Battery box
By arranging traction parts on the inner surfaces of the battery box body and box cover, the problem of expansion and deformation of the box body and box cover in immersion cooling thermal management is solved, and the sealing and safety of the battery box are improved.
Patent Information
- Application Number
- CN202422333102.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-09-24
AI Technical Summary
In the immersion cooling thermal management of power batteries, the box body and cover are prone to outward expansion and deformation, resulting in reduced sealing performance and affecting the safety of the battery box.
By arranging traction pieces on the inner surfaces of the box body and the box cover, the traction pieces are alternately connected to the connecting pieces of the box body and the box cover, thereby preventing the box body and the box cover from deforming outward, thereby ensuring the sealing performance.
It effectively prevents the box body and cover from expanding and deforming outward, improves the sealing and safety of the battery box, and reduces the risk of leakage.
Smart Images
Figure CN223451042U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field especially relates to a battery box. BACKGROUND
[0002] As the core component of electric vehicles, power batteries are an important part of China's new energy vehicle industry chain. Among them, the thermal management of power batteries is one of the problems that are concerned.
[0003] Among various thermal management methods, immersion cooling thermal management often faces greater challenges. Under the immersion cooling scheme, the box body and the box cover will be subjected to great pressure and are prone to outward expansion and deformation, resulting in a decrease in the sealing performance of the connection between the box body and the box cover, and affecting the safety performance of the power battery. SUMMARY
[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a battery box, which solves the problem of easy outward expansion and deformation of the box body and the box cover, and improves the sealing performance and safety of the battery box of the power battery.
[0005] The purpose of the utility model is achieved by the following technical solutions:
[0006] A battery box comprises a box body, a box cover and a traction member. The box cover is arranged on the box body, and the traction member connects the inner surface of the box body and the inner surface of the box cover to prevent the box body and the box cover from deforming outwardly.
[0007] In an embodiment, the box body is a hollow cavity structure with an upward opening, the box cover is arranged on the top of the box body, and the traction member connects the bottom surface of the box cover and the inner top surface of the box body.
[0008] In an embodiment, the inner surface of the box body and the inner surface of the box cover are each provided with a set of penetrating members, the set of penetrating members comprises a plurality of penetrating members, and the traction member is alternately penetrated in the penetrating members on the box body and the box cover.
[0009] In an embodiment, the traction member is n, the set of penetrating members on the box body and the box cover is n respectively, one traction member is alternately penetrated in the penetrating members of one set of penetrating members of the box body and one set of penetrating members of the box cover, and n is a positive integer greater than 1.
[0010] In an embodiment, the box body is a hollow cavity structure with an upward opening, the box cover is arranged on the top of the box body, the penetrating members are arranged on the inner top surface of the box body and the bottom surface of the box cover, and the projections of two penetrating members alternately penetrated by the traction member on the horizontal plane are staggered.
[0011] In an embodiment, the puller comprises a closed loop through which the traction member passes.
[0012] In an embodiment, one end of the traction member is fixed to the inner surface of the battery box and the other end penetrates the battery box upward and is fixed to the outer surface of the battery box.
[0013] In an embodiment, one end of the traction member is fixed to the inner surface of the battery box and the other end penetrates the battery box upward and is fixed to the outer surface of the battery box.
[0014] In an embodiment, the battery box is provided with a sealing member surrounding the traction member at the penetration of the traction member.
[0015] In an embodiment, the end of the traction member is provided with a first connecting part, the box body and / or the box cover is provided with a second connecting part, and the first connecting part and the second connecting part are buckled.
[0016] In an embodiment, the first connecting part is a disc, the second connecting part comprises a plurality of clamping columns arranged in an annular array, each clamping column is provided with a clamping groove, and the clamping grooves of the clamping columns enclose an annular groove structure for clamping the disc.
[0017] In an embodiment, the traction member is a metal wire.
[0018] The utility model has the advantages that the inner surface of the box body and the inner surface of the box cover are connected through the traction member, and under the action of the traction member, the box body or the box cover can be prevented from deforming outwardly, the box body and the box cover can be prevented from expanding outwardly and deforming to affect the sealing performance of the connection between the box body and the box cover, the risk of liquid leakage is reduced, and the safety performance is improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can be obtained without creative labor on the basis of these drawings.
[0020] Figure 1 It is the battery box disassembly schematic view of the embodiment of the utility model;
[0021] Figure 2 It is Figure 1 The local enlarged view of region A in it;
[0022] Figure 3 It is Figure 1 The local enlarged view of region B in it;
[0023] Figure 4 It isFigure 1 is a partial enlarged view of region C in
[0024] Figure 5 is Figure 1 is a perspective view of the assembled partial battery box in
[0025] Figure 6 is Figure 5 is a partial enlarged view of region E in
[0026] Figure 7 is Figure 5 is a partial enlarged view of region F in
[0027] Figure 8 is Figure 5 is a perspective view without battery
[0028] Figure 9 is Figure 5 is a front view of
[0029] Figure 10 is Figure 5 is a top view of
[0030] Figure 11 is a front view of the bottom plate of the box
[0031] Figure 12 is a right view of the bottom plate of the box
[0032] Figure 13 is a top view of the bottom plate of the box
[0033] Figure 14 is a front view of the box cover
[0034] Figure 15 is a left view of the box cover
[0035] Figure 16 is a top view of the box cover
[0036] Figure 17 is Figure 14 is a partial enlarged view of region D in
[0037] In the figure: 1, box; 11, bottom plate; 12, access liquid interface; 13, infusion tube; 14, spray tube; 15, side plate; 2, box cover; 3, traction piece; 4, set of penetrating pieces; 41, penetrating piece; 411, arched strip; 412, fixing seat; 5, first connecting part; 6, second connecting part; 61, clamping column; 611, clamping groove; 612, ring groove structure; 7, sealing piece; 8, battery. DETAILED DESCRIPTION
[0038] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.
[0039] In the description of this utility model, unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.
[0040] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.
[0041] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.
[0042] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.
[0043] The utility model provides a battery box, such as Figures 1 to 17 As shown, it includes a box body 1, a box cover 2 and a traction member 3. The box cover 2 is installed on the box body 1, and the traction member 3 connects the inner surface of the box body 1 and the inner surface of the box cover 2 to prevent the box body 1 and the box cover 2 from deforming into the shape of the battery box. In this embodiment, the inner surface of the box body 1 and the inner surface of the box cover 2 are connected by the traction member 3. Under the action of the traction member 3, the box body 1 or the box cover 2 can be prevented from deforming into the shape of the battery box, and the box body 1 and the box cover 2 can be prevented from expanding and deforming outward, thereby affecting the sealing performance of the connection between the box body 1 and the box cover 2, reducing the risk of leakage and improving safety performance. Specifically, the box body 1 is a hollow cavity structure with one end open. The battery 8 is installed in the cavity of the box body 1, and the box cover 2 is installed on the open side of the box body 1.
[0044] As an implementation method, Figure 1 and Figures 5 to 9As shown, the box body 1 is an open upward hollow cavity structure, the box cover 2 is covered on the top of the box body 1, and the traction member 3 is connected to the bottom surface of the box cover 2 and the inner top surface of the box body 1. Among them, the box body 1 is a cuboid structure, including a bottom plate 11 and a side plate 15 connected with the bottom plate 11, the bottom plate 11 and the side plate 15 form an open upward cavity structure, the cavity of the box body 1 can contain cooling liquid or phase change liquid to cool the battery in the cavity, the box cover 2 is covered on the top of the open upward box body 1, thereby the connection between the box cover 2 and the box body 1 is higher, which is conducive to preventing the cooling liquid or phase change liquid from overflowing; correspondingly, the box cover 2 is easy to deform upward, and the bottom plate 11 of the box body 1 is easy to deform downward, and the embodiment can effectively prevent the box body 1 and the box cover 2 from deforming outward in the vertical direction; specifically, the inner top surface of the box body 1 is the top surface of the bottom plate 11 of the box body 1.
[0045] As an embodiment, as shown in Figures 1 to 17 As shown, the inner surface of the box body 1 and the inner surface of the box cover 2 are both provided with a set of penetrating members 4, the set of penetrating members 4 includes a plurality of penetrating members 41, and the traction member 3 is alternately penetrated in the penetrating members 41 on the box body 1 and the box cover 2. The penetration specifically refers to that the traction member 3 penetrates through the penetrating member 41 to realize the penetrating connection between the traction member 3 and the penetrating member 41. Among them, the traction member 3 is alternately penetrated between the penetrating members 41 in the set of penetrating members 4 of the box body 1 and the penetrating members 41 in the set of penetrating members 4 of the box cover 2, so that the adjacent two penetrating members 41 through by the traction member 3 are not simultaneously located on the box body 1 or the box cover 2, which can improve the traction strength. Specifically, the box body 1 is a hollow cavity structure with one end open, the box cover 2 is covered on the open side of the box body 1, the inner surface of the box body 1 refers to the surface of the box body 1 facing the cavity thereof, and the inner surface of the box cover 2 refers to the surface of the box cover 2 facing the cavity of the box body 1.
[0046] As an embodiment, the traction member 3 is n, the set of penetrating members 4 on the box body 1 and the box cover 2 is n respectively, one traction member 3 is alternately penetrated in the penetrating members 41 of one set of penetrating members 4 of the box body 1 and the penetrating members 41 of one set of penetrating members 4 of the box cover 2; wherein n is a positive integer greater than 1. Specifically, as shown in Figures 1 to 17As shown, three traction members 3 are arranged in the battery box, the battery box is a cuboid structure, the battery box has a length direction L and a width direction W, along the width direction W, the groups of penetrating members 4 on the box body 1 and the box cover 2 correspond to three groups respectively, the three traction members 3 are arranged along the width direction W, one traction member 3 is sequentially and alternately penetrated into the penetrating members 41 of one corresponding group of penetrating members 4 on the box body 1 and the penetrating members 41 of one corresponding group of penetrating members 4 on the box cover 2 along the length direction L; n can be determined according to the size of the battery box to determine the appropriate number, improve the traction strength, and ensure the strength of the battery box. Of course, the traction member 3 and the corresponding group of penetrating members 4 can also be arranged and penetrated in other forms, and the traction member 3 can also be penetrated along the outer periphery of the cavity of the battery box to form a ring; the penetrating members 41 are arranged according to the batteries 8 in the box body 1 to optimize the space utilization and avoid interference.
[0047] As an embodiment, as shown in Figure 1 and Figure 5 , the box body 1 is a hollow cavity structure with an opening upward, the box cover 2 is covered on the top of the box body 1, the penetrating members 41 are arranged on the inner top surface of the box body 1 and the bottom surface of the box cover 2, and the projections of the two penetrating members 41 sequentially penetrated by the traction member 3 on the horizontal plane are staggered; under the condition of ensuring the traction strength, the length of the traction member 3 is optimized, which is beneficial to save materials and light weight.
[0048] As an embodiment, as shown in Figure 1 and Figure 4 , the penetrating member 41 comprises a closed ring for the traction member 3 to pass through, which is beneficial to prevent the traction member 3 from falling off. Specifically, the penetrating member 41 comprises an arch-shaped strip 411 and a fixing seat 412, the fixing seat 412 is fixed to the corresponding box body 1 or box cover 2, the two ends of the arch-shaped strip 411 are connected to the side of the fixing seat 412 away from the corresponding box body 1 or box cover 2, the middle part of the arch-shaped strip 411 is arched away from the fixing seat 412, and the closed ring is formed by the arch-shaped strip 411 and the fixing seat 412; the penetrating member 41 can comprise a plurality of arch-shaped strips 411, the end of each arch-shaped strip 411 is connected to the fixing seat 412, and each arch-shaped strip 411 is crossed and connected at the arched part.
[0049] As an embodiment, as shown in Figures 5 to 10 , one end of the traction member 3 is fixed to the inside of the battery box, and the other end is fixed to the outside of the battery box. In order to improve the sealing performance, the two ends of the traction member 3 are preferably fixed to the inside of the battery box, so as to prevent the situation that one end is fixed to the outside of the battery box and needs to be penetrated out of the battery box, thereby affecting the sealing performance of the battery box; but at least one end of the traction member 3 needs to be fixed to the outside of the battery box, so as to pull and fix the traction member 3 outside the battery box after the box cover 2 is installed on the box body 1, which takes into account the operation convenience and the sealing performance.
[0050] As an embodiment, as shown in Figures 5 to 10As shown in the drawings, one end of the traction member 3 is fixed to the inner surface (the top surface of the bottom plate 11) of the battery box, and the other end penetrates the battery box upward and is fixed to the outer surface (specifically, penetrates the box cover 2 upward and is fixed to the top surface of the box cover 2) of the battery box. In this way, the part of the traction member 3 that penetrates the battery box is located at the top of the battery box, which is conducive to preventing the cooling liquid or phase change liquid from overflowing.
[0051] As an embodiment, as shown in the drawings, Figure 9 , Figure 14 and Figure 17 , the battery box is provided with a sealing member 7 around the traction member 3 at the penetration position of the traction member 3 (specifically, on the box cover 2), which improves the sealing performance and reduces the possibility of cooling liquid or phase change liquid overflowing. Among them, the sealing member 7 can be selected as a rubber sealing ring.
[0052] As an embodiment, as shown in the drawings, Figures 1 to 3 , the end of the traction member 3 is provided with a first connecting part 5, and the box body 1 and / or the box cover 2 is provided with a second connecting part 6 for fixing the end of the traction member 3, and the first connecting part 5 and the second connecting part 6 are buckled. Specifically, the traction member 3 includes two ends, one end is fixed to the inner surface of the battery box (specifically, the inner bottom surface of the box body 1, that is, the top surface of the bottom plate 11), and the other end is fixed to the outer surface of the battery box (specifically, the top surface of the box cover 2); the ends of the traction member 3 are fixed to the battery box by buckling, which is convenient and fast. Among them, as shown in the drawings, Figure 5 and Figure 6 , one end of the traction member 3 penetrates the box cover 2 upward and is fixed to the top surface of the box cover 2, and the distance between the second connecting part 6 on the box cover 2 and the sealing member 7 is set according to the size of the battery box, so as to facilitate the penetration and tight fixation of the traction member 3.
[0053] As an embodiment, the first connecting part 5 and the second connecting part 6 can also be connected in other forms, such as screwing (both the first connecting part 5 and the second connecting part 6 are provided with threaded holes, and the first connecting part 5 and the second connecting part 6 are connected by bolts), welding (the first connecting part 5 and the second connecting part 6 are made of metal that can be welded), etc.
[0054] As an embodiment, as shown in the drawings, Figures 1 to 3 and Figure 5As shown, the first connecting part 5 is a disc, and the second connecting part 6 comprises a plurality of clamping columns 61 arranged in an annular array, each clamping column 61 is provided with a clamping groove 611, and the clamping grooves 611 of the clamping columns 61 enclose an annular groove structure 612 for clamping the disc. The disc can be made of rubber with a certain deformation capacity, and the clamping grooves 611 of the plurality of small clamping columns 61 enclose an annular groove structure 612, which is more convenient to process than a large clamping column with an annular groove in the middle, and the hardness of the small clamping column 61 can be smaller than that of the large clamping column, which is beneficial to clamping the disc into the annular groove structure 612. When the discs at both ends of the traction member 3 are fixed, the traction member 3 is in a taut state. Further, the end of the clamping column 61 away from the surface of the battery box where it is fixed can be chamfered to facilitate clamping of the disc into the clamping groove 611.
[0055] As an embodiment, the traction member 3 is a metal wire; the metal wire has good flexibility and toughness, is convenient to pass through and prevents breakage.
[0056] As an embodiment, as shown in the drawings, Figures 1 to 10 As shown, the box body 1 is provided with an inlet and outlet liquid interface 12 and a liquid infusion tube 13 communicating with the inlet and outlet liquid interface 12, the side plate 15 of the box body 1 is provided with a flow channel (not shown), the liquid infusion tube 13 communicates with the flow channel of the side plate 15, the bottom plate 11 is provided with a flow channel (not shown) communicating with the flow channel of the side plate 15, and the cavity of the box body 1 is provided with a spray pipe 14 communicating with the flow channel of the bottom plate 11. Specifically, the inlet and outlet of the cooling liquid into the cavity of the box body 1 is controlled through the inlet and outlet liquid interface 12, the stability of the operation of the battery 8 is improved, and the possibility of thermal runaway is reduced.
[0057] As an embodiment, the phase change liquid can also be contained in the box body 1.
[0058] As an embodiment, at least one end of the traction member 3 is not connected with the disc and passes through the box cover 2 through the end not connected with the disc, so that the sealing member 7 on the box cover 2 can have a smaller opening for sealing.
[0059] As an embodiment, during assembly of the battery box, the traction member 3 can first pass through the sealing member 7, then the ends are connected with the discs, then the traction member 3 passes through the corresponding passing member 41 and is fixed in the battery box, then the box cover 2 is covered on the box body 1 where the battery 8 has been placed, and then the other end of the traction member 3 is fixed outside the battery box.
[0060] The utility model discloses a traction member 3 connects the inner surface of box body 1 and the inner surface of box cover 2, under the action of the traction member 3, the deformation of the box body 1 or the box cover 2 to the outside of the battery box can be avoided, the expansion deformation of the box body 1 and the box cover 2 to the outside can be avoided, the sealing performance of the connection of the box body 1 and the box cover 2 is affected, the risk of liquid leakage is reduced, and the safety performance is improved.
[0061] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the disclosed technical content without departing from the technical solution of the present application. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application are still within the protection scope of the technical solution of the present application.
Claims
1. A battery box, characterized in that: The battery box comprises a box body (1), a box cover (2) and a traction member (3), wherein the box cover (2) is arranged on the box body (1), and the traction member (3) connects the inner surface of the box body (1) and the inner surface of the box cover (2) to prevent the box body (1) and the box cover (2) from deforming toward the outer shape of the battery box.
2. The battery box according to claim 1, wherein: The box body (1) is a hollow cavity structure with an opening facing upward, the box cover (2) is arranged on the top of the box body (1), and the traction member (3) connects the bottom surface of the box cover (2) and the inner top surface of the box body (1).
3. The battery box according to claim 1, wherein: The inner surface of the box body (1) and the inner surface of the box cover (2) are both provided with a connecting piece group (4), the connecting piece group (4) comprising a plurality of connecting pieces (41), and the traction piece (3) is alternately connected to the connecting pieces (41) on the box body (1) and the box cover (2).
4. The battery box according to claim 3, wherein: There are n traction members (3), and there are n connecting member groups (4) on the box body (1) and the box cover (2), respectively. One traction member (3) is correspondingly and alternately connected to a connecting member (41) of a connecting member group (4) of the box body (1) and a connecting member (41) of a connecting member group (4) of the box cover (2); wherein n is a positive integer greater than 1.
5. The battery box according to claim 3, wherein: The box body (1) is a hollow cavity structure with an opening facing upward, the box cover (2) is arranged on the top of the box body (1), the connecting piece (41) is arranged on the inner top surface of the box body (1) and the bottom surface of the box cover (2), and the projections of the two connecting pieces (41) that the traction piece (3) sequentially connects are staggered on the horizontal plane.
6. The battery box according to claim 3, wherein: The connecting piece (41) comprises a closed ring for the traction piece (3) to pass through.
7. The battery box according to claim 1, wherein: One end of the traction member (3) is fixed to the inside of the battery box, and the other end is fixed to the outside of the battery box.
8. The battery box according to claim 7, wherein: One end of the traction member (3) is fixed to the inner surface of the battery box, and the other end passes through the battery box upward and is fixed to the outer surface of the battery box.
9. The battery box according to claim 8, wherein: The battery box is provided with a sealing member (7) surrounding the traction member (3) at a penetration point of the traction member (3).
10. The battery box according to claim 1, wherein: The end of the traction member (3) is provided with a first connecting portion (5), the box body (1) and / or the box cover (2) is provided with a second connecting portion (6), and the first connecting portion (5) and the second connecting portion (6) are buckled.
11. The battery box according to claim 10, wherein: The first connecting portion (5) is a circular disc, and the second connecting portion (6) comprises a plurality of clamping columns (61) arranged in a circular array, each clamping column (61) being provided with a clamping groove (611), and the clamping groove (611) of each clamping column (61) encloses an annular groove structure (612) for clamping the circular disc.
12. The battery box according to claim 1, wherein: The traction member (3) is a metal wire.