Battery top cover anti-rotation device and battery

Abstract

The utility model provides an anti-rotation device for a battery top cover. The anti-rotation device comprises an anode upper plastic, an anode lower plastic, an anode column, a cathode upper plastic, a cathode lower plastic, a cathode column, an anti-explosion valve, a sealing ring and a top cover sheet, the positive pole penetrates through the through hole of the positive pole lower plastic and is assembled with the top cover plate; the positive pole column, the positive pole lower plastic and the top cover sheet are subjected to integral injection molding by the positive pole upper plastic; the cathode column penetrates through the through hole of the cathode lower plastic cement and is assembled with the top cover plate; the negative pole column, the negative pole lower plastic and the top cover sheet are subjected to integral injection molding by the negative pole upper plastic; a pole hole, a liquid injection hole, an anti-rotation ring and an anti-rotation groove are arranged on the top cover plate; the anti-rotating ring is arranged in a groove in the periphery of the pole hole, a first distance is arranged between the inner ring of the anti-rotating ring and the periphery of the pole hole, and the first distance is larger than or equal to the width of the sealing ring. The anti-rotation device can effectively avoid displacement or dislocation between the battery cells.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of battery technology, and in particular to a battery top cover anti-rotation device and a battery. Background Art

[0002] The existing passenger car module is composed of multiple battery cells connected in series. The conductive medium between the battery cells is a square hard aluminum block connected to the positive and negative poles of the battery cells. When the passenger car is driving, the vibration of the body causes a small range of displacement or misalignment between the battery cells, resulting in a rotational force on the battery poles.

[0003] Therefore, how to effectively avoid displacement or misalignment between battery cells is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The embodiment of the present application provides a battery top cover anti-rotation device, through which the displacement or misalignment between battery cells can be effectively avoided.

[0005] In a first aspect, an embodiment of the present application provides a battery top cover anti-rotation device, comprising: a positive electrode upper plastic, a positive electrode lower plastic, a positive electrode column, a negative electrode upper plastic, a negative electrode lower plastic, a negative electrode column, an explosion-proof valve, a sealing ring and a top cover sheet;

[0006] The positive electrode column passes through the through hole of the plastic under the positive electrode and is assembled with the top cover sheet;

[0007] The positive electrode upper plastic is used to integrally inject the positive electrode column, the positive electrode lower plastic and the top cover sheet;

[0008] The negative electrode column passes through the through hole of the plastic under the negative electrode and is assembled with the top cover sheet;

[0009] The negative electrode upper plastic is used to integrally inject the negative electrode column, the negative electrode lower plastic and the top cover sheet;

[0010] The top cover sheet is provided with a pole hole, a liquid injection hole, an anti-rotation ring and an anti-rotation groove;

[0011] The anti-rotation ring is arranged in a groove around the pole hole, and a first spacing is arranged between the inner ring of the anti-rotation ring and the periphery of the pole hole, and the first spacing is greater than or equal to the width of the sealing ring.

[0012] In a possible implementation, the thickness of the anti-rotation ring is greater than or equal to one third of the thickness of the top cover sheet, and the thickness of the anti-rotation ring is less than or equal to four fifths of the thickness of the top cover sheet.

[0013] In a possible implementation, the outer ring of the anti-rotation ring has a gear shape, and the gear spacing is greater than the distance between the inner ring of the gear and the inner ring of the anti-rotation ring.

[0014] In a possible implementation, the circumference of the outer ring of the gear is greater than or equal to twice the circumference of a circle with the tooth tip circle as the diameter.

[0015] In a possible implementation, the included angle of the gear is greater than or equal to 30 degrees.

[0016] In a possible implementation, the top cover sheet further includes: a pole sink, and the pole sink is distributed on the back side of the top cover sheet.

[0017] In a second aspect, an embodiment of the present application provides a battery, comprising the battery top cover anti-rotation device described in any possible implementation of the first aspect above.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. A first spacing is set between the anti-rotation ring and the pole hole, avoiding the position of the sealing ring and not occupying the sealing width of the sealing ring, thereby achieving a more efficient sealing effect.

[0020] 2. By setting the circumference of the outer ring of the gear to be greater than or equal to twice the circumference of the circle with the top circle as the diameter, the friction area between the parts can be greatly increased and the occurrence of relative rotation can be reduced.

[0021] 3. The outer ring of the anti-rotation ring is set to a gear shape. Because the gear-shaped outer ring is staggered and engaged, the friction between the parts is greater and it is less likely to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 A schematic diagram of a top cover structure provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of a top cover sheet provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the relative position between an anti-rotation ring and a pole hole provided in an embodiment of the present application;

[0027] Figure 4 A schematic cross-sectional view of the anti-rotation ring and the pole hole provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments are only examples of devices consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0029] The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. The following will describe the embodiments of the present application in conjunction with the accompanying drawings.

[0030] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] like Figure 1 As shown, the embodiment of the present application provides a battery top cover anti-rotation device, including: positive electrode upper plastic 101, positive electrode lower plastic 104, positive electrode column 108, negative electrode upper plastic 102, negative electrode lower plastic 106, negative electrode column 110, explosion-proof valve 105, sealing ring (107 or 109) and top cover sheet 103; wherein,

[0032] The positive electrode column 108 passes through the through hole of the positive electrode lower plastic 104 and is assembled with the top cover sheet 103;

[0033] The positive electrode upper plastic 101 is integrally injection molded with the positive electrode column 108, the positive electrode lower plastic 104 and the top cover sheet 103;

[0034] The negative electrode column 110 passes through the through hole of the negative electrode lower plastic 106 and is assembled with the top cover sheet 103;

[0035] The negative electrode upper plastic 102 is integrally injection molded with the negative electrode column 110, the negative electrode lower plastic 106 and the top cover sheet 103;

[0036] Among them, Figure 2As shown, the top cover sheet 103 is provided with a pole hole 203 , a liquid injection hole 202 , an anti-rotation ring 205 and an anti-rotation groove 204 .

[0037] The anti-rotation ring 205 is arranged in a groove outside the pole hole 203, and a first spacing is arranged between the inner ring of the anti-rotation ring 205 and the periphery of the pole hole 203, wherein the first spacing is greater than or equal to the width of the sealing ring (107 or 109).

[0038] It can be understood that the sealing ring includes a positive electrode sealing ring 107 and a negative electrode sealing ring 109. The positive electrode sealing ring 107 is arranged between the top cover sheet 103 and the positive electrode column 108, and the negative electrode sealing ring 109 is arranged between the top cover sheet 103 and the negative electrode column 110. The top cover sheet 103 seals the positive electrode upper plastic 101 and the positive electrode column 108 through the positive electrode sealing ring 107, and seals the negative electrode upper plastic 102 and the negative electrode column 110 through the negative electrode sealing ring 109.

[0039] In a possible implementation, the injection hole 202 is used to inject electrolyte.

[0040] In a possible implementation, the thickness of the anti-rotation ring 205 is greater than or equal to one third of the thickness of the top cover sheet 103 , and the thickness of the anti-rotation ring 205 is less than or equal to four fifths of the thickness of the top cover sheet 103 .

[0041] like Figure 3 FIG. 1 is a schematic diagram of the relative position between an anti-rotation ring and a pole hole provided in an embodiment of the present application. Figure 3 It includes: a pole hole 203, an anti-rotation ring 205, an anti-rotation gear 301, a gear inner ring 302, an anti-rotation ring inner ring 303, a gear spacing 304, and a spacing between the gear inner ring 302 and the anti-rotation ring inner ring 303.

[0042] In a possible implementation, the outer ring shape of the anti-rotation ring 205 includes a gear shape, and the gear spacing is greater than the distance between the gear inner ring 302 and the anti-rotation ring inner ring 303 .

[0043] In a possible implementation, the circumference of the outer ring of the gear is greater than or equal to twice the circumference of a circle with the tooth tip circle as the diameter.

[0044] In a possible implementation, the angle of the gear is greater than or equal to 30 degrees, so that the upper plastic can flow in smoothly.

[0045] In a possible implementation, the top cover sheet 103 further includes: a pole sink 201 , and the pole sink 201 is distributed on the back side of the top cover sheet 103 .

[0046] Figure 4This is a schematic cross-sectional view of the anti-rotation ring 205 and the pole hole 203 provided in the embodiment of the present application. Figure 4 , including: top cover sheet thickness 401, anti-rotation ring depth 402, distance 403 between the inner ring 303 of the anti-rotation ring and the pole hole 203, sealing ring width 404, positive electrode upper plastic 101, anti-rotation ring 205, top cover sheet 103, positive electrode lower plastic 104, positive electrode sealing ring 107, and positive pole 108.

[0047] Understandably, Figure 4 The positive pole is used as an example for demonstration, and the negative pole can also be used, such as Figure 4 It includes: top cover sheet thickness 401, anti-rotation ring depth 402, distance 403 between the inner ring 303 of the anti-rotation ring and the pole hole 203, sealing ring width 404, negative electrode upper plastic 102, anti-rotation ring 205, top cover sheet 103, negative electrode lower plastic 106, negative electrode sealing ring 109, and negative pole 110.

[0048] It can be understood that in the embodiment of the present application, unless otherwise specified, the upper plastic includes the positive electrode upper plastic 101 and the negative electrode upper plastic 102 .

[0049] An embodiment of the present application provides a battery, comprising the battery top cover anti-rotation device in any possible implementation manner described above.

[0050] Compared with the prior art, the utility model has the following beneficial effects:

[0051] 1. A first spacing is set between the anti-rotation ring 205 and the pole hole 203, avoiding the positions of the positive electrode sealing ring 107 and the negative electrode sealing ring 109, not occupying the sealing width of the sealing ring, and being able to perform a sealing function more efficiently.

[0052] 2. By setting the circumference of the outer ring of the gear to be greater than or equal to twice the circumference of the circle with the top circle as the diameter, the friction area between the parts can be greatly increased and the occurrence of relative rotation can be reduced.

[0053] 3. The outer ring of the anti-rotation ring 205 is set to a gear shape. Because the gear-shaped outer ring is staggered and engaged, the friction between the parts is greater and it is less likely to move.

[0054] In the embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules is only a logical function division, and there may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0055] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the disclosure disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope of the present application is indicated by the claims.

[0056] It should be understood that the present application is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof.

Claims

1. A battery top cover anti-rotation device, characterized in that: include: Positive electrode upper plastic, positive electrode lower plastic, positive electrode column, negative electrode upper plastic, negative electrode lower plastic, negative electrode column, explosion-proof valve, sealing ring and top cover sheet; The positive electrode column passes through the through hole of the plastic under the positive electrode and is assembled with the top cover sheet; The positive electrode upper plastic is used to integrally inject the positive electrode column, the positive electrode lower plastic and the top cover sheet; The negative electrode column passes through the through hole of the plastic under the negative electrode and is assembled with the top cover sheet; The negative electrode upper plastic is used to integrally inject the negative electrode column, the negative electrode lower plastic and the top cover sheet; The top cover sheet is provided with a pole hole, a liquid injection hole, an anti-rotation ring and an anti-rotation groove; The anti-rotation ring is arranged in a groove around the pole hole, and a first spacing is arranged between the inner ring of the anti-rotation ring and the periphery of the pole hole, and the first spacing is greater than or equal to the width of the sealing ring.

2. The device according to claim 1, characterized in that The thickness of the anti-rotation ring is greater than or equal to one third of the thickness of the top cover sheet, and the thickness of the anti-rotation ring is less than or equal to four fifths of the thickness of the top cover sheet.

3. The device according to claim 1 or 2, characterized in that: The outer ring shape of the anti-rotation ring includes a gear shape, and the gear spacing is greater than the distance between the gear inner ring and the inner ring of the anti-rotation ring.

4. The device according to claim 3, characterized in that The circumference of the outer ring of the gear is greater than or equal to twice the circumference of a circle with the tooth top circle as the diameter.

5. The device according to claim 3, characterized in that The included angle of the gear is greater than or equal to 30 degrees.

6. The device according to any one of claims 1, 2, 4 and 5, characterized in that: The top cover sheet further comprises: a pole sinking platform, and the pole sinking platform is distributed on the back side of the top cover sheet.

7. A battery, characterized in that: A battery top cover anti-rotation device comprising the battery top cover anti-rotation device according to any one of claims 1 to 6.

Images