, by providing heat conduction holes 112, the heat conduction component 400 can come into contact with the connector 250 through the heat conduction holes 112. The heat on the connector 250 will first be conducted to the heat conduction component 400, and then to the cold plate 500 for elimination. Here, the heat conduction holes 112 can achieve direct contact between the connector 250 and the heat conduction component 400, which can further improve the heat conduction efficiency and thus improve the heat dissipation effect of the connector 250.

[0090] In the above embodiments, the thermally conductive component 400 is at least one of a thermally conductive pad and a thermally conductive gel. The thermally conductive pad has good thermal conductivity and high pressure resistance, and also has good flexibility, allowing it to fit well with the connector 250, thereby achieving better heat conduction. The thermally conductive gel has good thixotropic properties, can fill larger gaps, has a higher thermal conductivity than the thermally conductive pad, and also has a certain degree of insulation, which can improve the safety of the connector 250. The choice can be made according to actual needs.

[0091] In one possible implementation, to further improve the safety of the connector 250 and prevent short circuits, an insulating pad 800 is also included. The insulating pad 800 is disposed between the connector 250 and the heat-conducting element 400, and the opposite sides of the insulating pad 800 abut against the connector 250 and the heat-conducting element 400, respectively.

[0092] The insulating pad 800 can be an insulating rubber pad with a thickness ranging from 2 mm to 6 mm. Without affecting heat conduction, it can effectively protect the connector 250 from short circuits, ensuring its safe use. The thickness of the insulating pad 800 can be selected according to actual needs; this embodiment does not impose excessive restrictions on it.

[0093] This application embodiment also provides a battery pack, including a battery pack body 700 and the aforementioned battery energy distribution unit disposed within the battery pack body 700.

[0094] The specific structure of the battery energy distribution unit has been described above and will not be repeated here. The battery pack body 700 is 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 kind of battery pack body 700.

[0095] By using the aforementioned battery energy distribution unit within the battery pack, better heat dissipation can be achieved, ensuring the normal operation of the components. Simultaneously, it improves the integration of components within the battery pack, fully utilizing the internal space and saving more space for installing battery cells, thereby increasing the capacity of the battery pack itself 700.

[0096] This application also provides a vehicle, including a vehicle body and the aforementioned battery pack disposed on the vehicle body.

[0097] The implementation principle of the battery energy distribution unit, battery pack, and vehicle provided in this application embodiment is as follows: By setting a housing 100 with a mounting cavity 10, the control board 300 and electronic component 200 are both set in the mounting cavity 10. The electronic component 200 is electrically connected to the control board 300. The control board 300 is used for the battery management system to monitor the status parameters of the battery pack. The control board 300 is also used to control the opening and closing of the high-voltage electrical circuit and the low-voltage control circuit, thereby realizing the integration of the new energy vehicle battery energy distribution unit and the battery management system in the housing 100. At the same time, the main positive relay 210 and the main negative relay 220 are set up inverted and inserted on the control board 300, and the main positive relay 210 and the fuse 240 are connected by a connector 250. Part of the connector 250 abuts against the inner bottom wall of the housing 100. In this way, the cold plate of the battery pack dissipates heat to the entire housing 100, which is equivalent to dissipating heat to the electronic component 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.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery energy distribution unit, used for installation within a battery pack, characterized in that, include: The housing (100), electronic component assembly (200), control board (300), and at least one connector (250); The housing (100) is connected to the cold plate (500) of the battery pack; The housing (100) has a mounting cavity (10), and the control board (300) is disposed 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 disposed within the mounting cavity (10); The control board (300) is used for the battery management system to monitor the status parameters of the battery pack, and the control board (300) is also used to control the on / off state of the high-voltage electrical circuit and the low-voltage control circuit. At least one of the main positive relay (210) and the main negative relay (220) is inserted invertedly on the control board (300) and electrically connected to the control board (300); The fuse (240) is used to connect to the positive terminal of the battery pack and is connected to the main positive relay (210) via the connector (250); Part of the connector (250) abuts against the inner bottom wall of the mounting cavity (10).

2. The battery energy distribution unit of claim 1, wherein, The end of the connector (250) that connects to the main positive relay (210) is in the shape of a boss.

3. The battery energy distribution unit of claim 2, wherein, The boss-shaped end of the connector (250) facing away from the main positive relay (210) abuts against the inner bottom wall of the mounting cavity (10).

4. The battery energy distribution unit of claim 1, wherein, The electronic device assembly (200) further includes a shunt (260); the number of connectors (250) is set to at least two; One of the connectors (250) connects the shunt (260) and the main negative relay (220), and the connector (250) abuts against the inner bottom wall of the mounting cavity (10).

5. The battery energy distribution unit of claim 4, wherein, The connector (250) connecting the shunt (260) and the main negative relay (220) is in the form 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 disposed above the magnetic circuit portion (212), and the magnetic circuit portion (212) is disposed facing the inner bottom wall of the mounting 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 component (400); the housing (100) has at least one heat-conducting hole (112); The heat-conducting component (400) is disposed between the housing (100) and the cold plate (500); The heat-conducting element (400) is configured to conduct heat from the housing (100) to the cold plate (500) to dissipate heat from the housing (100); The connector (250) transfers heat to the heat conductor (400) through the heat-conducting hole (112).

8. The battery energy distribution unit of claim 7, wherein, Further comprising an insulating pad (800) arranged between the connecting member (250) and the heat conducting member (400), and opposite sides of the insulating pad (800) are respectively in abutment with the connecting member (250) and the heat conducting member (400).

9. A battery pack, characterized by, The battery energy distribution unit as claimed in any one of claims 1 to 8; and a battery pack body (700) connected with the battery energy distribution unit.

10. A vehicle characterized by comprising: The battery pack as claimed in claim 9; and a vehicle body on which the battery pack is arranged.

Images