CN-122026023-A - Battery device, maintenance method thereof, energy storage device, energy storage system and charging network

Abstract

The application is applicable to the technical field of batteries and provides a battery device, a maintenance method thereof, an energy storage device, an energy storage system and a charging network, wherein the battery device comprises a box body, wherein the box body is provided with a mounting port; the battery cell assembly is accommodated in the box body and comprises a plurality of battery cells which are electrically connected with each other; the battery device comprises a box body, an electric structure, a fuse, the battery device and the battery device, wherein the electric structure is detachably connected to the box body and covered on an installation opening, the fuse is electrically connected to a circuit in which a plurality of battery cells are mutually and electrically connected and/or to a circuit in which a plurality of battery cells are input and output, the fuse is arranged at a position in the box body corresponding to the installation opening, the installation opening is formed in the box body so that the electric structure can be connected with other structures in the box body through the installation opening, and meanwhile, the fuse is arranged at the installation opening so that the fuse can be replaced only by detaching the electric structure and exposing the installation opening.

Inventors

• FAN LINQIANG
• Gao Chenkang
• LIU YUANTAO

Assignees

• 宁德时代新能源科技股份有限公司

Dates

Publication Date

20260512

Application Date

20241112

Claims (20)

1. 1. A battery device, characterized by comprising: The box body is provided with a mounting port; the battery cell assembly is accommodated in the box body and comprises a plurality of battery cells which are electrically connected with each other; The electric structure is detachably connected to the box body and covered on the mounting port, and the electric structure is configured to collect state information of the battery unit; A fuse electrically connected in a circuit in which a plurality of the battery cells are electrically connected to each other and/or in a circuit in which input and output of the electrical structure are electrically connected, the fuse being configured to be able to cut off the respective circuits; the fuse is arranged at a position in the box body corresponding to the mounting opening.
2. 2. The battery device of claim 1, wherein the fuse includes a base and a melt, the base being connected to the housing, the melt being removably connected to the base; the fuse further comprises a first cover detachably connected to the base, and the first cover covers at least part of the melt.
3. 3. A battery device according to claim 2, wherein the melt is provided on a side of the base facing the mounting opening, and/or At least part of the first cover body is arranged on one side of the base, which faces the mounting opening.
4. 4. A battery device according to claim 2 or 3, wherein the base is provided with a first bayonet; The first cover body comprises a first main body part and a first clamping body movably connected to the first main body part, the first main body part covers at least part of the melt, and the first clamping body is configured to move relative to the first main body part so as to be inserted into or withdrawn from the first bayonet.
5. 5. The battery device according to claim 4, wherein the first main body portion is provided with a first connecting portion having elasticity, and the first clamping body is provided on the first connecting portion; the first card body can be inserted into the first bayonet under the action of the first connecting part.
6. 6. The battery device according to claim 5, wherein the number of the first connecting portions is at least two and is respectively disposed on two opposite sides of the first main body portion, and at least part of the first connecting portions on two sides of the first main body portion can be deformed toward each other so that the corresponding first card body is withdrawn from the first bayonet.
7. 7. A battery device according to claim 5 or 6, wherein the base is provided with a chute, and at least part of the first connecting portion is accommodated in the chute and is movable relative to the chute; the first connecting part is propped against at least one inner wall of the chute.
8. 8. A battery device according to any one of claims 4-7, wherein the base is further provided with a first platform; The first cover body further comprises a supporting part connected to the first main body part, and the supporting part is propped against the first bearing platform; the first cover body further comprises a reinforcing rib, one side of the reinforcing rib is connected to the supporting portion, and the other side of the reinforcing rib is connected to the first main body portion.
9. 9. A battery device according to any one of claims 2 to 8, wherein the fuse further comprises a controller provided on the first cover.
10. 10. The battery device according to claim 9, wherein the fuse further comprises a second cap and a second cap connected to the first cap, the second cap having a receiving slot thereon, the second cap being detachably connected to the second cap and covering an opening side of the receiving slot; The controller is accommodated in the accommodating groove.
11. 11. The battery device of claim 10, wherein the second cover comprises a second body portion, and the second body portion is provided with a second bayonet; the second clamping body is arranged on the second bearing platform and is configured to move relative to the second bearing platform so as to insert into or withdraw from the second bayonet.
12. 12. The battery device according to claim 11, wherein the second bearing platform is provided with a second elastic connecting part, and the second clamping body is arranged on the second connecting part; The second card body can be inserted into the second bayonet under the action of the second connecting part.
13. 13. A battery device according to claim 11 or 12, wherein there are at least two of said second bayonets, at least two of said second bayonets being provided on a peripheral side of said second body portion and on different sides of said second body portion; the second clamping bodies are located on different sides of the second bearing platform and are matched with different second bayonets.
14. 14. A battery arrangement according to any one of claims 1-13, wherein the electrical structure includes a condition monitoring component.
15. 15. A method of repairing a battery device, characterized by being applied to the battery device according to any one of claims 1 to 14; the maintenance method comprises the following steps: detaching the electrical structure from the housing and exposing the mounting opening; maintaining the fuse; and installing the electrical structure on the box body and closing the installation opening.
16. 16. The method of claim 15, wherein the fuse includes a base and a melt, the base is connected to the housing, the melt is detachably connected to the base, the fuse further includes a first cover detachably connected to the base, and the first cover covers at least a portion of the melt; In the step of repairing the fuse, comprising: Removing the first cover from the base; replacing or repairing the melt; And installing the first cover body on the base.
17. 17. The method of repairing of claim 16, wherein the fuse further comprises a controller disposed on the base; in the step of repairing the fuse, further comprising: Disconnecting a wire harness electrically connected with the controller; the controller is replaced or serviced.
18. 18. The method of claim 17, wherein the fuse further comprises a second cap and a second cap, the second cap being coupled to the first cap, the controller being disposed on the second cap, the second cap being removably coupled to the second cap and covering at least a portion of the controller; in the step of repairing the fuse, further comprising: Removing the second cover from the second bearing platform; Replacing or repairing the controller; And installing the second cover body on the second bearing platform.
19. 19. An energy storage device comprising a battery device according to any one of claims 1-14 for storing or providing electrical energy.
20. 20. An energy storage system comprising the energy storage device of claim 19 and a power conversion device for electrically connecting the power generation device and the energy storage device.

Description

Battery device, maintenance method thereof, energy storage device, energy storage system and charging network Technical Field The present application relates to the field of battery technologies, and in particular, to a battery device, a maintenance method thereof, an energy storage device, an energy storage system, and a charging network. Background Currently, the battery device is more widely used in view of the development of market situation. The battery device is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, as well as a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of battery devices, the market demand of the battery devices is also continuously expanding. At present, when maintaining and changing the electrical structure or other structures inside the battery device, the top cover of the box body of the battery device needs to be taken down, and the disassembling work of the top cover of the battery device is more complicated, so that the replacement process of the internal structure of the battery device is too complicated, and the efficiency is low. Disclosure of Invention In view of the above problems, the application provides a battery device, a maintenance method thereof, an energy storage device, an energy storage system and a charging network, which can alleviate the problem of complicated process of replacing the internal structure of the battery device at present. In a first aspect, an embodiment of the present application provides a battery device, including: The battery pack comprises a box body, a battery unit assembly, an electric structure, a fuse and a fuse, wherein the box body is provided with an installation opening, the battery unit assembly is accommodated in the box body and comprises a plurality of battery units which are electrically connected with each other, the electric structure is detachably connected to the box body and covers the installation opening, the electric structure is configured to be used for collecting state information of the battery units, the fuse is electrically connected to a circuit in which the plurality of battery units are electrically connected with each other and/or an input-output circuit of the electric structure, the fuse is configured to be capable of cutting off corresponding circuits, and the fuse is arranged at a position corresponding to the installation opening in the box body. In the technical scheme of the embodiment, the mounting opening is formed in the box body, the electric structure is arranged at the mounting opening so that the electric structure can be connected with other structures in the box body through the mounting opening, meanwhile, the fuse is arranged at the mounting opening and is opposite to the electric structure, so that the fuse can be replaced only by disassembling the electric structure and exposing the mounting opening, the replacement process of the fuse is simplified, and the replacement efficiency of the fuse is improved. In some embodiments, the fuse includes a base and a melt, the base is connected to the housing, the melt is detachably connected to the base, the fuse further includes a first cover detachably connected to the base, and the first cover covers at least a portion of the melt. In the technical scheme of the embodiment, at least part of the melt is covered by the first cover body, so that the risk of short circuit between the melt and other structures in the box body is reduced, the risk possibly caused by mistaken touch of the melt by a worker is reduced, and the first cover body is detachably connected to the base, so that the worker can conveniently take down the first cover body and replace the melt. In some embodiments, the melt is disposed on a side of the base facing the mounting opening, and/or at least a portion of the first cover is disposed on a side of the base facing the mounting opening. In the technical scheme of the embodiment, at least part of the melt and/or the first cover body is arranged on one side of the base, which faces the mounting opening, and after the electric structure is disassembled, the melt and/or the first cover body directly faces the mounting opening, so that the melt and/or the first cover body can be better and conveniently disassembled and mounted by a worker. In some embodiments, the base is provided with a first bayonet, the first cover comprises a first main body part and a first clamping body movably connected to the first main body part, the first main body part covers at least part of the melt, and the first clamping body is configured to move relative to the first main body part so as to be inserted into or withdrawn from the first bayonet. The technical scheme