CN217062284U

CN217062284U - Battery module, battery package and vehicle

Info

Publication number: CN217062284U
Application number: CN202123170767.3U
Authority: CN
Inventors: 杜晓冬
Original assignee: Beijing CHJ Automobile Technology Co Ltd
Current assignee: Beijing CHJ Automobile Technology Co Ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-07-26
Anticipated expiration: 2031-12-15

Abstract

The utility model relates to an energy storage equipment technical field especially relates to a battery module, battery package and vehicle. The battery module comprises a heat exchange plate and a plurality of battery units, the battery units are arranged side by side, the battery units are provided with first faces and second faces adjacent to the first faces, the heat exchange plate comprises a first plate body and a second plate body connected with the first plate body, the first plate body is located between the first faces of any two adjacent battery units, and the second plate body is located on the second faces of the battery units. Through the setting of heat transfer board, can realize equal gentle quick heat conduction, during the use, the first plate body is with the heat transfer to the second plate body of the first side of battery unit, and the heat looses to the outside through the second plate body, has the advantage that the heat conduction efficiency is high. Meanwhile, the heat exchange plate is thinner than the heat pipe and is arranged between the adjacent battery units, so that the size of the whole battery module can be reduced.

Description

Battery module, battery package and vehicle

Technical Field

The utility model relates to an energy storage equipment technical field especially relates to a battery module, battery package and vehicle.

Background

With the improvement of energy density of power batteries and the aggravation of requirements on high-rate quick charging performance, a liquid-cooling type thermal management system faces more and more challenges, the requirement on heat dissipation power is hardly met by cooling the bottom surface or the side surface of a single battery, and the research hotspot is formed by further improving the cooling efficiency of the liquid-cooling system by combining a new material and multiple cooling modes.

At present, a battery pack in the prior art is cooled through a heat pipe, the heat pipe is a high-efficiency heat exchange element based on gas-liquid phase change principle, the heat pipe is adopted as a heat transfer element for high-temperature heat dissipation/low-temperature heating of the battery, and the heat pipe is a novel heat management mode, but has the problem of large size, so that the whole battery pack is large in size.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a battery module, a battery pack, and a vehicle.

The present disclosure provides a battery module, including:

a plurality of battery cells arranged side by side and having a first face and a second face adjacent to the first face;

the heat exchange plate comprises a first plate body and a second plate body connected with the first plate body, the first plate body is located between any two adjacent first surfaces of the battery units, and the second plate body is located on a second surface of the battery units.

Optionally, the heat exchange plate includes a flat heat pipe.

Optionally, a first channel is arranged inside the first plate body, and a cooling liquid is arranged in the first channel;

the first plate body comprises an evaporation section and a condensation section, and the condensation section is arranged close to the second plate body;

the cooling liquid is gasified into gas in the evaporation section, the gas flows to the condensation section and is liquefied into the cooling liquid in the condensation section, and the liquefied cooling liquid flows to the evaporation section along the first channel.

Optionally, a second channel is disposed inside the first plate, a heat pipe is disposed in the second channel, and at least one end of the heat pipe is disposed close to the second plate.

Optionally, the second channel includes an evaporation channel and a condensation channel, and the condensation channel is disposed adjacent to and parallel to the second plate body; the evaporation channel is communicated with the condensation channel, and the evaporation channel extends towards one end, far away from the second plate body, of the first plate body.

The present disclosure also provides a battery pack, including: the battery module is provided.

Optionally, the battery pack further includes a first liquid cooling plate and a second liquid cooling plate, where the first liquid cooling plate is located on one side of the battery module and is in contact with the second plate of the battery module; the second liquid cooling plate contacts with the battery module, and the second liquid cooling plate is far away from the first liquid cooling plate.

Optionally, a first flow channel is disposed on the first liquid cooling plate, and the first flow channel has a first inlet and a first outlet;

a second flow passage is arranged on the second liquid cooling plate, and the second flow passage is provided with a second inlet and a second outlet;

the first inlet and the second outlet are located on the same side of the battery module, and the first outlet and the second inlet are located on the same side of the battery module.

Optionally, the first liquid cooling plate is connected with the second plate body through a first heat conducting glue;

and the second liquid cooling plate is connected with the battery module through second heat-conducting glue.

Optionally, the battery pack further includes a box body, and the first liquid cooling plate, the battery module and the second liquid cooling plate are sequentially installed in the box body.

The present disclosure also provides a vehicle comprising: the battery pack is provided.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the battery module that this disclosed embodiment provided, including heat transfer board and a plurality of battery unit, a plurality of battery unit set up side by side, and the battery unit has first face and the second face adjacent with first face, and the heat transfer board includes first plate body and the second plate body of being connected with first plate body, and first plate body is located between the first face of two arbitrary adjacent battery units, and the second plate body is located the second face of battery unit. Through the setting of heat transfer board, can realize the samming and quick heat conduction, during the use, the first plate body is with the heat transfer to the second plate body of the first face of battery unit, and the heat is scattered to the outside through the second plate body, has the advantage that heat conduction efficiency is high. Meanwhile, the heat exchange plate is thinner than the heat pipe and is arranged between the adjacent battery units, so that the size of the whole battery module can be reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the disclosure;

fig. 2 is a schematic structural diagram of a heat exchange plate of a battery module according to an embodiment of the disclosure;

fig. 3 is a schematic structural view illustrating another heat exchange plate of a battery module according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a battery pack according to an embodiment of the disclosure;

fig. 5 is an exploded view of a battery pack according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a first liquid cold plate of a battery pack according to an embodiment of the disclosure;

fig. 7 is a schematic structural diagram of a second liquid cooling plate of a battery pack according to an embodiment of the disclosure.

10, a battery module; 1. a battery cell; 11. a first side; 2. a heat exchange plate; 21. a first plate body; 211. an evaporation section; 212. a condensing section; 22. a second plate body; 23. a second channel; 24. a heat pipe; 20. a first liquid cold plate; 201. a first flow passage; 202. a first inlet; 203. a first outlet; 30. a first thermally conductive adhesive; 40. a second liquid cooling plate; 401. a second flow passage; 402. a second inlet; 403. a second outlet; 50. a second thermally conductive adhesive; 60. and (4) a box body.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Referring to fig. 1 to 3, the present disclosure provides a battery module 10, which includes a heat exchanging plate 2 and a plurality of battery units 1, where the battery units 1 are arranged side by side, each battery unit 1 has a first surface 11 and a second surface adjacent to the first surface 11, the heat exchanging plate 2 includes a first plate 21 and a second plate 22 connected to the first plate 21, the first plate 21 is located between the first surfaces 11 of any two adjacent battery units 1, and the second plate 22 is located on the second surface of each battery unit 1. Through the setting of heat transfer board 2, can realize equal gentle quick heat conduction, during the use, first plate body 21 is with the heat transfer to second plate body 22 of the first face 11 of cell 1, and the heat looses to the outside through second plate body 22, has the advantage that heat conduction efficiency is high. Meanwhile, since the heat exchange plates 2 are thinner than the heat pipes and are disposed between the adjacent battery cells 1, the size of the entire battery module 10 can be reduced.

The first surface 11 may be a side surface of the battery cell 1, and the second surface may be a bottom surface of the battery cell 1. The size of first face 11 is greater than the size of second face, and first face 11 then sets up between the big face of battery unit 1 for the big face of battery unit 1 promptly, and the heat with battery unit 1 that can be quick is derived to second plate body 22, derives to the outside through second plate body 22.

In addition, the size of the first plate 21 is smaller than or equal to the size of the first surface 11, and the size of the second plate 22 is smaller than or equal to the size of the second surface. Of course, the size of the first plate body 21 may be the same as the size of the first surface 11, and the size of the second plate body 22 may be the same as the size of the second surface, which may be more beneficial for heat conduction of the heat exchange plate 2.

The contact surface between the heat exchange plate 2 and the battery unit 1 can be coated with heat-conducting glue or silicone grease to fill gaps to enhance the heat exchange effect and provide a certain cushioning effect.

The battery module 10 further includes a frame structure (not numbered), the frame structure includes end plates, side plates, a top plate and a bottom plate, the end plates, the side plates, the top plate and the bottom plate are connected to each other, and the plurality of battery units 1 are located in an inner cavity of the frame structure and stacked in the inner cavity, and the stacking direction may be a length direction, a width direction or a height direction. The battery unit 1 may be a secondary battery that can be repeatedly charged and discharged.

The heat exchange plate 2 comprises a flat heat pipe, and the heat of the first surface 11 of the battery unit 1 is conducted out through the flat heat pipe, so that the heat exchange plate has the advantage of high heat conduction efficiency.

During the use, cell 1 mainly dispels the heat through first face 11, and first plate body 21 sets up between adjacent cell 1's first face 11, consequently, can be with cell 1's heat transfer to second plate body 22 through first plate body 21's setting, then derive to the outside through second plate body 22, the advantage of the high and cell 1 temperature uniformity of heat conduction efficiency has, and dull and stereotyped heat pipe is thinner, and establish between adjacent cell 1, thereby can also reduce whole battery module 10's size.

In some embodiments, a first channel is disposed inside the first plate body 21, a cooling liquid is disposed in the first channel, the first plate body 21 includes an evaporation section 211 and a condensation section 212, the condensation section 212 is disposed near the second plate body 22, because the temperature of the evaporation section 211 is higher, the cooling liquid is vaporized into a gas in the evaporation section 211, at this time, the temperature of the evaporation section 211 can be reduced, and then the gas flows to the condensation section 212, because the temperature of the condensation section 212 is lower, the gas can be liquefied into a liquid cooling liquid in the condensation section 212, the liquefied cooling liquid flows to the evaporation section 211 along the first channel, and continues to be vaporized into a gas in the evaporation section 211, and through the conversion of circulation of the gas and the liquid cooling liquid, the evaporation section 211 can be cooled, and heat can be efficiently conducted, the heat is guided to the second plate body 22, and is guided to the outside through the second plate body 22.

Wherein, evaporation zone 211 is located the first face 11 of cell 1, and the area is great, and condensation segment 212 also is located the first face 11 of cell 1, but the area is less, and is close to the setting of second plate body 22, and the heat of battery mainly carries out heat conduction through evaporation zone 211, has the advantage that the heat conduction efficiency is high.

The first channel is provided in plurality, and the liquid cooling liquid in the first channel is less, and can be attached in the first channel through the adhesive force (capillary force) of the liquid.

In other embodiments, the second channel 23 is disposed inside the first plate body 21, the heat pipe 24 is disposed in the second channel 23, at least one end of the heat pipe 24 is disposed near the second plate body 22, and one end of the heat pipe 24 near the second plate body 22 is the condensation section 212, and one end of the heat pipe 24 far away from the second plate body 22 is the evaporation section 211, heat in the battery unit 1 is conducted to the heat pipe 24 in the condensation section 212 through the heat pipe 24 in the evaporation section 211, and then the heat pipe 24 in the condensation section 212 conducts the heat to the second plate body 22, and is led out to the outside through the second plate body 22.

Wherein the second channels 23 include evaporation channels and condensation channels, the condensation channels being disposed adjacent to the second plate body 22 and parallel to the second plate body 22; the evaporation channel is communicated with the condensation channel, and extends towards one end of the first plate body 21 far away from the second plate body 22, so that the heat pipe 24 can be conveniently put into the evaporation channel, and at the moment, the heat of the battery unit 1 is dissipated through the heat pipe 24.

The heat pipe 24 may be a flat heat pipe 24, so that the first plate 21 is thin and is disposed between the adjacent battery cells 1, thereby also reducing the size of the entire battery module 10.

In addition, the heat pipe 24 has a straight section and a bent section, a part of which is installed in the evaporation channel; the other part of the bent section is installed in the condensation channel, the bent section of the part is in contact with the second plate body 22 and is arranged in parallel, the part of the bent section parallel to the second plate body 22 is a condensation section, and the other part of the heat pipe 24 is an evaporation section, so that the evaporation section conducts heat in the battery unit 1 to the condensation section, and then the condensation section conducts the heat to the second plate body 22.

The heat pipe 24 may be provided as one or more, which may be determined according to the usage requirement.

To sum up, the battery module 10 that this disclosed embodiment provided, through the setting of heat transfer board 2, can realize quick heat conduction, during the use, first plate body 21 is with the heat transfer to second plate body 22 of the first face 11 of cell 1, and the heat is scattered to the outside through second plate body 22, has the advantage that heat conduction efficiency is high, can effectively satisfy the cooling demand under the higher and high multiplying power condition of filling soon of battery module 10 energy density, guarantees product reliability and security. While the heat exchange plates 2 are thin and provided between the adjacent battery cells 1, so that the size of the entire battery module 10 can also be reduced.

Referring to fig. 4 to 7, the embodiment of the present disclosure further provides a battery pack, which includes a case 60 and a battery module 10 disposed inside the case 60, where the case 60 may be made of aluminum, aluminum alloy or other metal materials, and a receiving cavity is formed in the case 60. In one possible design, the box 60 is an open-top box 60 and includes an upper box cover having a size corresponding to the size of the opening at the top of the box 60, and the upper box cover can be secured to the opening by fasteners such as bolts to form a receiving chamber. The accommodating cavity can accommodate one or more than two battery modules 10, the battery modules 10 can be arranged in the box body 60 side by side along the length direction of the battery pack or in the width direction of the battery pack, and each battery module 10 is fixed with the box body 60. Meanwhile, in order to improve the sealing performance of the case 60, a sealing member may be further provided between the upper case cover and the case 60.

As shown in fig. 4, the battery pack further includes a first liquid cooling plate 20, the first liquid cooling plate 20 is located on one side of the battery module 10, and contacts with the second plate 22 of the battery module 10, so as to guide out the heat of the second plate 22, further improve the heat conduction efficiency, and effectively meet the cooling requirements of the battery pack under the conditions of high energy density and high-rate quick charging.

Wherein, first liquid cold plate 20 is connected with second plate body 22 through first heat-conducting glue 30 to the heat of second plate body 22 transmits first liquid cold plate 20 through first heat-conducting glue 30, and first liquid cold plate 20 can cool off the bottom of battery module 10. Because the heat conduction coefficient of the heat exchange plate 2 is higher, the heat of the large surface of the battery unit 1 can be quickly conducted to the first liquid cooling plate 20 at the bottom, and the heat exchange plate has the effects of temperature equalization and quick cooling.

Placing thermal-insulated blotter between the both sides of foretell battery module 10 and box 60 can play thermal-insulated and cushioning's effect, avoids battery module 10 to collide with box 60 and damaged.

In some embodiments, the battery pack further includes a second liquid cooling plate 40, the second liquid cooling plate 40 being in contact with the battery module 10, and the second liquid cooling plate 40 being disposed away from the first liquid cooling plate 20, i.e., the second liquid cooling plate 40 and the first liquid cooling plate 20 are mounted on opposite sides of the battery module 10. Second liquid cooling board 40 is located the top of battery module 10 this moment, can cool off the top of battery module 10, and improvement battery module 10's that can be further through setting up of second liquid cooling board 40 cooling effect.

Wherein, second cold plate 40 is connected with battery module 10 through second heat-conducting glue 50 to the heat at battery module 10 top transmits second cold plate 40 through second heat-conducting glue 50, and second cold plate 40 can cool off the top of battery module 10.

In addition, the first liquid cooling plate 20, the battery module 10, and the second liquid cooling plate 40 are sequentially installed in the case 60, thereby completing the assembly of the entire battery pack. The second liquid cooling plate 40 is used to replace the conventional upper case cover, and has an advantage of good cooling effect compared with the conventional upper case cover.

In some embodiments, the first fluid passage 201 is disposed on the first fluid cooling plate 20, the first fluid passage 201 has a first inlet 202 and a first outlet 203, the second fluid passage 401 is disposed on the second fluid cooling plate 40, the second fluid passage 401 has a second inlet 402 and a second outlet 403, the first inlet 202 and the second outlet 403 are located on the same side of the battery module 10, and the first outlet 203 and the second inlet 402 are located on the same side of the battery module 10, so that during cooling, the fluid in the first fluid cooling plate 20 and the fluid in the second fluid cooling plate 40 flow in opposite directions, thereby improving the cooling effect of the battery pack.

The plurality of first flow channels 201 on the first liquid cooling plate 20 are arranged in parallel, and the cold liquid enters from the first inlet 202 and flows to the first flow channels 201, and then is discharged from the first outlet 203, so that heat can be taken away, and cooling is performed.

In addition, first liquid cold drawing 20 and second liquid cold drawing all can adopt nonmetal runner plate and aluminum plate to bond and form, because the runner plate is non-metallic material, coefficient of heat conductivity is far less than metal and density is little, makes this battery package thermal insulation performance excellent, and the quality is light.

The material of the flow channel plate may be PA, but not limited to PA, and the flow channel plate may be a non-metallic material such as PC or PP. The upper plate material can be aluminum, but not limited to aluminum, and can also be steel, copper, a metal material with high thermal conductivity, and the like.

In the above battery pack, when the cooling powers of the first cooling plate and the second cooling plate are sufficient, the flat heat pipe may be replaced with a buffer heat insulating material having no heat absorbing function, which may be determined according to the usage requirement.

The structure of the battery module 10 in this embodiment is the same as that of the battery module 10, and can bring about the same or similar technical effects, and details are not repeated herein, and specific reference can be made to the description of the battery module 10.

In conclusion, the battery pack that this disclosed embodiment provided can cool off battery module 10 fast through the setting of first liquid cold drawing 20 and second liquid cold drawing 40, simultaneously because first liquid cold drawing 20 uses with heat transfer plate 2's cooperation, can be fast with the first liquid cold drawing 20 of the heat conduction of 1 big face of battery unit to bottom, have samming effect and quick refrigerated effect, can effectively satisfy the cooling demand under the higher and high rate of battery module 10 energy density quick charge condition, guarantee product reliability and security.

The embodiment of the disclosure further provides a vehicle including foretell battery package, has samming effect and quick refrigerated effect, can effectively satisfy the cooling demand under the higher and high magnification of battery module 10 energy density fills the condition soon, guarantees product reliability and security.

The structure of the battery pack in this embodiment is the same as that of the battery pack described above, and the same or similar technical effects can be brought.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are 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 apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which will enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery module, comprising:

the heat exchange plate comprises a first plate body and a second plate body connected with the first plate body, the first plate body is located between any two adjacent first surfaces of the battery units, and the second plate body is located on the second surface of the battery units.

2. The battery module according to claim 1, wherein the heat exchange plate comprises a flat plate heat pipe.

3. The battery module according to claim 1, wherein a first channel is disposed inside the first plate body, and a cooling liquid is disposed in the first channel;

4. The battery module according to claim 1, wherein a second channel is disposed inside the first plate, a heat pipe is disposed in the second channel, and at least one end of the heat pipe is disposed adjacent to the second plate.

5. The battery module according to claim 4, wherein the second channel comprises an evaporation channel and a condensation channel, the condensation channel being disposed adjacent to and parallel to the second plate body; the evaporation channel is communicated with the condensation channel, and the evaporation channel extends towards one end, far away from the second plate body, of the first plate body.

6. A battery pack, comprising: the battery module according to any one of claims 1 to 5.

7. The battery pack of claim 6, further comprising a first liquid cooled plate and a second liquid cooled plate, wherein the first liquid cooled plate is located on one side of the battery module and is in contact with a second plate of the battery module; the second liquid cooling plate is in contact with the battery module, and the second liquid cooling plate is far away from the first liquid cooling plate.

8. The battery pack of claim 7, wherein the first liquid cold plate has a first flow channel disposed thereon, the first flow channel having a first inlet and a first outlet;

9. The battery pack of claim 7 or 8, wherein the first liquid-cooled plate is connected to the second plate by a first thermally conductive adhesive;

10. The battery pack of claim 7 or 8, further comprising a case, wherein the first hydraulic cooling plate, the battery module, and the second hydraulic cooling plate are sequentially mounted in the case.

11. A vehicle, characterized by comprising: the battery pack according to any one of claims 6 to 10.