CN219716982U - Liquid cooling device, battery module box and battery module - Google Patents
Liquid cooling device, battery module box and battery module Download PDFInfo
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- CN219716982U CN219716982U CN202320582612.0U CN202320582612U CN219716982U CN 219716982 U CN219716982 U CN 219716982U CN 202320582612 U CN202320582612 U CN 202320582612U CN 219716982 U CN219716982 U CN 219716982U
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- 238000001816 cooling Methods 0.000 title claims abstract description 260
- 239000007788 liquid Substances 0.000 title claims abstract description 257
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 340
- 238000007789 sealing Methods 0.000 claims description 23
- 230000000295 complement effect Effects 0.000 claims description 21
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 abstract description 12
- 230000002457 bidirectional effect Effects 0.000 abstract description 5
- 238000004321 preservation Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000005219 brazing Methods 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a liquid cooling device, a battery module box and a battery module, wherein the liquid cooling device comprises: the first liquid cooling plate and the second liquid cooling plate are oppositely arranged at intervals, and an accommodating space is formed between the first liquid cooling plate and the second liquid cooling plate at intervals; the first liquid cooling plate comprises at least one first main water inlet channel, at least one first main water return channel, a first channel inlet and a first channel outlet, wherein the first channel inlet is communicated with the first main water inlet channel, the first channel outlet is communicated with the first main water return channel, and the first main water inlet channel is communicated with the first main water return channel; the second liquid cooling plate comprises at least one second main water inlet channel, at least one second main water return channel, a second flow channel inlet and a second flow channel outlet, wherein the second flow channel inlet is communicated with the second main water inlet channel, the second flow channel outlet is communicated with the second main water return channel, and the second main water inlet channel is communicated with the second main water return channel. According to the utility model, the first liquid cooling plate and the second liquid cooling plate are matched to realize bidirectional efficient heat transfer, so that the heat transfer efficiency can be improved.
Description
Technical Field
The utility model relates to the technical field of battery liquid cooling, in particular to a liquid cooling device, a battery module box and a battery module.
Background
The new energy power battery system generally adopts the forms of air cooling, liquid cooling and direct cooling, the common mode is liquid cooling, the liquid cooling mode is usually that heat exchange is carried out with a liquid cooling plate after a heat conduction interface material is added on the bottom surface and the top surface of a battery cell or a module, and under the condition of high-rate charging, the heat productivity of the battery cell is greatly improved, higher requirements are provided for the heat dissipation requirement of a thermal management system, the existing liquid cooling mode cannot meet the heat dissipation requirement of the battery cell under the condition of high-rate charging, and the battery cell has temperature gradient difference along the Z direction and has larger temperature difference.
For example, the cooling structure of the module with the patent publication number of CN212848580U only realizes bidirectional heat transfer at the module level, and the flow channels between the modules are communicated with each other by very complex pipelines, so that the complexity and the cost of the system are increased, and meanwhile, a complex pipeline system inevitably consumes a certain space utilization rate.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the utility model provides a liquid cooling device, wherein a first liquid cooling plate and a second liquid cooling plate are arranged at opposite intervals, the first liquid cooling plate comprises at least one first main water inlet runner and at least one first main water return runner, the first main water inlet runner is communicated with the first main water return runner, the second liquid cooling plate comprises at least one second main water inlet runner and at least one second main water return runner, the second main water inlet runner is communicated with the second main water return runner, and the first liquid cooling plate and the second liquid cooling plate are matched to realize bidirectional efficient heat transfer, so that the heat transfer efficiency can be improved.
A second object of the present utility model is to provide a battery module case;
a third object of the present utility model is to provide a battery module case.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a liquid cooling apparatus comprising: a first liquid cooling plate and a second liquid cooling plate;
the first liquid cooling plate and the second liquid cooling plate are oppositely arranged at intervals, and an accommodating space is formed by the intervals between the first liquid cooling plate and the second liquid cooling plate;
the first liquid cooling plate comprises at least one first main water inlet channel, at least one first main water return channel, a first channel inlet and a first channel outlet, wherein the first channel inlet is communicated with the first main water inlet channel, the first channel outlet is communicated with the first main water return channel, and the first main water inlet channel is communicated with the first main water return channel;
the second liquid cooling plate comprises at least one second main water inlet channel, at least one second main water return channel, a second flow channel inlet and a second flow channel outlet, wherein the second flow channel inlet is communicated with the second main water inlet channel, the second flow channel outlet is communicated with the second main water return channel, and the second main water inlet channel is communicated with the second main water return channel.
As the preferable technical scheme, the first main water inlet runner and the second main water return runner adopt runner complementary structures, and the first main water return runner and the second main water inlet runner adopt runner complementary structures.
As an optimized technical scheme, the first main water inlet flow channel and the second main water return flow channel adopt flow channel complementary structures, and the axes of the first main water inlet flow channel and the second main water return flow channel are overlapped by taking one side surface opposite to the first liquid cooling plate or the second liquid cooling plate as a reference surface;
the first main water return flow channel and the second main water inlet flow channel adopt flow channel complementary structures, and the first main water return flow channel and the second main water inlet flow channel are overlapped by taking one side surface opposite to the first liquid cooling plate or the second liquid cooling plate as a reference surface.
As the preferable technical scheme, the number of the first main water inlet flow channels and the number of the first main water return flow channels are at least two, and the number of the first main water inlet flow channels and the number of the second main water return flow channels are at least two correspondingly.
As an optimized technical scheme, the first main water inlet flow channel is arranged at the middle position of the first liquid cooling plate, the first main water return flow channel is arranged at two sides of the first liquid cooling plate, the second main water inlet flow channel is correspondingly arranged at two sides of the second liquid cooling plate, and the second main water return flow channel is correspondingly arranged at the middle position of the second liquid cooling plate;
or, the first main water inlet runner is arranged at two sides of the first liquid cooling plate, the first main water return runner is arranged at the middle position of the first liquid cooling plate, the second main water inlet runner is correspondingly arranged at the middle position of the second liquid cooling plate, and the second main water return runner is correspondingly arranged at two sides of the second liquid cooling plate.
As an optimized technical scheme, the first liquid cooling plate further comprises a branch runner, wherein the branch runner is formed by shunting a first main water inlet runner and finally is converged into a first main water outlet runner to form an S-shaped runner;
and/or;
the second liquid cooling plate further comprises a branch flow passage, wherein the branch flow passage is formed by shunting the second main water inlet flow passage and finally is converged into the second main water outlet flow passage to form an S-shaped flow passage.
As an optimized technical scheme, the first liquid cooling plate is provided with a first water inlet nozzle and a first water outlet nozzle, the first water inlet nozzle and the first water outlet nozzle are respectively communicated with a first flow channel inlet and a first flow channel outlet, and the first water inlet nozzle and the first water outlet nozzle are communicated with each other through a first flow guide mechanism and a first flow guide pipeline;
and/or;
the second liquid cooling plate is provided with a second water inlet nozzle and a second water outlet nozzle, the second water inlet nozzle and the second water outlet nozzle are respectively communicated with a second flow channel inlet and a second flow channel outlet, and the second water inlet nozzle and the second water outlet nozzle are communicated with each other through a second flow guide mechanism and a second flow guide pipeline.
As a preferable technical scheme, a first plug connector, a second plug connector, a third plug connector, a fourth plug connector, a first water pipe flange and a second water pipe flange are further arranged between the first water inlet nozzle and the first water outlet nozzle, the first diversion pipeline comprises a first water inlet pipe and a first water outlet pipe, one end of the first water inlet pipe is connected with the first water inlet nozzle through the first plug connector, the other end of the first water inlet pipe is connected with the first water pipe flange through the second plug connector, one end of the first water outlet pipe is connected with the first water outlet nozzle through the third plug connector, the other end of the first water outlet pipe is connected with the second water pipe flange through the fourth plug connector, and the first diversion mechanism is connected with the first water pipe flange and the second water pipe flange;
and/or;
the second water inlet nozzle and the second water outlet nozzle are further provided with a fifth plug connector, a sixth plug connector, a seventh plug connector, an eighth plug connector, a third water pipe flange and a fourth water pipe flange, the second diversion pipeline comprises a second water inlet pipe and a second water outlet pipe, one end of the second water inlet pipe is connected with the second water inlet nozzle through the fifth plug connector, the other end of the second water inlet pipe is connected with the third water pipe flange through the sixth plug connector, one end of the second water outlet pipe is connected with the second water outlet nozzle through the seventh plug connector, the other end of the second water outlet pipe is connected with the fourth water pipe flange through the eighth plug connector, and the second diversion mechanism is connected with the third water pipe flange and the fourth water pipe flange.
In order to achieve the second object, the present utility model adopts the following technical scheme:
a battery module box body is provided with the liquid cooling device and a box body frame;
the first liquid cooling plate and the second liquid cooling plate are respectively connected with the box body frame, and the first liquid cooling plate and the second liquid cooling plate are respectively arranged at the top and the bottom of the box body frame and are enclosed with the box body frame to form a closed accommodating space.
As an optimized technical scheme, a plurality of through holes penetrating through the side face are formed in the side face of the first liquid cooling plate, sealing fasteners capable of being contained in the through holes in a sealing mode are arranged on the first liquid cooling plate, and the first liquid cooling plate is fixedly connected with the box body frame through the sealing fasteners;
and/or;
the side of the second liquid cooling plate is provided with a plurality of through holes penetrating through the side, the second liquid cooling plate is provided with sealing fasteners capable of being contained in the through holes in a sealing mode, and the second liquid cooling plate is fixedly connected with the box body frame through the sealing fasteners.
As a preferable technical scheme, the first liquid cooling plate is also provided with a plurality of counter bores, the counter bores are distributed at intervals along the central axis of the first liquid cooling plate, the first liquid cooling plate is provided with a fastener which can be accommodated in the counter bores, and the first liquid cooling plate is fixedly connected with the box body frame through the fastener;
and/or;
the second liquid cooling plate is further provided with a plurality of counter bores, the counter bores are distributed along the central axis of the second liquid cooling plate at intervals, the second liquid cooling plate is provided with fastening pieces which can be accommodated in the counter bores, and the first liquid cooling plate is fixedly connected with the box body frame through the fastening pieces.
In order to achieve the third object, the present utility model adopts the following technical scheme:
a battery module provided with the battery module box body and at least one group of electric core groups;
the battery cell group is respectively clung to the first liquid cooling plate and the second liquid cooling plate, and is arranged in the accommodating space.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
(1) The first liquid cooling plate and the second liquid cooling plate are oppositely arranged at intervals, the first liquid cooling plate comprises at least one first main water inlet runner and at least one first main water return runner, the first main water inlet runner is communicated with the first main water return runner, the second liquid cooling plate comprises at least one second main water inlet runner and at least one second main water return runner, the second main water inlet runner is communicated with the second main water return runner, and bidirectional efficient heat transfer is realized through the cooperation of the first liquid cooling plate and the second liquid cooling plate, so that the heat transfer efficiency can be improved.
(2) According to the utility model, the first main water inlet runner and the second main water inlet runner adopt a runner complementary structure, and the first main water inlet runner and the second main water inlet runner adopt a runner complementary structure, so that the heat transfer efficiency can be improved, the temperature difference of the battery cell can be reduced, and the heat accumulation effect can be effectively overcome.
(3) The plug connector and the diversion pipeline have simple structures and low space occupation rate, and can maximally improve the overall space utilization rate of the liquid cooling device.
(4) According to the utility model, the first liquid cooling plate and the second liquid cooling plate are provided with the through holes, and the first liquid cooling plate and the second liquid cooling plate are fixedly connected with the box body frame through the sealing fasteners accommodated in the through holes, so that the tightness of the whole battery pack system is improved.
(5) The first liquid cooling plate and the second liquid cooling plate are provided with counter bores, and the first liquid cooling plate and the second liquid cooling plate are fixedly connected with the box body frame through the fastening pieces accommodated in the counter bores so as to strengthen the mechanical strength of the first liquid cooling plate and the second liquid cooling plate.
(6) According to the utility model, the first liquid cooling plate and the second liquid cooling plate are respectively connected with the box body frame, and the first liquid cooling plate and the second liquid cooling plate are respectively arranged at the top and the bottom of the box body frame, so that the Z-direction space utilization rate of the power battery system is greatly improved and the heat transfer efficiency of the thermal management system is improved due to the integrated design of the first liquid cooling plate and the second liquid cooling plate and the box body frame.
Drawings
FIG. 1 is a schematic diagram of a first liquid cooling plate according to the present utility model;
FIG. 2 is a schematic diagram of a second liquid cooling plate according to the present utility model;
FIG. 3 is a schematic diagram of an integrated structure of a second liquid cooling plate according to the present utility model;
FIG. 4 is a schematic view of a partial structure of a first liquid cooling plate according to the present utility model;
FIG. 5 is a schematic view of the structure of the first water inlet pipe of the present utility model;
FIG. 6 is a schematic view of the structure of the first water outlet pipe of the present utility model;
FIG. 7 is a schematic view of a first liquid cooling plate with a first primary water inlet channel and a first primary water return channel according to the present utility model;
FIG. 8 is a schematic diagram of a second liquid cooling plate with a second primary water inlet channel and a second primary water return channel according to the present utility model;
FIG. 9 is a schematic structural view of a first liquid cooling plate with at least two first primary water inlet channels and a first primary water return channel according to the present utility model;
fig. 10 is a schematic structural diagram of a second liquid cooling plate provided with at least two second main water inlet channels and second main water return channels according to the present utility model.
The device comprises a first liquid cooling plate, a second liquid cooling plate, a 3-box frame, 4-through holes, 5-counter bores, 6-first water inlets, 7-first water outlets, 8-first connectors, 9-first water inlets, 10-second connectors, 11-first water pipe flanges, 12-third connectors, 13-first water outlets, 14-fourth connectors, 15-second water pipe flanges, 16-first runner inlets, 17-first runner outlets, 18-second runner outlets, 19-second runner inlets and 20-false runners.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
As shown in fig. 1 and 2, this embodiment provides a liquid cooling device, including: the first liquid cooling plate 1 and the second liquid cooling plate 2 are arranged at intervals relatively, and an accommodating space is formed by the intervals between the first liquid cooling plate 1 and the second liquid cooling plate 2;
the first liquid cooling plate 1 comprises at least one first main water inlet runner, at least one first main water return runner, a first runner inlet 16 and a first runner outlet 17, wherein the first runner inlet 16 is communicated with the first main water inlet runner, the first runner outlet 17 is communicated with the first main water return runner, and the first main water inlet runner is communicated with the first main water return runner;
the second liquid cooling plate 2 comprises at least one second main water inlet channel, at least one second main water return channel, a second channel inlet 19 and a second channel outlet 18, wherein the second channel inlet 19 is communicated with the second main water inlet channel, the second channel outlet 18 is communicated with the second main water return channel, and the second main water inlet channel is communicated with the second main water return channel;
the first liquid cooling plate 1 and the second liquid cooling plate are oppositely arranged at intervals, so that bidirectional efficient heat transfer is realized, the heat transfer efficiency can be improved, and the temperature difference of a heat source is reduced;
as shown in fig. 4, the first liquid cooling plate 1 is provided with a first water inlet nozzle 6 and a first water outlet nozzle 7, the first water inlet nozzle 6 and the first water outlet nozzle 7 are respectively communicated with a first flow channel inlet 16 and a first flow channel outlet 17, and the first water inlet nozzle 6 and the first water outlet nozzle 7 are communicated with each other through a first flow guide mechanism and a first flow guide pipeline;
and/or the second liquid cooling plate 2 is provided with a second water inlet nozzle and a second water outlet nozzle, the second water inlet nozzle and the second water outlet nozzle are respectively communicated with the second flow passage inlet 19 and the second flow passage outlet 18, and the second water inlet nozzle and the second water outlet nozzle are communicated with each other through a second flow guide mechanism and a second flow guide pipeline.
As shown in fig. 5 and 6, a first plug connector 8, a second plug connector 10, a third plug connector 12, a fourth plug connector 14, a first water pipe flange 11 and a second water pipe flange 15 are further arranged between the first water inlet nozzle 6 and the first water outlet nozzle 7, the first diversion pipeline comprises a first water inlet pipe 9 and a first water outlet pipe 13, one end of the first water inlet pipe 9 is connected with the first water inlet nozzle 6 through the first plug connector 8, the other end of the first water inlet pipe 9 is connected with the first water pipe flange 11 through the second plug connector 10, one end of the first water outlet pipe 13 is connected with the first water outlet nozzle 7 through the third plug connector 12, the other end of the first water outlet pipe 13 is connected with the second water pipe flange 15 through the fourth plug connector 14, and the first diversion mechanism is connected with the first water pipe flange 11 and the second water pipe flange 15;
and/or, the second water inlet nozzle and the second water outlet nozzle are also provided with a fifth plug connector, a sixth plug connector, a seventh plug connector, an eighth plug connector, a third water pipe flange and a fourth water pipe flange, the second diversion pipeline comprises a second water inlet pipe and a second water outlet pipe, one end of the second water inlet pipe is connected with the second water inlet nozzle through the fifth plug connector, the other end of the second water inlet pipe is connected with the third water pipe flange through the sixth plug connector, one end of the second water outlet pipe is connected with the second water outlet nozzle through the seventh plug connector, the other end of the second water outlet pipe is connected with the fourth water pipe flange through the eighth plug connector, and the second diversion mechanism is connected with the third water pipe flange and the fourth water pipe flange.
In this embodiment, the first diversion mechanism and the second diversion mechanism may be selected from devices such as a diverter and a water pump, and each water pipe flange is led out from the corresponding hole, and sealing is achieved through structures such as a sealing gasket and a bolt.
The quick connector and the diversion pipeline adopted by the embodiment have simple structure and low space occupation rate, and the overall space utilization rate is improved to the greatest extent, wherein the diversion pipeline can be a PA water pipe;
in this embodiment, the surface of first liquid cooling board is equipped with heat preservation waterproof coating, the surface is the side of keeping away from the second liquid cooling board, and/or the surface of second liquid cooling board is equipped with heat preservation waterproof coating, the surface is the side of keeping away from first liquid cooling board, the heat preservation waterproof coating of this embodiment can adopt the PVC coating, thickness is preferably 1 ~ 1.3mm, can reduce the heat exchange of first liquid cooling board, second liquid cooling board and external environment, improve the heat preservation performance of system, compare with traditional insulation material, the PVC coating has heat preservation waterproof function, can effectively avoid other insulation materials such as pixel cotton and the defect that influences its heat preservation performance owing to exposing water absorption under external environment.
In this embodiment, the flow channels corresponding to both the first liquid cooling plate and the second liquid cooling plate adopt a flow channel complementary structure, where the flow channel complementary structure can be specifically described as: the heat source is arranged in an accommodating space formed by the first liquid cooling plate and the second liquid cooling plate at intervals, the top of the heat source is clung to the flow passage position of the first liquid cooling plate, the bottom of the heat source is clung to the flow passage position of the second liquid cooling plate, the first liquid cooling plate and the second liquid cooling plate are divided into a plurality of flow passage areas, the flow passage directions of the first liquid cooling plate flow passage area corresponding to the top of the heat source and the second liquid cooling plate flow passage area corresponding to the bottom of the heat source are opposite, and the heat carried away by the two flow passage areas are close, so that the heat dissipation of the heat source is more uniform;
specifically, in the embodiment, the first main water inlet flow channel and the second main water return flow channel adopt a flow channel complementary structure, and the first main water return flow channel and the second main water inlet flow channel adopt a flow channel complementary structure, so that the temperature difference problem caused by the heat accumulation effect can be effectively neutralized, and the heat source temperature difference is reduced.
In this embodiment, the first primary water inlet channel and the second primary water return channel adopt a channel complementary structure, and a certain side surface opposite to the first liquid cooling plate or the second liquid cooling plate is used as a reference surface, and the axes of the first primary water inlet channel and the second primary water return channel are overlapped; the first main water return flow channel and the second main water inlet flow channel adopt flow channel complementary structures, and a certain side surface opposite to the first liquid cooling plate or the second liquid cooling plate is used as a reference surface, and the axes of the first main water return flow channel and the second main water inlet flow channel are overlapped; preferably, a certain side surface opposite to the first liquid cooling plate or the second liquid cooling plate is taken as a reference surface, and the sections of the corresponding flow channels are equal; of course, the flow channel complementary structure of the embodiment is not limited to the situation that the flow channel axes corresponding to the first liquid cooling plate and the second liquid cooling plate are overlapped, and only the flow channel areas corresponding to the first liquid cooling plate and the second liquid cooling plate are satisfied to achieve the approach of heat dissipation, so that heat dissipation of a heat source is more uniform;
as shown in fig. 7 and 8, when the first main water inlet channel and the first main water return channel of the first liquid cooling plate are one, the second main water inlet channel and the second main water return channel of the second liquid cooling plate are one, the first main water inlet channel and the first main water return channel are distributed on two sides of the first liquid cooling plate, the second main water inlet channel and the second main water return channel are correspondingly distributed on two sides of the second liquid cooling plate, the first main water inlet channel and the second main water return channel adopt a channel complementary structure, the first main water return channel and the second main water inlet channel adopt a channel complementary structure, preferably the first main water inlet channel is opposite to the second main water return channel, and the first main water inlet channel and the second main water inlet channel adopt a channel complementary structure, preferably the first main water inlet channel is opposite to the second main water inlet channel;
as shown in fig. 9 and 10, when the number of the first main water inlet channels and the first main water return channels of the first liquid cooling plate is at least two, the first main water inlet channels are arranged at two sides of the first liquid cooling plate, the first main water return channels are arranged at the middle position of the first liquid cooling plate, the second main water inlet channels are correspondingly arranged at the middle position of the second liquid cooling plate, and the second main water return channels are correspondingly arranged at two sides of the second liquid cooling plate;
or, the first main water inlet flow channel is arranged at the middle position of the first liquid cooling plate, the first main water return flow channel is arranged at the two sides of the first liquid cooling plate, the second main water inlet flow channel is correspondingly arranged at the two sides of the second liquid cooling plate, and the second main water return flow channel is correspondingly arranged at the middle position of the second liquid cooling plate;
the heat accumulation effect is achieved, so that the temperature of the cooling liquid between the water inlet and the water outlet is gradually increased, and the heat exchange capacity is gradually reduced, namely, the temperature is higher when the cooling liquid is closer to the water outlet, therefore, the flow channel design mode of the first liquid cooling plate can be selected to be two-side inlet and middle outlet, the flow channel design mode of the second liquid cooling plate is middle inlet and two-side outlet, the temperature difference problem caused by the heat accumulation effect can be effectively neutralized by adjusting the arrangement mode of the main water inlet flow channels and the main water outlet flow channels of the upper and lower cold plate flow channels, and the heat source temperature difference is reduced, and vice versa, namely, the positions of the main water inlet flow channels of the upper and lower cold plate flow channels can be interchanged, the flow channel design mode of the first liquid cooling plate is middle inlet and two-side outlet, the flow channel design mode of the second liquid cooling plate is two-side inlet and middle outlet, and the heat source temperature difference can be further reduced by adopting the flow channel complementary structure of the first liquid cooling plate flow channels and the second liquid cooling plate.
As shown in fig. 9 and 10, the first liquid cooling plate further includes a branch flow passage, the branch flow passage is formed by branching a first main water inlet flow passage and finally merges into a first main water outlet flow passage to form an S-shaped flow passage, wherein each branch main flow passage is further branched into a plurality of branch secondary flow passages, and the plurality of branch secondary flow passages merge into the first main water return flow passage;
and/or the second liquid cooling plate further comprises branch flow passages, the branch flow passages are formed by branching the second main water inlet flow passages and finally merge into the second main water outlet flow passages to form S-shaped flow passages, wherein each branch main flow passage is further branched into a plurality of branch secondary flow passages, and the plurality of branch secondary flow passages merge into the second main water return flow passage;
in this embodiment, the number of the primary water inlet channels and the primary water return channels corresponds to the arrangement mode of the heating modules, for example, two rows of electric cores correspond to two primary water inlet channels, one row of electric cores correspond to one primary water inlet channel, the number of the secondary channels is the same as the number of columns of the heating modules, the purpose of the branch primary channels is mainly to adjust the distance of the secondary channels to ensure that the flow of each secondary channel is consistent, the basic principle is to ensure that the ratio of the length of each secondary channel between the inlet of the primary channel and the outlet of the primary return channel meets 0.9-1.1, in addition, the water inlet cross-sectional area (for example, 4 secondary channels 4, and the water inlet cross-sectional area is 4 times of that of the secondary channels 1-3) can be increased by adjusting the number of the secondary channels so as to ensure that the flow distribution of each secondary channel is uniform, and the heat taken away by each secondary channel is consistent so as to ensure that the temperature difference of each heating module is consistent. Such as: the branched main runner is divided into three branched secondary runners again, and each branched secondary runner is converged to the main return runner after being walked in an S shape. The position of the water inlet and the water outlet can be adjusted according to the requirement;
the first liquid cooling plate and the second liquid cooling plate of this embodiment can adopt the integral type integration, also can split it into runner plate and cold plate hypoplastron, the cold plate hypoplastron forms the cavity structure of upper cover through the mode of punching press and forms the passageway that can supply cooling liquid to flow together through brazing with the runner plate, the runner plate can be realized through processes such as punching press brazing or inflation, wherein, be false runner 20 in the coolant flow circuit of runner plate not, also play the exhaust effect in runner plate and cold plate hypoplastron brazing process when strengthening cold plate mechanical strength and preventing to warp.
Preferably, the first water inlet nozzle, the first water outlet nozzle, the second water inlet nozzle and the second water outlet nozzle of the embodiment are all arranged on the lower plate of the cold plate on the second liquid cooling plate.
Example 2
As shown in fig. 3, this embodiment provides a battery module case, provided with the liquid cooling device of the above embodiment 1, and further including a case frame 3;
the first liquid cooling plate 1 and the second liquid cooling plate 2 are respectively connected with the box body frame 3, and the first liquid cooling plate 1 and the second liquid cooling plate 2 are respectively arranged at the top and the bottom of the box body frame 3 and are enclosed with the box body frame to form a closed accommodating space;
in this embodiment, the first liquid cooling plate is disposed at the top of the battery module case, and is designed integrally with the case frame to serve as an upper cover plate of the battery module case; the second liquid cooling plate is arranged at the bottom of the battery module box body, is integrated with the box body frame and is used as a bottom plate of the battery module box body, so that the Z-direction space utilization rate of the power battery system is greatly improved, and the heat transfer efficiency of the thermal management system is improved;
as shown in fig. 4, a plurality of through holes 4 penetrating through the side face are formed in the side face of the first liquid cooling plate, sealing fasteners capable of being contained in the through holes are arranged on the first liquid cooling plate, the first liquid cooling plate is fixedly connected with the box body frame through the sealing fasteners contained in the through holes, a plurality of through holes penetrating through the side face are formed in the side face of the second liquid cooling plate, sealing fasteners capable of being contained in the through holes are arranged on the second liquid cooling plate, and the second liquid cooling plate is fixedly connected with the box body frame through the sealing fasteners contained in the through holes.
In the embodiment, the sealing fastener adopts sealing fasteners such as a sealing gasket, a rivet and the like, so as to realize the sealing requirement of the whole battery pack system formed by the first liquid cooling plate, the second liquid cooling plate and the box body frame;
as shown in fig. 4, the first liquid cooling plate is further provided with a plurality of counter bores 5, the counter bores 5 are distributed at intervals along the central axis of the first liquid cooling plate, the first liquid cooling plate is provided with a fastener which can be accommodated in the counter bores, and the first liquid cooling plate is fixedly connected with the box frame through the fastener which is accommodated in the counter bores, and/or; the second liquid cooling board still is equipped with a plurality of counter bores, and the counter bore is along the axis interval distribution of second liquid cooling board, is equipped with the fastener that can hold in the counter bore on the second liquid cooling board, and the fastener and the box frame fixed connection in the counter bore are held through holding to the second liquid cooling board, and this embodiment fastener adopts fasteners such as bolt, and the fastener is with first liquid cooling board, second liquid cooling board and box frame connection to reinforcing first liquid cooling board, second liquid cooling board's mechanical strength.
Example 3
The embodiment provides a battery module, which is provided with the battery module box of the embodiment 2, and further includes: the battery cell group is arranged in an accommodating space formed by the interval between the first liquid cooling plate and the second liquid cooling plate, and the battery cell group is respectively clung to the first liquid cooling plate and the second liquid cooling plate;
in this embodiment, first liquid cooling board, second liquid cooling board all are equipped with the fire prevention insulating layer, and the fire prevention insulating layer is hugged closely first liquid cooling board, second liquid cooling board, and the fire prevention insulating layer is equipped with the fretwork part, and this fretwork part position needs to realize that electric core group and first liquid cooling board, second liquid cooling board's heat conduction is connected, consequently need dodge, because the material of liquid cooling board is mostly aluminum alloy, its fusing point is lower, can effectually prevent that electric core from taking place thermal runaway after having pasted fire prevention insulating material, improves whole battery system's security.
The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present utility model should be made in the equivalent manner, and the embodiments are included in the protection scope of the present utility model.
Claims (12)
1. A liquid cooling apparatus, comprising: a first liquid cooling plate and a second liquid cooling plate;
the first liquid cooling plate and the second liquid cooling plate are oppositely arranged at intervals, and an accommodating space is formed by the intervals between the first liquid cooling plate and the second liquid cooling plate;
the first liquid cooling plate comprises at least one first main water inlet channel, at least one first main water return channel, a first channel inlet and a first channel outlet, wherein the first channel inlet is communicated with the first main water inlet channel, the first channel outlet is communicated with the first main water return channel, and the first main water inlet channel is communicated with the first main water return channel;
the second liquid cooling plate comprises at least one second main water inlet channel, at least one second main water return channel, a second flow channel inlet and a second flow channel outlet, wherein the second flow channel inlet is communicated with the second main water inlet channel, the second flow channel outlet is communicated with the second main water return channel, and the second main water inlet channel is communicated with the second main water return channel.
2. The liquid cooling device according to claim 1, wherein the first primary water inlet channel and the second primary water return channel adopt a channel complementary structure, and the first primary water return channel and the second primary water inlet channel adopt a channel complementary structure.
3. The liquid cooling device according to claim 2, wherein the first main water inlet flow channel and the second main water return flow channel adopt flow channel complementary structures, and a certain side surface opposite to the first liquid cooling plate or the second liquid cooling plate is taken as a reference surface, and the axes of the first main water inlet flow channel and the second main water return flow channel are overlapped;
the first main water return flow channel and the second main water inlet flow channel adopt flow channel complementary structures, and the first main water return flow channel and the second main water inlet flow channel are overlapped by taking one side surface opposite to the first liquid cooling plate or the second liquid cooling plate as a reference surface.
4. The liquid cooling device according to claim 1, wherein the number of the first main water inlet flow channel and the first main water return flow channel is at least two, and the number of the first main water inlet flow channel and the second main water return flow channel is at least two correspondingly.
5. The liquid cooling device according to claim 4, wherein the first main water inlet channel is arranged at the middle position of the first liquid cooling plate, the first main water return channel is arranged at two sides of the first liquid cooling plate, the second main water inlet channel is correspondingly arranged at two sides of the second liquid cooling plate, and the second main water return channel is correspondingly arranged at the middle position of the second liquid cooling plate;
or, the first main water inlet runner is arranged at two sides of the first liquid cooling plate, the first main water return runner is arranged at the middle position of the first liquid cooling plate, the second main water inlet runner is correspondingly arranged at the middle position of the second liquid cooling plate, and the second main water return runner is correspondingly arranged at two sides of the second liquid cooling plate.
6. The liquid cooling device according to claim 1, wherein the first liquid cooling plate further comprises a branch flow passage, the branch flow passage is formed by branching a first main water inlet flow passage and finally merges into a first main water outlet flow passage, and an S-shaped flow passage is formed;
and/or;
the second liquid cooling plate further comprises a branch flow passage, wherein the branch flow passage is formed by shunting the second main water inlet flow passage and finally is converged into the second main water outlet flow passage to form an S-shaped flow passage.
7. The liquid cooling device according to claim 1, wherein the first liquid cooling plate is provided with a first water inlet nozzle and a first water outlet nozzle, the first water inlet nozzle and the first water outlet nozzle are respectively communicated with a first flow channel inlet and a first flow channel outlet, and the first water inlet nozzle and the first water outlet nozzle are communicated with each other through a first diversion mechanism and a first diversion pipeline;
and/or;
the second liquid cooling plate is provided with a second water inlet nozzle and a second water outlet nozzle, the second water inlet nozzle and the second water outlet nozzle are respectively communicated with a second flow channel inlet and a second flow channel outlet, and the second water inlet nozzle and the second water outlet nozzle are communicated with each other through a second flow guide mechanism and a second flow guide pipeline.
8. The liquid cooling device according to claim 7, wherein a first plug connector, a second plug connector, a third plug connector, a fourth plug connector, a first water pipe flange and a second water pipe flange are further arranged between the first water inlet nozzle and the first water outlet nozzle, the first diversion pipeline comprises a first water inlet pipe and a first water outlet pipe, one end of the first water inlet pipe is connected with the first water inlet nozzle through the first plug connector, the other end of the first water inlet pipe is connected with the first water pipe flange through the second plug connector, one end of the first water outlet pipe is connected with the first water outlet nozzle through the third plug connector, the other end of the first water outlet pipe is connected with the second water pipe flange through the fourth plug connector, and the first diversion mechanism is connected with the first water pipe flange and the second water pipe flange;
and/or;
the second water inlet nozzle and the second water outlet nozzle are further provided with a fifth plug connector, a sixth plug connector, a seventh plug connector, an eighth plug connector, a third water pipe flange and a fourth water pipe flange, the second diversion pipeline comprises a second water inlet pipe and a second water outlet pipe, one end of the second water inlet pipe is connected with the second water inlet nozzle through the fifth plug connector, the other end of the second water inlet pipe is connected with the third water pipe flange through the sixth plug connector, one end of the second water outlet pipe is connected with the second water outlet nozzle through the seventh plug connector, the other end of the second water outlet pipe is connected with the fourth water pipe flange through the eighth plug connector, and the second diversion mechanism is connected with the third water pipe flange and the fourth water pipe flange.
9. A battery module case, characterized in that the liquid cooling device according to any one of claims 1 to 8 is provided, and a case frame is provided;
the first liquid cooling plate and the second liquid cooling plate are respectively connected with the box body frame, and the first liquid cooling plate and the second liquid cooling plate are respectively arranged at the top and the bottom of the box body frame and are enclosed with the box body frame to form a closed accommodating space.
10. The battery module case according to claim 9, wherein a plurality of through holes penetrating through the side face are formed in the side face of the first liquid cooling plate, sealing fasteners capable of being accommodated in the through holes in a sealing mode are arranged on the first liquid cooling plate, and the first liquid cooling plate is fixedly connected with the case frame through the sealing fasteners;
and/or;
the side of the second liquid cooling plate is provided with a plurality of through holes penetrating through the side, the second liquid cooling plate is provided with sealing fasteners capable of being contained in the through holes in a sealing mode, and the second liquid cooling plate is fixedly connected with the box body frame through the sealing fasteners.
11. The battery module box body according to claim 9, wherein the first liquid cooling plate is further provided with a plurality of counter bores, the counter bores are distributed at intervals along the central axis of the first liquid cooling plate, the first liquid cooling plate is provided with a fastener which can be accommodated in the counter bores, and the first liquid cooling plate is fixedly connected with the box body frame through the fastener;
and/or;
the second liquid cooling plate is further provided with a plurality of counter bores, the counter bores are distributed along the central axis of the second liquid cooling plate at intervals, the second liquid cooling plate is provided with fastening pieces which can be accommodated in the counter bores, and the first liquid cooling plate is fixedly connected with the box body frame through the fastening pieces.
12. A battery module characterized in that the battery module box body of any one of claims 9-11 is provided, and at least one group of electric core groups is also provided;
the battery cell group is respectively clung to the first liquid cooling plate and the second liquid cooling plate, and is arranged in the accommodating space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320582612.0U CN219716982U (en) | 2023-03-23 | 2023-03-23 | Liquid cooling device, battery module box and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320582612.0U CN219716982U (en) | 2023-03-23 | 2023-03-23 | Liquid cooling device, battery module box and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219716982U true CN219716982U (en) | 2023-09-19 |
Family
ID=88003860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320582612.0U Active CN219716982U (en) | 2023-03-23 | 2023-03-23 | Liquid cooling device, battery module box and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219716982U (en) |
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2023
- 2023-03-23 CN CN202320582612.0U patent/CN219716982U/en active Active
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