CN212907888U

CN212907888U - Laminate polymer battery heat dissipation module

Info

Publication number: CN212907888U
Application number: CN202021211094.4U
Authority: CN
Inventors: 李振华
Original assignee: Soundon New Energy Technology Co Ltd
Current assignee: Soundon New Energy Technology Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-04-06
Anticipated expiration: 2030-06-28

Abstract

The utility model provides a laminate polymer battery heat dissipation module, includes: the battery module, the battery module includes the battery box and is located the inside electric core group of range in order of battery box, the one side or several faces of battery box surface are equipped with the radiation dope layer, the liquid cooling board is located battery module below, the liquid cooling board includes feed liquor pipe, mass flow body, mouth organ pipe and drain pipe, the mass flow body is located the both ends of mouth organ pipe, feed liquor pipe and drain pipe are located the mass flow body at both ends respectively. The utility model discloses a laminate polymer battery heat dissipation module through the joint use at battery box surface coating radiation coating and liquid cold plate, has improved the radiating efficiency of battery module, solves the poor problem of current high-power laminate polymer battery module radiating effect.

Description

Laminate polymer battery heat dissipation module

Technical Field

The utility model belongs to the technical field of the laminate polymer battery module, concretely relates to laminate polymer battery heat dissipation module.

Background

At present, a soft package lithium ion battery used is a battery pack formed by a plurality of single batteries in a series-parallel connection mode, so that high-power charging and discharging are realized, and the high-power requirement is met. When charging and discharging, the conversion efficiency is less than 100%, and heat is generated inside. If the heat dissipation is not timely, the local temperature of the battery can be quickly raised, the service life of the battery is greatly shortened, and even thermal runaway of the battery can be caused in severe cases, and deflagration can occur.

With the improvement of the power density of the soft package battery, the existing heat management mode can not meet the requirement of temperature control gradually, and the realized efficiency is too low or the ideal effect can not be achieved.

The utility model patent CN 210640339U discloses a battery water-cooling plate structure, including battery module and water-cooling board, the water-cooling board includes the mass flow body, backward flow body, water-cooling plate body, inlet, liquid outlet, feed liquor groove, drain tank, water-cooling hole, leads to groove and heat dissipation through-hole, has increased the area of contact of water-cooling plate body and battery module, has add the backward flow body and has changed the water-cooling liquid flow direction, has improved the backward flow body shape and has carried out preliminary heat dissipation. Therefore, the utility model discloses following beneficial effect has: (1) the contact area between the water-cooling plate body and the battery is increased, and the heat dissipation efficiency of the battery is improved; (2) the temperature difference of the batteries in the module is reduced, and the temperature consistency of the batteries in the module is improved; (3) and a heat dissipation node reflux body is added, so that the heat dissipation efficiency of the battery is improved. The disadvantages of the reference are as follows: (1) only the water cooling plate is arranged at the bottom of the battery module, the heat can be dissipated only at the bottom of the battery module, and no heat dissipating device is arranged at the top and the side surfaces of the battery module; (2) the water cooling plate is provided with a backflow structure, and the backflow water is continuously used after passing through the battery module, so that the heat dissipation effect is reduced; (3) only one battery module can be cooled.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problem among the prior art, the utility model provides a laminate polymer battery heat dissipation module, through the combined use at battery box surface coating radiation coating and liquid cold plate to solve the poor problem of current high-power laminate polymer battery module radiating effect.

In order to achieve the above object, the utility model discloses a following technical scheme realizes:

the utility model provides a laminate polymer battery heat dissipation module, includes:

the battery module comprises a battery box body and electric core groups which are arranged in the battery box body in order, wherein one surface or a plurality of surfaces of the outer surface of the battery box body are provided with radiation coating layers for transmitting partial heat of the battery box body to the air in a heat radiation mode;

and the liquid cooling plate is arranged below the battery module and used for transferring partial heat of the battery box body to the liquid cooling plate in a heat conduction mode.

Further, the liquid cooling plate comprises a harmonica pipe for liquid flowing, and liquid inlet devices and liquid outlet devices are arranged at two ends of the harmonica pipe.

Further, the inlet means includes first mass flow body and feed liquor pipe, be equipped with first insertion groove on the first mass flow body, harmonica pipe one end is fixed in through first insertion groove on the first mass flow body, the feed liquor pipe is located on the first mass flow body.

Further, go out the liquid device and include second mass flow body and drain pipe, be equipped with the second insertion groove on the second mass flow body, the harmonica pipe other end is fixed in through the second insertion groove on the second mass flow body, the drain pipe is located on the second mass flow body.

Furthermore, the first current collector and the second current collector are both provided with a collecting pipe and sealing covers positioned at two ends of the collecting pipe.

Furthermore, a plurality of flow channels are arranged in the harmonica tube and are used for enabling water flow entering from the liquid inlet tube to uniformly flow in the harmonica tube.

Further, the liquid cooling board top is fixed and is equipped with the heat-conducting plate, the heat-conducting plate width is greater than liquid cooling board width, when battery module width is greater than liquid cooling board width, can be through the heat-conducting plate with the heat of battery module bottom all lead on the liquid cooling board.

Furthermore, one side or several sides of the internal surface of the battery box body are provided with heat conducting glue, and the arrangement of the heat conducting glue is beneficial to the adhesion between the electric core group and the box body and the heat transfer.

Further, liquid cooling board top is provided with the silica gel pad, the upper and lower surface of silica gel pad respectively with the laminating of battery module and liquid cooling board, the existing heat conduction's of silica gel pad effect in this application can also play the cushioning effect to the contact surface between battery module and the liquid cooling board simultaneously.

Further, place a plurality of silica gel pads and battery module on the liquid cooling board.

Further, the heat conducting plate is one of an aluminum plate or a copper plate.

The working principle is as follows: when laminate polymer battery module during operation, the heat of electric core group conducts the battery box surface through the heat conduction glue of contact. Since the outer surface of the battery case is painted with the radiation paint, part of the heat is transferred to the surrounding air by means of heat radiation. Simultaneously, have the coolant liquid that flows in the liquid cooling board, the heat is transmitted on the liquid cooling board behind lower surface, the silica gel pad of battery box by heat-conduction mode to partial heat is taken away to the coolant liquid, reaches and satisfies laminate polymer battery radiating effect high-efficiently.

The utility model discloses beneficial effect as follows:

(1) the utility model discloses the surface coating of battery box has radiation coating for in the part heat of laminate polymer battery module can transmit the ambient air through the radiation mode, battery bottom half is provided with the liquid cooling board, takes away the heat of battery module through the coolant liquid that flows, improves the radiating efficiency of battery module, through the joint application of radiation coating and liquid cooling board, greatly reduced the radiating efficiency of battery module.

(2) The utility model discloses be equipped with the silica gel pad between battery box and the liquid cooling board, can not only play the effect of heat conduction, improve the radiating effect, can also play the cushioning effect to the contact surface between battery module and the liquid cooling board simultaneously.

(3) The utility model discloses internal surface at the battery box sets up the heat-conducting glue for laminate more between electric core group and the box, be favorable to thermal transmission, make the radiating effect improve.

(4) The utility model discloses the laminate polymer battery heat dissipation module of preparation, when battery module quick charge, can in time shift the heat in the module, reduce the inside temperature difference of module when lowering the temperature, prevent in the battery module local high temperature and arouse dangers such as performance reduction explosion even.

Drawings

Fig. 1 is an explosion schematic view of the heat dissipation module of the soft-package battery of the present invention;

fig. 2 is an assembly schematic diagram of the heat dissipation module of the soft-package battery of the present invention;

FIG. 3 is an exploded view of the liquid cooling plate and the heat conducting plate of the present invention;

fig. 4 is an exploded view of the current collector of the present invention;

FIG. 5 is a schematic view of the inner flow passage of the harmonica of the present invention;

fig. 6 is an exploded view of the battery module of the present invention;

FIG. 7 is an exploded view of the electric core assembly and the heat conducting glue of the present invention;

fig. 8 is a schematic diagram of a single cell structure of the present invention;

the above reference numerals:

1. a battery module; 2. a liquid-cooled plate; 3. irradiating the coating layer; 4. heat conducting glue; 5. a silica gel pad;

11. a battery case; 12. the electric core group; 13. heat conducting glue; 121. an electric core;

111. an outer frame; 112. a top plate; 113. a support;

21. a harmonica tube; 22. a first current collector; 23. a liquid inlet pipe; 24. a second current collector; 25. a liquid outlet pipe; 26. a header pipe; 27. sealing the cover; 28. a heat conducting plate;

221. a first insertion slot; 241. a second insertion slot; 211. and a flow passage.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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 therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1-8, the present embodiment provides a pouch battery heat dissipation module, including: battery module 1 and liquid cold plate 2, battery module 1 includes battery box 11 and is located the inside electric core group 12 of range in order of battery box, the coating of one side or several faces of battery box 11 surface has radiation coating 3, in this embodiment, battery box 11 comprises frame 111, roof 112 and two supports 113 box structure, position based on the position of the position and electric core 121 shown in the drawing, radiation coating 3 coats on battery box 21, the left side and the right side, be favorable to some heat can be through the radiation mode in transmitting to the ambient air.

The liquid cooling plate 2 is arranged below the battery module 1, specifically, the liquid cooling plate 2 is arranged below the battery box body 11 and used for transferring partial heat of the battery box body 11 to the liquid cooling plate 2 in a heat conduction mode.

The liquid cooling plate 2 comprises a harmonica tube 21 for liquid flowing, and a liquid inlet device and a liquid outlet device are arranged at two ends of the harmonica tube 21. Be provided with many runners 211 in the mouth organ pipe 21 for the even inside flow of mouth organ pipe 21 of coolant liquid that gets into from feed liquor pipe 23 takes away the heat that battery box 11 gived off, especially the heat that gives off at battery box 11 bottom, then takes away the thermal coolant liquid and flows out from drain pipe 25.

The liquid inlet device comprises a first current collector 22 and a liquid inlet pipe 23, a first insertion groove 221 is formed in the first current collector 22, one end of the harmonica pipe 21 is fixed on the first current collector 22 through the first insertion groove 221, and the liquid inlet pipe 23 is arranged on the first current collector 22. The liquid outlet device comprises a second current collector 24 and a liquid outlet pipe 25, a second insertion groove 241 is formed in the second current collector 24, the other end of the harmonica shaped pipe 21 is fixed on the second current collector 24 through the second insertion groove 241, and the liquid outlet pipe 25 is arranged on the second current collector 24.

The first current collector 22 and the second current collector 24 are both provided with a collecting pipe 26 and sealing covers 27 positioned at two ends of the collecting pipe 26, the sealing covers are arranged, the inside of the current collectors can be conveniently observed by the sealing covers 27, and activities such as cleaning are convenient to carry out.

In this embodiment, the liquid inlet pipe 23 and the liquid outlet pipe 25 are respectively disposed at the middle positions above the first collecting pipe 22 and the second current collector 24, the collecting pipe 26 is a cylinder-like hollow pipe, two ends of the collecting pipe are sealed by a cover plate 27, and the liquid inlet pipe 23, the collecting pipe 26, the harmonica pipe 21 and the liquid outlet pipe 25 are fixed together.

In the specific embodiment, a heat conducting plate 28 is fixedly arranged above the liquid cooling plate 2, the width of the heat conducting plate 28 is greater than the width of the liquid cooling plate 2, when the width of the battery module 1 is greater than the width of the liquid cooling plate 2, the heat at the bottom of the battery module 1 can be completely conducted into the liquid cooling plate 2 through the heat conducting plate 28, wherein the heat conducting plate 28 is one of an aluminum plate and a copper plate.

In this embodiment, the heat conducting plate 15 is an aluminum plate, and in a specific configuration, the heat conducting plate 15, the liquid inlet pipe 11, the current collector 12, the harmonica pipe 13, and the liquid outlet pipe 14 are welded together to form a complete liquid cooling plate 1.

One side or several faces of battery box 11 internal surface are equipped with heat conduction glue 4, and in this embodiment, based on the position that the figure shows and the position of electric core 121, heat conduction glue 4 locates the higher authority, following, the left side and the right side of battery box 11 internal surface for laminate more between electric core group 12 and the box, be favorable to thermal transmission.

The top of the liquid cooling plate 2 is provided with a silica gel pad 5, the upper and lower surfaces of the silica gel pad 5 are respectively attached to the battery module and the liquid cooling plate 2, in this embodiment, the silica gel pad 5 is placed on the heat conducting plate 28, so that the battery module 1 and the liquid cooling plate 2 are respectively attached to the silica gel pad 5, the heat conducting function is achieved, and meanwhile, the buffer effect can be achieved on the contact surface between the battery module 1 and the liquid cooling plate 2.

Can place a plurality of silica gel pads 5 and battery module 1 on the liquid cold plate 2, in this embodiment, can place two silica gel 5 on the liquid cold plate 2, can place a battery module 1 on two silica gel pads 5 respectively, in other embodiments, can place 1 silica gel pad 5 and battery module 1 on the liquid cold plate 2, also can place a plurality ofly, and concrete setting is decided according to the in service behavior.

The utility model discloses a laminate polymer battery heat dissipation module through the joint use at battery box surface coating radiation coating and liquid cooling board, has improved laminate polymer battery module's radiating efficiency greatly.

The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments disclosed herein. To the utility model belongs to the field of the ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a laminate polymer battery heat dissipation module which characterized in that includes:

the battery module comprises a battery box body and electric core groups which are orderly arranged in the battery box body, wherein one surface or a plurality of surfaces of the outer surface of the battery box body are provided with radiation coating layers;

and the liquid cooling plate is arranged below the battery module.

2. The laminate battery heat dissipation module of claim 1, wherein the liquid cooling plate comprises a harmonica tube for liquid flowing, and a liquid inlet device and a liquid outlet device are arranged at two ends of the harmonica tube.

3. The heat dissipation module for the soft-package battery according to claim 2,

the liquid inlet device comprises a first current collector and a liquid inlet pipe, a first insertion groove is formed in the first current collector, one end of the harmonica pipe is fixed on the first current collector through the first insertion groove, and the liquid inlet pipe is arranged on the first current collector;

the liquid outlet device comprises a second current collector and a liquid outlet pipe, a second insertion groove is formed in the second current collector, the other end of the harmonica pipe is fixed on the second current collector through the second insertion groove, and the liquid outlet pipe is arranged on the second current collector.

4. The laminate battery cooling module as claimed in claim 3, wherein the first current collector and the second current collector are each provided with a header and a cover at two ends of the header.

5. The heat dissipation module for the soft package battery according to any one of claims 2 to 4, wherein a plurality of flow channels are arranged in the harmonica tube.

6. The laminate polymer battery heat dissipation module of claim 1, wherein a heat conduction plate is fixedly arranged above the liquid cooling plate, and the width of the heat conduction plate is greater than that of the liquid cooling plate.

7. The laminate polymer battery heat dissipation module of claim 1, wherein one or more surfaces of the inner surface of the battery box body are provided with heat-conducting glue.

8. The laminate battery heat dissipation module according to claim 1, wherein a silicone pad is arranged above the liquid cooling plate, and the upper surface and the lower surface of the silicone pad are respectively attached to the battery module and the liquid cooling plate.

9. The laminate battery heat dissipation module of claim 8, wherein the liquid cooling plate is provided with a plurality of silicone pads and battery modules.

10. The laminate battery heat dissipation module of claim 6, wherein the heat conducting plate is one of an aluminum plate or a copper plate.