CN220585316U - Liquid cooling plate, battery pack box and battery pack - Google Patents
Liquid cooling plate, battery pack box and battery pack Download PDFInfo
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- CN220585316U CN220585316U CN202322268462.9U CN202322268462U CN220585316U CN 220585316 U CN220585316 U CN 220585316U CN 202322268462 U CN202322268462 U CN 202322268462U CN 220585316 U CN220585316 U CN 220585316U
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- 239000007788 liquid Substances 0.000 title claims abstract description 560
- 238000001816 cooling Methods 0.000 title claims abstract description 380
- 239000000110 cooling liquid Substances 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000004964 aerogel Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a liquid cooling plate, a battery pack box body and a battery pack, and belongs to the technical field of battery packs. The liquid cooling plate is provided with a first liquid cooling flow channel and a second liquid cooling flow channel, the battery pack box body is internally provided with the liquid cooling plate and the side liquid cooling plate, and cooling liquid enters the side liquid cooling plate through the first liquid cooling flow channel to replace pipeline connection. And the battery pack is formed by placing the battery cells between the side liquid cooling plates in the battery pack box body, cooling liquid enters the side liquid cooling plates through the first liquid cooling flow channels to cool the two end faces of the battery cells, and cooling liquid cools the bottom faces of the battery cells through the second liquid cooling flow channels to form three-face cooling of the battery, so that the cooling efficiency of the battery is improved. And reduce the pipeline setting in the battery package, improve the group's efficiency of battery. The side liquid cooling plate cools the end face of the battery core and the second liquid cooling runner cools the bottom face of the battery in parallel and independently, so that the cooling efficiency is improved, and meanwhile, the temperature uniformity in the battery cooling process is better.
Description
Technical Field
The utility model relates to the technical field of battery packs, in particular to a liquid cooling plate, a battery pack box body and a battery pack.
Background
With the development of society, in a fast-paced living state, the automobile travel is called more and more people's selection, the development energy conservation and the new energy automobile without waste emission are highly valued by various countries, the effort of searching for alternative travel energy and travel mode is aimed at the energy problem, the new energy automobile market is developed in a large scale under huge market prospect, the development is rapid from this, the power battery system is used as the power source of the new energy automobile, and the safe and reliable whole system is vital. Along with the traveling demands of people and the use convenience of new energy automobiles, the requirements of new energy electric car users on the endurance mileage are higher and higher, and the energy density of the battery system is improved to be the development trend of the battery system.
In order to improve the endurance mileage of the electric car and improve the energy density of the battery, a non-module battery system, for example, a non-module battery system disclosed in chinese patent CN114665177a, is adopted, and compared with a conventional module battery system, the space utilization of the system is greatly improved, so that the energy density of the whole battery system is obviously improved.
On the other hand, the improvement of the endurance mileage is achieved, and in terms of the convenience of use, people pursue the rapidness of battery charging at the same time. Battery suppliers and whole car manufacturers are more prone to develop super fast charging technology and shorten charging time, but high-rate charging means that the heating value of a battery cell in unit time rises exponentially, the charging rate can be limited in reverse by the fact that the temperature of the battery cell rises rapidly in a short time, the battery cell is mainly cooled in a bottom liquid cooling plate mode in the current battery pack thermal management design, the battery cell is limited by the power of a compressor and the contact area between the liquid cooling plate and the battery cell, the cooling mode has limited cooling efficiency, and the heating value of the battery cell is extremely large in a high-rate fast charging state, so that the cooling requirement is difficult to reach.
Chinese patent CN114725566a discloses a liquid cooling battery pack, although the liquid cooling plates are added to two sides of the battery, more pipelines are also arranged to connect the liquid cooling plates, thereby occupying space in the battery pack and affecting energy density of the battery.
Therefore, how to provide a battery pack capable of satisfying the cooling requirement of the battery under fast charging and reducing the occupied space of the liquid cooling system and the influence on the battery energy density is a problem to be solved.
Disclosure of Invention
1. Technical problem to be solved by the utility model
The utility model provides a liquid cooling plate, a battery pack box body and a battery pack, wherein a first liquid cooling flow channel and a second liquid cooling flow channel are arranged on the liquid cooling plate, a side liquid cooling plate is arranged in the battery pack box body, the side liquid cooling plate is connected through the first liquid cooling flow channel, a pipeline is replaced by shunting, the space occupied in the battery pack by the pipeline is reduced, the cooling area of the battery is increased, the cooling efficiency of the battery is improved, and the problems of low heat dissipation efficiency when the battery is charged and discharged quickly and large occupied space of a cooling system are solved.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
the liquid cooling plate comprises a flow channel layer, wherein a liquid cooling flow channel, a total liquid inlet and a total liquid outlet which are communicated with the liquid cooling flow channel are arranged in the flow channel layer, the liquid cooling flow channel further comprises a first liquid cooling flow channel and a second liquid cooling flow channel, and inlets and outlets of the first liquid cooling flow channel and the second liquid cooling flow channel are respectively communicated with the total liquid inlet and the total liquid outlet;
the first liquid cooling flow channel comprises a first liquid inlet flow channel and a first liquid return flow channel, a plurality of first liquid cooling flow channel liquid outlets are formed in the first liquid inlet flow channel, and a plurality of first liquid cooling flow channel liquid inlets are formed in the first liquid return flow channel; the inlet of the first liquid inlet flow channel is communicated with the total liquid inlet, and the outlet of the first liquid inlet flow channel is communicated with the liquid outlet of the first liquid cooling flow channel; the inlet of the first liquid return flow channel is communicated with the liquid inlet of the first liquid cooling flow channel, and the outlet is communicated with the total liquid outlet.
Further, the liquid outlets of the first liquid cooling runners are in one-to-one correspondence with the liquid inlets of the first liquid cooling runners.
Further, the second liquid cooling runner comprises a second liquid inlet runner and a second liquid return runner which are communicated together, an inlet of the second liquid inlet runner is communicated with the total liquid inlet, and an outlet of the second liquid return runner is communicated with the total liquid outlet.
The utility model also provides a battery pack box body, which comprises the liquid cooling plate, wherein the liquid cooling plate is arranged at the bottom of the box body; the device also comprises a plurality of side liquid cooling plates, wherein the side liquid cooling plates are arranged on the liquid cooling plates at intervals; the side liquid cooling plate is provided with a side plate liquid cooling flow passage, a side plate liquid cooling flow passage inlet and a side plate liquid cooling flow passage outlet, wherein the side plate liquid cooling flow passage inlet and the side plate liquid cooling flow passage outlet are communicated with the side plate liquid cooling flow passage; the side plate liquid cooling runner inlet is correspondingly connected with a first liquid cooling runner liquid outlet, and the side plate liquid cooling runner outlet is correspondingly connected with a first liquid cooling runner liquid inlet.
Further, a side liquid cooling plate liquid inlet flow channel and a side liquid cooling plate liquid return flow channel which are communicated are arranged in the side liquid cooling plate, an inlet of the side liquid cooling plate liquid inlet flow channel is a side plate liquid cooling flow channel inlet, and an outlet of the side liquid cooling plate liquid return flow channel is a side plate liquid cooling flow channel outlet.
Further, the side liquid cooling plate liquid inlet channel is located at one side far away from the bottom of the box body, and the side liquid cooling plate liquid return channel is located at one side close to the bottom of the box body.
Further, the first liquid cooling runner is communicated with the side liquid cooling plate through a hose assembly, the hose assembly comprises a liquid inlet hose and a liquid outlet hose, one end of the liquid inlet hose is connected with the side plate liquid cooling runner inlet, and the other end of the liquid inlet hose is connected with the liquid outlet of the first liquid cooling runner; one end of the liquid outlet hose is connected with the outlet of the side plate liquid cooling runner, and the other end of the liquid outlet hose is connected with the liquid inlet of the first liquid cooling runner.
Further, the flow channel trend of the liquid inlet flow channel of the side liquid cooling plate and the flow return flow channel of the side liquid cooling plate is consistent with the flow channel trend of the second liquid cooling flow channel.
Further, the box comprises a bottom plate and side plates surrounding the bottom plate, and the total liquid inlet and the total liquid outlet are positioned on the outer sides of the side plates.
The utility model also provides a battery pack, which comprises the battery pack box body and a battery core, wherein the large surfaces of the battery core are mutually close to each other and are stacked between the adjacent side liquid cooling plates.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects: the liquid cooling plate is provided with the first liquid cooling flow passage and the second liquid cooling flow passage, the two flow passages are mutually independent, and the first liquid cooling flow passage is used for replacing pipeline connection, so that the occupied space of the pipeline is reduced. The battery pack box body is internally provided with a liquid cooling plate and a side liquid cooling plate, and cooling liquid enters the side liquid cooling plate through a first liquid cooling runner to replace pipe connection, and only a hose with small occupied space is arranged. And the battery pack is formed by placing the battery cells between the side liquid cooling plates in the battery pack box body, cooling liquid enters the side liquid cooling plates through the first liquid cooling flow channels to cool the two end faces of the battery cells, and cooling liquid cools the bottom faces of the battery cells through the second liquid cooling flow channels to form three-face cooling of the battery, so that the cooling efficiency of the battery is improved. And the battery pack reduces the pipeline setting, improves the group efficiency of battery. The side liquid cooling plate cools the end face of the battery core and the second liquid cooling runner cools the bottom face of the battery in parallel and independently, so that the cooling efficiency is improved, and meanwhile, the temperature uniformity in the battery cooling process is better.
Drawings
FIG. 1 is a schematic diagram of a battery pack;
FIG. 2 is a schematic view of the interior of a battery pack case;
FIG. 3 is a schematic diagram of the connection of a liquid cooling plate to a side liquid cooling plate;
FIG. 4 is a schematic diagram of a liquid cooling plate flow channel;
FIG. 5 is a schematic diagram of a liquid cooling plate flow channel;
fig. 6 is a schematic diagram of a side liquid cooling structure.
Reference numerals in the schematic drawings illustrate:
1. a case; 2. a battery cell; 3. an aerogel layer;
4. a hose assembly; 40. a liquid inlet hose; 41. a liquid outlet hose; 401. a liquid inlet hose outlet; 402. a liquid inlet hose inlet;
5. an upper plate; 50. A liquid outlet nozzle of the liquid cooling plate; 51. Liquid inlet nozzle of liquid cooling plate;
6. a liquid cooling plate total joint; 60. A total liquid inlet joint; 61. A total liquid outlet joint;
7. a side liquid cooling plate; 70. a liquid inlet nozzle of the side liquid cooling plate; 71. a liquid outlet nozzle of the side liquid cooling plate; 73. a liquid inlet flow passage of the side liquid cooling plate; 74. a side liquid cooling plate liquid return channel; 75. a side liquid cooling plate plug;
8. a heat conducting adhesive layer;
9. a flow channel layer; 90. a total liquid inlet; 91. a total liquid outlet; 901. a first liquid inlet flow passage; 902. a second liquid inlet flow passage; 903. a liquid outlet of the first liquid cooling runner; 911. a first return flow path; 912. a second liquid return flow channel; 913. a first liquid cooling runner liquid inlet; 914. a first liquid cooling flow passage; 915. and a second liquid cooling flow passage.
Detailed Description
The present utility model will be described in detail below with reference to the accompanying drawings. What has been described herein is merely a preferred embodiment according to the present utility model, and other ways of implementing the utility model will occur to those skilled in the art on the basis of the preferred embodiment, and are within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated in terms of "horizontal", "vertical", "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the electric connection can be realized by mechanical connection or electric connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
The embodiment provides a liquid cooling plate, as shown in fig. 4 and 5, including runner layer 9, upper plate 5 and hypoplastron, runner layer 9 is located between upper plate 5 and the hypoplastron, and runner layer 9, upper plate 5 and hypoplastron can be through the fixed bonding of glue together, and the glue that is used for the bonding can select the heat conduction glue, does benefit to cold volume or heat transfer.
The liquid cooling runner is arranged in the runner layer 9, and the total liquid inlet 90 and the total liquid outlet 91 which are communicated with the liquid cooling runner are arranged, and the liquid cooling runner further comprises a first liquid cooling runner 914 and a second liquid cooling runner 915, wherein the total inlet and outlet of the first liquid cooling runner 914 and the total outlet of the second liquid cooling runner 915 are respectively communicated with the total liquid inlet 90 and the total liquid outlet 91. In addition, in this embodiment, five first liquid cooling flow channel liquid outlets 903 and five first liquid cooling flow channel liquid inlets 913 are further disposed on the first liquid cooling flow channel 914, wherein the first liquid cooling flow channel liquid outlets 903 are communicated with the total liquid inlet 90, and the number of the first liquid cooling flow channel liquid outlets 903 and the number of the first liquid cooling flow channel liquid inlets 913 are in one-to-one correspondence. In other cases, the number of the first liquid cooling flow channel liquid outlets 903 and the first liquid cooling flow channel liquid inlets 913 is determined according to the batteries provided on the liquid cooling plate. In this embodiment, one first liquid cooling channel liquid outlet 903 corresponds to one first liquid cooling channel liquid inlet 913, the first liquid cooling channel liquid outlet 903 and the first liquid cooling channel liquid inlet 913 are both used for externally connecting other components, and cooling liquid enters the externally connected components through the first liquid cooling channel liquid outlet 903, and flows out of the components after circulating and enters the first liquid cooling channel 914 through the first liquid cooling channel liquid inlet 913.
Referring again to fig. 5, the first liquid cooling channel 914 includes a first liquid inlet channel 901 and a first liquid return channel 911. Specifically, the first liquid cooling channel liquid outlet 903 is located on a channel of the first liquid inlet 901, and the first liquid cooling channel liquid inlet 913 is located on a channel of the first liquid return channel 911. Wherein the inlet of the first liquid inlet channel 901 is communicated with the total liquid inlet 90, and the outlet is communicated with the liquid outlet 903 of the first liquid cooling channel; the inlet of the first liquid return channel 911 is communicated with the liquid inlet 913 of the first liquid cooling channel, and the outlet is communicated with the total liquid outlet 91. The second liquid-cooled runner 915 includes a second liquid-inlet runner 902 and a second liquid-return runner 912 that are in communication. The inlet of the second liquid inlet channel 902 is communicated with the total liquid inlet 90, and the outlet of the second liquid return channel 912 is communicated with the total liquid outlet 91.
Specifically, the liquid-cooling flow path in the flow path layer 9 is divided into a first liquid-cooling flow path 914 and a second liquid-cooling flow path 915. During cooling, the cooling liquid enters from the total liquid inlet 90, is split through the first liquid inlet flow channel 901 and the second liquid inlet flow channel 902, a part of the cooling liquid enters the first liquid cooling flow channel 914 from the first liquid inlet flow channel 901, the first liquid cooling flow channel 914 is split through the five liquid cooling flow channel liquid outlets 903 and is converged by the five liquid cooling flow channel liquid inlets 913, five parts are externally connected, the part of the cooling liquid circulates in the external parts and then flows out of the converged liquid to enter the first liquid return flow channel 911, and finally flows out of the total liquid outlet 91.
Another part of the cooling liquid enters the second liquid cooling flow channel 915 from the second liquid inlet flow channel 902, and the second liquid cooling flow channel 915 is also divided into different cooling areas for cooling the batteries arranged on each area. The second inlet flow channel 902 is provided with four outlets, each outlet is correspondingly connected with a cooling area, and a plurality of flow channels are arranged in each cooling area. After entering a cooling area from each outlet of the second liquid inlet channel 902, the cooling liquid is further divided into each channel in the cooling area, flows along the arrangement direction of the batteries, and then flows out and merges into the second liquid return channel 912, and flows out from the total liquid outlet 91.
The liquid cooling plate in this embodiment is arranged at the bottom of the battery pack box body, and a side liquid cooling plate 7 is arranged on the liquid cooling plate. The components of the first liquid cooling runner liquid outlet 903 and the first liquid cooling runner liquid inlet 913, which are externally connected, are the side liquid cooling plates 7, and in this embodiment, the liquid cooling plates are connected with five side liquid cooling plates 7, and an electric core is arranged between the two adjacent side liquid cooling plates 7. When the electric cores are arranged, the large surfaces of the electric cores are close to each other, and the end surface with the smallest area is abutted against the side liquid cooling plate 7. The second liquid cooling flow channel 915 is provided with electric cores, and each cooling area is positioned between the liquid cooling plates 7 on two adjacent sides and cools the bottom surface of a row of electric cores on the cooling area. The first liquid cooling flow channel 914 is communicated with the side liquid cooling plate 7, cooling liquid can be circulated in the side liquid cooling plate 7, and the side liquid cooling plate 7 is used for cooling two end faces of the electric core. The first liquid cooling flow channel 914 and the second liquid cooling flow channel 915 are separately and independently arranged, cooling liquid is conveyed into the side liquid cooling plate 7 through the first liquid cooling flow channel 914 and used for cooling the end face of the electric core, the bottom face of the electric core is cooled through the second liquid cooling flow channel 915, and the first liquid cooling flow channel 914 and the second liquid cooling flow channel 915 are not interfered with each other. And communicate through first liquid cooling runner 914 between total inlet 90 and total liquid outlet 91 and the side liquid cooling board 7, need not to adopt the pipe connection in addition, need not to reserve space for the pipeline in the battery package, only set up the hose that occupation space is little, increased the effective space in the battery package.
Example 2
The present embodiment provides a battery pack case, as shown in fig. 1 and 2, in which a liquid cooling plate in embodiment 1 is disposed in a case 1, and the liquid cooling plate is disposed at the bottom of the case 1. The device also comprises five side liquid cooling plates 7, wherein the side liquid cooling plates 7 are arranged on the liquid cooling plates at intervals. The side liquid cooling plate 7 is provided with a side plate liquid cooling flow passage, a side plate liquid cooling flow passage inlet and a side plate liquid cooling flow passage outlet which are communicated with the side plate liquid cooling flow passage; each side plate liquid cooling runner inlet is correspondingly connected with a first liquid cooling runner liquid outlet 903, and each side plate liquid cooling runner outlet is correspondingly connected with a first liquid cooling runner liquid inlet 913.
Two of the five side liquid cooling plates 7 are positioned at two side edges of the liquid cooling plate, and the other three are arranged between the two side edges of the liquid cooling plate at the same interval. The side plate liquid cooling runner inlets and the side plate liquid cooling runner outlets which are arranged on the side liquid cooling plates 7 on the two sides of the liquid cooling plates are positioned on the same side of the side liquid cooling plates 7 and are all close to one side of the inside of the box body 1. The side plate liquid cooling runner inlet and the side plate liquid cooling runner outlet which are arranged on the side liquid cooling plate 7 between the two side edges of the liquid cooling plate are positioned on the two sides of the side liquid cooling plate 7. Facilitating the distribution of the location of the hose assembly 4.
As shown in fig. 6, in order to circulate the coolant in the side liquid cooling plate 7, a side liquid cooling plate inlet flow channel 73 and a side liquid cooling plate return flow channel 74 are provided in the side liquid cooling plate 7, which are communicated, an inlet of the side liquid cooling plate inlet flow channel 73 is a side plate liquid cooling flow channel inlet, and an outlet of the side liquid cooling plate return flow channel 74 is a side plate liquid cooling flow channel outlet. The side plate liquid cooling runner inlet and the side plate liquid cooling runner outlet are positioned at the same end of the side liquid cooling plate 7, the side liquid cooling plate liquid inlet runner 73 and the side liquid cooling plate liquid return runner 74 are communicated with each other at the other end of the side liquid cooling plate 7, and a side liquid cooling plate plug 75 is arranged at the end of the side liquid cooling plate and used for plugging the end part of the side liquid cooling plate 7 to avoid leakage of cooling liquid.
After the side liquid cooling plate 7 is arranged in the box body 1, the flow passage trend of the side liquid cooling plate liquid inlet flow passage 73 and the side liquid cooling plate liquid return flow passage 74 is consistent with the flow passage trend of the second liquid cooling flow passage 915, and the side liquid cooling plate liquid inlet flow passage and the side liquid cooling plate liquid return flow passage are both laid perpendicular to the large surface of the battery cell. In addition, the side liquid cooling plate liquid inlet channel 73 is located at a side far away from the bottom of the box body 1, the side liquid cooling plate liquid return channel 74 is located at a side near the bottom of the box body 1, and cooling liquid enters from the side liquid cooling plate liquid inlet channel 73 into a side where the end face of the cooling cell is far away from the bottom of the box body 1, and when the cooling liquid flows back from the side liquid cooling plate liquid return channel 74, the end face of the cooling cell is near the bottom of the box body 1. Because the bottom of electric core is cooled by the liquid cooling board, be close to the electric core terminal surface and be close to the influence that the cooling of liquid cooling board also can be influenced by the bottom of box 1, consequently be located the side that keeps away from the bottom of box 1 with side liquid cooling board feed liquor runner 73, side liquid cooling board return liquor runner 74 is located the side that is close to the bottom of box 1, improves the uniformity of temperature when being favorable to battery cooling.
As shown in fig. 3, in this embodiment, the first liquid cooling flow channel 914 is communicated with the side liquid cooling plate 7 through the hose assembly 4, the occupied space of the hose assembly 4 is small, and the hose assembly 4 has flexibility, is convenient for positioning connection, and has lower requirement on the position accuracy of the side liquid cooling plate 7. The hose assembly 4 comprises a liquid inlet hose 40 and a liquid outlet hose 41, one end of the liquid inlet hose 40 is connected with the side plate liquid cooling runner inlet, and the other end is connected with the first liquid cooling runner liquid outlet 903; one end of the liquid outlet hose 41 is connected to the outlet of the side plate liquid cooling flow channel, and the other end is connected to the liquid inlet 913 of the first liquid cooling flow channel.
For convenience of connection, a side liquid cooling plate liquid inlet nozzle 70 is arranged at the inlet of the side liquid cooling flow channel and is communicated with the inlet of a side liquid cooling plate liquid inlet flow channel 73, and a side liquid cooling plate liquid outlet nozzle 71 is arranged at the outlet of the side liquid cooling flow channel and is communicated with the outlet of a side liquid cooling plate liquid return flow channel 74. The upper plate 5 is provided with a liquid cooling plate liquid outlet nozzle 50 and a liquid cooling plate liquid inlet nozzle 51, the liquid cooling plate liquid outlet nozzle 50 is arranged at the first liquid cooling flow passage liquid outlet 903 and communicated with the first liquid cooling flow passage liquid outlet 903, and the liquid cooling plate liquid inlet nozzle 51 is arranged at the first liquid cooling flow passage liquid inlet 913 and communicated with the first liquid cooling flow passage liquid inlet 913. Taking the liquid inlet hose 40 as an example, one end of the liquid inlet hose 40 is a liquid inlet hose outlet 401, the other end is a liquid inlet hose inlet 402, and when in connection, the liquid inlet hose outlet 401 is directly sleeved on the liquid inlet nozzle 70 of the side liquid cooling plate, and the liquid inlet hose inlet 402 is sleeved on the liquid outlet nozzle 50 of the liquid cooling plate. In this embodiment, the hose assembly 4 is assembled with the side liquid cooling plate 7 in advance, the liquid inlet hose outlet 401 and the side liquid cooling plate liquid inlet nozzle 70 are installed and sealed by cold pressing, the cold pressing can avoid damaging the hose assembly due to high temperature, and similarly, the liquid outlet hose 41 and the side liquid cooling plate liquid outlet nozzle 71 are installed and sealed by cold pressing. After the hose assembly 4 and the side liquid cooling plate 7 are assembled, the hose assembly 4 is placed on the liquid cooling plate, and the hose assembly 4 is connected with the liquid cooling plate liquid outlet nozzle 50 and the liquid cooling plate liquid inlet nozzle 51. In connection, for example, a quick connector may be provided at the inlet 402 of the liquid inlet hose, so that the liquid outlet hose can be quickly connected to the liquid outlet nozzle 50 of the liquid cooling plate, and the same is true for the liquid outlet hose 41.
In this embodiment, the box 1 includes a bottom plate and a side plate surrounding the bottom plate, and the liquid cooling plate is disposed on the bottom plate. In order to further improve the utilization rate of the internal space of the tank 1, the total liquid inlet 90 and the total liquid outlet 91 of the liquid cooling plate are extended to the outside of the side plate and the outside of the tank 1. The liquid cooling plate total connector 6 is arranged outside the box body 1, the liquid cooling plate total connector 6 comprises a total liquid inlet connector 60 and a total liquid outlet connector 61, the total liquid inlet connector 60 is communicated with a total liquid inlet 90, and the total liquid outlet connector 61 is communicated with a total liquid outlet 91. The total liquid inlet 90 and the total liquid outlet 91 are positioned at the outer side of the box body 1, so that the liquid cooling plate total joint 6 does not occupy the space inside the box body 1.
In this embodiment, the first liquid cooling flow channel 914 and the second liquid cooling flow channel 915 are separately and independently arranged, and the cooling liquid is conveyed into the side liquid cooling plate 7 through the first liquid cooling flow channel 914, so as to cool the end face of the battery cell, and the bottom face of the battery cell is cooled through the second liquid cooling flow channel 915, so that the first liquid cooling flow channel 914 and the second liquid cooling flow channel 915 do not interfere with each other, and the cooling in the side liquid cooling plate 7 and the cooling in the second liquid cooling flow channel 915 are parallel and do not interfere with each other, so that the bottom face of the battery cell and the three side faces of the end face are cooled simultaneously, the uniformity of the battery cell during cooling is improved, and the cooling effect is improved. The total liquid inlet 90 and the total liquid outlet 91 are communicated with the side liquid cooling plate 7 through the first liquid cooling flow channel 914, and the liquid cooling plate total joint 6 is positioned outside the box body, so that the pipeline arrangement is reduced in the box body, the space utilization rate in the box body is improved, and the grouping efficiency and the energy density of the battery are improved.
Example 3
The embodiment provides a battery pack, as shown in fig. 1, including a battery pack case and a battery core 2 in embodiment 2, the large faces of the battery core 2 are close to each other and are stacked between the adjacent side liquid cooling plates 7, when the battery cores 2 are arranged, the large faces of each battery core are close to each other, and the end face with the smallest area is abutted against the side liquid cooling plates 7. The cell 2 has a rectangular parallelepiped shape, in which the largest surface is its large surface. An aerogel layer 3 is arranged between the large surfaces of two adjacent electric cores 2 and is used for heat insulation between the electric cores. For better cooling of the bottom surface and the end surface of the battery cell 2, a heat conducting adhesive layer 8 is arranged on one side of the liquid cooling plate close to the battery and on the side surface of the side liquid cooling plate 7, which is in contact with the battery cell, so that better transmission of cold liquid cooling capacity can be realized.
The cooling liquid is split after entering from the total liquid inlet 90, and a part of the cooling liquid enters each side liquid cooling plate 7 through the first liquid cooling flow channel 914 to cool the two end faces of the battery cell 2; the other part of cooling liquid enters the second liquid cooling flow channel 915 to cool the bottom surface of the battery cell 2, and one side of the battery cell 2 close to the bottom plate of the box body is the bottom surface of the battery cell 2. The battery cell 2 is cooled on three sides through the liquid cooling plate at the bottom of the box body and the side liquid cooling plate 7, so that the cooling efficiency of the battery is improved, and the battery can be cooled to meet the requirements of high-power charge and discharge.
The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.
Claims (10)
1. A liquid cooling plate, characterized in that: the liquid cooling device comprises a flow channel layer (9), wherein a liquid cooling flow channel, a total liquid inlet (90) and a total liquid outlet (91) which are communicated with the liquid cooling flow channel are arranged in the flow channel layer (9), the liquid cooling flow channel further comprises a first liquid cooling flow channel (914) and a second liquid cooling flow channel (915), and inlets and outlets of the first liquid cooling flow channel (914) and the second liquid cooling flow channel (915) are respectively communicated with the total liquid inlet (90) and the total liquid outlet (91);
the first liquid cooling flow channel (914) comprises a first liquid inlet flow channel (901) and a first liquid return flow channel (911), a plurality of first liquid cooling flow channel liquid outlets (903) are formed in the first liquid inlet flow channel (901) and are used for being externally connected, and a plurality of first liquid cooling flow channel liquid inlets (913) are formed in the first liquid return flow channel (911) and are used for being externally connected; an inlet of the first liquid inlet flow channel (901) is communicated with the total liquid inlet (90), and an outlet of the first liquid inlet flow channel is communicated with the liquid outlet (903); the inlet of the first liquid return channel (911) is communicated with the liquid inlet (913) of the first liquid cooling channel, and the outlet is communicated with the total liquid outlet (91).
2. The liquid cooling plate according to claim 1, wherein: the first liquid cooling runner liquid outlets (903) are in one-to-one correspondence with the first liquid cooling runner liquid inlets (913).
3. The liquid cooling plate according to claim 1 or 2, wherein: the second liquid cooling runner (915) comprises a second liquid inlet runner (902) and a second liquid return runner (912) which are communicated together, wherein an inlet of the second liquid inlet runner (902) is communicated with the total liquid inlet (90), and an outlet of the second liquid return runner (912) is communicated with the total liquid outlet (91).
4. A battery pack case, characterized in that: a liquid cooling plate according to any one of claims 1-3, which is arranged at the bottom of the tank (1); the device also comprises a plurality of side liquid cooling plates (7), wherein the side liquid cooling plates (7) are arranged on the liquid cooling plates at intervals; the side liquid cooling plate (7) is provided with a side plate liquid cooling flow passage, a side plate liquid cooling flow passage inlet and a side plate liquid cooling flow passage outlet, wherein the side plate liquid cooling flow passage inlet and the side plate liquid cooling flow passage outlet are communicated with the side plate liquid cooling flow passage; the side plate liquid cooling runner inlet is correspondingly connected with a first liquid cooling runner liquid outlet (903), and the side plate liquid cooling runner outlet is correspondingly connected with a first liquid cooling runner liquid inlet (913).
5. The battery pack case according to claim 4, wherein: the side liquid cooling plate (7) is internally provided with a side liquid cooling plate liquid inlet flow channel (73) and a side liquid cooling plate liquid return flow channel (74) which are communicated, the inlet of the side liquid cooling plate liquid inlet flow channel (73) is a side plate liquid cooling flow channel inlet, and the outlet of the side liquid cooling plate liquid return flow channel (74) is a side plate liquid cooling flow channel outlet.
6. The battery pack case according to claim 5, wherein: the side liquid cooling plate liquid inlet flow channel (73) is located at one side far away from the bottom of the box body (1), and the side liquid cooling plate liquid return flow channel (74) is located at one side close to the bottom of the box body (1).
7. The battery pack case according to claim 5, wherein: the first liquid cooling flow channel (914) is communicated with the side liquid cooling plate (7) through a hose assembly (4), the hose assembly (4) comprises a liquid inlet hose (40) and a liquid outlet hose (41), one end of the liquid inlet hose (40) is connected with the side plate liquid cooling flow channel inlet, and the other end of the liquid inlet hose is connected with the first liquid cooling flow channel liquid outlet (903); one end of the liquid outlet hose (41) is connected with the outlet of the side plate liquid cooling runner, and the other end of the liquid outlet hose is connected with the liquid inlet (913) of the first liquid cooling runner.
8. The battery pack case according to claim 6, wherein: the flow channel trend of the side liquid cooling plate liquid inlet flow channel (73) and the side liquid cooling plate liquid return flow channel (74) is consistent with the flow channel trend of the second liquid cooling flow channel (915).
9. The battery pack case according to claim 8, wherein: the box body (1) comprises a bottom plate and side plates surrounding the bottom plate, and the total liquid inlet (90) and the total liquid outlet (91) are positioned on the outer sides of the side plates.
10. A battery pack, characterized in that: the battery pack box body comprises the battery pack box body according to any one of claims 4-9, and further comprises electric cores (2), wherein large surfaces of the electric cores (2) are close to each other and are stacked between adjacent side liquid cooling plates (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322268462.9U CN220585316U (en) | 2023-08-22 | 2023-08-22 | Liquid cooling plate, battery pack box and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322268462.9U CN220585316U (en) | 2023-08-22 | 2023-08-22 | Liquid cooling plate, battery pack box and battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN220585316U true CN220585316U (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322268462.9U Active CN220585316U (en) | 2023-08-22 | 2023-08-22 | Liquid cooling plate, battery pack box and battery pack |
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| Country | Link |
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| CN (1) | CN220585316U (en) |
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2023
- 2023-08-22 CN CN202322268462.9U patent/CN220585316U/en active Active
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