CN110890494B - Battery module and battery box with liquid cooling device - Google Patents
Battery module and battery box with liquid cooling device Download PDFInfo
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- CN110890494B CN110890494B CN201911206635.6A CN201911206635A CN110890494B CN 110890494 B CN110890494 B CN 110890494B CN 201911206635 A CN201911206635 A CN 201911206635A CN 110890494 B CN110890494 B CN 110890494B
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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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
- H01M10/655—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
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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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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The utility model provides a battery module and battery box with liquid cooling device, includes casing, a plurality of electric core and liquid cooling device, and is a plurality of electric core transverse arrangement is in proper order in the casing, the liquid cooling device is including establishing liquid inlet pipeline, liquid return pipeline and a plurality of liquid cooling board on the casing, be equipped with main feed liquor runner in the liquid cooling board, main feed liquor runner's internal diameter by main inlet arrives return connection portion grow gradually. Compared with the prior art, the battery module with the liquid cooling device provided by the invention has the following advantages: firstly, the inner diameter of a main liquid inlet flow passage of the liquid cooling plate is gradually increased from the main liquid inlet to the backflow connecting part, so that each cooling flow passage connected with the main liquid inlet flow passage can realize good liquid circulation, the liquid cooling plate is tightly attached to the battery cell, uniform heat dissipation of each part of the battery cell is ensured, the temperature consistency of the battery cell is good, the reliability of the battery cell in use is improved, and the service life of the battery cell is prolonged.
Description
Technical Field
The present disclosure relates to battery modules, and particularly to a battery module with a liquid cooling device and a battery box using the same.
Background
The battery module can be understood as the lithium ion battery cell and through the combination of series-parallel connection mode, installs the battery cell that forms behind the battery cell control and management device additional and pack's intermediate product. The structure of the battery cell support, fixation and protection device has to play a role in supporting, fixing and protecting the battery cell, and can be summarized into 3 major items: mechanical strength, electrical properties, thermal properties and fault handling capability. Whether can well fix the electricity core position and protect it not take place the deformation of damaging performance, whether can avoid thermal runaway's propagation etc. will all be the standard of judging battery module quality.
The temperature environment in the battery pack has a great influence on the reliability, life and performance of the battery cell, and therefore, it is particularly important to maintain the temperature in the battery pack within a certain temperature range. The liquid cooling technology takes away heat generated by the battery cell through liquid convection heat transfer, and reduces the temperature of the battery cell. The liquid medium has high heat exchange coefficient, large heat capacity and high cooling speed, and has obvious effects of reducing the highest temperature and improving the temperature consistency of the battery pack, and meanwhile, the volume of the heat management system is relatively small. The liquid cooling system is flexible in form, a single battery cell or a module can be immersed in liquid, a cooling channel can be arranged between the battery cells, or a cooling plate is arranged at the bottom of the battery. Generally can be equipped with inlet channel among the current cooling plate, many cooling branch ways of being connected with inlet channel to and the liquid return passageway who communicates with many cooling branch ways, but the coolant liquid circulation efficiency among the cooling branch way far away from the inlet of inlet channel is low, has reduced the radiating efficiency of cooling plate, leads to electric core radiating effect poor.
Disclosure of Invention
The present invention provides a battery module and a battery box with a liquid cooling device to overcome the above-mentioned deficiencies of the prior art.
The battery module with the liquid cooling device provided by the invention adopts the main technical scheme that: the liquid cooling device comprises a shell, a plurality of electric cores and a liquid cooling device, wherein the electric cores are sequentially and transversely arranged in the shell, the liquid cooling device comprises a liquid inlet pipeline, a liquid return pipeline and a plurality of liquid cooling plates which are arranged on the shell, the liquid cooling plates are communicated with the liquid inlet pipeline and the liquid return pipeline, the liquid cooling plates are arranged between two adjacent electric cores, a main liquid inlet flow channel, a main liquid return flow channel and a plurality of cooling flow channels are arranged in the liquid cooling plates, the plurality of cooling flow channels are arranged between the main liquid inlet flow channel and the main liquid return flow channel and are communicated with the main liquid inlet flow channel and the main liquid return flow channel, one end of the main liquid inlet flow channel is provided with a main liquid inlet, the other end of the main liquid inlet flow channel is a backflow connecting part, and the inner diameter of the main liquid inlet flow channel is gradually increased from the main liquid inlet to the backflow connecting part; the contact area of the main liquid inlet flow channel, the main liquid return flow channel and the plurality of cooling flow channels with the battery core is 15% -40% of the surface area of the liquid cooling plate.
The battery module with the liquid cooling device further adopts the following auxiliary technical scheme:
the main liquid inlet flow channel is positioned above the main liquid return flow channel.
The liquid return device is characterized in that one end of the main liquid return flow channel is a main liquid return port, the other end of the main liquid return flow channel is an inflow connecting portion, and the backflow connecting portion is communicated with the inflow connecting portion through a connecting flow channel.
The cooling flow channel comprises a first cooling flow channel, a second cooling flow channel and a third cooling flow channel, and the first cooling flow channel, the second cooling flow channel and the third cooling flow channel are sequentially connected to a main liquid return flow channel from the main liquid inlet to the backflow connecting part.
The distance between the first cooling flow channel and the main liquid inlet is smaller than the distance between the second cooling flow channel and the main liquid inlet, and the distance between the second cooling flow channel and the main liquid inlet is smaller than the distance between the third cooling flow channel and the main liquid inlet.
And a flared part is arranged at the joint of the third cooling flow channel and the main liquid return flow channel.
The cooling flow channel is S-shaped.
The battery cell is a square battery cell.
The shell comprises a first side plate, a second side plate, a third side plate, a fourth side plate, a first bottom supporting strip plate and a second bottom supporting strip plate, wherein the first side plate is opposite to the third side plate, the second side plate is opposite to the fourth side plate, the first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected end to form a vertical through square barrel body, the bottom of the second side plate is connected with the first bottom supporting strip plate, the bottom of the fourth side plate is connected with the second bottom supporting strip plate, two ends of the first bottom supporting strip plate and two ends of the second bottom supporting strip plate are respectively connected with the first side plate and the third side plate, and a heat dissipation gap is formed between the first bottom supporting strip plate and the second bottom supporting strip plate.
And a liquid inlet pipe groove and a liquid return pipe groove are formed in the second side plate, and the liquid inlet pipeline and the liquid return pipeline are respectively arranged in the liquid inlet pipe groove and the liquid return pipe groove.
The second side plate is the same as the fourth side plate in structure.
A plurality of heat dissipation holes are formed in the first side plate, the second side plate, the third side plate and the fourth side plate.
The bottom of first curb plate is equipped with the connecting plate, the connecting plate with be equipped with the strengthening rib between the first curb plate, first hold in the palm end slat and second hold in the palm the end slat through the bolt with the connecting plate is connected.
The connecting plate and the first side plate are integrally formed
The first side plate and the third side plate are the same in structure.
Still including establishing the insulating support on casing upper portion, be equipped with a plurality of bearer bars and trough on the insulating support, be equipped with a plurality of pressure lines on the trough, press the line be one end with axis inslot wall connection, the other end of pressing the trough is the free end.
The main technical scheme adopted by the battery box provided by the invention is as follows: the battery module is electrically connected with the electric control assembly, the battery module comprises a shell, a plurality of electric cores and a liquid cooling device, the electric cores are sequentially and transversely arranged in the shell, the liquid cooling device comprises a liquid inlet pipeline, a liquid return pipeline and a plurality of liquid cooling plates arranged on the shell, the liquid cooling plates are communicated with the liquid inlet pipeline and the liquid return pipeline, the liquid cooling plates are arranged between two adjacent electric cores, a main liquid inlet channel, a main liquid return channel and a plurality of cooling channels are arranged in the liquid cooling plates, the cooling channels are arranged between the main liquid inlet channel and the main liquid return channel and are communicated with the main liquid inlet channel and the main liquid return channel, one end of the main liquid inlet channel is provided with a main liquid inlet, and the other end of the main liquid inlet channel is a backflow connecting part, the inner diameter of the main liquid inlet flow channel is gradually increased from the main liquid inlet to the reflux connecting part; the contact area of the main liquid inlet flow channel, the main liquid return flow channel and the plurality of cooling flow channels with the battery cell is 15% -40% of the surface area of the liquid cooling plate.
Compared with the prior art, the battery module with the liquid cooling device provided by the invention has the following advantages: firstly, the inner diameter of a main liquid inlet flow passage of the liquid cooling plate is gradually increased from a main liquid inlet to a backflow connecting part, so that each cooling flow passage connected with the main liquid inlet flow passage can realize good liquid flow circulation; secondly, liquid cooling device simple structure, convenient assembling, heat transfer medium from the inside runner of feed liquor pipeline reposition of redundant personnel to each liquid cooling board, then converge to liquid return pipeline from each liquid cooling board, take away the heat of electricity core periphery through the heat exchange, improve the radiating effect of whole battery module.
Compared with the prior art, the battery box provided by the invention has the following advantages: firstly, the inner diameter of a main liquid inlet flow passage of a liquid cooling plate is gradually increased from a main liquid inlet to a reflux connecting part, so that each cooling flow passage connected with the main liquid inlet flow passage can realize good liquid flow circulation; secondly, liquid cooling device simple structure, convenient assembling, heat transfer medium shunts to the inside runner of each liquid cold plate from the feed liquor pipeline, then converges to liquid return pipeline from each liquid cold plate, takes away the heat of electricity core periphery through the heat exchange, improves the radiating effect of whole battery module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an exploded view of a battery module with a liquid cooling device according to the present invention.
Fig. 2 is a top view of the liquid-cooled panel of the present invention.
Fig. 3 is a cross-sectional view a-a of fig. 2.
Fig. 4 is a structural view of a battery module with a liquid cooling device according to the present invention.
Fig. 5 is a structural state diagram in which the battery cell and the liquid-cooled plate are assembled together in the present invention.
Fig. 6 is a structural view of a second side plate in the present invention.
Fig. 7 is a structural view of the first side plate in the present invention.
Fig. 8 is a structural view of an insulating support in the present invention.
Fig. 9 is an enlarged view of B in fig. 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1 to 5, the embodiment of the battery module with a liquid cooling apparatus provided in the present invention includes a housing, a plurality of battery cells 2 and the liquid cooling apparatus, the plurality of battery cells 2 are sequentially and transversely arranged in the housing, the liquid cooling apparatus includes a liquid inlet pipeline 4, a liquid return pipeline 5 and a plurality of liquid cooling plates 3 arranged on the housing, the plurality of liquid cooling plates 3 are all communicated with the liquid inlet pipeline 4 and the liquid return pipeline 5, the liquid cooling plates 3 are arranged between two adjacent battery cells 2, a main liquid inlet channel 31, a main liquid return channel 32 and a plurality of cooling channels are arranged in the liquid cooling plates 3, the plurality of cooling channels are arranged between the main liquid inlet channel 31 and the main liquid return channel 32 and are communicated with the main liquid inlet channel 31 and the main liquid return channel 32, one end of the main liquid inlet channel 31 is provided with a main liquid inlet 311, and the other end is provided with a return connection portion 312, the inner diameter of the main liquid inlet channel 31 is gradually increased from the main liquid inlet 311 to the backflow connecting portion 312. The contact area of the main liquid inlet flow channel 31, the main liquid return flow channel 32 and the plurality of cooling flow channels with the battery core 2 is 15-40% of the surface area of the liquid cooling plate 3. This embodiment is preferably 23%. The main liquid inlet flow channel 31 is located above the main liquid return flow channel 32. And the two ends of the liquid cooling plate 3 are attached to the battery cells 2 positioned on the two sides of the liquid cooling plate 3. Firstly, the inner diameter of the main liquid inlet flow channel 31 of the liquid cooling plate 3 is gradually increased from the main liquid inlet 311 to the backflow connecting part 312, so that each cooling flow channel connected with the main liquid inlet flow channel 31 can realize good liquid flow circulation, the liquid cooling plate 3 is tightly attached to the electric core 2, the uniform heat dissipation of each part of the electric core 2 is ensured, the temperature consistency of the electric core 2 is good, the reliability of the electric core 2 in use is improved, and the service life of the electric core 2 is prolonged; secondly, liquid cooling device simple structure, convenient assembling, heat transfer medium from the inside runner of feed liquor pipeline 4 reposition of redundant personnel to each liquid cold plate 3, then converge to liquid return pipeline 5 from each liquid cold plate 3, take away the peripheral heat of electric core 2 through the heat exchange, improve the radiating effect of whole battery module.
Referring to fig. 3, according to the above embodiment of the present invention, one end of the main liquid return flow channel 32 is a main liquid return port 321, and the other end is an inlet connection portion 322, and the return connection portion 312 is communicated with the inlet connection portion 322 through the connection flow channel 33. The heat dissipation of the edge of the liquid cooling plate 3 is ensured, the main liquid inlet flow passage 31, the main liquid return flow passage 32 and the connecting passage form a U-shaped passage on the liquid cooling plate 3, and liquid flow is smooth. In the specific use process, the liquid cooling plate works simultaneously through the main liquid inlet flow channel 31, the main liquid return flow channel 32, the connecting flow channel 33 and the cooling flow channel inside to complete the heat exchange function of the liquid cooling plate 3.
Referring to fig. 3, according to the above-mentioned embodiment of the present invention, the cooling flow channels include a first cooling flow channel 34, a second cooling flow channel 35, and a third cooling flow channel 36, and the first cooling flow channel 34, the second cooling flow channel 35, and the third cooling flow channel 36 are sequentially connected to the main liquid return flow channel 32 between the main liquid inlet 311 and the backflow connection portion 312. That is, the distance between the first cooling flow channel 34 and the main liquid inlet 311 is smaller than the distance between the second cooling flow channel 35 and the main liquid inlet 311, and the distance between the second cooling flow channel 35 and the main liquid inlet 311 is smaller than the distance between the third cooling flow channel 36 and the main liquid inlet 311. The cooling flow channel is arranged on the liquid cooling plate 3 in the above mode, the process is simple, the liquid flow speed is high, and the temperature balance of the outer surface of the liquid cooling plate 3 can be met.
Referring to fig. 3, according to the above embodiment of the present invention, a flared portion 323 is provided at the connection between the third cooling channel 36 and the main liquid return channel 32. The flared portion 323 can increase the flow rate of the liquid in the third cooling flow channel 36, and prevent the liquid in the connecting flow channel 33 from flowing back to the third cooling flow channel 36, which affects the temperature balance of the liquid-cooled plate 3.
Referring to fig. 3, according to the above-described embodiment of the present invention, the cooling flow channel has an S-shape. The length of extension cooling channel has enlarged the inside heat exchange efficiency of whole liquid cooling board 3, and then has improved and has contacted radiating efficiency between electric core 2.
Referring to fig. 1 and 5, according to the above-described embodiment of the present invention, the battery cell 2 is a square battery cell 2. The liquid cooling plate 3 can be well attached to the direction battery cell 2, and the heat dissipation efficiency of the battery module is guaranteed to the maximum extent.
Referring to fig. 1, 4, 6 and 7, according to the above-described embodiment of the present invention, the case includes a first side plate 11, a second side plate 12, a third side plate 13, a fourth side plate 14, a first bottom strip plate 121 and a second bottom strip plate 141, the first side plate 11 and the third side plate 13 are opposite, the second side plate 12 and the fourth side plate 14 are opposite, the first side plate 11, the second side plate 12, the third side plate 13 and the fourth side plate 14 are sequentially connected end to form a square cylinder body which is through up and down, the bottom of the second side plate 12 is connected to the first bottom strip 121, the bottom of the fourth side plate 14 is connected to the second bottom strip 141, both ends of the first and second bottom-supporting strip plates 121 and 141 are respectively connected with the first and third side plates 11 and 13, a heat dissipation gap is formed between the first bottom strip plate 121 and the second bottom strip plate 141. The shell is simple in structure and convenient to assemble, the battery cell 2 is sequentially arranged between the liquid cooling plates 3 during assembly, the first side plate 11, the second side plate 12, the third side plate 13 and the fourth side plate 14 exert certain pretightening force through the tool fixtures, and the first side plate 11, the second side plate 12, the third side plate 13 and the fourth side plate 14 are sequentially connected and fixed through bolts, so that the effective fit between the liquid cooling plates 3 and the battery cell 2 is guaranteed.
Referring to fig. 1, 4 and 6, according to the above-mentioned embodiment of the present invention, the second side plate 12 is provided with a liquid inlet pipe groove 122 and a liquid return pipe groove 123, and the liquid inlet pipe 4 and the liquid return pipe 5 are respectively provided in the liquid inlet pipe groove 122 and the liquid return pipe groove 123. The liquid inlet pipe groove 122 and the liquid return pipe groove 123 have good protection effects with the liquid inlet pipeline 4 and the liquid return pipeline 5, and damage caused by the fact that the liquid inlet pipeline 4 and the liquid return pipeline 5 are exposed outside is avoided.
Referring to fig. 1, the second side plate 12 is identical in structure to the fourth side plate 14 according to the above-described embodiment of the present invention. The difficulty caused by limited layout space position in the battery box can be effectively avoided.
Referring to fig. 1, 4, 6 and 7, according to the above embodiment of the present invention, a plurality of heat dissipation holes 101 are formed in each of the first side plate 11, the second side plate 12, the third side plate 13 and the fourth side plate 14. The peripheral heat dissipation of the battery module is guaranteed, and the heat dissipation efficiency of the battery module is improved.
Referring to fig. 1, 4, 6 and 7, according to the above embodiment of the present invention, the bottom of the first side plate 11 is provided with a connecting plate 111, a reinforcing rib 112 is provided between the connecting plate 111 and the first side plate 11, and the first bottom strip plate 121 and the second bottom strip plate 141 are connected to the connecting plate 111 through bolts. Being connected first end slat 121 and second end slat 141 of holding in the palm through bolt and connecting plate 111 has guaranteed first end slat 121 of holding in the palm and the bearing capacity degree of second end slat 141 of holding in the palm, stamping forming has strengthening rib 112 simultaneously between connecting plate 111 and first curb plate 11, has guaranteed the mechanical strength between connecting plate 111 and the first curb plate 11, connecting plate 111 with first curb plate 11 is the integrated into one piece structure, first curb plate 11 with third curb plate 13 structure is the same.
Referring to fig. 1, 4, 8, and 9, according to the above-mentioned embodiment of the present invention, the present invention further includes an insulating support 6 disposed on the upper portion of the housing, the insulating support 6 is provided with a plurality of protection frames 61 and a wiring groove 62, the wiring groove 62 is provided with a plurality of pressing lines 63, one end of each pressing line 63 is connected to the inner wall of the axial groove, and the other end of each pressing line is a free end. Insulating support 6 direct mount plays and walks line and fix with the pencil at 2 positive negative pole terminal surfaces of electric core, the copper bar hasp is located in the protective frame 61, copper bar overlap joint among the protection battery module, trough 62 is used for the pencil to walk the line, and line ball 63 is spacing in trough 62 with the pencil, walks the line convenience, and is not in disorder. The insulating support 6 is connected to the second side plate 12 and the fourth side plate 14 by screws.
According to the embodiment of the battery box provided by the invention, the battery box comprises a box body, a plurality of battery modules and an electric control assembly, wherein the battery modules and the electric control assembly are arranged in the box body, the battery modules are electrically connected with the electric control assembly, the box body and the electric control assembly are mature technologies in the prior art and are not described in detail herein, and the battery modules are the battery modules in the embodiment. Firstly, the inner diameter of the main liquid inlet flow channel 31 of the liquid cooling plate 3 is gradually increased from the main liquid inlet 311 to the backflow connecting part 312, so that each cooling flow channel connected with the main liquid inlet flow channel 31 can realize good liquid flow circulation, the liquid cooling plate 3 is tightly attached to the electric core 2, the uniform heat dissipation of each part of the electric core 2 is ensured, the temperature consistency of the electric core 2 is good, the reliability of the electric core 2 in use is improved, and the service life of the electric core 2 is prolonged; secondly, liquid cooling device simple structure, convenient assembling, heat transfer medium from the inside runner of feed liquor pipeline 4 reposition of redundant personnel to each liquid cold plate 3, then converge to liquid return pipeline 5 from each liquid cold plate 3, take away the peripheral heat of electric core 2 through the heat exchange, improve the radiating effect of whole battery module.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a battery module with liquid cooling device, includes casing, a plurality of electric core and liquid cooling device, and is a plurality of electric core transverse arrangement is in proper order in the casing, the liquid cooling device is including establishing liquid inlet pipeline, liquid return pipeline and a plurality of liquid cooling board on the casing, it is a plurality of the liquid cooling board all with liquid inlet pipeline with liquid return pipeline intercommunication, the liquid cooling board is established between two adjacent electric cores, be equipped with main feed liquor runner, main liquid return runner and many cooling runner in the liquid cooling board, many cooling runner establishes main feed liquor runner with between the main liquid return runner, and the intercommunication main feed liquor runner with main liquid return runner, its characterized in that: the one end of main feed liquor runner is for being equipped with main inlet, and the other end is backflow connecting portion, main feed liquor runner' S internal diameter by main inlet extremely backflow connecting portion grow gradually, the cooling runner is the S-shaped, electric core is square electric core.
2. The battery module with liquid cooling device as set forth in claim 1, wherein: one end of the main liquid return flow channel is a main liquid return port, the other end of the main liquid return flow channel is an inflow connecting portion, and the backflow connecting portion is communicated with the inflow connecting portion through a connecting flow channel.
3. The battery module with liquid cooling device as set forth in claim 1, wherein: the cooling flow channel comprises a first cooling flow channel, a second cooling flow channel and a third cooling flow channel, and the first cooling flow channel, the second cooling flow channel and the third cooling flow channel are sequentially connected to a main liquid return flow channel from the main liquid inlet to the backflow connecting part.
4. The battery module with liquid cooling device of claim 3, wherein: and a flared part is arranged at the joint of the third cooling flow channel and the main liquid return flow channel.
5. The battery module with liquid cooling device as set forth in claim 1, wherein: the shell comprises a first side plate, a second side plate, a third side plate, a fourth side plate, a first bottom supporting strip plate and a second bottom supporting strip plate, wherein the first side plate is opposite to the third side plate, the second side plate is opposite to the fourth side plate, the first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected end to form an upper and lower through square cylinder, the bottom of the second side plate is connected with the first bottom supporting strip plate, the bottom of the fourth side plate is connected with the second bottom supporting strip plate, two ends of the first bottom supporting strip plate and two ends of the second bottom supporting strip plate are respectively connected with the first side plate and the third side plate, and a heat dissipation gap is formed between the first bottom supporting strip plate and the second bottom supporting strip plate.
6. The battery module with liquid cooling device as set forth in claim 5, wherein: and a liquid inlet pipe groove and a liquid return pipe groove are formed in the second side plate, and the liquid inlet pipeline and the liquid return pipeline are respectively arranged in the liquid inlet pipe groove and the liquid return pipe groove.
7. The battery module with liquid cooling device as set forth in claim 1, wherein: still including establishing the insulating support on casing upper portion, be equipped with a plurality of bearer bars and trough on the insulating support, be equipped with a plurality of pressure lines on the trough, press the line be one end with the trough inner wall connection, the other end of pressing the line is the free end.
8. The utility model provides a battery box, includes the box, establishes a plurality of battery module and automatically controlled subassembly in the box, the battery module with automatically controlled subassembly electricity is connected, its characterized in that: the battery module according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911206635.6A CN110890494B (en) | 2019-11-29 | 2019-11-29 | Battery module and battery box with liquid cooling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911206635.6A CN110890494B (en) | 2019-11-29 | 2019-11-29 | Battery module and battery box with liquid cooling device |
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| Publication Number | Publication Date |
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| CN110890494A CN110890494A (en) | 2020-03-17 |
| CN110890494B true CN110890494B (en) | 2022-07-22 |
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