CN217641461U

CN217641461U - Novel electricity core structure

Info

Publication number: CN217641461U
Application number: CN202221421558.3U
Authority: CN
Inventors: 甘俊凡; 王浩
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-10-21
Anticipated expiration: 2032-06-08

Abstract

The utility model provides a novel electricity core structure belongs to battery electricity core technical field. This novel electricity core structure, which comprises a housin, the cavity has been seted up at the middle part in the casing, the cavity intussuseption is filled with the helium, casing one side upper end is equipped with the air inlet, be equipped with the sealing plug in the air inlet, the upper end is equipped with the insulation board in the casing, the casing top is equipped with the apron, be equipped with the insulating film between insulation board and the casing, ensured lithium iron phosphate battery's result of use, the insulating layer comprises the helium, helium low price has avoided manufacturing cost's increase, newly add insulating layer simple structure, the casing wholly aggravates not much and easy casting shaping.

Description

Novel battery cell structure

Technical Field

The utility model relates to a battery cell technical field, in particular to novel electricity core structure.

Background

The lithium iron phosphate battery has a series of unique advantages of high working voltage, high energy density, long cycle life, small self-discharge rate, no memory effect, environmental protection and the like, supports stepless expansion, is suitable for large-scale electric energy storage, and has good application prospects in the fields of safe grid connection of power generation of renewable energy power stations, peak shaving of power grids, distributed power stations, UPS power supplies, emergency power supply systems and the like.

Among the prior art, lithium iron phosphate battery electricity core is mostly blue membrane and aluminum hull as external protection, and blue membrane has certain thermal-insulated effect, and aluminum hull heat conduction is effectual, and lithium iron phosphate battery is not adapted to low temperature environment to when the temperature descends fast, lithium iron phosphate battery's result of use can receive serious influence, and the unable normal power supply is unfavorable for lithium iron phosphate battery's use.

Disclosure of Invention

The embodiment of the utility model provides a novel electricity core structure has added the insulating layer in the aluminum hull, can slow down the low temperature to the influence of lithium iron phosphate battery, newly adds insulating layer simple structure, aggravates and is not many and easy casting shaping. The technical scheme is as follows:

the embodiment of the utility model provides a novel electricity core structure, include: the casing, the cavity has been seted up at the middle part in the casing, the cavity intussuseption is filled with the helium, casing one side upper end is equipped with the air inlet, be equipped with the sealing plug in the air inlet, the upper end is equipped with the insulation board in the casing, the casing top is equipped with the apron, be equipped with the insulating film between insulation board and the casing.

Optionally, a polymer diaphragm is arranged in the middle below the insulating plate, an anode filler is filled at one side of the polymer diaphragm, a cathode filler is filled at the other side of the polymer diaphragm, an anode conducting strip is inserted in the anode filler, the upper end of the anode conducting strip penetrates through the insulating plate and is fixedly connected with an anode binding post, a cathode conducting strip is inserted in the cathode filler, the upper end of the cathode conducting strip penetrates through the insulating plate and is fixedly connected with a cathode binding post, and the upper ends of the anode binding post and the cathode binding post extend to the upper part of the cover plate.

Optionally, the positive electrode filler is a lithium iron phosphate filler.

Optionally, the negative electrode filler is a graphite filler.

Optionally, the sealing plug is a one-piece rubber block.

The embodiment of the utility model provides a beneficial effect that technical scheme brought includes at least:

this novel electricity core structure can be to the inside helium that injects into of cavity through the air inlet, and the sealing plug can seal the air inlet, and through the packing of helium, the heat conductivity of helium is lower for the casing, has certain thermal-insulated effect, and when battery outside air temperature descends, through the setting of helium, change that can effectual reduction electricity core inside temperature. This kind of electric core structure has added the insulating layer in the aluminum hull, can slow down the low temperature to the influence of lithium iron phosphate battery, has ensured lithium iron phosphate battery's result of use, and the insulating layer comprises the helium, and the helium low price has avoided manufacturing cost's increase, adds insulating layer simple structure newly, and the casing is whole aggravates and is not many and easy casting shaping.

Drawings

Fig. 1 is a schematic structural diagram of a novel battery cell structure provided by an embodiment of the present invention;

fig. 2 is a cross-sectional view of a cell structure provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a part a provided in an embodiment of the present invention;

the components in the figures are numbered as follows: 1 shell, 2 cavities, 3 insulating plates, 4 cover plates, 5 polymer diaphragms, 6 positive conducting strips, 7 positive terminals, 8 positive fillers, 9 negative conducting strips, 10 negative terminals, 11 negative fillers, 12 insulating films, 13 air inlets and 14 sealing plugs.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

In the correlation technique, lithium iron phosphate battery electricity core is mostly blue membrane and aluminum hull as the outer protection, and blue membrane has certain thermal-insulated effect, and aluminum hull heat conduction is effectual, and lithium iron phosphate battery is not suitable for low temperature environment to when the temperature descends fast, lithium iron phosphate battery's result of use can receive serious influence, and the unable normal power supply is unfavorable for lithium iron phosphate battery's use.

Fig. 1 is a schematic structural diagram of a novel battery cell structure provided by an embodiment of the present invention. Fig. 2 is a sectional view of a cell structure provided in the embodiment of the present invention. Fig. 3 is a schematic structural diagram of part a according to an embodiment of the present invention. As shown in fig. 1 to 3, by practice, the present applicant provides a novel cell structure including a case 1.

Cavity 2 has been seted up at the middle part in the casing 1, cavity 2's setting makes the inside cavity of casing 1, cavity 2 intussuseption is filled with the helium, the helium is colorless tasteless, incombustible gas, chemical property is inactive, do not combine with other element or compound under the usual state, through the filling of helium, the heat conductivity of helium is lower for casing 1, certain thermal-insulated effect has, when battery outside temperature descends, through the setting of helium, can the effectual change that reduces the inside temperature of electric core, casing 1 one side upper end is equipped with air inlet 13, can be to the inside helium that injects of cavity 2 through air inlet 13, be equipped with sealing plug 14 in the air inlet 13, sealing plug 14 can seal air inlet 13, the upper end is equipped with insulation board 3 in the casing 1, casing 1 top is equipped with apron 4, be equipped with insulating film 12 between insulation board 3 and the casing 1.

A polymer diaphragm 5 is arranged in the middle below the insulating plate 3, one side of the polymer diaphragm 5 is filled with an anode filler 8, the other side of the polymer diaphragm 5 is filled with a cathode filler 11, an anode conducting strip 6 is inserted in the anode filler 8, the upper end of the anode conducting strip 6 penetrates through the insulating plate 3 and is fixedly connected with an anode binding post 7, a cathode conducting strip 9 is inserted in the cathode filler 11, the upper end of the cathode conducting strip 9 penetrates through the insulating plate 3 and is fixedly connected with a cathode binding post 10, the upper ends of the anode binding post 7 and the cathode binding post 10 extend to the upper part of the cover plate 4, and when the battery cell is charged, lithium ions in the anode filler 8 are released out and pass through the polymer diaphragm 5 through electrolyte and enter the cathode filler 11; when the battery is discharged, lithium ions are extracted from the negative electrode filler 11, pass through the electrolyte, pass through the polymer separator 5, and return to the inside of the positive electrode filler 8.

Casing 1 is the metal aluminum hull, and the cross-sectional width of casing 1 is 3mm, and the metal aluminum hull has structural strength big, advantage such as the quality is light.

The cross-sectional width of the cavity 2 is 2mm.

The positive electrode filler 8 is a lithium iron phosphate filler.

The negative electrode filler 11 is a graphite filler.

The sealing plug 14 is an integral rubber block, which has certain elasticity and flexibility. So that the inlet port 13 can be well sealed by the elasticity of the sealing plug 14.

Can inject helium into cavity 2 through air inlet 13 inside, sealing plug 14 can seal air inlet 13, and helium is colorless tasteless, incombustible gas, and chemical property is inactive, does not combine with other element or compound under the normal condition, and through the packing of helium, the heat conductivity of helium is lower for casing 1, has certain thermal-insulated effect, when battery outside air temperature descends, through the setting of helium, can effectually reduce the change of electric core inside temperature.

When the battery cell is charged, lithium ions in the positive electrode filler 8 are removed, and the lithium ions pass through the polymer diaphragm 5 through the electrolyte and enter the negative electrode filler 11; when the battery is discharged, lithium ions are extracted from the negative electrode filler 11, pass through the electrolyte, pass through the polymer separator 5, and return to the inside of the positive electrode filler 8.

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item appearing in front of the word "comprising" or "comprises" includes the element or item listed after the word "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The above description is only an optional embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a novel electricity core structure which characterized in that: including casing (1), cavity (2) have been seted up at middle part in casing (1), cavity (2) intussuseption is filled with the helium, casing (1) one side upper end is equipped with air inlet (13), be equipped with sealing plug (14) in air inlet (13), upper end is equipped with insulation board (3) in casing (1), casing (1) top is equipped with apron (4), be equipped with between insulation board (3) and casing (1) insulating film (12).

2. The novel cell structure of claim 1, wherein: insulation board (3) below middle part is equipped with polymer diaphragm (5), polymer diaphragm (5) one side is filled with anodal filler (8), polymer diaphragm (5) opposite side is filled with negative filler (11), it has anodal conducting strip (6) to peg graft in anodal filler (8), insulation board (3) and anodal terminal (7) fixed connection are run through to anodal conducting strip (6) upper end, it has negative pole conducting strip (9) to peg graft in negative filler (11), insulation board (3) and negative terminal (10) fixed connection are run through to negative pole conducting strip (9) upper end, and anodal terminal (7) and negative terminal (10) upper end extend to apron (4) top.

3. The novel cell structure of claim 2, wherein: the positive electrode filler (8) is a lithium iron phosphate filler.

4. The novel cell structure of claim 2, wherein: the negative electrode filler (11) is a graphite filler.

5. The novel cell structure of claim 1, wherein: the sealing plug (14) is an integrated rubber block.