CN217009318U - Battery package cooling structure and battery package - Google Patents
Battery package cooling structure and battery package Download PDFInfo
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- CN217009318U CN217009318U CN202123435162.2U CN202123435162U CN217009318U CN 217009318 U CN217009318 U CN 217009318U CN 202123435162 U CN202123435162 U CN 202123435162U CN 217009318 U CN217009318 U CN 217009318U
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Abstract
The utility model provides a battery pack cooling structure and a battery pack, wherein the battery pack cooling structure comprises: the side liquid cooling plate is arranged on at least one side of the width direction of the electric core assembly, and a first liquid inlet and a first liquid outlet are formed in the side surface, facing the electric core assembly, of the side liquid cooling plate; the liquid inlet pipe is connected with the first liquid inlet of at least one side liquid cooling plate; a drain pipe connected to the first liquid outlet of at least one of the side liquid-cooling plates. According to the embodiment of the utility model, the cooling of the side face with larger area of the electric core group can be realized through the side liquid cooling plate, the cooling efficiency is improved, and the heat dissipation requirement under the condition of quick charging can be met.
Description
Technical Field
The utility model relates to the technical field of battery pack cooling, in particular to a battery pack cooling structure and a battery pack.
Background
At present, the requirements for the working condition temperature range of the battery pack and the temperature difference control between the battery cell groups become higher due to the pursuit of meeting the requirements of customers for quick charging, prolonging the service life and increasing the full-electricity driving mileage. In addition, safety is also critical in meeting the basic functions. Therefore, the temperature control design requirement of the battery pack is also increased. On the premise of ensuring the mechanical strength and meeting the requirements of various mechanical properties, the cooling efficiency is improved, and the industrial trend is to achieve the purposes of quick charging and discharging of the battery pack and safety of temperature control.
The multiplying power that charges of charging battery soon is about 2C in the existing market, and the cooling to the electric core group is mainly the single face cooling, and cooling area is little, and when charging in the face of higher multiplying power, the heat production of electric core group can increase by multiples, and traditional electric core group bottom surface cooling has hardly satisfied its heat dissipation demand.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a battery pack cooling structure to solve the technical problem that cooling of an electric core group during rapid charging in the prior art is difficult to meet the heat dissipation requirement.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a battery pack cooling structure applied to a battery pack including a plurality of electric core groups, comprising:
the side liquid cooling plate is arranged on at least one side of the width direction of the electric core assembly, and a first liquid inlet and a first liquid outlet are formed in the side surface, facing the electric core assembly, of the side liquid cooling plate;
the liquid inlet pipe is connected with the first liquid inlet of at least one side liquid cooling plate;
a drain pipe connected to the first liquid outlet of at least one of the side liquid-cooling plates.
Furthermore, the liquid cooling plate unit further comprises a liquid cooling plate, at least one liquid cooling plate is arranged on the bottom surface of the plurality of electric core sets, a liquid cooling plate liquid inlet and a liquid cooling plate liquid outlet are formed in two sides of the length direction of the upper surface of the liquid cooling plate, and the liquid inlet pipe is connected with the liquid cooling plate liquid inlet.
Furthermore, the first liquid inlet and the first liquid outlet are respectively located on two sides of the side liquid cooling plate in the length direction, and the first liquid inlet and the liquid inlet of the lower liquid cooling plate are located on the same side.
Furthermore, the side liquid cooling plates are arranged on two side faces of the electric core assembly in the width direction, the side liquid cooling plates on two sides of the electric core assembly form a side liquid cooling plate group, the first liquid inlets in the side liquid cooling plate group are first liquid inlet groups, and the first liquid outlets in the side liquid cooling plate group are first liquid outlet groups.
Furthermore, a plurality of the side liquid cooling plate groups are arranged in multiple rows and multiple columns, the column direction is parallel to the length direction of the side liquid cooling plates, and the side liquid cooling plate groups in the same column are sequentially connected through the connecting liquid cooling pipes to form a series structure.
Furthermore, first inlet with all be connected with the first joint of L type on the first liquid outlet, it is the structure that both ends are buckled downwards to connect the liquid cooling pipe, the fillet structure is established to the department of buckling, it is same adjacent two in the row in the side liquid cooling board group, one of them one side in the side liquid cooling board group first liquid outlet and another on the side liquid cooling board group with one side on the side liquid cooling board first inlet all pass through first joint with it links to each other to connect the liquid cooling pipe.
Further, still include total liquid inlet joint, total liquid inlet joint with the feed liquor pipe is linked together, the feed liquor pipe is connected with first liquid cooling pipe and second liquid cooling pipe through the second joint, first liquid cooling pipe with second liquid cooling pipe is a plurality of in first line side liquid cooling board group first inlet group links to each other, second liquid cooling pipe still with lower liquid cooling board inlet links to each other, first liquid cooling pipe orientation is kept away from the one end downward sloping of second joint, first liquid cooling pipe with second liquid cooling pipe for the height of side liquid cooling board group bottom surface all is greater than first inlet for the height of side liquid cooling board group bottom surface.
Further, the liquid cooling device further comprises a total liquid outlet joint, wherein the total liquid outlet joint is communicated with the liquid outlet pipe, the liquid outlet pipe is respectively connected with the first liquid outlet groups of the plurality of side liquid cooling plate groups in the last row, and the liquid outlet pipe is further connected with the liquid outlet of the lower liquid cooling plate.
Due to the adoption of the technical scheme, the battery pack cooling structure has the following beneficial effects:
in the embodiment of the utility model, the side liquid cooling plate arranged on at least one side of the width direction of the electric core group can cool the side face with larger area of the electric core group, thereby improving the cooling efficiency and meeting the heat dissipation requirement under the condition of quick charging; the liquid inlet pipe is connected with the first liquid inlet, namely, the liquid inlet pipe can directly divide the cold liquid into the side liquid cooling plates, so that the cooling effect on the electric core assembly is further improved; and through locating first inlet and first liquid outlet on the side of side liquid cooling board towards the electric core group, avoided locating the inlet or the liquid outlet and having avoided the side liquid cooling board thickness that arouses on the both sides face of side liquid cooling board length direction too thick, improved space integration utilization ratio.
Another objective of the present invention is to provide a battery pack to solve the technical problem that the cooling of the electric core assembly during rapid charging is difficult to meet the heat dissipation requirement.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
a battery pack comprises a lower box body, a plurality of electric core groups and the battery pack cooling structure.
Furthermore, the lower liquid cooling plate is arranged at the bottom of the lower box body, a total liquid inlet and a total liquid outlet are arranged on the side wall of the lower box body, a total liquid inlet joint and a total liquid outlet joint are respectively arranged on the total liquid inlet and the total liquid outlet, and the liquid outlet pipe is arranged in the lower box body.
The battery pack has the same beneficial effects as the battery pack cooling structure, and the details are not repeated.
Drawings
Fig. 1 is an overall schematic view of a battery pack cooling structure according to an embodiment of the present invention;
fig. 2 is a schematic view of a side liquid cooling plate set of a battery pack cooling structure according to an embodiment of the utility model;
fig. 3 is a partial schematic view of a cooling structure of a battery pack according to an embodiment of the utility model;
fig. 4 is a partial schematic view of a battery pack cooling structure according to an embodiment of the utility model;
fig. 5 is a schematic view of a lower liquid cooling plate of a battery pack cooling structure according to an embodiment of the utility model;
fig. 6 is a schematic view of a lower case of a battery pack according to an embodiment of the utility model.
The labels in the figure are:
100. a total liquid outlet joint; 200. the liquid cooling system comprises a total liquid inlet joint, 201, a liquid inlet pipe, 202, a first liquid cooling pipe, 203, a second liquid cooling pipe, 204, a third liquid cooling pipe, 205, a connecting liquid cooling pipe, 206, a fourth liquid cooling pipe, 207, a fifth liquid cooling pipe, 208, a liquid outlet pipe, 300, a liquid cooling plate, 301, a liquid cooling plate inlet, 302, a liquid cooling plate outlet, 400, a lower box body, 401, a cross beam, 402, a longitudinal beam, 500, a single module, 501, a side liquid cooling plate, 502, a first joint, 503, a core group, 5001, a first module, 5002, a second module, 5003, a third module, 5004, a fourth module, 5005, a fifth module, 5006, a sixth module, 5007, a seventh module, 5008 and an eighth module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, there is shown an overall schematic view of a cooling structure of a battery pack in an embodiment of the present invention; referring to fig. 2, a schematic diagram of a side liquid cooling plate set of a battery pack cooling structure according to an embodiment of the present invention is shown; referring to fig. 3, a partial schematic view i of a cooling structure of a battery pack according to an embodiment of the present invention is shown; as shown in fig. 1, fig. 2 and fig. 3, the cooling structure for a battery pack according to the embodiment of the present invention is applied to a battery pack including a plurality of electric core groups 503, and may specifically include: the side liquid cooling plate 501 is arranged on at least one side of the width direction of the electric core assembly 503, and a first liquid inlet and a first liquid outlet are formed in the side surface, facing the electric core assembly 503, of the side liquid cooling plate 501; the liquid inlet pipe 201, the liquid inlet pipe 201 is connected with a first liquid inlet of at least one side liquid cooling plate 501; an outlet pipe 208, wherein the outlet pipe 208 is connected to a first outlet of at least one of the side liquid-cooling plates 501.
In the embodiment of the utility model, the side liquid cooling plate 501 arranged on at least one side of the width direction of the electric core group 503 can cool the side face with larger area of the electric core group 503, so that the cooling efficiency is improved, and the heat dissipation requirement under the condition of quick charging can be met; the liquid inlet pipe 201 is connected with a first liquid inlet of at least one side liquid cooling plate 501, namely, the liquid inlet pipe 201 can divide cold liquid into the side liquid cooling plates 501, so that the cooling effect on the electric core assembly 503 is further improved; and through locating first inlet and first liquid outlet on the side of side liquid cooling board towards the electric core group, avoided locating the inlet or the liquid outlet and having avoided the side liquid cooling board thickness that arouses on the both sides face of side liquid cooling board length direction too thick, improved space integration utilization.
Optionally, referring to fig. 5, a lower liquid-cooled plate of a battery pack cooling structure according to an embodiment of the present invention is shown. The battery pack cooling structure provided by the embodiment of the utility model further comprises a lower liquid cooling plate 300, wherein at least one lower liquid cooling plate 300 is positioned on the bottom surface of the plurality of electric core groups 503, a lower liquid cooling plate liquid inlet 301 and a lower liquid cooling plate liquid outlet 302 are arranged on two sides of the upper surface of the lower liquid cooling plate 300 in the length direction, and the liquid inlet pipe 201 is connected with the lower liquid cooling plate liquid inlet 301. Through side liquid cold plate 501 with be used for cooling a plurality of the big liquid cold plate 300 of electric core 503's bottom surface can realize the cooling when the great side of area of electric core 503 and bottom surface, has improved cooling efficiency, can satisfy the heat dissipation demand under the quick charge condition. And can shunt cold liquid to side liquid cold plate 501 and big liquid cold plate 300 in through feed liquor pipe 201, further improved the cooling effect to electric core 503.
Further, there is one lower liquid-cooling plate 300, the lower liquid-cooling plate 300 is located on the bottom surface of the plurality of electric core groups 503, and the lower liquid-cooling plate 300 has a fluid channel, and the fluid channel is communicated with both the lower liquid-cooling plate liquid inlet 301 and the lower liquid-cooling plate liquid outlet 302. Specifically, the lower liquid cooling plate 300 is located at the bottom surfaces of the eight electric core groups 503. Alternatively, two lower liquid-cooling plates 300 may be provided, one lower liquid-cooling plate 300 is located on the bottom surfaces of four electric core groups 503, and the other lower liquid-cooling plate 300 is located on the bottom surfaces of the other four electric core groups 503. The lower liquid cooling plate 300 can cool the bottom surfaces of the plurality of electric core groups 503, so that the cooling effect and the cooling efficiency are improved. Optionally, the lower liquid cooling plate 300 is a stamped liquid cooling plate, and has the advantages of freely designable flow channel, large contact area, good heat exchange effect, high production efficiency, good pressure resistance and strength, and the like. Optionally, the fluid channel is provided with at least one path, and when the fluid channel is provided with one path, the cold liquid flow channel may be a folded structure; when the fluid channel is provided with multiple channels, the multiple channels of fluid channels can be in a mutually parallel structure.
Optionally, the first liquid inlet and the first liquid outlet are located on two sides of the side liquid cooling plate 501 in the length direction, the length direction of the side liquid cooling plate 501 is parallel to the length direction of the lower liquid cooling plate 300, and the first liquid inlet and the lower liquid cooling plate liquid inlet 301 are located on the same side. Specifically, the length direction of the side liquid cooling plate 501 is parallel to the length direction of the electric core group 503, the length direction of the side liquid cooling plate 501 is parallel to the length direction of the lower liquid cooling plate 300, the length of the side liquid cooling plate 501 is greater than the length of the electric core group 503, and the electric core group 503 is formed by arranging a plurality of electric cores. The first exit port is located on the same side as the lower liquid cold plate exit port 302. When cold liquid gets into the electric core group 503 cooling from first inlet and liquid cold drawing inlet 301 down promptly, the whole flow direction of cold liquid in side liquid cold plate 501 and liquid cold plate 300 down is unanimous, all is from the liquid outlet of the inlet flow direction opposite side with one side, has further improved the cooling effect to electric core group 503.
Optionally, the side liquid cooling plates 501 are arranged on two side faces of the electric core assembly 503 in the width direction, two side liquid cooling plates 501 on two sides of the electric core assembly 503 form a side liquid cooling plate assembly, two first liquid inlets in the side liquid cooling plate assembly are first liquid inlet groups, and two first liquid outlets in the side liquid cooling plate assembly are first liquid outlet groups. Specifically, the width direction of the electric core assembly 503 is the Y direction shown in fig. 1, the side liquid cooling plates 501 are adhered to two side surfaces of the electric core assembly 503 in the width direction, the two side surfaces of the electric core assembly 503 in the width direction are two side surfaces with a larger area in the electric core assembly 503, and the two side liquid cooling plates 501 are used for cooling the two side surfaces of the electric core assembly 503 in the width direction. The side liquid cooling plate 501 is provided with a heat conducting medium facing one side of the electric core assembly 503, at least one path of cold liquid flow channel is arranged in the side liquid cooling plate 501, and the cold liquid flow channel is communicated with the first liquid inlet and the first liquid outlet.
For example, when one path of cold liquid flow channel is arranged in the side liquid cooling plate 501, the cold liquid flow channel may be a straight line structure from the first liquid inlet to the first liquid outlet, or may be a folded structure, or the like; when multiple paths of cold liquid flow channels are arranged in the side liquid cooling plate 501, the multiple paths of cold liquid flow channels can be parallel to each other. The first liquid inlet group is two first liquid inlets on two side liquid cooling plates 501 in the side liquid cooling plate group, and the first liquid outlet group is two first liquid outlets on two side liquid cooling plates 501 in the side liquid cooling plate group. Through locating side liquid cooling plate 501 the both sides of electric core group 503 width direction can cool off the great both sides face of area and the bottom surface of electric core group 503 simultaneously when electric core group 503 cools off, has improved electric core group 503's cooling effect and cooling efficiency, the heat dissipation demand when having satisfied quick charge.
Optionally, a plurality of the side liquid cooling plate groups are arranged in multiple rows and multiple columns, the column direction is parallel to the length direction of the side liquid cooling plate 501, and the same plurality of the side liquid cooling plate groups in the column are sequentially connected through the connecting liquid cooling pipe 205 to form a series structure. Specifically, as shown in fig. 1, the side liquid cooling plate sets are 8 in total, are arranged in two rows and four columns, and the corresponding electric core sets 503 are 8 in the same manner, are arranged in two rows and four columns, and the single electric core set 503, the side liquid cooling plate sets and the plurality of first connectors 502 connected to the side liquid cooling plate sets jointly form the single module 500.
The eight single modules 500 are sequentially a first module 5001, a second module 5002, a third module 5003, a fourth module 5004, a fifth module 5005, a sixth module 5006, a seventh module 5007 and an eighth module 5008, the corresponding side liquid cooling plate groups in the eight single modules 500 are respectively a first side liquid cooling plate group, a second side liquid cooling plate group, a third side liquid cooling plate group, a fourth side liquid cooling plate group, a fifth side liquid cooling plate group, a sixth side liquid cooling plate group, a seventh side liquid cooling plate group and an eighth side liquid cooling plate group, the first side liquid cooling plate group and the second side liquid cooling plate group are located in a first row, the third side liquid cooling plate group and the fourth side liquid cooling plate group are located in a second row, the fifth side liquid cooling plate group and the sixth side liquid cooling plate group are located in a third row, and the seventh side liquid cooling plate group and the eighth side liquid cooling plate group are located in a fourth row. The first side liquid cooling plate group, the second side liquid cooling plate group, the third side liquid cooling plate group and the fourth side liquid cooling plate group are located in a first row, and the fifth side liquid cooling plate group, the sixth side liquid cooling plate group, the seventh side liquid cooling plate group and the eighth side liquid cooling plate group are located in a second row. The two side liquid plate sets in each column are connected in series, and are connected in parallel with each other, and are also connected in parallel with the lower liquid cooling plate 300, that is, the two side liquid plate sets in each column have a longer cold liquid flow channel in the length direction (i.e., X direction) of the side liquid plate 501. Through the series connection and parallel connection, the cold liquid flow direction is mutually parallel when the cold liquid is divided to each row, the complexity of the water path and the temperature equalizing requirement of the electric core group 503 are considered, and the cooling effect and the cooling efficiency of the electric core groups 503 are improved.
It is same two in the row side liquid cooling plate group connects gradually for series connection, for example first side liquid cooling plate group and second side liquid cooling plate group connect gradually for series connection. Through the same a plurality of side liquid cooling plate group connects gradually for the series connection structure in the row, has avoided every side liquid cooling plate group all need link to each other with total intaking, has simplified the pipeline structure, make full use of the space.
Optionally, the first liquid inlet and the first liquid outlet are connected with a first joint 502 of an L-shaped structure, the connecting liquid cooling pipe 205 is of a structure with two ends bent downwards, a round corner structure is arranged at the bent part, and the round corner structure is the same in two adjacent side liquid cooling plate sets in the row, one of the two side liquid cooling plate sets is arranged on one side in the side liquid cooling plate set, the first liquid outlet interface and the other side liquid cooling plate set are arranged on the same side of the side liquid cooling plate 501, and the first liquid inlet interface is connected with the connecting liquid cooling pipe 205 through the first joint 502. Specifically, the first liquid inlet and the first liquid outlet of each side liquid cooling plate 501 are both connected with an L-shaped first joint 502, only two side liquid cooling plate sets are arranged in the same row, and the two adjacent side liquid cooling plate sets, the first liquid outlet group of one of the side liquid cooling plate groups is adjacent to the first liquid inlet group of the other side liquid cooling plate group, the two are connected through a connecting liquid cooling pipe 205, for example, the two first liquid outlets on the two side liquid cooling plates 501 in the seventh side liquid cooling plate set are respectively connected with the two first liquid inlets on the two side liquid cooling plates 501 in the eighth side liquid cooling plate set through the connecting liquid cooling pipe 205, that is, the first liquid outlet on the side liquid-cooling plate 501 on one side in the seventh side liquid-cooling plate group is connected with the first joint 502 on the first liquid inlet on the side liquid-cooling plate 501 on the same side in the eighth side liquid-cooling plate group through the first joint 502 and the connecting liquid-cooling pipe 205. The same series structure of a plurality of side liquid cooling plate groups in the row and the same series structure of a plurality of side liquid cooling plate groups 501 on the same side in the row can be realized by connecting the liquid cooling pipes 205, so that the pipeline structure is simplified, and the space is fully utilized. The connecting liquid cooling pipe 205 can be detached from the space between the two first joints 502 for cleaning, and the round corner structure at the bent part of the connecting liquid cooling pipe 205 can prevent the cold liquid from flowing unsmoothly at the connecting liquid cooling pipe 205.
Optionally, battery package cooling structure still includes total liquid inlet joint 200, total liquid inlet joint 200 is linked together with feed liquor pipe 201, feed liquor pipe 201 has first liquid-cooled tube 202 and second liquid-cooled tube 203 through second articulate, first liquid-cooled tube 202 with second liquid-cooled tube 203 and a plurality of in first line the side liquid-cooled plate group first inlet group links to each other, second liquid-cooled tube 203 still links to each other with lower liquid-cooled plate inlet 301, first liquid-cooled tube 202 inclines downwards towards the one end of keeping away from the second and connecting, first liquid-cooled tube 202 with second liquid-cooled tube 203 for the height of side liquid-cooled plate group bottom surface all is greater than first inlet for the height of side liquid-cooled plate group bottom surface. Specifically, the total liquid inlet joint 200 may be made into different lengths and different diameters according to actual needs, the cold liquid flows in from the total liquid inlet joint 200, and the first liquid-cooling pipe 202 and the second liquid-cooling pipe 203 are connected to the first liquid inlet group of the plurality of side liquid-cooling plate groups in the first row through the first joint 502. The second liquid cooling pipe 203 is connected with the lower liquid cooling plate liquid inlet 301 through a vertical third liquid cooling pipe 204, the second liquid cooling pipe 203 is further connected with a first liquid inlet group of the side liquid cooling plate group (namely, the first side liquid cooling plate group) close to the lower liquid cooling plate liquid inlet 301 through a first connector 502, and the second liquid cooling pipe 203 is further connected with a first liquid inlet of a side liquid cooling plate 501 in the third side liquid cooling plate group through a first connector 502. That is, the first liquid-cooling pipe 202 can realize that the cold liquid flows to one side liquid-cooling plate 501 in the lower liquid-cooling plate 300, the first side liquid-cooling plate group and the third side liquid-cooling plate group.
The first liquid cooling pipe 202 is connected with a first liquid inlet group of the fifth side liquid cooling plate group and a first liquid inlet group of the seventh side liquid cooling plate group through a first connector 502, and the first liquid cooling pipe 202 is further connected with a first liquid inlet of another side liquid cooling plate 501 in the third side liquid cooling plate group through the first connector 502. That is, the first liquid cooling pipe 202 can realize that the cold liquid flows to the fifth side liquid cooling plate group, the seventh side liquid cooling plate group and the other side liquid cooling plate 501 in the third side liquid cooling plate group. Cold liquid is shunted through feed liquor pipe 201 after getting into from total inlet joint 200, flows to first liquid cooling pipe 202 and second liquid cooling pipe 203 respectively, and rethread second liquid cooling pipe 203 shunts to liquid cooling plate 300 down, a side liquid cooling plate 501 in first side liquid cooling plate group and the third side liquid cooling plate group, and rethread first liquid cooling pipe 202 shunts to another side liquid cooling plate 501 in fifth side liquid cooling plate group, seventh side liquid cooling plate group and the third side liquid cooling plate group respectively. Can realize a plurality of with cold liquid reposition of redundant personnel to first in line through total liquid inlet joint 200 and feed liquor pipe 201 the side liquid cooling plate group with lower liquid cooling plate 300 has improved the cooling effect. Because the length of the first liquid-cooling tube 202 is greater than the length of the second liquid-cooling tube 203 in this embodiment, the design of inclining the first liquid-cooling tube 202 can ensure that the cooling liquid is distributed to the plurality of side liquid-cooling plate groups in the first row as simultaneously as possible.
Optionally, referring to fig. 4, fig. 4 is a partial schematic view illustrating a second battery pack cooling structure in the embodiment of the present invention. As shown in fig. 4, the battery pack cooling structure further includes a total liquid outlet connector 100, the total liquid outlet connector 100 is communicated with a liquid outlet pipe 208, the liquid outlet pipe 208 is respectively connected to a first liquid outlet group of the plurality of side liquid cooling plate groups in the last row, and the liquid outlet pipe 208 is further connected to the lower liquid cooling plate outlet 302. Specifically, the total liquid outlet joint 100 may be made into different lengths and different diameters according to actual needs, the liquid outlet pipe 208 is connected with the fourth liquid cooling pipe 206, the fourth liquid cooling pipe 206 is connected with the vertical fifth liquid cooling pipe 207, the fifth liquid cooling pipe 207 is connected with the lower liquid cooling plate liquid outlet 302, the fourth liquid cooling pipe 206 is connected with the four side liquid cooling plate groups in the last row through the eight first joints 502, that is, the fourth liquid cooling pipe 206 is connected with the second side liquid cooling plate group, the fourth side liquid cooling plate group, the sixth side liquid cooling plate group and the first liquid outlet of the eighth side liquid cooling plate group.
As an example, one of the loops of the cold liquid is: after entering from the general liquid inlet joint 200, the cold liquid is split by the liquid inlet pipe 201, flows to the second liquid cooling pipe 203, flows to the lower liquid cooling plate 300, flows out from the lower liquid cooling plate liquid outlet 302 to the fifth liquid cooling pipe 207, and finally flows into the liquid outlet pipe 208 and flows out from the general liquid outlet joint 100. The other loops of the cold liquid are as follows: after entering from the total liquid inlet joint 200, the cold liquid is split by the liquid inlet pipe 201, flows to the first liquid cooling pipe 202, flows to the fifth side liquid cooling plate group, flows to the sixth side liquid cooling plate group by the connecting liquid cooling pipe 205, flows out from the first liquid outlet of the sixth side liquid cooling plate group to the fourth liquid cooling pipe 206, and finally flows into the liquid outlet pipe 208 and flows out from the total liquid outlet joint 100. The cold liquid can flow back through the main liquid outlet joint 100 and the liquid outlet pipe 208.
The utility model also provides a battery pack which comprises a lower box body 400, a plurality of electric core groups 503 and the battery pack cooling structure. The specific structural form and the operation principle of the battery pack cooling structure have been described in detail in the foregoing embodiments, and are not described herein again. The battery pack has the same beneficial effects as the battery pack cooling structure, and the details are not repeated.
Optionally, the lower liquid-cooling plate 300 is disposed at the bottom of the lower box 400, a total liquid inlet and a total liquid outlet are disposed on a side wall of the lower box 400, the total liquid inlet connector 200 and the total liquid outlet connector 100 are disposed on the total liquid inlet and the total liquid outlet, respectively, and the liquid outlet pipe 208 is disposed in the lower box 400. Through box 400 down can realize a plurality of electric core group 503 with battery package cooling structure's arrangement is integrated, and drain pipe 208 establishes can realize in box 400 down that drain pipe 208 is fixed, avoids appearing the leakage of cold liquid.
Specifically, referring to fig. 6, a schematic diagram of a lower box body of a battery pack in an embodiment of the present invention is shown, and as shown in fig. 6, the lower liquid cooling plate 300 includes a cross beam 401 and a longitudinal beam 402, the cross beam 401 and the longitudinal beam 402 are detachably connected to the lower box body 400, the cross beam 401 and the longitudinal beam 402 are perpendicular to each other, the cross beam 401 and the longitudinal beam 402 divide the lower box body 400 into four cavities, and two single modules 500 are arranged in each cavity. The connecting liquid cooling pipe 205 is of a structure with two ends bent downwards, the connecting liquid cooling pipe 205 crosses over the cross beam 401 to connect the same first liquid outlet group and the first liquid inlet group which are positioned in different adjacent side liquid cooling plate groups in the row, and the space in the battery pack is fully utilized. In summary, the battery pack of the present invention combines the space utilization in the battery pack and the cooling effect of the electric core assembly 503.
The single module 500 is detachably coupled in the lower case 400. The lower liquid cooling plate 300 may be integrated with the lower box 400, or may be welded or bolted to the bottom of the lower box 400, and the lower liquid cooling plate 300 is located below the cross beam 401 and the longitudinal beam 402.
The embodiments in the present specification are all described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same and similar between the embodiments may be referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the utility model.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or terminal equipment comprising the element.
The above detailed description of the battery pack cooling structure and the battery pack provided by the present invention, and the specific examples applied herein have been provided to explain the principle and the embodiments of the present invention, and the above descriptions of the examples are only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A battery pack cooling structure applied to a battery pack including a plurality of electric core groups, comprising:
the side liquid cooling plate is arranged on at least one side of the width direction of the electric core assembly, and a first liquid inlet and a first liquid outlet are formed in the side surface, facing the electric core assembly, of the side liquid cooling plate;
the liquid inlet pipe is connected with the first liquid inlet of at least one side liquid cooling plate;
a drain pipe connected to the first liquid outlet of at least one of the side liquid-cooling plates.
2. The battery pack cooling structure according to claim 1, further comprising a lower liquid cooling plate, wherein at least one lower liquid cooling plate is located on the bottom surface of the plurality of battery packs, a lower liquid cooling plate liquid inlet and a lower liquid cooling plate liquid outlet are arranged on two sides of the upper surface of the lower liquid cooling plate in the length direction, and the liquid inlet pipe is connected with the lower liquid cooling plate liquid inlet.
3. The battery pack cooling structure according to claim 2, wherein the first liquid inlet and the first liquid outlet are located on both sides of the side liquid cooling plate in the length direction, and the first liquid inlet and the lower liquid cooling plate are located on the same side.
4. The battery pack cooling structure according to claim 2, wherein the side liquid cooling plates are disposed on two side surfaces of the electric core assembly in the width direction, two side liquid cooling plates on two sides of the electric core assembly form a side liquid cooling plate group, two first liquid inlets in the side liquid cooling plate group are first liquid inlet groups, and two first liquid outlets in the side liquid cooling plate group are first liquid outlet groups.
5. The battery pack cooling structure according to claim 4, wherein the plurality of side liquid cooling plate groups are arranged in a plurality of rows and columns, the direction of the columns is parallel to the length direction of the side liquid cooling plates, and the plurality of side liquid cooling plate groups in the same column are sequentially connected through the connecting liquid cooling pipes to form a series structure.
6. The battery pack cooling structure according to claim 5, wherein the first inlet and the first outlet are both connected with an L-shaped first joint, the connecting liquid cooling pipe is of a structure with two ends bent downwards, the bent part is provided with a fillet structure, and in two adjacent side liquid cooling plate groups in the same row, the first outlet on the side liquid cooling plate on one side in one of the side liquid cooling plate groups and the first inlet on the side liquid cooling plate on the same side in the other side liquid cooling plate group are both connected with the connecting liquid cooling pipe through the first joint.
7. The battery pack cooling structure of claim 5, further comprising a total liquid inlet joint, the total liquid inlet joint being in communication with the liquid inlet pipe, the liquid inlet pipe being connected to a first liquid-cooled pipe and a second liquid-cooled pipe through a second joint, the first liquid-cooled pipe and the second liquid-cooled pipe being connected to the first liquid inlet group of the plurality of side liquid-cooled plate groups in a first row, the second liquid-cooled pipe being further connected to the liquid inlet of the lower liquid-cooled plate, the first liquid-cooled pipe being inclined downward toward an end away from the second joint, the first liquid-cooled pipe and the second liquid-cooled pipe both having a height relative to the bottom surfaces of the side liquid-cooled plate groups that is greater than a height of the first liquid inlet relative to the bottom surfaces of the side liquid-cooled plate groups.
8. The battery pack cooling arrangement of claim 5, further comprising a total liquid outlet connector in communication with the liquid outlet tubes, the liquid outlet tubes being respectively connected to the first liquid outlet set of the plurality of side liquid cooling plate sets in the last row, the liquid outlet tubes being further connected to the lower liquid cooling plate outlets.
9. A battery pack, comprising a lower case, a plurality of electric core groups, and the battery pack cooling structure according to any one of claims 1 to 8.
10. The battery pack of claim 9, wherein the lower liquid cooling plate is disposed at the bottom of the lower box, a total liquid inlet and a total liquid outlet are disposed on a side wall of the lower box, the total liquid inlet connector and the total liquid outlet connector are disposed on the total liquid inlet and the total liquid outlet, respectively, and the liquid outlet pipe is disposed in the lower box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123435162.2U CN217009318U (en) | 2021-12-30 | 2021-12-30 | Battery package cooling structure and battery package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123435162.2U CN217009318U (en) | 2021-12-30 | 2021-12-30 | Battery package cooling structure and battery package |
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| Publication Number | Publication Date |
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| CN217009318U true CN217009318U (en) | 2022-07-19 |
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|---|---|---|---|
| CN202123435162.2U Active CN217009318U (en) | 2021-12-30 | 2021-12-30 | Battery package cooling structure and battery package |
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| CN (1) | CN217009318U (en) |
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2021
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