CN222883641U - Cooling system for bottom liquid cooling and side liquid cooling of lithium ion power battery - Google Patents
Cooling system for bottom liquid cooling and side liquid cooling of lithium ion power battery Download PDFInfo
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- CN222883641U CN222883641U CN202421635864.6U CN202421635864U CN222883641U CN 222883641 U CN222883641 U CN 222883641U CN 202421635864 U CN202421635864 U CN 202421635864U CN 222883641 U CN222883641 U CN 222883641U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
本实用新型公开一种锂离子动力电池用底部液冷及侧面液冷的冷却系统，属于冷却技术领域，包括底部双层液冷板，底部双层液冷板内部设置有上层液冷腔和下层液冷腔，下层液冷腔上开设有第一进液口，下层液冷腔与上层液冷腔连通，上层液冷腔上开设有第一出液口，上层液冷腔的外壁用于与若干电池的底部接触；上层液冷腔的外壁上设置有若干侧面液冷板，若干电池与若干侧面液冷板间隔设置，相邻两侧面液冷板分别与电池的两侧壁接触，侧面液冷板的底部固接并连通有进流导管，进流导管贯穿上层液冷腔并伸入下层液冷腔内，侧面液冷板上设置有出液组件。本实用新型可对电池底部与侧面同时散热，提高散热效果和散热效率。
The utility model discloses a bottom liquid cooling and side liquid cooling cooling system for lithium-ion power batteries, belonging to the field of cooling technology, including a bottom double-layer liquid cooling plate, an upper liquid cooling cavity and a lower liquid cooling cavity are arranged inside the bottom double-layer liquid cooling plate, a first liquid inlet is provided on the lower liquid cooling cavity, the lower liquid cooling cavity is connected with the upper liquid cooling cavity, a first liquid outlet is provided on the upper liquid cooling cavity, and the outer wall of the upper liquid cooling cavity is used to contact the bottom of a plurality of batteries; a plurality of side liquid cooling plates are arranged on the outer wall of the upper liquid cooling cavity, a plurality of batteries are arranged with a plurality of side liquid cooling plates at intervals, and two adjacent side liquid cooling plates are respectively in contact with the two side walls of the battery, the bottom of the side liquid cooling plate is fixedly connected and connected with an inlet conduit, the inlet conduit passes through the upper liquid cooling cavity and extends into the lower liquid cooling cavity, and a liquid outlet assembly is arranged on the side liquid cooling plate. The utility model can dissipate heat from the bottom and side of the battery at the same time, thereby improving the heat dissipation effect and heat dissipation efficiency.
Description
Technical Field
The utility model relates to the technical field of cooling, in particular to a bottom liquid cooling and side liquid cooling system for a lithium ion power battery.
Background
In the working process of the lithium ion power battery, a proper temperature interval is important to the performance of the battery. When the battery works in a high-temperature environment, the activity of chemical substances in the battery is increased, a large amount of heat is generated by chemical reaction, the heat in the battery is quickly accumulated in the battery without losing, and thermal runaway is easy to occur to generate safety accidents. Because the space of the battery pack is limited, the heat dissipation space of the battery is reduced, and therefore, a liquid cooling mode is generally adopted to dissipate heat of the battery in the battery pack at present.
The cooling system in the conventional battery pack usually adopts a liquid cooling plate mode with a single bottom, the flow channel is single, and the heat of the side surface of the battery cannot be effectively dissipated in time, so that the local temperature of the battery is increased, the service performance and the capacity attenuation rate of each battery monomer in the battery module are inconsistent, and the overall performance of the battery is affected.
Therefore, a cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery is provided.
Disclosure of utility model
The utility model aims to provide a cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery, which aims to solve or improve at least one of the technical problems.
The utility model provides a cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery, which comprises a bottom double-layer liquid cooling plate, wherein an upper liquid cooling cavity and a lower liquid cooling cavity are arranged in the bottom double-layer liquid cooling plate, a first liquid inlet is formed in the lower liquid cooling cavity, the lower liquid cooling cavity is communicated with the upper liquid cooling cavity, a first liquid outlet is formed in the upper liquid cooling cavity, and the outer wall of the upper liquid cooling cavity is used for contacting with the bottoms of a plurality of batteries;
The utility model discloses a liquid-cooled battery, including upper liquid cooling chamber, battery, upper liquid cooling chamber, lower liquid cooling intracavity, upper liquid cooling chamber, be provided with a plurality of side liquid cooling plates on the outer wall of upper liquid cooling chamber, a plurality of the battery with a plurality of side liquid cooling plate interval sets up, adjacent two the side liquid cooling plate respectively with the both sides wall contact of battery, the bottom rigid coupling of side liquid cooling plate and intercommunication have the inflow pipe, the inflow pipe runs through upper liquid cooling chamber and stretches into lower liquid cooling intracavity, be provided with out the liquid subassembly on the side liquid cooling plate.
Preferably, a partition plate is fixedly connected in the inner cavity of the double-layer liquid cooling plate, so that the inner cavity of the double-layer liquid cooling plate is divided into an upper-layer liquid cooling cavity and a lower-layer liquid cooling cavity, a first liquid inlet and a first liquid outlet are formed in the side wall, located on the same side, of the double-layer liquid cooling plate, and the upper-layer liquid cooling cavity is communicated with the lower-layer liquid cooling cavity through a liquid collecting component.
Preferably, the liquid collecting component comprises a liquid collecting piece, the liquid collecting piece is fixedly connected to the double-layer liquid cooling plate and is far away from the upper side of one end of the first liquid inlet, a confluence guide groove is formed in the bottom of the liquid collecting piece, the confluence guide groove is communicated with the lower liquid cooling cavity, a confluence guide pipe is fixedly connected and communicated with one side of the liquid collecting piece, and the confluence guide pipe is fixedly connected and communicated with the upper liquid cooling cavity.
Preferably, a plurality of notches are formed in the top of the double-layer liquid cooling plate, the notches are communicated with the upper-layer liquid cooling cavity, the bottom of the side-layer liquid cooling plate is fixedly connected in the notches, the liquid outlet component comprises a through hole formed in the bottom of the side-layer liquid cooling plate, a flow guide strip is fixedly connected on the inner top wall of the upper-layer liquid cooling cavity, a flow guide groove is formed in the top of the flow guide strip, the bottom of the side-layer liquid cooling plate is fixedly connected with the flow guide strip, the through hole is communicated with the flow guide groove, a second liquid outlet is formed in the side wall of the double-layer liquid cooling plate, and the flow guide groove is communicated with the second liquid outlet.
Preferably, a serpentine flow passage is adopted in the side liquid cooling plate, an inlet of the serpentine flow passage is communicated with the inflow conduit, and an outlet of the serpentine flow passage is communicated with the through hole.
Preferably, a plurality of second partition strips are fixedly connected in the upper liquid cooling cavity, and two adjacent second partition strips are arranged in a staggered mode, so that a baffling channel is formed in the upper liquid cooling cavity, and the second partition strips are positioned between the first liquid outlet and the converging duct.
Preferably, the guide strip is provided with a plurality of liquid-permeable holes.
Preferably, the side wall of the side liquid cooling plate, which is in contact with the battery, is fixedly connected with a heat conducting pad.
The utility model has the following technical effects that cooling liquid enters the upper liquid cooling cavity and the side liquid cooling plate respectively after entering the lower liquid cooling cavity, the upper liquid cooling cavity cools the bottom of the battery, the side liquid cooling plate cools the side of the battery, the cooling effect and the cooling efficiency of the battery are improved, and the inside of the double-layer liquid cooling plate is provided with the upper liquid cooling cavity and the lower liquid cooling cavity, so that the cooling liquid in the upper liquid cooling cavity absorbs heat to the battery and simultaneously can timely transfer heat to the cooling liquid in the lower liquid cooling cavity, thereby timely radiating heat, reducing the gradient of a temperature field of a battery pack, and further improving the heat radiating efficiency and the heat radiating effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an exploded view of a double-layer liquid cooling plate according to the present utility model;
FIG. 3 is a schematic diagram of a side liquid cooling plate according to the present utility model;
FIG. 4 is a schematic view of the structure of the notch in the present utility model;
Fig. 5 is a schematic structural view of a current collecting assembly according to the present utility model;
FIG. 6 is a schematic view of a flow guide strip according to the present utility model;
Fig. 7 is a schematic view showing an internal structure of a side liquid cooling plate according to the present utility model.
In the figure, the liquid cooling plate comprises a double-layer liquid cooling plate 1, a first liquid inlet, a first liquid outlet 3, a side liquid cooling plate 4, a flow inlet conduit 5, a separation plate 6, a liquid collecting piece 7, a liquid collecting piece 8, a converging guide groove 9, a converging conduit 10, a notch 11, a through hole 12, a flow guiding strip 13, a flow guiding groove 14, a second separation strip 15, a liquid penetrating hole 16, a heat conducting pad 17, a battery 18, a second liquid outlet 19 and a round hole.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-7, the utility model provides a cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery, which comprises a bottom double-layer liquid cooling plate 1, wherein an upper layer liquid cooling cavity and a lower layer liquid cooling cavity are arranged in the bottom double-layer liquid cooling plate 1, a first liquid inlet 2 is formed in the lower layer liquid cooling cavity, the lower layer liquid cooling cavity is communicated with the upper layer liquid cooling cavity, a first liquid outlet 3 is formed in the upper layer liquid cooling cavity, and the outer wall of the upper layer liquid cooling cavity is used for being in contact with the bottoms of a plurality of batteries 17;
A plurality of side liquid cooling plates 4 are arranged on the outer wall of the upper liquid cooling cavity, a plurality of batteries 17 are arranged at intervals with the plurality of side liquid cooling plates 4, two adjacent side liquid cooling plates 4 are respectively contacted with two side walls of the batteries 17, the bottoms of the side liquid cooling plates 4 are fixedly connected and communicated with a flow inlet conduit 5, the flow inlet conduit 5 penetrates through the upper liquid cooling cavity and stretches into the lower liquid cooling cavity, and a liquid outlet component is arranged on the side liquid cooling plates 4;
the cooling liquid enters the upper liquid cooling cavity and the side liquid cooling plate 4 respectively after entering the lower liquid cooling cavity, the upper liquid cooling cavity cools the bottom of the battery 17, the side liquid cooling plate 4 cools the side of the battery 17, the cooling effect and the cooling efficiency of the battery 17 are improved, and the inside of the double-layer liquid cooling plate 1 is arranged into the upper liquid cooling cavity and the lower liquid cooling cavity, so that the cooling liquid in the upper liquid cooling cavity absorbs heat to the battery 17, and heat can be timely transferred to the cooling liquid in the lower liquid cooling cavity, thereby timely radiating heat, reducing the gradient of a temperature field of a battery pack, and improving the heat radiating efficiency and the heat radiating effect.
According to a further optimization scheme, a partition plate 6 is fixedly connected in the inner cavity of the double-layer liquid cooling plate 1, so that the inner cavity of the double-layer liquid cooling plate 1 is divided into an upper-layer liquid cooling cavity and a lower-layer liquid cooling cavity, a first liquid inlet 2 and a first liquid outlet 3 are formed in the side wall, located on the same side, of the double-layer liquid cooling plate 1, and the upper-layer liquid cooling cavity and the lower-layer liquid cooling cavity are communicated through a liquid collecting component;
The liquid collecting assembly comprises a liquid collecting piece 7, the liquid collecting piece 7 is fixedly connected above one end, far away from the first liquid inlet 2, of the double-layer liquid cooling plate 1, a converging guide groove 8 is formed in the bottom of the liquid collecting piece 7, the converging guide groove 8 is communicated with a lower-layer liquid cooling cavity, one side of the liquid collecting piece 7 is fixedly connected and communicated with a converging guide pipe 9, and the converging guide pipe 9 is fixedly connected and communicated with an upper-layer liquid cooling cavity;
A liquid inlet through hole (not shown in the figure) is formed in the side wall of the double-layer liquid cooling plate 1 opposite to the first liquid outlet 3, and a converging conduit 9 is fixedly connected to the liquid inlet through hole and is communicated with the upper-layer liquid cooling cavity;
The top of the liquid collecting piece 7 is flush with the top of the double-layer liquid cooling plate 1;
The partition plate 6 is provided with a plurality of round holes 19, the inflow conduit 5 penetrates through the round holes 19 and stretches into the lower liquid cooling cavity, and the cooling liquid enters the lower liquid cooling cavity through the first liquid inlet 2, then flows into the side liquid cooling plate 4 through the inflow conduit 5, simultaneously flows into the converging guide groove 8 and flows into the upper liquid cooling cavity through the converging conduit 9.
According to a further optimization scheme, a plurality of notches 10 are formed in the top of the double-layer liquid cooling plate 1, the notches 10 are communicated with an upper-layer liquid cooling cavity, the bottom of the side liquid cooling plate 4 is fixedly connected in the notches 10, a liquid outlet component comprises a through hole 11 formed in the bottom of the side liquid cooling plate 4, a guide strip 12 is fixedly connected to the inner top wall of the upper-layer liquid cooling cavity, a guide groove 13 is formed in the top of the guide strip 12, the bottom of the side liquid cooling plate 4 is fixedly connected with the guide strip 12, the through hole 11 is communicated with the guide groove 13, a second liquid outlet 18 is formed in the side wall of the double-layer liquid cooling plate 1, and the guide groove 13 is communicated with the second liquid outlet 18;
The flow guide strip 12 is provided with a plurality of liquid penetration holes 15;
The side liquid cooling plate 4 is fixed in the notch 10 and sealed, the guide strip 12 is located one side of the upper liquid cooling cavity, circulation of cooling liquid on two sides of the guide strip 12 is facilitated through a plurality of liquid penetrating holes 15, cooling liquid enters the side liquid cooling plate 4 for cooling, flows into the guide groove 13 through the through hole 11 and then flows out through the second liquid outlet 18, and circulating flow is achieved.
According to the further optimization scheme, a serpentine flow channel is adopted in the side liquid cooling plate 4, the inlet of the serpentine flow channel is communicated with the inflow conduit 5, and the outlet of the serpentine flow channel is communicated with the through hole 11, so that uniformity of side cooling of the battery 17 is improved.
According to a further optimization scheme, a plurality of second division bars 14 are fixedly connected in the upper liquid cooling cavity, two adjacent second division bars 14 are arranged in a staggered mode, so that a baffling channel is formed in the upper liquid cooling cavity, the plurality of second division bars 14 are located between the first liquid outlet 3 and the confluence conduit 9, and after cooling liquid enters the upper liquid cooling cavity, folded flow can be achieved under the plurality of second division bars 14, and heat dissipation uniformity of the bottom surface of the battery 17 is improved.
According to the further optimization scheme, the side wall, which is in contact with the battery 17, of the side liquid cooling plate 4 is fixedly connected with the heat conducting pad 16, heat on the side surface of the battery 17 can be quickly transferred to the side liquid cooling plate 4 through the heat conducting pad 16, heat exchange efficiency is improved, thermal expansion of the single battery and impact in the vehicle movement process can be effectively prevented, and the mechanical pretightening force of a cooling system is better while the side surface of the single battery is cooled;
In an alternative embodiment valves are provided on the manifold 9 and the inlet 5 respectively, so that either side cooling alone, or bottom cooling alone, or both side cooling and bottom cooling together can be selected depending on the heat generated by the battery.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.
Claims (8)
1. The cooling system for bottom liquid cooling and side liquid cooling of the lithium ion power battery is characterized by comprising a bottom double-layer liquid cooling plate (1), wherein an upper layer liquid cooling cavity and a lower layer liquid cooling cavity are arranged in the bottom double-layer liquid cooling plate (1), a first liquid inlet (2) is formed in the lower layer liquid cooling cavity, the lower layer liquid cooling cavity is communicated with the upper layer liquid cooling cavity, a first liquid outlet (3) is formed in the upper layer liquid cooling cavity, and the outer wall of the upper layer liquid cooling cavity is used for being in contact with the bottoms of a plurality of batteries (17);
Be provided with a plurality of side liquid cooling boards (4) on the outer wall in upper liquid cooling chamber, a plurality of battery (17) with a plurality of side liquid cooling board (4) interval sets up, adjacent two side liquid cooling board (4) respectively with the both sides wall contact of battery, the bottom rigid coupling of side liquid cooling board (4) has inflow pipe (5) and intercommunication, inflow pipe (5) run through upper liquid cooling chamber and stretch into in the lower floor liquid cooling chamber, be provided with out liquid subassembly on side liquid cooling board (4).
2. The cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery according to claim 1, wherein a partition plate (6) is fixedly connected in an inner cavity of the double-layer liquid cooling plate (1), so that the inner cavity of the double-layer liquid cooling plate (1) is divided into an upper liquid cooling cavity and a lower liquid cooling cavity, the first liquid inlet (2) and the first liquid outlet (3) are formed in the side wall of the double-layer liquid cooling plate (1) on the same side, and the upper liquid cooling cavity and the lower liquid cooling cavity are communicated through a liquid collecting component.
3. The cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery according to claim 2, wherein the liquid collecting component comprises a liquid collecting piece (7), the liquid collecting piece (7) is fixedly connected above one end, far away from the first liquid inlet (2), of the double-layer liquid cooling plate (1), a converging guide groove (8) is formed in the bottom of the liquid collecting piece (7), the converging guide groove (8) is communicated with the lower liquid cooling cavity, one side of the liquid collecting piece (7) is fixedly connected and communicated with a converging guide pipe (9), and the converging guide pipe (9) is fixedly connected and communicated with the upper liquid cooling cavity.
4. The cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery according to claim 1, wherein a plurality of notches (10) are formed in the top of the double-layer liquid cooling plate (1), the notches (10) are communicated with the upper-layer liquid cooling cavity, the bottom of the side liquid cooling plate (4) is fixedly connected in the notches (10), the liquid outlet component comprises a through hole (11) formed in the bottom of the side liquid cooling plate (4), a guide strip (12) is fixedly connected on the inner top wall of the upper-layer liquid cooling cavity, a guide groove (13) is formed in the top of the guide strip (12), the bottom of the side liquid cooling plate (4) is fixedly connected with the guide strip (12), the through hole (11) is communicated with the guide groove (13), a second liquid outlet (18) is formed in the side wall of the double-layer liquid cooling plate (1), and the guide groove (13) is communicated with the second liquid outlet (18).
5. The cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery according to claim 4, wherein a serpentine flow passage is adopted in the side liquid cooling plate (4), an inlet of the serpentine flow passage is communicated with the inflow conduit (5), and an outlet of the serpentine flow passage is communicated with the through hole (11).
6. The cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery according to claim 3, wherein a plurality of second partition strips (14) are fixedly connected in the upper liquid cooling cavity, and two adjacent second partition strips (14) are arranged in a staggered mode, so that a baffling channel is formed in the upper liquid cooling cavity, and the second partition strips (14) are positioned between the first liquid outlet (3) and the converging duct (9).
7. The cooling system for bottom liquid cooling and side liquid cooling of lithium ion power battery according to claim 4, wherein a plurality of liquid permeable holes (15) are formed in the guide strip (12).
8. The cooling system for bottom liquid cooling and side liquid cooling of a lithium ion power battery according to claim 1, wherein a heat conducting pad (16) is fixedly connected to a side wall of the side liquid cooling plate (4) which is in contact with the battery (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421635864.6U CN222883641U (en) | 2024-07-11 | 2024-07-11 | Cooling system for bottom liquid cooling and side liquid cooling of lithium ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421635864.6U CN222883641U (en) | 2024-07-11 | 2024-07-11 | Cooling system for bottom liquid cooling and side liquid cooling of lithium ion power battery |
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| Publication Number | Publication Date |
|---|---|
| CN222883641U true CN222883641U (en) | 2025-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421635864.6U Active CN222883641U (en) | 2024-07-11 | 2024-07-11 | Cooling system for bottom liquid cooling and side liquid cooling of lithium ion power battery |
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| CN (1) | CN222883641U (en) |
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- 2024-07-11 CN CN202421635864.6U patent/CN222883641U/en active Active
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