Battery pack and electric equipment

Abstract

The utility model relates to a battery pack and electric equipment, and relates to the technical field of batteries, the battery pack comprises a battery box, a plurality of batteries, a circuit board assembly and a support, the battery box is provided with a mounting cross beam, and the mounting cross beam comprises a top wall and a side wall which are connected with each other; the plurality of batteries are stacked in the battery box along a preset direction, and the plurality of batteries are arranged on at least one side of the mounting cross beam; the circuit board assembly comprises a body and a plug-in connected to one end of the surface of one side of the body, the body covers the top covers of the batteries, and the plug-in is convexly arranged at one end, close to the mounting cross beam, of the body; the support is arranged between the body and the mounting beam to accommodate the plug-in, one end of the support close to the body is connected with the side surface of the body, one end of the support close to the mounting beam is provided with a limit portion, and the limit portion is clamped with the top wall and the side wall and is fixed relative to the side wall. According to the battery pack and the electric equipment, the mounting stability between the bracket and the mounting cross beam can be improved.

Description

Battery packs and electrical equipment Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery pack and an electrical device. Background Technology

[0002] The circuit board assembly in the battery pack is mainly used for system control and battery status detection. The ends of the circuit board assembly typically have connectors for connecting the assembly to other electrical components. These connectors usually need to be fixed in place to improve electrical connection stability. In related technologies, the installation stability of these connectors is poor, easily causing them to wobble, which is detrimental to the circuit board assembly's control operations. Summary of the Invention

[0003] To address the aforementioned technical problems, embodiments of this application provide a battery pack and electrical equipment that can mount the plug-in to the mounting beam via a bracket, thereby improving the stability of the plug-in installation.

[0004] In a first aspect, a battery pack is provided, comprising:

[0005] The battery box is equipped with a mounting beam, which includes a top wall and side walls that are connected to each other.

[0006] Multiple batteries are stacked in the battery box along a predetermined direction, and the multiple batteries are disposed on at least one side of the mounting beam;

[0007] A circuit board assembly includes a body and a plug connected to one end of a surface of the body, the body covering the top cover of a plurality of batteries, and the plug protruding from one end of the body near the mounting beam.

[0008] A bracket is disposed between the body and the mounting beam to accommodate the plug-in. One end of the bracket near the body is connected to the side surface of the body, and a limiting part is provided at the end of the bracket near the mounting beam. The limiting part engages with the top wall and the side wall and is fixed relative to the side wall.

[0009] According to a first aspect of this application, the limiting portion includes a bent mounting wall and a limiting wall, the mounting wall being disposed on the side of the bracket away from the body to abut against the top wall, and the limiting wall extending from the edge of the mounting wall toward the mounting beam to abut against the side wall.

[0010] The limiting wall is provided with a first mating hole, and the side wall is provided with a second mating hole;

[0011] The battery pack also includes:

[0012] Fasteners, which are detachably fitted into the first mating hole and the second mating hole along the preset direction, to fix the bracket.

[0013] According to a first aspect of this application, the mounting wall is provided with a protrusion, and the top wall is provided with a first limiting hole, wherein the protrusion cooperates with the first limiting hole for limiting;

[0014] The diameter of the first limiting hole is larger than the maximum diameter of the protrusion, so as to enable the bracket and the mounting beam to move relative to each other radially along the first limiting hole;

[0015] Along the height direction of the mounting beam, the bottom surface of the protrusion is higher than the top surface of the first mating hole.

[0016] According to a first aspect of this application, a thinning area is recessed on the side of the limiting wall opposite to the side wall. The thinning area includes a fastening surface and a connecting surface that are connected to each other. The fastening surface is parallel to the side wall, and one end of the connecting surface is connected to the fastening surface at an angle, while the other end is connected to the side of the bracket.

[0017] According to a first aspect of this application, the bracket is provided with a connecting post on the side near the body, and a second limiting hole is provided at one end of the side surface of the body. The connecting post cooperates with the second limiting hole to fix the bracket to the body.

[0018] According to a first aspect of this application, the end of the body is bent to form a U-shaped groove, the two sides of the U-shaped groove are provided with second limiting holes, a partition is provided inside the U-shaped groove, the partition is provided with a third limiting hole, and the connecting post is engaged with the second limiting hole and the third limiting hole.

[0019] According to a first aspect of this application, the bracket has a recessed receiving groove on one side near the body, the receiving groove being used to receive the plug-in, and an opening is provided on one side wall of the receiving groove near the limiting wall to expose the plug-in interface, so that an external connector can be connected to the plug-in along the preset direction.

[0020] According to a first aspect of this application, the bottom of the receiving groove is provided with multiple raised ribs, and the multiple raised ribs abut against the plug-in together;

[0021] The receiving groove includes two first groove walls forming the opening and a second groove wall connecting the two first groove walls. The outer wall of the first groove wall is provided with a plurality of reinforcing ribs. One end of the plurality of reinforcing ribs abuts against the top wall, and the other end is connected to each other to abut against the body. The second groove wall is used to close the plug-in on the side away from the opening.

[0022] According to a first aspect of this application, the number of brackets is multiple, and the multiple brackets are distributed along the length direction of the mounting beam; the limiting walls of the multiple brackets abut against the same side wall.

[0023] Secondly, an electrical device is also provided, including a battery pack as described in the previous embodiment.

[0024] The battery pack and electrical equipment provided in this application embodiment increase the contact area between the bracket and the mounting beam by setting a limiting part on the bracket for mounting the plug and making the limiting part snap into the top wall and side wall of the mounting beam. Furthermore, the limiting part and the mounting beam can limit each other in multiple directions, which can effectively improve the installation stability between the bracket and the mounting beam. Compared with the plug being directly installed on the mounting beam, the stability of the adjustable plug installation is improved. Attached Figure Description

[0025] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0026] Figure 1 is a schematic diagram of the mounting beam, circuit board assembly, and bracket provided in an exemplary embodiment of this application.

[0027] Figure 2 is a structural schematic diagram of the bracket and plug-in provided in an exemplary embodiment of this application from a first perspective.

[0028] Figure 3 is a schematic diagram of the installation beam provided in an exemplary embodiment of this application.

[0029] Figure 4 is a structural schematic diagram of the bracket and plug-in provided in an exemplary embodiment of this application from a second perspective.

[0030] Figure 5 is a schematic diagram of the support and plug-in provided in an exemplary embodiment of this application from a third-person perspective.

[0031] Figure 6 is a schematic diagram of the structure of the ontology provided in an exemplary embodiment of this application.

[0032] Figure 7 is a schematic diagram of the structure of the body and partition provided in an exemplary embodiment of this application.

[0033] Figure 8 is a schematic diagram of the structure of a partition provided in an exemplary embodiment of this application.

[0034] Reference numerals: 110-Mounting beam; 111-Top wall; 112-Side wall; 113-Second mating hole; 114-First limiting hole; 120-Circuit board assembly; 121-Body; 122-Plug-in; 123-Second limiting hole; 124-U-groove; 125-Partition; 126-Third limiting hole; 130-Bracket; 131-Limiting part; 1311-Mounting wall; 1312-Limiting wall; 1313-First mating hole; 132-Protrusion; 133-Thinning area; 1331-Fastening surface; 1332-Connecting surface; 134-Connecting column; 135-Accommodating groove; 1351-First groove wall; 1352-Second groove wall; 1353-Reinforcing rib; 136-Opening; 137-Protruding rib; 140-Fastener. Detailed Implementation

[0035] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0036] Figure 1 is a schematic diagram of the structure of the mounting beam, circuit board assembly, and bracket provided in an exemplary embodiment of this application. As shown in Figure 1, the battery pack provided in this embodiment may include a battery box and multiple batteries. The battery box is provided with a mounting beam 110, and the multiple batteries are stacked in the battery box along a preset direction (specifically referring to the X-axis direction in Figure 1). The multiple batteries are disposed on at least one side of the mounting beam 110.

[0037] It should be understood that the battery box can support and protect multiple batteries, and the mounting beam 110 can limit the movement of multiple batteries to prevent them from tilting or shifting. The mounting beam can also improve the strength of the battery box.

[0038] In one embodiment, multiple batteries may be stacked on one side of the mounting beam 110; or, multiple batteries may be stacked on both sides of the mounting beam 110. The mounting beam and batteries can be installed in the battery box as needed.

[0039] As shown in Figure 1, the battery pack may also include a circuit board assembly 120. The circuit board assembly 120 includes a body 121 and a plug 122. The body 121 covers the top of multiple batteries and can be used to monitor and manage the battery status. The plug 122 is connected to one end of one side surface of the body 121 and can be used to connect to an external connector to transmit electrical signals. For example, the plug 122 can be connected to the BMS in the battery box to transmit the collected temperature, voltage and other information to the BMS.

[0040] As shown in Figure 1, the battery pack may further include a bracket 130, which is disposed between the main body 121 and the mounting beam 110. The aforementioned insert 122 protrudes from the end of the main body 121 near the mounting beam 110. The insert 122 can be housed within the bracket 130, which limits and protects the insert 122. Specifically, the insert 122 may be disposed on the surface of the main body 121 facing the mounting beam 110 and housed within the bracket 130. The bracket 130 accommodates the bracket, restricting the position of the insert 122 and improving its stability.

[0041] As shown in Figure 1, the end of the bracket 130 near the body 121 is connected to the side surface of the body 121, which allows the bracket 130 to be relatively fixed to the body 121 and to support the body 121, thereby increasing the strength of the body 121. A limiting part 131 is provided at the end of the bracket 130 near the mounting beam 110. The limiting part 131 engages with the top wall 111 and the side wall 112, and is relatively fixed to the side wall 112. This allows the bracket 130 to be fixed to the mounting beam 110.

[0042] It should be noted that the battery pack provided in this application embodiment accommodates the plug-in 122 via a bracket 130, and a limiting part 131 is provided on the bracket 130 to fix the bracket 130 to the mounting beam 110. Compared with the method of directly fixing the plug-in 122 to the mounting beam 110, this can increase the stability of the plug-in 122 and avoid loosening of the plug-in 122 connection due to vibration or other reasons. At the same time, the limiting part 131 of the bracket 130 engages with the top wall 111 and the side wall 112 of the mounting beam 110. Compared with the bracket 130 being connected to the top wall 111 or the side wall 112 alone, this can increase the contact area between the bracket 130 and the mounting beam 110. Furthermore, the limiting part 131 and the mounting beam 110 can mutually limit each other in multiple directions. In this way, the installation stability between the bracket 130 and the mounting beam 110 can be effectively improved, further enhancing the stability of the plug-in 122.

[0043] Figure 2 is a schematic diagram of the bracket and plug-in provided in an exemplary embodiment of this application from a first-view perspective. As shown in Figures 1 and 2, the limiting part 131 may include a bent mounting wall 1311 and a limiting wall 1312, which abut against the top wall 111 and the side wall 112 of the mounting beam 110, respectively. Specifically, the mounting wall 1311 is disposed on the side of the bracket 130 away from the body 121, facilitating the abutment between the mounting wall 1311 and the top wall 111. The limiting wall 1312 extends from the edge of the mounting wall 1311 toward the mounting beam 110, facilitating the abutment between the limiting wall 1312 and the side wall 112. By bending the mounting wall 1311 and the limiting wall 1312, the contact area between the limiting part 131 and the mounting beam 110 can be increased, improving the connection reliability.

[0044] Figure 3 is a schematic diagram of the structure of the mounting beam provided in an exemplary embodiment of this application. As shown in Figures 1 to 3, the limiting wall 1312 is provided with a first mating hole 1313, and the side wall 112 is provided with a second mating hole 113. The battery pack may also include a fastener 140, which is detachably fitted into the first mating hole 1313 and the second mating hole 113 along a preset direction (specifically referring to the X-axis direction in Figure 1). In this way, the fastener 140 can fix the limiting wall 1312 and the side wall 112, thereby fixing the bracket 130 on the mounting beam 110.

[0045] In one embodiment, the fastener 140 may include bolts, screws, studs, etc.

[0046] In one embodiment, there are multiple first mating holes 1313, and the number of second mating holes 113 is the same as the number of first mating holes 1313, and they correspond one-to-one. Each set of corresponding first mating holes 1313 and second mating holes 113 is equipped with fasteners 140, which can further improve the installation stability between the bracket 130 and the mounting beam 110.

[0047] Specifically, by fixing the limiting wall 1312 to the side wall 112, the bracket 130 can be fixed on one side of the mounting beam 110 along the X-axis direction. This allows for pre-positioning in the X-direction during installation and simultaneous fastening of the bracket 130 to the mounting beam 110 in the X-axis direction, improving installation convenience and achieving limiting in the X-axis direction.

[0048] As shown in Figures 2 and 3, the mounting wall 1311 is provided with a protrusion 132, and the top wall 111 is provided with a first limiting hole 114. The protrusion 132 cooperates with the first limiting hole 114 to limit the position. On the one hand, during the process of assembling the bracket 130 onto the mounting beam 110, the protrusion 132 and the first limiting hole 114 cooperate to quickly position the mounting position of the bracket 130, improving the assembly efficiency. On the other hand, after the protrusion 132 cooperates with the first limiting hole 114, it can play a certain limiting role, preventing the bracket 130 from detaching from the mounting beam 110 radially along the first limiting hole 114. Specifically, through the cooperation between the limiting wall 1312 and the side wall 112, and the cooperation between the protrusion 132 and the first limiting hole 114, the assembly position can be quickly and accurately positioned in the X, Y, and Z axis directions, so as to facilitate the alignment of the first mating hole 1313 and the second mating hole 113 and improve the assembly efficiency. After the positioning is completed, the bracket 130 is fixed to the mounting beam 110 along the X direction by the fastener 140, which further improves the assembly efficiency.

[0049] In one embodiment, the diameter of the first limiting hole 114 is larger than the maximum diameter of the protrusion 132. That is, after the protrusion 132 mates with the first limiting hole 114, there is a gap between the protrusion 132 and the inner wall of the first limiting hole 114, allowing the protrusion 132 to move radially along the first limiting hole 114. Therefore, the bracket 130 and the mounting beam 110 can move radially relative to each other along the first limiting hole 114. This facilitates accurate adjustment of the mounting position of the bracket 130 on the mounting beam 110, improves the assembly accuracy of the bracket 130, and avoids installation failures due to tolerances.

[0050] In one embodiment, after the protrusion 132 is inserted into the first limiting hole 114, along the height direction of the mounting beam 110, the bottom surface of the protrusion 132 is higher than the top surface of the first mating hole 1313, that is, the projections of the protrusion 130 and the first mating hole 1313 in the X direction do not overlap. In this way, when the protrusion 132 passes through the first limiting hole 114 and the fastener 140 passes through the first mating hole 1313, there will be no interference between the protrusion 132 and the fastener 140.

[0051] Figure 4 is a structural schematic diagram of the bracket and plug-in provided in an exemplary embodiment of this application from a second perspective. As shown in Figures 2 and 4, a thinning region 133 is provided on the side of the limiting wall 1312 away from the side wall 112. The thinning region 133 includes a fastening surface 1331 and a connecting surface 1332 that are connected to each other. The fastening surface 1331 is parallel to the side plate. One end of the connecting surface 1332 is connected to the fastening surface 1331 at an angle, and the other end is connected to the side of the bracket 130. In this way, since the connecting surface 1332 and the fastening surface 1331 are connected at an angle, when the fastener 140 is engaged with the first mating hole 1313, the end of the fastener 140 can be accommodated in the thinning area 133. That is, the end of the fastener 140 will not protrude relative to the side wall 112 of the bracket 130 (or the protrusion length of the end of the fastener 140 relative to the side wall 112 of the bracket 130 is short). This can effectively prevent the fastener 140 from being bumped by other objects. On the one hand, it can extend the service life of the fastener 140. On the other hand, it can reduce the probability of the fastener 140 loosening and ensure the assembly stability between the fastener 140 and the first mating hole 1313.

[0052] In one embodiment, the angle between the connecting surface 1332 and the fastening surface 1331 can be an obtuse angle.

[0053] As shown in Figure 2, a recessed receiving groove 135 is provided on the side of the bracket 130 near the body 121. The receiving groove 135 can be used to accommodate the aforementioned plug-in 122 and can protect the plug-in 122. In addition, the receiving groove 135 can make full use of the space in the height direction of the bracket 130 (refer to the Z-axis direction in Figures 1 and 2), thereby improving the space utilization rate of the battery pack in the height direction.

[0054] As shown in Figure 2, the receiving groove 135 has an opening 136 on one side wall 112 near the limiting wall 1312. This opening 136 facilitates the exposure of the insertion interface of the plug-in 122, allowing the external connector to connect to the plug-in 122 along a preset direction, thus improving the assembly efficiency between the external connector and the plug-in 122. The preset direction can be the X-axis direction. The insertion direction of the plug-in 122 is the same as the fastening direction of the fastener 140, ensuring that both the fastening of the fastener 140 and the insertion of the plug-in 122 are located on one side of the mounting beam 110. This improves the space utilization inside the battery box and increases the energy density of the battery pack.

[0055] It should be noted that since the external connector is connected to the plug 122 in a preset direction, and the side wall 112 can limit the limiting wall 1312 in a direction opposite to the preset direction, the insertion direction of the external connector is opposite to the abutment direction of the side wall 112 against the limiting wall 1312. In this way, the bracket 130 is less likely to become loose during the connection between the external connector and the plug 122, which can improve the stability of the bracket 130 during the connection between the external connector and the plug 122.

[0056] As shown in Figure 2, the bottom of the receiving groove 135 is provided with multiple raised ribs 137, which together abut against the plug-in 122. In this way, the multiple raised ribs 137 can prevent the plug-in 122 from directly contacting the bottom wall of the bracket 130, thus playing a certain buffering role. The area between two adjacent raised ribs 137 can serve as a cooling channel, using cool air to dissipate heat from the bottom wall of the plug-in 122, improving the heat dissipation efficiency of the plug-in 122 and alleviating the problem of excessive local temperature of the plug-in 122.

[0057] Figure 5 is a structural schematic diagram of the bracket and plug-in provided in an exemplary embodiment of this application from a third-person perspective. As shown in Figures 2 and 5, the receiving groove 135 includes two first groove walls 1351 and a second groove wall 1352 connecting the two first groove walls 1351. The aforementioned opening 136 can be formed between the two first groove walls 1351. The second groove wall 1352 can close the plug-in 122 on the side opposite to the opening 136 to prevent the plug-in 122 from being interfered with by other components.

[0058] As shown in Figure 2, the outer wall of the first groove wall 1351 is provided with multiple reinforcing ribs 1353. The multiple reinforcing ribs 1353 can increase the structural strength of the first groove wall 1351 and improve the problem that the first groove wall 1351 is easily bent.

[0059] As shown in Figures 1, 2, and 5, one end of each of the multiple reinforcing ribs 1353 abuts against the top wall 111 of the mounting beam 110, and the other ends are connected to each other and abut against the body 121. This increases the contact area between the first groove wall 1351 and the body 121, improves the assembly stability between the first groove wall 1351 and the body 121, and enhances the strength of the body 121 through the bracket 130, preventing damage to the body 121 during the insertion of the plug-in 122 or under vibration or impact.

[0060] In one embodiment, there are multiple brackets 130, which are distributed along the length of the mounting beam 110 (specifically referring to the Y-axis direction in Figure 1). The multiple brackets 130 can be used to accommodate different plugs 122. The limiting walls 1312 of the multiple brackets 130 abut against the same side wall 112 of the mounting beam 110. In this way, the utilization rate of the side wall 112 of the mounting beam 110 can be improved, the installation of multiple brackets 130 can be facilitated, and the space inside the battery pack can be effectively saved.

[0061] Figure 6 is a schematic diagram of the structure of the body provided in an exemplary embodiment of this application. As shown in Figures 2 and 6, the bracket 130 is provided with a connecting post 134 on the side near the body 121, and a second limiting hole 123 is provided at one end of the side surface of the body 121. The connecting post 134 cooperates with the second limiting hole 123 to fix the bracket 130 and the body 121 relatively, so as to prevent the bracket 130 and the body 121 from moving relative to each other.

[0062] In one embodiment, there are four connecting posts 134, which are respectively disposed at the four top corners of the bracket 130. Correspondingly, there are four second limiting holes 123, which are respectively engaged with the four connecting posts 134.

[0063] Figure 7 is a schematic diagram of the structure of the body and the partition provided in an exemplary embodiment of this application. Figure 8 is a schematic diagram of the structure of the partition provided in an exemplary embodiment of this application. As shown in Figures 6 to 8, the end of the body 121 is bent to form a U-shaped groove 124, and a partition 125 is provided inside the U-shaped groove 124. In this way, the partition 125 can enhance the structural strength of the end of the body 121 (since the body 121 is generally a flexible structure).

[0064] As shown in Figures 6 to 8, the U-shaped groove 124 is provided with a second limiting hole 123 on both sides. Correspondingly, the partition 125 is provided with a third limiting hole 126. The connecting post 134 can be fitted with the second limiting hole 123 and the third limiting hole 126. The connecting post 134 can fix the bracket 130, the partition 125 and the body 121 relatively, so that the body 121, the partition 125, the plug 122 and the bracket 130 are formed as one unit.

[0065] It should be understood that the partition 125 has higher structural strength than the body 121, and the assembly stability between the partition 125 and the connecting column 134 is higher. Therefore, the partition 125 can enhance the connection strength and assembly stability between the bracket 130 and the body 121, and further improve the stability of the plug-in 122 connection.

[0066] In one embodiment, the number of connecting posts 134, second limiting holes 123, and third limiting holes 126 are the same.

[0067] This application also provides an electrical device that includes a battery pack as described in the previous embodiment and has all the functions of the battery pack.

[0068] The beneficial effects of the electrical equipment provided in this application embodiment can be compared with the beneficial effects of the aforementioned battery pack.

[0069] In one embodiment, the aforementioned electrical equipment includes the aforementioned battery pack and is capable of being powered by the aforementioned battery pack. The aforementioned electrical equipment may be a vehicle, mobile phone, portable device, laptop, ship, spacecraft, electric toy, power tool, energy storage device, amusement equipment, elevator, and lifting equipment, etc. Vehicles may be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles; new energy vehicles may be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, or electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.; energy storage devices may be energy storage walls, base station energy storage, container energy storage, etc.; amusement equipment may be a carousel, a drop tower, etc.

[0070] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0071] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0072] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0073] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0074] The above description has been given for illustrative and descriptive purposes. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A battery pack, characterized in that, include: A battery box is provided with a mounting beam (110), the mounting beam (110) including a top wall (111) and a side wall (112) connected to each other; a plurality of batteries are stacked in the battery box along a predetermined direction, and the plurality of batteries are disposed on at least one side of the mounting beam (110); a circuit board assembly (120) includes a body (121) and a plug (122) connected to one end of a surface of the body (121), the body (121) covering the top cover of the plurality of batteries, and the plug (122) protruding from the body (121). The bracket (130) is located between the body (121) and the mounting beam (110) to accommodate the plug (122). The bracket (130) is connected to the side surface of the body (121) at one end near the body (121). The bracket (130) is provided with a limiting part (131) at one end near the mounting beam (110). The limiting part (131) engages with the top wall (111) and the side wall (112) and is fixed relative to the side wall (112).

2. The battery pack according to claim 1, characterized in that, The limiting part (131) includes a bent mounting wall (1311) and a limiting wall (1312). The mounting wall (1311) is disposed on the side of the bracket (130) away from the body (121) to abut against the top wall (111). The limiting wall (1312) extends from the edge of the mounting wall (1311) toward the mounting beam (110) to abut against the side wall (112). The limiting wall (1312) is provided with a first mating hole (1313), and the side wall (112) is provided with a second mating hole (113). The battery pack also includes a fastener (140), which is detachably fitted into the first mating hole (1313) and the second mating hole (113) along the preset direction to fix the bracket (130).

3. The battery pack according to claim 2, characterized in that, The mounting wall (1311) is provided with a protrusion (132), and the top wall (111) is provided with a first limiting hole (114). The protrusion (132) is matched with the first limiting hole (114) for limiting. The diameter of the first limiting hole (114) is larger than the maximum diameter of the protrusion (132) so as to realize the relative movement of the bracket (130) and the mounting beam (110) along the radial direction of the first limiting hole (114). Along the height direction of the mounting beam (110), the bottom surface of the protrusion (132) is higher than the top surface of the first mating hole (1313).

4. The battery pack according to claim 2, characterized in that, The limiting wall (1312) has a thinning area (133) recessed on the side opposite to the side wall (112). The thinning area (133) includes a fastening surface (1331) and a connecting surface (1332) that are connected to each other. The fastening surface (1331) is parallel to the side wall (112). One end of the connecting surface (1332) is connected to the fastening surface (1331) at an angle, and the other end is connected to the side of the bracket (130).

5. The battery pack according to claim 2, characterized in that, The bracket (130) has a connecting post (134) on one side near the body (121), and a second limiting hole (123) is provided at one end of the side surface of the body (121). The connecting post (134) cooperates with the second limiting hole (123) to fix the bracket (130) to the body (121).

6. The battery pack according to claim 5, characterized in that, The end of the body (121) is bent to form a U-shaped groove (124). The two sides of the U-shaped groove (124) are provided with the second limiting hole (123). A partition (125) is provided inside the U-shaped groove (124). The partition (125) is provided with a third limiting hole (126). The connecting post (134) is engaged with the second limiting hole (123) and the third limiting hole (126).

7. The battery pack according to claim 2, characterized in that, The bracket (130) has a recessed receiving groove (135) on the side near the body (121) for accommodating the plug (122). The receiving groove has an opening (136) on the side wall (112) near the limiting wall (1312) to expose the insertion interface of the plug (122) so that the external connector can be connected to the plug (122) along the preset direction.

8. The battery pack according to claim 7, characterized in that, The bottom of the receiving groove (135) is provided with multiple raised ribs (137), and the multiple raised ribs (137) abut against the plug-in (122); the receiving groove (135) includes two first groove walls (1351) forming the opening (136) and a second groove wall (1352) connecting the two first groove walls (1351). The outer wall of the first groove wall (1351) is provided with multiple reinforcing ribs (1353). One end of the multiple reinforcing ribs (1353) abuts against the top wall (111), and the other end is connected to each other to abut against the body (121). The second groove wall (1352) is used to close the plug-in (122) on the side away from the opening (136).

9. The battery pack according to claim 2, characterized in that, The number of brackets (130) is multiple, and the multiple brackets (130) are distributed along the length direction of the mounting beam (110); the limiting wall (1312) of the multiple brackets (130) abuts against the same side wall (112).

10. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1 to 9.

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