Battery

Abstract

The utility model provides a battery, relates to the technical field of batteries, and aims to optimize the structure of the battery to a certain extent and avoid the problems that a supporting component moves towards the direction close to an anti-explosion valve in a shell, the anti-explosion valve is blocked for exhausting, the shell is torn, and even the battery explodes. The battery provided by the utility model comprises a shell, a pole group and a supporting component, the pole group and the supporting component are both arranged in the shell, and the supporting component is located between the pole group and the shell; a limiting part is formed in the position, corresponding to the supporting component, of the interior of the shell and abuts against the supporting component so as to limit the position of the supporting component in the shell.

Description

Technical Field

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

[0002] During use or transportation, the battery may experience thermal runaway due to improper operation or collision. When in thermal runaway, the temperature inside the battery shell can rise to 400°C. Since most structures inside the battery shell cannot withstand the high temperature of 400°C, they will melt during thermal runaway. Once the structure used to support and isolate the pole group melts, the pole group will move toward the explosion-proof valve, blocking the exhaust space of the explosion-proof valve.

[0003] In order to avoid the movement of the pole group in the thermal runaway state, a high temperature resistant separator can be added between the shell and the pole group. Even if the problem in the shell reaches 400°C, it can still be kept between the shell and the pole group.

[0004] However, in most cases the separator is in a free state and can only be positioned by the compression and friction between the shell and the pole group, which makes it easy for the separator to move inside the shell. Once the separator moves to the position of the explosion-proof valve, it will block the exhaust space of the explosion-proof valve.

[0005] Therefore, there is an urgent need to provide a battery to solve the problems existing in the prior art to a certain extent. Utility Model Content

[0006] The utility model aims to provide a battery to optimize the battery structure to a certain extent, so as to avoid the support member from moving in the shell toward the explosion-proof valve, blocking the exhaust of the explosion-proof valve, causing the shell to tear and even the battery to explode.

[0007] The utility model provides a battery, comprising a shell, an electrode group and a support member; the electrode group and the support member are both arranged in the shell, and the support member is located between the electrode group and the shell; a limiting portion is formed inside the shell corresponding to the position of the support member, and the limiting portion abuts against the support member to limit the position of the support member in the shell.

[0008] The battery provided by the utility model further comprises an explosion-proof valve, wherein the explosion-proof valve is arranged on the housing, the support member corresponds to the explosion-proof valve, and the support member and the explosion-proof valve are arranged at a distance.

[0009] Specifically, a matching portion is formed on the support member at a position corresponding to the limiting portion, and the limiting portion is plugged into the matching portion.

[0010] Further, the limiting portion is a positioning protrusion, the matching portion is a positioning socket, and the positioning protrusion can be inserted into the positioning socket to limit the position of the supporting member in the shell.

[0011] Furthermore, there are one or more limiting parts, and the matching parts are arranged in a one-to-one correspondence with the limiting parts. The height of the limiting parts is A, and the range is between 0.5mm-3mm.

[0012] Furthermore, the cross-section of the limiting portion is rectangular, and the length of the limiting portion is B, the width is C, the length B ≥ 1mm, and the width C ≥ 1mm; the shape of the matching portion is compatible with the shape of the limiting portion, and the length of the matching portion is D, the width is E, the length D of the matching portion and the width C of the limiting portion satisfy 2C≤D≤40C, and the width E of the matching portion and the width C of the limiting portion satisfy 1.5C≤E≤8C.

[0013] Furthermore, the thickness of the support member is G, and the thickness G of the support member and the height A of the limiting portion satisfy 1.1A≤G≤3A; the width of the support member is F, the width of the shell is H, and the width F of the support member and the width H of the shell satisfy 0.5H≤F≤0.8H.

[0014] Wherein, the supporting member is made of a material that is resistant to high temperature and electrolyte corrosion.

[0015] Specifically, the battery provided by the utility model further includes an end plate, the end plate extends along the width direction of the shell, and one end of the supporting member is connected to one end of the end plate.

[0016] Furthermore, the end plate and the supporting member are injection molded or separately arranged, and when the supporting member and the end plate are separately arranged, an adhesive layer is provided between the supporting member and the end plate or the supporting member and the end plate are detachably connected by fasteners.

[0017] Compared with the prior art, the battery provided by the utility model has the following advantages:

[0018] The battery provided by the utility model comprises a shell, an electrode group and a support member; the electrode group and the support member are both arranged in the shell, and the support member is located between the electrode group and the shell; a limiting portion is formed inside the shell corresponding to the position of the support member, and the limiting portion abuts against the support member to limit the position of the support member in the shell.

[0019] From this analysis, it can be seen that by providing a supporting member between the shell and the pole group, the shell and the pole group can be separated, so that the pole group can be stably supported in the event of thermal runaway, and to a certain extent, the problem of the pole group moving toward the direction close to the explosion-proof valve and reducing or even blocking the exhaust space of the explosion-proof valve due to the high temperature in the shell melting the structure supporting the pole group can be avoided.

[0020] By forming a limiting portion at a position corresponding to the supporting member in the shell and enabling the limiting portion to abut against the supporting member, the position of the supporting member in the shell can be stably limited, thereby avoiding the problem of the supporting member moving in the shell due to the shaking of the entire battery, thereby reducing or even blocking the exhaust space of the explosion-proof valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a battery housing provided in an embodiment of the utility model;

[0023] Figure 2 A schematic structural diagram of a support structure in a battery provided in an embodiment of the utility model.

[0024] In the figure: 1-shell; 101-limiting part; 2-supporting member; 201-matching part; 3-explosion-proof valve. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0030] For ease of description, spatial relative terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the drawings. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0031] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0032] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0033] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection required by the present application.

[0034] like Figure 1 Combination Figure 2 As shown, the utility model provides a battery, including a shell 1, a pole group and a support member 2; the pole group and the support member 2 are both arranged in the shell 1, and the support member 2 is located between the pole group and the shell 1; a limiting portion 101 is formed inside the shell 1 corresponding to the position of the support member 2, and the limiting portion 101 abuts against the support member 2 to limit the position of the support member 2 in the shell 1.

[0035] Compared with the prior art, the battery provided by the utility model has the following advantages:

[0036] The battery provided by the utility model can separate the shell 1 and the electrode group by arranging a support member 2 between the shell 1 and the electrode group, so that the electrode group can be stably supported in the event of thermal runaway, and to a certain extent avoid the problem that the high temperature in the shell 1 melts the structure supporting the electrode group, causing the electrode group to move toward the direction close to the explosion-proof valve 3, thereby reducing or even blocking the exhaust space of the explosion-proof valve 3.

[0037] By forming a limiting portion 101 in the shell 1 at a position corresponding to the support member 2 and enabling the limiting portion 101 to abut against the support member 2, the position of the support member 2 in the shell 1 can be stably limited, thereby preventing the support member 2 from moving in the shell 1 due to the shaking of the entire battery, thereby reducing or even blocking the exhaust space of the explosion-proof valve 3.

[0038] Alternatively, if Figure 1 Combination Figure 2 As shown, the battery provided by the utility model further includes an explosion-proof valve 3, which is arranged on the housing 1, and the support member 2 corresponds to the explosion-proof valve 3, and the support member 2 and the explosion-proof valve 3 are arranged at a distance.

[0039] It can be understood that the present application can provide a stable exhaust and pressure relief structure for the battery in the thermal runaway stage by arranging the explosion-proof valve 3 on the shell 1, and by making the support member 2 correspond to the explosion-proof valve 3 and arranging the support member 2 and the explosion-proof valve 3 at a distance, it can not only provide sufficient pressure relief and exhaust space for the explosion-proof valve 3, but also provide a stable supporting force for the electrode group when thermal runaway occurs, thereby ensuring the stability and safety of the overall battery and reducing the risk of explosion.

[0040] Alternatively, if Figure 2 As shown, the supporting member 2 in the present application is formed with a matching portion 201 at a position corresponding to the limiting portion 101 , and the limiting portion 101 is plugged into the matching portion 201 .

[0041] By forming a matching portion 201 at a position of the support member 2 corresponding to the limiting portion 101, and by plugging the limiting portion 101 into the matching portion 201, a stable fit between the support member 2 and the shell 1 can be achieved, thereby reducing the risk of the support member 2 moving inside the shell 1 during the use or transportation of the battery to a certain extent.

[0042] Preferably, if Figure 1 Combination Figure 2 As shown, the limiting portion 101 in the present application is a positioning protrusion, and the matching portion 201 is a positioning socket. The positioning protrusion can be inserted into the positioning socket to limit the position of the supporting member 2 in the shell 1.

[0043] By making the limiting portion 101 a positioning protrusion and the matching portion 201 a positioning socket, the support member 2 and the shell 1 can be quickly and accurately connected through the insertion between the positioning protrusion and the positioning socket, and the movement of the support member 2 in the shell 1 can be avoided to a certain extent.

[0044] It can be understood that the positioning protrusion in the present application can be a cylinder, a rectangle or other three-dimensional protrusion structure. Correspondingly, the shape of the positioning socket in the present application is compatible with the shape of the positioning protrusion, so that the positioning protrusion can limit the support member 2 to a certain extent.

[0045] Optionally, there are one or more limiting parts 101 in the present application, and the matching parts 201 are arranged in a one-to-one correspondence with the limiting parts 101. The height of the limiting parts 101 is A, and the range is between 0.5mm-3mm.

[0046] The limiting part 101 in the present application can be one or more, and accordingly, the position and number of the matching part 201 can correspond to the limiting part 101. Since the limiting part 101 in the present application does not support the electrode group, the height range of the limiting part 101 is between 0.5mm and 3mm.

[0047] Preferably, if Figure 1 Combination Figure 2 As shown, the cross-section of the limiting portion 101 in the present application is rectangular, and the length of the limiting portion 101 is B, the width is C, the length B ≥ 1mm, and the width C ≥ 1mm; the shape of the matching portion 201 is compatible with the shape of the limiting portion 101, and the length of the matching portion 201 is D, the width is E, the length D of the matching portion 201 and the width C of the limiting portion 101 satisfy 2C≤D≤40C, and the width E of the matching portion 201 and the width C of the limiting portion 101 satisfy 1.5C≤E≤8C.

[0048] Alternatively, if Figure 1 Combination Figure 2 As shown, the thickness of the support member 2 in the present application is G, and the thickness G of the support member 2 and the height A of the limiting portion 101 satisfy 1.1A≤G≤3A; the width of the support member 2 is F, the width of the shell 1 is H, and the width F of the support member 2 and the width H of the shell 1 satisfy 0.5H≤F≤0.8H.

[0049] Since a positioning hole for accommodating the positioning protrusion needs to be formed on the support member 2, the overall thickness of the support member 2 needs to be greater than the height of the limiting portion 101. Therefore, by making the thickness G of the support member 2 satisfy 1.1A≤G≤3A, it is possible to accommodate the limiting portion 101 and to avoid, to a certain extent, the problem of an increase in the size of the overall battery due to the excessive thickness of the support member 2.

[0050] Accordingly, since the support member 2 needs to be arranged in the shell 1, by making the width F of the support member 2 satisfy 0.5H≤F≤0.8H, the support member 2 can be stably arranged in the shell 1 and avoid movement along the width direction of the shell 1 to a certain extent.

[0051] Preferably, the support member 2 in the present application is made of a high-temperature resistant and electrolyte corrosion-resistant material. The high-temperature resistant and electrolyte corrosion-resistant material in the present application can be an aluminum alloy or a stainless steel material. By making the support member 2 made of a high-temperature resistant and electrolyte corrosion-resistant material, it can not only withstand the high temperature environment during thermal runaway, but also withstand the corrosion of the electrolyte filled in the shell 1 under normal conditions, thereby ensuring stable support for the electrode group.

[0052] Optionally, the battery provided by the present invention further includes an end plate, which extends along the width direction of the shell 1, and one end of the support member 2 is connected to one end of the end plate.

[0053] By connecting the support member 2 provided in the present application with the end plate, when the end plate is not melted, the end plate can limit the support member 2. When the end plate is melted, the support member 2 can be limited by the limiting portion 101, thereby further improving the position fixation of the support member 2 in the shell 1.

[0054] Optionally, the end plate and the support member 2 in the present application are injection molded or separately arranged, and when the support member 2 and the end plate are separately arranged, an adhesive layer is provided between the support member 2 and the end plate or the support member 2 and the end plate are detachably connected by fasteners.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery, characterized in that: It includes a shell, a pole group and a supporting member; The pole group and the support member are both arranged in the shell, and the support member is located between the pole group and the shell; A limiting portion is formed inside the shell corresponding to the position of the supporting member, and the limiting portion abuts against the supporting member to limit the position of the supporting member inside the shell.

2. The battery according to claim 1, characterized in that It also includes an explosion-proof valve, which is arranged on the shell, and the supporting member corresponds to the explosion-proof valve, and the supporting member is spaced apart from the explosion-proof valve.

3. The battery according to claim 1, characterized in that The supporting member is formed with a matching portion at a position corresponding to the limiting portion, and the limiting portion is plugged into the matching portion.

4. The battery according to claim 3, characterized in that The limiting portion is a positioning protrusion, and the matching portion is a positioning socket. The positioning protrusion can be inserted into the positioning socket to limit the position of the supporting member in the shell.

5. The battery according to claim 3, characterized in that There are one or more limiting parts, and the matching parts are arranged in a one-to-one correspondence with the limiting parts. The height of the limiting parts is A, and the range is between 0.5mm-3mm.

6. The battery according to claim 5, characterized in that The cross section of the limiting portion is rectangular, and the length of the limiting portion is B, the width is C, the length B ≥ 1 mm, and the width C ≥ 1 mm; The shape of the matching part is compatible with the shape of the limiting part, and the length of the matching part is D, the width is E, the length D of the matching part and the width C of the limiting part satisfy 2C≤D≤40C, and the width E of the matching part and the width C of the limiting part satisfy 1.5C≤E≤8C.

7. The battery according to claim 5, characterized in that The thickness of the support member is G, and the thickness G of the support member and the height A of the limiting portion satisfy 1.1A≤G≤3A; The width of the supporting member is F, the width of the shell is H, and the width F of the supporting member and the width H of the shell satisfy 0.5H≤F≤0.8H.

8. The battery according to claim 1, characterized in that The supporting member is made of a material that is resistant to high temperature and electrolyte corrosion.

9. The battery according to claim 1, characterized in that An end plate is also included, the end plate extends along the width direction of the shell, and one end of the supporting member is connected to one end of the end plate.

10. The battery according to claim 9, characterized in that The end plate and the supporting member are injection-molded or separately arranged, and when the supporting member and the end plate are separately arranged, a glue layer is provided between the supporting member and the end plate or the supporting member and the end plate are detachably connected by fasteners.

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