Battery and electric device

Abstract

The utility model relates to a battery and a power utilization device, and belongs to the technical field of battery manufacturing. The battery includes: a case; the battery module is arranged in the box body and comprises a plurality of battery monomers, a bus bar, an electrical module, a flexible circuit board, a low-voltage connector, a high-voltage connector and a first connecting copper bar; the connecting support is arranged in the box body and provided with a first groove, a second groove and a third groove, at least part of the first connecting copper bar is inserted in the first groove, the low-voltage connector is fixed in the second groove, and the high-voltage connector is fixed in the third groove. The utility model further provides a power utilization device which comprises the battery. Due to the fact that the connecting support is simple in structure and can be fixedly connected with the convergence piece, the low-voltage connector, the high-voltage connector and other parts, the battery and the electric device have high energy density and safety performance.

Description

Technical Field

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

[0002] In recent years, with the increasing market share of electric vehicles, the market for power batteries has also been expanding. The development of the industry has also placed higher demands on the performance of power batteries. Optimizing battery structure and improving energy density, while ensuring safety performance, is also a development direction.

[0003] Currently, battery packs typically have various connecting brackets inside to help fix the positions of various components and wiring harnesses. Optimizing the structure of these connecting brackets while meeting basic fixing functions, making them easy to manufacture and mold while meeting strength requirements, and integrating multiple functions will improve the energy density and safety performance of individual battery cells. Utility Model Content

[0004] Therefore, this application proposes a battery and an electrical device, whose connecting bracket has a simple structure, is easy to manufacture and form, and can fix and connect components such as busbars, low-voltage connectors and high-voltage connectors, and has high energy density and safety performance.

[0005] The battery according to a first aspect embodiment of this application includes: a housing; a battery module disposed inside the housing, comprising multiple battery cells, a busbar, an electrical module, a flexible circuit board, a low-voltage connector, a high-voltage connector, and a first connecting copper busbar, wherein the busbar is used to electrically connect two adjacent battery cells and to connect with the high-voltage connector, the low-voltage connector is mounted on the flexible circuit board, and the first connecting copper busbar extends from the electrical module; and a connecting bracket disposed inside the housing, having a first groove, a second groove, and a third groove, wherein the first connecting copper busbar is at least partially inserted into the first groove, the low-voltage connector is fixed in the second groove, and the high-voltage connector is fixed in the third groove.

[0006] Optionally, multiple second grooves are provided, and at least one second groove includes a first cavity and a second cavity, wherein the first cavity is used to fix the low-voltage connector and the second cavity is used to avoid the flexible circuit board.

[0007] Optionally, the surface of the high-voltage connector is lower than the surface of the third recess, and the battery further includes an insulating cover that covers the high-voltage connector to insulate and isolate the high-voltage connector from the interior of the third recess.

[0008] Optionally, the bottom wall of the first groove is provided with a first opening, the side wall of the first groove is provided with a second opening, one end of the first connecting copper busbar passes through the first opening to be electrically connected to the electrical module, and the other end passes through the second opening to extend to the outside.

[0009] Optionally, the bottom wall of the third groove is provided with a third opening, and the battery module further includes a second connecting copper busbar, one end of which is connected to the high-voltage connector, and the other end passes through the third opening and is electrically connected to the electrical module.

[0010] Optionally, the battery further includes an elastic locking member, which is engaged with the first connecting copper busbar, and the two side surfaces of the elastic locking member abut against the inner wall of the first groove, respectively.

[0011] Optionally, the electrical module is disposed on one side of the plurality of battery cells in the horizontal direction, and the connecting bracket is disposed on the upper and lower sides of the electrical module respectively.

[0012] Optionally, the connecting bracket on one side of the electrical module includes two sub-connecting brackets, which are spliced ​​together to form a wire harness hole at the splice point, and the wire harness hole is used for the wire harness of the electrical module to pass through.

[0013] Optionally, the connecting bracket includes a first surface and a second surface disposed opposite to each other, the first groove, the second groove, and the third groove are formed by recesses in the first surface, and the first groove, the second groove, and the third groove are spaced apart along the length direction of the connecting bracket; and / or

[0014] The connecting bracket includes a first surface and a second surface disposed opposite to each other, and a boss structure is formed by a protrusion in the middle of the second surface. The battery also includes a sealing gasket, which is sleeved on the boss structure.

[0015] The electrical device according to the second aspect of this application includes the battery described in the first aspect of this application, the battery being used to provide electrical energy to the electrical device.

[0016] Compared to existing technologies, the advantages of this solution are as follows:

[0017] In the battery of this application embodiment, the connecting bracket fixes the first connecting copper busbar through the first groove, fixes the low-voltage connector through the second groove, and fixes the high-voltage connector through the third groove. The function of fixing and installing the first connecting copper busbar, the low-voltage connector and the high-voltage connector is integrated by using a connecting bracket, which simplifies the internal structure of the battery and has high energy density and safety performance.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the battery structure provided in an embodiment of this application;

[0021] Figure 2 A first-view assembly diagram of the battery connection bracket and electrical module provided in an embodiment of this application;

[0022] Figure 3 A second-view assembly diagram of the battery connection bracket and electrical module provided in an embodiment of this application;

[0023] Figure 4 for Figure 3 AA cross-section view;

[0024] Figure 5 A schematic diagram of the structure related to the elastic latching component of the battery provided in the embodiments of this application;

[0025] Figure 6 A first-view structural schematic diagram of the battery connection bracket provided in an embodiment of this application;

[0026] Figure 7 A second-view structural schematic diagram of the battery connection bracket provided in an embodiment of this application;

[0027] Figure 8 for Figure 7 A magnified view of a section at point B in the middle;

[0028] Figure 9 This is a schematic diagram of the assembly of the battery connection bracket and sealing gasket provided in an embodiment of this application.

[0029] Icons: 100-Battery; 110-Casing; 120-Battery Module; 121-Battery Cell; 122-Bus Terminal; 123-Electrical Module; 1231-Wire Harness; 124-Flexible Circuit Board; 125-Low-Voltage Connector; 126-High-Voltage Connector; 127-First Connecting Copper Busbar; 128-Second Connecting Copper Busbar; 130-Connecting Bracket; 131-First Surface; 132-Second Surface; 133-First Groove; 13 31-First opening; 1332-Second opening; 134-Second groove; 1341-First cavity; 1342-Second cavity; 135-Third groove; 1351-Third opening; 136-Boss structure; 140-Insulating cover; 150-Elastic locking element; 160-Sealing gasket; 171-First connecting bracket; 172-Second connecting bracket; 173-Third connecting bracket; 174-Wire harness hole; 175-Snap-fit ​​structure. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] like Figure 1 , Figure 2 and Figure 6As shown, in some embodiments of this application, the battery 100 includes a housing 110, a battery module 120, and a connecting bracket 130. The battery module 120 is disposed inside the housing 110 and includes multiple battery cells 121, a busbar 122, an electrical module 123, a flexible circuit board 124, a low-voltage connector 125, a high-voltage connector 126, and a first connecting copper busbar 127. The busbar 122 is used to electrically connect two adjacent battery cells 121 and to connect with the high-voltage connector 126. The low-voltage connector 125 is mounted on the flexible circuit board 124, and the first connecting copper busbar 127 extends from the electrical module 123. The connecting bracket 130 is disposed inside the housing 110 and has a first groove 133, a second groove 134, and a third groove 135. The first connecting copper busbar 127 is at least partially inserted into the first groove 133, the low-voltage connector 125 is fixed in the second groove 134, and the high-voltage connector 126 is fixed in the third groove 135.

[0033] The housing 110 has a square structure, with its height in the Z direction, length in the X direction, and width in the Y direction. Multiple busbars 122 are provided. Some busbars 122 are electrically connected to two adjacent battery cells 121, while others are electrically connected to the battery cell 121 at the middle of a row of battery cells 121. The other end of the busbar is connected to the high-voltage connector 126. The connecting bracket 130 can be made of insulating materials such as silicone or plastic.

[0034] like Figure 2 and Figure 6 As shown, the length direction of the connecting bracket 130 extends along the X direction, and the first groove 133, the second groove 134 and the third groove 135 are spaced apart along the X direction on the same side surface of the connecting bracket 130.

[0035] In the battery 100 of this application embodiment, the connecting bracket 130 fixes the first connecting copper busbar 127 through the first groove 133, fixes the low-voltage connector 125 through the second groove 134, and fixes the high-voltage connector 126 through the third groove 135. The function of fixing and installing the first connecting copper busbar 127, the low-voltage connector 125 and the high-voltage connector 126 is integrated by using a single connecting bracket 130, which simplifies the internal structure of the battery 100 and has higher energy density and safety performance.

[0036] like Figure 2 and Figure 6 As shown, in some embodiments of this application, multiple second grooves 134 are provided, and at least one second groove 134 includes a first cavity 1341 and a second cavity 1342. The first cavity 1341 is used to fix the low-voltage connector 125, and the second cavity 1342 is used to avoid the flexible circuit board 124.

[0037] For example, there are four second grooves 134, with three second grooves 134 spaced apart along the X direction. Two of the second grooves 134 include a first cavity 1341 and a second cavity 1342, while the other two second grooves 134 only include space for fixing the low-voltage connector 125. In other embodiments, the number of second grooves 134 may also be two, three, etc.

[0038] The flexible circuit board 124 is connected to the surface of the busbar 122 or the battery cell 121 through the acquisition terminal to acquire temperature or voltage information at that location. The end of the flexible circuit board 124 is connected to a low-voltage connector 125, through which the acquired information is output.

[0039] This configuration allows for the matching of the low-voltage connector 125 and the portion of the flexible circuit board 124 connected to the low-voltage connector 125, making full use of the space inside the housing 110 and increasing the energy density of the battery 100.

[0040] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments of this application, the surface of the high-voltage connector 126 is lower than the surface of the third groove 135, and the battery 100 also includes an insulating cover 140 that covers the high-voltage connector 126 to insulate the high-voltage connector 126 from the interior of the third groove 135.

[0041] The high-voltage connector 126 is detachably mounted in the third groove 135. For example, the bottom wall of the third groove 135 is provided with a mounting hole, and the high-voltage connector 126 is fixed to the third groove 135 by a threaded part; the low-voltage connector 125 is fixed to the second groove 134 by adhesive or snap-fit.

[0042] The third groove 135 is formed by recessing the first surface 131. The bottom surface of the high-voltage connector 126 along the Z direction abuts against the bottom wall of the third groove 135, and the top surface is lower than the first surface 131. The insulating cover 140 covers the top surface of the high-voltage connector 126 in the Z direction to insulate and isolate the high-voltage connector 126 inside the third groove 135.

[0043] The insulating cover 140 can be made of plastic or other insulating materials. The gap between the insulating cover 140 and the top surface of the high-voltage connector 126 is used to accommodate the second connecting copper busbar 128. One end of the second connecting copper busbar 128 is connected to the high-voltage connector 126, and the other end is connected to the electrical module 123.

[0044] With this configuration, the high-voltage connector 126 is insulated and isolated inside the third groove 135 by the insulating cover 140, thus preventing the high-voltage connector 126 from short-circuiting with other conductive parts inside the battery 100.

[0045] In other embodiments, the high-voltage connector 126 can also be insulated and isolated in other ways, such as by using insulating adhesive encapsulation, applying an insulating film, etc.

[0046] like Figure 6 and Figure 7 As shown, in some embodiments of this application, the bottom wall of the first groove 133 is provided with a first opening 1331, the side wall of the first groove 133 is provided with a second opening 1332, one end of the first connecting copper busbar 127 passes through the first opening 1331 to be electrically connected to the electrical module 123, and the other end passes through the second opening 1332 to extend outward.

[0047] With this configuration, the first connecting copper busbar 127 can be fixed while allowing both ends of the first connecting copper busbar 127 to extend from the first groove 133 for conductive connection to the outside.

[0048] like Figure 7 As shown, in some embodiments of this application, the bottom wall of the third groove 135 is provided with a third opening 1351, and the battery module 120 also includes a second connecting copper busbar 128. One end of the second connecting copper busbar 128 is connected to the high voltage connector 126, and the other end passes through the third opening 1351 and is electrically connected to the electrical module 123.

[0049] The connecting bracket 130 includes a first surface 131 and a second surface 132 disposed opposite to each other along the Z direction. A third groove 135 is formed by recessing the first surface 131. A third opening 1351 extends from the bottom wall of the third groove 135 to the second surface 132. A second connecting copper busbar 128 electrically connects the high-voltage connector 126 and the electrical module 123.

[0050] With this configuration, the other end of the second connecting copper busbar 128 can be allowed to extend from the third groove 135 to be electrically connected to the electrical module 123 while the second connecting copper busbar 128 is fixed.

[0051] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments of this application, the battery 100 further includes an elastic locking member 150, which is engaged with the first connecting copper busbar 127, and the two side surfaces of the elastic locking member 150 respectively abut against the inner wall of the first groove 133.

[0052] The elastic locking component 150 is embedded inside the first groove 133 and is made of elastic material such as silicone. The elastic locking component 150 can be a U-shaped structure that clamps the first connecting copper busbar 127 from the top or bottom, or it can be a sleeve structure that is sleeved on the first connecting copper busbar 127.

[0053] This configuration increases the sturdiness of the assembly between the first connecting copper busbar 127 and the connecting bracket 130, fills the gap between the first connecting copper busbar 127 and the inner wall of the first groove 133, and prevents the first connecting copper busbar 127 from shaking inside the first groove 133.

[0054] like Figure 4 As shown, in some embodiments of this application, the electrical module 123 is disposed on one side of the plurality of battery cells 121 in the horizontal direction, and the upper and lower sides of the electrical module 123 are respectively provided with connecting brackets 130.

[0055] Specifically, the height direction of the housing 110 is the Z direction, the connecting bracket 130 is located near the electrical module 123, the upper side of the electrical module 123 is provided with two spliced ​​connecting brackets 171 and 172, and the lower side is provided with a third connecting bracket 173.

[0056] This configuration allows for efficient use of the space inside the battery 100 housing 110, and allows for the fixing of corresponding components on the upper and lower sides of the electrical module 123.

[0057] like Figure 4 As shown, in some embodiments of this application, the connecting bracket 130 on one side of the electrical module 123 includes two sub-connecting brackets. The two sub-connecting brackets are spliced ​​together, and the splice of the two sub-connecting brackets forms a wire harness hole 174, which is used for the wire harness 1231 of the electrical module 123 to pass through.

[0058] The two sub-connecting brackets are the first connecting bracket 171 and the second connecting bracket 172. The first connecting bracket 171 and the second connecting bracket 172 are spliced ​​together along the X direction. The splicing surfaces of the first connecting bracket 171 and the second connecting bracket 172 are recessed along the Z direction to form arc-shaped grooves. The two arc-shaped grooves are joined together to form a wire harness hole 174.

[0059] This configuration, which uses splicing to form the wire harness hole 174, simplifies the construction of the connecting bracket 130 and can fix the wire harness 1231.

[0060] In other embodiments, a wire harness hole 174 may also be formed by perforating the connecting bracket 130.

[0061] like Figure 6As shown, in some embodiments of this application, the connecting bracket 130 includes a first surface 131 and a second surface 132 disposed opposite to each other, a first groove 133, a second groove 134 and a third groove 135 formed by recesses in the first surface 131, and the first groove 133, the second groove 134 and the third groove 135 are spaced apart along the length direction of the connecting bracket 130.

[0062] The length direction of the connecting bracket 130 is the X direction, and the first groove 133, the second groove 134, and the third groove 135 are spaced apart along the X direction. For example, the first connecting bracket 171 and the second connecting bracket 172 are spliced ​​together along the X direction. The first connecting bracket 171 is provided with the first groove 133, the third groove 135, and the second groove 134 in sequence, and the second connecting bracket 172 is provided with two second grooves 134 and one third groove 135 in sequence. The splicing point of the first connecting bracket 171 and the second connecting bracket 172 forms a wire harness hole 174.

[0063] This configuration allows for compatibility with the arrangement of the low-voltage connector 125, the high-voltage connector 126, the first connecting copper busbar 127, and the second connecting copper busbar 128, thereby reducing the space occupied by the connecting bracket 130 while securing each component.

[0064] like Figure 7 , Figure 8 and Figure 9 As shown, in some other embodiments of this application, the connecting bracket 130 includes a first surface 131 and a second surface 132 disposed opposite to each other. The middle part of the second surface 132 protrudes to form a boss structure 136. The battery 100 also includes a sealing gasket 160, which is sleeved on the boss structure 136.

[0065] The boss structure 136 protrudes from the middle of the second surface 132 along the Z direction, and leaves space at the edge for setting a sealing gasket 160. The sealing gasket 160 is fitted onto the boss structure 136 and adheres to the second surface 132.

[0066] This configuration increases the sealing performance of the second surface 132 of the connecting bracket 130, effectively reducing the possibility of foaming material penetrating into the electrical module 123 during the subsequent foaming and encapsulation process, thereby improving the safety performance of the electrical module 123.

[0067] Some embodiments of the present application include an electrical device, which includes a battery 100 for providing electrical energy to the electrical device.

[0068] Electrical devices can include automobiles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Automobiles can be gasoline-powered, natural gas-powered, or new energy vehicles; new energy vehicles can 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, and 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. This application does not impose any special limitations on the above-mentioned electrical devices.

[0069] Due to the characteristics of the battery 100 in this application embodiment, the power-consuming device in this application embodiment also has high energy density and safety performance.

[0070] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0071] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery, characterized by, include: Box (110); A battery module (120) is disposed inside the housing (110) and includes multiple battery cells (121), a busbar (122), an electrical module (123), a flexible circuit board (124), a low-voltage connector (125), a high-voltage connector (126), and a first connecting copper busbar (127). The busbar (122) is used to electrically connect two adjacent battery cells (121) and to connect with the high-voltage connector (126). The low-voltage connector (125) is mounted on the flexible circuit board (124). The first connecting copper busbar (127) is connected out from the electrical module (123). A connecting bracket (130) is disposed inside the housing (110) and has a first groove (133), a second groove (134) and a third groove (135). The first connecting copper busbar (127) is at least partially inserted into the first groove (133), the low-voltage connector (125) is fixed in the second groove (134), and the high-voltage connector (126) is fixed in the third groove (135).

2. The battery of claim 1, wherein, The second groove (134) is provided in multiple ways, and at least one of the second grooves (134) includes a first cavity (1341) and a second cavity (1342). The first cavity (1341) is used to fix the low-voltage connector (125), and the second cavity (1342) is used to avoid the flexible circuit board (124).

3. The battery of claim 1, wherein, The surface of the high-voltage connector (126) is lower than the surface of the third groove (135). The battery (100) also includes an insulating cover (140) that covers the high-voltage connector (126) to insulate the high-voltage connector (126) from the interior of the third groove (135).

4. The battery of claim 1, wherein, The bottom wall of the first groove (133) is provided with a first opening (1331), and the side wall of the first groove (133) is provided with a second opening (1332). One end of the first connecting copper busbar (127) passes through the first opening (1331) to be electrically connected to the electrical module (123), and the other end passes through the second opening (1332) to extend outward.

5. The battery of claim 1, wherein, The bottom wall of the third groove (135) is provided with a third opening (1351). The battery module (120) also includes a second connecting copper busbar (128). One end of the second connecting copper busbar (128) is connected to the high voltage connector (126), and the other end passes through the third opening (1351) and is electrically connected to the electrical module (123).

6. The battery of claim 1, wherein, The battery (100) also includes an elastic locking member (150), which is engaged with the first connecting copper busbar (127), and the two side surfaces of the elastic locking member (150) respectively abut against the inner wall of the first groove (133).

7. The battery of claim 1, wherein, The electrical module (123) is disposed on one side of the plurality of battery cells (121) in the horizontal direction, and the connecting bracket (130) is disposed on the upper and lower sides of the electrical module (123).

8. The battery of claim 1, wherein, The connecting bracket (130) on one side of the electrical module (123) includes two sub-connecting brackets. The two sub-connecting brackets are spliced ​​together, and the splice of the two sub-connecting brackets forms a wire harness hole (174). The wire harness hole (174) is used for the wire harness (1231) of the electrical module (123) to pass through.

9. The battery of claim 1, wherein, The connecting bracket (130) includes a first surface (131) and a second surface (132) disposed opposite to each other. The first groove (133), the second groove (134), and the third groove (135) are formed by recesses in the first surface (131). The first groove (133), the second groove (134), and the third groove (135) are spaced apart along the length direction of the connecting bracket (130); and / or The connecting bracket (130) includes a first surface (131) and a second surface (132) disposed opposite to each other. The second surface (132) protrudes in the middle to form a boss structure (136). The battery (100) also includes a sealing gasket (160), which is sleeved on the boss structure (136).

10. An electrical device, characterized by Includes a battery (100) as described in any one of claims 1 to 9, the battery (100) being used to provide electrical energy to the electrical device.

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