CN212461863U

CN212461863U - Battery pack and vehicle

Info

Publication number: CN212461863U
Application number: CN202021075630.2U
Authority: CN
Inventors: 任杰
Original assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Current assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-02-02
Anticipated expiration: 2030-06-11

Abstract

The utility model relates to a battery technology field provides a battery package and vehicle, and the battery package is including framework, cooling plate and supporting beam group, and the framework has the first runner that supplies the coolant circulation of cooling plate, and a supporting beam group has the second runner that supplies the coolant circulation of cooling plate, and first runner and second runner all hold the chamber with the coolant of cooling plate and are linked together. The cooling plate carries out the pipeline through the inner space of framework and bracing beam group inner space and lays to, form the circulating pipeline system, thereby reduced the pipeline of cooling plate to the occupation rate of accommodation space, vacate the space for the battery module, under the same volume, the energy density of battery package is higher. Simultaneously, after the cooling medium in the cooling plate finishes the heat exchange with the battery module, can also utilize framework and supporting beam group to dispel the heat fast, therefore, can take away more work heats of battery module, have good heat exchange efficiency.

Description

Battery pack and vehicle

Technical Field

The utility model relates to a battery technology field especially provides a battery package and have vehicle of this battery package.

Background

At present, electric vehicles are widely used in daily travel life of people, and for electric vehicles, a battery pack is an important energy source. Most liquid cooling schemes are adopted to cool the battery pack in the current market. The liquid cooling scheme has comparatively obvious advantage than other heat dissipation schemes, and its heat exchange efficiency is high, can last heat transfer etc..

Generally, above-mentioned liquid cooling scheme is for setting up a cooling plate in the bottom of battery box to, set up the inlet channel and the outlet conduit of supply cooling plate in the battery box, like this, though can carry out cooling to the battery module, inlet and outlet conduit occupy not few spaces, reduce the energy density of battery package, and, the unable timely heat dissipation of coolant after the heat exchange leads to the heat exchange efficiency low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery package aims at solving the current battery package energy density low and the not good problem of heat exchange efficiency.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a battery pack, includes the framework, locate the cooling plate in the framework and locate the cooling plate on and be located the bracing beam group in the framework, bracing beam group link in the inside wall of framework, the framework has the first runner that supplies the coolant circulation of cooling plate, a bracing beam group has the second runner that supplies the coolant circulation of cooling plate, first runner and second runner all hold the chamber with the coolant of cooling plate and are linked together. The cooling medium may be one or more of gas, liquid, and powder, and is not limited herein.

The utility model has the advantages that: the utility model provides a battery pack for carry out the cooling plate of heat exchange with the battery module, carry out the pipeline through the inner space of framework and bracing beam group inner space and lay, and, form the pipe-line system that the circulation flows, specifically, in the cooling medium in the cooling plate can flow in the first runner of framework, and in the second runner of bracing beam group, thereby reduced the pipeline of cooling plate to the occupancy of accommodation space, vacate the space for the battery module, under the same volume, the energy density of battery pack is higher. Simultaneously, after the cooling medium in the cooling plate finishes the heat exchange with the battery module, can also utilize framework and supporting beam group to dispel the heat fast, therefore, can take away more work heats of battery module, have good heat exchange efficiency.

In one embodiment, the frame body comprises two transverse frames and two longitudinal frames enclosing the two transverse frames to form a closed structure, a first flow channel is arranged in each longitudinal frame and/or each transverse frame, the supporting beam group comprises a plurality of transverse beams arranged transversely and at intervals, each transverse beam is connected to the longitudinal frame, and a second flow channel is arranged in each transverse beam.

By adopting the technical scheme, the cooling medium in the cooling plate flows into the second flow channels of the cross beams and flows out of the first flow channels of the two longitudinal frames to form the circulating liquid cooling pipeline system.

In one embodiment, the frame body comprises two transverse frames and two longitudinal frames enclosing the two transverse frames to form a closed structure, a first flow channel is arranged in each transverse frame and/or each longitudinal frame, the supporting beam group comprises a plurality of longitudinal beams arranged longitudinally and at intervals, each longitudinal beam is connected to the transverse frames, and a second flow channel is arranged in each longitudinal beam.

By adopting the technical scheme, the cooling medium in the cooling plate flows into the second flow channels of the longitudinal beams and then flows out of the first flow channels of the two transverse frames and the two longitudinal frames to form another circulating liquid cooling pipeline system.

In one embodiment, the frame body comprises two transverse frames and two longitudinal frames enclosing the two transverse frames to form a closed structure, a first flow channel is arranged in each transverse frame and/or each longitudinal frame, the supporting beam group comprises a plurality of longitudinal beams arranged longitudinally and at intervals and a plurality of transverse beams arranged transversely and at intervals, the transverse beams and the longitudinal beams are arranged in a crossed manner, each longitudinal beam is connected to the transverse frame, each transverse beam is connected to the longitudinal frame, and second flow channels are arranged in the longitudinal beams and in the transverse beams.

By adopting the technical scheme, the cooling medium in the cooling plate flows into the second flow channels of the longitudinal beams and the transverse beams and then flows out of the first flow channels of the two transverse frames and the two longitudinal frames to form another circulating liquid cooling pipeline system.

In one embodiment, the battery pack further comprises a first heat dissipation structure arranged on the transverse frame and/or the longitudinal frame.

By adopting the technical scheme, the cooling medium in the first flow channel radiates heat outwards through the first heat radiation structures on the transverse frame and/or the longitudinal frame, so that the heat radiation efficiency is further improved.

In one embodiment, the first heat dissipation structure is a first accommodating cavity arranged in the transverse frame and/or the longitudinal frame and a first phase change material filled in the first accommodating cavity, and the first accommodating cavity is adjacent to the first flow channel; or the first heat dissipation structure is formed by a plurality of first heat dissipation fins formed by outwards protruding the transverse frame and/or the longitudinal frame.

By adopting the technical scheme, the first phase-change material transfers the heat in the first flow channel into the first accommodating cavity, and then the heat is transferred to the outer part of the transverse frame and/or the outer part of the longitudinal frame from the first accommodating cavity, so that higher heat dissipation efficiency is obtained.

In one embodiment, the battery pack further comprises a second heat dissipation structure disposed on the support beam set.

By adopting the technical scheme, the cooling medium in the second flow channel is radiated outwards through the second radiating structure on the supporting beam group, and the radiating efficiency is further improved.

In one embodiment, the second heat dissipation structure is a second accommodating cavity arranged in the support beam group and a second phase change material filled in the second accommodating cavity, and the second accommodating cavity is adjacent to the second flow channel; or the second heat radiation structure is formed by a plurality of second heat radiation fins formed by the outward protruding support beam group.

By adopting the technical scheme, specifically, the plurality of second radiating fins are utilized for radiating, so that higher radiating efficiency is obtained.

In one embodiment, the first flow channel comprises a plurality of first branch flow channels disposed within the frame; alternatively, the second flow passage comprises a plurality of second branch flow passages provided in the support beam group.

By adopting the technical scheme, the contact area of the cooling plate and the frame body is increased by each first branch flow channel, the heat dissipation efficiency is further improved, the contact area of the cooling plate and the supporting beam group is increased by each second branch flow channel, and the heat dissipation efficiency is further improved.

The utility model also provides a vehicle, including foretell battery package.

The utility model has the advantages that: the utility model provides a vehicle, on the basis that has above-mentioned battery package, the continuation of the journey mileage of vehicle is longer, and the security is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a cross-sectional view of a battery pack according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a battery pack according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a battery pack according to a second embodiment of the present invention;

fig. 5 is a cross-sectional view of a battery pack according to a third embodiment of the present invention;

fig. 6 is another cross-sectional view of a battery pack according to an embodiment of the present invention;

fig. 7 is another cross-sectional view of a battery pack according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

the battery pack 100, the frame 10, the cooling plate 20, the support beam group 30, the first flow 10a, the second flow 30a, the transverse frame 11, the longitudinal frame 12, the transverse beam 31, the longitudinal beam 32, the first heat dissipation structure 41, the first accommodating cavity 411, the first phase change material 412, the second heat dissipation structure 42, the second accommodating cavity 421, the second phase change material 422, the first branch flow 10a1, and the second branch flow 30a 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being 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", "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.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 according to specific situations by those skilled in the art.

Referring to fig. 1 and 2, a battery pack 100 of the present application includes a frame 10, a cooling plate 20 disposed in the frame 10, and a support beam set 30 disposed on the cooling plate 20 and located in the frame 10, wherein the support beam set 30 is connected to an inner side wall of the frame 10, the frame 10 has a first flow channel 10a through which a cooling medium of the cooling plate 20 flows, the support beam set 30 has a second flow channel 30a through which the cooling medium of the cooling plate 20 flows, and both the first flow channel 10a and the second flow channel 30a are communicated with a cooling medium accommodating cavity of the cooling plate 20. Here, the cooling plate 20 may be connected to the frame 10 and the supporting beam set 30 through a conduit, or may be connected through an integrated molding manner, that is, the cooling plate 20, the first flow channel 10a, and the second flow channel 30a share the same water outlet and water inlet, and the cooling medium can circulate through the cooling plate 20, the frame 10, and the supporting beam set 30.

The utility model provides a battery package 100 for carry out the cooling plate 20 of heat exchange with the battery module, the inner space through framework 10 carries out the pipeline with bracing beam group 30 inner space and lays, and, form the pipe-line system that the circulation flows, specifically, in the cooling medium among the cooling plate 20 can flow in framework 10's first runner 10a, and in bracing beam group 30's second runner 30a, thereby the pipeline that has reduced cooling plate 20 is to the occupancy of accommodation space, vacate the space for the battery module, under the same volume, battery package 100's energy density is higher. Meanwhile, after the cooling medium in the cooling plate 20 exchanges heat with the battery module, the frame 10 and the support beam set 30 can be used for fast heat dissipation, because the frame 10 and the support beam set 30 are made of metal such as aluminum alloy, the heat conduction effect is good, and therefore more working heat of the battery module can be taken away, and the heat exchange efficiency is good.

Example one

Referring to fig. 2 and fig. 3, in the present embodiment, the frame 10 includes two transverse frames 11 and two longitudinal frames 12 enclosing the two transverse frames 11 to form a closed structure. The first flow channels 10a are arranged in each longitudinal frame 12 and/or each transverse frame 11, the supporting beam group 30 comprises a plurality of transverse beams 31 which are transversely arranged at intervals, each transverse beam 31 is connected to the longitudinal frame 12, and the second flow channels 30a are arranged in each transverse beam 31. Here, the second flow path 30a communicates with the coolant inlet, and the first flow path 10a communicates with the coolant outlet, i.e., the coolant flow path is: the second flow channel 30a, the cooling plate 20, and the first flow channel 10a, and circulates. The longitudinal frames 12 and/or the transverse frames 11, the cross beam 31 and the cooling plate 20 can play a role in cooling and heat dissipation for the battery module. Of course, the first flow channel 10a is connected to the inlet of the cooling medium and the second flow channel 30a is connected to the outlet of the cooling medium according to the actual use situation.

Example two

Referring to fig. 2 and 4, in the present embodiment, the frame body 10 includes two transverse frames 11 and two longitudinal frames 12 enclosing the two transverse frames 11 to form a closed structure, a first flow channel 10a is disposed in each transverse frame 11 and/or each longitudinal frame 12, the support beam set 30 includes a plurality of longitudinal beams 32 disposed longitudinally and at intervals, each longitudinal beam 32 is connected to the transverse frame 11, and a second flow channel 30a is disposed in each longitudinal beam 32. Here, the second flow path 30a communicates with the coolant inlet, and the first flow path 10a communicates with the coolant outlet, i.e., the coolant flow path is: the second flow channel 30a, the cooling plate 20, and the first flow channel 10a, and circulates. The longitudinal frames 12 and/or the transverse frames 11, the longitudinal beams 32 and the cooling plates 20 can play a role in cooling and heat dissipation for the battery module. Of course, the first flow channel 10a is connected to the inlet of the cooling medium and the second flow channel 30a is connected to the outlet of the cooling medium according to the actual use situation.

EXAMPLE III

Referring to fig. 2 and 5, in the present embodiment, the frame body 10 includes two transverse frames 11 and two longitudinal frames 12 enclosing the two transverse frames 11 to form a closed structure, first flow channels 10a are disposed in the transverse frames 11 and/or the longitudinal frames 12, the supporting beam group 30 includes a plurality of longitudinal beams 32 disposed longitudinally and at intervals and a plurality of transverse beams 31 disposed transversely and at intervals, the transverse beams 31 and the longitudinal beams 32 are disposed crosswise, each longitudinal beam 32 is connected to the transverse frames 11, each transverse beam 31 is connected to the longitudinal frames 12, and second flow channels 30a are disposed in the longitudinal beams 32 and in the transverse beams 31. Here, the second flow path 30a communicates with the coolant inlet, and the first flow path 10a communicates with the coolant outlet, i.e., the coolant flow path is: the second flow channel 30a, the cooling plate 20 and the first flow channel 10a circularly flow, and at this time, the flowing distance of the cooling medium in the second flow channel 30a is increased, and the heat dissipation effect is further improved. Of course, the first flow channel 10a is connected to the inlet of the cooling medium and the second flow channel 30a is connected to the outlet of the cooling medium according to the actual use situation.

Referring to fig. 1, in an embodiment, the battery pack 100 further includes a first heat dissipation structure 41 disposed on the transverse frame 11 and/or the longitudinal frame 12. Here, the cooling medium in the first flow channel 10a radiates heat outwards through the first heat radiation structures 41 on the transverse frames 11 and/or the longitudinal frames 12, so that the heat radiation efficiency is further improved. For example, the first heat dissipation structure 41 may be disposed on the inner sidewall and/or the outer sidewall of the transverse frame 11, and may be disposed on the inner sidewall and/or the outer sidewall of the longitudinal frame.

Specifically, referring to fig. 1, the first heat dissipation structure 41 is formed by protruding the transverse frame 11 and/or the longitudinal frame 12 to form a plurality of first heat dissipation fins. Through adopting above-mentioned technical scheme, utilize a plurality of first radiating fin to dispel the heat to obtain higher radiating efficiency.

Alternatively, referring to fig. 6, in another embodiment, the first heat dissipation structure 41 is provided with a first receiving cavity 411 in the transverse frame 11 and/or the longitudinal frame 12, the first receiving cavity 411 is adjacent to the first flow channel 10a, and the first receiving cavity 411 is filled with the first phase change material 412. The first phase change material 412 transfers heat due to the change of the solid-liquid state, for example, the first phase change material 412 is a molten salt or paraffin. The first phase change material 412 is solid at normal temperature, the first phase change material 412 close to the first flow channel 10a liquefies and absorbs heat due to temperature rise, that is, absorbs heat in the cooling medium, and the heat is transferred in a direction away from the first flow channel 10a, and the first phase change material 412 in a liquid state transmits the heat to the outside and returns to a solid state.

Referring to fig. 1, in one embodiment, the battery pack 100 further includes a second heat dissipation structure 42 disposed on the support beam assembly 30. By adopting the above technical scheme, the cooling medium in the second flow channel 30a is radiated outwards through the second heat radiation structure 42 on the support beam group 30, and the heat radiation efficiency is further improved. For example, the first heat dissipation structure 41 may be disposed on the inner sidewall and/or the outer sidewall of the cross beam 31, and may be disposed on the inner sidewall and/or the outer sidewall of the longitudinal beam 32.

Specifically, referring to fig. 1, the second heat dissipation structure 42 is formed by a plurality of second heat dissipation fins protruding outwards from the support beam set 30. Here, the second heat dissipation structure 42 may be disposed on each cross beam 31 and/or each longitudinal beam 32. Through adopting above-mentioned technical scheme, utilize a plurality of second radiating fin to dispel the heat to obtain higher radiating efficiency.

Alternatively, referring to fig. 7, in another embodiment, the second heat dissipation structure 42 is provided with a second receiving cavity 421 in the supporting beam set 30, the second receiving cavity 421 is adjacent to the second flow channel 30a, and the second receiving cavity 421 is filled with the second phase change material 422. The heat transfer process is not described in detail here.

Referring to fig. 1, in one embodiment, the first flow channel 10a includes a plurality of first branch flow channels 10a1 disposed in the frame 10. Specifically, each first branch flow channel 10a1 is provided along the height direction or the width direction of the frame 10, and the contact area between the cooling plate 20 and the frame 10 is increased, thereby further improving the heat dissipation efficiency. Alternatively, the second runner 30a includes a plurality of second branch runners 30a1 provided in the support beam group 30. Specifically, each first branch flow is provided in the height direction or the width direction of the support beam group 30. Each of the second branch flow paths 30a1 increases the contact area between the cooling plate 20 and the support beam group 30, thereby further improving the heat dissipation efficiency.

The utility model also provides a vehicle, including foretell battery package 100.

The utility model provides a vehicle, on the basis that has above-mentioned battery package 100, the continuation of the journey mileage of vehicle is longer, and the security is higher.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a battery pack, includes the framework, locates cooling plate in the framework and locating on the cooling plate and be located bracing beam group in the framework, bracing beam group connect in the inside wall of framework, its characterized in that: the frame body is provided with a first flow channel for the cooling medium of the cooling plate to circulate, the supporting beam group is provided with a second flow channel for the cooling medium of the cooling plate to circulate, and the first flow channel and the second flow channel are communicated with the cooling medium accommodating cavity of the cooling plate.

2. The battery pack according to claim 1, wherein: the frame body comprises two transverse frames and two longitudinal frames which enclose into a closed structure with the two transverse frames, the first flow channels are arranged in the longitudinal frames and/or in the transverse frames, the supporting beam group comprises a plurality of transverse beams which are transversely arranged at intervals, the transverse beams are connected to the longitudinal frames, and the second flow channels are arranged in the transverse beams.

3. The battery pack according to claim 1, wherein: the frame body comprises two transverse frames and two longitudinal frames which enclose the two transverse frames to form a closed structure, first flow channels are arranged in the transverse frames and the longitudinal frames, the supporting beam group comprises a plurality of longitudinal beams which are longitudinally arranged at intervals, the longitudinal beams are connected to the transverse frames, and second flow channels are arranged in the longitudinal beams.

4. The battery pack according to claim 1, wherein: the frame body comprises two transverse frames and two longitudinal frames enclosing into a closed structure with the two transverse frames, first runners are arranged in the transverse frames and/or the longitudinal frames, the supporting beam group comprises a plurality of longitudinal beams arranged longitudinally and at intervals and a plurality of transverse beams arranged transversely and at intervals, the transverse beams and the longitudinal beams are arranged in a crossed mode, the longitudinal beams are connected to the transverse frames, the transverse beams are connected to the longitudinal frames, and second runners are arranged in the longitudinal beams and the transverse beams.

5. The battery pack according to any one of claims 2 to 4, wherein: the battery pack further comprises a first heat dissipation structure arranged on the transverse frame and/or the longitudinal frame.

6. The battery pack according to claim 5, wherein: the first heat dissipation structure is a first accommodating cavity arranged in the transverse frame and/or the longitudinal frame and a first phase change material filled in the first accommodating cavity, and the first accommodating cavity is adjacent to the first flow channel; or, the first heat dissipation structure is formed by the transverse frame and/or the longitudinal frame protruding outwards to form a plurality of first heat dissipation fins.

7. The battery pack according to claim 1, wherein: the battery pack further comprises a second heat dissipation structure arranged on the support beam group.

8. The battery pack according to claim 7, wherein: the second heat dissipation structure is a second accommodating cavity arranged in the support beam group and a second phase change material filled in the second accommodating cavity, and the second accommodating cavity is adjacent to the second flow channel; or, the second heat dissipation structure is formed by a plurality of second heat dissipation fins formed by the outward protruding extension of the supporting beam set.

9. The battery pack according to claim 1, wherein: the first flow channel comprises a plurality of first branch flow channels arranged in the frame body; or the second flow channel comprises a plurality of second branch flow channels arranged in the support beam group.

10. A vehicle, characterized in that: comprising a battery pack according to any one of claims 1 to 9.