CN117013176B - Battery cell rack - Google Patents
Battery cell rack Download PDFInfo
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- CN117013176B CN117013176B CN202311023649.0A CN202311023649A CN117013176B CN 117013176 B CN117013176 B CN 117013176B CN 202311023649 A CN202311023649 A CN 202311023649A CN 117013176 B CN117013176 B CN 117013176B
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- pipeline
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- 238000001816 cooling Methods 0.000 claims abstract description 195
- 239000007788 liquid Substances 0.000 claims abstract description 158
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 147
- 239000000110 cooling liquid Substances 0.000 claims abstract description 23
- 239000002775 capsule Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 10
- 230000017525 heat dissipation Effects 0.000 abstract description 9
- 238000004146 energy storage Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
-
- 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
- H01M10/656—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
-
- 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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
-
- 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 & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention belongs to the technical field of energy storage batteries, and discloses an electric core frame which comprises a cooling circulation pipeline, a liquid cooling plate group and a pre-tightening device. The cooling circulation pipeline comprises a water inlet pipeline and a water return pipeline, the liquid cooling plate group is arranged between the water inlet pipeline and the water return pipeline, cooling liquid sequentially flows through the water inlet pipeline, the liquid cooling plate group and the water return pipeline, and an accommodating space for accommodating the battery cell is formed in the liquid cooling plate group. A pre-tightening device is arranged between two adjacent electric cores, the pre-tightening device can deform and apply pre-tightening force for overcoming the expansion force of the electric cores, and the magnitude of the pre-tightening force can be adjusted by changing the deformation degree of the pre-tightening device. The battery cell frame not only can improve the cooling area and the heat dissipation efficiency and avoid the situation of overlarge temperature difference of the battery cells, but also provides pretightening force for resisting the expansion of the battery cells, is convenient for subsequent maintenance or replacement of the battery cells, and improves the cycle life of the battery cells and the system.
Description
Technical Field
The invention relates to the technical field of energy storage batteries, in particular to a battery cell rack.
Background
The complete electrochemical energy storage system mainly comprises a battery pack, a battery management system, an energy storage converter and other electrical equipment, wherein the battery system is the most main component of the energy storage system. The assembly of the battery system is generally performed in three steps: (1) the single battery cells are combined into a battery module through serial-parallel connection; (2) the battery module forms a battery box; (3) The battery box is mounted on a battery rack, and the battery boxes are connected in series to form a battery cluster; and (4) connecting the battery clusters in parallel to form a battery system. The battery system can generate a large amount of heat in the charge and discharge process, the temperature is usually reduced by adopting a forced air cooling or liquid cooling mode, and the liquid cooling mode usually adopts a liquid cooling plate, so that the heat dissipation, the heating and the uniform temperature management of the battery are realized through the circulation of fluid in the cold plate.
However, the existing battery system generally has the following two problems: firstly, the liquid cooling plate is usually arranged at the bottom of the battery box, so that the heat dissipation area is small, the heat dissipation efficiency is low, the temperature difference between the bottom and the top of the battery is large, the service life of the battery is influenced, and potential safety hazards exist in the use process; secondly, in order to resist the expansion force of the battery cell continuously increasing in the whole life cycle and improve the cycle life of the battery cell and the system, a pretightening force is generally required to be applied to the battery in the stage of assembling the battery cell into a module or in the stage of directly assembling the battery cell into a battery box, however, when any single battery cell fails, the whole battery box needs to be replaced due to the arrangement, and the replacement steps are complicated, the disassembly, assembly and maintenance are difficult, and the maintenance cost is high.
Therefore, a cell rack is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a battery cell rack which is used for supporting and cooling a battery cell and has high cooling efficiency and convenient assembly and disassembly.
To achieve the purpose, the invention adopts the following technical scheme:
A cell holder, comprising: the cooling circulation pipeline comprises a water inlet pipeline and a water return pipeline; the liquid cooling plate set is arranged between the water inlet pipeline and the water return pipeline, and the cooling liquid sequentially flows through the water inlet pipeline, the liquid cooling plate set and the water return pipeline, and an accommodating space for accommodating the battery cell is formed in the liquid cooling plate set; the pre-tightening device is arranged between two adjacent electric cores, can deform and apply pre-tightening force for overcoming the expansion force of the electric cores to the electric cores, and can adjust the magnitude of the pre-tightening force by changing the deformation degree of the pre-tightening device.
Preferably, the liquid cooling plate group comprises a plurality of liquid cooling plates, the plurality of liquid cooling plates are arranged side by side along a first direction, a containing subspace for containing two electric cores is formed between the adjacent liquid cooling plates, and liquid cooling channels for circulating cooling liquid and communicating with the water inlet pipeline and the water return pipeline are formed in each liquid cooling plate.
Preferably, the liquid cooling plate includes a cooling housing including a first end plate, a second end plate and a support plate which are connected in an i-shape and communicate with each other, the support plate being connected between the first end plate and the second end plate.
Preferably, the liquid cooling plate further comprises a guide plate, and the guide plate is arranged in the cooling shell, so that the cooling shell internally forms the liquid cooling flow channel in a serpentine shape.
Preferably, the liquid cooling plate group further comprises a connecting piece, and adjacent liquid cooling plates are connected through mortise and tenon joints of the connecting piece.
Preferably, the number of the liquid cooling plate groups is multiple, and the multiple liquid cooling plate groups are arranged at intervals along the second direction; the water inlet pipeline comprises a main water inlet pipe and a plurality of branch water inlet pipes, the branch water inlet pipes are arranged on the main water inlet pipe in parallel, the branch water inlet pipes are arranged in one-to-one correspondence with the liquid cooling plate groups, and all the liquid cooling plates included in each liquid cooling plate group are communicated with the corresponding branch water inlet pipes; and/or, the water return pipeline comprises a main water return pipe and a plurality of branch water return pipes, the plurality of branch water return pipes are arranged in one-to-one correspondence with the plurality of liquid cooling plate groups, and all liquid cooling plates included by each liquid cooling plate group are communicated with the corresponding branch water return pipes.
Preferably, the cell rack further comprises a base, and the base is used for supporting the liquid cooling plate group and the cooling circulation pipeline.
Preferably, the base comprises a supporting table top, and a limiting plate for assisting in positioning the liquid cooling plate group is arranged on the side edge of the supporting table top; and/or, a first bearing boss for bearing the water inlet pipeline is arranged on the supporting table surface.
Preferably, the pre-tightening device is an air bag; and/or, the pre-tightening device is a liquid sac.
Preferably, the cell rack further comprises a heat conducting base plate, and the heat conducting base plate is arranged between the cell and the liquid cooling plate group.
The beneficial effects are that:
The invention provides a battery cell rack which comprises a cooling circulation pipeline, a liquid cooling plate group and a pre-tightening device. The cooling circulation pipeline comprises a water inlet pipeline and a water return pipeline, the liquid cooling plate group is arranged between the water inlet pipeline and the water return pipeline, cooling liquid sequentially flows through the water inlet pipeline, the liquid cooling plate group and the water return pipeline, and an accommodating space for accommodating the battery cell is formed in the liquid cooling plate group. The pretightening device is arranged between two adjacent electric cores or between the liquid cooling plate group and the electric core, and can deform and apply pretightening force for overcoming the expansion force of the electric core to the electric core, and the pretightening force can be adjusted by changing the deformation degree of the pretightening device. The battery cell frame not only can improve the cooling area and the heat dissipation efficiency and avoid the situation of overlarge temperature difference of the battery cells, but also provides pretightening force for resisting the expansion of the battery cells, is convenient for subsequent maintenance or replacement of the battery cells, and improves the cycle life of the battery cells and the system. Meanwhile, the battery cell rack is formed by assembling the liquid cooling plate groups, the liquid cooling plate groups play a role in supporting and accommodating the battery cells, and a bracket is not required to be additionally manufactured, so that the structure of the battery cell rack is more compact, and the space utilization rate is higher.
Drawings
Fig. 1 is an overall schematic diagram of a cell holder provided by the present invention;
fig. 2 is a schematic structural diagram of a cooling circulation pipeline of the battery cell rack provided by the invention;
Fig. 3 is a schematic structural diagram of a pretensioning device for a cell holder according to the present invention;
Fig. 4 is a schematic diagram of a part of a structure of a liquid cooling plate set of a cell rack provided by the invention;
Fig. 5 is a schematic structural diagram of a liquid cooling plate of the battery cell rack provided by the invention;
Fig. 6 is a longitudinal sectional view of a liquid cooling plate of the cell rack provided by the invention;
fig. 7 is a schematic structural diagram of a base of the battery cell rack provided by the invention.
In the figure:
100. A battery cell;
1. a cooling circulation line;
11. A water inlet pipeline; 111. a main water inlet pipe; 112. a water inlet pipe; 1121. a second water inlet; 113. a main water inlet pipe; 12. a water return line; 121. a main return pipe; 122. a branch return pipe; 1221. a second water return port; 123. a main return pipe; 13. a hose;
2. a liquid cooling plate group;
21. a liquid cooling plate; 211. a deflector; 212. a first end plate; 213. a second end plate; 214. a support plate; 215. a first water inlet; 216. a first water return port; 217. an avoidance groove; 218. a groove;
22. a first connector; 23. a second connector;
3. a pre-tightening device; 31. a bladder body; 32. a capsule mouth; 33. reinforcing strips;
4. a base; 41. supporting the table top; 411. a limiting plate; 412. a first support boss; 42. supporting feet; 43. and a fixing plate.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
The invention provides a battery cell rack which can accommodate a plurality of battery cells and provide supporting and cooling functions for the battery cells.
Specifically, as shown in fig. 1, the battery cell rack comprises a cooling circulation pipeline 1, a liquid cooling plate group 2 and a pre-tightening device 3, wherein the cooling circulation pipeline 1 comprises a water inlet pipeline 11 and a water return pipeline 12, the liquid cooling plate group 2 is arranged between the water inlet pipeline 11 and the water return pipeline 12, cooling liquid sequentially flows through the water inlet pipeline 11, the liquid cooling plate group 2 and the water return pipeline 12, and the cooling liquid is used for providing a cold source for the cooling circulation pipeline 1, so that the purpose of reducing the temperature of the battery cell 100 is achieved. An accommodating space for accommodating the battery cell 100 is formed between the liquid cooling plate groups 2, at least two surfaces of the battery cell 100 placed in the accommodating space are in contact with the liquid cooling plate groups 2, and the cooling liquid transfers heat through the liquid cooling plate groups 2 to take away heat on the contact surface of the battery cell 100. The arrangement of the liquid cooling plate group 2 can effectively improve the contact area of the battery cell 100 and the liquid cooling plate group 2, reduce the heat of the battery cell 100 and improve the heat dissipation efficiency of the battery cell 100; meanwhile, at least two surfaces of the battery cell 100 can be in contact with the liquid cooling plate set 2, so that the situation that the service life of the battery is reduced due to overlarge temperature difference at two sides of the battery cell 100 when single-side cooling occurs is avoided.
It should be noted that, in some embodiments, the plurality of battery cells 100 can be placed in the accommodating space, and the plurality of battery cells 100 are connected in series by using a quick-plug structure. It should be further noted that, in some embodiments, the number of the liquid cooling plate sets 2 is multiple, and the multiple liquid cooling plate sets 2 are disposed at intervals along the second direction, as shown in fig. 1, where the second direction is a vertical direction.
Further, in order to reduce the friction between the electric core 100 and the liquid cooling plate group 2 and reduce the difficulty of replacing the electric core 100, a heat conducting base plate is further arranged between the electric core 100 and the liquid cooling plate group 2, the heat exchanging effect between the electric core 100 and the liquid cooling plate group 2 is not affected by the heat conducting base plate, the friction between the electric core 100 and the liquid cooling plate group 2 can be reduced, the electric core 100 can be conveniently taken, and the electric core 100 is protected from being damaged due to extrusion in the replacement and maintenance process.
In the whole life cycle of the battery cell 100, the expansion force of the battery cell 100 is continuously increased, and the expansion force not only affects the service life and the safety performance of the battery cell 100, but also reduces the distance between the battery cells 100, so that the battery cell 100 is difficult to take, place and replace. When a certain battery cell 100 fails, the whole battery box needs to be replaced, and the replacement steps are complicated, the disassembly, assembly and maintenance are difficult, and the maintenance difficulty and the maintenance cost are greatly improved.
Therefore, in order to resist the expansion force and improve the cycle life of the battery cells 100 and the battery system, a pretensioner 3 is further provided between the battery cells 100. The pretensioning device 3 is arranged between two adjacent electric cores 100, the pretensioning device 3 can deform and apply pretensioning force which is adaptive to the expansion force of the electric cores 100 and is used for overcoming the expansion force to the electric cores 100, and the magnitude of the pretensioning force can be adjusted by changing the deformation degree of the pretensioning device 3.
Specifically, in the initial stage of use of the battery, the pretightening force generated by the pretightening device 3 can be properly reduced, so that the capacity of the battery cell 100 is prevented from being attenuated by accelerating after the diaphragm of the battery cell 100 is extruded; after the battery is used for a period of time, the pretightening force generated by the pretightening device 3 can be properly increased, so that the battery cell 100 can be in closer contact with the liquid cooling plate group 2, the stress is more uniform, and the cooling efficiency of the liquid cooling plate group 2 is effectively improved; in the subsequent process of replacing the battery cells 100, the distance between the battery cells 100 can be increased by reducing the pretightening force, so that the battery cells 100 can be conveniently taken out and replaced, the maintenance difficulty and the maintenance cost are reduced, and the cycle life of the battery system is prolonged.
In some embodiments, as shown in fig. 3, the pretensioning device 3 is a bladder, in some embodiments a balloon, in some other embodiments a bladder, of course, in some embodiments both a bladder and a balloon may be provided. The bladder comprises a bladder body 31 and a bladder mouth 32 arranged on the bladder body 31, wherein the bladder body 31 is made of elastic material, and preferably, the material of the bladder body 31 is PVC. The adjustment of the pretightening force is realized through the volume change of the bag body 31, the pressure inside the bag body 31 can be increased by filling incombustible and noncorrosive liquid or gas into the inner bag body 31 through the bag mouth 32, the volume of the bag body 31 is expanded and increased along with the increase, the pretightening force is generated between the bag body 31 and the electric core 100, and the electric core 100 and the liquid cooling plate group 2 are tightly pressed together. In order to improve the use strength of the bag body 31 and prevent leakage of internal liquid or gas, reinforcing strips 33 are further pressed at the peripheral edges of the bag body 31. In some other embodiments, the pretensioning device 3 may also be a hydraulic lever or a spring.
In order to increase the contact area between the battery cell 100 and the liquid cooling plate group 2 and increase the cooling efficiency of the battery cell 100, as shown in fig. 1 and 4, the liquid cooling plate group 2 includes a plurality of liquid cooling plates 21, and the plurality of liquid cooling plates 21 are arranged side by side along a first direction, which is a horizontal direction shown in fig. 1, a containing subspace for containing the battery cell 100 is formed between adjacent liquid cooling plates 21, and a liquid cooling flow passage through which a cooling liquid flows and which is communicated with both the water inlet pipeline 11 and the water return pipeline 12 is formed in each liquid cooling plate 21. The cooling liquid flows through the liquid cooling plates 21 arranged side by side respectively, so that the plurality of battery cells 100 can be cooled simultaneously, the circulation speed of the cooling liquid is improved, and the battery cells 100 can dissipate heat faster and have higher heat dissipation efficiency.
Further, in order to realize the communication between the liquid cooling plate 21 and the water inlet pipeline 11 and the water return pipeline 12, a first water inlet 215 and a first water return port 216 are formed in the liquid cooling plate 21, wherein the first water inlet 215 is communicated with the water inlet pipeline 11, and the first water return port 216 is communicated with the water return pipeline 12. In some embodiments, the first water inlet 215 is formed on one side wall surface of the liquid cooling plate 21, and the first water return 216 is formed on the other side wall surface of the liquid cooling plate 21. In some embodiments, a water inlet connector and a water outlet connector are further disposed at the first water inlet 215 and the first water return 216, respectively, and the water inlet connector and the water outlet connector may be connected to the side wall of the liquid cooling plate 21 by welding or screw fastening.
As shown in fig. 5 and 6, the liquid cooling plate 21 includes a cooling housing including a first end plate 212, a second end plate 213, and a support plate 214 connected in an i-shape and communicating with each other, the support plate 214 being connected between the first end plate 212 and the second end plate 213. The first end plate 212, the second end plate 213 and the supporting plate 214 of the two adjacent liquid cooling plates 21 are surrounded to form a containing subspace, when two electric cores 100 are placed in the containing subspace, three faces of each electric core 100 can be contacted with the liquid cooling plate 21, compared with the prior art that the liquid cooling plates are contacted with one face of the electric core only, the electric core frame can cool the electric core 100 more sufficiently and uniformly, the heat dissipation efficiency and the heat dissipation effect are greatly improved, and the service life of the electric core 100 is prolonged.
Continuing as shown in fig. 5 and 6, in order to improve the coverage area of the liquid cooling flow channel, improve the radiating effect, the liquid cooling plate 21 further comprises a guide plate 211, the guide plate 211 is arranged in the cooling shell, so that the inside of the cooling shell forms a serpentine liquid cooling flow channel, the guide plate 211 is arranged to provide trend for the flowing route of the cooling liquid, the coverage area of the cooling liquid in the cooling shell is effectively increased, the heat conduction efficiency between the cooling liquid and the battery cell 100 is improved, and the cooling effect of the liquid cooling plate 21 is further improved. In some embodiments, the cooling housing and the baffle 211 are integrally formed by extrusion, and a flow channel notch is formed at one end of the formed baffle 211, and the material of the cooling housing may be selected from aluminum extrusion.
In order to form serpentine liquid cooling channels inside the cooling housing, the guide plates 211 are staggered inside the support plate 214 to form an "S" shape for the liquid cooling channels, and in some other embodiments, the guide plates 211 may be spirally configured to form a spiral shape for the liquid cooling channels.
In order to realize the connection between the plurality of liquid cooling plates 21, the liquid cooling plate set 2 further comprises a connecting piece, and the adjacent liquid cooling plates 21 are connected through mortise and tenon joints of the connecting piece. As shown in fig. 6, a groove 218 is formed on the liquid cooling plate 21, the groove 218 is formed on the side walls of the first end plate 212 and the second end plate 213 of the liquid cooling plate 21, the groove 218 extends along the length direction of the first end plate 212 and the second end plate 213, and the connecting piece is arranged in the space formed by combining the grooves 218 of two or four liquid cooling plates 21 in a penetrating manner so as to connect the plurality of liquid cooling plates 21.
As shown in fig. 4, the connecting members include a first connecting member 22 and a second connecting member 23, the second connecting member 23 is a long rod extending along the length direction of the liquid cooling plate 21, a groove 218 with a V-shaped longitudinal section is formed on the upper surface of the second connecting member 23, a rectangular protrusion is formed on the lower surface, the lower surfaces of the two second connecting members 23 are oppositely arranged to form the first connecting member 22, the first connecting member 22 is a long rod with an i-shape, and the lower surface and the upper surface of the first connecting member 22 are symmetrically arranged.
As further shown in fig. 4, the second connecting piece 23 is used for connecting two liquid cooling plates 21 arranged side by side, and the second connecting piece 23 penetrates into a space formed by grooves 218 of the two liquid cooling plates 21 to realize connection of the two liquid cooling plates 21. The first connecting piece 22 is used for connecting four liquid cooling plates 21, two liquid cooling plates 21 that set up side by side are a set of, and with two sets of liquid cooling plates 21 range upon range of setting, penetrate first connecting piece 22 in the space that recess 218 of four liquid cooling plates 21 formed again to realize the combination connection of four liquid cooling plates 21.
The liquid cooling plates 21 can be detachably arranged through connecting pieces, the liquid cooling plates 21 can be freely combined and assembled and disassembled according to actual use conditions, the length of the liquid cooling plate group 2 can be determined according to requirements, and the degree of freedom and the degree of convenience of the battery cell rack are greatly improved; the liquid cooling plate 21 provides supporting and cooling functions simultaneously, replaces the structure of arranging the liquid cooling plate on the traditional battery cell frame, can save the step of independently manufacturing the battery cell frame, and can enable the structure of the battery cell frame to be more compact and the space utilization rate to be higher.
In order to fill the liquid cooling plate 21 with the cooling liquid, as shown in fig. 1 and 2, the water inlet pipe 11 includes a main water inlet pipe 111 and a branch water inlet pipe 112, a plurality of branch water inlet pipes 112 are parallel arranged on the main water inlet pipe 111 along the second direction, a plurality of branch water inlet pipes 112 are arranged in one-to-one correspondence with a plurality of liquid cooling plate groups 2, and all liquid cooling plates 21 included in each liquid cooling plate group 2 are communicated with the corresponding branch water inlet pipes 112. Specifically, the water-dividing pipes 112 extend along the first direction, and a plurality of second water inlets 1121 are formed in each water-dividing pipe 112 along the first direction, and each second water inlet 1121 is respectively communicated with the first water inlet 215 of one liquid cooling plate 21.
The water return pipeline 12 comprises a main water return pipe 121 and a branch water return pipe 122, a plurality of branch water return pipes 122 are arranged on the main water return pipe 121 in parallel along the second direction, the plurality of branch water return pipes 122 are arranged in one-to-one correspondence with the plurality of liquid cooling plate groups 2, and all liquid cooling plates 21 included in each liquid cooling plate group 2 are communicated with the corresponding branch water return pipes 122. Specifically, the water-dividing and returning pipes 122 extend along the first direction, and a plurality of second water returning ports 1221 are formed in each water-dividing and returning pipe 122 along the first direction, and each second water returning port 1221 is respectively communicated with the first water returning port 216 of one liquid cooling plate 21. In some embodiments, the second water inlet 1121 is connected to the first water inlet 215 by a hose 13, and the second water return 1221 is connected to the first water return 216 by a hose 13.
The cooling liquid flows into the plurality of branch water inlet pipes 112 in a split manner through the main water inlet pipe 111, the cooling liquid in each branch water inlet pipe 112 flows into the liquid cooling plate 21 through the second water inlet 1121, the hose 13 and the first water inlet 215 in sequence, after the cooling liquid exchanges heat with the battery cell 100 in the liquid cooling plate 21, the cooling liquid flows into the branch water return pipe 122 through the first water return port 216, the hose 13 and the second water return port 1221 in sequence, and the cooling liquid in the plurality of branch water return pipes 122 is converged in the main water return pipe 121, so that heat exchange and cooling are completed.
In some embodiments, the main water inlet pipe 111 and the main water return pipe 121 are round pipes, and the sub water inlet pipe 112 and the sub water return pipe 122 are rectangular pipes. It should be noted that, water is generally selected as the cooling liquid, and a main water inlet pipe 113 and a main water return pipe 123 are disposed on the main water inlet pipe 111 and the main water return pipe 121, and in some embodiments, the main water inlet pipe 113 and the main water return pipe 123 are disposed in a trench dug out from the ground. In some other embodiments, the main water inlet pipe 113 and the main water return pipe 123 may also be disposed below the main water inlet pipe 111 and the main water return pipe 121, respectively.
Further, as shown in fig. 5, in order to avoid interference between the split water inlet pipe 112 and the split water return pipe 122 and the liquid cooling plate 21, the lengths of the first end plate 212 and the second end plate 213 of the liquid cooling plate 21 are smaller than those of the supporting plate 214, so that the avoidance grooves 217 are formed at one end of the first end plate 212 and one end of the second end plate 213, and when the liquid cooling plates 21 form the liquid cooling plate group 2, the avoidance grooves 217 are also connected side by side and form avoidance spaces, and the avoidance spaces can stagger the positions of the split water inlet pipe 112 and the split water return pipe 122, so that the liquid cooling plate group 2 can be placed on the split water inlet pipe 112 and the split water return pipe 122, and normal use of the split water inlet pipe 112 and the split water return pipe 122 is not affected.
In order to improve the installation strength of the battery cell rack, as shown in fig. 7, the battery cell rack is further provided with a base 4, and the base 4 provides a supporting function for the cooling circulation pipeline 1 and the liquid cooling plate group 2.
As further shown in fig. 7, the base 4 includes a support deck 41 and support feet 42. The side of supporting table 41 is provided with limiting plate 411 that supplementary liquid cooling board group 2 was fixed a position, and the liquid cooling board group 2 that is located the electric core frame lower extreme is placed on supporting table 41, and liquid cooling board group 2 is fixed a position through limiting plate 411.
In some embodiments, the supporting table 41 is further provided with a first supporting boss 412 for placing the split water inlet pipe 112, and the first supporting boss 412 provides a supporting function for the split water inlet pipe 112, so as to prevent the split water inlet pipe 112 from being cracked or broken due to gravity after being filled with the cooling liquid.
Of course, in some embodiments, the supporting table 41 may be provided with only the limiting plate 411, in some other embodiments, the supporting table 41 may be provided with only the first supporting boss 412, and the specific structure may be adjusted according to the use requirement. Further, a fixing plate 43 may be further provided under each supporting leg 42, the fixing plate 43 being for fixing the base 4 on the ground.
In some embodiments, the support table 41 may be a plate-type structure, i.e. the rigid plate is directly disposed on the support leg 42, and in some other embodiments, the support table 41 may be a combination of a frame-type structure and a plate-type structure, i.e. a support frame is disposed on the support leg 42, and the rigid plate is disposed on the support frame. In order to reduce the cost and ensure the strength of the base 4, the support legs 42 and the frame structure are generally made of square steel.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (8)
1. A cell holder, comprising:
The cooling circulation pipeline (1), the cooling circulation pipeline (1) comprises a water inlet pipeline (11) and a water return pipeline (12);
The liquid cooling plate set (2), the liquid cooling plate set (2) is arranged between the water inlet pipeline (11) and the water return pipeline (12), the cooling liquid sequentially flows through the water inlet pipeline (11), the liquid cooling plate set (2) and the water return pipeline (12), and an accommodating space for accommodating the battery cell (100) is formed in the liquid cooling plate set (2);
The pre-tightening device (3) is arranged between two adjacent electric cores (100), the pre-tightening device (3) can deform and apply a pre-tightening force for overcoming the expansion force of the electric cores (100) to the electric cores (100), and the magnitude of the pre-tightening force can be adjusted by changing the deformation degree of the pre-tightening device (3); the pre-tightening device (3) is a capsule, and the capsule comprises a capsule body (31) and a capsule nozzle (32) arranged on the capsule body (31);
The liquid cooling plate group (2) comprises a plurality of liquid cooling plates (21), the liquid cooling plates (21) are arranged side by side along a first direction, a containing subspace for containing two electric cores (100) is formed between the adjacent liquid cooling plates (21), and a liquid cooling runner which is used for circulating cooling liquid and is communicated with the water inlet pipeline (11) and the water return pipeline (12) is formed in each liquid cooling plate (21);
The liquid cooling plate (21) comprises a cooling shell, wherein the cooling shell comprises a first end plate (212), a second end plate (213) and a supporting plate (214) which are connected in an I shape and communicated with each other, and the supporting plate (214) is connected between the first end plate (212) and the second end plate (213).
2. The cell holder according to claim 1, wherein,
The liquid cooling plate (21) further comprises a guide plate (211), and the guide plate (211) is arranged in the cooling shell, so that the cooling shell is internally provided with the liquid cooling flow channel in a serpentine shape.
3. The cell holder according to claim 1, wherein,
The liquid cooling plate group (2) further comprises a connecting piece, and adjacent liquid cooling plates (21) are connected through mortise and tenon joints of the connecting piece.
4. The cell holder according to claim 1, wherein,
The number of the liquid cooling plate groups (2) is multiple, and the liquid cooling plate groups (2) are arranged at intervals along the second direction;
The water inlet pipeline (11) comprises a main water inlet pipe (111) and a plurality of branch water inlet pipes (112), the plurality of branch water inlet pipes (112) are arranged on the main water inlet pipe (111) in parallel, the plurality of branch water inlet pipes (112) are arranged in one-to-one correspondence with the plurality of liquid cooling plate groups (2), and all liquid cooling plates (21) included in each liquid cooling plate group (2) are communicated with the corresponding branch water inlet pipes (112);
And/or, the water return pipeline (12) comprises a main water return pipe (121) and a plurality of branch water return pipes (122), the branch water return pipes (122) are arranged in one-to-one correspondence with the liquid cooling plate groups (2), and all the liquid cooling plates (21) included in each liquid cooling plate group (2) are communicated with the corresponding branch water return pipes (122).
5. The cell holder according to claim 1, wherein,
The battery cell rack further comprises a base (4) which is used for supporting the liquid cooling plate group (2) and the cooling circulation pipeline (1).
6. The cell holder according to claim 5, wherein,
The base (4) comprises a supporting table board (41), and a limiting plate (411) for assisting in positioning the liquid cooling plate group (2) is arranged on the side edge of the supporting table board (41);
And/or a first bearing boss (412) for bearing the water inlet pipeline (11) is arranged on the supporting table board (41).
7. The cell holder according to claim 1, wherein,
The pre-tightening device (3) is an air bag;
and/or the pre-tightening device (3) is a liquid sac.
8. The cell holder according to claim 1, wherein,
The battery cell rack further comprises a heat conduction base plate, and the heat conduction base plate is arranged between the battery cell (100) and the liquid cooling plate group (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311023649.0A CN117013176B (en) | 2023-08-15 | 2023-08-15 | Battery cell rack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311023649.0A CN117013176B (en) | 2023-08-15 | 2023-08-15 | Battery cell rack |
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| CN117013176A CN117013176A (en) | 2023-11-07 |
| CN117013176B true CN117013176B (en) | 2024-04-26 |
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| CN202311023649.0A Active CN117013176B (en) | 2023-08-15 | 2023-08-15 | Battery cell rack |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890494A (en) * | 2019-11-29 | 2020-03-17 | 北斗航天汽车（北京）有限公司 | Battery module and battery box with liquid cooling device |
| CN214957143U (en) * | 2021-06-04 | 2021-11-30 | 天津市捷威动力工业有限公司 | Liquid cooling plate structure for limiting expansion of battery cell |
| WO2022062528A1 (en) * | 2020-09-27 | 2022-03-31 | 中国第一汽车股份有限公司 | Liquid-cooled battery system and liquid-cooled battery system control method |
| CN115377564A (en) * | 2022-06-15 | 2022-11-22 | 深圳市科陆电子科技股份有限公司 | Battery module cooling system, battery box and energy storage equipment |
-
2023
- 2023-08-15 CN CN202311023649.0A patent/CN117013176B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890494A (en) * | 2019-11-29 | 2020-03-17 | 北斗航天汽车（北京）有限公司 | Battery module and battery box with liquid cooling device |
| WO2022062528A1 (en) * | 2020-09-27 | 2022-03-31 | 中国第一汽车股份有限公司 | Liquid-cooled battery system and liquid-cooled battery system control method |
| CN214957143U (en) * | 2021-06-04 | 2021-11-30 | 天津市捷威动力工业有限公司 | Liquid cooling plate structure for limiting expansion of battery cell |
| CN115377564A (en) * | 2022-06-15 | 2022-11-22 | 深圳市科陆电子科技股份有限公司 | Battery module cooling system, battery box and energy storage equipment |
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| Publication number | Publication date |
|---|---|
| CN117013176A (en) | 2023-11-07 |
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