Battery structure

Abstract

The utility model provides a battery structure which comprises a cabin body, an inner cavity of the cabin body is used for accommodating a battery pack, one side of the battery pack is provided with a connecting plate, the connecting plate is used for welding a tab, and a circulation channel is arranged between the connecting plate and the cabin wall of the cabin body; the cover body covers the cabin body to seal the cabin body, a pressure relief opening is formed in the side face of the cover body and used for installing a pressure relief valve, a partition plate extending in the vertical direction is arranged in the cover body and divides an inner cavity of the cover body into a first cavity and a second cavity, the pressure relief opening is communicated with the first cavity, and the second cavity is communicated with the second cavity. The circuit on the top of the battery pack is located in the second cavity, the partition plate abuts against the top of the battery pack, and the partition plate is arranged between the connecting plate and the circuit on the top of the battery pack to isolate the circulation channel from the second cavity so that the circulation channel can communicate with the first cavity. According to the utility model, the problem that the working safety performance of the battery pack in the prior art is relatively low is solved.

Description

Technical Field

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

[0002] With the rapid development of the new energy industry, electric motorcycles have gradually become popular. As the core component of electric motorcycles, the safety performance of battery packs directly affects the promotion and application of electric motorcycles.

[0003] A battery pack consists of multiple battery cells. When a battery cell experiences thermal runaway due to thermal, mechanical, or electrical abuse, it can release large amounts of high-temperature, high-pressure gas from the packaging openings near the battery cell terminals, posing a serious threat to personal safety. A pressure relief valve is typically installed directly above the battery pack. When high-temperature, high-pressure gas accumulates to a certain pressure, it is discharged through the valve to the outside world. This prevents the battery pack from overheating and causing spontaneous combustion, or excessive internal pressure and explosion.

[0004] However, the high-temperature and high-pressure gas inside the battery pack has filled the entire space of the battery pack before it is discharged, causing the battery cells of other battery cells to be heated over a large area, resulting in the rapid spread of thermal runaway of the battery cells, and causing the cables and components on the top of the battery pack to overheat and be damaged, greatly reducing the working safety performance of the battery pack. Utility Model Content

[0005] The main purpose of the present utility model is to provide a battery structure to solve the problem of low working safety performance of battery packs in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a battery structure, including: a cabin, the internal cavity of the cabin is used to accommodate the battery pack, a connecting plate is provided on one side of the battery pack, the connecting plate is used to weld the pole ear, and a flow channel is provided between the connecting plate and the cabin wall of the cabin; a cover body, the cover body is provided on the cabin to close the cabin, a pressure relief port is provided on the side of the cover body, and a partition extending in the vertical direction is provided in the cover body, the partition separates the internal cavity of the cover body to form a first cavity and a second cavity, the pressure relief port and the first cavity are connected, the circuit at the top of the battery pack is located in the second cavity, the partition is abutted against the top of the battery pack, and the partition is provided between the connecting plate and the circuit at the top of the battery pack to isolate the flow channel and the second cavity, so that the flow channel and the first cavity are connected.

[0007] Furthermore, the battery structure also includes two limit plates, which are arranged at intervals along a first preset direction. Along a second preset direction, each limit plate is arranged between the bulkhead and the connecting plate of the cabin, so that the two limit plates, the connecting plate and the bulkhead of the cabin together form a flow channel, and the first preset direction and the second preset direction intersect.

[0008] Furthermore, a first fastening hole is provided on the cover body, and a second fastening hole is provided on the wall of the cabin body, so that a fastener is passed through the first fastening hole and the second fastening hole to fasten the cover body and the cabin body.

[0009] Furthermore, the cabin body includes four bulkheads connected to each other, and the four bulkheads are respectively the first bulkhead, the second bulkhead, the third bulkhead and the fourth bulkhead. The first bulkhead and the third bulkhead are relatively arranged between the second bulkhead and the fourth bulkhead along the second preset direction, and the second bulkhead and the fourth bulkhead are relatively arranged between the first bulkhead and the third bulkhead along the first preset direction. The first bulkhead and the third bulkhead both extend along the first preset direction, and the second bulkhead and the fourth bulkhead both extend along the second preset direction. The first bulkhead, the two limiting plates and the connecting plate together form a circulation channel.

[0010] Furthermore, the battery structure also includes two sealing plates, and the two sides of one of the two sealing plates are respectively abutted against the circumferential side surfaces of the battery pack and the second bulkhead, and the two sides of the other of the two sealing plates are respectively abutted against the circumferential side surfaces of the battery pack and the fourth bulkhead, so that the sealing plates seal the flow channel.

[0011] Furthermore, each limiting plate includes a first plate segment and a second plate segment connected to each other, the first plate segment extends along the second preset direction, the second plate segment extends along the first preset direction, the first end of the first plate segment is connected to the first bulkhead, the second end of the first plate segment is connected to the first end of the second plate segment, and the second plate segment abuts against the connecting plate so that the limiting plate limits the connecting plate.

[0012] Furthermore, the cover body includes an upper cover body and a lower cover body connected to each other, the upper cover body includes a top plate and four first circumferential side plates connected to each other, the projected area of ​​the upper cover body on the horizontal plane is larger than the projected area of ​​the lower cover body on the horizontal plane, so that when the cover body is installed on the cabin body, the ends of the four first circumferential side plates respectively abut against the first bulkhead, the second bulkhead, the third bulkhead and the fourth bulkhead; wherein, a pressure relief port is provided on the first circumferential side plate abutting against the first bulkhead.

[0013] Furthermore, the lower cover body includes four interconnected second circumferential side plates, and the four second circumferential side plates are respectively arranged corresponding to the first bulkhead, the second bulkhead, the third bulkhead and the fourth bulkhead, and each second circumferential side plate is provided with a first fastening hole, and the first bulkhead, the second bulkhead, the third bulkhead and the fourth bulkhead are all provided with a second fastening hole.

[0014] Furthermore, the battery structure also includes a sealing ring, which includes four sealing ring parts that are interconnected. The four sealing ring parts are respectively arranged in one-to-one correspondence with the first bulkhead, the second bulkhead, the third bulkhead and the fourth bulkhead. Each sealing ring part includes a first sealing plate and a second sealing plate. The first sealing plate extends in a vertical direction, and the extension direction of the second sealing plate is arranged perpendicular to the extension direction of the first sealing plate. The first sealing plate is arranged in the middle of the second sealing plate, and each second sealing plate is connected to the corresponding bulkhead. The first sealing plate, the second sealing plate and the corresponding bulkhead of each sealing ring part form a sealing groove, so that when the cover body is covered on the cabin body, the second circumferential side plate corresponding to the bulkhead corresponding to the sealing ring part is passed through the sealing groove, so that the sealing ring seals the cover body.

[0015] Furthermore, the sealing ring also includes two sealing strips, each of which extends in the vertical direction. The two sealing strips are respectively arranged in one-to-one correspondence with the two sealing ring parts corresponding to the second bulkhead and the fourth bulkhead. Each sealing strip is connected to the second sealing plate of the corresponding sealing ring part, so that when the cover body is set on the cabin body, the two side walls of the partition are respectively in contact with the two sealing strips, so that the sealing strips seal the partition.

[0016] By applying the technical solution of the utility model, the battery structure of the utility model includes a cabin and a cover, the cover is provided on the cabin to close the cabin, and a pressure relief port is provided on the side of the cover, which is provided at the top of the cover relative to the pressure relief port, so that high-temperature and high-pressure gas can be prevented from spraying out from the top of the cover, causing the high-temperature and high-pressure gas to impact the passengers above the cover; by providing a flow channel between the connecting plate and the bulkhead of the cabin, the flow channel is connected to the first cavity, and the first cavity is connected to the pressure relief port, so that the high-temperature and high-pressure gas is confined in the flow channel, so that the high-temperature and high-pressure gas is prevented from diffusing into the entire cabin, so that the temperature of the battery pack is prevented from rising sharply, and the battery pack is prevented from thermal spread, and at the same time, the high-temperature and high-pressure gas can quickly enter the first cavity through the flow channel and then flow out through the pressure relief port, so as to avoid the high-temperature and high-pressure gas from accumulating in large quantities inside the cabin and exploding; by isolating the flow channel and the second cavity by a partition, the high-temperature and high-pressure gas in the flow channel can be prevented from overflowing into the second cavity, so that the circuit at the top of the battery pack is prevented from being overheated and damaged, thereby solving the problem of low working safety performance of the battery pack in the prior art and improving the working safety performance of the battery structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 An exploded schematic diagram of an embodiment of a battery structure according to the present utility model is shown;

[0019] Figure 2 A schematic structural diagram of the cabin, limiting plate, battery pack, sealing plate and sealing ring of the battery structure according to the present invention is shown;

[0020] Figure 3 A schematic structural diagram of a battery pack and a sealing plate of a battery structure according to the present invention is shown;

[0021] Figure 4 A schematic structural diagram of the cabin, limiting plate, battery pack and sealing plate of the battery structure according to the present invention is shown;

[0022] Figure 5 A schematic structural diagram of a cover body of a battery structure according to the present invention is shown;

[0023] Figure 6 A structural schematic diagram of an embodiment of a battery structure according to the present utility model is shown.

[0024] The above drawings include the following reference numerals:

[0025] 1. Cabin; 2. Battery pack; 21. Connecting plate; 31. Circulation channel; 4. Cover; 5. Pressure relief port; 6. Pressure relief valve; 7. Line; 32. Partition; 33. First cavity; 34. Second cavity; 35. Limiting plate; 36. First fastening hole; 37. Second fastening hole; 41. First bulkhead; 42. Second bulkhead; 43. Third bulkhead; 44. Fourth bulkhead; 50. Sealing plate; 351. First plate section; 352. Second plate section; 45. Upper cover; 451. First circumferential side plate; 46. Lower cover; 452. Second circumferential side plate; 61. Sealing ring; 62. First sealing plate; 63. Second sealing plate; 64. Sealing strip. DETAILED DESCRIPTION

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0028] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0029] Please refer to Figures 1 to 6 The utility model provides a battery structure, including: a cabin 1, the internal cavity of the cabin 1 is used to accommodate a battery pack 2, a connecting plate 21 is provided on one side of the battery pack 2, the connecting plate 21 is used to weld the pole ear, and a circulation channel 31 is provided between the connecting plate 21 and the bulkhead of the cabin 1; a cover body 4, the cover body 4 is covered on the cabin body 1 to close the cabin body 1, a pressure relief port 5 is provided on the side of the cover body 4, and a partition 32 extending in the vertical direction is provided in the cover body 4, the partition 32 divides the internal cavity of the cover body 4 into a first cavity 33 and a second cavity 34, the pressure relief port 5 and the first cavity 33 are connected, the circuit 7 at the top of the battery pack 2 is located in the second cavity 34, the partition 32 abuts against the top of the battery pack 2, and the partition 32 is provided between the connecting plate 21 and the circuit 7 at the top of the battery pack 2 to isolate the circulation channel 31 and the second cavity 34, so that the circulation channel 31 and the first cavity 33 are connected.

[0030] The battery structure of the present invention includes a cabin 1 and a cover 4. The cover 4 is covered on the cabin 1 to close the cabin 1. By arranging a pressure relief port 5 on the side of the cover 4, which is arranged at the top of the cover 4 relative to the pressure relief port 5, it is possible to prevent high-temperature and high-pressure gas from being ejected from the top of the cover 4, causing the high-temperature and high-pressure gas to impact the passengers above the cover 4; by arranging a flow channel 31 between the connecting plate 21 and the bulkhead of the cabin 1, the flow channel 31 is connected to the first cavity 33, and the first cavity 33 is connected to the pressure relief port 5, so that the high-temperature and high-pressure gas is confined in the flow channel 31, thereby preventing the high-temperature and high-pressure gas from spreading to the entire cabin. 1, preventing the temperature of the battery pack 2 from rising sharply and preventing heat spread in the battery pack 2. At the same time, the high-temperature and high-pressure gas can quickly enter the first cavity 33 through the circulation channel 31 and then flow out through the pressure relief port 5, preventing the high-temperature and high-pressure gas from accumulating in large quantities inside the cabin 1 and causing an explosion; the circulation channel 31 and the second cavity 34 are isolated by the partition 32, which can prevent the high-temperature and high-pressure gas in the circulation channel 31 from overflowing into the second cavity 34, and avoid overheating and damage to the circuit 7 on the top of the battery pack 2, thereby solving the problem of low working safety performance of the battery pack in the prior art and improving the working safety performance of the battery structure.

[0031] Specifically, the battery pack of the electric motorcycle is arranged under the seat. When the pressure relief port 5 is arranged at the top of the cover body 4, high-temperature and high-pressure gas is ejected from the top of the cover body 4, causing the high-temperature and high-pressure gas to impact the passengers above the cover body 4, which can easily cause injuries to the passengers; the pressure relief port 5 is used to install the pressure relief valve 6.

[0032] Specifically, the battery pack 2 is mainly composed of soft-pack batteries, battery holders, and a BMS board.

[0033] In this embodiment, the battery structure also includes two limit plates 35, which are arranged at intervals along the first preset direction. Along the second preset direction, each limit plate 35 is arranged between the bulkhead of the cabin 1 and the connecting plate 21, so that the two limit plates 35, the connecting plate 21 and the bulkhead of the cabin 1 together form a flow channel 31, and the first preset direction and the second preset direction intersect.

[0034] Specifically, the bulkhead of the cabin 1, the two limiting plates 35 and the connecting plate 21 together form a circulation channel 31, which reduces the circulation space of the high-temperature and high-pressure gas in the battery structure, and limits the high-temperature and high-pressure gas in the circulation channel 31, thereby preventing the high-temperature and high-pressure gas from spreading into the entire cabin 1, preventing the temperature of the battery pack 2 from rising sharply, and preventing heat spread in the battery pack 2, so that the high-temperature and high-pressure gas can quickly enter the first cavity 33 through the circulation channel 31, and then the high-temperature and high-pressure gas can quickly flow out through the pressure relief port 5.

[0035] Specifically, the intersection of the first preset direction and the second preset direction includes that the first preset direction and the second preset direction are arranged perpendicularly to each other, and in this embodiment, the perpendicular arrangement may have a certain angle deviation, for example, the perpendicular arrangement is within a range of 90°±5.

[0036] In this embodiment, a first fastening hole 36 is provided on the cover body 4, and a second fastening hole 37 is provided on the wall of the cabin body 1, so that a fastener can be passed through the first fastening hole 36 and the second fastening hole 37 to fasten the cover body 4 and the cabin body 1.

[0037] Specifically, by inserting the fasteners through the first fastening holes 36 and the second fastening holes 37 , the cover 4 and the cabin 1 are fastened together, thereby preventing the cover 4 and the cabin 1 from being separated.

[0038] Optionally, the fastener is a screw.

[0039] In this embodiment, the cabin body 1 includes four bulkheads connected to each other, which are the first bulkhead 41, the second bulkhead 42, the third bulkhead 43 and the fourth bulkhead 44. The first bulkhead 41 and the third bulkhead 43 are relatively arranged between the second bulkhead 42 and the fourth bulkhead 44 along the second preset direction, and the second bulkhead 42 and the fourth bulkhead 44 are relatively arranged between the first bulkhead 41 and the third bulkhead 43 along the first preset direction. The first bulkhead 41 and the third bulkhead 43 both extend along the first preset direction, and the second bulkhead 42 and the fourth bulkhead 44 both extend along the second preset direction. The first bulkhead 41, the two limiting plates 35 and the connecting plate 21 together form a circulation channel 31.

[0040] Specifically, the first bulkhead 41, two limiting plates 35 and the connecting plate 21 together form a circulation channel 31, which reduces the circulation space of the high-temperature and high-pressure gas in the battery structure, and limits the high-temperature and high-pressure gas to the circulation channel 31, thereby preventing the high-temperature and high-pressure gas from spreading into the entire cabin 1, preventing other non-heated battery cells from being heated over a large area, and preventing heat spread in the battery pack 2, so that the high-temperature and high-pressure gas can quickly enter the first cavity 33 through the circulation channel 31, and then the high-temperature and high-pressure gas can quickly flow out through the pressure relief port 5, thereby preventing the air pressure in the cabin 1 from being too high.

[0041] Specifically, the first preset direction is as follows: Figure 2 The x direction shown, the second preset direction is as Figure 2 In the y direction shown, the first preset direction, the second preset direction and the vertical direction are arranged perpendicular to each other.

[0042] In this embodiment, the battery structure also includes two sealing plates 50. The two sides of one of the two sealing plates 50 are respectively abutted against the circumferential side of the battery pack 2 and the second bulkhead 42, and the two sides of the other of the two sealing plates 50 are respectively abutted against the circumferential side of the battery pack 2 and the fourth bulkhead 44, so that the sealing plates 50 seal the circulation channel 31.

[0043] Specifically, the two sides of one of the two sealing plates 50 are respectively in contact with the circumferential side of the battery pack 2 and the second bulkhead 42, so that the sealing plate 50 can seal the gap between the circumferential side of the battery pack 2 and the second bulkhead 42, and the two sides of the other sealing plate 50 of the two sealing plates 50 are respectively in contact with the circumferential side of the battery pack 2 and the fourth bulkhead 44, so that the sealing plate 50 can seal the gap between the circumferential side of the battery pack 2 and the fourth bulkhead 44, thereby preventing high-temperature and high-pressure gas from overflowing from the gap between the circumferential side of the battery pack 2 and the bulkhead, and further preventing high-temperature and high-pressure gas from spreading to the entire cabin 1, preventing other non-heated battery cells from being heated over a large area, and preventing heat spread in the battery pack 2; it can also prevent the circuit 7 at the top of the battery pack 2 from being overheated and damaged.

[0044] Optionally, the sealing plate 50 is made of foam.

[0045] In this embodiment, each limiting plate 35 includes a first plate segment 351 and a second plate segment 352 that are connected to each other. The first plate segment 351 extends along the second preset direction, and the second plate segment 352 extends along the first preset direction. The first end of the first plate segment 351 is connected to the first bulkhead 41, the second end of the first plate segment 351 is connected to the first end of the second plate segment 352, and the second plate segment 352 abuts against the connecting plate 21 so that the limiting plate 35 limits the connecting plate 21.

[0046] Specifically, the limit plate 35 is used to limit the connecting plate 21 to prevent the connecting plate 21 from moving along the second preset direction, resulting in a smaller volume of the circulation channel 31, resulting in a smaller flow of high-temperature and high-pressure gas in the circulation channel 31, resulting in a large amount of high-temperature and high-pressure gas being unable to quickly flow into the first cavity 33 and then leave from the pressure relief port 5, resulting in excessive pressure and temperature in the cabin 1, and causing the battery structure to be unable to work safely.

[0047] In this embodiment, the cover body includes an upper cover body 45 and a lower cover body 46 that are interconnected. The upper cover body 45 includes a top plate and four interconnected first circumferential side plates 451. The projected area of ​​the upper cover body 45 on the horizontal plane is larger than the projected area of ​​the lower cover body 46 on the horizontal plane, so that when the cover body 4 is covered on the cabin body 1, the ends of the four first circumferential side plates 451 are respectively abutted against the first bulkhead 41, the second bulkhead 42, the third bulkhead 43 and the fourth bulkhead 44; wherein, a pressure relief port 5 is provided on the first circumferential side plate 451 abutting against the first bulkhead 41.

[0048] Specifically, the ends of the four first circumferential side panels 451 are respectively in contact with the first bulkhead 41, the second bulkhead 42, the third bulkhead 43 and the fourth bulkhead 44, so that the cover 4 is covered on the cabin 1 and ensures that the cover 4 can close the cabin 1; the pressure relief port 5 opened on the first circumferential side panel 451 is used to install the pressure relief valve 6, so that when the pressure in the first cavity 33 is too high, after the pressure relief valve 6 is opened, the high-temperature and high-pressure gas ejected from the pressure relief port 5 will not directly impact the passengers.

[0049] In this embodiment, the lower cover body 46 includes four interconnected second circumferential side plates 452, and the four second circumferential side plates 452 are respectively arranged in one-to-one correspondence with the first bulkhead 41, the second bulkhead 42, the third bulkhead 43 and the fourth bulkhead 44. Each second circumferential side plate 452 is provided with a first fastening hole 36, and the first bulkhead 41, the second bulkhead 42, the third bulkhead 43 and the fourth bulkhead 44 are each provided with a second fastening hole 37.

[0050] Specifically, by passing fasteners through the first fastening holes 36 and the second fastening holes 37, the four second circumferential side plates 452 are fastened to the first bulkhead 41, the second bulkhead 42, the third bulkhead 43 and the fourth bulkhead 44 respectively, so that the upper cover body 45 and the cabin body 1 are fastened to each other, thereby ensuring the connection reliability between the cover body 4 and the cabin body 1.

[0051] In this embodiment, the battery structure also includes a sealing ring, which includes four interconnected sealing ring parts 61. The four sealing ring parts 61 are respectively arranged in one-to-one correspondence with the first bulkhead 41, the second bulkhead 42, the third bulkhead 43 and the fourth bulkhead 44. Each sealing ring part 61 includes a first sealing plate 62 and a second sealing plate 63. The first sealing plate 62 extends in a vertical direction, and the extension direction of the second sealing plate 63 is arranged perpendicular to the extension direction of the first sealing plate 62. The first sealing plate 62 is arranged in the middle of the second sealing plate 63, and each second sealing plate 63 is connected to the corresponding bulkhead. The first sealing plate 62, the second sealing plate 63 and the corresponding bulkhead of each sealing ring part 61 form a sealing groove, so that when the cover body 4 is covered on the cabin body 1, the second circumferential side plate 452 corresponding to the bulkhead corresponding to the sealing ring part 61 is passed through the sealing groove, so that the sealing ring seals the cover body 4.

[0052] Specifically, the second circumferential side plate 452 corresponding to the bulkhead corresponding to the sealing ring portion 61 is passed through the sealing groove, so that one side of the second circumferential side plate 452 abuts against the bulkhead, and the other side of the second circumferential side plate 452 abuts against the first sealing plate 62 of the sealing ring portion 61, and the bottom surface of the second circumferential side plate 452 abuts against the second sealing plate 63, so that the sealing ring portion 61 can fully seal the second circumferential side plate 452, thereby preventing high-temperature and high-pressure gas from overflowing from the gap between the lower cover body 46 and the cabin body 1, and further preventing high-temperature and high-pressure gas from spreading to the entire cabin body 1, preventing other non-heated battery cells from being heated over a large area, and preventing heat spread in the battery pack 2; it can also prevent the circuit 7 on the top of the battery pack 2 from being overheated and damaged.

[0053] Specifically, the sealing groove is filled with sealant so that the sealant can bond the second circumferential side plate 452 and the sealing groove, further ensuring the sealing reliability of the sealing ring for the cover body 4 .

[0054] In this embodiment, the sealing ring also includes two sealing strips 64, each of which extends in the vertical direction. The two sealing strips 64 are respectively arranged in a one-to-one correspondence with the two sealing ring parts 61 corresponding to the second bulkhead 42 and the fourth bulkhead 44. Each sealing strip 64 is connected to the second sealing plate 63 of the corresponding sealing ring part 61, so that when the cover body 4 is covered on the cabin body 1, the two side walls of the partition 32 are respectively in contact with the two sealing strips 64, so that the sealing strip 64 seals the partition 32.

[0055] Specifically, one side of the sealing strip 64 corresponding to the sealing ring portion 61 connected to the second bulkhead 42 abuts against one side wall of the partition 32, and the other side abuts against the second bulkhead 42; one side of the sealing strip 64 corresponding to the sealing ring portion 61 connected to the fourth bulkhead 44 abuts against the other side wall of the partition 32, and the other side abuts against the fourth bulkhead 44, so that the sealing strip 64 can fully seal the partition 32, preventing high-temperature and high-pressure gas from overflowing from the gap between the partition 32 and the bulkhead into the second cavity 34, causing the circuit 7 at the top of the battery pack 2 to overheat and be damaged; at the same time, it also prevents high-temperature and high-pressure gas from overflowing from the partition 32, causing high-temperature and high-pressure gas to overflow into the entire cabin 1.

[0056] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0057] The battery structure of the present invention includes a cabin 1 and a cover 4. The cover 4 is covered on the cabin 1 to close the cabin 1. By arranging a pressure relief port 5 on the side of the cover 4, which is arranged at the top of the cover 4 relative to the pressure relief port 5, it is possible to prevent high-temperature and high-pressure gas from being ejected from the top of the cover 4, causing the high-temperature and high-pressure gas to impact the passengers above the cover 4; by arranging a flow channel 31 between the connecting plate 21 and the bulkhead of the cabin 1, the flow channel 31 is connected to the first cavity 33, and the first cavity 33 is connected to the pressure relief port 5, so that the high-temperature and high-pressure gas is confined in the flow channel 31, thereby preventing the high-temperature and high-pressure gas from spreading to the entire cabin. 1, preventing the temperature of the battery pack 2 from rising sharply and preventing heat spread in the battery pack 2. At the same time, the high-temperature and high-pressure gas can quickly enter the first cavity 33 through the circulation channel 31 and then flow out through the pressure relief port 5, preventing the high-temperature and high-pressure gas from accumulating in large quantities inside the cabin 1 and causing an explosion; the circulation channel 31 and the second cavity 34 are isolated by the partition 32, which can prevent the high-temperature and high-pressure gas in the circulation channel 31 from overflowing into the second cavity 34, and avoid overheating and damage to the circuit 7 on the top of the battery pack 2, thereby solving the problem of low working safety performance of the battery pack in the prior art and improving the working safety performance of the battery structure.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0059] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery structure, characterized in that: include: A cabin (1), wherein the internal cavity of the cabin (1) is used to accommodate a battery pack (2), a connecting plate (21) is provided on one side of the battery pack (2), the connecting plate (21) is used to weld a tab, and a flow channel (31) is provided between the connecting plate (21) and the cabin wall of the cabin (1); A cover body (4) is provided on the cabin body (1) to close the cabin body (1), a pressure relief port (5) is provided on the side of the cover body (4), a partition (32) extending in a vertical direction is provided inside the cover body (4), the partition (32) separates the internal cavity of the cover body (4) into a first cavity (33) and a second cavity (34), the pressure relief port (5) and the first cavity (33) are connected, the circuit (7) at the top of the battery pack (2) is located in the second cavity (34), the partition (32) abuts against the top of the battery pack (2), and the partition (32) is provided between the connecting plate (21) and the circuit (7) at the top of the battery pack (2) to isolate the circulation channel (31) and the second cavity (34), so that the circulation channel (31) and the first cavity (33) are connected.

2. The battery structure according to claim 1, characterized in that: The battery structure further comprises two limiting plates (35), the two limiting plates (35) being spaced apart along a first preset direction, and each limiting plate (35) being arranged between the bulkhead of the cabin (1) and the connecting plate (21) along a second preset direction, so that the two limiting plates (35), the connecting plate (21) and the bulkhead of the cabin (1) together form the circulation channel (31), and the first preset direction and the second preset direction intersect.

3. The battery structure according to claim 2, characterized in that: The cover (4) is provided with a first fastening hole (36), and the wall of the cabin (1) is provided with a second fastening hole (37), so that a fastener can be passed through the first fastening hole (36) and the second fastening hole (37) to fasten the cover (4) and the cabin (1).

4. The battery structure according to claim 3, characterized in that: The cabin body (1) includes four mutually connected bulkheads, the four bulkheads being a first bulkhead (41), a second bulkhead (42), a third bulkhead (43) and a fourth bulkhead (44); the first bulkhead (41) and the third bulkhead (43) are relatively arranged between the second bulkhead (42) and the fourth bulkhead (44) along the second preset direction; the second bulkhead (42) and the fourth bulkhead (44) are relatively arranged between the first bulkhead (41) and the third bulkhead (43) along the first preset direction; the first bulkhead (41) and the third bulkhead (43) both extend along the first preset direction; the second bulkhead (42) and the fourth bulkhead (44) both extend along the second preset direction; the first bulkhead (41), the two limiting plates (35) and the connecting plate (21) together form the circulation channel (31).

5. The battery structure according to claim 4, characterized in that: The battery structure further includes a sealing plate (50), wherein there are two sealing plates (50), and the two sides of one of the two sealing plates (50) are respectively in contact with the circumferential side surface of the battery pack (2) and the second bulkhead (42), and the two sides of the other of the two sealing plates (50) are respectively in contact with the circumferential side surface of the battery pack (2) and the fourth bulkhead (44), so that the sealing plate (50) seals the circulation channel (31).

6. The battery structure according to claim 4, characterized in that: Each of the limiting plates (35) includes a first plate segment (351) and a second plate segment (352) connected to each other, wherein the first plate segment (351) extends along the second preset direction, and the second plate segment (352) extends along the first preset direction. The first end of the first plate segment (351) is connected to the first bulkhead (41), the second end of the first plate segment (351) is connected to the first end of the second plate segment (352), and the second plate segment (352) abuts against the connecting plate (21), so that the limiting plate (35) limits the connecting plate (21).

7. The battery structure according to claim 4, characterized in that: The cover body includes an upper cover body (45) and a lower cover body (46) connected to each other, the upper cover body (45) includes a top plate and four first circumferential side plates (451) connected to each other, the projection area of ​​the upper cover body (45) on the horizontal plane is larger than the projection area of ​​the lower cover body (46) on the horizontal plane, so that when the cover body (4) is covered on the cabin body (1), the ends of the four first circumferential side plates (451) respectively abut against the first bulkhead (41), the second bulkhead (42), the third bulkhead (43) and the fourth bulkhead (44); wherein the pressure relief port (5) is provided on the first circumferential side plate (451) abutting against the first bulkhead (41).

8. The battery structure according to claim 7, characterized in that: The lower cover body (46) includes four second circumferential side plates (452) connected to each other, and the four second circumferential side plates (452) are respectively arranged in a one-to-one correspondence with the first bulkhead (41), the second bulkhead (42), the third bulkhead (43) and the fourth bulkhead (44), and each of the second circumferential side plates (452) is provided with the first fastening hole (36), and the first bulkhead (41), the second bulkhead (42), the third bulkhead (43) and the fourth bulkhead (44) are all provided with the second fastening hole (37).

9. The battery structure according to claim 8, characterized in that: The battery structure also includes a sealing ring, which includes four sealing ring parts (61) connected to each other. The four sealing ring parts (61) are respectively arranged in a one-to-one correspondence with the first bulkhead (41), the second bulkhead (42), the third bulkhead (43) and the fourth bulkhead (44). Each sealing ring part (61) includes a first sealing plate (62) and a second sealing plate (63). The first sealing plate (62) extends along the vertical direction, and the extension direction of the second sealing plate (63) is opposite to the extension direction of the first sealing plate (62). The first sealing plate (62) is arranged vertically in the middle of the second sealing plate (63), and each second sealing plate (63) is connected to the corresponding bulkhead. The first sealing plate (62), the second sealing plate (63) and the corresponding bulkhead of each sealing ring part (61) form a sealing groove, so that when the cover body (4) is covered on the cabin body (1), the second circumferential side plate (452) corresponding to the bulkhead corresponding to the sealing ring part (61) is passed through the sealing groove, so that the sealing ring can seal the cover body (4).

10. The battery structure according to claim 9, characterized in that: The sealing ring also includes two sealing strips (64), each of which extends along the vertical direction. The two sealing strips (64) are respectively arranged in a one-to-one correspondence with the two sealing ring parts (61) corresponding to the second bulkhead (42) and the fourth bulkhead (44). Each sealing strip (64) is connected to the second sealing plate (63) of the corresponding sealing ring part (61), so that when the cover body (4) is covered on the cabin body (1), the two side walls of the partition (32) are respectively in contact with the two sealing strips (64), so that the sealing strip (64) seals the partition (32).

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