Square battery structure of nickel-hydrogen battery

Abstract

The invention discloses a square battery structure of a nickel-hydrogen battery, and relates to the technical field of batteries. Comprising a battery pack and battery end plates arranged at the two ends of the battery pack, the battery pack is formed by sequentially and electrically connecting a plurality of rectangular battery blocks, and the two battery end plates are connected through a screw connecting assembly. The battery blocks are arranged to be of a rectangular structure, manufacturing is simpler, using is convenient and fast, the whole battery structure can be stably assembled by fixing the two battery end plates through the screw connecting assemblies, and assembling is convenient.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and specifically to a rectangular battery structure for nickel-metal hydride batteries. Background Technology

[0002] In recent years, with the accelerated construction of new energy systems, electrochemical energy storage technology has experienced explosive growth, and various technical routes have emerged. Among them, nickel-metal hydride batteries, as a new type of energy storage battery, have advantages such as long cycle life, no risk of fire or thermal runaway, flexible charging and discharging speed, no need for routine maintenance, good performance at high and low temperatures, low cost, no toxic substances, and 100% recyclability. They can be applied to energy storage scenarios such as renewable energy distribution and storage, grid peak shaving and frequency regulation services, and building-integrated energy storage. They are particularly suitable for long-term energy storage and have broad prospects, making them a "hot industry" in the new energy field.

[0003] Currently, most nickel-metal hydride batteries on the market use a circular structure. The circular shape requires high precision during manufacturing and has higher manufacturing costs. Therefore, it is necessary to provide a square battery structure for nickel-metal hydride batteries. Summary of the Invention

[0004] The main objective of this invention is to provide a rectangular battery structure for nickel-metal hydride batteries to solve the problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A nickel-metal hydride (NiMH) battery square battery structure includes a battery pack and battery end plates disposed at both ends of the battery pack. The battery pack is formed by sequentially connecting multiple rectangular battery blocks, and two battery end plates are connected by a screw connection assembly.

[0007] Furthermore, the rectangular battery block includes a positive electrode plate, a separator, and a negative electrode plate connected in sequence.

[0008] Furthermore, the screw connection assembly includes a screw and a nut, the screw passing through the two battery end plates in sequence, and the two ends of the screw being fixedly connected to the two battery end plates respectively by the nuts.

[0009] Furthermore, the battery end plate is provided with a through hole for the screw to pass through, and countersunk holes are provided on the two battery end plates on their opposite sides, with the countersunk holes and the through holes being coaxially arranged.

[0010] Furthermore, the screw connection assembly includes a screw and a nut. The battery end plate is provided with a through hole for the screw to pass through. The screw passes through the through holes of two battery end plates in sequence. One end of the screw is connected to a locking plate. One battery end plate is provided with a locking countersunk hole adapted to the locking plate. The locking plate is connected in the locking countersunk hole. The other end of the screw is fixedly connected to the adjacent battery end plate by a nut. The other battery end plate without a locking countersunk hole is provided with a countersunk hole. The countersunk hole is coaxial with the through hole.

[0011] Furthermore, a threaded annular groove is provided on the battery end plate with the countersunk hole. The threaded annular groove is located on the outer periphery of the countersunk hole. A positioning cylinder is threadedly connected to the threaded annular groove. The positioning cylinder is used to restrict the movement of the screw along its axial direction.

[0012] Furthermore, the rectangular battery block is provided with a liquid guide tube, which is used to fill the rectangular battery block with electrolyte.

[0013] Furthermore, the rectangular battery block is provided with a vent hole, which is used to fill or release hydrogen gas.

[0014] Furthermore, the battery end plate is provided with a rectangular groove that matches the end shape of the battery pack.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The battery block is designed with a rectangular structure, which makes it simpler to manufacture and easier to use.

[0017] The overall battery structure can be stably assembled by fixing the two battery end plates with screw connecting components, which is convenient for assembly.

[0018] The design of the vent is adapted to the hydrogen charging and discharging needs of nickel-metal hydride batteries, making it more practical. Attached Figure Description

[0019] Figure 1 This is a perspective view of the rectangular battery structure of the nickel-metal hydride battery in Example 1.

[0020] Figure 2 This is a schematic diagram of the battery end plate of the nickel-metal hydride battery square battery structure in Example 1.

[0021] Figure 3 This is a schematic diagram of the screw connection assembly of the nickel-metal hydride battery square battery structure in Example 1.

[0022] Figure 4 This is a perspective view of the rectangular battery structure of the nickel-metal hydride battery in Example 2.

[0023] Figure 5 This is a schematic diagram of the battery end plate of the nickel-metal hydride battery square battery structure in Example 2.

[0024] Figure 6 This is a schematic diagram of the screw connection assembly of the nickel-metal hydride battery square battery structure in Example 2.

[0025] Among them, 1-battery end plate; 11-through hole; 12-counterhead hole; 13-slotting countersunk hole; 2-rectangular battery block; 3-screw connection assembly; 31-screw; 32-nut; 33-slotting plate; 4-liquid guide tube; 5-vent hole. Detailed Implementation

[0026] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Example 1

[0028] Combine Figures 1-3 The present invention provides a square battery structure for nickel-metal hydride batteries, including a battery pack and battery end plates 1 disposed at both ends of the battery pack. The battery pack is formed by sequentially connecting multiple rectangular battery blocks 2. Each end of the two battery end plates 1 is provided with a trapezoidal boss, and the trapezoidal bosses of the two battery end plates 1 are connected by a screw connection assembly 3.

[0029] By setting the battery block to a rectangular structure, manufacturing becomes simpler and easier to use.

[0030] The rectangular battery block 2 includes a positive electrode plate, a separator, and a negative electrode plate connected in sequence.

[0031] The screw connection assembly 3 includes a screw 31 and a nut 32. The screw 31 passes through the two battery end plates 1 in sequence, and the two ends of the screw 31 are fixedly connected to the two battery end plates 1 respectively by the nuts 32.

[0032] The battery end plate 1 is provided with a through hole 11 for the screw 31 to pass through. The two battery end plates 1 are provided with countersunk holes 12 on their opposite sides. The countersunk holes 12 and the through holes are axially aligned with the through holes 11. The two battery end plates 1 can be stably fixed by screwing the nuts 32 into the two ends of the screw 31. The assembly of the battery structure only requires the nuts 32 and the screw 31 to cooperate, making the assembly simpler. In addition, the countersunk holes 12 can prevent the nuts 32 from being exposed on the outside of the battery end plates 1, making the device more adaptable during use and installation.

[0033] The rectangular battery block 2 is provided with a liquid guide tube 4, which is used to fill the rectangular battery block 2 with electrolyte.

[0034] The rectangular battery block 2 is provided with a vent 5, which is used to fill or release hydrogen gas. That is, when the battery structure is discharging, hydrogen gas is filled into the vent 5 for discharge, and when the battery structure is charging, hydrogen gas is released through the vent 5. This meets the actual use requirements of nickel-hydrogen gas and makes the battery structure more practical.

[0035] Example 2

[0036] Combine Figures 4-6 The present invention provides a square battery structure for nickel-metal hydride batteries, including a battery pack and battery end plates 1 disposed at both ends of the battery pack. The battery pack is formed by sequentially connecting multiple rectangular battery blocks 2. Each end of the two battery end plates 1 is provided with a trapezoidal boss, and the trapezoidal bosses of the two battery end plates 1 are connected by a screw connection assembly 3.

[0037] The rectangular battery block 2 includes a positive electrode plate, a separator, and a negative electrode plate connected in sequence.

[0038] The screw connection assembly 3 includes a screw 31 and a nut 32. The battery end plate 1 is provided with a through hole 11 for the screw 31 to pass through. The screw 31 passes through two through holes of the battery end plate 1 in sequence. One end of the screw 31 is connected to a locking plate 33. One battery end plate 1 is provided with a locking countersunk hole 13 adapted to the locking plate 33. The locking plate 33 is connected in the locking countersunk hole 13. The other end of the screw 31 is fixedly connected to the adjacent battery end plate 1 by the nut 32. The other battery end plate 1 without a locking countersunk hole 13 is provided with a countersunk hole 12. The countersunk hole 12 is coaxial with the through hole 11. The setting of the countersunk hole 12 can prevent the nut 32 from being exposed on the outside of the battery end plate 1. The setting of the locking countersunk hole 13 can prevent the locking plate 33 from being exposed on the outside of the battery end plate 1. The device has higher adaptability during use and installation.

[0039] When the square battery structure of the nickel-metal hydride battery is fixed, the locking plate 33 and the locking countersunk hole 13 lock into each other. Only the nut 32 at one end of the screw 31 needs to be turned to achieve a stable connection of the overall structure, which is more convenient in actual operation.

[0040] As an optimization, the diameter of the countersunk hole 12 is larger than the outer diameter of the nut 32.

[0041] A threaded annular groove is provided on the battery end plate 1 with a countersunk hole 13. The threaded annular groove is located on the outer periphery of the countersunk hole 13. A positioning cylinder is threadedly connected to the threaded annular groove. The positioning cylinder is used to restrict the movement of the screw 31 along its axial direction.

[0042] The rectangular battery block 2 is provided with a liquid guide tube 4, which is used to fill the rectangular battery block 2 with electrolyte.

[0043] The rectangular battery block 2 is provided with a vent 5, which is used to fill or release hydrogen gas. That is, when the battery structure is discharging, hydrogen gas is filled through the vent 5 for discharge. When the battery structure is charging, hydrogen gas is released through the vent 5. This meets the actual use requirements of nickel-hydrogen gas and makes the battery structure more practical.

[0044] As an optimization, the battery end plate 1 is provided with a rectangular groove that matches the end shape of the battery pack, which facilitates the alignment of the battery end plate 1 with the battery pack.

[0045] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A rectangular nickel-metal hydride battery structure, characterized in that, It includes a battery pack and battery end plates disposed at both ends of the battery pack. The battery pack is formed by multiple rectangular battery blocks connected in sequence, and two battery end plates are connected by a screw connection assembly.

2. The nickel-metal hydride battery square battery structure as described in claim 1, characterized in that, The rectangular battery block includes a positive electrode plate, a separator, and a negative electrode plate connected in sequence.

3. The nickel-metal hydride battery square battery structure as described in claim 1, characterized in that, The screw connection assembly includes a screw and a nut. The screw passes through the two battery end plates in sequence, and the two ends of the screw are fixedly connected to the two battery end plates respectively by the nuts.

4. The nickel-metal hydride battery square battery structure as described in claim 3, characterized in that, The battery end plate is provided with a through hole for the screw to pass through, and countersunk holes are provided on the two battery end plates on their opposite sides, with the countersunk holes and the through holes being coaxially arranged.

5. The nickel-metal hydride gas battery square battery structure as described in claim 1, characterized in that, The screw connection assembly includes a screw and a nut. The battery end plate is provided with a through hole for the screw to pass through. The screw passes through two through holes of the battery end plates in sequence. One end of the screw is connected to a locking plate. One battery end plate is provided with a locking countersunk hole adapted to the locking plate. The locking plate is connected in the locking countersunk hole. The other end of the screw is fixedly connected to the adjacent battery end plate by a nut. The other battery end plate without a locking countersunk hole is provided with a countersunk hole. The countersunk hole is coaxial with the through hole.

6. The nickel-metal hydride prismatic battery structure as described in claim 5, characterized in that, A threaded annular groove is provided on the battery end plate with a countersunk hole for positioning. The threaded annular groove is located on the outer periphery of the countersunk hole. A positioning cylinder is threadedly connected to the threaded annular groove. The positioning cylinder is used to restrict the movement of the screw along its axial direction.

7. The nickel-metal hydride battery square battery structure as described in claim 1, characterized in that, The rectangular battery block is provided with a liquid guide tube, which is used to fill the rectangular battery block with electrolyte.

8. The nickel-metal hydride battery square battery structure as described in claim 1, characterized in that, The rectangular battery block is provided with a gas guide hole, which is used to fill or release hydrogen gas.

9. The nickel-metal hydride battery square battery structure as described in claim 1, characterized in that, The battery end plate is provided with a rectangular groove that matches the end shape of the battery pack.

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