Battery shell, battery and battery pack

Abstract

The utility model provides a battery shell, a battery and a battery pack, and belongs to the field of battery structures. The battery shell comprises a main body, an accommodating cavity is formed in the main body, and an opening structure communicated with the accommodating cavity is formed at a first end in the height direction of the main body; the plate body assembly is arranged at the second end of the main body in the height direction; and the sealing cover is correspondingly arranged at the opening structure. The sealing cover and the plate body assembly are respectively arranged at the first end and the second end in the height direction of the main body, so that the thickness of the sealing cover can be reduced, and the cost can be reduced while the stability of the battery structure is not influenced.

Description

Technical Field

[0001] The present application relates to the field of battery structures, and in particular to a battery housing, a battery and a battery pack. Background Art

[0002] At present, the battery case includes two parts: a main body and a sealing cover. One side of the main body is formed into a through-hole surface and welded to the sealing cover. The positive and negative poles, rivet blocks, upper plastic, lower plastic and sealing ring and other plate components are arranged on the sealing cover. Due to the arrangement of the plate components, in order to ensure the structural strength of the battery, the sealing cover needs to be set thicker, which will increase the product cost. Utility Model Content

[0003] In view of this, the purpose of the present application is to provide a battery housing, a battery and a battery pack to solve the problem that the existing battery housing needs to have a thicker sealing cover, which leads to increased costs.

[0004] According to a first aspect of the present utility model, a battery housing is provided, wherein the battery housing comprises:

[0005] A main body, wherein a receiving cavity is formed inside the main body, and a first end of the main body in a height direction is formed as an opening structure communicating with the receiving cavity;

[0006] a plate assembly, disposed at the second end in the height direction of the main body; and

[0007] The sealing cover is correspondingly arranged at the opening structure.

[0008] Preferably, the thickness of the second end of the main body in the height direction is 0.8 mm to 2 mm.

[0009] Preferably, the thickness of both ends of the main body in the width direction is 0.15 mm to 1.2 mm.

[0010] Preferably, the thickness of both ends of the main body in the length direction is 0.15 mm to 1.2 mm.

[0011] Preferably, the plate assembly comprises a positive pole, an explosion-proof valve and a negative pole arranged in sequence along the length direction of the main body.

[0012] Preferably, a positive pole hole, an explosion-proof valve hole and a negative pole hole corresponding to the positive pole, the explosion-proof valve and the negative pole are formed at the second end in the height direction of the main body.

[0013] Preferably, a liquid injection hole is formed between the explosion-proof valve hole and the negative electrode column hole.

[0014] Preferably, the positive electrode column hole and the negative electrode column hole are both formed with a step surface, the step surface is higher than the end surface of the main body, or the step surface is lower than the end surface of the main body, or the step surface is flush with the end surface of the main body.

[0015] According to a second aspect of the present invention, a battery is provided, wherein the battery comprises the battery housing as described above.

[0016] According to a third aspect of the present invention, a battery pack is provided, wherein the battery pack is provided with the battery as described above.

[0017] According to the battery housing, battery and battery pack of the utility model, the sealing cover and the plate assembly are respectively arranged at the first end and the second end in the height direction of the main body, so that the thickness of the sealing cover can be reduced, which can reduce the cost without affecting the stability of the battery structure.

[0018] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a first embodiment of the battery housing according to the utility model;

[0021] Figure 2 This is a second embodiment of the battery housing according to the utility model;

[0022] Figure 3 This is a third embodiment of the battery housing according to the present utility model.

[0023] Icon: 1-main body; 10-positive pole hole; 11-negative pole hole; 12-explosion-proof valve hole; 13-liquid injection hole. DETAILED DESCRIPTION

[0024] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0025] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0026] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0027] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0028] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0029] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0030] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0031] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0032] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0033] According to a first aspect of the present utility model, a battery housing is provided. Figures 1 to 3 As shown, the battery housing of this embodiment includes a main body 1, a plate assembly and a sealing cover, and the plate assembly and the sealing cover are respectively arranged at both ends of the height direction of the main body 1. In the following, the specific structure of the above-mentioned parts of the battery housing according to the utility model will be described in detail.

[0034] In this embodiment, if Figures 1 to 3As shown, the main body 1 is formed into a rectangular parallelepiped slot structure, and a receiving cavity is formed inside it to prevent components such as pole pieces and electrolyte. Further, the first end of the main body 1 in the height direction is formed into an opening structure connected to the receiving cavity, and the sealing cover is correspondingly arranged at the opening structure, and it is connected and fixed to the main body 1 by welding; further, the plate assembly is arranged at the second end of the main body 1 in the height direction.

[0035] Preferably, the thickness of the second end of the main body 1 in the height direction is 0.8 mm to 2 mm, the thickness of both ends of the main body 1 in the width direction is 0.15 mm to 1.2 mm, and the thickness of both ends of the main body 1 in the length direction is 0.15 mm to 1.2 mm. The above numerical range is the optimal range that can ensure the stability of the battery structure after multiple experiments, but the specific thickness of each side of the main body 1 is not limited.

[0036] Specifically, the plate assembly includes a positive electrode column, an explosion-proof valve and a negative electrode column arranged in sequence along the length direction of the main body 1, and a positive electrode column hole 10, an explosion-proof valve hole 12 and a negative electrode column hole 11 corresponding to the positive electrode column, the explosion-proof valve and the negative electrode column, respectively, are formed at the second end of the main body 1 in the height direction, and all three are connected to the accommodating cavity; in addition, an injection hole 13 is also formed between the explosion-proof valve hole 12 and the negative electrode column hole 11 for injecting electrolyte into the accommodating cavity.

[0037] More specifically, if Figures 1 to 3 As shown, the positive electrode post hole 10 and the negative electrode post hole 11 are both formed with a step surface, and the step surface can be higher than the end surface of the main body 1 to form a boss post hole (such as Figure 1 The step surface can also be lower than the end surface of the main body 1 to form a groove pole hole (such as Figure 2 Alternatively, the step surface may be flush with the end surface of the main body 1 to form a conventional pole hole (such as Figure 3 shown).

[0038] It should be noted that the specific size, position and shape of the positive pole hole 10, explosion-proof valve hole 12, negative pole hole 11 and injection hole 13 are not fixed, as long as they can facilitate the stable connection of the plate assembly to meet the performance of the battery.

[0039] By using the battery housing as described above in this embodiment, the sealing cover and the plate assembly are respectively arranged at the first end and the second end in the height direction of the main body 1, so that the thickness of the sealing cover can be reduced, which can reduce the cost without affecting the stability of the battery structure.

[0040] In addition, according to a second aspect of the present invention, a battery is provided, wherein the battery is provided with the battery housing as described above.

[0041] In addition, according to a third aspect of the present invention, a battery pack is provided, wherein the battery pack is provided with the battery as described above.

[0042] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be described in the protection scope of the claims.

Claims

1. A battery housing, characterized in that: The battery housing comprises: A main body, wherein a receiving cavity is formed inside the main body, and a first end of the main body in a height direction is formed as an opening structure communicating with the receiving cavity; a plate assembly, disposed at the second end in the height direction of the main body; and The sealing cover is correspondingly arranged at the opening structure.

2. The battery housing according to claim 1, characterized in that: The thickness of the second end of the main body in the height direction is 0.8 mm to 2 mm.

3. The battery housing according to claim 1, characterized in that: The thickness of both ends of the main body in the width direction is 0.15 mm to 1.2 mm.

4. The battery housing according to claim 1, characterized in that: The thickness of both ends of the main body in the length direction is 0.15 mm to 1.2 mm.

5. The battery housing according to claim 1, characterized in that: The plate assembly includes a positive pole, an explosion-proof valve and a negative pole which are sequentially arranged along the length direction of the main body.

6. The battery casing according to claim 5, characterized in that: A positive pole hole, an explosion-proof valve hole and a negative pole hole corresponding to the positive pole, the explosion-proof valve and the negative pole are formed at the second end of the main body in the height direction.

7. The battery casing according to claim 6, characterized in that: A liquid injection hole is also formed between the explosion-proof valve hole and the negative pole hole.

8. The battery case according to claim 6, characterized in that: The positive electrode column hole and the negative electrode column hole are both formed with a step surface, the step surface is higher than the end surface of the main body, or the step surface is lower than the end surface of the main body, or the step surface is flush with the end surface of the main body.

9. A battery, characterized in that: The battery is provided with the battery case according to any one of claims 1 to 8.

10. A battery pack, characterized in that: The battery pack is provided with the battery as claimed in claim 9.

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