Battery box body and battery

Abstract

The utility model discloses a battery box body and a battery, the battery box body is used for the battery, the battery box body comprises a box body and an inner partition plate, the box body comprises a plurality of side plates connected end to end and a bottom plate connected to the bottoms of the plurality of side plates; the multiple inner partition plates are all located in the box body and connected to the bottom plate, the multiple inner partition plates and the multiple side plates are in one-to-one correspondence and are spaced, the multiple inner partition plates are connected end to end to form a containing cavity, and the battery module is located in the containing cavity; wherein at least one side plate is provided with first heat dissipation holes, at least one inner partition plate is provided with second heat dissipation holes, and the first heat dissipation holes and the second heat dissipation holes are arranged in a staggered mode. According to the battery box body disclosed by the utility model, the first heat dissipation holes and the second heat dissipation holes which are distributed in the staggered manner are respectively formed in the side plates and the inner partition plate of the box body, and hot air in the accommodating cavity can exchange heat with external cold air, so that the air-cooling heat dissipation efficiency of a battery is improved; and impurities in the external environment are not easy to enter the accommodating cavity through the second heat dissipation holes.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially is related to a battery box and battery. BACKGROUND

[0002] In the related art, the battery generates heat during use, and the heat is dissipated by natural air cooling or liquid cooling. The natural air cooling is poor due to the obstruction of the battery box. The liquid cooling is high in cost and prone to short circuit caused by liquid flowing into the battery. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, one purpose of the utility model is to provide a battery box. The first and second heat dissipation holes are arranged on the side plates and the inner partitions of the box body, respectively, to realize heat exchange between the hot air in the containing cavity and the cold air outside, and improve the air cooling heat dissipation efficiency of the battery.

[0004] The utility model further provides a battery with the above-mentioned battery box.

[0005] According to the battery box of the first aspect of the utility model, the battery includes a battery module, and the battery box includes a box body, the box body includes a plurality of side plates connected head to tail and a bottom plate connected to the bottom of the plurality of side plates; a plurality of inner partitions are provided, the plurality of inner partitions are located in the box body and connected to the bottom plate, the plurality of inner partitions correspond to the plurality of side plates one by one and are spaced apart, the plurality of inner partitions are connected head to tail to form a containing cavity, and the battery module is located in the containing cavity; at least one of the side plates is provided with a first heat dissipation hole, at least one of the inner partitions is provided with a second heat dissipation hole, and the first heat dissipation hole and the second heat dissipation hole are arranged in a staggered manner.

[0006] According to the battery box of the utility model, the inner partitions are arranged in the box body, and the first and second heat dissipation holes are arranged on the side plates and the inner partitions of the box body, respectively. The first and second heat dissipation holes can realize heat exchange between the hot air in the containing cavity and the cold air outside, thereby improving the air cooling heat dissipation efficiency of the battery. The first and second heat dissipation holes are arranged in a staggered manner, so that impurities in the external environment are less likely to enter the containing cavity through the second heat dissipation hole.

[0007] According to some embodiments of the utility model, the battery box further includes a buffer member, the plurality of inner partitions and the plurality of side plates are spaced apart to form a cavity, and the buffer member is located in the cavity.

[0008] According to some embodiments of the utility model, the buffer member includes buffer foam.

[0009] According to some embodiments of the present application, the buffer foam is provided with a plurality of through holes, and the through holes are arranged in a staggered manner with the first and second heat dissipation holes.

[0010] According to some embodiments of the present application, the first heat dissipation hole is provided with a plurality of first heat dissipation holes arranged in a row-column manner on the side plate, and the second heat dissipation hole is provided with a plurality of second heat dissipation holes arranged in a row-column manner on the inner partition plate.

[0011] According to some embodiments of the present application, the first heat dissipation hole includes at least one of a polygonal hole, a circular hole and a strip-shaped hole, and the second heat dissipation hole includes at least one of a polygonal hole, a circular hole and a strip-shaped hole.

[0012] According to some embodiments of the present application, the first heat dissipation hole is a circular hole, the diameter of the first heat dissipation hole is D1, and 7mm≤D1≤10mm is satisfied, the distance between adjacent two first heat dissipation holes is L1, and 15mm≤L1≤20mm is satisfied; the second heat dissipation hole is a circular hole, the diameter of the second heat dissipation hole is D2, and 7mm≤D2≤10mm is satisfied, and the distance between adjacent two second heat dissipation holes is L2, and 15mm≤L2≤20mm is satisfied.

[0013] According to some embodiments of the present application, the distance between each side plate and the corresponding inner partition plate is A, and 100mm≤A≤150mm is satisfied.

[0014] According to some embodiments of the present application, the wall thickness of each inner partition plate is B, and 15mm≤B≤25mm is satisfied.

[0015] According to the battery of the second aspect of the present application, the battery box of the first aspect of the present application is included.

[0016] According to the battery of the present application, the heat exchange between the hot air in the containing cavity and the cold air outside can be realized through the first and second heat dissipation holes, and the heat dissipation efficiency of the battery is improved.

[0017] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a top view of the battery box according to some embodiments of the present application.

[0020] Figure 2 is Figure 1 a side view of the battery box.

[0021] Reference signs:

[0022] 10, battery box;

[0023] 1, box; 11, side plate; 111, first heat dissipation hole; 12, bottom plate; 13, accommodating cavity;

[0024] 2, inner partition plate; 21, cavity;

[0025] 3, buffer. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] In the description of the present application, it should be noted that, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] The battery box 10 according to the embodiments of the present application is described below with reference to Figures 1-2 the drawings.

[0030] According to the battery box 10 of the first aspect of the utility model, the battery box 10 is used for battery, and the battery includes battery module, the battery box 10 includes box 1 and inner partition 2, box 1 includes multiple side plates 11 and bottom plate 12, multiple side plates 11 are sequentially connected head to tail, and bottom plate 12 is connected to the bottom of multiple sequentially connected head to tail side plates 11. Multiple inner partitions 2 are arranged, multiple inner partitions 2 are located in box 1, and the bottom of multiple inner partitions 2 is connected to bottom plate 12, multiple inner partitions 2 correspond to multiple side plates 11 one by one and are spaced apart, multiple inner partitions 2 are sequentially connected to form containing cavity 13, and battery module is located in containing cavity 13, the battery box 10 is used for placing battery module, and the battery box 10 can protect battery module.

[0031] For example, side plate 11 is provided with four, and corresponding, inner partition 2 is provided with four.

[0032] At least one side plate 11 is provided with first heat dissipation hole 111, which can be provided with first heat dissipation hole 111 on one side plate 11, can be provided with first heat dissipation hole 111 on two side plates 11, can be provided with first heat dissipation hole 111 on three side plates 11, and can be provided with first heat dissipation hole 111 on all side plates 11. At least one inner partition 2 is provided with second heat dissipation hole, which can be provided with second heat dissipation hole on one inner partition 2, can be provided with second heat dissipation hole on two inner partitions 2, can be provided with second heat dissipation hole on three inner partitions 2, and can be provided with second heat dissipation hole on all inner partitions 2.

[0033] First heat dissipation hole 111 and second heat dissipation hole are arranged in a staggered manner, when one of the side plates 11 is provided with first heat dissipation hole 111, three inner partitions 2 not corresponding to the side plate 11 can be provided with second heat dissipation hole; when two side plates 11 are provided with first heat dissipation hole 111, two inner partitions 2 not corresponding to the two side plates 11 can be provided with second heat dissipation hole; when three side plates 11 are provided with first heat dissipation hole 111, one inner partition 2 not corresponding to the three side plates 11 can be provided with second heat dissipation hole, so as to realize the staggered arrangement of first heat dissipation hole 111 and second heat dissipation hole. When all side plates 11 are provided with first heat dissipation hole 111, second heat dissipation hole can be provided on one of the inner partitions 2, and second heat dissipation hole is arranged in a staggered manner with first heat dissipation hole 111.

[0034] When the temperature of the battery module rises, the hot air in the accommodating cavity 13 can be discharged to the space between the inner partition plate 2 and the side plate 11 through the first heat dissipation hole 111 and then discharged to the external environment through the first heat dissipation hole 111; at the same time, the cold air in the external environment can enter the box body 1 through the first heat dissipation hole 111 and then enter the accommodating cavity 13 through the second heat dissipation hole, so as to realize heat exchange between the hot air in the accommodating cavity 13 and the cold air in the external environment, thereby improving the heat dissipation efficiency of the battery module. By arranging the first heat dissipation hole 111 and the second heat dissipation hole on the battery box body 10, the efficiency of air cooling heat dissipation of the battery can be improved without increasing the cost of the battery box body 10.

[0035] The first heat dissipation hole 111 and the second heat dissipation hole are arranged in a staggered manner, and impurities in the external environment are not easy to enter the accommodating cavity 13 through the second heat dissipation hole.

[0036] According to the battery box body 10 of the embodiment of the present application, the inner partition plate 2 is arranged in the box body 1, and the first heat dissipation hole 111 and the second heat dissipation hole are arranged on the side plate 11 and the inner partition plate 2 of the box body 1, respectively. The first heat dissipation hole 111 and the second heat dissipation hole can realize heat exchange between the hot air in the accommodating cavity 13 and the cold air in the external environment, thereby improving the air cooling heat dissipation efficiency of the battery. Moreover, the first heat dissipation hole 111 and the second heat dissipation hole are arranged in a staggered manner, and impurities in the external environment are not easy to enter the accommodating cavity 13 through the second heat dissipation hole.

[0037] According to some embodiments of the present application, with reference to Figure 1 The battery box body 10 further comprises a buffer member 3, the plurality of inner partition plates 2 and the plurality of side plates 11 are arranged at intervals to form cavities 21, and the buffer member 3 is located in the cavities 21. The buffer member 3 can further block impurities in the external environment from entering the accommodating cavity 13 through the second heat dissipation hole. When the battery box body 10 is subjected to external impact, the buffer member 3 can absorb or buffer the impact force received by the battery box body 10, thereby reducing the influence of vibration and impact on the battery module. Filling the buffer member 3 in the cavities 21 can also support the inner partition plate 2, avoiding deformation of the inner partition plate 2 when the battery box body 10 is subjected to impact.

[0038] For example, the buffer member 3 can comprise: buffer foam, natural rubber, etc.

[0039] According to some embodiments of the present application, with reference to Figure 1 The buffer member 3 comprises buffer foam, which has good shock absorption performance, and also has the advantages of light weight and low cost; the buffer foam has a large number of tiny pores, which can be compressed when the buffer foam is subjected to external impact, thereby effectively absorbing and dispersing energy and reducing the influence of vibration and impact on the battery box body 10; these tiny pores can also play a role in heat dissipation and can be used to communicate the first heat dissipation hole 111 and the second heat dissipation hole.

[0040] According to some embodiments of the present application, referring to Figure 1 The buffer foam is provided with a plurality of through holes, which can further increase the flow area of the airflow, thereby increasing the flow rate of the airflow, and further improving the heat dissipation efficiency of the battery module. In addition to the plurality of micro pores possessed by the buffer foam itself, the buffer foam is also provided with a plurality of through holes, which are arranged in a staggered manner with the first heat dissipation holes 111 and the second heat dissipation holes. Impurities in the external environment are not easy to enter the accommodating cavity 13 through the second heat dissipation holes.

[0041] According to some embodiments of the present application, referring to Figure 2 The first heat dissipation holes 111 are arranged in a row-column type on the side plate 11, and the second heat dissipation holes are arranged in a row-column type on the inner partition plate 2. The plurality of first heat dissipation holes 111 and the plurality of second heat dissipation holes can increase the flow area of the airflow, thereby increasing the flow rate of the airflow, and further improving the heat dissipation efficiency of the battery module. The row-column type arrangement can also increase the structural strength of the side plate 11 and the inner partition plate 2 of the box body 1.

[0042] According to some embodiments of the present application, referring to Figure 2 The first heat dissipation holes 111 include at least one of a polygonal hole, a circular hole, and a strip-shaped hole. The first heat dissipation holes 111 can all be polygonal holes, which can include triangular holes, quadrilateral holes, or hexagonal holes. The first heat dissipation holes 111 can also all be circular holes or strip-shaped holes. The first heat dissipation holes 111 can also be a combination of two of the polygonal hole, the circular hole, and the strip-shaped hole, and the shape of the first heat dissipation holes 111 can be designed according to the flow efficiency of the airflow.

[0043] The second heat dissipation holes include at least one of a polygonal hole, a circular hole, and a strip-shaped hole. The second heat dissipation holes can all be polygonal holes, which can include triangular holes, quadrilateral holes, or hexagonal holes. The second heat dissipation holes can also all be circular holes or strip-shaped holes. The second heat dissipation holes can also be a combination of two of the polygonal hole, the circular hole, and the strip-shaped hole, and the shape of the first heat dissipation holes 111 can be designed according to the flow efficiency of the airflow.

[0044] According to some embodiments of the present application, referring to Figure 2 The first heat dissipation holes 111 are circular holes. The first heat dissipation holes 111 are processed into circular holes, which can make the processing method of the first heat dissipation holes 111 simple and have higher structural strength. The diameter of the first heat dissipation holes 111 is D1, which satisfies 7mm≤D1≤10mm. The distance between adjacent two first heat dissipation holes 111 is L1, which satisfies 15mm≤L1≤20mm. The arrangement of the first heat dissipation holes 111 satisfies the above range, which can not only satisfy the heat dissipation efficiency of the first heat dissipation holes 111, but also satisfy the structural strength of the side plate 11.

[0045] For example, the diameter D1 of the first heat dissipation hole 111 can be 7mm, 8mm, 9mm or 10mm, etc.; the distance L1 between two adjacent first heat dissipation holes 111 can be 15mm, 17mm, 19mm or 20mm, etc.

[0046] The second heat dissipation hole is a circular hole. Machining the second heat dissipation hole as a circular hole simplifies the manufacturing process and increases structural strength. The diameter of the second heat dissipation hole is D2, satisfying: 7mm ≤ D2 ≤ 10mm. The distance between two adjacent second heat dissipation holes is L2, satisfying: 15mm ≤ L2 ≤ 20mm. The arrangement of the second heat dissipation holes within these ranges not only ensures efficient heat dissipation but also satisfies the structural strength requirements of the inner partition 2.

[0047] For example, the diameter D1 of the second heat dissipation hole can be 7mm, 8mm, 9mm or 10mm, etc.; the distance L1 between two adjacent second heat dissipation holes can be 15mm, 17mm, 19mm or 20mm, etc.

[0048] In a specific example, the battery is used in a vehicle. The distance between the first heat dissipation hole 111 closest to the base plate 12 and the base plate 12 is greater than 50mm. That is, the first heat dissipation hole 111 is a certain distance from the base plate 12. When the vehicle is in motion, the probability of impurities in the external environment entering the cavity 21 through the first heat dissipation hole 111 can be further reduced.

[0049] According to some embodiments of this utility model, refer to Figure 1 The distance between each side plate 11 and the corresponding inner partition 2 is A, which satisfies: 100mm≤A≤150mm. The cavity 21 will not occupy too much space inside the box 1, and can also make the buffer 3 more effective.

[0050] For example, the distance between each side plate 11 and the corresponding inner partition 2 can be 100mm, 120mm, 130mm or 150mm, etc.

[0051] According to some embodiments of this utility model, refer to Figure 1 Each inner partition 2 has a wall thickness of B, satisfying the condition: 15mm ≤ B ≤ 25mm. This ensures that the inner partition 2 does not excessively occupy the space inside the box 1 while maintaining its structural strength. For example, the wall thickness of each inner partition 2 can be 15mm, 18mm, 22mm, or 25mm, etc.

[0052] The battery according to a second aspect embodiment of the present invention includes: the battery housing 10 of the first aspect embodiment of the present invention described above.

[0053] According to the battery of the embodiment of the utility model, the heat exchange between the hot air in the accommodating cavity 13 and the cold air outside can be realized through the first heat dissipation hole 111 and the second heat dissipation hole by setting the above-mentioned battery box 10, and the heat dissipation efficiency of the battery is improved.

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

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

Claims

1. A battery case characterized by comprising: A battery, comprising a battery module, the battery box comprising: a box comprising a plurality of side plates connected head to tail, and a bottom plate connected to the bottom of the plurality of side plates; a plurality of inner partitions, each of which is located in the box and connected to the bottom plate, each of which corresponds to and is spaced apart from the plurality of side plates, and the plurality of inner partitions are connected head to tail to form a containing cavity, and the battery module is located in the containing cavity; wherein at least one of the side plates is provided with a first heat dissipation hole, and at least one of the inner partitions is provided with a second heat dissipation hole, and the first heat dissipation hole and the second heat dissipation hole are arranged in a staggered manner.

2. The battery pack of claim 1, wherein, Further comprising a buffer, the plurality of inner partitions and the plurality of side plates are spaced apart to form a cavity, and the buffer is located in the cavity.

3. The battery pack of claim 2, wherein, The buffer comprises buffer foam.

4. The battery pack of claim 3, wherein The buffer foam is provided with a plurality of through holes, and the through holes are arranged in a staggered manner with the first heat dissipation holes and the second heat dissipation holes.

5. The battery pack of claim 1, wherein, The first heat dissipation hole is provided with a plurality of, and the plurality of first heat dissipation holes are arranged in a row-column type on the side plate; the second heat dissipation hole is provided with a plurality of, and the plurality of second heat dissipation holes are arranged in a row-column type on the inner partition.

6. The battery pack of claim 5, wherein, The first heat dissipation hole comprises at least one of a polygonal hole, a circular hole and a strip-shaped hole; the second heat dissipation hole comprises at least one of a polygonal hole, a circular hole and a strip-shaped hole.

7. The battery pack of claim 5, wherein, The first heat dissipation hole is a circular hole, the diameter of the first heat dissipation hole is D1, which satisfies: 7mm≤D1≤10mm, the distance between adjacent two first heat dissipation holes is L1, which satisfies: 15mm≤L1≤20mm; the second heat dissipation hole is a circular hole, the diameter of the second heat dissipation hole is D2, which satisfies: 7mm≤D2≤10mm, the distance between adjacent two second heat dissipation holes is L2, which satisfies: 15mm≤L2≤20mm.

8. The battery pack of claim 2, wherein, The distance between each side plate and the corresponding inner partition is A, which satisfies: 100mm≤A≤150mm.

9. The battery pack of claim 1, wherein, The wall thickness of each inner partition is B, which satisfies: 15mm≤B≤25mm.

10. A battery, characterized by Comprising: The battery box of any one of claims 1-9.

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