Battery pack

Abstract

The utility model provides a battery pack. The battery pack comprises a box body, the battery pack circuit breaker is arranged in the box body, the battery pack circuit breaker comprises a shell and at least one cantilever structure, the shell comprises a top end face and a bottom end face which are opposite to each other, and a shell side face connected between the top end face and the bottom end face; the cantilever structure is connected to the top end face and arranged in a protruding mode relative to the side face of the shell. The cantilever structure comprises a cantilever installation structure. And the electric part is mounted on the cantilever mounting structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery pack. BACKGROUND

[0002] In the related art, the power battery pack is internally provided with a BDU (Battery Disconnect Unit), a BMS (Battery Management System), a communication connector and other electrical components, wherein the electrical components in the battery pack are distributed in a scattered manner, resulting in a serious waste of layout space in the battery pack. SUMMARY

[0003] The embodiments of the utility model provide a battery pack, which can improve the technical problem of uneven distribution of electrical components in the battery pack.

[0004] The embodiments of the utility model provide a battery pack, which comprises a box body.

[0005] The battery pack breaker is arranged in the box body, and comprises a shell and at least one cantilever structure, the shell comprises opposite top and bottom end faces and a shell side surface connected between the top and bottom end faces, the cantilever structure is connected to the top end face and arranged protruding relative to the shell side surface, and the cantilever structure comprises a cantilever mounting structure; and the electrical components are mounted on the cantilever mounting structure.

[0006] In an embodiment, the shell comprises a top cover and a base connected together, the cantilever structure is arranged on the top cover, and the top cover comprises opposite first and second top cover side surfaces, wherein the cantilever structure is arranged as at least two, and the at least two cantilever structures are connected to the first top cover side surface.

[0007] In an embodiment, the top cover is provided with a top cover mounting structure close to the second top cover side surface, and the electrical components are also mounted on the top cover mounting structure.

[0008] In an embodiment, the cantilever structure comprises a cantilever top plate and a cantilever side plate connected to the periphery of the cantilever top plate, the cantilever side plate comprises two opposite support arms, and the two support arms are connected to the first top cover side surface, wherein the side edges of the two support arms away from the cantilever top plate are arranged inclined relative to the cantilever top plate.

[0009] In an embodiment, the cantilever structure further comprises a plurality of reinforcing ribs, the plurality of reinforcing ribs are connected between the cantilever top plate and the cantilever side plate, the cantilever top plate and the plurality of reinforcing ribs are provided with mounting holes, the cantilever mounting structure comprises a nut, and the nut is mounted in the mounting hole.

[0010] In an embodiment, the electrical components include a plurality of mounting feet, a portion of the mounting feet are mounted to the two cantilever structures, and a portion of the mounting feet are mounted to the top cover mounting structure.

[0011] In an embodiment, the battery pack further includes a bracket, the bracket includes a support portion and a plurality of fixing portions connected to the support portion, and the electrical components are fixed to the support portion; wherein the plurality of fixing portions include a plurality of fixing feet, a portion of the fixing feet are respectively fixed to the two cantilever mounting structures, and a portion of the fixing feet are fixed to the top cover mounting structure.

[0012] In an embodiment, the support portion includes a heat dissipation wall and two bracket side walls bent and connected to two sides of the heat dissipation wall, two sides of the electrical components are respectively mounted to the two bracket side walls, and the plurality of fixing portions are respectively and spacedly fixed to one side of the heat dissipation wall away from the bracket side walls.

[0013] In an embodiment, a first heat dissipation space is formed between the electrical components and the heat dissipation wall, a second heat dissipation space is formed between the battery pack circuit breaker and the heat dissipation wall, the heat dissipation wall is provided with a heat dissipation hole, and the heat dissipation hole communicates the first heat dissipation space and the second heat dissipation space.

[0014] In an embodiment, the base is provided with a plurality of base support portions, each of the support portions is provided with a base nut, the top cover is provided with a connecting hole through which a bolt passes to be connected to the base nut, and an end face where the connecting hole is located is recessed relative to an end face where the cantilever structure is located.

[0015] The embodiment of the utility model has the advantages of:

[0016] In the embodiment of the utility model, the cantilever structure for mounting the electrical components inside the battery pack is arranged on the top end face of the shell of the battery pack circuit breaker, the electrical components include a BMS or a communication connector, the battery pack circuit breaker and the BMS or the communication connector are constructed as a two-layer connecting structure, and thus the height direction space inside the battery pack can be fully utilized. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the drawings for the technical personnel in the art without paying the creative labor.

[0018] Figure 1is a perspective view of the battery pack circuit breaker provided by the embodiment of the utility model;

[0019] Figure 2 is a perspective view of the battery pack circuit breaker provided by the embodiment of the utility model after the top cover and the base are separated from one view angle;

[0020] Figure 3 is another perspective view of the battery pack circuit breaker provided by the embodiment of the utility model after the top cover and the base are separated from another view angle;

[0021] Figure 4 is an internal structure view of the base of the battery pack circuit breaker provided by the embodiment of the utility model;

[0022] Figure 5 is a side view of the top cover provided by the embodiment of the utility model;

[0023] Figure 6 is a perspective view of the top cover provided by the embodiment of the utility model from one view angle;

[0024] Figure 7 is Figure 6 a partial enlarged view;

[0025] Figure 8 is a perspective view of the BMS fixed on the top end of the battery pack circuit breaker provided by the embodiment of the utility model;

[0026] Figure 9 is a perspective view of the BMS and its support fixed on the top end of the battery pack circuit breaker provided by another embodiment of the utility model;

[0027] Figure 10 is a perspective view of the BMS and its support provided by another embodiment of the utility model;

[0028] Figure 11 is a perspective view of the support of the BMS provided by another embodiment of the utility model from one view angle;

[0029] Reference numerals:

[0030] 1, battery pack circuit breaker; 10, shell; 11, top cover; 111, first top cover side; 112, second top cover side; 113, top cover body; 12, base; 131, top end surface of shell; 132, bottom end surface of shell; 133, shell side; 14, base support part; 15, base nut; 16, top cover bolt; 17, connecting hole; 18, notch;

[0031] 2, cantilever structure; 201, support arm; 202, support arm side; 203, reinforcing rib; 204, cantilever top plate; 205, cantilever side plate; 21, cantilever mounting structure; 211, first cantilever mounting structure; 212, second cantilever mounting structure; 24, top cover mounting structure; 213, first top cover mounting structure; 214, second top cover mounting structure; 215, third top cover mounting structure; 22, nut; 23, mounting hole;

[0032] 3, BMS; 31, mounting foot; 32, BMS bolt;

[0033] 4, bracket; 41, support part; 411, heat dissipation wall; 412, bracket side wall; 413, fixing lug; 42, fixing part; 421, fixing foot; 4211, first section; 4212, second section; 422, main body part; 431, first heat dissipation interval; 432, second heat dissipation interval;

[0034] 51, heating fuse; 52, main negative relay; 53, heating relay; 54, charging positive relay; 55, discharging positive relay; 56, pre-charging relay; 57, connector; DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, the orientation words such as 'up' and 'down' generally refer to the up and down of the device in the actual use or working state, and the specific direction is the direction of the drawing in the drawings. And 'inner' and 'outer' are relative to the outline of the device.

[0036] The embodiment of the utility model provides a kind of battery pack, battery pack includes box, battery module, battery pack circuit breaker, BMS, communication connector. Battery pack can be power battery pack, and can also be energy storage battery pack.

[0037] Box includes the upper cover and bottom plate of split setting, battery module is fixed on the bottom plate, and the upper cover is connected on the bottom plate.

[0038] The battery module includes a cylindrical battery module or a cylindrical battery module. The battery module includes a plurality of single batteries, busbars, and a battery fixing structure. The busbars are connected in series, parallel, or mixed connection to the positive and negative electrodes of the plurality of single batteries, so that the battery module has a suitable capacity. The battery fixing structure fixes the plurality of single batteries, so that the battery module can be stably placed in the box.

[0039] The BMS is configured to monitor and manage the state of the battery pack, including monitoring the voltage, current, and temperature of each single battery and battery module, estimating the remaining capacity and health status of the battery pack, performing equalization management of the battery module to make the performance of each single battery in the battery module consistent, and performing overcharge, overdischarge, and overtemperature protection of the battery module and single battery. The BMS also communicates and interacts with the control system of the vehicle to ensure safe, efficient, and reliable operation of the battery pack.

[0040] The communication connector is configured to realize information transmission and communication between the BMS and the single battery or other electrical components, and to integrate and coordinate the battery pack with the vehicle or other equipment.

[0041] The battery pack breaker 1 is a BDU (Battery Disconnect Unit). The battery pack breaker 1 is configured to control the on-off of the high-voltage loop inside the battery pack, distribute current, and have overcurrent protection, short-circuit protection, and other functions. The battery pack breaker 1 monitors some key parameters of the battery pack, such as voltage and current. When the battery pack fails, the battery pack breaker can quickly diagnose and take isolation measures to prevent the failure from expanding and affecting the entire power supply platform.

[0042] As shown in FIG. 1, the battery pack 100 includes a plurality of single batteries 101, a battery module 102, a battery management system (BMS) 103, a communication connector 104, a battery pack breaker 1, and a battery pack housing 2. Figures 1 to 4As shown, the battery pack breaker 1 comprises a housing 10, the housing 10 comprises a top cover 11 and a base 12 arranged separately, the top cover 11 is connected to the open end of the base 12. The base 12 is provided with a receiving cavity, and the heating fuse 51, the main negative relay 52, the heating relay 53, the charging positive relay 54, the discharging positive relay 55, the pre-charging relay 56 and the connector 57 are arranged in the receiving cavity of the base 12. The heating fuse 51 is arranged to provide overcurrent protection and fuse protection in the heating loop of the battery pack, one end of the heating fuse 51 is electrically connected to the positive access end of the battery module of the battery pack breaker 1, and the other end of the heating fuse 51 is electrically connected to the connector 57. The main negative relay 52 is arranged to control the on-off of the negative loop of the battery pack, one end of the main negative relay 52 is electrically connected to the negative access end of the battery module of the battery pack breaker 1, and the other end of the main negative relay 52 is electrically connected to the negative line of the vehicle. The heating relay 53 is arranged to control the opening and closing of the battery pack heating function, one end of the heating relay 53 is electrically connected to the heating fuse 51, and the other end of the heating relay 53 is electrically connected to the BMS. The charging positive relay 54 is arranged to control the connection of the positive loop during charging, one end of the charging positive relay 54 is electrically connected to the positive access end of the battery module of the battery pack breaker 1, and the other end of the charging positive relay 54 is electrically connected to the positive line of the charging port of the battery pack. The discharging positive relay 55 is arranged to control the on-off of the positive loop when the battery module discharges, one end of the discharging positive relay 55 is electrically connected to the positive access end of the battery module, and the other end of the discharging positive relay 55 is electrically connected to the external load, one end of the pre-charging relay 56 is electrically connected to the positive access end of the battery module, and the other end of the pre-charging relay 56 is electrically connected to the BMS.

[0043] The battery pack breaker, the BMS and the communication connector and various electrical components inside the box are usually arranged dispersedly, and are arranged in a planar layout inside the box, so that the layout space inside the box is wasted seriously. For different specifications of the battery pack, at least two electrical components cannot be integrated, so different electrical connections and wire harness structures need to be designed for different specifications of the battery pack, which leads to low development efficiency of the battery pack.

[0044] In some embodiments of the utility model, the housing structure of the battery pack breaker is improved, so that other electrical components can be installed on the top end face of the housing of the battery pack breaker. Specifically, as shown in Figure 1 , Figure 2 and Figure 4As shown, the battery pack circuit breaker 1 comprises a housing 10, the housing 10 comprises opposite top end face 131 and bottom end face 132, and the housing side face 133 connected between the top end face 131 and the bottom end face 132, at least one cantilever structure 2 is arranged at the top end face 131 of the housing 10, the cantilever structure 2 is connected to the housing side face 133, the cantilever structure 2 is arranged protruding relative to the housing side face 133, the cantilever structure 2 comprises a cantilever mounting structure 21, the cantilever mounting structure 21 is provided for mounting other electrical components so that the other electrical components are mounted on the top end face 131 of the housing 10. Among them, the other electrical components can be one or more of the BMS or the communication connector. By arranging the cantilever structure for mounting the BMS or the communication connector on the top end face 131 of the housing 10 of the battery pack circuit breaker 1, the battery pack circuit breaker 1 and the BMS or the communication connector are constructed as an upper and lower two-layer connection structure, so that the height direction space inside the battery pack can be fully utilized.

[0045] In some embodiments, as shown in Figure 1 Two cantilever structures 2 are arranged on one side of the top end face 131 of the housing 10 of the battery pack circuit breaker, and the other side of the top end face 131 of the housing 10 is not provided with a cantilever structure 2, wherein the side of the battery pack circuit breaker 1 provided with the cantilever structure 2 is arranged away from the battery module, and the side of the battery pack circuit breaker not provided with the cantilever structure is arranged close to the battery module, so as to avoid interference between the protruding cantilever structure 2 and the battery module.

[0046] In a specific embodiment, as shown in Figure 2 and Figure 3 The housing 10 comprises a top cover 11 and a base 12 arranged separately, the cantilever structure 2 is arranged on the top cover 11, and the top cover 11 comprises opposite first top cover side face 111 and second top cover side face 112 and top cover body 113 connected between the first top cover side face 111 and the second top cover side face 112. The number of cantilever structures 2 is at least two, and at least two cantilever structures 2 are connected to the first top cover side face 111 of the top cover 11. Compared with arranging one cantilever structure on the first top cover side face 111 and the second top cover side face 112 of the top cover 11 respectively, when the battery pack circuit breaker is installed inside the battery pack, transverse space needs to be reserved on both sides of the battery pack circuit breaker to accommodate at least two cantilever structures, thereby causing waste of internal space of the battery pack.

[0047] Among them, the length of the cantilever structure 2 protruding relative to the first top cover side face can be designed according to the length difference between the electrical component and the battery pack circuit breaker 1.

[0048] For example, the BMS is fixed to the top cover 11 of a battery pack circuit breaker. The BMS is bolted to the top cover 11 of the battery pack circuit breaker. The top cover 11 of the battery pack circuit breaker is typically made of a hard plastic material. Multiple nuts are embedded in the top cover 11. Some of the nuts are directly embedded in and penetrate the top cover body, while others are embedded in and penetrate the cantilever structure. The BMS is bolted into the nuts, thereby improving the connection strength between the BMS and the battery pack circuit breaker.

[0049] Continue to refer Figures 1 to 3 as well as Figure 8 As shown, the BMS is arranged in a square shape, and four mounting positions for fixing the BMS are arranged on the top cover 11 of the battery pack circuit breaker, respectively including two cantilever mounting structures 21 arranged on the two cantilever structures 2, and two top cover mounting structures 24 arranged on the top cover body 113. The two cantilever mounting structures 21 are respectively a first cantilever mounting structure 211 and a second cantilever mounting structure 212. The two top cover mounting structures 24 include a first top cover mounting structure 213 and a second top cover mounting structure 214. The first cantilever mounting structure 211 and the second cantilever mounting structure 212 correspond to fixing one side of the BMS, and the first top cover mounting structure 213 and the second top cover mounting structure 214 correspond to fixing the other side of the BMS.

[0050] The cantilever mounting structure 21 includes a nut 22 extending through the cantilever structure 2 and a bolt 16 extending through the nut 22. The top cover mounting structure 24 includes a nut 22 extending through the top cover 11 and a bolt 16 extending through the nut 16. The first cantilever mounting structure 211 and the first top cover mounting structure 213, as well as the second cantilever mounting structure 212 and the second top cover mounting structure 214, can be configured as symmetrical or asymmetrical structures. Specifically, these can be adaptively adjusted based on the structure of the BMS. For example, if the BMS has a regular square structure, the first cantilever mounting structure 211 and the first top cover mounting structure 213, as well as the second cantilever mounting structure 212 and the second top cover mounting structure 214, can be configured as symmetrical structures. If the BMS has an irregular square structure, the first cantilever mounting structure 211 and the first top cover mounting structure 213, as well as the second cantilever mounting structure 212 and the second top cover mounting structure 214, can be configured as asymmetrical structures.

[0051] In some implementations, such as Figures 1 to 3As shown, the BMS is arranged in a square shape, and the top cover 11 of the battery pack breaker is provided with five mounting positions for fixing the BMS, wherein two cantilever structures 2 are arranged near the first top cover side surface 111 of the top cover 11, and the two cantilever structures 2 are respectively provided with a first cantilever mounting structure 211 and a second cantilever mounting structure 212. The top cover body 113 near the second top cover side surface 112 of the top cover 11 is provided with three mounting positions, i.e., a first top cover mounting structure 213, a second top cover mounting structure 214, and a third top cover mounting structure 215 located between the first top cover mounting structure 213 and the second top cover mounting structure 214, wherein the third top cover mounting structure 215 is used as a reserved mounting position for mounting BMSs of different sizes.

[0052] With reference to Figure 5 , the cantilever structure 2 comprises a cantilever top plate 204 and a cantilever side plate 205 connected to the periphery of the cantilever top plate 204, and the cantilever side plate 205 comprises two opposite support arms 201 connected to the support arm side edges 202 of the first top cover side surface 111, which are beveled, so that the two support arm side edges 202 of the support arms 201 connected to the first top cover side surface 111 are configured in a triangular structure, so that the cantilever structure 2 has a stable structure, which is beneficial to stably support the gravity of the BMS or the communication connector and other electrical components. It can be understood that, as the main structure for supporting the BMS or the communication connector, the cantilever structure 2 protrudes from the first top cover side surface 111 of the top cover body 113 by a length only according to the length of the BMS or the communication connector, and does not protrude too much, so as not to affect the occupation of the length space inside the battery pack. By arranging the support arm side edges 202 of the cantilever structure 2 as beveled, the structural strength of the cantilever structure 2 itself is improved.

[0053] As shown in Figure 6 and Figure 7 , the cantilever structure 2 further comprises a reinforcing rib 203, and the cantilever mounting structure 21 comprises a nut 22 penetrating through the cantilever structure 2, and the cantilever top plate 204 and the reinforcing rib 203 are provided with mounting holes 23, and the nut 22 is installed in the mounting holes 23. By arranging the reinforcing rib 203 outside the mounting holes 23, the structural strength of the support body of the cantilever structure 2 is improved.

[0054] As shown in Figure 8As shown, the BMS 3 includes four mounting feet 31, and the BMS 3 includes opposite two BMS side edges, each of which is provided with a mounting foot 31, one of the two BMS side edges is provided with two mounting feet 31 which are mounted on the two cantilever mounting structures 21 of the first top cover side surface 111 of the top cover 11 of the battery pack circuit breaker 1, and the other BMS side edge is provided with two mounting feet 31 which are fixed on the two top cover mounting structures 24 close to the second top cover side surface 112 of the top cover 11 of the battery pack circuit breaker 1. The cantilever mounting structure 21 and the top cover mounting structure 24 are provided as bolt mounting structures, and the four mounting feet 31 of the BMS are provided with BMS connecting holes (not shown in the figure), and the bolts are passed through the connecting holes to be fixed in the nuts of the cantilever mounting structures or the nuts of the top cover mounting structures, so that the BMS 3 can be directly fixed on the top cover 11 of the battery pack circuit breaker 1, thereby effectively reducing the occupation of the BMS 3 and the battery pack circuit breaker 1 to the internal space of the battery pack.

[0055] As shown in Figure 9 and Figure 10 , the BMS 3 is mounted on the top cover 11 of the battery pack circuit breaker 1 through the bracket 4, the bracket 4 includes a support part 41 and a fixing part 42 connected to each other, the BMS 3 is fixed on the support part 41, and the fixing part 42 includes four fixing feet 421, two of which are fixed on the cantilever structures 2, and the other two are fixed on the other two mounting positions of the top cover 11.

[0056] Continuing to refer to Figures 9 to 11 , the support part 41 of the bracket 4 includes a heat dissipation wall 411 and two bracket side walls 412 bent and connected to the two sides of the heat dissipation wall 411, each of the two bracket side walls 412 is provided with two fixing lugs 413, each of the two fixing lugs 413 is provided with a through hole, and the four mounting feet of the two side edges of the BMS 3 are fixed on the four through holes of the four fixing lugs 413 through the four BMS bolts 32.

[0057] The fixing part 42 of the bracket 4 includes two, each of the fixing parts 42 includes a main body part 422 and two fixing feet 421 connected to the two ends of the main body part 422, the main body part 422 is connected to the back of the heat dissipation wall 411, the fixing feet 421 are bent and connected to the main body part 422, and the fixing feet 421 include a first section 4211 and a second section 4212 which are bent and connected, the first section 4211 is connected between the main body part 422 and the second section 4212, and the second section 4212 is provided with a connecting hole through which the bolt passes, wherein the second section 4212 is configured to be flush with the top end surface 131 of the top cover 11, so that the BMS and the bracket 4 can be stably fixed on the top end surface 131 of the battery pack circuit breaker 1 through the bolt.

[0058] The two fixing portions 42 are respectively arranged at the side of the heat dissipation wall 411 away from the bracket side wall 412, and the fixing portions 42 and the bracket side wall 412 for supporting the BMS 3 are arranged at both sides of the heat dissipation wall 411, so that the first heat dissipation space 431 is formed between the BMS 3 and the heat dissipation wall 411, the second heat dissipation space 432 is formed between the battery pack circuit breaker 1 and the heat dissipation wall 411, and the first heat dissipation space 431 and the second heat dissipation space 432 are communicated through the heat dissipation holes 433 arranged on the heat dissipation wall 411, so that the heat generated by the BMS 3 and the battery pack circuit breaker 1 during operation can be rapidly diffused into the first heat dissipation space 431 and the second heat dissipation space 432, thereby being fully dissipated.

[0059] In the related art, the top cover 11 and the base 12 of the battery pack circuit breaker 1 are fixed through a buckle structure, and in the above embodiment, the top end face 131 of the top cover 11 of the battery pack circuit breaker 1 is provided with the BMS 3, so that when the battery pack is in a severe vibration environment, the buckle connection structure between the top cover 11 and the base 12 of the battery pack circuit breaker 1 is prone to loosening.

[0060] In some embodiments provided in the present application, as shown in Figure 2 and Figure 3 Figure 4 The top cover 11 and the base 12 are fixed through bolts, so as to further enhance the stability of the connection between the top cover 11 and the base 12. A plurality of base support portions 14 are arranged on the base 12, and a base nut 15 is arranged on each base support portion 14. The top cover 11 is provided with a connecting hole 17 through which a top cover bolt 16 passes, and the top cover bolt 16 is fixed in the base nut 15 of the base 12 through the connecting hole 17 of the top cover 11. The end face where the connecting hole 17 of the top cover 11 is located is recessed relative to the end face groove where the cantilever structure 2 is located, so as to form a avoiding space to avoid interference between the top cover bolt 16 and the BMS 3 or the bracket 4.

[0061] In a specific implementation, two connecting holes 17 are respectively arranged near the first top cover side face 111 and the second top cover side face 112 of the top cover 11, and four base support portions 14 are respectively arranged near the two side walls of the base 12, and each base support portion 14 is provided with a base nut 15, so that the top cover 11 can be stably fixed on the base 12.

[0062] A plurality of notches 18 are further arranged on the top cover 11, and a plurality of maintenance windows are arranged at the positions of the notches 18, respectively, and a maintenance cover of each maintenance window is mounted on the base 12, and the position of the top cover 11 corresponding to the notches 18 is relatively weak, in order to further enhance the stability of the connecting structure between the top cover 11 and the base 12, a connecting hole 17 is arranged at the position of the notches of the top cover 11, and a base support part 14 is correspondingly added on the base 12, and a base nut 15 is arranged on the base support part 14, and a top cover bolt 16 is added through the connecting hole 17 at the notches 18 and is fixed in the base nut 15 on the base 12, so as to increase the connecting stability between the notches 18 of the top cover 11 and the base 12.

[0063] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and the implementation mode of the utility model have been set forth in this article by the application of specific example, the above embodiment explanation is only for helping understanding the method of the utility model and its core thought, simultaneously, for the technical personnel of the field, according to the thought of the utility model, in the specific implementation mode and the application range, will have the change of place, the above-mentioned, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A battery pack, characterized in that: include: Box; a battery pack circuit breaker disposed within the housing, the battery pack circuit breaker comprising a housing and at least one cantilever structure, the housing comprising opposing top and bottom surfaces, and a housing side surface connected between the top and bottom surfaces, the cantilever structure being connected to the top surface and protruding relative to the housing side surface, the cantilever structure comprising a cantilever mounting structure; as well as The electrical components are mounted on the cantilever mounting structure.

2. The battery pack according to claim 1, wherein: The shell includes a top cover and a base connected to each other, the cantilever structure is arranged on the top cover, and the top cover includes a first top cover side surface and a second top cover side surface opposite to each other, wherein the cantilever structures are arranged as at least two, and at least two of the cantilever structures are connected to the first top cover side surface.

3. The battery pack according to claim 2, wherein: The top cover is provided with a top cover mounting structure near the side surface of the second top cover, and the electrical components are also mounted on the top cover mounting structure.

4. The battery pack according to claim 2, wherein: The cantilever structure includes a cantilever top plate and a cantilever side plate connected to the periphery of the cantilever top plate, the cantilever side plate includes two opposite support arms, the two support arms are connected to the side surfaces of the first top cover, wherein the side edges of the two support arms away from the cantilever top plate are inclined relative to the cantilever top plate.

5. The battery pack according to claim 4, characterized in that: The cantilever structure also includes a plurality of reinforcing ribs, which are connected between the cantilever top plate and the cantilever side plates. The cantilever top plate and the plurality of reinforcing ribs are provided with mounting holes. The cantilever mounting structure includes a nut, which is installed in the mounting hole.

6. The battery pack according to claim 3, characterized in that: The electrical component includes a plurality of mounting feet, a portion of the mounting feet are mounted on the two cantilever structures, and a portion of the mounting feet are mounted on the top cover mounting structure.

7. The battery pack according to claim 3, characterized in that: The battery pack also includes a bracket, which includes a supporting part and multiple fixed parts that are connected to each other, and the electrical components are fixed on the supporting part; wherein, the multiple fixed parts include multiple fixed feet, a part of the fixed feet are respectively fixed on the two cantilever mounting structures, and a part of the fixed feet are fixed on the top cover mounting structure.

8. The battery pack according to claim 7, characterized in that: The support portion includes a heat dissipation wall and two bracket side walls bent and connected to both sides of the heat dissipation wall. The two sides of the electrical component are respectively installed on the two bracket side walls. The multiple fixing portions are respectively fixed at intervals on the side of the heat dissipation wall away from the bracket side wall.

9. The battery pack according to claim 8, characterized in that: A first heat dissipation interval is formed between the electrical component and the heat dissipation wall, a second heat dissipation interval is formed between the battery pack circuit breaker and the heat dissipation wall, and the heat dissipation wall is provided with heat dissipation holes, which connect the first heat dissipation interval and the second heat dissipation interval.

10. The battery pack according to claim 2, wherein: The base is provided with a plurality of base support parts, each of the support parts is provided with a base nut, and the top cover is provided with a connecting hole for a bolt to pass through, and the bolt passes through the connecting hole to be connected to the base nut, and the end face where the connecting hole is located is recessed relative to the end face where the cantilever structure is located.

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