CN220138420U

CN220138420U - Immersed battery cooling device

Info

Publication number: CN220138420U
Application number: CN202320912968.6U
Authority: CN
Inventors: 甘燚杰
Original assignee: Zhejiang Zero Run Technology Co Ltd; Zhejiang Lingxiao Energy Technology Co Ltd
Current assignee: Zhejiang Zero Run Technology Co Ltd; Zhejiang Lingxiao Energy Technology Co Ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-12-05
Anticipated expiration: 2033-04-20

Abstract

The utility model relates to an immersed battery cooling device which comprises a shell, a battery cell group, a shunt pipe and a collector pipe, wherein the shell is provided with a containing cavity. The battery cell group comprises a plurality of single battery cells, the plurality of single battery cells are arranged in a matrix form in the accommodating cavity to form the battery cell group, the adjacent single battery cells are arranged at intervals to form a gap runner, the top of the battery cell group and the top wall of the accommodating cavity are arranged at intervals to form a top runner, and one or more gap runners are respectively communicated with the top runner to form a heat exchange channel. The shunt tubes and the current collecting pipes are respectively arranged on two opposite sides of the battery cell group, a plurality of shunt holes are formed in one end, close to the battery cell group, of each shunt hole is respectively communicated with a gap runner between adjacent single battery cells or a top runner, and the shunt tubes are communicated with the current collecting pipes through the plurality of shunt holes and the heat exchange channels. The immersed battery cooling device provided by the utility model solves the problem of low cooling efficiency of the existing battery pack cooling mode.

Description

Immersed battery cooling device

Technical Field

The utility model relates to the technical field of battery cooling devices, in particular to an immersed battery cooling device.

Background

Along with the increasing requirements of new energy automobiles on endurance, the electric quantity of the battery pack is continuously increased, the energy density of the battery cells in the battery pack is also continuously increased, and further, in order to increase the charging rate of the battery pack, the quick charging rate of the battery pack is also increasingly increased, so that the heating value of the battery cells in the battery pack is also continuously increased. In addition, with the popularization of the high-voltage platforms, higher requirements are also put on the heat dissipation of high-voltage components in the battery packs. As such, the existing cooling methods (mainly including air cooling and liquid cooling plate cooling) cannot meet the cooling requirement of the battery pack.

Disclosure of Invention

Accordingly, it is necessary to provide an immersion battery cooling apparatus to solve the problem of low cooling efficiency of the conventional battery pack cooling method.

The utility model provides an immersed battery cooling device which comprises a shell, a battery cell group, a shunt pipe and a collector pipe, wherein the shell is provided with a containing cavity, and the battery cell group, the shunt pipe and the collector pipe are all arranged in the containing cavity. The battery cell group comprises a plurality of single battery cells, the plurality of single battery cells are arranged in a matrix form in the accommodating cavity to form the battery cell group, the adjacent single battery cells are arranged at intervals to form a gap runner, the top of the battery cell group and the top wall of the accommodating cavity are arranged at intervals to form a top runner, and one or more gap runners are respectively communicated with the top runner to form a heat exchange channel. The shunt tubes and the current collecting pipes are respectively arranged on two opposite sides of the battery cell group, a plurality of shunt holes are formed in one end, close to the battery cell group, of each shunt hole is respectively communicated with a gap runner between adjacent single battery cells or a top runner, and the shunt tubes are communicated with the current collecting pipes through the plurality of shunt holes and the heat exchange channels.

In one embodiment, a first preset direction a is defined along the direction from the shunt pipe to the collecting pipe, the cell groups comprise a plurality of groups of cell rows arranged at intervals along the first preset direction a, a plurality of single cells arranged at intervals along a second preset direction b are arranged in each cell row, and the first preset direction a and the second preset direction b are vertically arranged. And, the interval sets up between the adjacent single electric core in each electric core row and forms first runner, and the interval sets up between the adjacent electric core row and forms the second runner, and first runner and second runner alternately communicate and form the clearance runner.

In one embodiment, the submerged battery cooling device further comprises a guide plate, the guide plate is arranged between the adjacent battery cell rows, one end of the guide plate extends towards the top wall of the accommodating cavity and cuts off the top flow channel, the other end of the guide plate extends towards the second flow channel, and one end of the guide plate extending into the second flow channel is provided with a communication port, so that the top flow channels positioned on two sides of the guide plate can be mutually communicated through the communication port.

In one embodiment, the plurality of communication ports are uniformly spaced along the second preset direction b, and the communication ports are correspondingly arranged with the first flow channels.

In one embodiment, the end of the guide plate extending into the second flow channel and the bottom wall of the accommodating cavity are arranged at intervals to form a communication port.

In one embodiment, the housing comprises a bottom shell and an upper cover, the bottom shell and the upper cover enclose to form a containing cavity, the immersed battery cooling device further comprises a fixing support, the fixing support is arranged in the containing cavity and fixedly connected with the bottom shell, the fixing support is provided with a plurality of fixing grooves, and one or a plurality of single battery cells are arranged in each fixing groove.

In one embodiment, the side walls of the single cells and the fixed slots are arranged at intervals, and structural adhesive is filled in gaps between the single cells and the fixed slots and gaps between adjacent single cells, so that the single cells in each fixed slot and the inner walls of the fixed slots are bonded through the structural adhesive.

In one embodiment, the submerged battery cooling device further comprises a bottom guard plate, the bottom guard plate is mounted on one side, deviating from the upper cover, of the bottom guard plate, a compression-resistant cavity is formed between the bottom guard plate and the bottom shell, a plurality of reinforcing ribs are arranged in the compression-resistant cavity, one end of each reinforcing rib is connected with the bottom guard plate, and the other end of each reinforcing rib extends towards the direction close to the bottom shell and is abutted to the bottom shell.

In one embodiment, the shunt tube comprises a shunt main tube and a liquid inlet tube, wherein a plurality of shunt holes are arranged at intervals at one end of the shunt main tube, which is close to the cell group, and the liquid inlet tube is arranged at one end of the shunt main tube, which is far away from the cell group, and is communicated with the shunt main tube.

In one embodiment, the adjacent single cells are uniformly spaced apart, the plurality of shunt holes are uniformly spaced apart, and the shunt holes and the gap flow channels are correspondingly arranged.

In one embodiment, the vertical height of the shunt is the same as the top height of the cell stack.

Compared with the prior art, the immersed battery cooling device provided by the utility model has the advantages that the battery cell is arranged in the accommodating cavity, and the accommodating cavity is internally provided with the clearance runner and the top runner which can pass through the heat exchange medium, wherein the clearance runner is positioned at the side part of the single battery cell, and the top runner is positioned at the top part of the single battery cell, so that the single battery cell is immersed in the heat exchange medium, and the single battery cell has five surfaces which can be contacted with the heat exchange medium. Therefore, the contact area of the single electric core in the electric core group and the heat exchange medium is greatly increased, and the heat exchange efficiency of the single electric core in the electric core group and the heat exchange medium is greatly increased.

Further, because the electric core group is located and holds the intracavity, therefore, the maximum height of electric core group is less than the height of holding the roof of chamber, again because the top of electric core group and the roof interval setting who holds the chamber, therefore, the top runner is located the top of electric core group, namely the top runner is located the top of clearance runner, so, the heat transfer medium that is located the top runner has the trend that flows towards the clearance runner under the action of gravity, so that the heat transfer medium of top runner and the heat transfer medium in the clearance runner can intensive mixing, improve the temperature homogeneity of heat transfer medium, prevent the electric core group heat transfer inequality of different positions department.

Furthermore, the shunt pipe and the collecting pipe are further arranged in the accommodating cavity, and the shunt pipe is communicated with the collecting pipe through the plurality of shunt holes and the heat exchange channel. So, the heat transfer medium can directly get into the different regions of heat transfer channel through the reposition of redundant personnel hole of shunt tubes, has improved heat transfer channel's feed liquor efficiency greatly for the heat transfer medium in the heat transfer channel can carry out quick replacement, thereby further improves the heat transfer efficiency of heat transfer medium and electric core group.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present utility model, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is an exploded view of an immersion battery cooling apparatus according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a submerged battery cooling apparatus according to one embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an immersion battery cooling apparatus according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a partial structure of an immersion battery cooling apparatus according to an embodiment of the present utility model;

fig. 5 is a schematic arrangement structure of a battery cell set according to an embodiment of the utility model.

Reference numerals: 100. a housing; 110. a bottom case; 111. a partition plate; 120. an upper cover; 130. a receiving chamber; 131. a battery cavity; 132. a high voltage device cavity; 133. a gap flow channel; 134. a top flow channel; 135. a heat exchange channel; 136. a first flow passage; 137. a second flow passage; 140. welding holes; 200. a cell group; 210. a cell row; 220. a single cell; 300. a shunt; 310. a split main pipe; 311. a diversion aperture; 320. a liquid inlet pipe; 400. collecting pipes; 410. a collecting main pipe; 420. a liquid outlet pipe; 500. a fixed bracket; 510. a fixing groove; 520. structural adhesive; 600. a bottom guard board; 610. a compression resistant cavity; 620. reinforcing ribs; 700. a deflector; 710. and a communication port.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-5, the problem of low cooling efficiency in the conventional cooling method of the battery pack is solved. The utility model provides an immersed battery cooling device, which comprises a shell 100, a battery cell group 200, a shunt tube 300 and a collector tube 400, wherein the shell 100 is provided with a containing cavity 130, and the battery cell group 200, the shunt tube 300 and the collector tube 400 are all arranged in the containing cavity 130. The battery cell group 200 includes a plurality of single battery cells 220, and the plurality of single battery cells 220 are arranged in a matrix in the accommodating cavity 130 to form the battery cell group 200, adjacent single battery cells 220 are arranged at intervals to form the gap flow channels 133, and the top of the battery cell group 200 and the top wall of the accommodating cavity 130 are arranged at intervals to form the top flow channels 134, and one or more gap flow channels 133 are respectively communicated with the top flow channels 134 to form the heat exchange channels 135. The shunt tubes 300 and the current collecting tubes 400 are respectively arranged at two opposite sides of the cell group 200, a plurality of shunt holes 311 are arranged at one end of the shunt tubes 300 close to the cell group 200, and each shunt hole 311 is respectively communicated with a gap runner 133 between adjacent single cells 220 or respectively communicated with a top runner 134. And, the shunt tubes 300 communicate with the header 400 through the plurality of shunt holes 311 and the heat exchanging channels 135.

It should be noted that, the battery cell set 200 is disposed at the bottom of the accommodating cavity 130, so that the accommodating cavity 130 carries out load bearing on the battery cell set 200.

Further, it should be noted that, the top of the battery cell 200 and the top wall of the accommodating cavity 130 are both relative concepts, that is, in the gravity reference system, the top of the battery cell 200 refers to the portion of the battery cell 200 with the highest vertical height, and the top wall of the accommodating cavity 130 refers to the inner wall of the accommodating cavity 130 with the highest vertical height.

As can be seen from the above, the battery cell set 200 is disposed in the accommodating cavity 130, and the accommodating cavity 130 is provided with the gap flow channel 133 and the top flow channel 134 capable of passing through the heat exchange medium, wherein the gap flow channel 133 is located at the side portion of the single battery cell 220, and the top flow channel 134 is located at the top portion of the single battery cell 220, so that it can be seen that the single battery cell 220 is immersed in the heat exchange medium, and the single battery cell 220 has five surfaces capable of contacting the heat exchange medium. Thus, the contact area between the single cell 220 in the cell group 200 and the heat exchange medium is greatly increased, and the heat exchange efficiency between the single cell 220 in the cell group 200 and the heat exchange medium is greatly increased.

Further, since the battery cell group 200 is disposed in the accommodating cavity 130, the maximum height of the battery cell group 200 is lower than the height of the top wall of the accommodating cavity 130, and since the top of the battery cell group 200 and the top wall of the accommodating cavity 130 are disposed at intervals, the top flow channel 134 is disposed above the battery cell group 200, that is, the top flow channel 134 is disposed above the gap flow channel 133, so that the heat exchange medium in the top flow channel 134 has a tendency to flow towards the gap flow channel 133 under the action of gravity, so that the heat exchange medium in the top flow channel 134 and the heat exchange medium in the gap flow channel 133 can be fully mixed, the temperature uniformity of the heat exchange medium is improved, and uneven heat exchange of the battery cell group 200 at different positions is prevented.

Further, since the shunt tube 300 and the header 400 are further disposed in the accommodating chamber 130, the shunt tube 300 is communicated with the header 400 through the plurality of shunt holes 311 and the heat exchange channels 135. In this way, the heat exchange medium can directly enter different areas of the heat exchange channel 135 through the split holes 311 of the split pipe 300, so that the liquid inlet efficiency of the heat exchange channel 135 is greatly improved, the heat exchange medium in the heat exchange channel 135 can be rapidly replaced, and the heat exchange efficiency of the heat exchange medium and the battery cell group 200 is further improved.

Further, a nozzle (not shown) may be provided at the diverting hole 311 to enhance the injection rate of the heat exchange medium.

In an embodiment, the sidewalls of the single cell 220 and the accommodating chamber 130 may be spaced apart, that is, the gap flow channel 133 may also include a flow channel formed by spacing between the sidewalls of the single cell 220 and the accommodating chamber 130.

In one embodiment, as shown in fig. 5, adjacent single cells 220 are uniformly spaced apart, a plurality of split holes 311 are uniformly spaced apart, and the split holes 311 are correspondingly arranged with the gap runners 133.

In this way, the uniformity of heat exchange between the heat exchange medium in the accommodating chamber 130 and the cell stack 200 is enhanced.

It should be noted that, as shown in fig. 2, the side wall of the housing 100 is provided with a welding hole 140, and the shunt tube 300 and the collector tube 400 are respectively welded to the housing 100 through the welding holes 140 at both sides of the housing 100.

Specifically, in an embodiment, as shown in fig. 1-4, the shunt tube 300 includes a shunt main tube 310 and a liquid inlet tube 320, the shunt main tube 310 extends along the arrangement direction of the plurality of single cells 220, the plurality of shunt holes 311 are disposed at intervals at one end of the shunt main tube 310 near the cell group 200, and the liquid inlet tube 320 is disposed at one end of the shunt main tube 310 far from the cell group 200 and is communicated with the shunt main tube 310.

As such, the heat exchange medium enters the split main pipe 310 from the liquid inlet pipe 320 and is split into the split main pipe 310 to the respective split holes 311.

It should be noted that, in order to improve the split-flow uniformity of the split-flow tube 300, the liquid inlet tube 320 is disposed at the middle portion of the split-flow main tube 310.

Further, in one embodiment, as shown in fig. 3, the vertical height of the shunt 300 is flush with the top height of the cell stack 200. That is, the vertical height of the shunt tube 300 is equal to the vertical height where the gap flow channel 133 and the top flow channel 134 communicate.

In this way, a part of the heat exchange medium entering the accommodating cavity 130 through the split hole 311 directly enters the gap flow channel 133, and another part enters the top flow channel 134, and the heat exchange medium entering the gap flow channel 133 and the heat exchange medium entering the top flow channel 134 can be mixed with each other, so that the utilization rate of the heat exchange medium is enhanced.

In an embodiment, as shown in fig. 1-4, the collecting pipe 400 includes a collecting main pipe 410 and a liquid outlet pipe 420, the length direction of the collecting main pipe 410 is the same as the length direction of the distributing main pipe 310, one end of the collecting main pipe 410, which is close to the cell group 200, is provided with one or more collecting holes (not shown), and the liquid outlet pipe 420 is provided at one end of the collecting main pipe 410, which is far from the cell group 200, and is communicated with the collecting main pipe 410.

In this manner, the heat exchange medium after heat exchange is introduced into the header 410 through one or more header holes, and then the heat exchange medium in the header 410 is discharged from the outlet pipe 420 out of the header 410.

Further, in an embodiment, the header 400 is disposed at the bottom of the accommodating chamber 130.

In this manner, the heat exchange medium is facilitated to enter the header 400.

In one embodiment, as shown in fig. 2 and 4, the housing 100 includes a bottom case 110 and an upper cover 120, and the bottom case 110 and the upper cover 120 enclose a receiving chamber 130. The submerged battery cooling device further comprises a fixing bracket 500, wherein the fixing bracket 500 is arranged in the accommodating cavity 130 and fixedly connected with the bottom shell 110, the fixing bracket 500 is provided with a plurality of fixing grooves 510, and one or a plurality of single battery cells 220 are arranged in each fixing groove 510.

The thickness of the bottom chassis 110 is between 2mm and 2.5mm, and the depth of the fixing groove 510 is about 15 mm.

By the arrangement, the single battery cell 220 can be prevented from moving in the accommodating cavity 130, and the assembly firmness of the battery cell group 200 and the safety of the battery pack are improved.

Further, in an embodiment, as shown in fig. 2 and 4, the bottom shell 110 is formed by processing and assembling hollow profiles, which is beneficial to reducing the weight of the bottom shell 110 and the whole submerged battery cooling device and improving the energy density of the battery pack. And the hollowed section bar has better structural strength and bending resistance, and is beneficial to improving the structural strength of the battery pack.

Further, in an embodiment, as shown in fig. 2, the single cells 220 and the side walls of the fixing slots 510 are arranged at intervals, and the gaps between the single cells 220 and the fixing slots 510 and the gaps between adjacent single cells 220 are filled with structural adhesive 520, so that the single cells 220 in each fixing slot 510 and the inner walls of the fixing slots 510 are adhered to each other.

It should be noted that, the structural adhesive 520 refers to an adhesive for bonding structural members, which has high strength (the adhesive compression strength is >65MPa, the forward pull connection strength of the adhesive is >30MPa, and the adhesive shear strength is >18 MPa), and is suitable for bearing a large load.

In this way, the mounting firmness of the cell stack 200 is further improved.

In one embodiment, as shown in fig. 1 and 2, a partition plate 111 connected to the bottom case 110 is provided in the accommodating chamber 130, and the partition plate 111 partitions the accommodating chamber 130 to form a battery chamber 131 and a high-voltage device chamber 132 which are communicated. The battery cell 200 is disposed in the battery cavity 131, and the high-voltage device cavity 132 is used for accommodating high-voltage devices.

Therefore, the high-voltage component can be immersed in the heat exchange medium, and the heat dissipation efficiency of the high-voltage component is greatly improved.

In an embodiment, as shown in fig. 2, the submerged battery cooling device further includes a bottom protection plate 600, where the bottom protection plate 600 is installed on a side of the bottom shell 110 away from the upper cover 120, and a compression-resistant cavity 610 is disposed between the bottom protection plate 600 and the bottom shell 110, and a plurality of reinforcing ribs 620 are disposed in the compression-resistant cavity 610, one end of each reinforcing rib 620 is connected to the bottom protection plate 600, and the other end extends toward a direction close to the bottom shell 110 and abuts against the bottom shell 110.

By providing the bottom guard plate 600, the structural strength of the case 100 is further enhanced, thereby improving the safety of the battery pack. And, be equipped with resistance to compression chamber 610 between backplate 600 and the drain pan 110, for providing deformation space between backplate 600 and the drain pan 110, can make backplate 600 receive after the external force impact towards resistance to compression chamber 610 deformation, and can not directly cause the deformation of drain pan 110, and then effectively protect electric core group 200 to receive the external force to destroy.

It should be noted that, since the cell stack 200 is spaced from the top wall of the accommodating cavity 130, a sufficient deformation space is reserved at the top of the cell stack 200. In combination with the above embodiment, certain deformation spaces are reserved on both sides of the battery cell set 200, so that the safety of the battery cell set 200 is greatly improved.

Further, the pressure resistant chamber 610 can also be used to contain leaked heat exchange medium.

Further, by providing the reinforcing ribs 620, the structural strength of the bottom guard plate 600 is further improved.

It should be noted that, the housing 100 and the bottom guard 600 are both made of metal, specifically, aluminum alloy and iron alloy.

Further, in an embodiment, the bottom guard 600 and the bottom case 110 are both press-formed members, and the thickness of the bottom guard 600 is between 1mm and 1.5mm, but not limited thereto, the bottom guard 600 and the bottom case 110 may be welded members.

In an embodiment, as shown in fig. 5, defining the direction from the shunt 300 to the header 400 as a first preset direction a, the cell group 200 includes a plurality of groups of cell rows 210 arranged at intervals along the first preset direction a, and a plurality of single cells 220 arranged at intervals along a second preset direction b are arranged in each cell row 210, where the first preset direction a and the second preset direction b are perpendicular to each other. And, the adjacent single cells 220 in each cell row 210 are arranged at intervals to form a first runner 136, the adjacent cell rows 210 are arranged at intervals to form a second runner 137, and the first runner 136 and the second runner 137 are communicated in a crossing manner to form a gap runner 133.

In this way, the arrangement of the single cells 220 in the cell group 200 is more regular, which is beneficial for the uniform flow of the heat exchange medium in the gap flow channel 133.

Specifically, in the present embodiment, the battery cell group 200 includes three battery cell rows 210, the number of single battery cells 220 in each battery cell row 210 is greater than 8, and the single battery cells 220 are all square battery cells.

Further, in an embodiment, as shown in fig. 2-4, the submerged battery cooling device further includes a flow guiding plate 700, the flow guiding plate 700 is disposed between the adjacent battery cell rows 210, one end of the flow guiding plate 700 extends towards the top wall of the accommodating cavity 130 and blocks the top flow channel 134, the other end of the flow guiding plate 700 extends towards the second flow channel 137, and a communication port 710 is provided at one end of the flow guiding plate 700 extending into the second flow channel 137, so that the top flow channels 134 located at two sides of the flow guiding plate 700 can communicate with each other through the communication port 710.

When the heat exchange medium in the flow channel in the top flow channel 134 is blocked by the flow guide plate 700, the heat exchange medium can enter the second flow channel 137 from the top flow channel 134 along the flow guide plate 700 and enter the other side of the flow guide plate 700 through the communication port 710, and finally part of the heat exchange medium enters the next-stage gap flow channel 133, and the other part of the heat exchange medium reenters the top flow channel 134. By the arrangement, the turbulence effect of the heat exchange medium in the heat exchange channel 135 is greatly enhanced, and the heat exchange efficiency of the heat exchange medium is improved.

Further, in an embodiment, as shown in fig. 2 and 4, the plurality of communication ports 710 are uniformly spaced along the second preset direction b, and the communication ports 710 are correspondingly arranged with the first flow channels 136 between the adjacent cells.

However, in other embodiments, the end of the baffle 700 extending into the second flow channel 137 is spaced apart from the bottom wall of the accommodating chamber 130 to form the communication port 710.

In one embodiment, the baffle 700 is welded to the inner wall of the bottom plate, or the baffle 700 is welded to the inner wall of the upper cover 120.

In one embodiment, the end of the baffle 700 that extends into the top flow channel 134 is bent toward the direction of approach to the shunt 300. In this way, the heat exchange medium is facilitated to quickly enter the second flow channel 137 through the inclined flow guide plate 700.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.

Claims

1. The immersed battery cooling device is characterized by comprising a shell (100), a battery cell group (200), a shunt tube (300) and a collecting tube (400), wherein the shell (100) is provided with a containing cavity (130), and the battery cell group (200), the shunt tube (300) and the collecting tube (400) are all arranged in the containing cavity (130);

the battery cell group (200) comprises a plurality of single battery cells (220), the plurality of single battery cells (220) are arranged in a matrix form in the accommodating cavity (130) to form the battery cell group (200), adjacent single battery cells (220) are arranged at intervals to form a gap runner (133), the top of the battery cell group (200) and the top wall of the accommodating cavity (130) are arranged at intervals to form a top runner (134), and one or more gap runners (133) are respectively communicated with the top runner (134) to form a heat exchange channel (135);

the utility model discloses a battery cell group (200) including electric core, electric core group (200) including electric core group, shunt tubes (300) and pressure manifold (400) are located respectively the both sides that electric core group (200) are relative, shunt tubes (300) are close to one end of electric core group (200) is equipped with a plurality of branch flow holes (311), and each branch flow hole (311) communicate respectively adjacent clearance runner (133) between single electric core (220) or communicate respectively top runner (134), and shunt tubes (300) are through a plurality of branch flow hole (311) and heat transfer passageway (135) intercommunication pressure manifold (400).

2. The submerged battery cooling apparatus according to claim 1, wherein a first preset direction a is defined along a direction from the shunt pipe (300) to the collecting pipe (400), the battery cell group (200) comprises a plurality of groups of battery cell rows (210) arranged at intervals along the first preset direction a, and a plurality of single battery cells (220) arranged at intervals along a second preset direction b are arranged in each battery cell row (210), and the first preset direction a and the second preset direction b are arranged vertically;

and, the adjacent single cells (220) in each cell row (210) are arranged at intervals to form a first runner (136), the adjacent cell rows (210) are arranged at intervals to form a second runner (137), and the first runner (136) and the second runner (137) are communicated in a crossing way to form the gap runner (133).

3. The submerged battery cooling apparatus according to claim 2, further comprising a baffle (700), the baffle (700) being provided between adjacent ones of the cell rows (210), one end of the baffle (700) extending toward a top wall of the accommodating chamber (130) and blocking the top flow channel (134), the other end of the baffle (700) extending toward the second flow channel (137), and one end of the baffle (700) extending into the second flow channel (137) being provided with a communication port (710) so that the top flow channels (134) located on both sides of the baffle (700) can communicate with each other through the communication port (710).

4. A submerged battery cooling apparatus according to claim 3, wherein a plurality of the communication ports (710) are provided at regular intervals along the second preset direction b, and the communication ports (710) and the first flow channels (136) are provided correspondingly;

or, one end of the guide plate (700) extending into the second flow channel (137) and the bottom wall of the accommodating cavity (130) are arranged at intervals to form the communication port (710).

5. The submerged battery cooling apparatus according to claim 1, wherein the housing (100) comprises a bottom shell (110) and an upper cover (120), the bottom shell (110) and the upper cover (120) enclose to form the accommodating cavity (130), the submerged battery cooling apparatus further comprises a fixing bracket (500), the fixing bracket (500) is arranged in the accommodating cavity (130) and fixedly connected with the bottom shell (110), the fixing bracket (500) is provided with a plurality of fixing grooves (510), and one or more single battery cells (220) are arranged in each fixing groove (510).

6. The submerged battery cooling apparatus of claim 5, wherein the single cells (220) and the side walls of the fixing grooves (510) are arranged at intervals, and structural adhesives (520) are filled in gaps between the single cells (220) and the fixing grooves (510) and gaps between adjacent single cells (220), so that the single cells (220) in each fixing groove (510) and the inner walls of the fixing grooves (510) are bonded through the structural adhesives (520).

7. The submerged battery cooling apparatus of claim 5, further comprising a bottom guard plate (600), wherein the bottom guard plate (600) is mounted on one side of the bottom shell (110) away from the upper cover (120), a compression-resistant cavity (610) is arranged between the bottom guard plate (600) and the bottom shell (110), a plurality of reinforcing ribs (620) are arranged in the compression-resistant cavity (610), one end of each reinforcing rib (620) is connected with the bottom guard plate (600), and the other end of each reinforcing rib extends towards a direction close to the bottom shell (110) and is abutted to the bottom shell (110).

8. The submerged battery cooling apparatus of claim 1, wherein the shunt tube (300) comprises a shunt main tube (310) and a liquid inlet tube (320), a plurality of the shunt holes (311) are arranged at intervals at one end of the shunt main tube (310) close to the battery cell group (200), and the liquid inlet tube (320) is arranged at one end of the shunt main tube (310) far away from the battery cell group (200) and is communicated with the shunt main tube (310).

9. The submerged battery cooling apparatus according to claim 1, wherein adjacent single cells (220) are arranged at even intervals, a plurality of the shunt holes (311) are arranged at even intervals, and the shunt holes (311) and the gap flow channels (133) are arranged correspondingly.

10. The submerged battery cooling apparatus of claim 1, characterized in that the vertical height of the shunt tube (300) is the same as the top height of the cell stack (200).