End plate, battery and electric device

Abstract

The utility model relates to an end plate, a battery and an electric device. The end plate is arranged on one side of the battery unit along the X direction, the end plate comprises an end plate main body, one side, far away from the battery unit along the X direction, of the end plate main body is convexly provided with at least one connecting and fixing seat, the connecting and fixing seat comprises a first fixing seat and a second fixing seat, the first fixing seat is used for assembling an output bar and a busbar, and the second fixing seat is used for assembling a signal transmission plug-in. According to the end plate, the battery and the electric device provided by the invention, the installation efficiency can be improved.

Description

Technical Field

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

[0002] Batteries, as the core component for energy storage and conversion, have been widely used in new energy vehicles, energy storage power stations and other fields.

[0003] In traditional batteries, to facilitate the fixing of output pins, busbars, and signal transmission components, a first mounting bracket for fixing the output pins and busbars, and a second mounting bracket for fixing the signal transmission components are usually provided inside the battery. Both the first and second mounting brackets are installed on the crossbeam of the battery casing by a snap-fit ​​method. This method of separately installing the first and second mounting brackets involves many steps during installation and has low installation efficiency. Utility Model Content

[0004] Therefore, it is necessary to provide an end plate, battery, and power supply device that can improve installation efficiency to address the above problems.

[0005] An end plate is disposed on one side of a battery cell along the X direction. The end plate includes an end plate body. At least one connecting fixing seat is protruding from the side of the end plate body away from the battery cell along the X direction. The connecting fixing seat includes a first fixing seat and a second fixing seat. The first fixing seat is used to assemble an output bus and a busbar, and the second fixing seat is used to assemble a signal transmission plug.

[0006] In some embodiments, the first fixing seat includes a first fixing groove formed in the connecting fixing seat, a frame wrapped around to form the first fixing groove, and a partition rib located in the first fixing groove. The partition rib is connected to the frame along the X direction and divides the first fixing groove into a first sub-fixing groove and a second sub-fixing groove.

[0007] The frame has a first notch and a second notch respectively on the side away from the end plate body along the X direction and corresponding to the positions of the first sub-fixed slot and the second sub-fixed slot. The output bus is inserted through the first notch and installed in the first sub-fixed slot, and the busbar is inserted through the second notch and installed in the second sub-fixed slot.

[0008] In some embodiments, the first sub-fixing groove is provided with a first fastening hole for installing and fastening a first fastener for fastening the output busbar, and the second sub-fixing groove is provided with a second fastening hole for installing and fastening a second fastener for fastening the busbar.

[0009] In some embodiments, the second fixing seat includes a second fixing groove formed in the connecting fixing seat, and a limiting rib forming the second fixing groove is wrapped around it;

[0010] The limiting rib has a third notch on the side away from the end plate body along the X direction. The third notch communicates with the second fixing groove. The signal transmission plug is installed in the second fixing groove, and the plug interface of the signal transmission plug is exposed in the third notch.

[0011] In some embodiments, the limiting rib is provided with a plurality of connecting posts protruding along the Z direction, and the connecting posts are used to position the signal acquisition circuit board that is electrically connected to the signal transmission plug-in.

[0012] The Z direction intersects the X direction.

[0013] In some embodiments, the bottom wall of the second fixing groove is higher than the bottom wall of the first fixing groove in the Z direction, and the plane where the opening of the second fixing groove is located is higher than the plane where the opening of the first fixing groove is located in the Z direction; wherein the Z direction intersects the X direction.

[0014] In some embodiments, two connecting fixing seats are spaced apart along the Y direction on the end plate body, and each connecting fixing seat includes a first fixing seat and a second fixing seat disposed on both sides of the first fixing seat;

[0015] The end plate body has clamping portions formed at both ends along the Y direction and between the two adjacent connecting fixing seats, and the end plate body is integrally formed with the connecting fixing seats;

[0016] Wherein, the Y direction intersects the X direction.

[0017] A battery, the battery comprising:

[0018] Battery housing,

[0019] The battery unit is located inside the battery housing;

[0020] As described in any of the above embodiments, the end plate body of the end plate is attached to one side of the battery cell along the X direction, and the first fixing seat and the second fixing seat are disposed on the side of the end plate body away from the battery cell.

[0021] The output bus and the busbar are mounted on the first mounting base and are both electrically connected to the battery cell; and

[0022] The signal transmission plug is mounted on the second mounting base.

[0023] In some embodiments, the battery includes a support end plate, which is disposed along the Z direction on one side of the connecting fixing seat facing the bottom surface of the battery box and is attached to the end plate body, and a buffer cavity is provided inside the support end plate.

[0024] The Z direction intersects the X direction.

[0025] An electrical device includes a battery as described in any of the above embodiments, the battery being used to provide electrical energy.

[0026] The aforementioned endplate, battery, and power device are designed with a connecting mounting base comprising a first mounting base and a second mounting base. Therefore, installing a single connecting mounting base simplifies the installation of both the first and second mounting bases. Compared to the existing method of separately installing the first and second mounting bases, this reduces installation steps and increases installation efficiency. The improvement in installation efficiency is particularly significant when fixing multiple output pins, multiple busbars, and multiple signal transmission modules, requiring the installation of multiple first and second mounting bases. Furthermore, integrating the first and second mounting bases into a single connecting mounting base reduces installation frequency, lowers the risk of assembly errors, and enhances installation reliability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the end plate, output bus, busbar, and signal transmission plug-in in one embodiment of this application;

[0028] Figure 2 for Figure 1 The diagram shows the structure of the end plate.

[0029] Figure 3 for Figure 2 An enlarged schematic diagram of a portion of structure A in the end plate shown;

[0030] Figure 4 for Figure 1 The diagram shows the structure of the connecting fixing seat in the end plate.

[0031] Figure 5 This is a schematic diagram of the battery structure after the top plate of the battery box is removed in one embodiment of this application;

[0032] Figure 6 for Figure 5 An enlarged schematic diagram of a portion of structure B in the battery shown;

[0033] Figure 7 for Figure 5 The battery shown is a cross-sectional view along the CC direction;

[0034] Figure 8 for Figure 7An enlarged schematic diagram of a local structure D in the battery shown;

[0035] Figure 9 for Figure 5 The diagram shown is a structural schematic of the battery after the battery casing and management system have been removed.

[0036] Figure 10 for Figure 9 The diagram shows an enlarged view of a local structure E in the battery.

[0037] Icon labels:

[0038] 100. Battery;

[0039] 10. End plate; 20. Support end plate; 30. Battery housing; 40. Battery cell; 50. Output busbar; 60. Busbar; 70. Signal transmission plug-in; 80. Management system;

[0040] 11. End plate body; 12. Connecting fixing seat; 121. First fixing seat; 1211. First fixing groove; 1211a. First sub-fixing groove; 1211b. Second sub-fixing groove; 1211c. First notch; 1211d. Second notch; 1212. Frame; 1213. Dividing rib; 1214. First fastening hole; 1215. Second fastening hole; 122. Second fixing seat; 1221. Second fixing groove; 1222. Third notch; 1223. Limiting rib; 1223a. Connecting column; 123. Clamping part; 124. Fixing platform;

[0041] 21. Buffer chamber;

[0042] 31. Base plate; 32. Side plate; 33. Receiving cavity;

[0043] 41. Battery cell. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0051] In traditional batteries, to facilitate the fixing of output pins, busbars, and signal transmission components, a first mounting bracket for fixing the output pins and busbars, and a second mounting bracket for fixing the signal transmission components are usually provided inside the battery. Both the first and second mounting brackets are installed on the crossbeam of the battery casing by a snap-fit ​​method. This method of separately installing the first and second mounting brackets involves many steps during installation and has low installation efficiency.

[0052] Please see Figures 1 to 9 To alleviate the above problems, this application provides an end plate 10, which is applied inside the battery 100 and disposed on one side of the battery cell 40 along the X direction. The end plate 10 includes an end plate body 11, and at least one connecting fixing seat 12 protrudes from the side of the end plate body 11 away from the battery cell 40 along the X direction. The connecting fixing seat 12 includes a first fixing seat 121 and a second fixing seat 122. The first fixing seat 121 is used to assemble the output bus 50 and the bus 60, and the second fixing seat 122 is used to assemble the signal transmission plug 70.

[0053] Among them, the battery unit 40 refers to the component that provides electrical energy in the battery 100. The battery unit 40 is formed by multiple battery cells 41 arranged in a matrix along the X and Y directions. All the battery cells 41 in the battery unit 40 can be connected in series, in parallel or in a mixed manner.

[0054] The Y direction intersects the X direction. Figure 1 , Figure 5 and Figure 9 For example, the X direction refers to the length direction of the battery cell 40, and the Y direction refers to the width direction of the battery cell 40.

[0055] Output bus 50 refers to the component used to output the current of battery 100. There are usually two output bus 50s: one positive output bus 50 and one negative output bus 50. The positive output bus 50 is connected to the positive output terminal of battery cell 40, and the negative output bus 50 is connected to the negative output terminal of battery cell 40. Bus 60 refers to the component that connects the battery cells 41 within battery cell 40 in series or in parallel. For example, bus 60 connects two battery 100 modules formed by the battery cells 41 within battery cell 40 in series, thereby achieving series connection of all battery cells 41 within battery cell 40. The number of bus 60s can be set according to requirements. Typically, both output bus 50 and bus 60 are copper busbars.

[0056] The signal transmission plug-in 70 is electrically connected between the signal acquisition circuit board inside the battery 100 and the management system 80 of the battery 100. The signal acquisition circuit board is used to acquire signals such as current, voltage, temperature, and humidity inside the battery 100. The signal transmission plug-in 70 is used to transmit the signals acquired by the signal acquisition circuit board to the management system 80, thereby facilitating the management system 80 to regulate the current, voltage, temperature, and humidity inside the battery 100. The number of signal transmission plug-ins 70 can be set according to requirements.

[0057] Since the output bus 50, bus 60 and signal transmission plug 70 are all live parts, the end cover body and the connecting fixing base 12 are generally made of insulating materials, such as polycarbonate (commonly known as PC plastic).

[0058] The connecting fixing base 12 and the end plate body 11 can be installed as a whole, or the connecting fixing base 12 and the end plate body 11 can be connected by a connector, such as a screw, pin, adhesive, etc.

[0059] There is at least one connecting bracket 12. The first bracket 121 of the connecting bracket 12 fixes one end of a bus 60 and an output bus 50. The second bracket 122 of the connecting bracket 12 fixes a signal transmission plug-in 70.

[0060] The number of the first fixing base 121 and the second fixing base 122 can be set according to actual needs. For example, the connecting fixing base 12 can include one first fixing base 121 and two second fixing bases 122, or it can include two first fixing bases 121 and two second fixing bases 122. The specific number can be set according to the needs. It is only necessary to ensure that all output pins 50, busbars 60 and signal transmission plug-ins 70 can be installed using the first fixing bases 121 and the second fixing bases 122.

[0061] In this application, the connecting mounting base 12 is designed to include a first mounting base 121 and a second mounting base 122. Therefore, installing one connecting mounting base 12 can achieve the installation of both the first mounting base 121 and the second mounting base 122. Compared with the prior art method of separately installing the first mounting base 121 and the second mounting base 122, the installation steps are reduced and the installation efficiency is high. In particular, when fixing multiple output pins 50, multiple busbars 60, and multiple signal transmission plugs 70, and requiring the installation of multiple first mounting bases 121 and multiple second mounting bases 122, the improvement in installation efficiency is even more significant. In addition, integrating the first mounting base 121 and the second mounting base 122 into a single connecting mounting base 12 can also reduce the installation frequency, reduce the risk of assembly errors, and make the installation more reliable.

[0062] Please refer to it again. Figures 1 to 4 In some optional embodiments, the first fixing base 121 includes a first fixing groove 1211 formed within the connecting fixing base 12, a frame 1212 that forms the first fixing groove 1211, and a partition rib 1213 located within the first fixing groove 1211. The partition rib 1213 is connected to the frame 1212 along the X direction and divides the first fixing groove 1211 into a first sub-fixing groove 1211a and a second sub-fixing groove 1211b. The frame 1212 has a first notch 1211c and a second notch 1211d respectively on the side of the frame 1212 away from the end plate body 11 along the X direction and corresponding to the positions of the first sub-fixing groove 1211a and the second sub-fixing groove 1211b. The output bus 50 is inserted through the first notch 1211c and installed in the first sub-fixing groove 1211a, and the bus 60 is inserted through the second notch 1211d and installed in the second sub-fixing groove 1211b.

[0063] Specifically, the connecting fixing base 12 includes a fixing platform 124, a frame 1212 is installed on the top side of the fixing platform 124 and is wrapped around to form a first fixing groove 1211, a partition rib 1213 extends along the X direction and is connected to the frame 1212 to divide the first fixing groove 1211 into a first sub-fixing groove 1211a and a second sub-fixing groove 1211b, an output row 50 is inserted through a first notch 1211c and installed in the first sub-fixing groove 1211a to achieve the positioning of the output row 50, and one end of the busbar 60 is inserted through a second notch 1211d and installed in the second sub-fixing groove 1211b to achieve the positioning of one end of the busbar 60, thereby facilitating the subsequent fixing of the output row 50 and the busbar 60.

[0064] In this application, mounting positions for the output port 50 and the busbar 60 are formed using a mounting platform 124, a frame 1212, and a partition rib 1213. The frame 1212 and the partition rib 1213 have a certain height to facilitate the positioning and installation of the output port 50 and the busbar 60. Furthermore, the partition rib 1213 also insulates and separates the output port 50 and the busbar 60 to prevent short circuits caused by contact between them, thus improving the safety of the battery 100.

[0065] Please refer to it again. Figures 1 to 3 Furthermore, in some optional embodiments, the first sub-fixing groove 1211a is provided with a first fastening hole 1214 for installing a first fastener for fastening the output bus 50, and the second sub-fixing groove 1211b is provided with a second fastening hole 1215 for installing a second fastener for fastening the bus 60.

[0066] As an example, the first and second fasteners can be screws, pins, or other components. Taking the example where both the first and second fasteners are screws, the first fastening hole 1214 and the second fastening hole 1215 are both threaded holes. In this embodiment, similarly, threaded holes are provided on both the output bus 50 and the bus 60. The first fastener engages with both the output bus 50 and the first fixed seat 121 through the threaded holes in both. The second fastener engages with both the bus 60 and the first fixed seat 121 through the threaded holes in both.

[0067] By setting the first fastener to cooperate with the first fastening hole 1214 and the second fastener to cooperate with the second fastening hole 1215, the stability and reliability of the installation of the output bus 50 and the bus 60 are improved, and the installation effect is good.

[0068] In some alternative embodiments, the second fixing seat 122 includes a second fixing groove 1221 formed in the connecting fixing seat 12, and a limiting rib 1223 forming the second fixing groove 1221; the limiting rib 1223 has a third notch 1222 on the side away from the end plate body 11 in the X direction, the third notch 1222 communicates with the second fixing groove 1221, the signal transmission plug 70 is installed in the second fixing groove 1221, and the plug interface of the signal transmission plug 70 is exposed in the third notch 1222.

[0069] Specifically, the limiting rib 1223 is installed on the top side of the fixing platform 124 and wraps around to form the second fixing groove 1221. The plug of the management system 80 is connected to the signal transmission plug-in 70 through the third notch 1222.

[0070] In this application, the mounting position of the signal transmission plug-in 70 is formed by the fixed platform 124 and the limiting rib 1223, and the limiting rib 1223 has a certain height to facilitate the limiting and installation of the signal transmission plug-in 70.

[0071] In some alternative embodiments, the limiting rib 1223 is provided with a plurality of connecting posts 1223a protruding along the Z direction. The connecting posts 1223a are used to position the signal acquisition circuit board that is electrically connected to the signal transmission plug-in 70.

[0072] The Z direction intersects with both the X and Y directions. Figure 1 , Figure 5 and Figure 9 For example, the Z direction is the height direction of the battery cell 40.

[0073] The limiting rib 1223 corresponds one-to-one with the signal acquisition circuit board and the signal transmission plug-in 70. The signal acquisition circuit board is installed on the top side of the battery unit 40 along the Z direction, and multiple connection holes are provided on the signal acquisition circuit board. All the connecting posts 1223a on the limiting rib 1223 correspond one-to-one with all the connection holes on the corresponding signal acquisition circuit. The connecting posts 1223a pass through the corresponding connection holes to realize the installation and positioning of the signal transmission plug-in 70, thereby reducing the risk of the connection between the two failing due to the movement of the signal acquisition circuit board relative to the signal transmission plug-in 70, and ensuring the reliability of the battery 100.

[0074] Please see Figure 4 In some optional embodiments, the bottom wall of the second fixing groove 1221 is higher than the bottom wall of the first fixing groove 1211 in the Z direction, and the plane containing the opening of the second fixing groove 1221 is higher than the plane containing the opening of the first fixing groove 1211 in the Z direction; wherein, the Z direction intersects the X direction. Specifically, as... Figure 4 As shown, the height difference between the bottom wall of the second fixing slot 1221 and the bottom wall of the first fixing slot 1211 in the Z direction is H1, and the height difference between the plane where the opening of the second fixing slot 1221 is located and the plane where the opening of the first fixing slot 1211 is located in the Z direction is H2. In this way, the output bus 50 and the signal transmission plug-in 70, as well as the bus 60 and the signal transmission plug-in 70, can be installed in a staggered manner without interfering with each other.

[0075] In some optional embodiments, two connecting fixing seats 12 are spaced apart along the Y direction on the end plate body 11. Each connecting fixing seat 12 includes a first fixing seat 121 and a second fixing seat 122 disposed on both sides of the first fixing seat 121. In this way, the output bus 50, bus 60 and signal transmission plug-in 70 can be distributed more evenly along the Y direction, avoiding mutual interference among the output bus 50, bus 60 and signal transmission plug-in 70.

[0076] In this embodiment, there are two output pins 50, namely a positive output pin 50 and a negative output pin 50, one busbar 60, and four signal transmission plug-ins 70. The positive output pin 50 and the negative output pin 50 are respectively fixed on two first fixing bases 121 of the two connecting fixing bases 12. The two opposite ends of the busbar 60 are also respectively fixed on two first fixing bases 121 of the two connecting fixing bases 12. The four signal transmission plug-ins 70 are respectively fixed on four second fixing bases 122 of the two connecting fixing bases 12.

[0077] Please see Figure 1 Furthermore, in some optional embodiments, clamping portions 123 are formed at both ends of the end plate body 11 along the Y direction and between two adjacent connecting fixing seats 12. Specifically, clamping portions 123 are formed between each end face of the end plate body 11 in the Y direction and the connecting fixing seat 12 near that end face, as well as between two connecting fixing seats 12. The clamping portions 123 are reserved for the grippers to hold the end plate 10 and the battery unit 40 together during the transfer process, so as to avoid the grippers damaging the connecting fixing seats 12. For example, the grippers hold the end plate 10 and the battery unit 40 together and squeeze the whole into the box.

[0078] Furthermore, in some alternative embodiments, the end plate body 11 and the connecting fixing seat 12 are integrally formed. Integrating the end plate body 11 and the connecting fixing seat 12 into one unit reduces the assembly process and lowers the risk of assembly errors of the connecting fixing seat 12, improving the reliability and efficiency of the installation of the connecting fixing seat 12. Moreover, it also optimizes the battery 100 to a certain extent, making the structure of the battery 100 simpler.

[0079] Please see Figures 1 to 6 ,as well as Figures 9 to 10 This application also provides a battery 100, which includes a battery housing 30, a battery unit 40, an output bus 50, a busbar 60, a signal transmission plug-in 70, and an end plate 10 as described in any of the above embodiments. The battery unit 40 is disposed inside the battery housing 30. The end plate body 11 of the end plate 10 is attached to one side of the battery unit 40 along the X direction. The first fixing seat 121 and the second fixing seat 122 are disposed on the side of the end plate body 11 away from the battery unit 40. The output bus 50 and the busbar 60 are both mounted on the first fixing seat 121 and are both electrically connected to the battery unit 40. The signal transmission plug-in 70 is mounted on the second fixing seat 122.

[0080] The enclosure includes a bottom plate 31, a top plate, and multiple side plates 32. The bottom plate 31 and the top plate are spaced apart along the Z direction. Each side plate 32 is connected between the bottom plate 31 and the side plate 32. The top plate, the bottom plate 31, and all the side plates 32 surround to form a receiving cavity 33. The battery unit 40, the output row 50, the busbar 60, and the signal transmission plug-in 70 are all installed in the receiving cavity 33.

[0081] The battery 100 in this application has the effects of any of the above embodiments, so it will not be described again here.

[0082] Please refer to it again. Figures 5 to 8 In some optional embodiments, the battery 100 includes a support end plate 20, which is disposed along the Z direction on the side of the connecting fixing seat 12 facing the inner bottom surface of the battery box 30 and is attached to the end plate 10, and a buffer cavity 21 is provided inside the support end plate 20.

[0083] by Figure 8 For example, the support end plate 20 is located below the connecting fixing seat 12 and is attached to the end plate body 11. A buffer cavity 21 is provided inside the support end plate 20, and the buffer cavity 21 is filled with buffer material, thereby reducing the impact on the battery unit 40 in the X direction during the transportation or operation of the battery 100 and improving the service life of the battery 100.

[0084] For example, cushioning materials can be materials such as sponge or fiber.

[0085] As an example, the support end plate 20 can be made of metal, plastic or other materials.

[0086] In some embodiments, the battery 100 further includes a mating end plate disposed along the X direction on the side of the battery cell 40 opposite to the end plate 10 and the supporting end plate 20. The mating end plate cooperates with the end plate 10 and the supporting end plate 20 and can clamp and protect the battery cell 40.

[0087] As an example, the structure of the mating end plate and the structure of the supporting end plate 20 may be the same or different, and no specific limitation is made here.

[0088] This application also provides an electrical device that includes a battery 100 as described in any embodiment, the battery 100 being used to provide electrical energy.

[0089] The electrical device in this application has the effects described in any of the above embodiments, so it will not be repeated here.

[0090] The electrical devices can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0091] It should be understood that the technical solutions described in the embodiments of this application are not limited to the electrical devices described above.

[0092] The aforementioned end plate 10, battery 100, and power supply device are designed with a connecting mounting base 12 comprising a first mounting base 121 and a second mounting base 122. Therefore, installing one connecting mounting base 12 is sufficient to install both the first mounting base 121 and the second mounting base 122. Compared to the prior art method of separately installing the first mounting base 121 and the second mounting base 122, this reduces installation steps and increases installation efficiency. The improvement in installation efficiency is particularly significant when fixing multiple output pins 50, multiple busbars 60, and multiple signal transmission plug-ins 70, requiring the installation of multiple first mounting bases 121 and multiple second mounting bases 122. Furthermore, integrating the first mounting base 121 and the second mounting base 122 into a single connecting mounting base 12 reduces installation frequency, lowers the risk of assembly errors, and makes installation more reliable.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An end plate disposed on one side of a battery cell (40) along the X direction, characterized in that, The end plate includes an end plate body (11). The end plate body (11) has at least one connecting fixing seat (12) protruding on the side away from the battery cell (40) along the X direction. The connecting fixing seat (12) includes a first fixing seat (121) and a second fixing seat (122). The first fixing seat (121) is used to assemble the output bus (50) and the bus (60). The second fixing seat (122) is used to assemble the signal transmission plug (70).

2. The end plate according to claim 1, characterized in that, The first fixing seat (121) includes a first fixing groove (1211) formed in the connecting fixing seat (12), a frame (1212) that is wrapped around to form the first fixing groove (1211), and a partition rib (1213) located in the first fixing groove (1211). The partition rib (1213) is connected to the frame (1212) along the X direction and divides the first fixing groove (1211) into a first sub-fixing groove (1211a) and a second sub-fixing groove (1211b). The frame (1212) has a first notch (1211c) and a second notch (1211d) respectively on the side away from the end plate body (11) along the X direction and corresponding to the positions of the first sub-fixed groove (1211a) and the second sub-fixed groove (1211b). The output bus (50) is inserted through the first notch (1211c) and installed in the first sub-fixed groove (1211a), and the busbar (60) is inserted through the second notch (1211d) and installed in the second sub-fixed groove (1211b).

3. The end plate according to claim 2, characterized in that, The first sub-fixing groove (1211a) is provided with a first fastening hole (1214), which is used to install and fasten the first fastener of the output bus (50). The second sub-fixing groove (1211b) is provided with a second fastening hole (1215), which is used to install and fasten the second fastener of the bus (60).

4. The end plate according to claim 2, characterized in that, The second fixing seat (122) includes a second fixing groove (1221) opened in the connecting fixing seat (12), and a limiting rib (1223) forming the second fixing groove (1221) is wrapped around it. The limiting rib (1223) has a third notch (1222) on the side away from the end plate body (11) along the X direction. The third notch (1222) is connected to the second fixing groove (1221). The signal transmission plug (70) is installed in the second fixing groove (1221), and the plug interface of the signal transmission plug (70) is exposed in the third notch (1222).

5. The end plate according to claim 4, characterized in that, The limiting rib (1223) has multiple connecting posts (1223a) protruding along the Z direction. The connecting posts (1223a) are used to position the signal acquisition circuit board that is electrically connected to the signal transmission plug-in (70). The Z direction intersects the X direction.

6. The end plate according to claim 4, characterized in that, The bottom wall of the second fixing groove (1221) is higher than the bottom wall of the first fixing groove (1211) in the Z direction, and the plane where the opening of the second fixing groove (1221) is located is higher than the plane where the opening of the first fixing groove (1211) is located in the Z direction; wherein, the Z direction intersects the X direction.

7. The end plate according to claim 1, characterized in that, Two connecting fixing seats (12) are spaced apart along the Y direction on the end plate body (11). Each connecting fixing seat (12) includes a first fixing seat (121) and a second fixing seat (122) disposed on both sides of the first fixing seat (121). The end plate body (11) has clamping portions (123) formed at both ends along the Y direction and between the two adjacent connecting fixing seats (12), and the end plate body (11) and the connecting fixing seats (12) are integrally formed; Wherein, the Y direction intersects the X direction.

8. A battery, characterized in that, The battery includes: Battery housing (30). A battery unit (40) is disposed inside the battery housing (30); As described in any one of claims 1 to 7 above, the end plate body (11) of the end plate is attached to one side of the battery cell (40) along the X direction, and the first fixing seat (121) and the second fixing seat (122) are disposed on the side of the end plate body (11) away from the battery cell (40). The output bus (50) and the busbar (60) are mounted on the first mounting base (121) and are both electrically connected to the battery cell (40); and The signal transmission plug (70) is mounted on the second mounting base (122).

9. The battery according to claim 8, characterized in that, The battery includes a support end plate (20), which is disposed along the Z direction on one side of the connecting fixing seat (12) facing the bottom surface of the battery box (30) and is attached to the end plate body (11). A buffer cavity (21) is provided inside the support end plate (20). The Z direction intersects the X direction.

10. An electrical device, characterized in that, Includes a battery as described in claim 8 or 9 above, said battery being used to provide electrical energy.

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