CN115241570A - Integrated battery thermal management system - Google Patents
Integrated battery thermal management system Download PDFInfo
- Publication number
- CN115241570A CN115241570A CN202210977386.6A CN202210977386A CN115241570A CN 115241570 A CN115241570 A CN 115241570A CN 202210977386 A CN202210977386 A CN 202210977386A CN 115241570 A CN115241570 A CN 115241570A
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- Prior art keywords
- plate
- box body
- battery
- cooling
- thermal management
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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
- H01M10/63—Control systems
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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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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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)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides an integrated battery thermal management system which comprises a battery module consisting of a plurality of battery cells and a box body used for installing the battery cells, wherein a cooling water channel used for flowing of a cooling medium is arranged in the box body, and the battery module enables the cooling medium to be in direct contact with the battery cells through the cooling water channel so as to realize battery thermal management control. According to the integrated battery thermal management system provided by the invention, the cooling medium is directly contacted with the battery cell for cooling, and a water cooling plate in a traditional mode is omitted, so that the arrangement of the battery module in the battery pack is relatively simple; meanwhile, by controlling the flow of the cooling medium, the cooling and heating rates of the battery core can be obviously increased, so that the power battery can work in a proper temperature range; when the battery core is out of control, the cooling liquid can be directly heated, evaporated and absorbed heat so as to slow down the rate of thermal runaway and increase the time for safe rescue and escape.
Description
Technical Field
The invention relates to the field of new energy automobile battery structure design, in particular to an integrated battery thermal management system.
Background
The traditional cooling structure is that a water cooling plate is arranged at the bottom of the module, so that the heat of the battery is conducted from each part of the module to the bottom, the heat is taken out through the water cooling plate, the heat transfer rate is low, the heat generated by the battery core cannot be conducted in time, and the service life of the battery and the charging and discharging capacity of the battery are influenced; meanwhile, after the battery is out of control due to heat, the heat conduction between the modules is rapidly increased, and the probability of fire and explosion of the battery is higher.
In order to solve the drawback problem of the conventional battery module cooling structure, the conventional cooling structure needs to be improved.
Disclosure of Invention
In view of this, the present invention provides an integrated battery thermal management system, in which a cooling water channel is disposed in a box structure of a battery module to enable a cooling medium to directly contact a battery cell, so as to improve a heat conduction rate of the battery cell, and effectively slow down a heat conduction speed between modules when a battery is out of control due to heat.
The invention provides an integrated battery thermal management system which comprises a battery module and a box body, wherein the battery module is composed of a plurality of battery cells, the box body is used for installing the battery cells, a cooling water channel for flowing of a cooling medium is arranged in the box body, and the battery module enables the cooling medium to be in direct contact with the battery cells through the cooling water channel so as to realize thermal management control on the battery.
Further, the box body comprises a box body side plate, a box body top plate and a box body bottom plate, and a plurality of via holes used for installing the battery cores are formed in the box body top plate and the box body bottom plate.
Further, the box roof includes box roof planking, box roof inner panel and box roof curb plate, there is even clearance and forms the upper cooling water course with box roof curb plate between box roof planking and the box roof inner panel.
Further, a sealing element is arranged between the box body top plate outer plate via hole and the battery cell, and a gap for flowing in of a cooling medium is reserved between the box body top plate inner plate via hole and the battery cell.
Further, the box bottom plate comprises a box bottom plate outer plate, a box bottom plate inner plate and a box bottom plate side plate, and an even gap exists between the box bottom plate outer plate and the box bottom plate inner plate and forms a lower cooling water channel with the box bottom plate side plate.
Furthermore, a sealing element is arranged between the box body bottom plate outer plate via hole and the battery cell, and a gap for flowing out of a cooling medium is reserved between the box body bottom plate inner plate via hole and the battery cell.
Furthermore, the upper cooling water channel and the side plate of the top plate of the box body are provided with water inlets for cooling media to flow in, the lower cooling water channel and the side plate of the bottom plate of the box body are provided with water outlets for cooling media to flow out, and the water inlets and the water outlets are arranged on the same side.
Furthermore, a flow distribution plate for distributing cooling media is arranged at the water inlet of the upper cooling water channel.
Furthermore, a plurality of clapboards used for shunting the cooling medium are respectively arranged in the upper cooling water channel.
Further, the partition plates comprise transverse partition plates and longitudinal partition plates, and the partition plates can change the flow area of the flow channel according to the impact of cooling media with different flow rates.
The invention has the beneficial effects that: according to the integrated battery thermal management system provided by the invention, the cooling medium is directly contacted with the battery cell for cooling, and a water cooling plate in a traditional mode is omitted, so that the arrangement of the battery module in the battery pack is relatively simple; meanwhile, by controlling the flow of the cooling medium, the cooling and heating rates of the battery core can be obviously increased, so that the power battery can work in a proper temperature range; when the battery core is out of control, the cooling liquid can be directly heated, evaporated and absorbed heat so as to slow down the rate of thermal runaway and increase the time for safe rescue and escape.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;
fig. 4 is a schematic structural view of the separator.
Wherein the figures include the following reference numerals: 1-electric core; 2-a box body; 3-box top plate; 31-outer plate of box top plate; 32-box top plate inner plate; 33-side plate of top plate of box body; 4-box bottom plate; 41-outer plate of box body bottom plate; 42-inner plate of bottom plate of box body; 43-side plate of bottom plate of box body; 5-side plate of the box body; 6-water inlet; 7-water outlet; 8-a splitter plate; 9-a separator; 91-a hinge; 92-a spring; 93-mesh plate; 10-sealing ring.
Detailed Description
As shown in the figure, the integrated battery thermal management system provided by the invention comprises a battery module consisting of a plurality of battery cells 1 and a box body 2 for installing the battery cells, wherein a cooling water channel for flowing of a cooling medium is arranged in the box body 2, and the battery module enables the cooling medium to be in direct contact with the battery cells through the cooling water channel so as to realize battery thermal management control.
The structure of the invention directly contacts with a cooling medium through the battery module, so that good thermal blocking can be formed, once thermal runaway occurs, the cooling liquid is heated to evaporate and absorb heat, the thermal runaway rate can be slowed down, and the time is increased for safe rescue and escape; the box body 2 is used as a mounting bracket of the battery cell 1, a plurality of battery cells are connected in series and integrated to form a battery module, the cooling water channel is directly arranged in the box body 2 by changing the internal structure of the box body 2, the cooling mode that a water cooling plate is arranged at the bottom of the battery module in the traditional battery pack is eliminated, and the arrangement of the battery module in the battery pack is relatively simple; when the cooling medium flows through the cooling water channel in the battery module, the cooling medium can be directly contacted with the battery core 1, the temperature of the battery core 1 can be controlled in real time, and the temperature of the battery module is further controlled; meanwhile, the temperature of the battery module is controlled mainly by controlling the flow rate of a cooling medium in a cooling water channel and forming different liquid mold forms on the surface of the module according to the temperature of the module, so that the power battery can work in a proper temperature range, and the aim of controlling is fulfilled. The battery core 1 in the invention is a lithium battery core in the conventional technology, but the shape is not unique, and can be cylindrical, square column and the like, and the embodiment adopts a cylindrical battery core; in the invention, the cooling medium needs to be in direct contact with the battery core 1, and whether insulation is caused needs to be considered, so that direct cooling media such as cooling oil and cooling liquid are adopted, and the cooling liquid is used in the embodiment and is not described herein again;
in this embodiment, as shown in fig. 1, the box body 2 includes a box body side plate 5, a box body top plate 3 and a box body bottom plate 4, and a plurality of via holes for installing the battery cells 1 are formed on the box body top plate 3 and the box body bottom plate 4; the box body 2 is a metal box body formed by connecting and fixing a plurality of metal stamping structural parts, the shape and the size of the box body are determined according to the number of the electric cores and the size of the battery pack during specific use, and the box body can be but is not limited to a square body; through the via holes for installing the electric core 1 are formed in the box body top plate 3 and the box body bottom plate 4, the box body 2 is directly used as an installation support of the electric core 1, and the electric core 1 is fixed; the shape and size of the via hole can be formulated according to the shape and size of the battery cell 1.
In this embodiment, the box top plate 3 includes a box top plate outer plate 31, a box top plate inner plate 32 and a box top plate side plate 33, and a uniform gap is formed between the box top plate outer plate 31 and the box top plate inner plate 32 and forms an upper cooling water channel with the box top plate side plate 33; the tank bottom plate 4 comprises a tank bottom plate outer plate 41, a tank bottom plate inner plate 42 and tank bottom plate side plates 43, wherein uniform gaps exist between the tank bottom plate outer plate 41 and the tank bottom plate inner plate 42, and the tank bottom plate outer plate and the tank bottom plate inner plate 43 form a lower cooling water channel.
Referring to fig. 2, the top plate 3 and the bottom plate 4 of the tank body are both in the form of an inner plate and an outer plate with side plates, and form an upper cooling water channel and a lower cooling water channel, which are connected and fixed by a tank body plate 5 to form an integral tank body 2; this structure can make the coolant liquid can effectively seal in box 2 is inside, guarantees that the coolant liquid can not leak through the cooling water course.
In this embodiment, a sealing element 10 is arranged between the through hole of the outer plate 31 of the top plate of the box body and the battery cell, and a gap for a cooling medium to flow into is reserved between the through hole of the inner plate 32 of the top plate of the box body and the battery cell 1; and a sealing element 10 is arranged between the through hole of the outer plate 41 of the box body bottom plate and the electric core 1, and a gap for flowing out of a cooling medium is reserved between the through hole of the inner plate 42 of the box body bottom plate and the electric core 1.
Referring to fig. 2, the sealing element is disposed at a contact position between the battery cell and the outer side of the case, and mainly functions to ensure that the cooling liquid does not leak, and a sealing ring or a sealant is generally used, in this example, the sealing ring 10 is used; the box top plate outer plate 31 is tightly contacted with the electric core 2 and sealed by the sealing ring 10, and the box top plate inner plate 32 is slightly smaller than the box top plate outer plate 31 in size and has a gap with the electric core 1; the box bottom plate 4 is consistent with the box top plate 3, the box bottom plate outer plate 41 is in close contact with the battery cell 2 and sealed by the seal ring 10, and the box bottom plate inner plate 42 is slightly smaller than the box bottom plate outer plate 41 in size and has a gap with the battery cell 1
When the coolant liquid flows through the upper cooling water channel, the coolant liquid flows into a cavity formed among the box top plate 3, the box bottom plate 4 and the box side plate 5 through a gap between the box top plate inner plate 32 and the battery cell 1, and is cooled by directly contacting with the side surface of the battery cell 1, so that heat is taken out, and then the coolant liquid flows out of the cavity and enters the lower cooling water channel through a gap between the box bottom plate inner plate 42 and the battery cell 1. Every electric core all sets up the clearance with the inside of box bottom plate or roof, is that the coolant liquid can both the direct contact with every electric core, can fine avoid single electric core to take place the thermal runaway back, the thermal runaway that arouses spreads the problem.
In this embodiment, the upper cooling water channel and the side plate 33 of the top plate of the tank body are provided with a water inlet 6 for the inflow of the cooling medium, the lower cooling water channel and the side plate 43 of the bottom plate of the tank body are provided with a water outlet 7 for the outflow of the cooling medium, and the water inlet 6 and the water outlet 7 are arranged on the same side. As shown in fig. 1 and fig. 2, the water inlets and the water outlets of the upper and lower cooling water channels are arranged on the side surfaces of the box body top plate 3 and the box body bottom plate 4, and the space size of the battery module in the height direction can be reduced by arranging the water inlets and the water outlets on the side surfaces compared with the side surfaces on the top surface or the bottom surface, so that the structural size of the battery pack in the height direction is reduced, the battery pack is lighter, and the manufacturing cost is reduced; the water inlet 6 and the water outlet 7 are arranged on the same side, so that a cooling pipeline in the battery pack can be easily connected with the water inlet 6 and the water outlet 7, the overall structure of the battery pack is more compact, and the occupied space of a vehicle body is smaller; if thermal runaway occurs, the cooling liquid evaporates to absorb heat, and the steam can be discharged through the water inlet and the water outlet to play a role in pressure relief.
In this embodiment, as shown in fig. 1, a flow distribution plate 8 for distributing a cooling medium is disposed at the water inlet 6 of the upper cooling water channel; the flow distribution plate 8 distributes the cooling liquid into the upper cooling water channel through the water inlet 6 for the first time.
In this embodiment, a plurality of partition plates 9 for dividing the cooling medium are further disposed in the upper cooling water channel; the partition plates comprise transverse partition plates and longitudinal partition plates, and the flow area of the flow channel can be changed according to the impact of cooling media with different flow rates.
Referring to fig. 3, the partitions 9 inside the upper cooling water channel are a transverse partition arranged in the direction in which the cooling liquid flows from the water inlet 6 and a longitudinal partition arranged perpendicular to the transverse partition, and the transverse partition and the longitudinal partition are respectively and fixedly installed between the outermost transverse electric core at the water inlet 6 and the side plate 5 of the tank body and between the outermost longitudinal electric core at the water inlet 6 and the side plate 5 of the tank body; baffle 9 installation is fixed between the planking and the inner panel of box roof, and every electric core department is distributed to the coolant liquid to the primary function, and according to electric core quantity and the difference of cooling water course size, baffle 9 can carry out the adaptation according to specific in service behavior: when the number of the electric cores is small and the cooling water channel is small, the metal screen plates can be directly used for shunting, and the flow of the cooling liquid passing through the partition plate each time can be changed by only changing the size and the number of the water leakage holes on each metal screen plate from the water inlet to the back in sequence, so that the flow distribution effect is achieved; when the number of the electric cores is large and the cooling water channel is large, a metal screen plate with elastic adjustment can be used for shunting, as shown in fig. 4, the partition plate 9 is composed of a screen plate 93, hinges 91 and springs 92, the screen plate close to the side plate of the top plate of the box body is fixedly connected with the outer plate and the inner plate of the top plate of the box body, the screen plate close to the electric core 1 is rotatably connected with the other screen plate through the hinges 91, the springs 92 are arranged between the two screen plates, the elastic force of the springs 92 on each partition plate is weakened from the water inlet 6 backwards in sequence, when the partition plate 9 is impacted by cooling liquid with different flow rates, the springs 92 can bear different degrees of tensile force or pressure, the screen plate close to the electric core rotates around the hinge immediately, so that the flow area of a flow channel is changed, and the flow rate distribution effect is achieved.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. An integrated battery thermal management system, comprising: the battery module comprises a battery module consisting of a plurality of battery cells and a box body used for installing the battery cells, wherein a cooling water channel used for flowing of a cooling medium is arranged in the box body, and the battery module enables the cooling medium to be in direct contact with the battery cells to realize battery thermal management control.
2. The integrated battery thermal management system of claim 1, wherein: the box body comprises box body side plates, a box body top plate and a box body bottom plate, wherein a plurality of through holes used for installing the battery cores are formed in the box body top plate and the box body bottom plate.
3. The integrated battery thermal management system of claim 2, wherein: the box body top plate comprises a box body top plate outer plate, a box body top plate inner plate and a box body top plate side plate, wherein an even gap exists between the box body top plate outer plate and the box body top plate inner plate, and an upper cooling water channel is formed between the box body top plate outer plate and the box body top plate inner plate and the box body top plate side plate.
4. The integrated battery thermal management system of claim 3, wherein: and a sealing element is arranged between the box body top plate outer plate via hole and the battery cell, and a gap for flowing in of a cooling medium is reserved between the box body top plate inner plate via hole and the battery cell.
5. The integrated battery thermal management system of claim 2, wherein: the box bottom plate comprises a box bottom plate outer plate, a box bottom plate inner plate and a box bottom plate side plate, wherein an even gap is formed between the box bottom plate outer plate and the box bottom plate inner plate, and a lower cooling water channel is formed between the box bottom plate outer plate and the box bottom plate side plate.
6. The integrated battery thermal management system of claim 5, wherein: and a sealing element is arranged between the outer plate via hole of the box body bottom plate and the battery cell, and a gap for flowing out of a cooling medium is reserved between the inner plate via hole of the box body bottom plate and the battery cell.
7. The integrated battery thermal management system of claim 3, wherein: the upper cooling water channel and the side plate of the top plate of the box body are provided with water inlets for cooling media to flow in, the lower cooling water channel and the side plate of the bottom plate of the box body are provided with water outlets for cooling media to flow out, and the water inlets and the water outlets are arranged on the same side.
8. The integrated battery thermal management system of claim 7, wherein: and a flow distribution plate for distributing cooling media is arranged at the water inlet of the upper cooling water channel.
9. The integrated battery thermal management system of claim 8, wherein: and a plurality of clapboards used for shunting the cooling medium are respectively arranged in the upper cooling water channel.
10. The integrated battery thermal management system of claim 9, wherein: the clapboards comprise a transverse clapboard and a longitudinal clapboard, and the clapboards can change the flow area of the flow channel according to the impact of cooling media with different flow rates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210977386.6A CN115241570A (en) | 2022-08-15 | 2022-08-15 | Integrated battery thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210977386.6A CN115241570A (en) | 2022-08-15 | 2022-08-15 | Integrated battery thermal management system |
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| Publication Number | Publication Date |
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| CN115241570A true CN115241570A (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210977386.6A Pending CN115241570A (en) | 2022-08-15 | 2022-08-15 | Integrated battery thermal management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117276752A (en) * | 2023-11-23 | 2023-12-22 | 长蓝科技(江苏)有限公司 | Integrated liquid cooling energy storage integrated cabinet |
-
2022
- 2022-08-15 CN CN202210977386.6A patent/CN115241570A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117276752A (en) * | 2023-11-23 | 2023-12-22 | 长蓝科技(江苏)有限公司 | Integrated liquid cooling energy storage integrated cabinet |
| CN117276752B (en) * | 2023-11-23 | 2024-01-26 | 长蓝科技(江苏)有限公司 | Integrated liquid cooling energy storage integrated cabinet |
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