Gasket for battery, battery and electric equipment

Abstract

The utility model discloses a gasket for a battery, the battery and electric equipment. The gasket is provided with a plurality of flow guide areas which are arranged at intervals in the circumferential direction, and each flow guide area is internally provided with a plurality of flow guide holes which are arranged at intervals. Wherein the number of the flow guide areas is n1, the number of the flow guide holes in each flow guide area is n2, and n1 is equal to n2. According to the utility model, the plurality of diversion areas are arranged on the gasket, the plurality of diversion holes are formed in each diversion area, and the number of the diversion areas is the same as that of the diversion holes in each diversion area, so that electrolyte can be guided to be more uniformly distributed in the battery, and the electrical isolation performance of the gasket is considered.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially is related to a gasket for battery, battery and electric equipment. BACKGROUND

[0002] Large cylindrical battery is a kind of high-capacity lithium ion battery, its design usually considers heat management problem, by optimizing internal structure and material, it still can keep stable performance under high temperature environment.In the design of large cylindrical battery, reasonable insulating gasket structure is the key to ensure the safety and performance of battery. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art is solved.The utility model discloses one purpose in at least one of the technical problems in the prior art is solved.The utility model discloses a gasket for battery is provided.A plurality of flow guide zones are arranged on the gasket of the utility model, a plurality of flow guide holes are arranged in each flow guide zone, and the number of flow guide zones is the same as the number of flow guide holes in each flow guide zone, which can guide the electrolyte to be more evenly distributed in the battery and take into account the electrical isolation performance of the gasket.

[0004] The utility model discloses a battery comprising the gasket.

[0005] The utility model discloses an electric equipment comprising the battery.

[0006] A plurality of flow guide zones are arranged on the gasket of the utility model in the circumferential direction, a plurality of flow guide holes are arranged in each flow guide zone, and the number of flow guide zones is the same as the number of flow guide holes in each flow guide zone, which can guide the electrolyte to be more evenly distributed in the battery and take into account the electrical isolation performance of the gasket.

[0007] The gasket of the utility model is provided with flow guide zones and flow guide holes in the flow guide zones, and the electrolyte in the battery can flow in the battery through the flow guide holes in the flow guide zones when the gasket is assembled to the battery.Through the design of a plurality of flow guide zones and flow guide holes, the electrolyte can be more evenly distributed in the battery, which helps to avoid excessive accumulation of electrolyte in some areas, reduces the risk of local overheating or short circuit caused by uneven electrolyte, and improves the safety, cycle life and performance of the battery.

[0008] In processing, the number n1 of the flow guide areas on the gasket and the number n2 of the flow guide holes in each flow guide area can satisfy n1=n2, that is, the total number of the flow guide areas on the gasket and the number of the flow guide holes in each flow guide area are the same. Since the flow guide holes are holes penetrating through the gasket, too few flow guide holes will affect the flow of the electrolyte, and too many flow guide holes will lead to a decrease in the structural strength and electrical isolation performance of the gasket, which will affect the safety of the battery. In order to balance the electrical isolation performance of the gasket and the flow of the electrolyte, the number of the flow guide holes is set in a proper range, and the flow guide areas also guide the flow of the electrolyte, so that the same values of n1 and n2 can ensure the flow guide effect of the flow guide areas and the flow guide holes.

[0009] According to an embodiment of the present application, the gasket is provided with a pole positioning hole, and a plurality of the flow guide areas are arranged around the pole positioning hole.

[0010] According to an embodiment of the present application, the flow guide hole is configured as a circular hole.

[0011] According to an embodiment of the present application, the diameter of the flow guide area is L1, the diameter of the flow guide hole is L2, and the diameter of the gasket is L3, which satisfy L1 / L2=L2 / L3.

[0012] According to an embodiment of the present application, the thickness of the flow guide area is less than the thickness of the gasket.

[0013] According to an embodiment of the present application, the circumferential outer surface of the gasket is provided with a matching surface which is attached to the inner wall of the battery shell.

[0014] According to an embodiment of the present application, the gasket is provided with a hollow area.

[0015] According to an embodiment of the present application, the gasket is configured as a corrosion-resistant insulating part.

[0016] The battery according to the present application is briefly described below.

[0017] The battery according to the present application comprises the gasket in the above embodiments. Since the battery according to the present application is provided with the gasket in the above embodiments, the design of the flow guide areas and the flow guide holes can guide the uniform flow of the electrolyte, so that the electrolyte is more uniformly distributed in the battery, the retention and accumulation of the electrolyte are reduced, the risk of battery current concentration and local overheating is avoided, and the safety and service life of the battery are improved.

[0018] The power consumption equipment according to the present application is briefly described below.

[0019] According to the electric equipment of the utility model, the gasket is arranged with the battery in the above embodiment, the design of the gasket optimizes the flow of the electrolyte, the cylindrical battery can provide electric energy more efficiently in the charging and discharging process, the overall performance of the electric equipment is improved, the electric equipment has higher operation efficiency, faster response speed and more stable output power.

[0020] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the utility model will become apparent and more readily understood from the following description of the embodiments, in conjunction with the accompanying drawings, in which:

[0022] Fig. 1 is the structure diagram of the gasket according to one embodiment of the utility model;

[0023] Fig. 2 is the schematic diagram of the gasket according to one embodiment of the utility model.

[0024] REFERENCE NUMERALS

[0025] Gasket 1;

[0026] Flow guide area 11;

[0027] Flow guide hole 12;

[0028] Cooperation face 13. DETAILED DESCRIPTION

[0029] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0030] The large cylindrical battery is a kind of high-capacity lithium ion battery, its design generally considers heat management problem, by optimizing internal structure and material, it can still keep stable performance under high temperature environment. In the design of large cylindrical battery, reasonable insulating gasket structure is the key to ensure the safety and performance of battery.

[0031] The gasket according to the embodiments of the utility model is described below with reference to Figs. 1-2

[0032] ​The gasket 1 is provided with a plurality of flow guide areas 11 which are spaced from each other in the circumferential direction, and a plurality of flow guide holes 12 which are spaced from each other are arranged in each flow guide area 11; wherein the number of flow guide areas 11 is n1, the number of flow guide holes 12 in each flow guide area 11 is n2, and n1 = n2 is satisfied.

[0033] The gasket 1 is provided with a plurality of flow guide areas 11 which are spaced from each other in the circumferential direction, and a plurality of flow guide holes 12 which are spaced from each other are arranged in each flow guide area 11; wherein the number of flow guide areas 11 is n1, the number of flow guide holes 12 in each flow guide area 11 is n2, and n1 = n2 is satisfied.

[0034] In processing, the number n1 of flow guide areas 11 on the gasket 1 and the number n2 of flow guide holes 12 in each flow guide area 11 can satisfy n1 = n2, that is, the total number of flow guide areas 11 on the gasket 1 and the number of flow guide holes 12 in each flow guide area 11 are the same. Since the flow guide holes 12 are holes through the gasket 1, too few flow guide holes 12 will affect the flow of electrolyte, and too many flow guide holes 12 will cause the structural strength and electrical isolation performance of the gasket 1 to decrease, which will affect the safety of the battery. In order to balance the electrical isolation performance of the gasket 1 and the flow of electrolyte, the number of flow guide holes 12 needs to be set within an appropriate range, and the flow guide area 11 will also guide the flow of electrolyte. Therefore, by taking the same value of n1 and n2, the flow guide effects of the flow guide area 11 and the flow guide hole 12 can be ensured at the same time.

[0035] In some embodiments, the value of n1 and the value of n2 can be preferably 6.

[0036] According to an embodiment of the utility model, the gasket 1 is provided with a pole coordination hole, and a plurality of flow guide areas 11 are arranged around the pole coordination hole. The gasket 1 improves the stability of the gasket 1 assembly by setting the pole coordination hole. During assembly, at least part of the battery pole can pass through the pole coordination hole, and the gasket 1 is sleeved on the outer periphery of the pole to reduce the shaking of the gasket 1, thereby improving the stability of the gasket 1 after assembly. The plurality of flow guide areas 11 around the pole coordination hole help to guide the uniform distribution of electrolyte on the gasket 1, avoiding the accumulation of electrolyte in the local part of the battery, thereby improving the safety and performance of the battery.

[0037] According to one embodiment of the utility model, the flow guide hole 12 is structured as a circular hole. The design of the circular flow guide hole 12 helps to optimize the transmission path of the current. By reasonably arranging the circular flow guide hole 12, the distribution of the current on the gasket 1 can be ensured to be more uniform, and the risk of current concentration and local overheating can be reduced. At the same time, the circular flow guide hole 12 is relatively easy to control in size and shape in manufacturing, which helps to simplify the manufacturing process of the gasket 1, reduce the production cost, improve the manufacturing precision and consistency of the gasket 1, and ensure that each gasket 1 can meet the performance standards required by the design.

[0038] According to one embodiment of the utility model, the diameter of the flow guide area 11 is L1, the diameter of the flow guide hole 12 is L2, and the diameter of the gasket 1 is L3, which satisfies: L2 / L1=L1 / L3. By accurately controlling the diameter ratio of the flow guide area 11 and the flow guide hole 12, the distribution of the current on the gasket 1 can be ensured to be more uniform, which helps to reduce the risk of current concentration and local overheating, and improve the charging and discharging efficiency and safety of the battery. Specifically, the diameter of the flow guide area 11 is L1, the diameter of the flow guide hole 12 is L2, and the diameter of the gasket 1 is L3, and the number n2 of the flow guide holes 12 in each flow guide area 11 is the same as the total number n1 of the flow guide areas 11. Therefore, designing the proportional relationship of L2 / L1=L1 / L3 can make the flow guide areas 11 uniformly distributed on the gasket 1, and the flow guide holes 12 in each flow guide area 11 are also uniformly distributed. In addition, since the size of the gasket 1 is adapted to the battery, it is necessary to reasonably plan the size of each flow guide area 11 and the size of each flow guide hole 12. If the size of the flow guide area 11 or the size of the flow guide hole 12 is too large, it will lead to a decrease in the overall electrical isolation performance of the gasket 1. If the size of the flow guide area 11 or the size of the flow guide hole 12 is too small, it will affect the flow of the electrolyte. If one of the size of the flow guide area 11 and the size of the flow guide hole 12 is too large or too small, it will lead to uneven distribution of the mass of the gasket 1, and it is easy to have a situation of local high or low strength, which will affect the service life of the gasket 1. Therefore, controlling L2 / L1=L1 / L3 can take into account the electrical isolation performance of the gasket 1 and the performance of the flow guide electrolyte, while making the mass distribution of the gasket 1 more uniform, and thus the service life of the gasket 1 can be improved.

[0039] According to one embodiment of the utility model, the thickness of the flow guide area 11 is less than the thickness of the gasket 1. During processing, the flow guide area 11 can be designed to be sunken to reduce the thickness of the flow guide area 11, so that the thickness of the flow guide area 11 is less than the thickness of the gasket 1. Under the premise of not affecting the use of the gasket 1, the mass of the gasket 1 is reduced, the mass energy density of the battery is effectively improved, and more energy can be stored in each unit mass of the battery.

[0040] According to one embodiment of the utility model, the circumferential outer surface of gasket 1 is provided with a matching surface 13 which is attached to the inner wall of the battery shell. During assembly, the matching surface 13 can be attached to the inner wall surface of the battery shell, thereby improving the sealing performance of the battery.

[0041] According to one embodiment of the utility model, the gasket 1 is provided with a hollow area. The design of the hollow area significantly reduces the material usage of the gasket 1, thereby reducing the production cost. In addition, the hollow area also reduces the mass of the gasket 1, effectively improving the mass energy density of the battery, so that the battery of each unit mass can store more energy.

[0042] According to one embodiment of the utility model, the gasket 1 is constructed as a corrosion-resistant insulating part. The insulating part can achieve the electrical isolation performance of the gasket 1, and the corrosion-resistant material can improve the service life of the gasket 1.

[0043] In some embodiments, the gasket 1 can be made of polypropylene or polyimide and the like.

[0044] The battery according to the utility model will be briefly described below.

[0045] The battery according to the utility model includes the gasket 1 in the above embodiments. Since the battery according to the utility model is provided with the gasket 1 in the above embodiments, the design of the flow guide area 11 and the flow guide hole 12 can guide the uniform flow of the electrolyte, so that the electrolyte is more evenly distributed in the battery, reducing the retention and accumulation of the electrolyte, which can avoid the risk of battery current concentration and local overheating, thereby improving the safety and service life of the battery.

[0046] In some embodiments, the battery can be a cylindrical battery, or other types of batteries.

[0047] The power equipment according to the utility model will be briefly described below.

[0048] The power equipment according to the utility model includes the battery in the above embodiments. Since the power equipment according to the utility model is provided with the battery in the above embodiments, the design of the gasket 1 optimizes the flow of the electrolyte, so that the cylindrical battery can provide electric energy more efficiently during the charging and discharging process, thereby improving the overall performance of the power equipment, so that the power equipment has higher operation efficiency, faster response speed and more stable output power.

[0049] In the description of the utility model, it is understood that the orientation or positional relationship indicated by 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" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0050] In the description of the utility model, "first feature", "second feature" can include one or more features.

[0051] In the description of the utility model, "multiple" means two or more.

[0052] In the description of the utility model, the "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0053] In the description of the utility model, "above", "above" and "above" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.

[0054] In the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the description of the utility model, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A gasket for a battery, characterized by The gasket is provided with a plurality of flow guide areas (11) spaced from each other in the circumferential direction, and each of the flow guide areas (11) is provided with a plurality of flow guide holes (12) spaced from each other. The number of the flow guide areas (11) is n1, and the number of the flow guide holes (12) in each of the flow guide areas (11) is n2, and n1 = n2.

2. The gasket for a battery according to claim 1, characterized by, The gasket is provided with a pole positioning hole, and a plurality of the flow guide areas (11) are arranged around the pole positioning hole.

3. The gasket for a battery according to claim 2, characterized by, The flow guide holes (12) are configured as circular holes.

4. The gasket for a battery according to claim 3, characterized by, The diameter of the flow guide areas (11) is L1, the diameter of the flow guide holes (12) is L2, and the diameter of the gasket is L3, and L2 / L1 = L1 / L3.

5. The gasket for a battery of claim 4, wherein, The thickness of the flow guide areas (11) is less than the thickness of the gasket.

6. The gasket for a battery of claim 1, wherein, The circumferential outer surface of the gasket is provided with a matching surface (13) abutting the inner wall of the battery shell.

7. The gasket for a battery of claim 1, wherein, The gasket is provided with a hollow area.

8. The gasket for a battery of claim 1, wherein, The gasket is configured as a corrosion-resistant insulating part.

9. A battery, characterized by The battery comprises the gasket according to any one of claims 1-8.

10. An electric device, characterized by The battery comprises the gasket according to claim 9.

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