Battery

Abstract

The utility model relates to the technical field of power batteries, particularly provides a battery, and aims to solve the problem of short circuit caused by contact with other metal parts due to incapability of arranging an insulating film on the end surface of the battery in the prior art. In order to achieve the purpose, the battery comprises a shell and an insulating part, the shell comprises a first end face, and the insulating part is fixedly connected with the first end face. According to the battery, the insulating part is arranged on the first end face of the shell and can prevent the end face of the battery from being in contact with other metal parts, so that the problem of short circuit of the battery is solved, and the insulating property of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries and specifically provides a battery. Background Art

[0002] With the popularity of new energy vehicles, the demand for electric driving range of new energy vehicles is getting higher and higher. The energy density of the power battery pack and the vehicle weight are the most important factors affecting the electric driving range of new energy vehicles. The vehicle weight mainly includes the body weight and the power battery weight. Optimizing the structure of the power battery to reduce the weight of the power battery can also help improve the driving range of new energy vehicles.

[0003] A power battery includes multiple batteries, which are connected in series or in parallel, and together with some control units, collection systems, cooling systems, etc., form a complete power battery. In a power battery, since the shell of a single battery is usually made of metal, an insulating film is usually provided on the battery shell to prevent the battery from contacting other metal parts and causing a short circuit. However, due to the presence of poles, explosion-proof valves, injection holes and other components at the ends of the battery, an insulating film cannot be provided on the end face of the battery, making it easy for this part to contact other metal parts and cause a short circuit.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem in the prior art that the end surface of the battery cannot be provided with an insulating film and is easily in contact with other metal parts to cause a short circuit.

[0006] The present application provides a battery, the battery comprising a shell and an insulating member, the shell comprising a first end surface, and the insulating member is fixedly connected to the first end surface.

[0007] In a preferred technical solution of the above battery, the housing further includes a second end face adjacent to the first end face, and the insulating member includes a bent portion affixed to the second end face.

[0008] In a preferred technical solution of the above battery, a glue layer is provided between the shell and the insulating member.

[0009] In a preferred technical solution of the above-mentioned battery, the first end surface is provided with a first pole, and the insulating member is provided with a first through hole through which the first pole passes; and / or, the first end surface is provided with a second pole, and the insulating member is provided with a second through hole through which the second pole passes; and / or, the first end surface is provided with a third pole, and the insulating member is provided with a third through hole through which the third pole passes.

[0010] In the preferred technical solution of the above-mentioned battery, the first end face is provided with an explosion-proof valve, and the insulating member is provided with a fourth through hole opposite to the explosion-proof valve; and / or, the first end face is provided with a liquid injection hole, and the insulating member is provided with a fifth through hole connected to the liquid injection hole; and / or, the first end face is provided with an information reading area, and the insulating member is provided with a sixth through hole opposite to the information reading area.

[0011] In a preferred technical solution of the above battery, the housing is provided with an insulating film, and an edge of the insulating film is located between the first end surface and the insulating member.

[0012] In a preferred technical solution of the above battery, in the second direction, the insulating member includes a supporting block arranged at one end.

[0013] In a preferred technical solution of the above battery, the housing includes a connecting portion, the insulating member is provided with a groove, and the connecting portion is received in the groove.

[0014] In a preferred technical solution of the above-mentioned battery, the shell includes a first shell, a partition and a second shell arranged in a first direction, the connecting part includes a first connecting part arranged on the first shell and a second connecting part arranged on the second shell, and the edges of the first connecting part, the second connecting part and the partition are accommodated in the groove.

[0015] In the preferred technical solution of the above-mentioned battery, the battery also includes a first battery cell, a second battery cell and an electrical connector arranged on the partition, the first battery cell is located between the first shell and the partition, the second battery cell is located between the second shell and the partition, one end of the electrical connector is electrically connected to the first battery cell, and the other end of the electrical connector is electrically connected to the second battery cell.

[0016] Those skilled in the art can understand that the battery of the utility model includes a shell and an insulating member, the shell includes a first end face, and the insulating member is fixedly connected to the first end face. In the above arrangement, by arranging the insulating member on the first end face of the shell, the insulating member can prevent the end face of the battery from contacting other metal parts, thereby preventing the battery from short-circuiting, thereby improving the insulation performance of the battery.

[0017] Furthermore, by fitting the bent portion on the insulating member to the second end surface of the shell, the connection strength between the insulating member and the shell can be improved, and the insulation performance of the battery can be further enhanced.

[0018] Furthermore, by providing a first through hole through which the first pole passes, a second through hole through which the second pole passes, and a third through hole through which the third pole passes on the insulating member, installation of the insulating member is facilitated without affecting use of the battery.

[0019] Furthermore, by arranging a fourth through hole opposite to the explosion-proof valve, a fifth through hole connected to the injection hole, and a sixth through hole opposite to the information reading area on the insulating member, the installation of the insulating member is facilitated without affecting the use of the battery.

[0020] Furthermore, by locating a portion of the edge of the insulating film between the edge of the first end surface and the edge of the insulating member, the overall insulation effect of the battery can be improved.

[0021] Furthermore, by providing a groove for accommodating the connecting portion on the insulating member, installation of the insulating member is facilitated and the connecting portion can be protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0023] Figure 1 The structure of the battery of the utility model is Figure 1 ;

[0024] Figure 2 The structure of the battery of the utility model is Figure 2 ;

[0025] Figure 3 It is an exploded diagram of the battery of the utility model;

[0026] Figure 4 The structure of the insulating member of the battery of the utility model Figure 1 ;

[0027] Figure 5 The structure of the insulating member of the battery of the utility model Figure 2 ;

[0028] Figure 6 The structure of the insulating member of the battery of the utility model Figure 3 ;

[0029] Figure 7 It is a structural diagram of the outer shell of the battery of the utility model;

[0030] Figure 8 It is an exploded view of the shell of the battery of the utility model.

[0031] List of reference numerals:

[0032] 1. Shell; 11. First shell; 111. Third pole; 112. First pole; 113. Liquid injection hole; 114. Explosion-proof valve; 115. Information reading area; 12. Second shell; 121. Second pole; 122. Explosion-proof valve; 123. Liquid injection hole; 13. Partition; 131. Electrical connector; 2. Insulator; 14. First end face; 15. Second end face; 16. Connecting part; 161. First connecting part; 162. Second connecting part; 21. Insulator body; 211. First through hole; 212. Second through hole; 213. Third through hole; 214. Fourth through hole; 215. Fifth through hole; 216. Sixth through hole; 22. Bending part; 23. Support block; 24. Groove; 5. Cell; 51. First cell; 52. Second cell. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.

[0034] It should be noted that in the description of the present invention, the terms "upper", "lower", "top", "bottom" and other terms indicating directions or positional relationships are based on directions or positional relationships in actual applications. This is only for the convenience of description, and does not indicate or imply that the device to be protected must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] First reference Figure 1-8 , the battery of this application is introduced.

[0037] like Figure 1-8 As shown, in order to solve the problem of short circuit caused by contact between the battery end face and the metal parts in the battery pack in the prior art, the battery of the present application includes a shell 1 and an insulating member 2, the shell 1 includes a first end face, and the insulating member 2 is fixedly connected to the first end face 14.

[0038] In the present application, an insulating member 2 is provided on the first end face 14 of the housing 1. The insulating member 2 can prevent the end face of the battery from contacting other metal parts, thereby preventing the battery from short-circuiting, thereby improving the insulation performance of the battery.

[0039] See below for further reference Figure 1-8 , a preferred embodiment of the battery of the present application is introduced. Those skilled in the art will understand that the embodiments described below are only used to illustrate the principles of the present application and are not intended to limit the scope of protection of the present application. On the premise that the battery at least includes a housing 1 and an insulating member 2, those skilled in the art can adjust the following settings so that the present application can be applied to more specific application scenarios.

[0040] See also Figure 1-8 The battery comprises a housing 1, a cell 5 accommodated in the housing 1, and an insulating member 2, an insulating film, a third pole 111, a first pole 112, a second pole 121, explosion-proof valves 114 and 122, injection holes 113 and 123, and an information reading area 115 arranged on the housing 1. The first pole 112, the third pole 111, and the second pole 121 are arranged at one end of the housing 1 in the second direction, and the explosion-proof valves 114 and 122, the injection holes 113 and 123, and the information reading area 115 are arranged at the other end.

[0041] See next Figure 1-3 The housing 1 includes a Figure 1 The two first end surfaces 14 on both sides of the Z direction shown in FIG. Figure 1 Y direction shown) on both sides and the third direction (as shown Figure 1 The four second end faces 15 on both sides of the housing 1 in the X direction (shown). The two first end faces 14 are each provided with an insulating member 2, and an insulating film is wrapped around the two second end faces 15 and the two end faces in the first direction of the housing 1, and the end edge of the insulating film in the second direction is between the edge of the first end face and the edge of the insulating member 2.

[0042] It should be noted that the present application has no limitation on the specific form of the insulating film, as long as the insulating film can play an insulating role, for example, the insulating film can be an insulating blue film.

[0043] See next Figure 3-6The insulating member 2 includes an insulating member body 21 and a bending portion 22 arranged on the insulating member body 21. The insulating member body 21 is arranged on the first end face 14, and the bending portion 22 is arranged on the second end face 15, so that the insulating film arranged on the second end face 15 is arranged between the bending portion 22 and the battery cell 5, thereby improving the overall insulation effect of the battery. A support block 23 is arranged on the bending portion 22, and the support block 23 is extended along the second direction. When the battery is installed in the battery pack, the support block 23 is located at the lower end of the insulating member 2 and can contact the battery pack, thereby supporting the battery and improving the stability of the battery.

[0044] It should be noted that the present application has no restrictions on the connection method of the insulating member body 21 and the bending portion 22, as long as the insulating member body 21 and the bending portion 22 are connected to form the insulating member 2. For example, the insulating member body 21 and the bending portion 22 are integrally formed. In addition, the present application has no restrictions on the connection method of the insulating member 2 and the housing 1, as long as the insulating member 2 can be set on the housing 1. For example, a glue layer (not shown) is provided between the insulating member 2 and the housing 1, so that the insulating member 2 can be fixed on the housing 1.

[0045] Of course, the position of the support block 23 is not fixed in the present application, and those skilled in the art can adjust it as needed. For example, the support block 23 can be set on the insulating body 21. In addition, in other preferred embodiments, the setting of the support block 23 is not necessary, and those skilled in the art can choose it as needed.

[0046] See next Figure 1-3 The housing 1 includes a first shell 11, a partition 13 and a second shell 12 arranged in a first direction. An open first cavity is formed on the first shell 11, and an open second cavity is formed on the second shell 12. The opening on the first shell 11 is arranged opposite to the opening on the second shell 12. A connecting portion 16 is provided on the housing 1. The connecting portion 16 includes a first connecting portion 161 provided on the first shell 11 and a second connecting portion 162 provided on the second shell 12. The first connecting portion 161 is provided along the outer periphery of the first shell 11, and the second connecting portion 162 is provided along the outer periphery of the second shell 12. The partition 13 is provided between the first shell 11 and the second shell 12. The first connecting portion 161 and the second connecting portion 162 are respectively provided on both sides of the partition 13 in the first direction, and are respectively connected to the partition 13, so that the first cavity and the second cavity are not connected to each other. A groove 24 is provided on the insulating member 2. The edges of the first connecting portion 161, the second connecting portion 162 and the partition 13 are accommodated in the groove 24.

[0047] In other preferred embodiments, the first connection portion 161 and the second connection portion 162 are not necessarily provided, and those skilled in the art can select them as needed. When the first connection portion 161 and the second connection portion 162 are not provided, the partition 13 can also extend out of the housing 1 and be connected to the first shell 11 and the second shell 12 respectively, and the portion of the partition 13 extending out of the housing 1 is accommodated in the groove 24. Alternatively, when the first connection portion 161 and the second connection portion 162 are not provided, the partition 13 does not extend out of the housing 1 either. In this case, the partition 13 can be connected to the inner wall of the first shell 11 or the second shell 12, and since there is no connection portion 16 on the housing 1, the groove 24 on the insulating member 2 does not exist.

[0048] In addition, the present application has no limitation on the material of the first shell 11, the second shell 12 and the partition 13, as long as the material of the first shell 11, the second shell 12 and the partition 13 is metal. For example, the material of the first shell 11, the second shell 12 and the partition 13 can all be aluminum alloy.

[0049] See next Figure 2 The battery cell 5 includes a first battery cell 51 and a second battery cell 52. The first battery cell 51 is accommodated in a first cavity between the first shell 11 and the partition 13, and the second battery cell 52 is accommodated in a second cavity between the second shell 12 and the partition 13. An electrical connector 131 is provided on the partition 13, one end of the electrical connector 131 is electrically connected to the first battery cell 51, and the other end of the electrical connector 131 is electrically connected to the second battery cell 52.

[0050] Then see Figure 4-6A first pole 112 and a third pole 111 are arranged on a first end surface 14 of the first shell 11, and a third through hole 213 through which the third pole 111 passes and a first through hole 211 opposite to the first pole 112 are arranged on the insulating member 2 arranged on the first end surface 14. An explosion-proof valve 114, a liquid injection hole 113 and an information reading area 115 are arranged on the other first end surface 14 of the first shell 11, and a fourth through hole 214 opposite to the explosion-proof valve 114, a fifth through hole 215 corresponding to the liquid injection hole 113, and a sixth through hole 216 opposite to the information reading area 115 are arranged on the insulating member 2 arranged on the first end surface 14, wherein the information reading area 115 may be a mark for reading information such as a QR code, wherein the relevant information of the battery is stored, which belongs to the prior art and will not be described in detail here. Through the arrangement of the sixth through hole 216, the relevant information of the battery can be conveniently obtained through the information reading area 115, which is simple to operate and convenient to use. A second pole 121 is disposed on a first end surface 14 of the second shell 12, and a second through hole 212 through which the second pole 121 passes is disposed on the insulating member 2 disposed on the first end surface 14. An explosion-proof valve 122 and a liquid injection hole 123 are disposed on the other first end surface 14 of the second shell 12, and correspondingly, a fourth through hole 214 opposite to the explosion-proof valve 122 and a fifth through hole 215 connected to the liquid injection hole 123 are disposed on the insulating member 2 on the first end surface 14. Since the third pole 111, the first pole 112 and the second pole 121 are disposed at the same end of the shell 1 in the second direction, the third through hole 213, the first through hole 211 and the second through hole 212 are disposed on the same insulating member 2. Furthermore, when the explosion-proof valves 114 and 122 , the injection holes 113 and 123 and the information reading area 115 are arranged on the same first end surface 14 of the housing 1 , the two fourth through holes 214 , the two fifth through holes 215 and the sixth through hole 216 are simultaneously arranged on another insulating member 2 .

[0051] Furthermore, the first pole 112 is electrically connected to the first battery cell 51, and the second pole 121 is electrically connected to the second battery cell 52, so that the electric energy of the first battery cell 51 and the second battery cell 52 can be output respectively. The third pole 111 is electrically connected to the first battery cell 51, so that the voltage or temperature and other parameters of the first battery cell 51 can be sampled. In other embodiments, the third pole 111 can also be electrically connected to the second battery cell 52 to sample the voltage or temperature and other parameters of the second battery cell 52, which will not be described in detail here.

[0052] Of course, the present application does not fix the positions of the first pole 112, the third pole 111, the second pole 121, the explosion-proof valves 114 and 122, the information reading area 115, and the injection holes 113 and 123, and those skilled in the art can adjust them as needed. For example, the third pole 111, the second pole 121, the explosion-proof valves 114 and 122, the first pole 112, the injection holes 113 and 123, and the information reading area 115 are arranged on the same first end face 14 of the housing 1. Alternatively, the third pole 111, the second pole 121, the explosion-proof valves 114 and 122, and the injection holes 113 and 123 are arranged on the same first end face 14 of the housing 1, and the first pole 112 and the information reading area 115 are arranged on the other first end face 14 of the housing 1. When the first pole 112, the second pole 121, the third pole 111, the explosion-proof valves 114 and 122, the information reading area 115, and the injection holes 113 and 123 are arranged on the same first end surface 14 of the shell 1, at this time, the first through hole 211, the second through hole 212, the third through hole 213, two fourth through holes 214, two fifth through holes 215 and the sixth through hole 216 are simultaneously provided on one insulating member 2, and no through holes are provided on the other insulating member 2. Alternatively, when the third pole 111, the second pole 121, the explosion-proof valves 114 and 122, and the injection holes 113 and 123 are arranged on the same first end surface 14 of the outer shell 1, and the first pole 112 and the information reading area 115 are arranged on the other first end surface 14 of the outer shell 1, at this time, a third through hole 213, a second through hole 212, two fourth through holes 214 and two fifth through holes 215 are simultaneously provided on one insulating member 2, and a first through hole 211 and a sixth through hole 216 are simultaneously provided on another insulating member 2.

[0053] In addition, the present application does not fix the positions of the explosion-proof valve 112 and the information reading area 115 on the specific housing 1, and those skilled in the art can select them as needed. For example, the explosion-proof valve 112 and the information reading area 115 can be set on the second housing 12. Alternatively, the explosion-proof valve 112 is set on the first housing 11, and the information reading area 115 is set on the second housing 12. Alternatively, the explosion-proof valve 112 is set on the second housing 12, and the information reading area 115 is set on the first housing 11.

[0054] In addition, in other preferred embodiments, the information reading area 115 is not necessarily provided, and those skilled in the art can select it as needed. When the information reading area 115 is not provided, the sixth through hole 216 is correspondingly not provided on the insulating member 2 .

[0055] It should be noted that the third pole 111 is a voltage sampling pole, or a temperature sampling pole, etc., which is mainly used to sample relevant information of the battery, and will not be described in detail here.

[0056] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.

[0057] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A battery, characterized in that: The battery comprises a shell and an insulating member, the shell comprises a first end surface, and the insulating member is fixedly connected to the first end surface; In the second direction, the insulating member includes a support block disposed at one end; The housing includes a connecting portion, the insulating member is provided with a groove, and the connecting portion is received in the groove.

2. The battery according to claim 1, characterized in that The housing further includes a second end surface adjacent to the first end surface, and the insulating member includes a bent portion that fits the second end surface.

3. The battery according to claim 1, characterized in that A glue layer is provided between the shell and the insulating member.

4. The battery according to claim 1, characterized in that The first end surface is provided with a first pole, and the insulating member is provided with a first through hole through which the first pole passes; and / or, The first end surface is provided with a second pole, and the insulating member is provided with a second through hole through which the second pole passes; and / or, The first end surface is provided with a third pole, and the insulating member is provided with a third through hole through which the third pole passes.

5. The battery according to claim 1, characterized in that The first end surface is provided with an explosion-proof valve, and the insulating member is provided with a fourth through hole opposite to the explosion-proof valve; and / or, The first end surface is provided with a liquid injection hole, and the insulating member is provided with a fifth through hole connected to the liquid injection hole; and / or, The first end surface is provided with an information reading area, and the insulating member is provided with a sixth through hole opposite to the information reading area.

6. The battery according to claim 1, characterized in that The housing is provided with an insulating film, and an edge of the insulating film is located between the first end surface and the insulating member.

7. The battery according to claim 1, characterized in that The shell includes a first shell, a partition and a second shell arranged in a first direction, the connecting part includes a first connecting part arranged on the first shell and a second connecting part arranged on the second shell, and the edges of the first connecting part, the second connecting part and the partition are accommodated in the groove.

8. The battery according to claim 7, characterized in that The battery also includes a first battery cell, a second battery cell and an electrical connector arranged on the partition, the first battery cell is located between the first shell and the partition, the second battery cell is located between the second shell and the partition, one end of the electrical connector is electrically connected to the first battery cell, and the other end of the electrical connector is electrically connected to the second battery cell.

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