Battery fixing structure

Abstract

The utility model discloses a battery fixing structure, relates to battery technical field, wherein the battery fixing structure includes box, clamping subassembly and battery pack, the box has the accommodation cavity, the clamping subassembly is provided in the accommodation cavity, and includes four splint and a plurality of fixing piece, the battery pack is provided with the battery pack. The four clamping plates are arranged in the containing cavity, a clamping space with the upper end and the lower end being open is defined by the four clamping plates, each clamping plate can be movably arranged, the fixing pieces are used for fixing the clamping plates in the containing cavity after the clamping plates move, and the battery pack is arranged in the clamping space. According to the technical scheme, the clamping space is defined by the four clamping plates, the battery pack arranged in the clamping space is limited from four directions, and the clamping plates are fixed by matching with the fixing pieces, so that the battery pack can be fixed; the possibility that the battery pack moves in the containing cavity can be reduced, and the stability of electric connection of the battery pack is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, especially a kind of battery fixed structure. BACKGROUND

[0002] During the vehicle driving process or when battery module is subjected to vibration and impact, battery cell is prone to displacement. For example, when electric vehicle drives on bumpy road, battery module will constantly sway. Without constraint, the relative position between battery cells can change, causing problems in electrical connection inside battery module. Loose connection can cause intermittent power outage or high-resistance connection points, increasing energy loss and possibly causing local overheating. SUMMARY

[0003] The utility model discloses a battery fixed structure, aiming at at least solving the technical problem that battery cell of battery module is prone to position in related technology and affects electrical connection.

[0004] To achieve the above-mentioned purpose, the utility model provides a battery fixed structure, comprising:

[0005] Box body with containing cavity;

[0006] Clamping assembly arranged in the containing cavity, comprising four clamping plates and multiple fixing members, the four clamping plates form a clamping space with open upper and lower ends, each clamping plate is movably arranged, the fixing member is used to fix the clamping plate in the containing cavity after the clamping plate moves; and,

[0007] Battery pack arranged in the clamping space.

[0008] In an embodiment, the four clamping plates include two first clamping plates arranged opposite in a first horizontal direction and two second clamping plates arranged opposite in a second horizontal direction.

[0009] The two first clamping plates are located between the two second clamping plates.

[0010] In an embodiment, the length of the first clamping plate is less than that of the second clamping plate.

[0011] In an embodiment, the clamping plate has a first end in the horizontal direction, and the clamping plate also has an inner side facing the clamping space.

[0012] The first ends of the four clamping plates abut the inner sides of adjacent clamping plates in sequence.

[0013] In an embodiment, the fixing member includes a first fixing member fixedly connecting two adjacent clamping plates, and a second fixing member fixedly connecting the clamping plate and the side wall of the containing cavity.

[0014] In an embodiment, the fixing member comprises a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are arranged in a bent manner, and a through hole is arranged on each of the first connecting portion and the second connecting portion, the through hole is used for the screw to pass through.

[0015] In an embodiment, upper ends of the four clamping plates are higher than the battery pack to enclose a free space communicating with the clamping space.

[0016] The first fixing member is arranged in the free space.

[0017] In an embodiment, the battery pack comprises a plurality of battery cells, and a heat insulation plate is arranged between each of the battery cells.

[0018] In an embodiment, a phase change material is filled between each of the clamping plates and the side wall of the accommodating cavity.

[0019] In an embodiment, the box body comprises a cover plate and a main body portion, the main body portion has the accommodating cavity, and the cover plate covers the main body portion.

[0020] Upper ends of the four clamping plates are in contact with the inner side of the cover plate.

[0021] In the technical scheme of the utility model, the box body has an accommodating cavity, a clamping assembly is arranged in the accommodating cavity, and the clamping assembly comprises four clamping plates and a plurality of fixing members, the four clamping plates enclose a clamping space with open upper and lower ends, each of the clamping plates is movably arranged, the fixing members are used to fix the clamping plates in the accommodating cavity after the clamping plates are moved, and a battery pack is arranged in the clamping space. In this way, the battery pack is fixed by the four clamping plates enclosing the clamping space, limiting the battery pack from four directions, and cooperating with the fixing members to fix the clamping plates, so that the possibility of the battery pack moving in the accommodating cavity is reduced, and the stability of the electrical connection of the battery pack is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0023] Figure 1 It is a three-dimensional structure schematic view of an embodiment of the battery fixing structure provided by the utility model;

[0024] Figure 2 For Figure 1 A local enlarged view at the middle A;

[0025] Figure 3 A three-dimensional structural schematic diagram of another embodiment of the battery fixing structure provided by the utility model;

[0026] Figure 4 For Figure 1 A planar structural schematic diagram of the battery fixing structure in the middle.

[0027] Explanation of the reference signs:

[0028] 100, battery fixing structure; 1, box body; 101, containing cavity; 11, cover plate; 12, main body part; 2, clamping plate; 201, empty space; 21, first clamping plate; 22, second clamping plate; 3, fixing piece; 31, first connecting part; 32, second connecting part; 33, through hole; 4, battery pack; 5, heat insulation plate.

[0029] The realization, functional features and advantages of the utility model will be further described by combining with the embodiments and referring to the drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below by combining with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0031] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0033] During the driving of the vehicle or when the battery module is subjected to vibration and impact, the battery cells are prone to displacement. For example, when the electric vehicle drives on the bumpy road, the battery module will constantly sway. Without constraint, the relative position between the battery cells can change, causing problems in the electrical connection inside the battery module. Loose connection can cause intermittent power failure or high resistance connection points, increasing energy loss and possibly causing local overheating. The battery cells in the battery module need to be in close contact to ensure good electrical conduction. Without clamping structure, the contact pressure between the battery cells is insufficient. For example, in a lithium ion battery module, when the contact is poor, the internal resistance between the batteries will increase. During charging and discharging, because the internal resistance increases, more heat will be generated in the battery, affecting the performance and life of the battery. Moreover, poor contact can also cause unstable output voltage of the battery module, affecting the normal power supply of the entire battery system.

[0034] The main purpose of the utility model is to provide a battery fixing structure, which aims to at least solve the technical problem that the battery cells of the battery module are prone to position and affect the electrical connection in the related art.

[0035] Please refer to Figures 1 to 4 In an embodiment of the utility model, the battery fixing structure 100 includes a box body 1, a clamping assembly and a battery pack 4, the box body 1 has a containing cavity 101, the clamping assembly is arranged in the containing cavity 101, includes four clamping plates 2 and a plurality of fixing pieces 3, four clamping plates 2 are enclosed to form the clamping space with open upper and lower ends, each clamping plate 2 can be movably arranged, the fixing piece 3 is used to fix the clamping plate 2 in the containing cavity 101 after the clamping plate 2 moves, and the battery pack 4 is arranged in the clamping space.

[0036] In the technical scheme of the utility model, the box 1 has the containing cavity 101, the clamping assembly is arranged in the containing cavity 101, including four clamping plates 2 and a plurality of fixed parts 3, four clamping plates 2 are enclosed to form the clamping space with open upper and lower ends, each clamping plate 2 can be movably arranged, the fixed part 3 is used to fix the clamping plate 2 in the containing cavity 101 after the clamping plate 2 moves, and the battery pack 4 is arranged in the clamping space. By enclosing the four clamping plates 2 to form the clamping space, the battery pack 4 placed in the clamping space is limited from four directions, and the clamping plate 2 is fixed by the fixed part 3, so that the battery pack 4 can be fixed, and the possibility that the battery pack 4 moves in the containing cavity 101 can be reduced, and the stability of the electrical connection of the battery pack 4 is ensured.

[0037] The arrangement form of the four clamping plates 2 has multiple forms, please refer to Figure 1 In an embodiment, the four clamping plates 2 include two first clamping plates 21 arranged opposite in a first horizontal direction and two second clamping plates 22 arranged opposite in a second horizontal direction, and the two first clamping plates 21 are located between the two second clamping plates 22. In this way, when the battery pack 4 is fixed, the two first clamping plates 21 can be first attached to the two sides of the battery pack 4, and the first clamping plate 21 and the box 1 are fixed by the fixed part 3, so that the two sides of the battery pack 4 can be clamped and fixed, and then the other two sides of the battery pack 4 can be fixed by the two second clamping plates 22.

[0038] It can be understood that when the two first clamping plates 21 are first used to fix the opposite two sides of the battery pack 4, the two first clamping plates 21 need to be aligned with the edges of the battery pack 4, so that the second clamping plate 22 can subsequently fix the other two sides of the first clamping plate 21 and the battery pack 4, and therefore in the embodiment of the utility model, please refer to Figure 1 and Figure 4 The length of the first clamping plate 21 is less than that of the second clamping plate 22. In this way, when the first clamping plate 21 is used to clamp the battery pack 4, alignment will be more convenient.

[0039] The four clamping plates 2 have another form, please refer to the accompanying Figure 3 The clamping plate 2 has a first end in the horizontal direction, and the clamping plate 2 also has an inner side facing the clamping space. The first ends of the four clamping plates 2 abut the inner sides of adjacent clamping plates 2 in turn. In this way, when the battery pack 4 is fixed, the two adjacent clamping plates 2 need to be aligned with the battery pack 4 first, and then fixed by the fixed part 3 after alignment, and then the other two clamping plates 2 are aligned and fixed with the battery pack 4 after fixing.

[0040] In comparison, each of the two distribution forms of the four clamping plates 2 has respective advantages, and the Figure 1 The form shown is more convenient to fix, and only a single clamping plate 2 needs to be aligned with the battery pack 4 each time; the Figure 2 The form shown has the advantage that the clamping plate 2 can be made a little longer, so that the size of the clamping space can be adjusted to clamp and fix battery packs 4 of different sizes, and the dimensional accuracy requirement for the clamping plate 2 is also lower.

[0041] There are various ways to fix the clamping plate 2 in the accommodating cavity 101, and in some embodiments, only the clamping plate 2 and the side wall of the accommodating cavity 101 can be fixedly connected, and in the embodiment of the utility model, please refer to Figure 4 The fixing member 3 includes a first fixing member 3 that fixedly connects two adjacent clamping plates 2, and a second fixing member 3 that fixedly connects the clamping plate 2 and the side wall of the accommodating cavity 101. In this way, the clamping plate 2 and the side wall of the accommodating cavity 101 are fixed, and two adjacent clamping plates 2 are also fixed, so that the four clamping plates 2 can more stably and reliably fix the battery pack 4.

[0042] The form of the fixing member 3 is various, which can be a clamp, a screw directly fixed, or an adhesive, etc. In the embodiment of the utility model, please refer to Figure 2 The fixing member 3 includes a first connecting portion 31 and a second connecting portion 32, the first connecting portion 31 and the second connecting portion 32 are bent, and the first connecting portion 31 and the second connecting portion 32 are provided with through holes 33, and the through holes 33 are used for the screw to pass through. In this way, when fixing two clamping plates 2, the first connecting portion 31 and the second connecting portion 32 are respectively attached to two adjacent clamping plates 2, and after the first connecting portion 31 and one of the clamping plates 2 are fixed by the screw passing through the through hole 33, the other clamping plate 2 is fixed by the screw; meanwhile, when the clamping plate 2 and the side wall of the accommodating cavity 101 are fixed, it is still the same, that is, the fixing member 3 in this form can fix two clamping plates 2, and can also fix the clamping plate 2 and the side wall of the accommodating cavity 101, which is highly versatile, and is stable, fast and convenient to fix.

[0043] When the two clamping plates 2 are fixedly connected by the first fixing member 3, the first fixing member 3 is affected when fixed on the inner side due to the battery pack 4, and the operation is not affected when fixed on the outer side due to the gap between the clamping plate 2 and the side wall of the accommodating cavity 101. In the embodiment of the utility model, the upper end of the four clamping plates 2 is higher than the battery pack 4 to enclose the empty space 201 communicating with the clamping space, and the first fixing member 3 is arranged in the empty space 201. In this way, the empty space 201 has enough space to fix the two clamping plates 2 by the first fixing member 3, and is not affected by the battery pack 4, so that the fixing of the first fixing member 3 is more convenient.

[0044] Even if the battery pack 4 is clamped and fixed by the four clamping plates 2, the battery pack 4 may still have a heat runaway caused by a problem in electrical connection. In order to reduce the possibility of heat runaway, in the embodiment of the utility model, please refer to Figure 1 and Figure 3 The battery pack 4 includes a plurality of battery monomers, and a heat insulation plate 5 is arranged between each battery monomer. In this way, even if a single battery monomer has a heat runaway problem, the heat can be blocked by the heat insulation plate 5, reducing the possibility of being transmitted to other battery monomers and improving the safety of the whole battery pack 4.

[0045] In the embodiment of the utility model, in order to further improve the protection ability of the battery pack 4, a phase change material is filled between each clamping plate 2 and the side wall of the accommodating cavity 101. In this way, when the temperature of the battery pack 4 rises, the phase change material can absorb heat and change phase, thereby reducing the temperature of the battery pack 4. Furthermore, when the battery fixing structure 100 is subjected to external impact, the phase change material can also improve the buffering performance.

[0046] Further, in order to improve the cooling effect of the phase change material between the clamping plate 2 and the side wall of the accommodating cavity 101 on the battery pack 4, the material of the clamping plate 2 is preferably a material with good thermal conductivity.

[0047] It can be understood that, as the vehicle runs, the phase change material will also follow the activity, and can be in contact with the battery pack 4 to affect the electrical connection of the battery pack 4, so in the embodiment of the utility model, the box 1 includes cover plate 11 and main part 12, the main part 12 has the containing cavity 101, the cover plate 11 covers the main part 12, four upper ends of the clamping plate 2 are in contact with the inner side of the cover plate 11. Thus, when the cover plate 11 covers the containing cavity 101, it will be in contact with the upper end of the clamping plate 2, thereby separating the battery pack 4 and the phase change material, which can reduce the possibility of the phase change material contacting the battery pack 4.

[0048] The above is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the attached drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A battery fixing structure, characterized in that, include: The box-shaped enclosure has a receiving cavity; A clamping assembly is disposed within the receiving cavity, comprising four clamping plates and multiple fixing members. The four clamping plates enclose a clamping space with openings at both the top and bottom. Each clamping plate is movable, and the fixing members are used to fix the clamping plate within the receiving cavity after the clamping plate is moved. as well as, The battery pack is disposed within the clamping space.

2. The battery fixing structure as described in claim 1, characterized in that, The four clamps include two first clamps that are arranged opposite each other in a first horizontal direction and two second clamps that are arranged opposite each other in a second horizontal direction; The two first clamps are located between the two second clamps.

3. The battery fixing structure as described in claim 2, characterized in that, The length of the first clamping plate is less than that of the second clamping plate.

4. The battery fixing structure as described in claim 1, characterized in that, The clamping plate has a first end in the horizontal direction, and the clamping plate also has an inner side facing the clamping space; The first ends of the four clamps abut against the inner sides of the adjacent clamps in sequence.

5. The battery fixing structure as described in claim 1, characterized in that, The fasteners include a first fastener that fixes two adjacent clamps together, and a second fastener that fixes the clamps together and the sidewall of the receiving cavity together.

6. The battery fixing structure as described in claim 5, characterized in that, The fastener includes a first connecting part and a second connecting part, which are bent and both have through holes for screws to pass through.

7. The battery fixing structure as described in claim 5, characterized in that, The upper ends of the four clamping plates are all higher than the battery pack, so as to enclose and form an empty space that connects the clamping space; The first fastener is disposed within the empty space.

8. The battery fixing structure as described in claim 1, characterized in that, The battery pack includes multiple battery cells, and heat insulation plates are provided between each battery cell.

9. The battery fixing structure as described in claim 1, characterized in that, The space between each clamp and the sidewall of the receiving cavity is filled with a phase change material.

10. The battery fixing structure as described in claim 9, characterized in that, The box includes a cover plate and a main body, the main body having the receiving cavity, and the cover plate covering the main body; The upper ends of the four clamps are in contact with the inner side of the cover plate.

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