Battery pack end plate structure

Abstract

The utility model relates to an end plate structure of a battery pack. The end plate structure comprises a battery, a steel belt and a plastic steel belt, the steel belt is arranged at the upper end of the battery in a surrounding manner, and the plastic steel belt is arranged at the lower end of the battery in a surrounding manner; the battery comprises a battery body, a first side cover plate, a first end plate, a second side cover plate and a second end plate, the first side cover plate is arranged at one end of the battery body, and the second side cover plate is arranged at the other end of the battery body; the first end plate is arranged on the side surface, far away from the battery body, of the first side cover plate; the second end plate is arranged on the side surface, far away from the battery body, of the second side cover plate; a first bend, a second bend and a third bend are arranged on the side face, away from the first side cover plate, of the first end plate, the third bend is arranged between the first bend and the second bend, and the third bend abuts against the steel belt. The structure is simple, the cost is low, the machining difficulty is small, and the cruising ability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack end plate structure. Background Art

[0002] With the development of technology, power batteries, as an energy device, have received increasing attention and have been widely used in fields such as mobile phones, electric vehicles, and power tools.

[0003] For low-speed vehicle battery packs and energy storage battery packs, end plates on both sides are usually used to sandwich the batteries, and then steel belts or plastic-steel belts are used for bundling and fixing, and then fixed to the chassis with screws. Commonly used end plates on the market generally adopt metal end plates (such as aluminum alloy die-cast end plates or sheet metal end plates). The metal end plates have high prices, complex structures, and heavy weights, which are likely to reduce the endurance of the battery pack. Summary of the Utility Model

[0004] Based on this, the utility model provides a battery pack end plate structure, aiming to solve the technical problems of high price, complex structure, and heavy weight of the existing end plates, which are likely to reduce the endurance of the battery pack. The structure of this application is simple, with low cost and good endurance.

[0005] To achieve the above object, the embodiment of the utility model proposes the following technical solution: A battery pack end plate structure, including a battery, a steel belt, and a plastic-steel belt; the steel belt is disposed around the upper end of the battery, and the plastic-steel belt is disposed around the lower end of the battery; the battery includes a battery body, a first side cover plate, a first end plate, a second side cover plate, and a second end plate; the first side cover plate is disposed at one end of the battery body, and the second side cover plate is disposed at the other end of the battery body; the first end plate is disposed on the side of the first side cover plate away from the battery body; the second end plate is disposed on the side of the second side cover plate away from the battery body;

[0006] On the side of the first end plate away from the first side cover plate, there are a first bend, a second bend, and a third bend. The third bend is disposed between the first bend and the second bend, and the third bend is in contact with the steel belt.

[0007] As a preferred embodiment, the first bend is disposed at the end of the side close to the steel belt, and the first bend is bent downward from top to bottom.

[0008] As a preferred embodiment, the steel belt is disposed between the first bend and the third bend, and the distance between the first bend and the third bend is greater than the width of the steel belt. By setting the first bend, it can effectively avoid interference with the steel belt during assembly and facilitate the rapid assembly of the steel belt.

[0009] As a preferred embodiment, the second bend is disposed between the third bend and the plastic-steel strip. The second bend extends from the side surface in a direction perpendicular to the side surface to form a first folded portion, and the direction is away from the first side cover plate. By providing the second bend, an assembly surface of the battery pack end plate structure can be formed, facilitating the fixing of the structure within the chassis.

[0010] As a preferred embodiment, first positioning holes for fixing the battery pack end plate structure within the chassis are provided at both ends of the first folded portion.

[0011] As a preferred embodiment, the third bend extends outward from the side surface to form a first bent portion, and the first bent portion is arranged in a shape of a hanging hook; a gap is provided between the third bend and the second bend. By providing the third bend, the steel strip can be limited, and at the same time, a hanging hook for hanging the battery pack end plate structure can be formed, facilitating the hanging of the battery pack end plate structure.

[0012] As a preferred embodiment, a fourth bend, a fifth bend, and a sixth bend are provided on the side surface of the second end plate away from the second side cover plate. The sixth bend is disposed between the fourth bend and the fifth bend, and the sixth bend is in contact with the steel strip.

[0013] As a preferred embodiment, the fourth bend is disposed at the end of the side surface close to the steel strip, and the fourth bend is bent downward.

[0014] As a preferred embodiment, the steel strip is disposed between the fourth bend and the sixth bend, and the distance between the fourth bend and the sixth bend is greater than the width of the steel strip. By providing the fourth bend, interference with the steel strip during assembly can be effectively avoided, facilitating the rapid assembly of the steel strip.

[0015] As a preferred embodiment, the fifth bend is disposed between the sixth bend and the plastic-steel strip. The fifth bend extends from the side surface in a direction perpendicular to the side surface to form a second folded portion, and the direction is away from the second side cover plate. By providing the fifth bend, an assembly surface of the battery pack end plate structure can be formed, facilitating the fixing of the structure within the chassis.

[0016] As a preferred embodiment, second positioning holes for fixing the battery pack end plate structure within the chassis are provided at both ends of the second folded portion.

[0017] As a preferred embodiment, the sixth bend extends outward from the side surface to form a second bent portion, and the second bent portion is arranged in the shape of a hanging hook; a gap is provided between the sixth bend and the fifth bend. By providing the sixth bend, the steel strip can be limited, and at the same time, a hanging hook for hanging the end plate structure of the battery pack can be formed, which is convenient for hanging the end plate structure of the battery pack.

[0018] As a preferred embodiment, the first end plate and the second end plate are symmetrically arranged; the first side cover plate and the second side cover plate are symmetrically arranged;

[0019] The first bend and the fourth bend are symmetrically arranged; the second bend and the fifth bend are symmetrically arranged; the third bend and the sixth bend are symmetrically arranged.

[0020] In the structure of the present application, through the side cover plate, the insulation between the battery and the end plate can be ensured; through the end plate, the battery can be fixed in the chassis; the steel strip and the plastic steel strip can effectively fix and bind the battery.

[0021] The beneficial effects achieved by the present utility model: By providing three bending structures on the first end plate and the second end plate in the present application, while effectively binding and fixing the end plate structure of the battery pack, it is also convenient to fix the end plate structure of the battery pack in the chassis; and through the bending structure, the end plate structure of the battery pack can be quickly hung, which is convenient and practical. The structure of the present application is simple, the cost is low, the processing difficulty is small, the weight of the end plate can be effectively reduced, and the endurance ability is good, and it can be applied to the battery structures of low-speed vehicles and energy storage batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the end plate structure of the battery pack according to an embodiment of the present utility model;

[0024] Figure 2 It is Figure 1 an exploded schematic diagram of the end plate structure of the battery pack;

[0025] Figure 3 It is Figure 1 a schematic diagram of the structure of the first end plate;

[0026] Figure 4 It is Figure 1Schematic diagram of the second end plate.

[0027] The realization of the purpose, functional characteristics and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In this application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0031] 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 can 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.

[0032] In addition, if there are descriptions such as "first", "second" in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0033] Specifically, as Figures 1 to 3 shown, an embodiment of the present utility model provides a battery pack end plate structure, including a battery 10, a steel strip 20, and a plastic-steel strip 30; the steel strip 20 is disposed around the upper end of the battery 10, and the plastic-steel strip 30 is disposed around the lower end of the battery 10; the battery 10 includes a battery body 11, a first side cover plate 12, a first end plate 13, a second side cover plate 14, and a second end plate 15; the first side cover plate 12 is disposed at one end of the battery body 11, and the second side cover plate 14 is disposed at the other end of the battery body 11; the first end plate 13 is disposed on the side surface of the first side cover plate 12 away from the battery body 11; the second end plate 15 is disposed on the side surface of the second side cover plate 14 away from the battery body 11;

[0034] On the side surface of the first end plate 13 away from the first side cover plate 12, a first bending 131, a second bending 132, and a third bending 133 are provided. The third bending 133 is disposed between the first bending 131 and the second bending 132, and the third bending 133 is in contact with the steel strip 20.

[0035] In an embodiment of the present application, the battery body 11 includes a plurality of stacked battery cells. Partition plates are provided between the upper ends of adjacent two battery cells and between the lower ends of adjacent two battery cells. The number of stacked battery cells can be set according to actual needs, and can be three, or eight, or fifteen, etc. A cover plate 40 is provided on the top of the battery body, and the cover plate 40 is adapted to the battery body.

[0036] As a preferred embodiment, the first bending 131 is disposed on the end of the side surface close to the steel strip 20, and the first bending 131 is bent downward from top to bottom.

[0037] As a preferred embodiment, the steel strip 20 is disposed between the first bending 131 and the third bending 133, and the distance between the first bending 131 and the third bending 133 is greater than the width of the steel strip 20. By providing the first bending 131, interference to the steel strip 20 during assembly can be effectively avoided, facilitating the rapid assembly of the steel strip 20.

[0038] As a preferred embodiment, the second bending 132 is disposed between the third bending 133 and the plastic-steel strip 30. The second bending 132 extends from the side surface in a direction perpendicular to the side surface to form a first folded portion A, and the direction is away from the first side cover plate 12. By providing the second bending 132, an assembly surface of the battery pack end plate structure can be formed, facilitating the fixing of the structure in the chassis.

[0039] As a preferred embodiment, first positioning holes A1 for fixing the battery pack end plate structure inside the chassis are provided at both ends of the first folding portion A. When it is necessary to fix the battery pack end plate structure inside the chassis, screws can be passed through the first positioning holes and then tightened for fixation.

[0040] As a preferred embodiment, the third bending 133 extends outward from the side surface to form a first bending portion 1331, and the first bending portion 1331 is arranged in the shape of a hanging hook; a gap is provided between the third bending 133 and the second bending 132. By providing the third bending 133, the steel strip 20 can be limited, and at the same time, a hanging hook for hanging the battery pack end plate structure can be formed, which is convenient for hanging the battery pack end plate structure.

[0041] As a preferred embodiment, a fourth bending 151, a fifth bending 152, and a sixth bending 153 are provided on the side surface of the second end plate 15 away from the second side cover plate 14. The sixth bending 153 is arranged between the fourth bending 151 and the fifth bending 152, and the sixth bending 153 is arranged in contact with the steel strip 20.

[0042] As a preferred embodiment, the fourth bending 151 is arranged at the end of the side surface close to the steel strip 20, and the fourth bending 151 is bent downward.

[0043] As a preferred embodiment, the steel strip 20 is arranged between the fourth bending 151 and the sixth bending 153, and the distance between the fourth bending 151 and the sixth bending 153 is greater than the width of the steel strip 20. By providing the fourth bending 151, interference with the steel strip 20 during assembly can be effectively avoided, which is convenient for the rapid assembly of the steel strip 20.

[0044] As a preferred embodiment, the fifth bending 152 is arranged between the sixth bending 153 and the plastic steel strip 30. The fifth bending 152 extends from the side surface in a direction perpendicular to the side surface to form a second folding portion B, and the direction is away from the second side cover plate 14. By providing the fifth bending 152, an assembly surface of the battery pack end plate structure can be formed, which is convenient for fixing the structure inside the chassis.

[0045] As a preferred embodiment, second positioning holes B1 for fixing the battery pack end plate structure inside the chassis are provided at both ends of the second folding portion B. When it is necessary to fix the battery pack end plate structure inside the chassis, screws can be passed through the second positioning holes and then tightened for fixation.

[0046] As a preferred embodiment, the sixth bend 153 extends outward from the side surface to form a second bent portion 1531, and the second bent portion 1531 is arranged in the shape of a hanging hook; a gap is provided between the sixth bend 153 and the fifth bend 152. By providing the sixth bend 153, the steel strip 20 can be limited, and at the same time, a hanging hook for hanging the battery pack end plate structure can be formed, which is convenient for hanging the battery pack end plate structure.

[0047] As a preferred embodiment, the first end plate 13 and the second end plate 15 are symmetrically arranged; the first side cover plate 12 and the second side cover plate 14 are symmetrically arranged;

[0048] The first bend 131 and the fourth bend 151 are symmetrically arranged; the second bend 132 and the fifth bend 152 are symmetrically arranged; the third bend 133 and the sixth bend 153 are symmetrically arranged.

[0049] In the structure of the present application, through the side cover plate, the insulation between the battery and the end plate can be ensured; through the end plate, the battery can be fixed in the chassis; the steel strip and the plastic steel strip can effectively fix and bundle the battery.

[0050] In the present application, by providing three bending structures on the first end plate and the second end plate, while effectively bundling and fixing the battery pack end plate structure, it is also convenient to fix the battery pack end plate structure in the chassis; and through the bending structure, the battery pack end plate structure can be quickly hung, which is convenient and practical. The structure of the present application is simple, with low cost and small processing difficulty, can effectively reduce the weight of the end plate, has good battery life, and can be applied to the battery structures of low-speed vehicles and energy storage batteries.

[0051] In the description of this specification, the description with reference to terms such as "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0052] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0053] The above are only the preferred embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. A battery pack end plate structure, characterized in that: The battery comprises a battery, a steel belt and a plastic steel belt; the steel belt is enclosed and arranged at the upper end of the battery, and the plastic steel belt is enclosed and arranged at the lower end of the battery; the battery comprises a battery body, a first side cover plate, a first end plate, a second side cover plate and a second end plate; the first side cover plate is arranged at one end of the battery body, and the second side cover plate is arranged at the other end of the battery body; the first end plate is arranged on the side of the first side cover plate away from the battery body; the second end plate is arranged on the side of the second side cover plate away from the battery body; A first bend, a second bend and a third bend are arranged on the side of the first end plate away from the first side cover plate. The third bend is arranged between the first bend and the second bend, and the third bend is arranged in contact with the steel belt.

2. The battery pack end plate structure according to claim 1, characterized in that: The first bend is arranged on the end of the side surface close to the steel strip, and the first bend is bent from top to bottom.

3. The battery pack end plate structure according to claim 2, characterized in that: The steel strip is arranged between the first bend and the third bend, and the distance between the first bend and the third bend is greater than the width of the steel strip.

4. The battery pack end plate structure according to claim 1, characterized in that: The second bend is arranged between the third bend and the plastic-steel belt, and the second bend extends from the side surface in a direction perpendicular to the side surface to form a first folded portion, and the direction is a direction away from the first side cover plate; Both ends of the first folding portion are provided with first positioning holes for fixing the battery pack end plate structure in the chassis.

5. The battery pack end plate structure according to claim 1, characterized in that: The third bend extends outward from the side surface to form a first bend portion, and the first bend portion is arranged in a hanging hook shape; a gap is arranged between the third bend and the second bend.

6. The battery pack end plate structure according to claim 1, characterized in that: A fourth bend, a fifth bend and a sixth bend are arranged on the side of the second end plate away from the second side cover plate. The sixth bend is arranged between the fourth bend and the fifth bend, and the sixth bend is arranged in contact with the steel belt.

7. The battery pack end plate structure according to claim 6, characterized in that: The fourth bend is arranged on the side surface close to the end of the steel strip, and the fourth bend is bent from top to bottom; The steel belt is arranged between the fourth bend and the sixth bend, and the distance between the fourth bend and the sixth bend is greater than the width of the steel belt.

8. The battery pack end plate structure according to claim 6, characterized in that: The fifth bend is arranged between the sixth bend and the plastic-steel strip, and the fifth bend extends from the side surface in a direction perpendicular to the side surface to form a second folded portion, and the direction is a direction away from the second side cover plate; Second positioning holes for fixing the battery pack end plate structure in the chassis are provided at both ends of the second folding portion.

9. The battery pack end plate structure according to claim 6, characterized in that: The sixth bend extends outward from the side surface to form a second bend portion, and the second bend portion is arranged in a hanging hook shape; a gap is arranged between the sixth bend and the fifth bend.

10. The battery pack end plate structure according to claim 6, characterized in that: The first end plate and the second end plate are symmetrically arranged; the first side cover plate and the second side cover plate are symmetrically arranged; The first bend is symmetrically arranged with the fourth bend; the second bend is symmetrically arranged with the fifth bend; and the third bend is symmetrically arranged with the sixth bend.

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