Battery and electric equipment

Abstract

The utility model provides a battery and electric equipment. The battery comprises an insulating shell, a roll core and a charging and discharging connecting part, a sealing cavity is formed in the insulating shell, the roll core is arranged in the sealing cavity, the roll core is provided with a tab, the charging and discharging connecting part is connected to the insulating shell, at least part of the charging and discharging connecting part is exposed out of the space of the sealing cavity, and the charging and discharging connecting part is electrically connected with the tab. According to the battery, the insulation shell is used for sealing the roll core, the insulation performance of the battery is improved while the sealing performance is ensured, meanwhile, the tabs are directly and electrically connected with the charging and discharging connecting part, so that the battery can be charged and discharged through the charging and discharging connecting part, the structure of the battery is simplified, and the structural improvement of the battery is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery structure, in particular to a battery and an electric device. BACKGROUND

[0002] A battery is a device that converts chemical energy into electrical energy and is widely used in various electronic devices, vehicles, energy storage systems, and other fields. A battery is composed of one or more battery cells, each of which contains a positive electrode, a negative electrode, an electrolyte, and a separator.

[0003] The structure of the battery in the related art still needs to be improved. UTILITY MODEL CONTENT

[0004] Embodiments of the present application provide a battery and an electric device, which can improve the structure of the battery.

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

[0006] An insulating shell forms a sealed cavity;

[0007] A winding core is arranged in the sealed cavity, and the winding core has a tab;

[0008] A charge-discharge connection part is connected to the insulating shell and at least partially exposed to a space outside the sealed cavity, and the charge-discharge connection part is electrically connected to the tab.

[0009] In an embodiment, the charge-discharge connection part is sealingly connected to the insulating shell, a first end of the charge-discharge connection part is electrically connected to the tab, and a second end of the charge-discharge connection part penetrates the insulating shell.

[0010] In an embodiment, the second end of the charge-discharge connection part protrudes from the outer surface of the insulating shell; or,

[0011] The end surface of the second end of the charge-discharge connection part is flush with the outer surface of the insulating shell.

[0012] In an embodiment, the charge-discharge connection part is embedded in the insulating shell; or,

[0013] The insulating shell is provided with a connecting hole, the charge-discharge connection part penetrates the connecting hole, and the battery further comprises a sealing member arranged between the charge-discharge connection part and the hole wall of the connecting hole.

[0014] In an embodiment, the tab includes a positive tab and a negative tab, the charge-discharge connection part includes a positive connection part and a negative connection part, the positive tab is electrically connected to the positive connection part, the negative tab is electrically connected to the negative connection part, and the positive connection part and the negative connection part are arranged in a spaced manner.

[0015] In an embodiment, the insulating shell comprises a body and a cover plate, the cover plate is sealingly connected to the body, and the body and the cover plate surround to form the sealed cavity.

[0016] In an embodiment, the battery comprises a first connecting piece and a second connecting piece, the first connecting piece is arranged on the cover plate, and the second connecting piece is arranged on the body, and the first connecting piece and the second connecting piece are fixedly connected.

[0017] In an embodiment, the first connecting piece and the second connecting piece are metal pieces; and / or, the number of the first connecting pieces is at least two, the number of the second connecting pieces is at least two, and at least two first connecting pieces are connected to at least two second connecting pieces one by one.

[0018] In an embodiment, the first connecting piece is embedded in the cover plate; and / or, the second connecting piece is embedded in the body.

[0019] In an embodiment, the first connecting piece and the second connecting piece are both arranged apart from the winding core.

[0020] In an embodiment, the body is provided with a connecting column, the winding core is formed with a cavity, a first end of the connecting column is fixedly connected to an inner bottom wall of the body, a second end of the connecting column penetrates the cavity, the second end of the connecting column is provided with the second connecting piece, and the second connecting piece protrudes from the winding core.

[0021] In a second aspect, the embodiments of the present application provide a power-using device comprising the battery described above.

[0022] The embodiments of the present application have the following beneficial effects:

[0023] In the embodiments of the present application, the winding core is installed in the sealed cavity formed by the insulating shell, and the insulating performance of the battery can be improved due to the excellent insulating performance of the insulating shell. The charging and discharging connecting part and the tab are electrically connected, so that the battery can be charged and discharged through the charging and discharging connecting part, and the charging and discharging connecting part is at least partially exposed to the space outside the sealed cavity, which facilitates the connection of the charging and discharging connecting part with other devices and improves the charging and discharging convenience of the battery.

[0024] That is, the present application seals the winding core by using the insulating shell, improves the insulating performance of the battery while ensuring the sealing performance, and directly electrically connects the tab with the charging and discharging connecting part, so that the battery can be charged and discharged through the charging and discharging connecting part, simplifies the structure of the battery, and realizes the structural improvement of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description only some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor based on these drawings.

[0026] Figure 1 The structural schematic diagram of the battery provided for the embodiments of the present application is shown in the following figure.

[0027] Figure 2 The structural exploded schematic diagram of the battery provided for the embodiments of the present application is shown in the following figure.

[0028] Figure 3 The structural schematic diagram of the winding core provided for the embodiments of the present application is shown in the following figure.

[0029] Figure 4 The sectional view of the battery provided for the embodiments of the present application is shown in the following figure.

[0030] Figure 5 The structural schematic diagram of the battery provided for the embodiments of the present application is shown in the following figure. Figure 4 The structural enlarged schematic diagram of the position A in the above figure. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and specifically refer to the figure direction in the drawings; and "inner" and "outer" refer to the outline of the device.

[0032] The battery and the electric equipment of the present application will be described in the following with reference to the drawings. Figures 1 to 5 The battery and the electric equipment of the present application will be described in the following with reference to the drawings.

[0033] According to the embodiments of the first aspect of the present application, such as Figure 1 , Figure 2 and Figure 3 , the battery comprises an insulating shell 1, a winding core 2 and a charge-discharge connecting part 3, the insulating shell 1 is formed with a sealed cavity 11, the winding core 2 is arranged in the sealed cavity 11, the winding core 2 has a tab 21, the charge-discharge connecting part 3 is connected to the insulating shell 1 and at least partially exposed to the space outside the sealed cavity 11, and the charge-discharge connecting part 3 is electrically connected with the tab 21.

[0034] According to the battery of the embodiment of the application, the sealed cavity 11 formed by the insulating shell 1 is used to install the winding core 2, and the insulating performance of the battery can be improved due to the excellent insulating performance of the insulating shell 1. The charging and discharging connecting part 3 and the tab 21 are electrically connected, so that the battery can be charged and discharged through the charging and discharging connecting part 3, and the charging and discharging connecting part 3 is at least partially exposed to the space outside the sealed cavity 11, so that the charging and discharging connecting part 3 is convenient to connect with other equipment, and the charging and discharging convenience of the battery is improved.

[0035] That is, the application seals the winding core 2 by using the insulating shell 1, improves the insulating performance of the battery while ensuring the sealing performance, and directly electrically connects the tab 21 with the charging and discharging connecting part 3, so that the battery can be charged and discharged through the charging and discharging connecting part 3, simplifies the structure of the battery, and realizes the structural improvement of the battery.

[0036] It can be understood that the charging and discharging connecting part 3 can be arranged at any suitable position of the insulating shell 1.

[0037] For example, the other equipment is a charging equipment or a power consumption equipment.

[0038] In some examples, the insulating shell 1 is made of ceramic material or any other suitable insulating material.

[0039] In some examples, the charging and discharging connecting part 3 is a welding spot, a conductive column, a conductive terminal or any other suitable conductive structure.

[0040] In some embodiments, the charging and discharging connecting part 3 is sealingly connected to the insulating shell 1, the first end of the charging and discharging connecting part 3 is electrically connected to the tab 21, and the second end of the charging and discharging connecting part 3 penetrates the insulating shell 1.

[0041] It can be understood that the tab 21 is electrically connected to the charging and discharging connecting part 3 to realize the electrical connection between the winding core 2 and the charging and discharging connecting part 3. The charging and discharging connecting part 3 is sealingly connected to the insulating shell 1, which can effectively prevent the electrolyte in the sealed cavity 11 from flowing to the outside through the connection between the charging and discharging connecting part 3 and the insulating shell 1, and can also prevent other substances from the outside from entering the sealed cavity 11 through the connection between the charging and discharging connecting part 3 and the insulating shell 1, thereby ensuring the sealing performance of the battery.

[0042] It can be understood that the charging and discharging connecting part 3 is connected to the tab 21, so that the battery can be charged and discharged through the charging and discharging connecting part 3, and the second end of the charging and discharging connecting part 3 penetrates the insulating shell 1, so that the charging and discharging connecting part 3 is convenient to connect with other equipment, that is, the battery is convenient to charge and discharge.

[0043] In some embodiments, the second end of the charging and discharging connecting part 3 protrudes from the outer surface of the insulating shell 1.

[0044] It can be understood that the second end of the charging and discharging connecting part 3 protrudes from the outer surface of the insulating shell 1, facilitating the connection of the charging and discharging connecting part 3 and other devices, and improving the convenience of charging and discharging of the battery.

[0045] In some embodiments, the end surface of the second end of the charging and discharging connecting part 3 is flush with the outer surface of the insulating shell 1.

[0046] It can be understood that the charging and discharging connecting part 3 does not protrude from the outer surface of the insulating shell 1, which can avoid increasing the overall size of the battery and is conducive to the miniaturization design of the battery.

[0047] The second end of the charging and discharging connecting part 3 is provided in the insulating shell 1, and the end surface of the second end of the charging and discharging connecting part 3 is flush with the outer surface of the insulating shell 1, thereby ensuring the flatness of the surface of the battery, and other devices can be connected with the charging and discharging connecting part 3 at the outer surface of the insulating shell 1 without the need to extend into the insulating shell 1, thereby ensuring the convenience of connection of the charging and discharging connecting part 3 and other devices.

[0048] In some embodiments, the charging and discharging connecting part 3 is embedded in the insulating shell 1.

[0049] It can be understood that the charging and discharging connecting part 3 is connected with the insulating shell 1 in an embedded manner, ensuring the stability of the connection of the charging and discharging connecting part 3 and the insulating shell 1, and having good sealing between the charging and discharging connecting part 3 and the insulating shell 1.

[0050] In some embodiments, the insulating shell 1 is provided with a connecting hole, and the charging and discharging connecting part 3 is provided in the connecting hole; the battery further comprises a sealing member provided between the charging and discharging connecting part 3 and the hole wall of the connecting hole.

[0051] It can be understood that the connecting hole is provided in the insulating shell 1 to facilitate the charging and discharging connecting part 3 to pass through the insulating shell 1, thereby facilitating the connection of the charging and discharging connecting part 3 with the tab 21 in the sealed cavity 11 and other devices outside the sealed cavity 11.

[0052] It can be understood that the sealing member is provided between the charging and discharging connecting part 3 and the hole wall of the connecting hole, which can improve the sealing between the charging and discharging connecting part 3 and the hole wall of the connecting hole, so as to prevent the electrolyte in the sealed cavity 11 from flowing to the outside through the connection between the charging and discharging connecting part 3 and the hole wall of the connecting hole, and also prevent other substances from the outside from entering the sealed cavity 11 through the connection between the charging and discharging connecting part 3 and the hole wall of the connecting hole, thereby ensuring the sealing performance of the battery.

[0053] In some embodiments, as shown in FIG. 1, Figure 2 and Figure 3The positive and negative tabs 21 include a positive tab 211 and a negative tab 212, the charge and discharge connecting part 3 includes a positive connecting part 31 and a negative connecting part 32, the positive tab 211 is electrically connected to the positive connecting part 31, the negative tab 212 is electrically connected to the negative connecting part 32, and the positive connecting part 31 and the negative connecting part 32 are arranged at intervals.

[0054] It can be understood that arranging the positive connecting part 31 and the negative connecting part 32 at intervals can avoid the positive connecting part 31 and the negative connecting part 32 from being in contact, that is, can prevent the positive tab 211 and the negative tab 212 of the winding core 2 from being short-circuited, thereby reducing the short-circuit direction of the battery.

[0055] In some embodiments, such as Figure 2 and Figure 4 The insulating shell 1 includes a body 12 and a cover plate 13, the cover plate 13 is sealingly connected to the body 12, and the body 12 and the cover plate 13 surround to form a sealed cavity 11.

[0056] It can be understood that the winding core 2 is placed in the body 12, then the cover plate 13 and the body 12 are connected, and the cover plate 13 and the body 12 are sealingly connected, so that the body 12 and the cover plate 13 surround to form a sealed cavity 11, thereby achieving sealing of the winding core 2 and ensuring the sealing performance of the battery.

[0057] In some embodiments, such as Figure 2 , Figure 4 and Figure 5 The battery includes a first connecting piece 4 and a second connecting piece 5, the first connecting piece 4 is arranged on the cover plate 13, the second connecting piece 5 is arranged on the body 12, and the first connecting piece 4 and the second connecting piece 5 are fixedly connected.

[0058] It can be understood that the first connecting piece 4 is connected to the cover plate 13, the second connecting piece 5 is connected to the body 12, and the first connecting piece 4 and the second connecting piece 5 are fixedly connected, so that the cover plate 13 and the body 12 are fixedly connected together.

[0059] In some embodiments, the first connecting piece 4 and the second connecting piece 5 are metal pieces, which can improve the structural strength and connection strength of the first connecting piece 4 and the second connecting piece 5, and ensure that the first connecting piece 4 and the second connecting piece 5 can stably fixedly connect the body 12 and the cover plate 13.

[0060] Specifically, the first connecting piece 4 and the second connecting piece 5 are made of the same metal material, and the first connecting piece 4 and the second connecting piece 5 are fixedly connected by welding, thereby improving the connection stability of the first connecting piece 4 and the second connecting piece 5, and further improving the connection stability of the body 12 and the cover plate 13.

[0061] Specifically, the first connecting piece 4 and the second connecting piece 5 are made of different materials, and the first connecting piece 4 is fixedly connected with the second connecting piece 5 by at least one of clamping, threaded connection and interference fit. It can be understood that when the first connecting piece 4 and the second connecting piece 5 are made of different materials, it is difficult to use welding to fixedly connect the first connecting piece 4 and the second connecting piece 5 together. Therefore, at least one of clamping, threaded connection and interference fit is used to fixedly connect the first connecting piece 4 and the second connecting piece 5 together.

[0062] In some examples, the first connecting piece 4 and the second connecting piece 5 are, for example, annular structures. It can be understood that when the first connecting piece 4 and the second connecting piece 5 are both annular structures, the fixed connection surface of the first connecting piece 4 and the second connecting piece 5 is an annular surface, which increases the fixed connection area of the first connecting piece 4 and the second connecting piece 5, and makes the connection between the cover plate 13 and the body 12 more stable.

[0063] In some embodiments, the number of the first connecting piece 4 is at least two, and the number of the second connecting piece 5 is at least two, and at least two first connecting pieces 4 are connected with at least two second connecting pieces 5 one by one.

[0064] It can be understood that one of the first connecting pieces 4 and the corresponding second connecting piece 5 are fixedly connected, and the other first connecting piece 4 and the corresponding second connecting piece 5 are fixedly connected, that is, each first connecting piece 4 is fixedly connected with the corresponding second connecting piece 5, so that the cover plate 13 and the body 12 have at least two fixed connection positions, which can effectively improve the connection stability of the cover plate 13 and the body 12.

[0065] In some embodiments, the first connecting piece 4 is embedded in the cover plate 13; and / or, the second connecting piece 5 is embedded in the body 12.

[0066] It can be understood that the first connecting piece 4 is connected with the cover plate 13 by embedding, which improves the connection stability of the first connecting piece 4 and the cover plate 13, and ensures the sealing performance of the connection between the first connecting piece 4 and the cover plate 13, so as to prevent the electrolyte in the sealed cavity 11 from flowing to the outside through the connection between the first connecting piece 4 and the cover plate 13, and also prevent other substances from the outside from entering the sealed cavity 11 through the connection between the first connecting piece 4 and the cover plate 13, thereby ensuring the sealing performance of the battery.

[0067] It can be understood that the second connecting piece 5 is connected with the body 12 in an embedded manner, which improves the connection stability of the second connecting piece 5 and the body 12 and ensures the sealing performance of the connection between the second connecting piece 5 and the body 12, so as to prevent the electrolyte in the sealed cavity 11 from flowing to the outside through the connection between the second connecting piece 5 and the body 12, and also prevent other substances in the outside from entering the sealed cavity 11 through the connection between the second connecting piece 5 and the body 12, thereby ensuring the sealing performance of the battery.

[0068] In some embodiments, the first connecting piece 4 and the second connecting piece 5 are both arranged away from the winding core 2.

[0069] It can be understood that the first connecting piece 4 and the winding core 2 are arranged away from each other, which can prevent the first connecting piece 4 from pressing the winding core 2. Meanwhile, when the first connecting piece 4 is made of metal, the first connecting piece 4 and the winding core 2 are arranged away from each other, which can avoid the electrical connection between the winding core 2 and the first connecting piece 4, thereby ensuring the insulation performance of the battery.

[0070] It can be understood that the second connecting piece 5 and the winding core 2 are arranged away from each other, which can prevent the second connecting piece 5 from pressing the winding core 2. Meanwhile, when the second connecting piece 5 is made of metal, the second connecting piece 5 and the winding core 2 are arranged away from each other, which can avoid the electrical connection between the winding core 2 and the second connecting piece 5, thereby ensuring the insulation performance of the battery.

[0071] In some embodiments, as shown in Figs. 1 to 3, Figure 2 , Figure 4 and Figure 5 , the body 12 is provided with a connecting column 121, the winding core 2 is formed with a cavity 22, a first end of the connecting column 121 is fixedly connected to the inner bottom wall of the body 12, a second end of the connecting column 121 penetrates the cavity 22, the second end of the connecting column 121 is provided with the second connecting piece 5, and the second connecting piece 5 protrudes from the winding core 2.

[0072] It can be understood that the winding core 2 is sleeved on the connecting column 121, and the connecting column 121 can limit and fix the winding core 2, thereby improving the stability of the winding core 2.

[0073] It can be understood that the second connecting piece 5 is supported by the second end of the connecting column 121, which facilitates the arrangement of the second connecting piece 5 and enables the cover plate 13 to be fixedly connected with the connecting column 121. Meanwhile, since the second connecting piece 5 protrudes from the winding core 2, the second connecting piece 5 can avoid pressing the winding core 2, and when the second connecting piece 5 is made of metal, the winding core 2 and the second connecting piece 5 can avoid being electrically connected, thereby ensuring the insulation performance of the battery.

[0074] In some embodiments, the battery has a circular structure or an elliptical structure.

[0075] It can be understood that the battery is designed as a circular ring structure or an elliptical structure, so that the battery can be suitable for special installation environments such as a circular ring.

[0076] It can be understood that the battery structure in the related art is mostly cylindrical or square, and it is difficult to be suitable for installation environments such as a circular ring structure. The battery is designed as a circular ring structure or an elliptical structure in the present application, so that the battery can be suitable for installation environments such as a circular ring or an ellipse.

[0077] According to the embodiment of the second aspect of the present application, the electric device includes the battery described above.

[0078] According to the electric device of the embodiment of the present application, the sealing cavity 11 is formed by the insulating shell 1, and the winding core 2 is installed in the sealing cavity 11. Since the insulating performance of the insulating shell 1 is excellent, the insulating performance of the battery can be improved. The charging and discharging connecting part 3 and the tab 21 are electrically connected, so that the battery can be charged and discharged through the charging and discharging connecting part 3, and the charging and discharging connecting part 3 is at least partially exposed to the space outside the sealing cavity 11, so that the charging and discharging connecting part 3 is convenient to connect with other devices, and the charging and discharging convenience of the battery is improved.

[0079] That is, the present application seals the winding core 2 by using the insulating shell 1, which improves the insulating performance of the battery while ensuring the sealing performance. At the same time, the tab 21 is directly electrically connected with the charging and discharging connecting part 3, so that the battery can be charged and discharged through the charging and discharging connecting part 3, which simplifies the structure of the battery and realizes the structural improvement of the battery.

[0080] It should be noted that the electric device can be a vehicle, can be an energy storage power supply, can be a consumer electronic device, can be a medical device, can be a smart city, can be an aircraft, and can be a household appliance. It should be noted that the foregoing is only an example of the electric device, and does not specially limit the electric device.

[0081] The embodiments of the present application are described in detail above, and the principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed; in view of the above, the content of the description should not be understood as a limitation of the present application.

Claims

1. A battery, characterized by, The battery comprises: an insulating shell, which forms a sealed cavity, the insulating shell comprising a body and a cover plate, the cover plate being sealingly connected to the body, the body and the cover plate surrounding the sealed cavity, the battery comprising a first connecting piece and a second connecting piece, the first connecting piece being arranged on the cover plate, the second connecting piece being arranged on the body, the first connecting piece and the second connecting piece being fixedly connected; a winding core, which is arranged in the sealed cavity, the winding core having a tab; a charging and discharging connecting part, which is connected to the insulating shell and at least partially exposed to a space outside the sealed cavity, the charging and discharging connecting part being electrically connected to the tab.

2. The battery of claim 1, wherein, The charging and discharging connecting part is sealingly connected to the insulating shell, a first end of the charging and discharging connecting part being electrically connected to the tab, a second end of the charging and discharging connecting part being arranged through the insulating shell.

3. The battery of claim 2, wherein, The second end of the charging and discharging connecting part protrudes from an outer surface of the insulating shell; or, an end surface of the second end of the charging and discharging connecting part is flush with the outer surface of the insulating shell.

4. The battery according to any one of claims 1 to 3, characterized in that, The charging and discharging connecting part is embedded in the insulating shell; or, The insulating shell is provided with a connecting hole, the charging and discharging connecting part is arranged through the connecting hole, and the battery further comprises a sealing member, which is arranged between the charging and discharging connecting part and a hole wall of the connecting hole.

5. The battery according to any one of claims 1 to 3, characterized in that, The tab comprises a positive tab and a negative tab, the charging and discharging connecting part comprises a positive connecting part and a negative connecting part, the positive tab is electrically connected to the positive connecting part, the negative tab is electrically connected to the negative connecting part, and the positive connecting part and the negative connecting part are arranged in a spaced manner.

6. The battery according to any one of claims 1 to 3, characterized in that, The first connecting piece and the second connecting piece are metal pieces; and / or, the number of the first connecting pieces is at least two, the number of the second connecting pieces is at least two, and at least two first connecting pieces are connected to at least two second connecting pieces in a one-to-one correspondence.

7. The battery according to any one of claims 1 to 3, characterized in that, The first connecting piece is embedded in the cover plate; and / or, the second connecting piece is embedded in the body.

8. The battery according to any one of claims 1 to 3, characterized in that, The first connecting piece and the second connecting piece are both arranged in a spaced manner with the winding core.

9. The battery according to any one of claims 1 to 3, characterized in that, The body is provided with a connecting column, the winding core forms a cavity, a first end of the connecting column is fixedly connected to an inner bottom wall of the body, a second end of the connecting column is arranged through the cavity, the second end of the connecting column is provided with the second connecting piece, and the second connecting piece protrudes from the winding core.

10. An electric device, characterized by The battery comprises the battery as claimed in any one of claims 1 to 9.

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