Battery and electric equipment

Abstract

The utility model provides a battery and electric equipment. The battery comprises a shell, a connecting piece and a cover plate, the connecting piece is used for connecting the shell and a tab, the cover plate is connected to the shell, and the cover plate is electrically connected with the connecting piece. According to the battery, the cover plate can be effectively prevented from being corroded, the service life of the cover plate is prolonged, and the stability of the battery is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to batteries and electrical equipment. Background Technology

[0002] Batteries are widely used in energy storage systems, transportation, and consumer electronics. A battery mainly consists of a casing and a cover plate connected to the casing.

[0003] In related technologies, the battery cover is prone to corrosion. Utility Model Content

[0004] Embodiments of this application provide a battery and electrical device that can improve the technical problem of easy corrosion of the cover plate.

[0005] In a first aspect, embodiments of this application provide a battery, comprising:

[0006] case;

[0007] Connector for connecting the housing and the electrode tab;

[0008] A cover plate is connected to the housing, and the cover plate is electrically connected to the connector.

[0009] In one embodiment, the battery further includes a conductive protrusion that is electrically connected to the cover plate.

[0010] In one embodiment, the battery further includes an encapsulation portion, at least a portion of which is located at the connection between the conductive protrusion and the cover plate.

[0011] In one embodiment, the conductive protrusion includes a first conductive portion, a second conductive portion, and a third conductive portion. The first conductive portion connects a first end of the second conductive portion to the connector. The second conductive portion abuts against the cover plate. The third conductive portion connects a second end of the second conductive portion to the connector.

[0012] In one embodiment, the first conductive portion and the third conductive portion are disposed at an angle relative to the second conductive portion.

[0013] In one embodiment, the first conductive portion and the third conductive portion have different tilt directions.

[0014] In one embodiment, an encapsulation portion is provided at the connection between the first conductive portion and the second conductive portion; and / or,

[0015] An encapsulation portion is provided at the connection between the second conductive portion and the third conductive portion; and / or,

[0016] An encapsulation portion is provided at the connection between the first conductive part and the connector; and / or...

[0017] An encapsulation portion is provided at the connection between the third conductive part and the connector.

[0018] In one embodiment, the conductive protrusion is made of the same material as the cover plate, and the conductive protrusion is fixedly connected to the cover plate by welding; or, the conductive protrusion is made of a different material from the cover plate, and the conductive protrusion is connected to the cover plate by at least one of the following methods: snap-fit, threaded connection, and interference fit.

[0019] In one embodiment, the length of the connection position between the conductive protrusion and the cover plate along the radial direction of the housing is J1, where J1 ≥ 1 mm.

[0020] In one embodiment, the height of the conductive protrusion along the axial direction of the housing is J2, where J2 ≤ 10 mm.

[0021] In one embodiment, the connector includes an electrode connector connected to the housing and a tab connector connected to the tab, wherein the electrode connector and / or the tab connector are provided with an encapsulation portion.

[0022] In one embodiment, the conductive protrusion is connected to the tab connector and protrudes from the tab connector.

[0023] In one embodiment, the encapsulation portion is provided at the connection between the conductive protrusion and the tab connector.

[0024] In one embodiment, the battery further includes a seal disposed at the connection between the cover and the housing.

[0025] Secondly, embodiments of this application provide an electrical device including the battery described above.

[0026] The beneficial effects of the embodiments of this application are as follows:

[0027] In the embodiments of this application, a connector is used to connect the housing and the tabs, enabling the battery to operate normally and simultaneously making the connector energized. By abutting the connector against the cover plate, the cover plate is also energized, thereby effectively preventing corrosion of the cover plate, extending its service life, and improving the stability of the battery. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the battery structure provided in an embodiment of this application;

[0030] Figure 2 This is one of the partial structural schematic diagrams of the battery provided in the embodiments of this application;

[0031] Figure 3 This is a second schematic diagram of a partial structure of a battery provided in an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the connector provided in an embodiment of this application. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0034] The following is combined Figures 1 to 4 This application describes the battery and electrical device.

[0035] According to the embodiments of the first aspect of this application, see [link / reference]. Figure 1 The battery includes a housing 1, a connector 2, and a cover plate 5. The connector 2 is used to connect the housing 1 and the electrode tabs. The cover plate 5 is connected to the housing 1 and is electrically connected to the connector 2.

[0036] According to the battery embodiment of this application, the casing 1 and the electrode tabs are connected by the connector 2, enabling the battery to operate normally and simultaneously making the connector 2 energized. By abutting the connector 2 against the cover plate 5, the cover plate 5 is also energized, thereby effectively preventing corrosion of the cover plate 5, extending its service life, and improving the stability of the battery.

[0037] In some examples, the cover plate 5 is insulated from the housing 1.

[0038] In some embodiments, see Figure 1 , Figure 2 and Figure 3The battery also includes a conductive protrusion 51, which is electrically connected to the cover plate 5.

[0039] It is understandable that the cover plate 5 is located at the end of the battery. By providing a conductive protrusion 51 at the connector 2, the conductive protrusion 51 protrudes towards the side of the cover plate 5, which facilitates the electrical connection between the connector 2 and the cover plate 5 through the conductive protrusion 51, thereby making the cover plate 5 energized and preventing the cover plate 5 from corroding.

[0040] In some examples, the conductive protrusion 51 is integrally formed with the cover plate 5.

[0041] In some embodiments, see Figure 2 The battery also includes an encapsulation part 3, at least a portion of which is located at the connection between the conductive protrusion 51 and the cover plate 5.

[0042] It is understandable that the encapsulation part 3 can isolate the connection between the conductive protrusion 51 and the cover plate 5, prevent the connection between the conductive protrusion 51 and the cover plate 5 from contacting other substances, prevent impurities from entering the connection between the conductive protrusion 51 and the cover plate 5, make the connection between the conductive protrusion 51 and the cover plate 5 less prone to corrosion, improve the connection stability between the conductive protrusion 51 and the cover plate 5, and allow the cover plate 5 to remain in a charged state.

[0043] In some examples, the encapsulation part 3 is, for example, an encapsulating adhesive, the material of which is polyurethane, epoxy resin, anaerobic adhesive, UV adhesive, acrylic, hot melt adhesive, etc., and the elastic modulus of the encapsulating adhesive is between 0.1 GPa and 6 GPa.

[0044] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The conductive protrusion 51 includes a first conductive part 511, a second conductive part 512 and a third conductive part 513. The first conductive part 511 connects the first end of the second conductive part 512 and the connector 2. The second conductive part 512 abuts against the cover plate 5. The third conductive part 513 connects the second end of the second conductive part 512 and the connector 2.

[0045] It is understandable that the second conductive part 512 abuts against the cover plate 5, and the second conductive part 512 is connected to the connector 2 through the first conductive part 511 and the third conductive part 513, so that the second conductive part 512 is energized, thereby energizing the cover plate 5 and improving the corrosion resistance of the cover plate 5.

[0046] It is understandable that the first conductive part 511 and the third conductive part 513 can support the second conductive part 512, making the contact between the second conductive part 512 and the cover plate 5 more stable.

[0047] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The first conductive part 511 and the third conductive part 513 are inclined relative to the second conductive part 512.

[0048] It is understandable that the first conductive part 511 and the third conductive part 513 are inclined to reduce the distance between the second conductive part 512 and the connector 2, and to reduce the overall height of the conductive protrusion 51 and the connector 2, which is beneficial to the miniaturization of the battery.

[0049] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The first conductive part 511 and the third conductive part 513 have different inclination directions.

[0050] It is understandable that the first conductive part 511, the second conductive part 512, the third conductive part 513 and the connector 2 can form a trapezoidal structure, which improves the structural stability of the conductive protrusion 51.

[0051] In some embodiments, see Figure 2 An encapsulation portion 3 is provided at the connection between the first conductive portion 511 and the second conductive portion 512.

[0052] It is understandable that by providing an encapsulation part 3 at the connection between the first conductive part 511 and the second conductive part 512, the encapsulation part 3 can prevent the connection between the first conductive part 511 and the second conductive part 512 from contacting other substances, making the connection between the first conductive part 511 and the second conductive part 512 less prone to corrosion, and improving the connection stability between the first conductive part 511 and the second conductive part 512.

[0053] In some embodiments, see Figure 2 An encapsulation portion 3 is provided at the connection between the second conductive portion 512 and the third conductive portion 513.

[0054] It is understood that by providing an encapsulation part 3 at the connection between the second conductive part 512 and the third conductive part 513, the encapsulation part 3 can prevent the connection between the second conductive part 512 and the third conductive part 513 from contacting other substances, making the connection between the second conductive part 512 and the third conductive part 513 less prone to corrosion, and improving the connection stability between the second conductive part 512 and the third conductive part 513.

[0055] In some embodiments, see Figure 2 An encapsulation part 3 is provided at the connection between the first conductive part 511 and the connector 2.

[0056] It is understandable that by providing an encapsulation part 3 at the connection between the first conductive part 511 and the connector 2, the encapsulation part 3 can prevent the connection between the first conductive part 511 and the connector 2 from contacting other substances, making the connection between the first conductive part 511 and the connector 2 less prone to corrosion, and improving the connection stability between the first conductive part 511 and the connector 2.

[0057] In some embodiments, see Figure 2 An encapsulation part 3 is provided at the connection between the third conductive part 513 and the connector 2.

[0058] It is understandable that by providing an encapsulation part 3 at the connection between the third conductive part 513 and the connector 2, the encapsulation part 3 can prevent the connection between the third conductive part 513 and the connector 2 from contacting other substances, making the connection between the third conductive part 513 and the connector 2 less prone to corrosion, and improving the connection stability between the third conductive part 513 and the connector 2.

[0059] In some embodiments, the conductive protrusion 51 is made of the same material as the cover plate 5, and the conductive protrusion 51 is fixedly connected to the cover plate 5 by welding.

[0060] It is understandable that when the conductive protrusion 51 and the cover plate 5 are made of the same material, the conductive protrusion 51 and the cover plate 5 can be directly fixed together by welding, which improves the stability and sealing of the connection between the conductive protrusion 51 and the cover plate 5.

[0061] In some embodiments, the conductive protrusion 51 and the cover plate 5 are made of different materials, and the conductive protrusion 51 is connected to the cover plate 5 by at least one of the following methods: snap-fit, threaded connection and interference fit.

[0062] It is understandable that when the conductive protrusion 51 and the cover plate 5 are made of different materials, it is difficult to fix the conductive protrusion 51 and the cover plate 5 together by welding. Therefore, in this embodiment, at least one of the following methods is used to fix the conductive protrusion 51 and the cover plate 5 together: snap-fit, threaded connection, and interference fit.

[0063] In some embodiments, along the radial direction of the housing 1, the length of the connection position between the conductive protrusion 51 and the cover plate 5 is J1, where J1 ≥ 1 mm.

[0064] It is understandable that if the length of the connection between the conductive protrusion 51 and the cover plate 5 is less than 1 mm, the connection stability between the conductive protrusion 51 and the cover plate 5 will be insufficient due to the short connection length, and the connection area between the conductive protrusion 51 and the cover plate 5 will be small, making it prone to excessively rapid temperature rise. Therefore, this application sets the length of the connection between the conductive protrusion 51 and the cover plate 5 to be greater than or equal to 1 mm, ensuring the connection stability between the conductive protrusion 51 and the cover plate 5, allowing the cover plate 5 to remain energized, and effectively preventing excessively rapid temperature rise at the connection point between the conductive protrusion 51 and the cover plate 5.

[0065] In some embodiments, the height of the conductive protrusion 51 along the axial direction of the housing 1 is J2, where J2 ≤ 10 mm.

[0066] Understandably, if the axial height of the conductive protrusion 51 is greater than 10mm, the conductive protrusion 51 will result in an excessively large gap between the cover plate 5 and the connector 2, which is detrimental to the miniaturization design of the battery. Therefore, this application sets the axial height of the conductive protrusion 51 to be less than or equal to 10mm, so that the conductive protrusion 51 can electrically connect the connector 2 and the cover plate 5, making the cover plate 5 energized, while also reducing the impact on the miniaturization design of the battery.

[0067] In some embodiments, see Figure 1 and Figure 4 The connector 2 includes an electrode connector 22 connected to the housing 1 and an electrode tab connector 23 connected to the electrode tab. An encapsulation part 3 is provided at the electrode connector 22 and / or the electrode tab connector 23.

[0068] It is understandable that the electrode connector 22 is connected to the housing 1, and the electrode tab connector 23 is connected to the electrode tab, so that the housing 1 and the electrode tab are connected by the electrode connector 22 and the electrode tab connector 23.

[0069] It is understandable that an encapsulation part 3 is provided at the electrode connector 22. The encapsulation part 3 can be located at the electrode connector 22, at the connection between the electrode connector 22 and the tab connector 23, or at the connection between the electrode connector 22 and the housing 1. In other words, the encapsulation part 3 can improve the corrosion resistance of the electrode connector 22, improve the corrosion resistance at the connection between the electrode connector 22 and the tab connector 23, making the connection between the electrode connector 22 and the tab connector 23 more stable, and also improve the corrosion resistance at the connection between the electrode connector 22 and the housing 1, making the connection between the electrode connector 22 and the housing 1 more stable.

[0070] In some embodiments, see Figure 1 and Figure 4The conductive protrusion 51 is connected to the tab connector 23, and the conductive protrusion 51 protrudes from the tab connector 23.

[0071] It is understandable that the conductive protrusion 51 protrudes towards the side of the cover plate 5 to facilitate the connection between the conductive protrusion 51 and the cover plate 5.

[0072] In some embodiments, see Figure 1 and Figure 2 The encapsulation part 3 is provided at the connection between the conductive protrusion 51 and the electrode connector 23.

[0073] Understandably, the encapsulation part 3 can improve the corrosion resistance at the connection between the conductive protrusion 51 and the electrode connector 23, making the connection between the conductive protrusion 51 and the electrode connector 23 more stable.

[0074] In some embodiments, the battery further includes a seal disposed at the connection between the cover plate 5 and the housing 1.

[0075] It is understandable that a seal is provided at the connection between the cover plate 5 and the housing 1, which can improve the sealing performance of the connection between the cover plate 5 and the housing 1.

[0076] According to an embodiment of the second aspect of this application, the electrical device includes the battery described above.

[0077] According to the embodiments of this application, the electrical device uses a connector 2 to connect the housing 1 and the electrode tabs, enabling the battery to operate normally and simultaneously making the connector 2 energized. By abutting the connector 2 against the cover plate 5, the cover plate 5 is also energized, thereby effectively preventing corrosion of the cover plate 5, extending its service life, and improving the stability of the battery.

[0078] It should be noted that electrical equipment can be vehicles, aircraft, or household appliances. It is important to note that the above examples are merely illustrative and do not impose any specific limitations on the types of electrical equipment used.

[0079] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery, characterized in that, include: case; Connector for connecting the housing and the electrode tab; A cover plate is connected to the housing, the cover plate is electrically connected to the connector, and the cover plate is insulated from the housing.

2. The battery according to claim 1, characterized in that, The battery also includes conductive protrusions that are electrically connected to the cover plate.

3. The battery according to claim 2, characterized in that, The battery also includes an encapsulation portion, at least a portion of which is located at the connection between the conductive protrusion and the cover plate.

4. The battery according to claim 2, characterized in that, The conductive protrusion includes a first conductive portion, a second conductive portion, and a third conductive portion. The first conductive portion connects the first end of the second conductive portion to the connector. The second conductive portion abuts against the cover plate. The third conductive portion connects the second end of the second conductive portion to the connector.

5. The battery according to claim 4, characterized in that, The first conductive portion and the third conductive portion are inclined relative to the second conductive portion.

6. The battery according to claim 5, characterized in that, The first conductive part and the third conductive part have different inclination directions.

7. The battery according to claim 4, characterized in that, An encapsulation portion is provided at the connection between the first conductive portion and the second conductive portion; and / or... An encapsulation portion is provided at the connection between the second conductive portion and the third conductive portion; and / or, An encapsulation portion is provided at the connection between the first conductive part and the connector; and / or... An encapsulation portion is provided at the connection between the third conductive part and the connector.

8. The battery according to claim 2, characterized in that, The conductive protrusion is made of the same material as the cover plate, and the conductive protrusion is fixedly connected to the cover plate by welding; or, the conductive protrusion is made of a different material from the cover plate, and the conductive protrusion is connected to the cover plate by at least one of the following methods: snap-fit, threaded connection, and interference fit.

9. The battery according to any one of claims 2 to 8, characterized in that, Along the radial direction of the housing, the length of the connection position between the conductive protrusion and the cover plate is J1, where J1 ≥ 1 mm.

10. The battery according to any one of claims 2 to 8, characterized in that, Along the axial direction of the housing, the height of the conductive protrusion is J2, where J2 ≤ 10 mm.

11. The battery according to any one of claims 2 to 8, characterized in that, The connector includes an electrode connector connected to the housing and an electrode tab connector connected to the tab, and an encapsulation portion is provided at the electrode connector and / or the electrode tab connector.

12. The battery according to claim 11, characterized in that, The conductive protrusion is connected to the electrode connector and protrudes from the electrode connector.

13. The battery according to claim 12, characterized in that, The encapsulation portion is provided at the connection between the conductive protrusion and the electrode connector.

14. The battery according to any one of claims 1 to 8, characterized in that, The battery also includes a seal located at the connection between the cover and the housing.

15. An electrical appliance, characterized in that, Includes the battery as described in any one of claims 1 to 14.

Images