CN214848773U

CN214848773U - Liquid cooling plate, battery module and battery pack

Info

Publication number: CN214848773U
Application number: CN202120634004.0U
Authority: CN
Inventors: 沈锋; 陈汉林; 廖宇梨
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-11-23
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses a liquid cooling board, battery module and battery package relates to battery technical field. This liquid cooling plate includes section bar board, a plurality of end cap and heating member. The section plate is provided with a heating cavity and a cooling cavity, and the heating cavity and the cooling cavity extend along the first direction of the section plate and penetrate through two ends of the first direction. A plurality of plugs are respectively arranged at the opening ends of the heating cavity and the cooling cavity, so that the cooling cavity forms a communicated flow channel, and the heating cavity forms a closed cavity. The heating member is arranged in the heating cavity. The coolant liquid flows and carries out the heat dissipation cooling to the electric core group in the runner, adds the heat-insulating material and installs in the heating intracavity to heat the electric core group through the liquid cooling board and heat up, improved the heating effect of liquid cooling board. The profile plate has simple processing technology and lower cost. And the air tightness of the flow channel and the heating cavity is better, so that the liquid cooling plate has better cooling and heating effects.

Description

Liquid cooling plate, battery module and battery pack

Technical Field

The utility model belongs to the technical field of the battery, especially, relate to a liquid cooling board, battery module and battery package.

Background

The liquid cooling plate is a main component of the battery pack heat management system. The liquid cooling channel of the liquid cooling plate is internally provided with cooling liquid to dissipate heat of the electric core group, or the electric core group is heated and heated through the heating body.

Traditional liquid cooling board is through milling positioning groove on the liquid cooling board, places the heating member in positioning groove and beats gluey fixed. The method increases the machining flow, not only improves the cost of the liquid cooling plate, but also easily influences the air tightness of the liquid cooling plate. Or, arrange the heating member externally on the liquid cooling board, the heating member heats the intensification through heating coolant liquid to the electric core group, and the in-process heat dissipation that the coolant liquid flows in the liquid cooling passageway is great, leads to heating efficiency to be lower.

In addition, the liquid cooling plate can also be a split structure, and is welded with the cover plate through the section material plate to form the liquid cooling plate, and a liquid cooling channel and a positioning groove for fixing the heating body are formed in the liquid cooling plate. Because the welding degree of difficulty is high, can't guarantee that cold passageway and positioning groove have good gas tightness, the condition that the coolant liquid streams to the positioning groove appears easily, has certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a liquid cooling board to improve the heating effect of the heating chamber in the liquid cooling board and the gas tightness in cooling chamber and liquid cooling board.

Another object of the utility model is to provide a battery module to improve the heating effect of the heating chamber in the liquid cooling inboard and the gas tightness in cooling chamber and liquid cooling board.

Still another object of the utility model is to provide a battery pack to improve the heating effect of the heating chamber in the liquid cooling inboard and the gas tightness in cooling chamber and liquid cooling board.

To achieve the purpose, the technical proposal adopted by the utility model is that:

a liquid cooling panel, comprising:

the cooling device comprises a profile plate, a heating device and a cooling device, wherein the profile plate is provided with a heating cavity and a cooling cavity, and the heating cavity and the cooling cavity both extend along a first direction of the profile plate and penetrate through two ends of the first direction;

the plurality of plugs are respectively arranged at the opening ends of the heating cavity and the cooling cavity so as to enable the cooling cavity to form a communicated flow passage, and the heating cavity forms a closed cavity;

the heating member, the heating member set up in the heating intracavity.

Further, the cross section of the section bar plate is in a harmonica tube structure, and the flow channel is a U-shaped channel or an S-shaped channel.

Further, a plurality of the plugs are welded to the opening ends of the heating cavity and the cooling cavity respectively.

Further, the liquid cooling plate further comprises a joint, the liquid cooling plate is provided with two first holes communicated with the flow channel, each first hole is provided with the joint, and the joints are configured such that cooling liquid enters the flow channel through one joint and flows out of the flow channel through the other joint.

Further, the liquid cooling plate further comprises a power supply plug, a second hole communicated with the heating cavity is formed in the liquid cooling plate, and the power supply plug is installed in the second hole and electrically connected with the heating element.

Furthermore, the upper end of the liquid cooling plate is also provided with a cross beam, and the cross beam is fixedly connected with the electric core group through a fastener.

Further, the profile plate is an aluminum profile plate formed by extrusion.

Further, the heating element is a heating resistance wire or a PTC heater.

The battery module comprises a battery cell group and the liquid cooling plate, wherein the battery cell group is arranged on the liquid cooling plate.

A battery pack comprises the battery module.

The utility model has the advantages that:

the utility model provides a liquid cooling board, battery module and battery package, a plurality of end caps are the heating chamber of shutoff section bar inboard respectively and the open end in cooling chamber to make the runner and the inclosed heating chamber of the inboard formation intercommunication of liquid cooling, the coolant liquid flows and dispels the heat to the electric core group in the runner and cools down, adds heat-insulating material and installs in the heating intracavity, and heats up the electric core group through the liquid cooling board, has improved the heating effect of liquid cooling board.

Drawings

Fig. 1 is an exploded view of the electric core assembly and the liquid cooling plate according to the embodiment of the present invention;

figure 2 is an end view of a profile plate provided by an embodiment of the present invention;

figure 3 is a schematic cross-sectional view of a profile plate provided by an embodiment of the present invention;

fig. 4 is an exploded view of the section bar plate, the plug, the connector and the power supply plug according to the embodiment of the present invention.

The component names and designations in the drawings are as follows:

10. the electric core group; 1. a profile plate; 11. a flow channel; 12. a heating cavity; 13. a first hole; 14. a second hole; 15. a cross beam; 16. a partition portion; 2. a plug; 21. a first plug; 22. a second plug; 23. a third plug; 3. a joint; 4. and a power supply plug.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element 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 invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The embodiment discloses a battery pack, which comprises a battery cell module. Specifically, the battery cell module includes battery cell group 10 and liquid cooling board, and battery cell group 10 sets up on the liquid cooling board. Simultaneously, can combine together liquid cooling board and heating member, the heating member passes through the liquid cooling board or the interior coolant liquid of liquid cooling inboard heats the intensification to electric core group 10 for liquid cooling board has cooling and heating function concurrently.

The existing integrated liquid cooling plate needs to be milled with a positioning groove for accommodating a heating body, so that the cost is increased. Or, the heating body is externally arranged on the liquid cooling plate, and the electric core group 10 is heated by the cooling liquid, and the heating efficiency is low due to the large heat energy loss of the cooling liquid. And the cold drawing of split type liquid passes through welded connection, can't guarantee that the cold passageway after the welding has good gas tightness with the positioning groove who holds the heating member, the condition that the coolant liquid streams to the positioning groove appears easily.

In order to solve the above problem, as shown in fig. 1 to fig. 3, the present embodiment further discloses a liquid cooling plate, which includes a section plate 1, a plurality of plugs 2, and a heating element. The profile plate 1 has a heating cavity 12 and a cooling cavity, both the heating cavity 12 and the cooling cavity extend along a first direction of the profile plate 1 and penetrate through both ends of the first direction. The plurality of plugs 2 are respectively arranged at the opening ends of the heating cavity 12 and the cooling cavity, so that the cooling cavity forms a communicated flow passage 11, and the heating cavity 12 forms a closed cavity. A heating element is disposed within the heating chamber 12.

The plurality of plugs 2 respectively plug the heating cavity 12 and the opening end of the cooling cavity in the section plate 1, so that a flow channel 11 and a closed heating cavity 12 which are communicated are formed in the liquid cooling plate, and cooling liquid flows in the flow channel 11 and dissipates heat and cools the electric core group 10. The heating element is arranged in the heating cavity 12, and heats the electric core group 10 through the liquid cooling plate, thereby reducing the heat energy loss and improving the heating effect of the liquid cooling plate. Because the section plate 1 is formed by extrusion, the air tightness of the flow channel 11 and the heating cavity 12 is better, so that the liquid cooling plate has higher cooling and heating performances.

The profile plate 1 of the embodiment is an aluminum profile plate formed by extrusion, is convenient to process and has lower cost. Of course, the profile plate 1 may be other metal profile plates.

As shown in fig. 2 and 3, the profile plate 1 of the present embodiment has a harmonica tube structure in cross section. The heating chamber 12 and the cooling chamber are both rectangular cavities and extend in a first direction of the liquid-cooled plate (the length direction of the liquid-cooled plate).

Specifically, the heating cavity 12 and the cooling cavity are six cavities, which are respectively a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity and a sixth cavity that are adjacent in sequence. The profile plate 1 has a partition 16 at the position of its longitudinal mid-line, and six cavities are symmetrically distributed along the partition 16. The partition part 16 is a side wall between the third cavity and the fourth cavity, and the wall thickness is greater than the thickness of the side walls between other adjacent cavities, which is beneficial to improving the structural strength of the profile plate 1.

As shown in fig. 3, the first chamber, the third chamber, the fourth chamber and the sixth chamber are used as part of the flow passage 11, and the second chamber and the fourth chamber are used as two heating chambers 12. So that the flow channels 11 are uniformly distributed on the cross section of the profile plate 1, and the cooling effect of the profile plate 1 is improved. The heating cavities 12 are symmetrically distributed, which is beneficial to improving the heating uniformity of the section bar plate 1.

Because the length of heating body is generally less than the length of section bar board 1, the length of the heating chamber 12 of this embodiment is less than the length of section bar board 1, and the both ends of heating chamber 12 do not exceed the tip of section bar board 1 length direction for first chamber and third chamber, fourth chamber and sixth chamber all communicate at the both ends of section bar board 1 length direction, form a mouthful style of calligraphy passageway.

Specifically, the direction indicated by the arrow in fig. 3 is the flow direction of the cooling liquid. The flowing directions of the cooling liquid in the first cavity and the third cavity are the same, and the flowing directions of the cooling liquid in the fourth cavity and the sixth cavity are the same. The length of the partition 16 is smaller than the length of the profile plate 1 and one end of the partition 16 is flush with the first end of the profile plate 1 in the length direction, so that the two square-shaped channels communicate at the second end of the profile plate 1 in the length direction, so that the flow channel 11 inside the profile plate 1 forms a U-shaped channel.

In other alternative embodiments, neither end of the heating chambers 12 extends beyond the longitudinal ends of the profile plate 1, and two heating chambers 12 may also be distributed in a staggered manner. That is, the end of one of the heating cavities 12 is flush with the first end of the profile plate 1 in the length direction, and the other heating cavity 12 is flush with the second end of the profile plate 1 in the length direction, so that the first cavity, the third cavity, the fourth cavity and the sixth cavity are sequentially communicated, and the flow channel 11 is an S-shaped channel.

Preferably, a plurality of plugs 2 are welded to the opening ends of the heating cavity 12 and the cooling cavity, respectively, so as to improve the air tightness between the heating cavity 12 and the cooling cavity. The plug 2 can also plug the heating cavity 12 and the opening end of the cooling cavity by bonding or interference connection.

Specifically, the openings at the two ends of the heating cavity 12 are first openings, and the openings at the first end and the second end of the profile plate 1 in the length direction are second openings and third openings, respectively. Because the sizes and the numbers of the first opening, the second opening and the third opening are different. Therefore, the plugs 2 of this embodiment include first plugs 21, second plugs 22 and third plugs 23, wherein four of the first plugs 21 are respectively welded to the first openings at the two ends of the heating cavity 12, two of the second plugs 22 are welded to the second openings at the first end of the section plate 1, and one of the third plugs 23 is welded to the third openings at the second end of the section plate 1.

The plugs 2 of this embodiment are all in a strip-shaped structure. The structure, size and number of the plugs 2 need to be adjusted adaptively according to different openings in the profile plate 1.

As shown in fig. 1 and 4, the liquid cooling plate is provided with two first holes 13 communicated with the flow channel 11, each first hole 13 is provided with a joint 3, and the cooling liquid enters the flow channel 11 through one joint 3 and flows out of the flow channel 11 through the other joint 3. The two connectors 3 are respectively a water inlet connector and a water outlet connector, the two connectors 3 are communicated with an external cooling liquid container, external cooling liquid enters the flow channel 11 through the water inlet connector and flows out of the water outlet connector, and circulating flow of the cooling liquid is achieved.

The two first holes 13 of the present embodiment are both opened at the first end of the profile plate 1 in the length direction and are located at both sides of the partition portion 16. One of the first holes 13 communicates with the first and third chambers, and the other first hole 13 communicates with the fourth and sixth chambers.

As shown in fig. 1 and 4, the liquid cooling plate further includes a power supply plug 4, the liquid cooling plate is provided with a second hole 14 communicated with the heating cavity 12, and the power supply plug 4 is installed in the second hole 14 and electrically connected to the heating element. The two second holes 14 of the present embodiment are respectively communicated with the second cavity and the fourth cavity, so that the external electric energy is transmitted to the heating member through the power supply plug 4, and the heating function of the liquid cooling plate is realized.

The heating member of this embodiment is heating resistance wire or PTC heater, and heating member circular telegram generates heat to directly transmit the heat to electric core group 10 through liquid cooling board. The specific installation process of the heating element is as follows: after the profile plate 1 is extruded and molded, the first plug 21 is welded at one opening end of the heating cavity 12, and the heating element is installed in the heating cavity 12 and is fixed by gluing. The heating element is electrically connected to an external power supply plug 4. Then, another first plug 21 is welded to the other open end of the heating chamber 12, and the heater assembly is completed.

As shown in fig. 1, the upper end of the liquid cooling plate is further provided with a beam 15, and the beam 15 is fixedly connected with the electric core assembly 10 through a fastener. The liquid cooling plate is provided with two cross beams 15 at intervals along the length direction thereof. The distance between the two beams 15 is approximately equal to the length of the electric core group 10, so that the electric core group 10 is connected with the two beams 15 through bolts, and the installation is convenient.

The crossbeam 15 of this embodiment is the aluminium alloy roof beam, and is with low costs, and light in weight is favorable to reducing the whole weight of liquid cooling board.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A liquid cooling panel, comprising:

the production line comprises a profile plate (1), wherein the profile plate (1) is provided with a heating cavity (12) and a cooling cavity, and the heating cavity (12) and the cooling cavity both extend along a first direction of the profile plate (1) and penetrate through two ends of the first direction;

the plugs (2) are respectively arranged at the opening ends of the heating cavity (12) and the cooling cavity, so that the cooling cavity forms a communicated flow passage (11), and the heating cavity (12) forms a closed cavity;

a heating element disposed within the heating chamber (12).

2. A liquid cooled plate according to claim 1, characterised in that the cross-section of the profiled plate (1) is a harmonica tube structure and that the flow channels (11) are U-shaped channels or S-shaped channels.

3. A liquid cooled plate according to claim 1, wherein a plurality of said plugs (2) are welded to the heating chamber (12) and the open end of the cooling chamber, respectively.

4. A liquid-cooled plate according to claim 1, characterized in that it further comprises a joint (3), said plate being provided with two first holes (13) communicating with said flow channels (11), each of said first holes (13) being fitted with a said joint (3), said joints (3) being configured so that the cooling liquid enters said flow channels (11) through one of said joints (3) and exits said flow channels (11) through the other of said joints (3).

5. The liquid cold plate of claim 1, further comprising a power supply plug (4), wherein said liquid cold plate defines a second hole (14) communicating with said heating cavity (12), and wherein said power supply plug (4) is mounted in said second hole (14) and electrically connected to said heating element.

6. The liquid cooling plate of claim 1, wherein the upper end of the liquid cooling plate is further provided with a cross beam (15), and the cross beam (15) is fixedly connected with the electric core group (10) through a fastener.

7. A liquid-cooled plate according to any one of claims 1-6, characterised in that the profile plate (1) is an aluminium profile plate formed by extrusion.

8. A liquid-cooled plate according to any of claims 1-6, characterised in that the heating element is a resistance heater wire or a PTC heater.

9. A battery module, comprising a battery cell pack (10) and a liquid-cooled plate according to any one of claims 1 to 8, wherein the battery cell pack (10) is disposed on the liquid-cooled plate.

10. A battery pack comprising the battery module according to claim 9.