CN209766481U

CN209766481U - large-scale box type energy storage device

Info

Publication number: CN209766481U
Application number: CN201920665472.7U
Authority: CN
Inventors: 徐伟; 刘霞; 张宏燕; 徐培燕; 孙志华; 蒋永彬; 易杰芬
Original assignee: Nantong Asitong Electric Appliance Manufacturing Co Ltd
Current assignee: Nantong Asitong Electric Appliance Manufacturing Co Ltd
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2019-12-10
Anticipated expiration: 2029-05-09

Abstract

The utility model discloses a large box-type energy storage device, which comprises an outer box, wherein the outer box comprises a box body and a cover plate, and the upper part and the lower part of the cover plate are respectively provided with a positive electrode end and a negative electrode end; the positive electrode end is arranged on the cover plate through an outer gasket A, and the negative electrode end is arranged on the cover plate through an outer gasket B; the center of the positive electrode end and the center of the negative electrode end both recess inwards to form a recess part, and a current collector is arranged in the recess part; the current collector comprises a current conducting plate and a current conducting shaft, and the current conducting shaft is arranged at the front end of the current conducting plate; the conductive plate is positioned on the inner side of the cover plate; an inner gasket is arranged between the conductive plate and the cover plate; the front end of the conductive shaft is turned outwards to form a flange; an electrode assembly is arranged inside the box body; the utility model discloses an energy memory just, the negative pole end is in the same place with outer gasket, apron, interior gasket, flange, current conducting plate are integrated well for energy memory has good gas tightness, can prevent that liquid from leaking and moisture from energy memory invades energy memory.

Description

Large-scale box type energy storage device

Technical Field

The utility model relates to an energy memory especially relates to a large-scale box energy memory.

Background

The existing large box-type energy storage device is generally provided with an electrode assembly consisting of a positive plate and a negative plate, a separator is inserted between the positive plate and the negative plate, and the positive plate, the negative plate and electrolyte are hermetically packaged in a box body; the positive electrode end and the negative electrode end are electrically connected to the electrode component through current collectors, and the positive electrode end and the negative electrode end are installed on the box body.

The large box-type energy storage device requires good air tightness between the positive electrode end and the negative electrode end of the large box-type energy storage device and a current collector so as to prevent liquid from leaking from the energy storage device and prevent moisture from invading into the energy storage device, but the existing large box-type energy storage device has poor air tightness and cannot meet the requirements.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a large box-type energy storage device.

In order to solve the technical problem, the utility model discloses a technical scheme is: a large box-type energy storage device comprises an outer box, wherein the outer box comprises a box body and a cover plate, and the cover plate is arranged at the front end of the box body; the upper part and the lower part of the cover plate are respectively provided with a positive electrode end and a negative electrode end; the positive electrode end is arranged on the cover plate through an outer gasket A, and the negative electrode end is arranged on the cover plate through an outer gasket B; an explosion-proof valve is arranged between the positive electrode end and the negative electrode end and is arranged on the cover plate;

The center of the positive electrode end and the center of the negative electrode end both recess inwards to form a recess part, and a current collector is arranged in the recess part; the back wall of the depressed part is provided with an insertion hole;

the current collector comprises a current conducting plate and a current conducting shaft, and the current conducting shaft is arranged at the front end of the current conducting plate; the conductive shaft is inserted into the insertion hole, and the conductive plate is positioned on the inner side of the cover plate; an inner gasket is arranged between the conductive plate and the cover plate; the front end of the conductive shaft is turned outwards to form a flange;

a metal gasket is arranged between the conductive shaft flange of the current collector at the negative electrode end and the rear wall of the concave part;

An electrode assembly is arranged in the box body and comprises a positive plate, a negative plate, a separator, a positive plate and a negative plate; the positive plates, the negative plates, the separators, the positive plates and the negative plates are all multiple, the positive plates and the negative plates are alternately arranged, and the separators are sequentially arranged between the positive plates and the negative plates; the plurality of positive plates are respectively connected with the plurality of positive plates in a one-to-one correspondence manner, and the other ends of the plurality of positive plates are collected and then connected with the current conducting plate of the current collector at the positive end; the negative plates are connected with the negative plates in a one-to-one correspondence mode, and the other ends of the negative plates are connected with the current conducting plates of the current collectors at the negative ends after being collected.

the positive plate and the negative plate are both in a bent shape in the box body.

the separator is a sheet or membrane impregnated with an electrolyte solution.

The utility model discloses a large-scale box energy memory just, the negative pole end is in the same place with outer gasket, apron, interior gasket, flange, current conducting plate are integrated well, and the cooperation setting of this kind of structure makes energy memory have good gas tightness, can prevent that liquid from leaking and moisture invasion energy memory from energy memory.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a cross-sectional view B-B of fig. 2.

Fig. 4 is a partially enlarged view of the negative terminal in fig. 3.

Fig. 5 is a sectional view taken along line a-a of fig. 2.

Fig. 6 is a partially enlarged view of the positive terminal in fig. 5.

In the figure: 1. a box body; 2. a cover plate; 3. a positive terminal; 4. a negative terminal; 5. an outer gasket A; 6. an outer gasket B; 7. an explosion-proof valve; 8. a recessed portion; 9. an inner gasket; 10. a current collector; 11. a conductive plate; 12. a positive plate; 13. a negative plate; 14. a separator; 16. a negative plate; 17. a conductive shaft; 18. a flange; 19. a metal washer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, a large box-type energy storage device includes an outer box, the outer box includes a box body 1 and a cover plate 2, the cover plate 2 is disposed at the front end of the box body 1; the upper part and the lower part of the cover plate 2 are respectively provided with a positive electrode end 3 and a negative electrode end 4; the positive terminal 3 is arranged on the cover plate 2 through an outer gasket A5, and the negative terminal 4 is arranged on the cover plate 2 through an outer gasket B6; an explosion-proof valve 7 is arranged between the positive electrode end 3 and the negative electrode end 4, and the explosion-proof valve 7 is arranged on the cover plate 2;

the center of the positive electrode end 3 and the center of the negative electrode end 4 are both inwards sunken to form a sunken part 8, and a current collector 10 is arranged in the sunken part 8; the rear wall of the recess 8 is provided with an insertion hole;

As shown in fig. 4 to 6, the current collector 10 includes a conductive plate 11, a conductive shaft 17, the conductive shaft 17 being disposed at a front end of the conductive plate 11; the conductive shaft 17 is inserted into the insertion hole, and the conductive plate 11 is positioned on the inner side of the cover plate 2; an inner gasket 9 is arranged between the conductive plate 11 and the cover plate 2;

The positive terminal 3 (or the negative terminal 4) is well integrated together with outer gasket A5 (or outer gasket B6), apron 2, interior gasket 9, flange 18, current conducting plate 11, and the cooperation setting of this kind of structure makes the utility model discloses an energy storage device has good gas tightness, can prevent that liquid from leaking and moisture from energy storage device invades energy storage device.

The front end of the conductive shaft 17 is turned outwards to form a flange 18; a metal gasket 19 is arranged between the conductive shaft flange of the current collector 10 at the negative end 4 and the rear wall of the concave part, the metal gasket 19 is sleeved outside the conductive shaft to realize the mechanical connection and the electrical connection between the current collector 10 and the negative end, and the metal gasket 19 disperses the pressing force between the current collector 10 and the negative end and inhibits the deformation of the negative end 4.

As shown in fig. 3, an electrode assembly including a positive electrode plate 12, a negative electrode plate 13, a separator 14, a positive electrode tab, and a negative electrode tab 16 is disposed inside the case 1; the positive plates 12, the negative plates 13, the separators 14, the positive plates and the negative plates 16 are all multiple, the positive plates and the negative plates are alternately arranged, and the separators are sequentially arranged between the positive plates and the negative plates; the separator 14 is a sheet or film impregnated with an electrolytic solution, and the separator 14 serves to separate the positive electrode plate 12 and the negative electrode plate 13 from each other while holding the electrolytic solution between the positive electrode plate 12 and the negative electrode plate 13.

The plurality of positive plates are respectively connected with the plurality of positive plates in a one-to-one correspondence manner, and the other ends of the plurality of positive plates are collected and then connected with the current conducting plate of the current collector at the positive end; the negative plates are connected with the negative plates in a one-to-one correspondence mode, and the other ends of the negative plates are connected with the current conducting plates of the current collectors at the negative ends after being collected. The positive plate and the negative plate 16 are both curved in the case 1 for contending for the energy density of the energy storage device, and as shown in fig. 3 and 4, the negative plate 16 is curved in the case 1 so that the space occupied by the current path between the negative end 4 and the negative plate 13 is reduced.

the above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.

Claims

1. The utility model provides a large-scale box energy memory, includes the outer container, its characterized in that: the outer box comprises a box body (1) and a cover plate (2), wherein the cover plate (2) is arranged at the front end of the box body (1); the upper part and the lower part of the cover plate (2) are respectively provided with a positive electrode end (3) and a negative electrode end (4); the positive electrode end (3) is arranged on the cover plate (2) through an outer gasket A (5), and the negative electrode end (4) is arranged on the cover plate (2) through an outer gasket B (6); an explosion-proof valve (7) is arranged between the positive electrode end (3) and the negative electrode end (4), and the explosion-proof valve (7) is arranged on the cover plate (2);

The center of the positive electrode end (3) and the center of the negative electrode end (4) both recess inwards to form a recess part (8), and a current collector (10) is arranged in the recess part (8); the rear wall of the sunken part (8) is provided with an insertion hole;

The current collector (10) comprises a conductive plate (11) and a conductive shaft (17), wherein the conductive shaft (17) is arranged at the front end of the conductive plate (11); the conductive shaft (17) is inserted into the insertion hole, and the conductive plate (11) is positioned on the inner side of the cover plate (2); an inner gasket (9) is arranged between the conductive plate (11) and the cover plate (2); the front end of the conductive shaft (17) is turned outwards to form a flange (18);

A metal gasket (19) is arranged between the conductive shaft flange of the current collector (10) at the negative electrode end (4) and the rear wall of the concave part; an electrode assembly is arranged in the box body (1), and comprises a positive plate (12), a negative plate (13), a separator (14), a positive plate and a negative plate (16); the positive plates (12), the negative plates (13), the separators (14), the positive plates and the negative plates (16) are all multiple, the positive plates and the negative plates are alternately arranged, and the separators are sequentially arranged between the positive plates and the negative plates; the plurality of positive plates are respectively connected with the plurality of positive plates in a one-to-one correspondence manner, and the other ends of the plurality of positive plates are collected and then connected with the current conducting plate of the current collector at the positive end; the negative plates are connected with the negative plates in a one-to-one correspondence mode, and the other ends of the negative plates are connected with the current conducting plates of the current collectors at the negative ends after being collected.

2. The large box energy storage device of claim 1, wherein: the positive plate and the negative plate (16) are both in a bent shape in the box body (1).

3. the large box energy storage device of claim 1, wherein: the separator (14) is a sheet or membrane impregnated with an electrolyte solution.