Battery and electric device

Abstract

The utility model relates to a battery and an electric device. The battery comprises a box body, a battery monomer and a pressing piece, a positive pole and a negative pole are arranged on the top surface of the battery monomer, and a first fool-proof structure is arranged on the bottom surface. The plurality of single batteries are pressed in the accommodating cavity of the box body through the pressing piece, and the second fool-proof structure on the pressing piece is matched with the first fool-proof structure on the bottom surface of each single battery. And if the directions of the positive pole and the negative pole of the single battery are reversely mounted, the first fool-proof structure cannot be matched with the second fool-proof structure in place when the pressing piece is mounted, so that the pressing piece cannot be mounted in place. Therefore, the second fool-proof structure is matched with the first fool-proof structure, so that the uniqueness of the loading direction of the battery monomer can be ensured, and the positive pole and the negative pole of the battery monomer can be effectively prevented from being reversely loaded. Therefore, the battery and the electric device can obviously reduce the short circuit risk and eliminate the potential safety hazard.

Description

Technical Field

[0001] The utility model relates to the technical field, and particularly relates to a battery and an electrical device using the same. Background Art

[0002] During the battery assembly process, battery cells need to be successively loaded into a box body and connected to the electrical part. At present, more and more manufacturers adopt the method of inverted loading into the box, that is, the battery cells are loaded into the box body with the poles facing downwards, and the poles are in contact with the electrical part below to achieve electrical connection between the battery cells. However, since the method of inverted loading into the box cannot visually inspect the pole conditions of the battery cells, and the positive poles and negative poles are mostly symmetrically designed on both sides, it is very easy to install the positive and negative poles of the battery cells in reverse, resulting in safety hazards such as internal short circuit of the battery. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a battery and an electrical device using the same that can significantly reduce the short - circuit risk and eliminate safety hazards for the above - mentioned problems.

[0004] A battery, comprising:

[0005] A box body having an accommodation cavity;

[0006] A plurality of battery cells accommodated in the accommodation cavity, and the top surface of the battery cells faces the bottom of the box body. The top surface of the battery cells is provided with a positive pole and a negative pole spaced apart from each other, and the bottom surface of the battery cells is provided with a first anti - misassembly structure; and

[0007] A pressing member provided with a second anti - misassembly structure matching the first anti - misassembly structure. The pressing member is installed on the box body and the second anti - misassembly structure is matched with the first anti - misassembly structure to press the plurality of battery cells in the accommodation cavity.

[0008] In one embodiment, the first anti - misassembly structure is set as one of a concave structure and a protruding structure, and the second anti - misassembly structure is set as the other of the concave structure and the protruding structure.

[0009] In one embodiment, the first anti - misassembly structure is set as a groove or a sunken step that is recessed inward relative to the bottom surface of the battery cell, and the second anti - misassembly structure is set as a boss.

[0010] In one embodiment, the bottom surface of the battery cell is further provided with a first positive - pole mark and a first negative - pole mark, and the positions of the first positive - pole mark and the first negative - pole mark correspond to the positions of the positive pole and the negative pole respectively.

[0011] In one embodiment, a second positive electrode identifier and a second negative electrode identifier for respectively identifying the positive electrode post and the negative electrode post are further provided on the top surface of the battery cell.

[0012] In one embodiment, the battery cell includes a bottom plate, a top cover and a hollow sleeve. Both ends of the hollow sleeve are open. The bottom plate and the top cover are respectively located at both ends of the hollow sleeve and cover the openings at both ends of the hollow sleeve. The first anti-fooling structure, the first positive electrode identifier and the first negative electrode identifier are all formed on the bottom plate, and the positive electrode post and the negative electrode post are arranged on the top cover.

[0013] In one embodiment, a first protrusion extending laterally and asymmetrically is formed at the edge of the bottom plate. A first card slot is correspondingly provided at the opening edge of the hollow sleeve facing the bottom plate. The bottom plate is welded to the hollow sleeve and the first protrusion is clamped in the first card slot.

[0014] Alternatively, the bottom plate and the hollow sleeve are provided as an integrally formed structure.

[0015] In one embodiment, a second protrusion extending laterally and asymmetrically is formed at the edge of the top cover. A second card slot is correspondingly provided at the opening edge of the hollow sleeve facing the top cover. The top cover is welded to the hollow sleeve and the second protrusion is clamped in the second card slot.

[0016] In one embodiment, the battery cells are arranged in at least one row in the accommodating cavity, and each row includes at least two battery cells. The pressing member is strip-shaped, and at least two battery cells in the same row are pressed by the same pressing member.

[0017] An electric device includes a battery as described in any one of the above preferred embodiments.

[0018] In the above battery and electric device, a plurality of battery cells are pressed in the accommodating cavity of the box body by a pressing member, and the second anti-fooling structure on the pressing member cooperates with the first anti-fooling structure on the bottom surface of each battery cell. If the directions of the positive electrode post and the negative electrode post of the battery cell are installed reversely, the first anti-fooling structure cannot be properly matched with the second anti-fooling structure when installing the pressing member, resulting in the pressing member not being installed in place. It can be seen that by cooperating the second anti-fooling structure with the first anti-fooling structure, the installation direction of the battery cell can be ensured to be unique, thereby effectively preventing the positive electrode post and the negative electrode post of the battery cell from being installed reversely. Therefore, the above battery and electric device can significantly reduce the short-circuit risk and eliminate potential safety hazards. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of a battery in an embodiment of the present utility model;

[0021] Figure 2 For Figure 1 Structural schematic diagram of a battery cell in the battery shown;

[0022] Figure 3 For Figure 2 Structural schematic diagram of the battery cell shown from another angle;

[0023] Figure 4 For Figure 2 Explosion diagram of the battery cell shown;

[0024] Figure 5 For Figure 1 Structural schematic diagram of the pressing member in the battery shown;

[0025] Figure 6 Structural schematic diagram of a battery in another embodiment of the present utility model;

[0026] Figure 7 For Figure 6 Structural schematic diagram of a battery cell in the battery shown;

[0027] Figure 8 For Figure 6 Structural schematic diagram of the pressing member in the battery shown. Detailed implementation manners

[0028] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will give a detailed description of the specific implementation manners of the present utility model in conjunction with the drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0031] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0033] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate 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 intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0034] Please refer to Figure 1 and Figure 6 , the present utility model provides a battery 10. In addition, the present utility model also provides an electrical device.

[0035] The above-mentioned electrical device includes the above-mentioned battery 10 and can be powered by the above-mentioned battery 10. Among them, the above-mentioned electrical device can be a vehicle, a spacecraft, an electric toy, an electric tool, an energy storage device, a amusement device, etc. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle and a spaceship, etc.; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy or an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, for example, an electric drill, an electric grinding wheel, an electric wrench, an electric screwdriver, a hammer drill, an impact electric drill, a concrete vibrator and a planer, etc.; the energy storage device can be an energy storage wall, a base station energy storage, a container energy storage, etc.; the amusement device can be a carousel, a drop tower, etc. This application does not impose special restrictions on the above-mentioned electrical device.

[0036] For a new energy vehicle, the above-mentioned battery 10 can be used as a driving power source to replace fossil fuels to provide driving power.

[0037] Please refer to again Figure 1 , the battery 10 in an embodiment of the present utility model includes a box body 100, battery cells 200 and a pressing member 300.

[0038] The box body 100 has an accommodating cavity for accommodating a plurality of battery cells 200. The box body 100 generally includes a bottom case and an upper cover (not shown in the figure). The bottom case is a housing structure with an opening on one side. The upper cover is used to close the opening of the bottom case and enclose the above-mentioned accommodating cavity therebetween. The external contour of the box body 100 can be designed according to the installation space when the battery 10 is actually applied. For example, the box body 100 in this embodiment is in the shape of a square shell.

[0039] In addition, an electrical connection module 400 is generally provided at the bottom of the accommodation cavity in the box body 100. The electrical connection module 400 usually includes a tab conductive component. After the battery cell 200 is installed in the box body 100, the electrical connection module 400 can be electrically connected to the battery cell 200, so that multiple battery cells 200 can be connected in series, in parallel, or in a combined series-parallel connection through the electrical connection module 400.

[0040] The box body 100 can also integrate a liquid cooling module to control the temperature of multiple battery cells 200 accommodated in the accommodation cavity, so that the battery 10 can always be maintained within a suitable temperature range during operation. Specifically, the box wall of the box body 100 is provided as a hollow structure, and a cooling flow channel for the coolant to flow through is formed inside it. An inlet and outlet joint communicating with the above cooling flow channel is provided on the outer wall of the box body 100. The coolant can circulate in the cooling flow channel through the inlet and outlet joint, so as to continuously exchange heat with multiple battery cells 200 in the accommodation cavity, and finally achieve the purpose of controlling the temperature of the battery cells 200.

[0041] Please refer to Figure 2 , Figure 3 and Figure 4 , the battery cell 200 has a top surface and a bottom surface arranged oppositely, and the top surface of the battery cell 200 is provided with a positive electrode post 221 and a negative electrode post 222 spaced apart from each other. That is, the positive electrode post 221 and the negative electrode post 222 are located at the same end of the battery cell 200. The positive electrode post 221 and the negative electrode post 222 are respectively electrically connected to the positive electrode and the negative electrode of the battery core (not shown) in the battery cell 200, so as to serve as the positive electrode and the negative electrode of the battery cell 200 respectively. The above battery cell 200 can be a lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, and its external contour can be a flat body, a cuboid or other shapes, but it is not limited thereto, as long as the positive electrode post 221 and the negative electrode post 222 are distributed at the same end. Specifically, in this embodiment, the above battery cell 200 is a lithium-ion square shell battery.

[0042] Specifically, in this embodiment, the battery cell 200 includes a bottom plate 210, a top cover 220 and a hollow sleeve 230. The hollow sleeve 230 has openings at both ends, and the bottom plate 210 and the top cover 220 are respectively located at both ends of the hollow sleeve 230 and cover the openings at both ends of the hollow sleeve 230. The bottom plate 210, the top cover 220 and the hollow sleeve 230 together enclose an accommodation cavity for accommodating the battery core, and the bottom surface and the top surface of the battery cell 200 respectively refer to the outer surfaces of the bottom plate 210 and the top cover 220.

[0043] For a square shell battery, the hollow sleeve 230 is in the shape of a square tube, while the bottom plate 210 and the top cover 220 are rectangular. Both the bottom plate 210 and the top cover 220 can be assembled with the hollow sleeve 230 by welding, and one of them can also be integrally formed with the hollow sleeve 230. When the bottom plate 210 is integrally formed with the hollow sleeve 230, the top cover 220 is assembled and welded to the hollow sleeve 230 by welding; when the top cover 220 and the bottom plate 210 are integrally formed with the hollow sleeve 230, the bottom plate 210 is assembled and welded to the hollow sleeve 230 by welding. In this way, the battery cell can be smoothly inserted into the above-mentioned receiving cavity.

[0044] The top surface of the battery cell 200 faces the bottom of the box body 100. That is to say, the battery cell 200 is inserted into the box body 100 in an inverted manner, so the top cover 220 and the positive electrode post 221 and the negative electrode post 222 provided on the top cover 220 also face the bottom of the box body 100. After the battery cell 200 is inserted into the box body 100, the positive electrode post 221 and the negative electrode post 222 can contact the tabs on the electrical connection module 400 located on the bottom wall of the box body 100, so as to realize the series connection, parallel connection or hybrid connection between the battery cells 200. Therefore, each battery cell 200 must be correctly inserted in accordance with the preset direction, otherwise, it will cause the positive electrode post 221 and the negative electrode post 222 to be installed in reverse, thus triggering risks such as short circuit.

[0045] Please refer to again Figure 1 , specifically in this embodiment, the battery cells 200 are arranged in at least one row in the accommodating cavity, and each row includes at least two battery cells 200. Moreover, the orientations of two adjacent battery cells 200 in the same row are opposite, that is, the positive electrode post 221 of one battery cell 200 and the negative electrode post 222 of the adjacent battery cell 200 are located at the same end, while the negative electrode post 222 and the positive electrode post 221 of the adjacent battery cell 200 are located at the other end. The mutually close positive electrode post 221 and negative electrode post 222 contact the same tab, so that at least two battery cells 200 in the same row can be connected in series in sequence through the electrical connection module 400.

[0046] It should be noted that in other embodiments, for different requirements for the electrical connection methods between multiple battery cells 200. Correspondingly, the distribution method of the multiple battery cells 200 in the accommodating cavity and the insertion direction of each battery cell 200 can also be adjusted accordingly.

[0047] Please refer to together Figure 2 and Figure 5, a first anti-fooling structure 211 is provided on the bottom surface of the battery cell 200. Specifically, the first anti-fooling structure 211 is provided on the bottom plate 210; the pressing member 300 is provided with a second anti-fooling structure 310 that matches the first anti-fooling structure 211. The pressing member 300 is installed on the box body 100 and the second anti-fooling structure 310 is matched with the first anti-fooling structure 211 to press a plurality of battery cells 200 in the accommodating cavity.

[0048] The first anti-fooling structure 211 cooperates with the second anti-fooling structure 310 to prevent the battery cell 200 from being installed in the wrong direction. Only when the battery cell 200 is correctly installed in the preset direction can the second anti-fooling structure 310 cooperate with the first anti-fooling structure 211 of each battery cell 200 in place. Otherwise, when installing the pressing member 300, the first anti-fooling structure 211 will not be able to cooperate with the second anti-fooling structure 310 in place, resulting in the pressing member 300 not being installed in place. In this way, it can be ensured that the installation direction of the battery cell 200 is unique.

[0049] Take Figure 1 as an example. Only when the orientations of two adjacent battery cells 200 in the same column are opposite can the second anti-fooling structure 310 cooperate with the first anti-fooling structure 211 in place. When the directions of some battery cells 200 are installed in the wrong direction, the pressing member 300 may not be able to be assembled in place and bulge due to the interference of the first anti-fooling structure 211, thus prompting the staff that there are battery cells 200 with the wrong installation direction. It can be seen that by cooperating the second anti-fooling structure 310 with the first anti-fooling structure 211, it can effectively prevent the positive electrode post 221 and the negative electrode post 222 of the battery cell 200 from being installed in the wrong direction, thereby significantly reducing the short-circuit risk and eliminating potential safety hazards.

[0050] Specifically, in this embodiment, the pressing member 300 is strip-shaped, and at least two battery cells 200 in the same column are pressed by the same pressing member 300. Both ends of the pressing member 300 can be installed on the box body 100 through threaded fasteners, and a plurality of second anti-fooling structures 310 can be provided along the length direction of one pressing member 300, so as to be able to cooperate with the first anti-fooling structures 211 of a plurality of battery cells 200 respectively.

[0051] It should be noted that in other embodiments, the pressing member 300 can also be in other shapes, such as plate-shaped, and as long as the second anti-fooling structure 310 is provided at the position corresponding to the first anti-fooling structure 211 of the plurality of battery cells 200.

[0052] The first anti-fooling structure 211 can be one of a concave structure and a protruding structure, and the second anti-fooling structure 310 is set as the other of the concave structure and the protruding structure. Both the concave structure and the protruding structure adopt an asymmetric structure design to play an anti-fooling role. Moreover, when the concave structure and the protruding structure cooperate, they are nested with each other, so they can also play a positioning and limiting role for the pressing member 300, improving the assembly stability of the pressing member 130.

[0053] For example, in this embodiment, the first anti-fooling structure 211 is set as a boss protruding from the bottom surface of the battery cell 200, and the second anti-fooling structure 310 is set as a groove. When the first anti-fooling structure 211 and the second anti-fooling structure 310 cooperate, the boss is embedded in the groove. Of course, the first anti-fooling structure 211 can also be set as a groove recessed inward relative to the bottom surface of the battery cell 200, while the second anti-fooling structure 310 is set as a boss.

[0054] In addition, please refer to Figure 7 and Figure 8 , in another embodiment, the first anti-fooling structure 211 is set as a sunken step at one end of the bottom surface of the battery cell 200, and the second anti-fooling structure 310 is set as a boss. At this time, the bottom plate 210 can be integrally formed with the hollow sleeve 230, and the above-mentioned sunken step is formed during the forming process to serve as the first anti-fooling structure 211. When the first anti-fooling structure 211 and the second anti-fooling structure 310 cooperate, the boss serving as the second anti-fooling structure extends into the sunken step.

[0055] In addition, please refer to Figure 2 and Figure 4 , in this embodiment, a first positive electrode mark 212 and a first negative electrode mark 213 are further provided on the bottom surface of the battery cell 200, and the positions of the first positive electrode mark 212 and the first negative electrode mark 213 correspond to the positions of the positive electrode post 221 and the negative electrode post 222 respectively.

[0056] The first positive electrode mark 212 and the first negative electrode mark 213 are respectively used to indicate the positive electrode post 221 and the negative electrode post 222, and can be a notch structure of a preset shape. For example, a cross groove can represent the positive electrode post 221, and a single groove represents the negative electrode post 222. Suppose the positive electrode post 221 and the negative electrode post 222 are respectively located on the left and right sides of the top surface of the battery cell 200, then the first positive electrode mark 212 and the first negative electrode mark 213 are respectively located on the left and right sides of the bottom surface of the battery cell 200, and vice versa. That is to say, the positions of the first positive electrode mark 212 and the first negative electrode mark 213 on the bottom surface correspond to the positions of the positive electrode post 221 and the negative electrode post 222 on the top surface.

[0057] When the battery cell 200 is loaded into the box body 100 by the method of inverted loading into the box, the bottom surface of the battery cell 200 faces outward, so the operator can observe the first positive electrode mark 212 and the first negative electrode mark 213. Moreover, the actual directions of the positive electrode post 221 and the negative electrode post 222 can be inferred from the directions of the first positive electrode mark 212 and the first negative electrode mark 213, thereby avoiding the wrong installation of the positive electrode post 221 and the negative electrode post 222.

[0058] Furthermore, please refer to Figure 3 again. In this embodiment, a second positive electrode mark 223 and a second negative electrode mark 224 for respectively marking the positive electrode post 221 and the negative electrode post 222 are further provided on the top surface of the battery cell 200. The second positive electrode mark 223 and the second negative electrode mark 224 can respectively adopt the same form as the first positive electrode mark 212 and the first negative electrode mark 213, and are used to mark the positions of the positive electrode post 221 and the negative electrode post 222 on the top surface of the battery cell 200, which can further avoid the wrong installation of the positive electrode post 221 and the negative electrode post 222.

[0059] Moreover, the second positive electrode mark 223 and the second negative electrode mark 224 can also cooperate with the first positive electrode mark 212 and the first negative electrode mark 213 and play a role of mutual verification. Only when the positions of the positive electrode post 221 indicated by the second positive electrode mark 223 and the first positive electrode mark 212 are consistent, and the positions of the negative electrode post 222 indicated by the second negative electrode mark 224 and the first negative electrode mark 213 are consistent, does it mean that the first positive electrode mark 212, the first negative electrode mark 213, the second positive electrode mark 223, and the second negative electrode mark 224 are marked correctly.

[0060] Specifically, both the first positive electrode mark 212 and the first negative electrode mark 213 are formed on the bottom plate 210, while both the second positive electrode mark 223 and the second negative electrode mark 224 are formed on the top cover 220. When the bottom plate 210 or the top cover 220 is assembled with the hollow sleeve 230 by welding, there is a possibility of wrong installation. In this way, the marking of the first positive electrode mark 212, the first negative electrode mark 213, or the second positive electrode mark 223, the second negative electrode mark 224 will be inaccurate.

[0061] To avoid this situation, please refer to Figure 4 again. In this embodiment, a first protrusion 214 extending laterally and asymmetrically is formed on the edge of the bottom plate 210, and a first card slot 231 is correspondingly provided on the opening edge of the hollow sleeve 230 facing the bottom plate 210. The bottom plate 210 is welded to the hollow sleeve 230 and the first protrusion 214 is clamped in the first card slot 231. The cooperation between the first protrusion 214 and the first card slot 231 can play an anti-fooling role for the bottom plate 210, so as to ensure that the bottom plate 210 can be assembled with the hollow sleeve 230 in a unique correct direction.

[0062] Further, the top cover 220 can also be assembled with the hollow sleeve 230 in a similar manner. Specifically, in this embodiment, a second protrusion (not shown in the figure) extending laterally and asymmetrically is formed at the edge of the top cover 220, and a second card slot (not shown in the figure) is correspondingly provided at the opening edge of the hollow sleeve 230 facing the top cover 220. The second protrusion is clamped in the second card slot. Similarly, the cooperation between the second protrusion and the second card slot can play an anti-fooling role for the top cover 220, thereby ensuring that the top cover 220 can be assembled with the hollow sleeve 230 in a unique correct direction.

[0063] For the above battery 10 and the electrical device, a plurality of battery cells 200 are pressed in the accommodation cavity of the box body 100 by the pressing member 300, and the second anti-fooling structure 310 on the pressing member 300 cooperates with the first anti-fooling structure 211 on the bottom surface of each battery cell 200. If the directions of the positive electrode post 221 and the negative electrode post 222 of the battery cell 200 are installed in reverse, the first anti-fooling structure 211 will not be able to cooperate with the second anti-fooling structure 310 in place when the pressing member 300 is installed, resulting in the pressing member 300 not being able to be installed in place. It can be seen that through the cooperation between the second anti-fooling structure 310 and the first anti-fooling structure 211, the installation direction of the battery cell 200 can be ensured to be unique, thereby effectively preventing the positive electrode post 221 and the negative electrode post 222 of the battery cell 200 from being installed in reverse. Therefore, the above battery 10 and the electrical device can significantly reduce the short-circuit risk and eliminate potential safety hazards.

[0064] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope described in this specification.

[0065] The above-described embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A battery (10), characterized in that, Comprising: A box body (100) having a receiving cavity; A plurality of battery cells (200) housed in the receiving cavity, and the top surface of the battery cell (200) faces the bottom of the box body (100). The top surface of the battery cell (200) is provided with a positive electrode post (221) and a negative electrode post (222) spaced apart from each other, and the bottom surface of the battery cell (200) is provided with a first anti-fooling structure (211); and A pressing member (300) provided with a second anti-fooling structure (310) matching the first anti-fooling structure (211). The pressing member (300) is installed on the box body (100) and the second anti-fooling structure (310) is matched with the first anti-fooling structure (211) to press a plurality of the battery cells (200) in the receiving cavity.

2. The battery (10) according to claim 1, characterized in that, The first anti-fooling structure (211) is set as one of a concave structure and a protruding structure, and the second anti-fooling structure (310) is set as the other of the concave structure and the protruding structure.

3. The battery (10) according to claim 2, characterized in that, The first anti-fooling structure (211) is set as a groove or a sunken step recessed inward relative to the bottom surface of the battery cell (200), and the second anti-fooling structure (310) is set as a boss.

4. The battery (10) according to claim 1, characterized in that, The bottom surface of the battery cell (200) is further provided with a first positive electrode mark (212) and a first negative electrode mark (213), and the positions of the first positive electrode mark (212) and the first negative electrode mark (213) correspond to the positions of the positive electrode post (221) and the negative electrode post (222) respectively.

5. The battery (10) according to claim 4, characterized in that, The top surface of the battery cell (200) is further provided with a second positive electrode mark (223) and a second negative electrode mark (224) respectively for marking the positive electrode post (221) and the negative electrode post (222).

6. The battery (10) according to claim 5, characterized in that, The battery cell (200) includes a bottom plate (210), a top cover (220) and a hollow sleeve (230). The two ends of the hollow sleeve (230) are open. The bottom plate (210) and the top cover (220) are respectively located at the two ends of the hollow sleeve (230) and cover the openings at the two ends of the hollow sleeve (230). The first anti-fooling structure (211), the first positive electrode mark (212) and the first negative electrode mark (213) are all formed on the bottom plate (210), and the positive electrode post (221) and the negative electrode post (222) are provided on the top cover (220).

7. The battery (10) according to claim 6, characterized in that, The edge of the bottom plate (210) forms a first protrusion (214) extending laterally and asymmetrically. The opening edge of the hollow sleeve (230) facing the bottom plate (210) is correspondingly provided with a first card slot (231). The bottom plate (210) is welded to the hollow sleeve (230) and the first protrusion (214) is clamped in the first card slot (231); Alternatively, the bottom plate (210) and the hollow sleeve (230) are set as an integrally formed structure.

8. The battery (10) according to claim 6, characterized in that, The edge of the top cover (220) is formed with a second protrusion extending laterally and asymmetrically arranged, and the opening edge of the hollow sleeve (230) facing the top cover (220) is correspondingly provided with a second card slot, and the top cover (220) is welded to the hollow sleeve (230) so that the second protrusion is clamped in the second card slot.

9. The battery (10) according to claim 1, characterized in that, The battery cells (200) are arranged in at least one row in the accommodation cavity, and each row includes at least two of the battery cells (200). The pressing member (300) is strip-shaped, and at least two of the battery cells (200) in the same row are pressed by the same pressing member (300).

10. An electrical device, characterized in that, It includes a battery (10) according to any one of claims 1 to 9 above.

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