Battery pack and electric equipment

Abstract

The utility model relates to a battery pack and electric equipment. The battery pack comprises a cold plate; the mounting bracket is arranged on the cold plate and is provided with a first mounting part, and a heat conduction piece is arranged in the first mounting part; and the power distribution assembly is fixedly arranged on the mounting bracket, and at least part of the power distribution assembly is in contact with the cold plate through the heat conduction piece. Through the technical scheme, the battery pack provided by the utility model can realize rapid heat dissipation of the power distribution assembly.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a battery pack and an electrical device. Background Art

[0002] In the related art, the power distribution assembly adopts natural cooling to dissipate heat. However, when the battery pack has higher power requirements, if the aforementioned cooling method continues to be used, the corresponding components in the power distribution assembly need to be replaced with components with larger specifications. This will not only cause the power distribution assembly to occupy more space in the battery pack, but also increase the cost of the battery pack. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery pack and an electrical device, wherein the battery pack can achieve rapid heat dissipation of a power distribution component.

[0004] In order to achieve the above-mentioned objectives, the present disclosure provides a battery pack, comprising: a cold plate; a mounting bracket, which is arranged on the cold plate and on which a heat conductive member is provided; and a power distribution assembly, which is fixed to the mounting bracket and at least partially exchanges heat with the cold plate through the heat conductive member.

[0005] Optionally, the battery pack further includes a battery cell assembly, and the battery cell assembly is disposed on the cold plate and exchanges heat with the cold plate.

[0006] Optionally, the battery pack also includes a frame and forms a accommodating cavity, the frame is arranged around the cold plate, the accommodating cavity includes a first accommodating cavity and a second accommodating cavity, the second accommodating cavity is located on one side of the first accommodating cavity and is connected to the first accommodating cavity, the battery cell assembly is installed in the first accommodating cavity, and the mounting bracket is installed in the second accommodating cavity.

[0007] Optionally, the power distribution assembly includes a first positive bus, a second positive bus, a fuse and a positive connector, one end of the first positive bus is electrically connected to the positive electrode of the battery cell assembly, and the other end is connected in series with the fuse, the second positive bus and the positive connector, wherein at least one of the first positive bus, the second positive bus and the fuse exchanges heat with the cold plate through the heat conductor.

[0008] Optionally, the mounting bracket has a first mounting portion, the first mounting portion includes a first sub-mounting portion and a second sub-mounting portion, the heat conductor includes a first heat conductor and a second heat conductor, the first heat conductor and the second heat conductor are respectively arranged at the first sub-mounting portion and the second sub-mounting portion, and the first positive bus and the fuse exchange heat with the cold plate through the first heat conductor and the second heat conductor, respectively.

[0009] Optionally, the second sub-mounting portion is constructed as a stepped hole, the stepped hole includes a first hole segment and a second hole segment, a stepped surface is formed between the first hole segment and the second hole segment, the second heat conductor is arranged in the first hole segment, and the fuse is partially embedded in the second hole segment and supported on the stepped surface.

[0010] Optionally, the first mounting portion also includes a third sub-mounting portion, the heat conductive member also includes a third heat conductive member, the third heat conductive member is arranged on the third sub-mounting portion, the power distribution assembly also includes a negative bus and a negative connector, one end of the negative bus is electrically connected to the negative electrode of the battery cell assembly, and the other end is electrically connected to the negative connector, and the negative bus exchanges heat with the cold plate through the third heat conductive member.

[0011] Optionally, the first sub-mounting portion and / or the third sub-mounting portion are configured as through holes.

[0012] Optionally, the mounting bracket is provided with a blocking boss, and the blocking boss is arranged between the first sub-mounting portion and the third sub-mounting portion.

[0013] Optionally, the battery pack includes a first fastener, and the mounting bracket also includes a second mounting portion and a third mounting portion, the first positive bus is in conductive contact with the positive electrode and is fixed to the second mounting portion through the first fastener, and the negative bus is in conductive contact with the negative electrode and is fixed to the third mounting portion through the first fastener.

[0014] Optionally, the first fastener includes a first nut and a first bolt, the second mounting portion and / or the third mounting portion includes a first slot and a second slot, the first slot is connected to the second slot and a stop surface is formed between the first slot and the second slot, the notch of the first slot and the notch of the second slot are arranged toward the same side so that the first nut can be inserted into the second slot and abut against the stop surface, the first bolt extends into the first slot and is locked with the first nut to fix the first positive bus and the positive electrode to the second mounting portion, or to fix the negative bus and the negative electrode to the third mounting portion.

[0015] Optionally, the battery pack includes a second fastener, the mounting bracket further includes a fourth mounting portion, the fuse has a connecting portion, and the second fastener passes through the connecting portion and is fastened to the fourth mounting portion to fix the fuse to the mounting bracket.

[0016] Optionally, the fourth mounting portion is configured as a first threaded hole, the connecting portion is configured as a protrusion, the protrusion is concave to form a connecting groove, and the second fastener passes through the connecting groove to be fastened to the first threaded hole.

[0017] On the basis of the above technical solution, the present disclosure further provides an electrical device, which includes the above battery pack.

[0018] Through the above technical solution, in the battery pack provided by the present invention, on the one hand, the distribution assembly can be reliably mounted and fixed on the cold plate through the mounting bracket, and on the other hand, since at least part of the distribution assembly exchanges heat with the cold plate through the heat conductor, the heat generated by the distribution assembly can be transferred to the cold plate through the heat conductor, and then dissipated to the external space through the cold plate, so that the distribution assembly can be quickly cooled.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a schematic structural diagram of a battery pack provided by an exemplary embodiment of the present disclosure;

[0022] Figure 2 is a schematic diagram of an assembly structure of a mounting bracket and a power distribution assembly provided by an exemplary embodiment of the present disclosure;

[0023] Figure 3 is an exploded view of a mounting bracket and a power distribution assembly provided by an exemplary embodiment of the present disclosure;

[0024] Figure 4 is a partial structural schematic diagram of a mounting bracket provided by an exemplary embodiment of the present disclosure;

[0025] Figure 5 is another partial structural schematic diagram of a mounting bracket provided by an exemplary embodiment of the present disclosure;

[0026] Figure 6 is a schematic structural diagram of a mounting bracket provided by an exemplary embodiment of the present disclosure;

[0027] Figure 7 yes Figure 6 Cross-sectional view at AA in the middle.

[0028] Description of Reference Numerals

[0029] 1-cold plate; 2-mounting bracket; 21-through hole; 22-step hole; 221-first hole section; 222-second hole section; 223-step surface; 23-blocking boss; 24-lug; 241-second threaded hole; 25-second mounting portion; 251-first slot; 252-second slot; 253-stop surface; 26-third mounting portion; 27-fourth mounting portion; 3-first mounting portion; 31-first sub-mounting portion; 32-second sub-mounting portion; 33-third sub-mounting portion; 4-heat conducting member; 41-first conductive member Thermal element; 42-second thermal conductor; 43-third thermal conductor; 5-power distribution assembly; 51-first positive bus; 52-second positive bus; 53-negative bus; 54-fuse; 541-connecting portion; 5411-bump; 5411a-connecting groove; 55-positive connector; 56-negative connector; 6-cell assembly; 7-frame; 8-accommodating chamber; 81-first accommodating chamber; 82-second accommodating chamber; 9-first nut; 10-first bolt; 11-second fastener; 12-blocking boss. DETAILED DESCRIPTION

[0030] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0031] In the present disclosure, unless otherwise specified, directional words such as "inside" and "outside" refer to "inside" and "outside" relative to the corresponding component's own contour. In addition, the terms "first", "second", "third", "fourth", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limitations on the present disclosure.

[0032] The present disclosure provides a battery pack, referring to Figures 1 to 3 As shown in the figure, the battery pack includes: a cold plate 1; a mounting bracket 2, which is arranged on the cold plate 1 and has a heat conductor 4 on the mounting bracket 2; and a power distribution assembly 5, which is fixed to the mounting bracket 2 and at least partially exchanges heat with the cold plate 1 through the heat conductor 4.

[0033] Through the above technical solution, in the battery pack provided by the present invention, the distribution component 5 can be reliably installed and fixed on the cold plate 1 through the mounting bracket 2, and on the other hand, since at least a part of the distribution component 5 exchanges heat with the cold plate 1 through the heat conductor 4, the heat generated by the distribution component 5 can be transferred to the cold plate 1 through the heat conductor 4, and then dissipated to the external space through the cold plate 1, so that the distribution component 5 can be quickly cooled.

[0034] Among them, the mounting bracket 2 can be made of any suitable material, and the present disclosure does not impose any restrictions on this. Exemplarily, the mounting bracket 2 can be made of an insulating material, such as plastic, or can be made of a conductive material, such as a conductive metal. It should be noted that when the mounting bracket 2 is made of an insulating material such as plastic, the mounting bracket 2 itself can be used as an insulating member to achieve reliable insulation between the power distribution assembly 5 and the cold plate 1 in the battery pack, and when the mounting bracket 2 is made of a conductive material such as metal, it is necessary to ensure reliable insulation between the power distribution assembly 5 and the cold plate 1 in the battery pack by other means, for example, an insulating coating can be applied to the surface of the mounting bracket 2.

[0035] The heat conducting member 4 can be implemented in any suitable manner, and the present disclosure does not limit this. For example, the heat conducting member 4 can be a heat conducting adhesive poured on site, in which case the heat conducting member 4 is easy to manufacture and has low cost. Of course, the heat conducting member 4 can also be a heat conducting block prefabricated with heat conducting adhesive, in which case the processed heat conducting member 4 has a regular appearance and is easy to assemble. The specific method of manufacturing the heat conducting member 4 can be flexibly selected according to actual conditions, and the present disclosure does not limit this.

[0036] In the exemplary embodiments provided in the present disclosure, reference is made to Figure 1 As shown in , the battery pack may further include a cell assembly 6. In order to achieve heat dissipation of the cell assembly 6, the cell assembly 6 may be arranged on the cold plate 1 and exchange heat with the cold plate 1. In this way, the cold plate 1 may not only achieve heat dissipation for the power distribution assembly 5, but also achieve heat dissipation for the cell assembly 6, thereby greatly improving the utilization rate of the cold plate 1.

[0037] In the exemplary embodiments provided in the present disclosure, reference is made to Figure 1 As shown in the figure, the battery pack may further include a frame 7 and a accommodating cavity 8, the frame 7 is arranged around the cold plate 1, the accommodating cavity 8 includes a first accommodating cavity 81 and a second accommodating cavity 82, the second accommodating cavity 82 is located on one side of the first accommodating cavity 81 and is connected to the first accommodating cavity 81, the battery cell assembly 6 is installed in the first accommodating cavity 81, and the mounting bracket 2 is installed in the second accommodating cavity 82. Through such an arrangement, the battery cell assembly 6 and the distribution assembly 5 can be independently arranged in different cavities, so as to realize the rapid installation of the battery cell assembly 6 and the distribution assembly 5 in the battery pack.

[0038] In the exemplary embodiments provided in the present disclosure, reference is made to Figures 1 to 3As shown in the figure, the distribution assembly 5 may include a first positive bus 51, a second positive bus 52, a fuse 54 and a positive connector 55, one end of the first positive bus 51 is electrically connected to the positive electrode of the battery cell assembly 6, and the other end is connected in series with the fuse 54, the second positive bus 52 and the positive connector 55, wherein at least one of the first positive bus 51, the second positive bus 52 and the fuse 54 is heat exchanged with the cold plate 1 through the heat conductor 4, so that while ensuring the conductive connection between the positive electrode of the distribution assembly 5 and the positive electrode of the battery cell assembly 6, rapid heat dissipation of each positive electrode component in the distribution assembly 5 can also be achieved.

[0039] In the exemplary embodiment provided by the present disclosure, each positive electrode component of the power distribution assembly 5 can exchange heat with the cold plate 1 through the heat conducting member 4 in any suitable manner, and the present disclosure does not limit this. Figure 2 and Figure 3 As shown in , the mounting bracket 2 may have a first mounting portion 3, the first mounting portion 3 may include a first sub-mounting portion 31 and a second sub-mounting portion 32, the heat conductive member 4 may include a first heat conductive member 41 and a second heat conductive member 42, the first heat conductive member 41 and the second heat conductive member 42 are respectively arranged on the first sub-mounting portion 31 and the second sub-mounting portion 32, wherein each positive electrode component of the power distribution assembly 5 can be heat exchanged with the cold plate 1 through these heat conductive members 4 in at least the following three possible implementation modes:

[0040] In a first possible implementation manner, the first positive electrode busbar 51 exchanges heat with the cold plate 1 through the first heat conductor 41 .

[0041] In a second possible implementation manner, the fuse 54 exchanges heat with the cold plate 1 through the second heat conducting member 42 .

[0042] In a third possible implementation, refer to Figure 2 and Figure 3 As shown in FIG. 1 , the first positive electrode bus bar 51 and the fuse 54 are heat-exchanged with the cold plate 1 through the first heat conductor 41 and the second heat conductor 42 , respectively.

[0043] In the exemplary embodiments provided in the present disclosure, reference is made to Figure 3 , Figure 6 as well as Figure 7As shown in , the second sub-mounting portion 32 can be constructed as a stepped hole 22, the stepped hole 22 includes a first hole section 221 and a second hole section 222, a stepped surface 223 is formed between the first hole section 221 and the second hole section 222, the second heat conductor 42 is arranged in the first hole section 221, and the fuse 54 is partially embedded in the second hole section 222 and supported on the stepped surface 223, so that, on the one hand, the fuse 54 can be reliably installed, and on the other hand, since part of the surface of the fuse 54 is exposed to the outside of the stepped hole 22, it is convenient to connect the fuse 54 with the first positive bus 51 and the second positive bus 52. Among them, the setting of the second hole section 222 can also facilitate the installation of the second heat conductor 42, so that when the fuse 54 is working, the heat can be transferred to the cold plate 1 through the second heat conductor 42, and then the heat is dissipated through the cold plate 1.

[0044] In the exemplary embodiment provided by the present disclosure, the first mounting portion 3 may further include a third sub-mounting portion 33, the heat conductor 4 may further include a third heat conductor 43, the third heat conductor 43 is arranged on the third sub-mounting portion 33, and the distribution assembly 5 may further include a negative bus 53 and a negative connector 56, one end of the negative bus 53 is electrically connected to the negative electrode of the battery cell assembly 6, and the other end is electrically connected to the negative connector 56, the negative bus 53 exchanges heat with the cold plate 1 through the third heat conductor 43, through such a configuration, not only can the conductive connection between the negative electrode of the distribution assembly 5 and the negative electrode of the battery cell assembly 6 be ensured, but also the rapid heat dissipation of each negative electrode component in the distribution assembly 5 can be achieved.

[0045] The first sub-mounting portion 31 and the third sub-mounting portion 33 may be constructed in any suitable manner, and the present disclosure does not limit this. Optionally, the first sub-mounting portion 31 and the third sub-mounting portion 33 may have at least the following three possible implementations:

[0046] In a first possible implementation manner, the first sub-mounting portion 31 may be configured as a through hole 21 .

[0047] In a second possible implementation manner, the third sub-mounting portion 33 may be configured as a through hole 21 .

[0048] In a third possible implementation, refer to Figure 3 As shown in , the first sub-mounting portion 31 and the third sub-mounting portion 33 may both be configured as through holes 21 .

[0049] In addition, in order to achieve the contact between the second positive bus 52 and the cold plate 1, the heat conductor 4 may also include a fourth heat conductor (not shown in the figure), the first mounting portion 3 may also include a fourth sub-mounting portion (not shown in the figure), the fourth heat conductor is arranged on the fourth sub-mounting portion, and the second positive bus 52 exchanges heat with the cold plate 1 through the fourth heat conductor, wherein the fourth sub-mounting portion may be constructed as a through hole. In this embodiment, since the number of distribution components in the distribution assembly 5 that exchange heat with the cold plate 1 is increased, the heat dissipation effect of the distribution assembly 5 can be further improved.

[0050] In the exemplary embodiments provided in the present disclosure, reference is made to Figure 2 , Figure 3 as well as Figure 6 As shown in , in order to ensure reliable insulation between the first positive busbar 51 and the negative busbar 53, the mounting bracket 2 may also be provided with a blocking boss 23, which is arranged between the first sub-mounting portion 31 and the third sub-mounting portion 33. The blocking boss 23 may be provided on the mounting bracket 2 by an integral molding method, or may be connected to the mounting bracket 2 by bonding or welding. Regardless of the processing method, the setting of the blocking boss 23 is based on the reliable insulation between the first positive busbar 51 and the negative busbar 53.

[0051] In the exemplary embodiments provided in the present disclosure, reference is made to Figures 3 to 6 As shown in the figure, the battery pack may include a first fastener, and the mounting bracket 2 may also include a second mounting portion 25 and a third mounting portion 26. The first positive bus 51 is in conductive contact with the positive electrode and is fixed to the second mounting portion 25 through the first fastener, and the negative bus 53 is in conductive contact with the negative electrode and is fixed to the third mounting portion 26 through the first fastener. Through such an arrangement, disassembly can be facilitated while achieving the necessary conductive connection between the distribution assembly 5 and the battery cell assembly 6.

[0052] The first fastener, the second mounting portion 25 and the third mounting portion 26 can be implemented in any suitable manner, and the present disclosure does not limit this. Optionally, the first fastener may include a first nut 9 and a first bolt 10, and the second mounting portion 25 may include a first slot 251 and a second slot 252, the first slot 251 is connected to the second slot 252 and a stop surface 253 is formed between the first slot 251 and the second slot 252, the notch of the first slot 251 and the notch of the second slot 252 are arranged toward the same side, so that the first nut 9 is inserted into the second slot 252 and abuts against the stop surface 253, and the first bolt 10 extends into the first slot 251 and is locked with the first nut 9, so as to fix the first positive bus 51 and the positive electrode to the second mounting portion 25.

[0053] The third mounting portion 26 can have the same structure as the second mounting portion 25, that is, the third mounting portion 26 can also include a first slot 251 and a second slot 252, the first slot 251 is connected to the second slot 252 and a stop surface 253 is formed between the first slot 251 and the second slot 252, the notch of the first slot 251 and the notch of the second slot 252 are arranged toward the same side, so that the first nut 9 can be inserted into the second slot 252 and abut against the stop surface 253, the first bolt 10 extends into the first slot 251 and is locked with the first nut 9 to fix the negative bus 53 and the negative electrode to the third mounting portion 26.

[0054] In the above embodiment, the first slot 251 and the second slot 252 can be constructed in any suitable manner, and the present disclosure does not limit this. Figure 4 and Figure 5 As shown in the figure, the first slot 251 and the second slot 252 can both be constructed as U-shaped slots, and a stop surface 253 is formed between the first slot 251 and the second slot 252, so that when the first nut 9 is inserted into the second slot 252, the first nut 9 can be stuck in the second slot 252, thereby facilitating the limiting and fixing of the first nut 9.

[0055] In the exemplary embodiments provided in the present disclosure, reference is made to Figure 3 and Figure 6 As shown in , in order to reliably fix the fuse 54 on the mounting bracket 2, the battery pack can be arranged to also include a second fastener 11, the mounting bracket 2 also includes a fourth mounting portion 27, the fuse 54 has a connecting portion 541, and the second fastener 11 passes through the connecting portion 541 and is fastened to the fourth mounting portion 27 to fix the fuse 54 to the mounting bracket 2.

[0056] Among them, the fourth mounting portion 27 can be constructed as a first threaded hole, the connecting portion 541 can be constructed as a protrusion 5411, the protrusion 5411 is concave to form a connecting groove 5411a, and the second fastener 11 can be constructed as a screw, which passes through the connecting groove 5411a to be fastened to the first threaded hole. In this way, not only can the fuse 54 be reliably fixed on the mounting bracket 2, but it is also convenient to disassemble the fuse 54.

[0057] In the exemplary embodiments provided in the present disclosure, reference is made to Figure 3 As shown in , the number of the fourth mounting portions 27 and the number of the connecting portions 541 are both two, and the two connecting portions 541 are symmetrically arranged on both sides of the fuse 54 and correspond one to one to the two fourth mounting portions 27 .

[0058] In the exemplary embodiments provided in the present disclosure, reference is made to Figure 2 , Figure 3 as well as Figure 6As shown in the figure, in order to achieve reliable fixation of the mounting bracket 2 and the cold plate 1, the battery pack can be configured to also include a second bolt and a second nut (not shown in the figure). At the same time, lugs 24 are respectively provided on both sides of the mounting bracket 2, and a second threaded hole 241 is provided on the lug 24. A third threaded hole (not shown in the figure) is provided on the cold plate 1, and the second bolt passes through the second threaded hole 241 and the third threaded hole and is fastened to the second nut.

[0059] On the basis of the above technical solution, the present disclosure further provides an electric device, which includes the above-mentioned battery pack. Here, the electric device can be any suitable electric device such as a mobile terminal, a portable device, and a vehicle (such as an electric vehicle or a hybrid vehicle), which is not limited by the present disclosure. Among them, the relevant content about the battery pack has been described in detail in the above content, so in order to avoid repetition, the present disclosure will not repeat it here.

[0060] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0062] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery pack, characterized in that: include: Cold plate; A mounting bracket is arranged on the cold plate, and a heat conducting member is provided on the mounting bracket; as well as The power distribution assembly is fixed to the mounting bracket and at least partially exchanges heat with the cold plate through the heat conducting member.

2. The battery pack according to claim 1, characterized in that: The battery pack further includes a battery cell assembly, which is disposed on the cold plate and exchanges heat with the cold plate.

3. The battery pack according to claim 2, characterized in that: The battery pack also includes a frame and a accommodating cavity, the frame is arranged around the cold plate, the accommodating cavity includes a first accommodating cavity and a second accommodating cavity, the second accommodating cavity is located on one side of the first accommodating cavity and is connected to the first accommodating cavity, the battery cell assembly is installed in the first accommodating cavity, and the mounting bracket is installed in the second accommodating cavity.

4. The battery pack according to claim 2, characterized in that: The power distribution assembly includes a first positive busbar, a second positive busbar, a fuse, and a positive connector. One end of the first positive busbar is electrically connected to the positive electrode of the battery cell assembly, and the other end is connected in series with the fuse, the second positive busbar and the positive connector. Wherein, at least one of the first positive busbar, the second positive busbar and the fuse exchanges heat with the cold plate through the heat conducting member.

5. The battery pack according to claim 4, characterized in that: The mounting bracket has a first mounting portion, the first mounting portion includes a first sub-mounting portion and a second sub-mounting portion, the heat conducting member includes a first heat conducting member and a second heat conducting member, the first heat conducting member and the second heat conducting member are respectively disposed on the first sub-mounting portion and the second sub-mounting portion. The first positive busbar and the fuse exchange heat with the cold plate through the first heat conductive member and the second heat conductive member respectively.

6. The battery pack according to claim 5, characterized in that: The second sub-mounting portion is constructed as a stepped hole, which includes a first hole segment and a second hole segment, a stepped surface is formed between the first hole segment and the second hole segment, the second heat conductor is arranged in the first hole segment, and the fuse is partially embedded in the second hole segment and supported on the stepped surface.

7. The battery pack according to claim 5, characterized in that: The first mounting portion also includes a third sub-mounting portion, the heat conductive member also includes a third heat conductive member, the third heat conductive member is arranged on the third sub-mounting portion, the power distribution assembly also includes a negative bus and a negative connector, one end of the negative bus is electrically connected to the negative electrode of the battery cell assembly, and the other end is electrically connected to the negative connector, and the negative bus exchanges heat with the cold plate through the third heat conductive member.

8. The battery pack according to claim 7, characterized in that: The first sub-mounting portion and / or the third sub-mounting portion are configured as through holes.

9. The battery pack according to claim 7, characterized in that: The mounting bracket is provided with a blocking boss, and the blocking boss is arranged between the first sub-mounting portion and the third sub-mounting portion.

10. The battery pack according to any one of claims 7 to 9, characterized in that: The battery pack includes a first fastener, the mounting bracket also includes a second mounting portion and a third mounting portion, the first positive busbar is in conductive contact with the positive electrode and is fixed to the second mounting portion through the first fastener, The negative electrode bus bar is in conductive contact with the negative electrode and is fixed to the third mounting portion through the first fastener.

11. The battery pack according to claim 10, characterized in that: The first fastener comprises a first nut and a first bolt, The second mounting portion and / or the third mounting portion comprises a first slot and a second slot, the first slot is connected to the second slot and a stop surface is formed between the first slot and the second slot, and the notch of the first slot and the notch of the second slot are arranged toward the same side so that the first nut can be inserted into the second slot and abut against the stop surface. The first bolt extends into the first slot and is locked with the first nut to fix the first positive busbar and the positive electrode to the second mounting portion, or to fix the negative busbar and the negative electrode to the third mounting portion.

12. The battery pack according to any one of claims 4 to 9, characterized in that: The battery pack includes a second fastener, the mounting bracket also includes a fourth mounting portion, the fuse has a connecting portion, and the second fastener passes through the connecting portion and is fastened to the fourth mounting portion to fix the fuse to the mounting bracket.

13. The battery pack according to claim 12, characterized in that: The fourth mounting portion is configured as a first threaded hole, the connecting portion is configured as a convex block, the convex block is concave to form a connecting groove, and the second fastener passes through the connecting groove to be fastened to the first threaded hole.

14. An electrical device, characterized in that: The electrical device comprises a battery pack according to any one of claims 1-13.

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