Battery top cover, battery and electric device
By setting up a mating end structure of the accommodating groove and plastic parts on the cover sheet of the battery top cover, it prevents foreign objects from entering and enhances the connection strength, and solves the problem of short circuits at the connections of plastic parts in the prior art, and realizes the normal operation of the battery and improve safety.
Patent Information
- Application Number
- CN202323281272.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-04
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-04
AI Technical Summary
Existing battery covers are prone to voids at the connections of plastic parts, causing metal foreign matter to enter and cause internal short circuits.
A battery cover is designed, by providing a housing groove on the cover sheet and first and second plastic parts are respectively arranged inside and outside it, forming an extension part and a mating end to prevent foreign matter from passing through the gap, strengthening the connection strength, and passing through different The shape of mating end and groove structure prevents short circuits.
It effectively avoids short circuit caused by foreign objects entering the gap, improves the connection strength and protection effect of the battery cover, and ensures the normal operation of the battery.
Smart Images
Figure CN222233739U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of battery production and manufacturing, and specifically relates to a battery top cover, a battery and an electrical device. Background Art
[0002] Nowadays, with the development of modern society and the enhancement of people's environmental awareness, more and more devices choose batteries as power sources, such as mobile phones, laptops, power tools and electric vehicles, which provides broad space for the application and development of batteries.
[0003] Among them, the battery top cover uses plastic parts to connect and isolate the pole and the cover. In the prior art, in order to save costs, most plastic parts are made of two plastic materials, which results in gaps when the two plastics are combined, and a part of the cover is easily exposed, resulting in welding slag, die-cut metal chips of the pole ear and other metal foreign objects entering to form an internal short circuit. Therefore, it is urgent to propose a new technical solution to solve the above problems. Utility Model Content
[0004] One of the purposes of the utility model is to address the deficiencies of the prior art and provide a battery top cover, which is used to block foreign matter from passing through the gap through the cooperation of the first cooperation end and the second cooperation end, thereby avoiding the phenomenon that foreign matter enters the gap and causes a short circuit of the cover.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A battery top cover comprises a pole body, a cover sheet and a plastic part; the cover sheet is provided with a receiving groove; the plastic part comprises a first plastic part respectively arranged in the receiving groove and a second plastic part below the cover sheet, the pole body passes through the cover sheet, the first plastic part and the second plastic part; the first plastic part extends toward the second plastic part to form an extension part, the extension part is located below the cover sheet, there is a gap between the extension part and the second plastic part, the extension part is provided with a first mating end near the gap, the second plastic part is provided with a second mating end near the gap, the first mating end and the second mating end cooperate to prevent foreign matter from passing through the gap.
[0007] As an improvement of the battery top cover described in the utility model, a plurality of first grooves are provided in the accommodating groove, a plurality of second grooves are provided in the second plastic part, and the first plastic part is respectively provided with first protrusions corresponding to the first grooves and second protrusions corresponding to the second grooves, so that the connection between the accommodating groove, the first plastic part and the second plastic part is more firmly connected, thereby increasing the connection strength of the battery top cover.
[0008] As an improvement to the battery top cover described in the utility model, the first mating end and the second mating end are both arranged as inclined surfaces, the inclined surface of the first mating end forms a first angle with the horizontal plane, the inclined surface of the second mating end forms a second angle with the horizontal plane, the first angle and the second angle are complementary, so that the cover plate cannot be seen from a frontal viewing angle below the battery top cover, thereby preventing the occurrence of a short circuit caused by overlapping or connecting the cover plate by metal foreign matter.
[0009] In other technical solutions, the first mating end includes a first vertical surface and the first inclined surface connected to each other, the second mating end is provided with the second vertical surface and the second inclined surface connected to each other, the first vertical surface and the second vertical surface are arranged opposite to each other and parallel to each other, the first inclined surface and the second inclined surface are arranged opposite to each other and parallel to each other. The above structure makes it impossible to see the cover sheet at any angle below the battery top cover, further preventing the occurrence of short circuit caused by foreign objects overlapping or connecting the cover sheet.
[0010] In other technical solutions, the first mating end and the second mating end are both step structures, the first mating end and the second mating end are mated, and the gaps are staggered between the first mating end and the second mating end. The staggered distribution of the gaps prevents foreign objects from contacting the cover plate, thereby avoiding the occurrence of short circuits.
[0011] As an improvement of the above technical solution, the cross-sections of the first mating end and the second mating end are centrally symmetrical, and the first mating end and the second mating end are single-layer step structures or multi-layer step structures.
[0012] In other technical solutions, the second plastic part has a covering body extending in a direction away from the cover sheet, and the covering body is located below the gap. The covering body can directly block the gap to prevent foreign matter from entering or overlapping to cause a short circuit.
[0013] The second purpose of the utility model is to provide a battery, including the battery top cover as described above.
[0014] The third object of the present utility model is to provide an electrical device comprising the battery as described above.
[0015] The beneficial effect of the utility model lies in that the battery top cover of the utility model comprises a pole body, a cover sheet and a plastic part; a receiving groove is arranged on the cover sheet; the plastic part comprises a first plastic part respectively arranged in the receiving groove and a second plastic part below the cover sheet, and the pole body passes through the cover sheet, the first plastic part and the second plastic part; the first plastic part extends toward the second plastic part to form an extension part, the extension part is located below the cover sheet, and there is a gap between the extension part and the second plastic part, the extension part is provided with a first mating end near the gap, the second plastic part is provided with a second mating end near the gap, and the first mating end and the second mating end cooperate to prevent foreign matter from passing through the gap. In order to save costs, the lower plastic in the plastic parts is usually made of cheaper plastic, resulting in a gap at the junction of the upper plastic and the lower plastic. During the welding process, metal foreign matter may enter the gap and connect or overlap with the cover plate, thereby causing a short circuit inside the battery. The utility model provides a first mating end and a second mating end that cooperate with each other, changes the cross-sectional shape of the gap, and avoids the phenomenon of foreign matter entering the gap and causing a short circuit in the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
[0017] Figure 1 It is a structural schematic diagram of implementation mode 1 of the present utility model.
[0018] Figure 2 This is a schematic diagram of an exploded view of the first embodiment of the present invention.
[0019] Figure 3 It is a cross-sectional view of the first embodiment of the present invention.
[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0021] Figure 5 It is a cross-sectional view of the second embodiment of the present invention.
[0022] Figure 6 for Figure 5 Enlarged view of point B in the middle.
[0023] Figure 7 It is a cross-sectional view of the third embodiment of the present invention.
[0024] Figure 8 for Figure 7 Enlarged view of point C in the middle.
[0025] Fig. 9 It is a cross-sectional view of the fourth embodiment of the present invention.
[0026] Fig.10 for Fig. 9 Enlarged view of point D in the middle.
[0027] The reference numerals are described as follows:
[0028] 1. Pole body; 2. Cover plate; 21. First groove; 3. Plastic part; 31. First plastic part; 311. Extension part; 312. First mating end; 313. First protrusion; 314. Second protrusion; 32. Second plastic part; 321. Second groove; 322. Second mating end; 33. Gap;
[0029] 101, first angle; 102, second angle;
[0030] 201, first vertical surface; 202, first inclined surface; 203, second vertical surface; 204, second inclined surface;
[0031] 300. Covering body. DETAILED DESCRIPTION
[0032] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criterion for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0033] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0034] In the utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.
[0035] The following is combined with Figures 1 to 10 The utility model is further described in detail with specific implementation modes, but is not intended to limit the utility model.
[0036] Implementation Method 1
[0037] The following is combined with Figures 1 to 4 Description of Implementation Method 1
[0038] like Figure 1 As shown, a battery top cover includes a pole body 1, a cover sheet 2 and a plastic part 3; a receiving groove is provided on the cover sheet 2; the plastic part 3 includes a first plastic part 31 respectively provided in the receiving groove and a second plastic part 32 under the cover sheet 2, and the pole body 1 passes through the cover sheet 2, the first plastic part 31 and the second plastic part 32.
[0039] In this embodiment, the cover plate 2 is a plain aluminum plate or a steel plate, and the first plastic part 31 and the second plastic part 32 are plastic injection molded with different materials, which reduces the production cost while not affecting the insulation and connection effects.
[0040] like Figure 2 As shown, a plurality of first grooves 21 are provided in the receiving groove, a plurality of second grooves 321 are provided in the second plastic part 32, and the first plastic part 31 is respectively provided with first protrusions 313 corresponding to the first grooves 21 and second protrusions 314 corresponding to the second grooves 321, so that the connection between the receiving groove, the first plastic part 31 and the second plastic part 32 is more firmly secured, thereby increasing the connection strength of the battery top cover.
[0041] In some embodiments, the first groove 21 and the first protrusion 313 are provided with corresponding spiral notches and spiral grooves to further increase the connection strength; or other concave-convex structures or snap-on structures are used to increase the connection strength.
[0042] like Figure 3 and Figure 4As shown, the first plastic part 31 extends toward the second plastic part 32 to form an extension portion 311, and the extension portion 311 is located below the cover plate 2. A gap 33 is provided between the extension portion 311 and the second plastic part 32. The extension portion 311 is provided with a first mating end 312 near the gap 33, and the second plastic part 32 is provided with a second mating end 322 near the gap 33. The first mating end 312 and the second mating end 322 are both provided with inclined surfaces, and the inclined surface of the first mating end 312 forms a first angle 101 with the horizontal plane, and the inclined surface of the second mating end 322 forms a second angle 102 with the horizontal plane, and the first angle 101 and the second angle 102 are complementary.
[0043] In this embodiment, the first mating end 312 and the second mating end 322 are configured as matching inclined structures so that the cover plate 2 cannot be seen from a frontal angle below the battery top cover, thereby preventing foreign objects from overlapping or connecting the cover plate 2 and causing a short circuit.
[0044] Implementation Method 2
[0045] like Figure 5 and Figure 6 As shown, different from the first embodiment, in this embodiment, the first mating end 312 includes a first vertical surface 201 and a first inclined surface 202 connected to each other, and the second mating end 322 is provided with a second vertical surface 203 and a second inclined surface 204 connected to each other, the first vertical surface 201 and the second vertical surface 203 are arranged opposite to each other and parallel to each other, and the first inclined surface 202 and the second inclined surface 204 are arranged opposite to each other and parallel to each other.
[0046] There is no restriction on the up-and-down relationship between the first vertical plane 201 and the first inclined plane 202, and on the up-and-down relationship between the second vertical plane 203 and the second inclined plane 204, as long as they are relatively arranged. In this embodiment, the cover sheet 2 cannot be seen at any angle below the battery top cover, further preventing the occurrence of short circuits caused by overlapping or direct contact of foreign objects with the cover sheet 2.
[0047] The other structures are the same as those in the first embodiment and will not be described again here.
[0048] Implementation Method 3
[0049] like Figure 7 and Figure 8 As shown, different from the first embodiment, the first mating end 312 and the second mating end 322 in this embodiment are both step structures, the first mating end 312 and the second mating end 322 are mated, the cross-sections of the first mating end 312 and the second mating end 322 are centrally symmetrical, and the gaps 33 are staggered between the first mating end 312 and the second mating end 322.
[0050] The first mating end 312 and the second mating end 322 are single-layer step structures or multi-layer step structures, which can prevent foreign objects from contacting the cover plate and avoid the occurrence of short circuits, but require high processing accuracy.
[0051] The other structures are the same as those in the first embodiment and will not be described in detail here.
[0052] Implementation Method 4
[0053] like Fig. 9 and Fig.10 As shown, different from the first embodiment, the second plastic part 32 of this embodiment has a covering body 300 extending away from the cover sheet 2, and the covering body 300 is located below the gap 33. The covering body 300 can cover the gap 33 and play a supporting role.
[0054] The other structures are the same as those in the first embodiment and will not be described in detail here.
[0055] Battery
[0056] A battery comprises the above-mentioned battery top cover, and the battery can be a lithium ion battery, a sodium ion battery, a magnesium ion battery, etc.
[0057] Electrical devices
[0058] An electrical device, including the above-mentioned battery, can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and 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 spacecraft, etc.; the electric toy includes a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator and an electric planer, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.
[0059] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.
Claims
1. A battery top cover, characterized in that: include: Pole body (1); A cover sheet (2), wherein the cover sheet (2) is provided with a receiving groove; The plastic part (3) comprises a first plastic part (31) arranged in the receiving groove and a second plastic part (32) below the cover plate (2), respectively, and the pole body (1) passes through the cover plate (2), the first plastic part (31) and the second plastic part (32); The first plastic part (31) extends toward the second plastic part (32) to form an extension portion (311); the extension portion (311) is located below the cover plate (2); a gap (33) is provided between the extension portion (311) and the second plastic part (32); the extension portion (311) is provided with a first mating end (312) near the gap (33); the second plastic part (32) is provided with a second mating end (322) near the gap (33); the first mating end (312) and the second mating end (322) are mated to prevent foreign matter from passing through the gap (33).
2. The battery top cover according to claim 1, characterized in that: The first mating end (312) and the second mating end (322) are both configured as inclined surfaces, the inclined surface of the first mating end (312) forms a first angle (101) with a horizontal plane, the inclined surface of the second mating end (322) forms a second angle (102) with the horizontal plane, and the first angle (101) and the second angle (102) are complementary.
3. The battery top cover according to claim 1, characterized in that: The first mating end (312) includes a first vertical surface (201) and a first inclined surface (202) connected to each other, and the second mating end (322) is provided with a second vertical surface (203) and a second inclined surface (204) connected to each other, the first vertical surface (201) is parallel to the second vertical surface (203), and the first inclined surface (202) is parallel to the second inclined surface (204).
4. The battery top cover according to claim 1, characterized in that: The first mating end (312) and the second mating end (322) are both step structures, the first mating end (312) and the second mating end (322) are mated, and the gaps (33) are staggeredly distributed between the first mating end (312) and the second mating end (322).
5. The battery top cover according to claim 4, characterized in that: The cross-sections of the first mating end (312) and the second mating end (322) are centrally symmetrical.
6. The battery top cover according to claim 4, characterized in that: The first mating end (312) and the second mating end (322) are single-layer step structures or multi-layer step structures.
7. The battery top cover according to any one of claims 1 to 6, characterized in that: The second plastic part (32) has a covering body (300) extending in a direction away from the cover sheet (2), and the covering body (300) is located below the gap (33).
8. The battery top cover according to claim 1, characterized in that: A plurality of first grooves (21) are arranged in the receiving groove, a plurality of second grooves (321) are arranged in the second plastic part (32), and the first plastic part (31) is respectively provided with first protrusions (313) corresponding to the first grooves (21) and second protrusions (314) corresponding to the second grooves (321).
9. A battery, characterized in that: The invention comprises a battery top cover as claimed in any one of claims 1 to 8.
10. An electrical device, characterized in that: Comprising the battery as claimed in claim 9.