CN113708009A - Safety protection device of large-capacity battery pack - Google Patents
Safety protection device of large-capacity battery pack Download PDFInfo
- Publication number
- CN113708009A CN113708009A CN202111006418.XA CN202111006418A CN113708009A CN 113708009 A CN113708009 A CN 113708009A CN 202111006418 A CN202111006418 A CN 202111006418A CN 113708009 A CN113708009 A CN 113708009A
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- China
- Prior art keywords
- battery pack
- top cover
- tank body
- capacity battery
- protection device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
- H01M50/457—Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/112—Monobloc comprising multiple compartments
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to the technical field of battery pack protection, in particular to a safety protection device of a large-capacity battery pack, which comprises an inner tank body, a plurality of tank plates, an outer shell and an installation cavity, wherein the plurality of tank plates are arranged on the bottom wall of the inner tank body at equal intervals, electrolyte is filled in the inner tank body, an inner top cover is arranged on the inner tank body, a bus bar is arranged on the inner top cover, a plurality of electrode plate groups are arranged on the bottom end surface of the bus bar at equal intervals, a composite partition plate is arranged between every two adjacent electrode plate groups, a pole is arranged in the middle of the top end surface of the bus bar, and an outer top cover and a connecting strip are arranged on the outer shell in a sealing manner. According to the invention, the composite partition plate is arranged between the electrode plate groups of the battery pack and is formed by compounding the AGM plate and the lead layer, and the graphene layer is coated on the outer side of the lead layer, so that the heat conduction performance is greatly improved, the danger coefficients of fire and explosion are reduced, the use safety is greatly improved, and meanwhile, the graphene can also enhance the electricity storage rate of the electricity storage equipment.
Description
Technical Field
The invention relates to the technical field of battery pack protection, in particular to a safety protection device of a high-capacity battery pack.
Background
With the rapid development of electronic technology, a cylindrical lithium ion battery with high specific energy and high performance is widely applied, the battery has good performance and does not contain harmful substances, the battery is a green power supply, all the performances of the battery almost reach the best degree of the current battery, but the battery has high storage energy, uses organic electrolyte and has the danger of fire and explosion, so that the use danger coefficient is improved, and therefore, a safety protection device of a large-capacity battery pack is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a safety protection device of a large-capacity battery pack.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a safety arrangement of large capacity group battery, including interior cell body, frid, shell body and installation cavity, the upper portion of interior cell body is uncovered with the upper portion of shell body, the inside diapire equidistance of interior cell body is provided with a plurality of frid, and the internal packing of interior cell has appropriate amount electrolyte, sealed lid is equipped with interior top cap on the interior cell body, the bottom face equidistance of interior top cap is provided with a plurality of busbar, the bottom face equidistance of busbar is provided with a plurality of electrode polar plate group, be provided with composite baffle between per two adjacent electrode polar plate group, the middle part of busbar top face is provided with utmost point post, and utmost point post and interior top cap run through, sealed lid is equipped with outer top cap on the shell body, and the installation is fixed with the connecting strip between the relative one side of outer top cap and interior top cap.
Preferably, the electrode plate group comprises a positive resistance plate and a negative resistance plate, and the positive resistance plate and the negative resistance plate are arranged at intervals.
Preferably, the middle part of the outer top cover is provided with a safety valve, and the bottom end surface of the connecting strip arranged below the outer top cover is fixedly connected with the top end surface of the pole column through jacking.
Preferably, the inner wall of the inner groove body is equidistantly provided with clamping grooves, and the composite partition plates are respectively clamped and fixed in the clamping grooves.
Preferably, the composite separator comprises an AGM plate and a lead layer, and the outer wall of the lead layer is uniformly coated with a graphene layer.
Preferably, the outer shell body is penetrated through the installation cavity, and a controller is arranged between the side wall of the inner groove body and the inner wall of the installation cavity through an installation clamping plate.
Preferably, the one end and the connecting strip of controller pass through electric connection, and the other end of controller is connected with the external connection, and the lateral wall of external connection and installation cavity runs through.
The invention has the beneficial effects that:
according to the invention, the composite partition plate is arranged between the electrode plate groups of the battery pack and is formed by compounding the AGM plate and the lead layer, and the graphene layer is coated on the outer side of the lead layer, so that the heat conduction performance is greatly improved, the danger coefficients of fire and explosion are reduced, the use safety is greatly improved, and meanwhile, the graphene is further combined with an electronic element and an electronic device for use, so that the electricity storage rate of the electricity storage device can be enhanced, and the electricity storage performance is greatly improved.
Drawings
Fig. 1 is a schematic structural view of a safety protection device for a large capacity battery pack according to the present invention;
fig. 2 is an enlarged view of a safety device of a large capacity battery pack according to the present invention, shown in fig. 1;
fig. 3 is a sectional view of a composite separator in a safety device for a large capacity battery pack according to the present invention.
In the figure: 101 interior cell body, 102 frid, 2 draw-in grooves, 3 composite separators, 301AGM board, 302 graphite alkene layer, 303 lead layer, 4 shell bodys, 5 installation chambeies, 601 inner cover, 602 outer cover, 7 busbar, 8 electrode plate group, 9 relief valves, 10 utmost point post, 11 connecting strips, 12 installation splint, 13 controllers, 14 external connection lines, 15 electrolyte.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1-3, a safety protection device for a large-capacity battery pack comprises an inner tank body 101, trough plates 102, an outer shell 4 and a mounting cavity 5, wherein the upper parts of the inner tank body 101 and the outer shell 4 are both open, a plurality of trough plates 102 are arranged on the bottom wall of the inner part of the inner tank body 101 at equal intervals, a proper amount of electrolyte 15 is filled in the inner tank body 101, and an inner top cover 601 is arranged on the inner tank body 101 in a sealing manner;
the bottom end face of the inner top cover 601 is equidistantly provided with a plurality of busbars 7, the bottom end face of each busbar 7 is equidistantly provided with a plurality of electrode plate groups 8, each electrode plate group 8 comprises a positive resistance plate and a negative resistance plate, and the positive resistance plates and the negative resistance plates are arranged at intervals;
a composite partition plate 3 is arranged between every two adjacent electrode plate groups 8, the inner wall of the inner groove body 101 is provided with clamping grooves 2 at equal intervals, the composite partition plates 3 are respectively clamped and fixed in the clamping grooves 2, the clamping grooves 2 are arranged in the inner groove body 101, so that an operator can better conveniently insert and connect the composite partition plates 3, and the composite partition plates can be better conveniently detached by the operator during later maintenance, thereby greatly improving the assembly efficiency and the later maintenance efficiency;
the composite partition plate 3 comprises an AGM plate 301 and a lead layer 303, the outer wall of the lead layer 303 is uniformly coated with a graphene layer 302, the composite partition plate 3 is formed by compounding the AGM plate 301 and the lead layer 303, and the outer side of the lead layer 303 is also coated with the graphene layer 302, so that the heat conducting property is greatly improved, the danger coefficients of fire and explosion are reduced, and the use safety is greatly improved;
an electrode post 10 is arranged in the middle of the top end face of the busbar 7, the electrode post 10 penetrates through the inner top cover 601, an outer top cover 602 is arranged on the outer shell 4 in a sealing manner, a connecting strip 11 is fixedly installed between the outer top cover 602 and one side, opposite to the inner top cover 601, of the outer top cover 602, a safety valve 9 is arranged in the middle of the outer top cover 602, and the bottom end face of the connecting strip 11 arranged below the outer top cover 602 is fixedly connected with the top end face of the electrode post 10 in a jacking manner;
the outer shell 4 and the installation cavity 5 penetrate through, a controller 13 is arranged between the side wall of the inner groove body 101 and the inner wall of the installation cavity 5 through an installation clamping plate 12, one end of the controller 13 is electrically connected with the connecting strip 11, the other end of the controller 13 is connected with an external connection line 14, the external connection line 14 penetrates through the side wall of the installation cavity 15, and therefore an operator can assemble the battery pack conveniently.
In this embodiment, the clamping grooves 2 are equidistantly arranged on the bottom wall of the inner box 101, the composite partition plates 3 are sequentially inserted into the sliding grooves 2, then the bus bars 7 assembled with the electrode plate groups 8 are sequentially arranged between the groove plates 102 of the inner box 101, the composite partition plates 3 are all arranged between two adjacent electrode plate groups 8, each electrode plate group 8 comprises a positive resistance plate and a negative resistance plate, and the positive resistance plates and the negative resistance plates are arranged at intervals;
the composite partition plate 3 comprises an AGM plate 301 and a lead layer 303, the outer wall of the lead layer 303 is uniformly coated with a graphene layer 302, the composite partition plate 3 is formed by compounding the AGM plate 301 and the lead layer 303, and the outer side of the lead layer 303 is also coated with the graphene layer 302, so that the heat conducting property is greatly improved, the danger coefficients of fire and explosion are reduced, and the use safety is greatly improved;
because the resistivity of the graphene layer 302 is extremely low, electrons can move in the graphene layer with extremely high efficiency, so that the graphene has very good conductivity, and meanwhile, the graphene is further combined with electronic elements and electronic equipment for use, so that the electricity storage rate of electricity storage equipment can be enhanced, and the electricity storage performance is greatly improved;
furthermore, the outer shell 4 penetrates through the mounting cavity 5, a controller 13 is arranged between the side wall of the inner groove body 101 and the inner wall of the mounting cavity 5 through a mounting clamping plate 12, one end of the controller 13 is electrically connected with the connecting strip 11, the other end of the controller 13 is connected with an external connecting wire 14, and the external connecting wire 14 penetrates through the side wall of the mounting cavity 15, so that an operator can assemble the battery pack more conveniently;
set up composite baffle between the electrode polar plate group through at this group battery to this composite baffle forms for AGM board and lead layer complex, and graphite alkene layer still coats in the outside on lead layer, and then has improved thermal conductivity greatly, thereby has reduced the danger coefficient of catching fire and explosion, has improved the security of using greatly, and graphite alkene further combines the use with electronic component, electronic equipment simultaneously, can strengthen the accumulate rate of accumulate equipment, great improvement accumulate performance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A safety protection device of a large-capacity battery pack comprises an inner tank body (101), tank plates (102), an outer shell (4) and a mounting cavity (5), and is characterized in that the upper part of the inner tank body (101) and the upper part of the outer shell (4) are both open, a plurality of tank plates (102) are arranged on the bottom wall of the inner part of the inner tank body (101) at equal intervals, a proper amount of electrolyte (15) is filled in the inner tank body (101), an inner top cover (601) is arranged on the upper sealing cover of the inner tank body (101), a plurality of busbars (7) are arranged on the bottom end surface of the inner top cover (601) at equal intervals, a plurality of electrode plate groups (8) are arranged on the bottom end surface of each busbar (7) at equal intervals, a composite partition plate (3) is arranged between every two adjacent electrode plate groups (8), a pole (10) is arranged in the middle part of the top end surface of each busbar (7), and the pole (10) penetrates through the inner top cover (601), an outer top cover (602) is arranged on the outer shell (4) in a sealing way, and a connecting strip (11) is fixedly arranged between one side of the outer top cover (602) opposite to one side of the inner top cover (601).
2. A safety protection device for a large capacity battery pack according to claim 1, wherein said electrode plate group (8) comprises a positive electrode resistance plate and a negative electrode resistance plate, and the positive electrode resistance plate and the negative electrode resistance plate are spaced apart from each other.
3. The safety protection device for a large capacity battery pack according to claim 1, wherein the safety valve (9) is provided at the middle part of the outer cap (602), and the bottom end surface of the connecting bar (11) provided under the outer cap (602) is fixed to the top end surface of the terminal post (10) by press-fitting.
4. The safety protection device of a large-capacity battery pack as claimed in claim 1, wherein the inner wall of the inner tank (101) is equidistantly provided with the clamping grooves (2), and the composite partition plates (3) are respectively clamped and fixed in the clamping grooves (2).
5. A safety protection device of a large capacity battery pack according to claim 1, wherein the composite separator (3) comprises an AGM sheet (301) and a lead layer (303), and the outer wall of the lead layer (303) is uniformly coated with a graphene layer (302).
6. A safety guard for large capacity battery pack as claimed in claim 1, wherein the outer casing (4) is penetrated through the mounting chamber (5), and a controller (13) is provided between the side wall of the inner casing (101) and the inner wall of the mounting chamber (5) through a mounting clamp plate (12).
7. A safety protection device for a large capacity battery pack as claimed in claim 6, wherein one end of the controller (13) is electrically connected to the connection bar (11), the other end of the controller (13) is connected to the external connection wire (14), and the external connection wire (14) penetrates through the side wall of the mounting cavity (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111006418.XA CN113708009B (en) | 2021-08-30 | 2021-08-30 | Safety protection device of high-capacity battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111006418.XA CN113708009B (en) | 2021-08-30 | 2021-08-30 | Safety protection device of high-capacity battery pack |
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| CN113708009A true CN113708009A (en) | 2021-11-26 |
| CN113708009B CN113708009B (en) | 2023-05-12 |
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| CN202111006418.XA Active CN113708009B (en) | 2021-08-30 | 2021-08-30 | Safety protection device of high-capacity battery pack |
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| Publication number | Publication date |
|---|---|
| CN113708009B (en) | 2023-05-12 |
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