CN112736324A - Take laminate polymer battery system of liquid cooling - Google Patents
Take laminate polymer battery system of liquid cooling Download PDFInfo
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- CN112736324A CN112736324A CN202110060525.4A CN202110060525A CN112736324A CN 112736324 A CN112736324 A CN 112736324A CN 202110060525 A CN202110060525 A CN 202110060525A CN 112736324 A CN112736324 A CN 112736324A
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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
- H01M10/61—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
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- 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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the cells
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a soft package battery system with liquid cooling, which comprises a battery body and a battery box, wherein the battery body is provided with a liquid inlet and a liquid outlet; the battery body comprises a plurality of battery cell modules, and the battery body is placed in the battery box; mounting gaps are formed between every two adjacent battery cell modules; a liquid cooling assembly is fixed on the battery body; the liquid cooling assembly includes: the bottom cold plate and the side cold plates are provided with a plurality of side cold plates; the side cold plates are inserted into the installation gap, so that two side faces of the battery cell module are respectively attached to the second heat-conducting silica gel of the adjacent side cold plate, and the bottom face of the battery cell module is attached to the first heat-conducting silica gel on the bottom cold plate; according to the invention, through heat dissipation to the bottom and the side of the battery cell module, the structural design of matching of the side cold plates and the bottom cold plate and the design of the cold plate flow channel, on the premise of meeting the requirement of high-rate charge and discharge, the temperature distribution uniformity can be effectively improved, and the problem of design space limitation of a battery system can be solved.
Description
Technical Field
The invention relates to a soft package battery system with liquid cooling, and belongs to the technical field of lithium ion battery thermal management.
Background
The uniformity of the temperature distribution in the soft package battery system is always a difficult point in the design of the soft package battery system, and the uniformity of the battery cell and the battery cell module is deteriorated due to the continuous expansion of the difference between the battery cells caused by the nonuniformity of the temperature distribution, so that the failure of the battery is accelerated; in the prior art, the cooling modes for the soft package battery system mainly comprise air cooling and liquid cooling; the air cooling mode is to realize radial heat dissipation of the battery cell through heat exchange of an air flow channel in the system, has certain delay and low heat dissipation efficiency, and cannot effectively improve the temperature distribution uniformity in the system; the liquid cooling mode is that a cold plate is distributed at the bottom of the system or the surface of the electric core body, and a fixed flow field is formed by the cooling liquid to realize heat exchange; although the method can prevent the over-high temperature of the single battery cell or relieve the problem of uneven temperature distribution among the battery cells, the temperature distribution condition in the system still cannot be effectively improved on the premise of meeting the requirement of high-rate charge and discharge; and the mode that the cold drawing is arranged on the surface of the battery cell body has great requirements on space, and the requirement of the market on the high energy density of the battery system can not be met at the same time.
Disclosure of Invention
The invention aims to overcome the defects and provide a soft package battery system with liquid cooling, which can effectively solve the problem of uneven temperature distribution and solve the problem of design space limitation of the battery system.
The invention adopts the following technical scheme:
a soft package battery system with liquid cooling comprises a battery body and a battery box; the battery body comprises a plurality of battery cell modules and a flow guide row, and is placed in the battery box; mounting gaps are formed between every two adjacent battery cell modules; a liquid cooling assembly is fixed on the battery body; the liquid cooling assembly includes: the bottom cold plate and the side cold plates are provided with a plurality of side cold plates; a plurality of first heat-conducting silica gels are arranged on the bottom cold plate; a first liquid channel is arranged in the bottom cold plate, the bottom cold plate is provided with a first liquid inlet and a first liquid outlet, and the first liquid inlet and the first liquid outlet are communicated with the first liquid channel; the first liquid inlet is connected with a first liquid inlet pipe, and the first liquid outlet is connected with a first liquid outlet pipe; second heat-conducting silica gel is arranged on two surfaces of the side cold plates; a second liquid channel is arranged in each of the side cold plates, each side cold plate is provided with a second liquid inlet and a second liquid outlet, and the second liquid inlets and the second liquid outlets are communicated with the second liquid channels; the second liquid inlet is connected with a second liquid inlet pipe, and the second liquid outlet is connected with a second liquid outlet pipe; the side cold plates are inserted into the installation gap, so that two side faces of each battery cell module are attached to the second heat-conducting silica gel of the adjacent side cold plate, and the bottom face of the battery cell module is attached to the first heat-conducting silica gel on the bottom cold plate; the battery box is provided with a plurality of liquid cooling holes for installing an inlet and outlet pipeline to be respectively communicated with the first inlet, the first liquid outlet, the second inlet and the second liquid outlet.
Preferably, still be equipped with inlet manifold, play liquid house steward: the liquid inlet main pipe is communicated with a plurality of second liquid inlet pipes; the liquid outlet main pipe is communicated with the second liquid outlet pipes.
Preferably, the first liquid inlet and the first liquid outlet are arranged on the same side of the bottom cold plate; the density of the flow channels of the first liquid channel is distributed from thin to dense, the density of the flow channels close to the first liquid inlet is sparsest, the density of the flow channels close to the first liquid outlet is second, and the density of the flow channels far away from the first liquid inlet and the first liquid outlet is densest; the flow channel of the first liquid channel is divided into a transverse flow channel and a longitudinal flow channel; the transverse flow channel is arranged on the long sides of the two sides of the bottom cold plate and is perpendicular to the arrangement direction of the battery cells of the battery cell module; the longitudinal flow channel is arranged in the middle of the bottom cold plate and parallel to the cell arrangement direction of the cell module; the transverse flow passage and the longitudinal flow passage are provided with a plurality of openings which are communicated.
Preferably, the second liquid inlet and the second liquid outlet are respectively arranged at two sides above the side cooling plate; the flow channel of the second liquid channel is designed to transversely enter and exit and directly leads to the middle position of the side cooling plate.
Preferably, the bottom cold plate is further provided with a layer of buffering foam.
Preferably, the bottom surface inside the battery box is also provided with a reinforcing rib limiting structure; the reinforcing rib limiting structure comprises a first reinforcing rib and a second reinforcing rib; the two first reinforcing ribs are distributed on two sides of the bottom surface in the battery box; the second reinforcing rib is positioned between the two first reinforcing ribs, the height of the second reinforcing rib is lower than that of the two first reinforcing ribs, and the buffering foam is in contact with the second reinforcing rib; end covers are arranged at two ends of the battery cell module; and the end covers are in contact with the first reinforcing ribs.
Preferably, the battery box is provided with a box cover, and a closed cavity is formed.
Preferably, be equipped with the sealing washer between case lid and the battery box, the sealing washer adopts silica gel integrated into one piece, plays sealed effect, guarantees that the battery box has waterproof function.
Preferably, the case cover is provided with an explosion-proof valve with pressure relief and explosion-proof functions.
Preferably, the box cover is provided with a fireproof spray head which plays a role in extinguishing fire when the battery body is out of control and catches fire.
The invention has the beneficial effects that: according to the invention, through heat dissipation to the bottom and the side surfaces of the battery cell module, the specific structural design of matching of the plurality of side surface cold plates and the bottom cold plate and the specific design of the cold plate flow channel, on the premise of meeting the requirement of high-rate charge and discharge, the temperature distribution uniformity can be effectively improved, and the problem of design space limitation of a battery system can be solved.
Drawings
FIG. 1 is a schematic of the present invention.
FIG. 2 is a schematic view of a liquid cooling assembly of the present invention.
FIG. 3 is a partial schematic view of a liquid cooling assembly of the present invention.
FIG. 4 is a schematic view of a bottom cold plate of the present invention.
FIG. 5 is a schematic view of the side cold plate of the present invention.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the present invention is further described with reference to the accompanying drawings and embodiments:
as shown in fig. 1 to 5, the pouch battery system with liquid cooling includes a battery body 1 and a battery box 2; the battery body 1 comprises a plurality of battery cell modules 11 and a flow guide bar 12, and is connected with the plurality of battery cell modules 11 through the flow guide bar 12 and connected with an electric part 13; the battery body 1 is placed in the battery box 2; mounting gaps are formed between every two adjacent battery cell modules; the battery body 1 is fixed with the liquid cooling assembly, the battery body can be arranged on the liquid cooling assembly through bolts and then is placed into the battery box 2, and the battery body 1 can be placed into the battery box 2 without being fixed due to the dead weight of the battery body, and can also be fixed through the bolts; the liquid cooling assembly includes: the bottom cold plate 3 and the side cold plates 4 are arranged, and the bottom cold plate 3 is provided with a plurality of side cold plates 4; a plurality of first heat-conducting silica gels 81 are arranged on the bottom cold plate 3; a first liquid channel 33 is arranged in the bottom cold plate 3, the bottom cold plate is provided with a first liquid inlet 31 and a first liquid outlet 32, and the first liquid inlet 31 and the first liquid outlet 32 are communicated with the first liquid channel 33; the first liquid inlet 31 is connected with a first liquid inlet pipe 51, and the first liquid outlet 32 is connected with a first liquid outlet pipe 52; second heat-conducting silica gel 82 is arranged on two surfaces of the side cold plates 4; a second liquid channel 43 is arranged in each of the side cold plates 4, each side cold plate is provided with a second liquid inlet 41 and a second liquid outlet 42, and the second liquid inlet 41 and the second liquid outlet 42 are communicated with the second liquid channel 43; the second liquid inlet 41 is connected with a second liquid inlet pipe 61, and the second liquid outlet 42 is connected with a second liquid outlet pipe 62; a plurality of the side cold drawing 4 inserts installation clearance makes each the electricity core module 11 both sides face all laminates with the second heat conduction silica gel 82 of adjacent side cold drawing 4 (for example, if there are n modules, there are n +1 side cold drawing), and the laminating of the first heat conduction silica gel 81 on the bottom cold drawing 3 of the bottom of electricity core module 11.
Preferably, a liquid inlet header pipe 71 and a liquid outlet header pipe 72 are further arranged: the liquid inlet header pipe 71 is communicated with a plurality of second liquid inlet pipes 61; the liquid outlet manifold 72 is communicated with a plurality of the first liquid outlet pipes 62.
The battery box 2 is provided with a plurality of liquid cooling holes 23, which are respectively used for installing a first liquid inlet 31, a first liquid outlet 32, a liquid inlet header pipe 71 and a liquid outlet header pipe 72.
Preferably, the first liquid inlet 31 and the first liquid outlet 32 are installed on the same side of the bottom cold plate 3; the density of the flow channels of the first liquid channel 33 is distributed from thin to dense, the density of the flow channels close to the first liquid inlet 31 is sparsest, the density of the flow channels close to the first liquid outlet 32 is second, and the density of the flow channels far away from the first liquid inlet 31 and the first liquid outlet 32 is densest; the flow channel of the first liquid channel is divided into a transverse flow channel 331 and a longitudinal flow channel 332; the transverse flow channel 331 is arranged on the long sides of the two sides of the bottom cold plate and is perpendicular to the cell arrangement direction of the cell module; the longitudinal flow channel 332 is arranged in the middle of the bottom cold plate and parallel to the arrangement direction of the battery cells of the battery cell module; transverse flow path 331 and longitudinal flow path 332 are provided with a plurality of openings that communicate.
Preferably, the second liquid inlet 41 and the second liquid outlet 42 are respectively arranged at two sides above the side cold plate 4; the flow path of the second liquid channel 43 is designed to pass in and out laterally and directly to the middle of the side cold plate.
Preferably, the bottom cold plate 3 is further provided with a layer of buffer foam 9.
Preferably, the bottom surface inside the battery box 2 is also provided with a reinforcing rib limiting structure; the reinforcing rib limiting structure comprises a first reinforcing rib 21 and a second reinforcing rib 22; the two first reinforcing ribs 21 are distributed on two sides of the bottom surface in the battery box 2; the second reinforcing rib 22 is positioned between the two first reinforcing ribs 21, the height of the second reinforcing rib 22 is lower than that of the two first reinforcing ribs 21, and the buffer foam 9 is in contact with the second reinforcing rib 22; end covers 111 are arranged at two ends of the battery cell module; a plurality of the end caps 111 are in contact with the first reinforcing beads 21.
When the battery is installed, the weight of the battery body 1 is mainly borne by the two first reinforcing ribs 21; the bottom of the battery body 1 is in contact with and extrudes the bottom cold plate 3, so that the bottom cold plate 3 presses the buffering foam 9, the buffering foam 9 generates certain compression deformation between the bottom cold plate 3 and the second reinforcing ribs 22, two sides of the bottom cold plate 3 are limited by the two first reinforcing ribs 21, and the bottom cold plate 3 can be ensured to be in contact with the bottom of the battery body all the time; and the problem that the bottom cold plate 3 directly bears the weight of the battery body 1 to deform and further influence the heat dissipation effect is solved.
Preferably, the battery case 2 has a case cover 24 forming a closed cavity.
Preferably, be equipped with sealing washer 25 between case lid 24 and the battery box 2, sealing washer 25 adopts silica gel integrated into one piece, plays sealed effect, guarantees that the battery box has waterproof function.
Preferably, an explosion-proof valve 241 with pressure relief and explosion-proof functions is arranged on the box cover 24.
Preferably, the case cover 24 is provided with a fire-proof nozzle 242 for extinguishing fire when the battery body is out of control and the fire is on.
The battery body consists of n (wherein n is more than or equal to 1) battery cell modules, an installation gap is formed between the n wire core modules, and n +1 side face cold plates are fastened on the side faces of the battery cell modules through bolts, so that second heat-conducting silica gel adhered to the two sides of the side face cold plates is in press contact with heat-radiating aluminum sheets on the side faces of the battery cell modules to the maximum extent, and heat is conducted to the side face cold plates through the second heat-conducting silica gel; first heat conduction silica gel is also pasted to the upper surface of bottom cold drawing, and first heat conduction silica gel leads the heat of electricity core module bottom on the cold drawing of bottom, and bottom cold drawing and side cold drawing flow direction are independent each other with the return circuit (two types of return circuits also can all shunt from same general return circuit), and the combined action is led away the heat that the battery module produced fast.
As shown in fig. 4, the bottom cold plate 3 of the present invention is designed to have the same side inlet and outlet, and according to the direction of water flow and the heat exchange duration, the density of the flow channels of the first liquid channel 33 is distributed from sparse to dense, the density of the flow channels close to the first liquid inlet 31 is sparsest, the density of the flow channels close to the first liquid outlet 32 is second, and the density of the flow channels far away from the first liquid inlet 31 and the first liquid outlet 32 is densest; the flow channel of the first liquid channel is divided into a transverse flow channel 331 and a longitudinal flow channel 332; the transverse flow channel 331 is arranged on the long sides of the two sides of the bottom cold plate and is perpendicular to the cell arrangement direction of the cell module; the longitudinal flow channel 332 is arranged in the middle of the bottom cold plate and parallel to the arrangement direction of the battery cells of the battery cell module; the transverse flow passage 331 is communicated with the longitudinal flow passage 332 through a plurality of openings; the advantages of such a design are: firstly, balancing the pressure and flow of inlet and outlet; secondly, the cooling liquid can be ensured to rapidly flow to the far ends of the first liquid inlet 31 and the first liquid outlet 32, and the rapid backflow of the cooling liquid is realized; thirdly, to the battery body 1, the temperature of middle electric core module is higher than the temperature of the electric core module of both sides, and the design can balance the temperature difference of a plurality of electric core modules like this.
As shown in fig. 5, the internal structure of the flow channel of the side cold plate 4 of the present invention is: the second liquid inlet 41 and the second liquid outlet 42 are respectively arranged at two sides above the side cold plate 4, the second liquid channel 43 is designed to transversely enter and exit and directly leads to the middle position of the side cold plate 4, the second liquid inlet 41 and the second liquid outlet 42 are higher than each other, a cooling medium can rapidly flow to the middle of the cold plate by utilizing water potential difference, the pressure of a middle flow channel is smaller, the flow rate is small, and the heat exchange time is long; the second liquid inlet 41 and the second liquid outlet 42 have high pressure and flow rate, and the heat exchange time is short; the following effects can be achieved by this structure: firstly, the required heat exchange time is achieved through the pressure difference between the inlet and the outlet and the pressure of the middle flow passage; ensuring that the liquid flow direction is parallel to the arrangement direction of the battery cells and ensuring that the liquid flow flowing through each battery cell is uniform; thirdly, the middle temperature of singly organizing the electric core module is higher than both sides, balances the temperature difference between singly organizing the middle and both sides of sinle silk module through the time of above-mentioned heat exchange.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The components adopted in the invention are all universal standard components or components known by those skilled in the art, and the structure and principle of the components are known by those skilled in the art through technical manuals or conventional experimental methods, for example, the battery cell module, the flow guide bar and the assembled battery body are connected to an electric component, and the installation of the explosion-proof valve and the fire-proof nozzle are installation connections known by those skilled in the art, and the invention is not described in detail.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.
Claims (10)
1. A soft package battery system with liquid cooling comprises a battery body and a battery box; the battery body includes a plurality of electric core module, water conservancy diversion row, the battery body place in the battery box, its characterized in that:
mounting gaps are formed between every two adjacent battery cell modules;
a liquid cooling assembly is fixed on the battery body;
the liquid cooling assembly includes: the bottom cold plate and the side cold plates are provided with a plurality of side cold plates;
a plurality of first heat-conducting silica gels are arranged on the bottom cold plate; a first liquid channel is arranged in the bottom cold plate, the bottom cold plate is provided with a first liquid inlet and a first liquid outlet, and the first liquid inlet and the first liquid outlet are communicated with the first liquid channel; the first liquid inlet is connected with a first liquid inlet pipe, and the first liquid outlet is connected with a first liquid outlet pipe;
second heat-conducting silica gel is arranged on two surfaces of the side cold plates; a second liquid channel is arranged in each of the side cold plates, each side cold plate is provided with a second liquid inlet and a second liquid outlet, and the second liquid inlets and the second liquid outlets are communicated with the second liquid channels; the second liquid inlet is connected with a second liquid inlet pipe, and the second liquid outlet is connected with a second liquid outlet pipe;
the side cold plates are inserted into the installation gap, so that two side faces of each battery cell module are attached to the second heat-conducting silica gel of the adjacent side cold plate, and the bottom face of the battery cell module is attached to the first heat-conducting silica gel on the bottom cold plate;
the battery box is provided with a plurality of liquid cooling holes for installing an inlet and outlet pipeline to be respectively communicated with the first inlet, the first liquid outlet, the second inlet and the second liquid outlet.
2. The soft-package battery system with liquid cooling of claim 1, wherein:
the liquid inlet main pipe and the liquid outlet main pipe are also arranged:
the liquid inlet main pipe is communicated with a plurality of second liquid inlet pipes;
the liquid outlet main pipe is communicated with the second liquid outlet pipes.
3. The soft-package battery system with liquid cooling of claim 1, wherein:
the first liquid inlet and the first liquid outlet are arranged on the same side of the bottom cold plate;
the density of the flow channels of the first liquid channel is distributed from thin to dense, the density of the flow channels close to the first liquid inlet is sparsest, the density of the flow channels close to the first liquid outlet is second, and the density of the flow channels far away from the first liquid inlet and the first liquid outlet is densest;
the flow channel of the first liquid channel is divided into a transverse flow channel and a longitudinal flow channel;
the transverse flow channel is arranged on the long sides of the two sides of the bottom cold plate and is perpendicular to the arrangement direction of the battery cells of the battery cell module;
the longitudinal flow channel is arranged in the middle of the bottom cold plate and parallel to the cell arrangement direction of the cell module;
the transverse flow passage and the longitudinal flow passage are provided with a plurality of openings which are communicated.
4. The soft-package battery system with liquid cooling of claim 1, wherein:
the second liquid inlet and the second liquid outlet are respectively arranged at two sides above the side face cold plate;
the flow channel of the second liquid channel is designed to transversely enter and exit and directly leads to the middle position of the side cooling plate.
5. The soft-package battery system with liquid cooling of claim 1, wherein:
and a layer of buffering foam is also arranged below the bottom cold plate.
6. The pouch battery system with liquid cooling of claim 5, characterized in that:
the bottom surface in the battery box is also provided with a reinforcing rib limiting structure;
the reinforcing rib limiting structure comprises a first reinforcing rib and a second reinforcing rib;
the two first reinforcing ribs are distributed on two sides of the bottom surface in the battery box;
the second reinforcing rib is positioned between the two first reinforcing ribs, the height of the second reinforcing rib is lower than that of the two first reinforcing ribs, and the buffering foam is in contact with the second reinforcing rib;
end covers are arranged at two ends of the battery cell module; and the end covers are in contact with the first reinforcing ribs.
7. The soft-package battery system with liquid cooling of claim 1, wherein:
the battery box is provided with a box cover to form a closed cavity.
8. The pouch battery system with liquid cooling of claim 7, characterized in that:
be equipped with the sealing washer between case lid and the battery box, the sealing washer adopts silica gel integrated into one piece, plays sealed effect, guarantees that the battery box has waterproof function.
9. The pouch battery system with liquid cooling of claim 7, characterized in that:
and an explosion-proof valve with pressure relief and explosion-proof functions is arranged on the box cover.
10. The pouch battery system with liquid cooling of claim 7, characterized in that:
the box cover is provided with a fireproof spray head which has the function of extinguishing fire when the battery body is out of control and catches fire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110060525.4A CN112736324A (en) | 2021-01-18 | 2021-01-18 | Take laminate polymer battery system of liquid cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110060525.4A CN112736324A (en) | 2021-01-18 | 2021-01-18 | Take laminate polymer battery system of liquid cooling |
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| Publication Number | Publication Date |
|---|---|
| CN112736324A true CN112736324A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110060525.4A Pending CN112736324A (en) | 2021-01-18 | 2021-01-18 | Take laminate polymer battery system of liquid cooling |
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| CN113782869A (en) * | 2021-09-13 | 2021-12-10 | 广东法拉达汽车散热器有限公司 | Electronic big bus water-cooling power battery box of integral type |
| CN114221070A (en) * | 2021-11-29 | 2022-03-22 | 系统电子科技（镇江）有限公司 | Modularization energy storage all-in-one |
| CN114497806A (en) * | 2022-01-26 | 2022-05-13 | 西安科技大学 | Power battery thermal management system and control method |
| CN114614160A (en) * | 2022-04-11 | 2022-06-10 | 广汽埃安新能源汽车有限公司 | Battery device, management system and management method of battery refrigerant |
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