CN213366657U - Liquid cooling system, battery package and car - Google Patents

Abstract

The utility model is suitable for a power battery heat dissipation field provides a liquid cooling system, battery package and car, and this liquid cooling system includes diverging device and a plurality of liquid cooling boards with the diverging device intercommunication. The flow dividing device comprises a flow dividing block, a liquid inlet pipeline and a liquid outlet pipeline, and a liquid inlet channel communicated with the liquid inlet pipeline and a liquid outlet channel communicated with the liquid outlet pipeline are arranged in the flow dividing block. The liquid inlet channel is communicated with inlets of the plurality of liquid cooling plates, and the liquid outlet channel is communicated with outlets of the plurality of liquid cooling plates. The utility model provides a liquid cooling system is integrated into a module with inlet pipe way, drain pipe and branch stream block, and the import and the export of a plurality of liquid cooling boards all communicate with inlet channel and drain channel, are about to feed liquor and drain pipe and concentrate on same one side of a plurality of liquid cooling boards for this diverging device's whole size is less, and the space demand is less. And the pipeline connection among the plurality of liquid cooling plates is simpler, and the space requirement of the liquid cooling plate pipeline is further reduced.

Description

Liquid cooling system, battery package and car

Technical Field

The utility model belongs to the technical field of the power battery heat dissipation, more specifically say, relate to a liquid cooling system, battery package and car.

Background

The power battery is a core element of the electric automobile, and the quality and the efficiency of the power battery directly influence the quality and the performance of the electric automobile. The battery pack thermal management system is a core component of the battery system, and has the main function of maintaining the battery system in a proper temperature range in the working process, so that the service performance, the thermal safety and the cycle life of the battery system are ensured.

Along with the improvement of the electric quantity and the energy density of the battery pack, the heat production quantity in the working process of the system is larger and larger, and the existing scheme mainly adopts a liquid cooling scheme. But when arranging the module as much as possible in the battery package, lead to reserving also more and less for the space of liquid cooling system, and when the module quantity is more, also need polylith liquid cooling board, when polylith liquid cooling board, the pipeline between the liquid cooling board is arranged also comparatively complicatedly, and then leads to the problem that liquid cooling pipeline spatial arrangement is difficult to optimize.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a liquid cooling system, battery package and car to it is complicated to solve the interior liquid cooling plate pipe connection of current battery package, is difficult to adapt to the less technical problem who arranges the space.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a liquid cooling system, includes diverging device and a plurality of liquid cooling board with diverging device intercommunication, diverging device includes:

the flow dividing block is provided with a liquid inlet channel and a liquid outlet channel;

the liquid inlet pipeline is connected to the flow dividing block and communicated with the liquid inlet channel; and

the liquid outlet pipeline is connected with the flow dividing block and communicated with the liquid outlet channel;

the liquid inlet channel is communicated with inlets of the plurality of liquid cooling plates, and the liquid outlet channel is communicated with outlets of the plurality of liquid cooling plates.

Through adopting above-mentioned technical scheme, be integrated into a module with inlet pipe way, drain pipe and reposition of redundant personnel piece, the import and the export of a plurality of liquid cold plates all communicate with inlet channel and drain channel, be about to inlet liquid and drain pipe concentrate on the same one side of a plurality of liquid cold plates for this diverging device's whole size is less, and the space demand is less. And through set up the inlet channel who communicates with the feed liquor pipeline and the liquid outlet channel who communicates with the liquid outlet pipe way in the reposition of redundant personnel piece respectively, each liquid cooling board communicates with inlet channel and liquid outlet channel respectively for the tube coupling between a plurality of liquid cooling boards is comparatively simple, further reduces the space demand of liquid cooling board pipeline.

Optionally, the liquid inlet channel and the liquid outlet channel are mutually isolated in the shunting block, the shunting block is provided with a plurality of shunting holes communicated with the liquid inlet channel, and the plurality of shunting holes are correspondingly communicated with inlets of the plurality of liquid cooling plates in a one-to-one manner;

a plurality of backflow holes communicated with the liquid outlet pipeline are formed in the flow distribution block, and the backflow holes are correspondingly communicated with outlets of the liquid cooling plates in a one-to-one mode.

By adopting the technical scheme, the plurality of the shunting holes communicated with the liquid inlet channel are correspondingly communicated with the inlets of the liquid cooling plates in a one-to-one mode, and the cooling liquid of the liquid inlet pipeline is distributed to each liquid cooling plate; and through setting up a plurality of backward flow holes with the liquid outlet channel intercommunication, this backward flow hole corresponds the one-to-one intercommunication with the export of liquid cooling board, carries the coolant liquid that each liquid cooling board flows out to the drain pipe way to keep apart each other liquid inlet channel and liquid outlet channel in the reposition of redundant personnel piece, guarantee that the feed liquor does not interfere with each other with the play liquid when optimizing reposition of redundant personnel structure.

Optionally, the plurality of liquid cooling plates are integrally or separately arranged, and gaps are formed among the plurality of liquid cooling plates.

By adopting the technical scheme, gaps are formed among the plurality of liquid cooling plates, and the plurality of liquid cooling plates are integrated, so that the manufacturing and the processing are convenient; of course, the water cooling plates are arranged in a split mode, so that the water cooling plates are convenient to mount on the battery box body and do not need to be aligned.

Optionally, the liquid inlet pipe and the liquid outlet pipe are connected to the same side of the flow dividing block.

Through adopting above-mentioned technical scheme, will advance liquid pipeline and drain pipe and connect in the homonymy of shunting block, the processing of being convenient for also is convenient for shunt the opposite side installation liquid cold drawing of block simultaneously.

Optionally, the aperture range of the diversion hole is 14-20 mm, and the aperture range of the backflow hole is 14-20 mm.

By adopting the technical scheme, the aperture range of the diversion hole is 14-20 mm, and the aperture range of the backflow hole is 14-20 mm; the aperture of the shunting hole is in the range, so that the cooling effect of the liquid cooling plate flowing into the liquid cooling plate through the shunting hole is better, the cooling liquid is not easy to flow out of the shunting hole below the range, the flowing speed of the cooling liquid is higher than the range, the heat exchange time is shorter, and the redundant heat is difficult to take away;

the aperture of backward flow hole is in this within range for the coolant liquid can be better carry out the heat exchange in the liquid-cooled board, and the higher coolant liquid of temperature is difficult to flow from the backward flow hole fast in being less than this within range, and then leads to the cooling effect of coolant liquid not good, is higher than this within range and makes the outflow speed of coolant liquid very fast, goes out the speed that liquid speed is higher than the fluid infusion, probably leads to the stock of coolant liquid unstable, influences the cooling effect.

Optionally, the cross-sectional shape of the diversion hole and/or the backflow hole is circular, elliptical or polygonal.

By adopting the technical scheme, the cross-sectional shapes and the sizes of the liquid inlet channel, the liquid outlet channel, the flow distribution holes and the backflow holes in the flow distribution device can be adjusted and optimized, and the liquid cooling plates can be ensured to be distributed with proper cooling liquid flow.

Optionally, the liquid cold plate comprises:

a first laminate;

the second layer plate is covered with the first layer plate and defines a flow channel with the first layer plate;

the first joint is arranged on the second laminate and is communicated with the shunting hole and the inlet of the flow channel; and

the second joint is arranged on the second laminate and is communicated with the backflow hole and the outlet of the flow channel;

the first layer plate, the second layer plate, the first joint and the second joint are of an integrated structure.

Through adopting above-mentioned technical scheme, set up first plywood, second plywood, first joint and second joint into integrated into one piece structure to make the liquid cooling board form a complete circulation system.

Optionally, the number of the flow channels is multiple, the multiple flow channels are connected in parallel, and the flow channels are U-shaped flow channels or serpentine flow channels.

Through adopting above-mentioned technical scheme, through setting up a plurality of runners that connect in parallel for the liquid cooling board has better cooling effect, and set up the runner into U-shaped runner or snakelike runner, the U-shaped runner is comparatively simple, makes processing simply, and snakelike runner has increased the route of coolant liquid circulation, thereby makes the cooling effect of liquid cooling board better.

The utility model also provides a battery package, battery package includes:

the liquid cooling system described above; and

and the battery module is connected with the liquid cooling plate of the liquid cooling system.

Through adopting the above technical scheme, including foretell liquid cooling system, with the inlet line, drain pipe and reposition of redundant personnel piece integration are a module, the import and the export of a plurality of liquid cold boards all communicate with inlet channel and drain passage, be about to inlet channel and drain pipe concentrate on same one side of a plurality of liquid cold boards, make this diverging device's whole size less, the space demand is less, and through set up the inlet channel with the inlet line intercommunication and with the drain pipe intercommunication respectively in the reposition of redundant personnel piece, a plurality of liquid cold boards respectively with inlet channel and drain passage intercommunication, make the tube coupling between a plurality of liquid cold boards comparatively simple, further reduce the space demand of liquid cold board pipeline.

The utility model also provides an automobile, including foretell battery package, the coolant liquid container of automobile respectively with the liquid inlet pipe way and the drain pipe intercommunication in the liquid cooling system.

Through adopting above-mentioned technical scheme, through adopting foretell battery package, with the inlet line, drain pipe and reposition of redundant personnel piece set up and integrate into a module, the import and the export of a plurality of liquid cold plates all communicate with inlet channel and drain channel, be about to inlet liquid and drain pipe concentrate on the same one side of a plurality of liquid cold plates, make this diverging device's whole size less, the space demand is less, and through set up the inlet channel that communicates with the inlet line respectively in the reposition of redundant personnel piece and with the drain channel of drain pipe intercommunication, a plurality of liquid cold plates communicate with inlet channel and drain channel respectively, make the tube coupling between a plurality of liquid cold plates comparatively simple, further reduce the space demand of liquid cold plate pipeline.

The utility model provides a liquid cooling system's beneficial effect lies in: the liquid inlet pipeline, the liquid outlet pipeline and the shunting block are integrated into a module, the inlets and the outlets of the liquid cooling plates are communicated with the liquid inlet channel and the liquid outlet channel, the liquid inlet and the liquid outlet pipeline are concentrated on the same side of the liquid cooling plates, and therefore the shunting device is small in overall size and small in space requirement. And through set up the inlet channel who communicates with the feed liquor pipeline and the liquid outlet channel who communicates with the liquid outlet pipe way in the reposition of redundant personnel piece respectively, a plurality of liquid cooling boards communicate with inlet channel and liquid outlet channel respectively for the tube coupling between a plurality of liquid cooling boards is comparatively simple, further reduces the space demand of liquid cooling board pipeline.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present invention;

fig. 2 is a schematic view of an exploded structure of a battery pack according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a flow divider according to an embodiment of the present invention;

fig. 4 is a schematic bottom view of a liquid cooling system according to a first embodiment of the present invention;

fig. 5 is a schematic bottom view of a liquid cooling system according to a second embodiment of the present invention;

fig. 6 is a schematic perspective view of a liquid cooling plate according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a liquid cooling system; 11-a flow splitting device; 111-a liquid inlet line; 112-a liquid outlet pipe; 113-a shunting block; 1131, a liquid inlet channel; 1132-liquid outlet channel; 1133, a shunt hole; 1134-reflow hole; 12-liquid cooling plate; 121-a first ply; 1211-a flow channel; 122-second ply; 123-a first joint; 124-a second joint; 2-a heat conducting pad; 3-battery module.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1 to 4 together, a liquid cooling system 1 according to an embodiment of the present invention will now be described. The direction of the arrows in fig. 4 is a flow direction of the cooling liquid. Referring to fig. 1 and 2, the liquid cooling system 1 includes a flow dividing device 11 and a plurality of liquid cooling plates 12 communicating with the flow dividing device 11. Parallel interval sets up between a plurality of liquid cold plates 12, and be the parallel interval sets up on the horizontal direction between a plurality of liquid cold plates 12 promptly, corresponds on each liquid cold plate 12 and is equipped with battery module 3.

Referring to fig. 3, the flow dividing device 11 includes a flow dividing block 113, a liquid inlet pipe 111, and a liquid outlet pipe 112. The flow dividing block 113, the liquid inlet pipeline 111 and the liquid outlet pipeline 112 are integrated into a module, a liquid inlet channel 1131 and a liquid outlet channel 1132 are arranged in the flow dividing block 113, and the liquid inlet pipeline 111 is connected to the flow dividing block 113 and communicated with the liquid inlet channel 1131. The liquid outlet pipe 112 is connected to the flow dividing block 113 and is communicated with the liquid outlet channel 1132. The inlet channel 1131 is communicated with inlets of the plurality of liquid cooling plates 12, and the outlet channel 1132 is communicated with outlets of the plurality of liquid cooling plates 12.

The embodiment of the utility model provides a liquid cooling system 11 compares with prior art, through being integrated into a module with feed liquor pipeline 111, drain pipe 112 and reposition of redundant personnel piece 113, the import and the export of a plurality of liquid cooling boards 12 all communicate with inlet channel 1131 and drain channel 1132, are about to feed liquor 111 and the same one side of liquid cooling board 12 of liquid outlet pipe 112 concentration on a plurality of liquid cooling boards for this diverging device 11's whole size is less, and the space demand is less. And through set up inlet channel 1131 and outlet channel 1132 with drain pipe 112 intercommunication with inlet pipe 111 intercommunication respectively in the reposition of redundant personnel piece 113, each liquid-cooled board 12 communicates with inlet channel 1131 and outlet channel 1132 respectively for the tube coupling between a plurality of liquid-cooled boards 12 is comparatively simple, is about to a plurality of liquid-cooled boards 12 link together through this diverging device 11, further reduces the space demand of liquid-cooled board 12 pipeline.

In the concrete application, the cooling liquid consists of water, an antifreezing agent and an additive, and can be alcohol type, glycerin type, glycol type and other types according to different components of the antifreezing agent. And can be selected according to specific requirements. The flow dividing block 113, the liquid inlet pipe 111 and the liquid outlet pipe 112 are welded to form a whole, in this embodiment, the flow dividing block 113 is a block structure, and specifically, a liquid inlet channel 1131 and a liquid outlet channel 1132 corresponding to each other may be provided in a solid block. Of course, in other embodiments, the diversion block 113 can be shaped in other ways, such as using a tube as the inlet channel 1131 and the outlet channel 1132, with a support structure provided to stabilize the tube.

In an embodiment of the present invention, further referring to fig. 3 to fig. 5, liquid inlet channel 1131 and liquid outlet channel 1132 are independent from each other in the flow dividing block, and are not directly connected, wherein liquid inlet channel 1131 is connected to the inlet of liquid cooling plate 12, and liquid outlet channel 1132 is connected to the outlet of liquid cooling plate 12. The flow dividing block 113 is provided with a plurality of flow dividing holes 1133 communicated with the liquid inlet channel 1131, the plurality of flow dividing holes 1133 are correspondingly communicated with inlets of a plurality of liquid cooling plates 12, that is, each flow dividing hole 1133 is correspondingly communicated with an inlet of one liquid cooling plate 12 in a one-to-one manner. The flow dividing block 113 is provided with a plurality of backflow holes 1134 communicated with the liquid outlet pipe 112, the backflow holes 1134 are communicated with the outlets of the liquid cooling plates 12 in a one-to-one manner, that is, each backflow hole 1134 is correspondingly communicated with the outlet of one liquid cooling plate 12, so that the circulation of the cooling liquid among the liquid cooling plates 12 is independent and does not influence each other. The specific principle is as follows:

the coolant liquid flows into inlet channel 1131 through inlet pipe 111 in, flows into each liquid-cooled plate 12 through reposition of redundant personnel hole 1133 in to form the circulation in liquid-cooled plate 12, thereby can cool off the module on each liquid-cooled plate 12, and the coolant liquid through the heat exchange is because the heat absorption intensifies, and collects through return hole 1134 and carries to outlet pipe 112, and then flows out in following outlet pipe 112. The liquid inlet channel 1131 is isolated from the liquid outlet channel 1132, and the liquid inlet and the liquid outlet are ensured not to interfere with each other while the flow dividing structure is optimized.

In a particular application, the number of liquid-cooled plates 12 is plural. Preferably, the number of the liquid cooling plates 12 is three, and correspondingly, the number of the branch flow holes 1133 is three, and the number of the return flow holes 1134 is three. Each of the plurality of diversion holes 1133 and each of the plurality of return holes 1134 corresponds to one of the plurality of liquid-cooled panels 12.

In an embodiment of the present invention, further referring to fig. 4, a plurality of liquid cooling plates 12 are welded to form a unitary structure but not communicated with each other, and the plurality of liquid cooling plates 12 are integrated into a whole, but each liquid cooling plate 12 has an independent circulation system therebetween, and two adjacent liquid cooling plates 12 are not communicated with each other, so as to install the plurality of liquid cooling plates 12 and the flow dividing device 11 together.

Of course, in other embodiments, referring to fig. 5 in particular, the plurality of liquid-cooled plates 12 are separately arranged and connected to the diversion block 113, so that the plurality of liquid-cooled plates 12 can be mass-produced, and each liquid-cooled plate 12 has the same structure, which is convenient for processing.

Gaps are reserved among the liquid cooling plates, and meanwhile the split type liquid cooling plates 12 are convenient to mount on the battery box body and do not need to be aligned. Specifically, the battery box body comprises a bottom plate, a cross beam and a longitudinal beam, wherein the cross beam and the longitudinal beam are arranged on the bottom plate, a gap for placing the longitudinal beam is formed between every two adjacent liquid cooling plates 12, and the liquid cooling plates 12 are spliced on the two sides of the longitudinal beam along the extending direction of the longitudinal beam. The battery box body can adopt the existing box body structure.

In an embodiment of the present invention, further referring to fig. 4, the liquid inlet pipe 111 and the liquid outlet pipe 112 are connected to the same side of the shunting block 113, so as to facilitate the processing and forming, and the liquid cooling plate 12 is installed on the other side of the shunting block 113.

In an embodiment of the present invention, referring specifically to fig. 3 to fig. 5, the cross-sectional shapes and sizes of the liquid inlet channel 1131, the liquid outlet channel 1132, the shunting hole 1133 and the backflow hole 1134 in the shunting device 11 can be adjusted and optimized, so as to ensure that each liquid cooling plate 12 is divided into appropriate cooling liquid flow rates, thereby achieving good temperature uniformity of the whole liquid cooling system 1. In this embodiment, the cross-sectional shape of the diversion holes 1133 and/or the return holes 1134 is circular, elliptical, or polygonal. The polygon may be a triangle, a rectangle or a pentagon, a hexagon, etc.

Preferably, in the present embodiment, the cross-sectional shapes and sizes of the diversion holes 1133 and the return holes 1134 are approximately the same, so that the flow rates of the cooling liquid flowing into the liquid-cooling plates 12 are uniform, and the uniformity of the cooling temperature is further ensured. Identical means identical in shape and identical in size within certain tolerances. Optionally, the diameter of the diversion holes 1133 ranges from 14mm to 20mm, and the diameter of the return holes 1134 ranges from 14mm to 20 mm. The diameter here refers to the diameter of a circular hole, the length of the major axis of an ellipse, and the length of a quadrangle. In a specific application, the diameter of the diversion holes 1133 is 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, or 20mm, and the diameter of the diversion holes 1133 is within this range, which can ensure that the cooling effect of the liquid cooling plate 12 flowing through the diversion holes 1133 is better. When the aperture of reposition of redundant personnel hole 1133 is less, the coolant liquid is difficult to flow out from reposition of redundant personnel hole 1133 to the effect that the module that the influence is located on liquid cold plate 12 cools off, when the aperture of reposition of redundant personnel hole 1133 is great, the coolant liquid flows out too much, lead to the velocity of flow of coolant liquid too fast, lead to the time of coolant liquid heat exchange short, be difficult to take away unnecessary heat, thereby influence the cooling effect of coolant liquid, also probably lead to the problem of weeping. Of course, the above aperture range is the preferred choice of this embodiment, but the present invention does not exclude the use of apertures outside the above range.

Similarly, the aperture of the recirculation hole 1134 is 14mm, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm, and the aperture of the recirculation hole 1134 is within this range, so that the cooling liquid can better perform heat exchange in the liquid cooling plate 12, and when the aperture of the recirculation hole 1134 is too small, the cooling liquid with higher temperature is difficult to rapidly flow out from the recirculation hole 1134, which results in over-high temperature of the cooling liquid and poor cooling effect; when the diameter of the recirculation hole 1134 is too large, the cooling liquid flows out from the recirculation hole 1134 quickly, and the liquid outlet speed is higher than the liquid supplementing speed, which may cause unstable storage of the cooling liquid and affect the cooling effect. Similarly, the above aperture range is preferred in this embodiment, but the present invention does not exclude the use of apertures outside the above range.

In one embodiment, with further reference to fig. 3 and 6, the liquid-cooled panel 12 includes a first deck 121, a second deck 122, a first joint 123, and a second joint 124. The first layer plate 121 is provided with a flow passage 1211, and the flow passage 1211 is provided with an inlet and an outlet. The second plate 122 is covered with the first plate 121 to close the flow channel 1211 in the extending direction of the flow channel 1211, the first joint 123 is disposed on the second plate 122, the first joint 123 is communicated with the diversion hole 1133 and the inlet of the flow channel 1211, the second joint 124 is disposed on the second plate 122, and the second joint 124 is communicated with the return hole 1134 and the outlet of the flow channel 1211. The first laminate 121, the second laminate 122, the first joint 123 and the second joint 124 are integrally formed. The specific flow of the cooling liquid is as follows:

the cooling liquid flows into the first joint 123 through the diversion hole 1133, flows into the inlet of the flow passage 1211 through the first joint 123, and is cooled by heat exchange during the flowing process until flowing to the outlet of the flow passage 1211, flows to the second joint 124 through the outlet, flows out to the return hole 1134 through the second joint 124, and is collected to the liquid outlet channel 1132 until flowing out from the liquid outlet pipe 112, so as to take away heat. In the process, the first layer plate 121, the second layer plate 122, the first joint 123 and the second joint 124 are integrally formed, so that the cooling plate is a whole, and the liquid cooling plate 12 forms a complete circulation system, thereby facilitating the processing and forming.

Specifically, in the present embodiment, the first layer plate 121 and the second layer plate 122 are integrally formed by brazing, the first joint 123 and the second joint 124 are also welded to the second layer plate 122 by welding, and the first joint 123 and the second joint 124 are located on the same side of the second layer plate 122, so as to prevent liquid leakage. The runner 1211 on the first layer plate 121 is a punched runner 1211, and has a simple structure and is convenient to machine and mold. The second layer plate 122 is of a flat plate structure, so that the second layer plate can be in contact with the module better, the contact area is increased, and cooling is facilitated. Of course, in other embodiments, the flow passages 1211 can be distributed on the second plate 122, and are not limited herein.

In an embodiment of the present invention, the first plate 121 is stamped with a plurality of flow passages 1211, the plurality of flow passages 1211 are connected in parallel, that is, the cooling liquid is divided into the flow passages 1211 through the dividing hole 1133, and then divided into the plurality of flow passages 1211, by providing the plurality of flow passages 1211 connected in parallel, the flow rate of the cooling liquid passing through each flow passage 1211 is uniform, and the uniformity of the cooling temperature is ensured.

In this embodiment, the flow channel 1211 is a U-shaped flow channel 1211 or a serpentine flow channel 1211, and the flow channel 1211 is configured in a U-shape and is preferably processed; compared with the U-shaped flow passage 1211, the flow passage 1211 is arranged as the snake-shaped flow passage 1211, so that the flowing path of the cooling liquid is increased, the retention time of the cooling liquid is prolonged, the contact area of the cooling liquid and the module is indirectly increased, and the cooling effect is better.

The utility model also provides a battery package, specifically refer to and draw together figure 1 and figure 2, this battery package includes the liquid cooling system 1 in above-mentioned arbitrary embodiment and the battery module 3 of being connected with the liquid cooling board 12 of liquid cooling system 1.

This battery package is through adopting foretell liquid cooling system 1, can cool off battery module 3, also makes the pipe connection of whole battery package comparatively simple simultaneously, and liquid cooling system 1's occupation space is less.

Specifically, the battery pack further includes a thermal pad 2. The heat conducting pad 2 covers the liquid cooling plate 12 of the liquid cooling system 1, and the battery module 3 is arranged on the heat conducting pad 2. The thermal pad 2 is a high performance gap-filling thermal conductive material, and is mainly used for a transfer interface between an electronic device and a heat sink or a product housing. Has good viscosity, flexibility, good compression properties and excellent thermal conductivity. So that it can completely exhaust the air between the electronic device and the heat sink to achieve sufficient contact. The heat dissipation effect is obviously increased. So that the cooling effect of the liquid cooling system 1 is significantly increased.

The utility model also provides a car, including foretell battery package, the coolant liquid container of car communicates with feed liquor pipeline 111 and drain pipe 112 in the liquid cooling system 1 respectively.

This car is through adopting the battery package in above-mentioned embodiment, when practicing thrift car power supply system volume, can guarantee power supply system's safe and reliable, especially when car thermal runaway, can cool off this car, improves this car performance.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A liquid cooling system, comprising a flow divider and a plurality of liquid cooling plates in communication with the flow divider, the flow divider comprising:

the flow dividing block is provided with a liquid inlet channel and a liquid outlet channel;

the liquid inlet pipeline is connected to the flow dividing block and communicated with the liquid inlet channel; and

the liquid outlet pipeline is connected to the flow dividing block and communicated with the liquid outlet channel;

the liquid inlet channel is communicated with inlets of the liquid cooling plates, and the liquid outlet channel is communicated with outlets of the liquid cooling plates.

2. The liquid cooling system of claim 1, wherein: the liquid inlet channel and the liquid outlet channel are mutually isolated in the shunting block, the shunting block is provided with a plurality of shunting holes communicated with the liquid inlet channel, and the shunting holes are correspondingly communicated with inlets of the liquid cooling plates in a one-to-one mode;

the flow distribution block is provided with a plurality of backflow holes communicated with the liquid outlet pipeline, and the backflow holes are correspondingly communicated with a plurality of outlets of the liquid cooling plate in a one-to-one mode.

3. The liquid cooling system of claim 2, wherein: the liquid cooling plates are integrally or separately arranged, and gaps are formed among the liquid cooling plates.

4. A liquid cooling system according to claim 2 or 3, characterized in that: the liquid inlet pipeline and the liquid outlet pipeline are connected to the same side of the flow dividing block.

5. The liquid cooling system of claim 2, wherein: the aperture range of the diversion hole is 14-20 mm, and the aperture range of the backflow hole is 14-20 mm.

6. The liquid cooling system of claim 2, wherein: the cross section of the flow distribution hole and/or the backflow hole is circular, oval or polygonal.

7. The liquid cooling system of any of claims 2 or 3, 5 to 6, wherein: the liquid cooling plate includes:

a first laminate;

the second layer plate is covered with the first layer plate, and a flow channel is defined by the second layer plate and the first layer plate;

the first joint is arranged on the second laminate and is communicated with the shunting hole and the inlet of the flow channel; and

the second joint is arranged on the second laminate and is communicated with the backflow hole and the outlet of the flow channel;

the first laminate, the second laminate, the first joint and the second joint are of an integrally formed structure.

8. The liquid cooling system of claim 7, wherein: the number of the flow channels is multiple, the flow channels are connected in parallel, and the flow channels are U-shaped flow channels or snake-shaped flow channels.

9. A battery pack, comprising: the method comprises the following steps:

the liquid cooling system of any of claims 1 to 8; and

and the battery module is connected with the liquid cooling plate of the liquid cooling system.

10. An automobile comprising the battery pack of claim 9, wherein: and the cooling liquid container of the automobile is respectively communicated with a liquid inlet pipeline and a liquid outlet pipeline in the liquid cooling system.

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