Elastic supporting structure of internal electrode of nickel-hydrogen battery

Abstract

The invention discloses an elastic supporting structure of an internal electrode of a nickel-hydrogen battery. The elastic supporting structure comprises a shell; an electrode plate group is arranged in the shell; a first end plate and a second end plate are respectively arranged on two sides of the electrode plate group; a first limiting ring is arranged on one side, far away from the electrode plate group, of the first end plate; the first end plate abuts against the first limiting ring. A second limiting ring is arranged on one side, far away from the electrode plate group, of the second end plate; an elastic piece is arranged on the side, close to the second end plate, of the second limiting ring. The elastic piece is connected with the second end plate in an abutting mode. Bus bars are respectively arranged on the upper side and the lower side of the electrode plate group; external terminals are arranged on the left side and the right side of the shell; and the two external terminals are arranged in an up-down staggered manner and are respectively connected with the corresponding bus bars. Through cooperation of the first limiting ring, the second limiting ring, the first end plate, the second end plate and the elastic piece, the overall size and weight of the battery can be reduced under the condition that the energy density is not reduced.

Description

Technical Field

[0001] The invention relates to the technical field of batteries, and more particularly to an elastic supporting structure for internal electrodes of a nickel-hydrogen battery. Background Art

[0002] In recent years, with the accelerated construction of new energy systems, electrochemical energy storage technology has exploded, and technical routes are also flourishing. Among them, nickel-hydrogen batteries, as a new type of energy storage battery, have the advantages of long cycle life, no risk of fire or thermal runaway, flexible charging and discharging speed, no need for routine maintenance, good high and low temperature operation, low cost, no toxic substances, and 100% recycling. It can be used in energy storage application scenarios such as renewable energy distribution storage, grid peak and frequency regulation services, and building energy storage integration. It is particularly suitable for long-term energy storage and has broad prospects. It has become a "hot industry" in the field of new energy. Nickel-hydrogen batteries are a key research and development direction in the field of new energy. How to reduce the overall size and weight of the battery without reducing the energy density is a key research topic. Summary of the invention

[0003] In view of this, the present invention provides an elastic support structure for internal electrodes of a nickel-hydrogen battery, the purpose of which is to solve the problems existing in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A resilient support structure for internal electrodes of a nickel-hydrogen battery, comprising: an outer shell; an electrode plate group is arranged inside the outer shell; a first end plate and a second end plate are respectively arranged on both sides of the electrode plate group; a first limiting ring is arranged on the side of the first end plate away from the electrode plate group; the first end plate abuts against the first limiting ring; a second limiting ring is arranged on the side of the second end plate away from the electrode plate group; an elastic member is arranged on the side of the second limiting ring close to the second end plate; the elastic member abuts against the second end plate; bus bars are respectively arranged on the upper and lower sides of the electrode plate group; external terminals are arranged on the left and right sides of the outer shell; two external terminals are staggered up and down and are respectively connected to the corresponding bus bars.

[0006] Preferably, the outer shell includes an intermediate shell, a first end cover and a second end cover; the first end cover and the second end cover are respectively arranged on both sides of the intermediate shell; the first limiting ring is fixedly connected between the first end cover and the intermediate shell; the second limiting ring is fixedly connected between the second end cover and the intermediate shell.

[0007] Preferably, the outer side surfaces of the first end cover and the second end cover are both recessed inwards to form mounting grooves; and the external terminals are arranged in the corresponding mounting grooves.

[0008] Preferably, a cross-shaped first support frame is provided inside the first limiting ring; a first limiting block is provided on the side of the first end plate close to the first limiting ring; and a first limiting groove matched with the first limiting block is provided on the first support frame.

[0009] Preferably, the elastic member is a cross-shaped spring sheet; the spring sheet includes a middle circular sheet and four wings evenly distributed around the middle circular sheet; the middle circular sheet abuts against the middle of the second end plate; the four wings abut against the second limiting ring.

[0010] Preferably, a cross-shaped second support frame is provided inside the second limiting ring; a plurality of third limiting grooves are provided on the side of the second support frame close to the second end plate; the third limiting grooves are the same in number as the wing pieces and are arranged one-to-one; each of the wing pieces is clamped in the corresponding third limiting groove on the side away from the middle disc.

[0011] Preferably, a second limiting block is provided on a side of the middle disc close to the second end plate; a second limiting groove matched with the second limiting block is provided on the second end plate; and the second limiting block is clamped in the second limiting groove.

[0012] Compared with the prior art, the present invention achieves the following technical effects: the present invention can reduce the overall size and weight of the battery without reducing the energy density by cooperating with the first limiting ring, the second limiting ring, the first end plate, the second end plate and the elastic member. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of an elastic support structure for an internal electrode of a nickel-hydrogen battery according to the present invention;

[0014] Figure 2 is a schematic diagram of a first limiting ring;

[0015] Figure 3 is a schematic diagram of a second limiting ring;

[0016] In the figure: 1. outer shell; 101. intermediate shell; 102. first end cover; 103. second end cover; 2. electrode plate group; 3. first end plate; 4. second end plate; 5. first limiting ring; 6. second limiting ring; 7. bus bar; 8. external terminal; 9. mounting groove; 10. first support frame; 11. first limiting block; 12. first limiting groove; 13. spring sheet; 14. second support frame; 15. third limiting groove; 16. second limiting block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example

[0019] Reference Figure 1-3 As shown, the present invention discloses an elastic support structure for the internal electrode of a nickel-hydrogen battery, comprising: an outer shell 1; an electrode plate group 2 is arranged inside the outer shell 1; a first end plate 3 and a second end plate 4 are respectively arranged on both sides of the electrode plate group 2; a first limiting ring 5 is arranged on the side of the first end plate 3 away from the electrode plate group 2; the first end plate 3 abuts against the first limiting ring 5; a second limiting ring 6 is arranged on the side of the second end plate 4 away from the electrode plate group 2; an elastic member is arranged on the side of the second limiting ring 6 close to the second end plate 4; the elastic member abuts against the second end plate 4; bus bars 7 are respectively arranged on the upper and lower sides of the electrode plate group 2; external terminals 8 are arranged on the left and right sides of the outer shell 1; the two external terminals 8 are staggered up and down and are respectively connected to the corresponding bus bars 7; when in use, the electrode plate group 2 is clamped and fixed inside the outer shell 1 by cooperating with the first limiting ring, the second limiting ring, the first end plate, the second end plate and the elastic member.

[0020] In this embodiment, the shell 1 includes an intermediate shell 101, a first end cover 102 and a second end cover 103; the first end cover 102 and the second end cover 103 are respectively arranged on both sides of the intermediate shell 101; the first limiting ring 5 is fixedly connected between the first end cover 102 and the intermediate shell 101 by welding; the second limiting ring 6 is fixedly connected between the second end cover 103 and the intermediate shell 101 by welding.

[0021] In this embodiment, an annular first positioning ring is provided on both sides of the first limiting ring 5; a first positioning groove adapted to the first positioning ring is provided on the first end cover 102 and the intermediate shell 101; when in use, the first limiting ring 5 cooperates with the first positioning ring and the first positioning groove to realize rapid positioning and installation of the first end cover 102 and the intermediate shell 101.

[0022] In this embodiment, an annular second positioning ring is provided on both sides of the second limiting ring 6; a second positioning groove adapted to the second positioning ring is provided on the second end cover 103 and the intermediate shell 101; when in use, the second limiting ring 6 cooperates with the second positioning ring and the second positioning groove to realize rapid positioning and installation of the second end cover 103 and the intermediate shell 101.

[0023] In this embodiment, the outer side surfaces of the first end cover 102 and the second end cover 103 are both recessed inward to form mounting grooves 9; the two mounting grooves 9 are staggered up and down and offset from the central axis of the outer shell 1; the external terminal 8 is fixedly connected to the corresponding mounting groove 9, which can reduce the volume of the battery.

[0024] In this embodiment, a cross-shaped first support frame 10 is provided inside the first limiting ring 5; a first limiting block 11 is provided on the side of the first end plate 3 close to the first limiting ring 5; a first limiting groove 12 adapted to the first limiting block 11 is provided on the first support frame 10; the first limiting block 11 is inserted into the corresponding first limiting groove 12 to realize the rapid installation and positioning of the first limiting ring 5 and the first end plate 3.

[0025] In this embodiment, the elastic member is a cross-shaped spring sheet 13; the spring sheet 13 includes a middle circular sheet and four wing sheets evenly distributed around the middle circular sheet; the middle circular sheet abuts against the middle part of the second end plate 4 close to the second limiting weld 6; the four wing sheets abut against the second limiting ring 6 close to the second end plate 4.

[0026] In this embodiment, a cross-shaped second support frame 14 is provided inside the second limiting ring 6; four third limiting grooves 15 are opened on the side of the second support frame 14 close to the second end plate 4; the four third limiting grooves 15 are arranged one by one corresponding to the four wing pieces; each wing piece is clamped in the corresponding third limiting groove 15 on the side away from the middle disc and fixed by bolts.

[0027] In this embodiment, a second limiting block 16 is provided on one side of the middle disc close to the second end plate 4; a second limiting groove matched with the second limiting block 16 is provided on the second end plate 4; and the second limiting block 16 is snapped into the second limiting groove.

[0028] In this embodiment, the first support frame 10 and the second support frame 14 are staggered with the corresponding bus bars 7 to avoid mutual interference.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An elastic support structure for internal electrodes of a nickel-hydrogen battery, characterized in that: include: A shell (1); an electrode plate group (2) is arranged inside the shell (1); a first end plate (3) and a second end plate (4) are respectively arranged on both sides of the electrode plate group (2); a first limiting ring (5) is arranged on the side of the first end plate (3) away from the electrode plate group (2); the first end plate (3) abuts against the first limiting ring (5); a second limiting ring (6) is arranged on the side of the second end plate (4) away from the electrode plate group (2); an elastic member is arranged on the side of the second limiting ring (6) close to the second end plate (4); the elastic member abuts against the second end plate (4); bus bars (7) are respectively arranged on the upper and lower sides of the electrode plate group (2); external terminals (8) are arranged on the left and right sides of the shell (1); two external terminals (8) are arranged alternately up and down and are respectively connected to the corresponding bus bars (7).

2. The elastic support structure of the internal electrode of a nickel-hydrogen battery according to claim 1, characterized in that: The housing (1) comprises an intermediate shell (101), a first end cover (102) and a second end cover (103); the first end cover (102) and the second end cover (103) are respectively arranged on both sides of the intermediate shell (101); the first limiting ring (5) is fixedly connected between the first end cover (102) and the intermediate shell (101); and the second limiting ring (6) is fixedly connected between the second end cover (103) and the intermediate shell (101).

3. The elastic support structure of the internal electrode of a nickel-hydrogen battery according to claim 2, characterized in that: The outer side surfaces of the first end cover (102) and the second end cover (103) are both recessed inwards to form mounting grooves (9); the external terminals (8) are arranged in the corresponding mounting grooves (9).

4. The elastic support structure of the internal electrode of a nickel-hydrogen battery according to claim 1, characterized in that: A cross-shaped first support frame (10) is provided inside the first limiting ring (5); a first limiting block (11) is provided on the side of the first end plate (3) close to the first limiting ring (5); and a first limiting groove (12) adapted to the first limiting block (11) is provided on the first supporting frame (10).

5. The elastic support structure of the internal electrode of a nickel-hydrogen battery according to claim 1, characterized in that: The elastic member is a cross-shaped spring sheet (13); the spring sheet (13) comprises a middle circular sheet and four wing sheets evenly distributed around the middle circular sheet; the middle circular sheet abuts against the middle of the second end plate (4); the four wing sheets abut against the second limiting ring (6).

6. The elastic support structure of the internal electrode of a nickel-hydrogen battery according to claim 5, characterized in that: A cross-shaped second support frame (14) is provided inside the second limiting ring (6); a plurality of third limiting grooves (15) are provided on the side of the second supporting frame (14) close to the second end plate (4); the number of the third limiting grooves (15) is the same as that of the wing pieces, and they are arranged one by one; and each of the wing pieces is snap-fitted into the corresponding third limiting groove (15) on the side away from the middle disc.

7. The elastic support structure of the internal electrode of a nickel-hydrogen battery according to claim 5, characterized in that: A second limiting block (16) is provided on one side of the intermediate disc close to the second end plate (4); a second limiting groove matched with the second limiting block (16) is provided on the second end plate (4); and the second limiting block (16) is snap-fitted into the second limiting groove.

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