Battery shell and battery

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to a battery shell and a battery. A battery shell in the battery comprises a shell main body and end plates, a battery cell is contained in the shell main body, openings are formed in the two ends of the shell main body, each opening is correspondingly and fixedly provided with one end plate in a sealed mode, and an anti-explosion valve and a liquid injection hole are formed in the two end plates respectively and / or are formed in one end plate at the same time. An extending protrusion is arranged on the peripheral wall of the shell body, and a channel communicated with an inner cavity of the shell body is arranged in the extending protrusion. According to the utility model, the electrolyte injection effect and the gas exhaust effect can be ensured on the basis of ensuring the effective sealing of the end plate and the shell main body.

Description

Technical Field

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

[0002] Batteries can convert chemical energy into electrical energy. Batteries can provide stable voltage and current, ensuring long-term stable power supply to electrical equipment. In addition, batteries have a simple structure, are easy to carry, and are easy to charge and discharge. They are not affected by external climate and temperature, and have stable and reliable performance. They play a great role in all aspects of modern social life.

[0003] As people's needs continue to grow, batteries are gradually developing in the direction of large specifications, high capacity and high energy density. However, large-size, high-capacity and high-energy-density batteries have some disadvantages. Taking the blade battery as an example, its internal space is tight. When the electrolyte is injected, the electrolyte cannot be quickly transported from the injection side to the non-injection side, and the injection efficiency is low. When the non-explosion-proof valve side in the battery fails, the gas cannot be quickly transported from the non-explosion-proof valve side to the explosion-proof valve side for exhaust, which can easily lead to further failure of the battery and pose a safety hazard.

[0004] Therefore, it is urgent to invent a battery case and a battery to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a battery casing and a battery, so as to realize the rapid flow of electrolyte and gas in the battery casing, improve the injection efficiency of electrolyte and the use safety of the battery when it fails.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Battery housing, including:

[0008] A shell body, in which the battery cell is accommodated, and both ends of the shell body are opened; and

[0009] End plates, each of the openings is correspondingly and sealedly fixed with an end plate, and the explosion-proof valve and the injection hole are respectively arranged on two of the end plates and / or are simultaneously arranged on one of the end plates;

[0010] An extension protrusion is arranged on the outer peripheral wall of the shell body, and a channel communicating with the inner cavity of the shell body is arranged in the extension protrusion.

[0011] As an optional solution, the extending protrusion extends along the extending direction of the shell body; and / or

[0012] The extended protrusion extends in the image of a sine function and / or a cosine function; and / or

[0013] The extending protrusion extends along the extending direction of the shell body and surrounds the outer peripheral wall of the shell body.

[0014] As an optional solution, a plurality of the extending protrusions are arranged at intervals in the shell body, the channels in each extending protrusion are connected to the inner cavity of the shell body, and the distance between the end of each channel and the corresponding open end face is the thickness of the end plate.

[0015] As an optional solution, the cross section of the extending protrusion is arc-shaped or polygonal, and the cross section of the channel is arc-shaped or polygonal.

[0016] As an optional solution, the shell body and the extending protrusion are manufactured by an integral molding process.

[0017] As an optional solution, the protrusion height of the extended protrusion is 0.5 mm to 1 mm.

[0018] The battery comprises an electrolyte, the battery core and the battery casing as described above, wherein the battery core can extend out of the end plate and dock with an electrical device.

[0019] As an optional solution, the battery cell is provided with two poles, and each of the end plates is provided with and fixed with one pole; or

[0020] Two poles are simultaneously passed through and fixed on any one of the two end plates.

[0021] As an optional solution, the injection hole includes a first injection part and a second injection part that are coaxial and conductive with each other, the first injection part is located at an end of the end plate close to the outside, and the aperture of the first injection part is larger than that of the second injection part.

[0022] As an optional solution, the explosion-proof valve includes an explosion-proof piece and a protective film. An explosion-proof hole is opened on any one of the two end plates. The explosion-proof piece and the protective film are both fixed in the explosion-proof hole. The protective film is arranged at one end of the explosion-proof piece close to the outside. The explosion-proof piece is used to discharge gas, and the protective film is used to protect the explosion-proof piece.

[0023] Beneficial effects of the utility model:

[0024] The battery casing provided by the utility model realizes sealed accommodation of the battery cell by arranging the battery cell in the casing body and using the end plates to block the two open ends of the casing body; by arranging the injection hole on the end plate, the electrolyte can be injected into the battery cell in the battery casing; by arranging the explosion-proof valve on the end plate, the gas can be exhausted by opening the explosion-proof valve when the battery cell fails; by arranging the extension protrusion on the outer peripheral wall of the casing body and arranging the channel in the extension protrusion which is conductive to the inner cavity of the casing body, when the electrolyte is injected, the electrolyte can be easily flowed into the side of the battery cell away from the injection hole along the channel, thereby improving the injection efficiency; when the battery cell fails, the gas can be easily discharged quickly along the channel along the explosion-proof valve, thereby improving the use safety; and on the basis of ensuring the effective sealing of the end plate and the casing body, the injection effect of the electrolyte and the exhaust effect of the gas can be guaranteed.

[0025] The utility model also provides a battery. By applying the above-mentioned battery shell, when electrolyte is injected, the electrolyte can flow quickly along the channel to the side of the battery cell away from the injection hole, thereby improving the injection efficiency. When the battery cell fails, the gas can be quickly discharged along the channel along the explosion-proof valve, thereby improving the safety of use. On the basis of ensuring the effective sealing of the end plate and the shell body, the injection effect of the electrolyte and the exhaust effect of the gas can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is one of the structural schematic diagrams of the battery housing provided in the first embodiment of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the housing body provided in the first embodiment of the utility model;

[0028] Figure 3 This is one of the side views of the battery housing provided in the first embodiment of the utility model;

[0029] Figure 4 This is the second side view of the battery housing provided in the first embodiment of the utility model;

[0030] Figure 5 It is a partial cross-sectional view of the housing body provided in the first embodiment of the utility model;

[0031] Figure 6 It is a top view of the housing body provided in the second embodiment of the present utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the housing body provided in the third embodiment of the present utility model;

[0033] Figure 8 It is a top view of the housing body provided by the fourth embodiment of the utility model;

[0034] Fig. 9 It is a partial cross-sectional view of the housing body provided by the fifth embodiment of the present utility model;

[0035] Fig.10 It is a side view of the battery housing provided by the sixth embodiment of the utility model;

[0036] Fig.11 It is a side view of the battery housing of the eighth embodiment of the present utility model.

[0037] In the figure:

[0038] 100. Battery casing;

[0039] 110. Shell body; 111. Extended protrusion; 1111. Channel; 112. Opening; 120. End plate; 121. Liquid injection hole; 122. Explosion-proof hole; 1211. First liquid injection part; 1212. Second liquid injection part; 200. Explosion-proof valve; 300. Pole. DETAILED DESCRIPTION

[0040] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] Embodiment 1

[0045] As people's needs continue to grow, batteries are gradually developing in the direction of large specifications, high capacity and high energy density. However, large-size, high-capacity and high-energy-density batteries have some disadvantages. Taking the blade battery as an example, its internal space is tight. When the electrolyte is injected, the electrolyte cannot be quickly transported from the injection side to the non-injection side, and the injection efficiency is low. When the non-explosion-proof valve side in the battery fails, the gas cannot be quickly transported from the non-explosion-proof valve side to the explosion-proof valve side for exhaust, which can easily lead to further failure of the battery and pose a safety hazard.

[0046] In order to solve the above problems, Figure 1 to Figure 4 As shown, this embodiment provides a battery housing 100. The battery housing 100 includes a housing body 110 and an end plate 120, wherein the housing body 110, the battery cell is accommodated in the housing body 110, both ends of the housing body 110 are provided with openings 112, each opening 112 corresponds to an end plate 120 sealed and fixed, the explosion-proof valve 200 and the injection hole 121 are respectively arranged on the two end plates 120 and / or are simultaneously arranged on one end plate 120, an extension protrusion 111 is arranged on the outer peripheral wall of the housing body 110, and a channel 1111 that is conductive with the inner cavity of the housing body 110 is arranged in the extension protrusion 111, and the electrolyte and / or gas can move along the channel 1111 from the end plate 120 at one end of the housing body 110 to the end plate 120 at the other end of the housing body 110.

[0047] When a battery safety problem occurs, a large amount of gas may accumulate in the battery shell body 110. The gas can flow along the channel 1111 to the explosion-proof valve 200 on the end plate 120 and flow out through the explosion-proof valve 200 to complete the explosion relief and avoid safety accidents.

[0048] The battery case 100 achieves sealed accommodation of the battery cell by placing the battery cell in the case body 110 and using the end plates 120 to block the two end openings 112 of the case body 110. The electrolyte can be injected into the battery cell in the battery case 100 by providing the injection hole 121 on the end plate 120. When the battery cell fails, the explosion-proof valve 200 can be opened to exhaust the gas. The extension protrusion 112 is provided on the outer peripheral wall of the case body 110. 1, and a channel 1111 communicated with the inner cavity of the shell body 110 is provided in the extended protrusion 111, when the electrolyte is injected, the electrolyte can flow quickly along the channel 1111 to the side of the battery cell away from the injection hole 121, thereby improving the injection efficiency. When the battery cell fails, the gas can be quickly discharged along the channel 1111 along the explosion-proof valve 200, thereby improving the use safety. On the basis of ensuring the effective sealing of the end plate 120 and the shell body 110, the injection effect of the electrolyte and the exhaust effect of the gas can be guaranteed.

[0049] It should be noted that the battery housing 100 provided in this embodiment is not only applicable to blade batteries, but also applicable to various large-size, high-capacity and high-energy-density batteries, which is not specifically limited in this embodiment.

[0050] When the battery cell in the battery casing 100 fails, the gas pressure in the battery casing 100 gradually increases. However, since the battery casing 100 is filled with battery cells, the gas at the end of the battery casing 100 away from the explosion-proof valve 200 can only slowly flow along the gap between the battery cell and the battery casing 100 to the end of the battery casing 100 close to the explosion-proof valve 200 and be discharged along the explosion-proof valve 200. This causes the gas in the battery casing 100 to be unable to be discharged along the explosion-proof valve 200 in time, which can easily cause tearing of the battery casing 100 or thermal runaway of the battery. By providing an extended protrusion 111 on the shell body 110 of the battery shell 100, and providing a channel 1111 in the extended protrusion 111 that is connected to the inner cavity of the shell body 110, when the battery cell in the battery shell 100 fails, the gas pressure in the battery shell 100 gradually increases, and the gas at one end of the battery shell 100 away from the explosion-proof valve 200 can quickly flow along the channel 1111 to the end of the battery shell 100 close to the explosion-proof valve 200 and be discharged along the explosion-proof valve 200, thereby ensuring the exhaust effect of the gas.

[0051] When the electrolyte is injected into the battery shell 100 along the injection hole 121, since the battery shell 100 is filled with battery cells, the electrolyte at one end of the battery shell 100 close to the injection hole 121 can only slowly flow along the gap between the battery cell and the battery shell 100 to the end of the battery shell 100 away from the injection hole 121, which results in low electrolyte injection efficiency. By providing an extension protrusion 111 on the shell body 110 of the battery shell 100, and providing a channel 1111 in the extension protrusion 111 that is conductive with the inner cavity of the shell body 110, when the electrolyte is injected, the electrolyte at one end of the battery shell 100 close to the injection hole 121 can flow quickly along the channel 1111 to the end of the battery shell 100 away from the injection hole 121, so as to achieve rapid injection and infiltration of the battery cells in the battery shell 100, and improve the electrolyte injection efficiency.

[0052] In addition, in this embodiment, the distance between each end of the channel 1111 and the corresponding end face of the opening 112 is the thickness of the end plate 120. By limiting the distance between the two ends of the channel 1111 and the two openings 112 to the thickness of the end plate 120, effective sealing between the end plate 120 and the shell body 110 can be further ensured.

[0053] As an optional solution, the shell body 110 and the extension protrusion 111 are manufactured by an integrated molding process. By manufacturing the shell body 110 and the extension protrusion 111 in an integrated molding process, not only is the manufacturing efficiency high, but it can also ensure that the specifications of the battery shell 100 are consistent, which is convenient for the subsequent production and manufacturing of batteries. It should be noted that in this embodiment, the shell body 110 and the extension protrusion 111 are integrally processed by stamping. Stamping not only has high processing accuracy, but also can process products with complex curved surfaces with high processing efficiency. In other embodiments, the shell body 110 and the extension protrusion 111 can also be processed by casting or other integrated molding processes, which is not specifically limited in this embodiment.

[0054] In addition, since the shell body 110 and the extending protrusion 111 in this embodiment are manufactured by stamping, it can be ensured that the wall thickness of the shell body 110 is the same as the wall thickness of the extending protrusion 111 .

[0055] In this embodiment, the extension protrusion 111 extends along the extension direction of the shell body 110, that is, the extension protrusion 111 extends in a straight line in the shell body 110, and can connect the two ends of the shell body 110 in the shortest path, shortening the electrolyte injection path and the gas exhaust path, and further improving the electrolyte injection efficiency and the gas exhaust efficiency.

[0056] As an alternative, Figure 5As shown, the cross section of the extension protrusion 111 is arc-shaped, and the cross section of the channel 1111 is arc-shaped. By defining the cross section of the extension protrusion 111 as an arc and the cross section of the channel 1111 as an arc, the outer surface of the extension protrusion 111 has a buffer slope, which can reduce the influence of the extension protrusion 111 on the outer shape of the shell body 110, and facilitate the subsequent assembly and use of the battery shell 100.

[0057] Specifically, the protrusion height of the extended protrusion 111 is 0.5mm to 1mm. When the wall thickness of the extended protrusion 111 is the same as the wall thickness of the shell body 110, by limiting the protrusion height of the extended protrusion 111, it is possible to ensure the flow guiding effect of the inner channel 1111 of the extended protrusion 111 on the electrolyte and the flow guiding effect on the gas without affecting the external structure of the battery shell 100, thereby ensuring the subsequent assembly and use of the battery shell 100. It should be noted that in this embodiment, the protrusion height of the extended protrusion 111 is 0.8mm. In other embodiments, the protrusion height of the extended protrusion 111 can also be arbitrarily adjusted within the range of 0.5mm to 1mm according to actual needs, and this embodiment is not specifically limited.

[0058] Embodiment 2

[0059] This embodiment provides a battery housing 100. The specific structure of the battery housing 100 provided in this embodiment is substantially the same as that of the first embodiment, and the specific structure of the battery housing 100 provided in this embodiment is different from that of the first embodiment in that the extension shape of the extension protrusion 111 is different.

[0060] Specifically, if Figure 6 As shown, the extension protrusion 111 extends in the image of a sine function and / or a cosine function. By extending the extension protrusion 111 on the housing body 110 in the image of a sine function and / or a cosine function, the volume of the channel 1111 in the extension protrusion 111 can be increased. When the electrolyte is injected, more electrolyte can be stored by using the channel 1111, further increasing the service life of the battery.

[0061] Embodiment 3

[0062] This embodiment provides a battery housing 100. The specific structure of the battery housing 100 provided in this embodiment is substantially the same as that of the first embodiment, and the specific structure of the battery housing 100 provided in this embodiment is different from that of the first embodiment in that the extension shape of the extension protrusion 111 is different.

[0063] Specifically, if Figure 7As shown, the extension protrusion 111 extends along the extension direction of the shell body 110 and surrounds the outer peripheral wall of the shell body 110 to further increase the volume of the channel 1111 in the extension protrusion 111, further increase the storage volume of the electrolyte, and thus increase the service life of the battery.

[0064] Embodiment 4

[0065] This embodiment provides a battery housing 100. The specific structure of the battery housing 100 provided in this embodiment is substantially the same as that of the first embodiment, and the specific structure of the battery housing 100 provided in this embodiment is different from that of the first embodiment in that the number of the extending protrusions 111 is different.

[0066] Specifically, if Figure 8 As shown, three extension protrusions 111 are arranged at intervals in the shell body 110, each extension protrusion 111 extends along the extension direction of the shell body 110, and the channel 1111 in each extension protrusion 111 is connected to the inner cavity of the shell body 110, and the distance between the end of each channel 1111 and the end face of the corresponding opening 112 is the thickness of the end plate 120. By arranging three extension protrusions 111 at intervals in the shell body 110, it is ensured that each extension protrusion 111 extends along the extension direction of the shell body 110, the channel 1111 in each extension protrusion 111 is connected to the inner cavity of the shell body 110, and the distance between the end of each channel 1111 and the corresponding opening 112 is the thickness of the end plate 120, which can store more electrolyte while ensuring the injection efficiency of the electrolyte and the discharge efficiency of the gas, so that the battery shell 100 can not only improve the safety of the battery, but also improve the battery life.

[0067] It should be noted that, in this embodiment, three extension protrusions 111 are arranged at intervals in the housing body 110. In other embodiments, the specific number of the extension protrusions 111 in the housing body 110 can also be adjusted according to actual needs, and this embodiment does not specifically limit it.

[0068] Embodiment 5

[0069] This embodiment provides a battery housing 100. The specific structure of the battery housing 100 provided in this embodiment is substantially the same as that of the first embodiment, and the specific structure of the battery housing 100 provided in this embodiment is different from that of the first embodiment in that the cross-sectional shape of the extension protrusion 111 is different from that of the channel 1111.

[0070] Specifically, if Fig. 9As shown, the cross section of the extension protrusion 111 is rectangular, and the cross section of the channel 1111 is rectangular. By setting the cross section of the extension protrusion 111 to be rectangular, and setting the cross section of the channel 1111 to be rectangular, when the battery housing 100 is subsequently assembled, a rectangular groove adapted to the extension protrusion 111 can be set at the assembly position corresponding to the extension protrusion 111 in the battery housing 100, so that the extension protrusion 111 is used to provide assembly positioning for the assembly of the battery housing 100, which is convenient for subsequent assembly and use, and the channel 1111 with a rectangular cross section can facilitate the stamping production of the extension protrusion 111.

[0071] It can be understood that the cross-section of the extension protrusion 111 can be any polygonal shape, and the cross-section of the channel 1111 can also be any polygonal shape. It only needs to ensure that an assembly groove compatible with the extension protrusion 111 is provided at the assembly position. This embodiment does not make specific limitations.

[0072] Embodiment 6

[0073] This embodiment provides a battery housing 100. The specific structure of the battery housing 100 provided in this embodiment is substantially the same as that of the first embodiment, and the specific structure of the battery housing 100 provided in this embodiment is different from that of the first embodiment in that the injection hole 121 and the explosion-proof valve 200 are arranged at different positions.

[0074] Specifically, if Fig.10 As shown, the explosion-proof valve 200 and the injection hole 121 are simultaneously arranged on one end plate 120. By arranging the explosion-proof valve 200 and the injection hole 121 on one end plate 120, the explosion-proof valve 200 and the injection hole 121 can be continuously arranged without replacing the end 120, thereby improving the processing efficiency of the end plate 120.

[0075] Embodiment 7

[0076] This embodiment provides a battery. The battery includes an electrolyte, a battery cell, and a battery housing 100 provided by any one of the above-mentioned embodiments 1 to 6, wherein the battery cell can extend out of the end plate 120 and dock with an electrical device to realize power supply to the electrical device. The battery uses the battery housing 100 provided by any one of the above-mentioned embodiments 1 to 6, and when the electrolyte is injected, it is convenient for the electrolyte to flow quickly along the channel 1111 to the side of the battery cell away from the injection hole 121, thereby improving the injection efficiency. When the battery cell fails, it is convenient for the gas to be quickly discharged along the channel 1111 along the explosion-proof valve 200, thereby improving the safety of use. On the basis of ensuring the effective sealing of the end plate 120 and the housing body 110, the injection effect of the electrolyte and the exhaust effect of the gas can be ensured.

[0077] Furthermore, if Figure 3 and Figure 4 As shown, two poles 300 are arranged on the battery cell, and a pole 300 is passed through and fixed on each end plate 120 . The two poles 300 are respectively connected to the positive input terminal and the negative input terminal of the electrical equipment to realize power supply to the electrical equipment.

[0078] As an alternative, Figure 3 As shown, the explosion-proof valve 200 includes an explosion-proof disc and a protective film. An explosion-proof hole 122 is provided on any one of the two end plates 120. The explosion-proof disc and the protective film are both fixed in the explosion-proof hole 122. The protective film is arranged at one end of the explosion-proof disc close to the outside. The explosion-proof disc is used to discharge gas, and the protective film is used to protect the explosion-proof disc. When the gas pressure in the battery housing 100 gradually increases, the gas pressure in the battery housing 100 first reaches the explosion threshold of the explosion-proof disc, and then the explosion-proof disc ruptures. The gas in the battery housing 100 is discharged through the channel 1111 and the gap generated after the explosion-proof disc ruptures in turn, so as to realize the explosion-proof of the battery housing 100. Moreover, since the protective film is arranged at one end of the explosion-proof disc close to the outside, when the explosion-proof disc is not ruptured at ordinary times, the protective film can prevent the explosion-proof disc from being scratched by the outside. When the explosion-proof disc ruptures, the protective film can prevent the debris generated by the explosion-proof disc rupture from splashing to the outside, and can collect the debris generated by the explosion-proof disc rupture.

[0079] As an alternative, Figure 4 As shown, the injection hole 121 includes a first injection part 1211 and a second injection part 1212 that are coaxial and in communication with each other. The first injection part 1211 is located at one end of the end plate 120 close to the outside, and the aperture of the first injection part 1211 is larger than the aperture of the second injection part 1212. By arranging the injection hole 121 as the first injection part 1211 and the second injection part 1212 that are coaxial and in communication with each other, the first injection part 1211 is located at one end of the end plate 120 close to the outside, ensuring that the aperture of the first injection part 1211 is larger than the aperture of the second injection part 1212, the injection hole 121 can be formed into a stepped hole with a gradually decreasing aperture, so that the electrolyte injection device can inject liquid along the stepped injection hole 121.

[0080] Embodiment 8

[0081] This embodiment provides a battery. The specific structure of the battery provided in this embodiment is basically the same as that of the seventh embodiment. The specific structure of the battery provided in this embodiment is different from that of the seventh embodiment in that the arrangement position of the pole 300 of the battery cell is different.

[0082] Specifically, if Fig.11 As shown, two poles 300 of the battery cell are simultaneously penetrated and fixed on an end plate 120. In addition, a liquid injection hole 121 is also opened on the end plate 120 and an explosion-proof valve 200 is fixed thereon.

[0083] It is understandable that in other embodiments, the end plate on which two poles 300 are simultaneously penetrated and fixed may only have an injection hole 121, or only have an explosion-proof valve 200, or neither an injection hole 121 nor an explosion-proof valve 200, which is not specifically limited in this embodiment.

[0084] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A battery housing, characterized in that: include: A shell body (110), in which the battery cell is accommodated, and both ends of the shell body (110) are provided with openings (112); and An end plate (120), each of the openings (112) being correspondingly and sealedly fixed with an end plate (120), and the explosion-proof valve (200) and the injection hole (121) being respectively arranged on two of the end plates (120) and / or simultaneously arranged on one of the end plates (120); An extension protrusion (111) is provided on the outer peripheral wall of the shell body (110), and a channel (1111) communicating with the inner cavity of the shell body (110) is provided in the extension protrusion (111).

2. The battery housing according to claim 1, characterized in that: The extending protrusion (111) extends along the extending direction of the housing body (110); and / or The extended protrusion (111) extends in the image of a sine function and / or a cosine function; and / or The extending protrusion (111) extends along the extending direction of the shell body (110) and surrounds the outer peripheral wall of the shell body (110).

3. The battery housing according to claim 1, characterized in that: A plurality of extension protrusions (111) are arranged at intervals in the shell body (110); the channel (1111) in each extension protrusion (111) is in communication with the inner cavity of the shell body (110); and the distance between the end of each channel (1111) and the end surface of the corresponding opening (112) is equal to the thickness of the end plate (120).

4. The battery housing according to claim 1, characterized in that: The cross section of the extending protrusion (111) is arc-shaped or polygonal, and the cross section of the channel (1111) is arc-shaped or polygonal.

5. The battery housing according to claim 1, characterized in that: The shell body (110) and the extending protrusion (111) are manufactured by an integral molding process.

6. The battery housing according to claim 1, characterized in that: The protrusion height of the extended protrusion (111) is 0.5 mm to 1 mm.

7. A battery, characterized in that The battery comprises an electrolyte, the battery core and a battery casing as claimed in any one of claims 1 to 6, wherein the battery core can extend out of the end plate (120) and dock with an electrical device.

8. The battery according to claim 7, characterized in that The battery core is provided with two poles (300), and each end plate (120) is provided with one pole (300) fixed thereon; or Two poles (300) are simultaneously passed through and fixed on any one of the two end plates (120).

9. The battery according to claim 7, characterized in that The injection hole (121) comprises a first injection part (1211) and a second injection part (1212) which are coaxial and conductive with each other, wherein the first injection part (1211) is located at an end of the end plate (120) close to the outside, and the aperture of the first injection part (1211) is larger than the aperture of the second injection part (1212).

10. The battery according to claim 7, characterized in that The explosion-proof valve (200) comprises an explosion-proof disc and a protective film. An explosion-proof hole (122) is provided on any one of the two end plates (120). The explosion-proof disc and the protective film are both fixed in the explosion-proof hole (122). The protective film is arranged at one end of the explosion-proof disc close to the outside. The explosion-proof disc is used to discharge gas, and the protective film is used to protect the explosion-proof disc.

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