CN218975583U - Heat exchange plate, battery pack and vehicle - Google Patents

Abstract

The utility model discloses a heat exchange plate, a battery pack and a vehicle, wherein the heat exchange plate comprises a heat exchange piece and a support piece, at least one cavity is arranged in the heat exchange piece, and the cavity is provided with a first cavity wall and a second cavity wall which are oppositely arranged; the support is arranged in the cavity and is configured to elastically deform under the action of pressure so that the distance between the first cavity wall and the second cavity wall is reduced, the support comprises a first support rib and a second support rib which are connected with each other, the first support rib is obliquely arranged relative to the first cavity wall and the second cavity wall, and the second support rib is obliquely arranged relative to the first cavity wall and the second cavity wall. According to the heat exchange plate, the heat exchange plate can absorb the expansion force of the single battery, and the cycle life of the battery pack is prolonged.

Description

Heat exchange plate, battery pack and vehicle

Technical Field

The utility model relates to the technical field of batteries, in particular to a heat exchange plate, a battery pack and a vehicle.

Background

In the related art, a heat exchange plate is generally used for cooling the single battery; however, because the heat exchange plate is unreasonable in design, when the battery cell expands, the heat exchange plate is difficult to deform correspondingly, and the heat exchange plate can squeeze the battery cell at the moment, so that the service life of the battery cell is shortened, the contact area between the heat exchange plate and the battery cell is reduced, and the cooling performance of the cooling plate is reduced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the heat exchange plate which can absorb the expansion force of the single battery, improve the cycle life of the battery pack and improve the heat exchange performance of the heat exchange plate.

The utility model further provides a battery pack with the heat exchange plate.

The utility model further provides a vehicle with the battery pack.

According to an embodiment of the first aspect of the present utility model, a battery heat exchange member includes: the heat exchange piece is internally provided with at least one cavity, and the cavity is provided with a first cavity wall and a second cavity wall which are oppositely arranged; the support piece is arranged in the cavity and is configured to be elastically deformed under the action of pressure so that the distance between the first cavity wall and the second cavity wall is reduced, the support piece comprises a first support rib and a second support rib which are connected with each other, the first support rib is obliquely arranged relative to the first cavity wall and the second cavity wall, and the second support rib is obliquely arranged relative to the first cavity wall and the second cavity wall.

According to the heat exchange plate provided by the embodiment of the utility model, the support piece is arranged to support the first cavity wall and the second cavity wall, the support piece comprises the first support rib and the second support rib, the first support rib is obliquely arranged relative to the first cavity wall and the second cavity wall, and the second support rib is obliquely arranged relative to the first cavity wall and the second cavity wall, so that the heat exchange plate has good elastic deformation capacity and elastic recovery capacity to absorb the expansion force of the single battery, the heat exchange plate can keep a good heat exchange state with the single battery, the single battery is ensured to be in a proper temperature range, and the heat exchange plate can be prevented from excessively extruding the single battery when the single battery expands, thereby being beneficial to prolonging the cycle life of the single battery.

In some embodiments, the support further comprises: the connecting ribs are arranged at intervals with the first cavity wall and the second cavity wall respectively, and the first supporting ribs and the second supporting ribs are connected with the connecting ribs.

In some embodiments, the first and second support ribs are disposed obliquely with respect to the connection rib, respectively.

In some embodiments, the connecting ribs are disposed parallel to the first and second chamber walls.

In some embodiments, the first supporting ribs and the second supporting ribs are respectively multiple, the multiple first supporting ribs are arranged at intervals along the width direction of the heat exchange piece, each first supporting rib is connected with the first cavity wall and the connecting ribs, the multiple second supporting ribs are arranged at intervals along the width direction of the heat exchange piece, and each second supporting rib is connected with the second cavity wall and the connecting ribs.

In some embodiments, two of the plurality of first supporting ribs are first ribs, two of the first ribs are respectively connected with two ends of the connecting rib in the width direction of the heat exchange member, two of the plurality of second supporting ribs are second ribs, and two of the second ribs are respectively connected with two ends of the connecting rib in the width direction of the heat exchange member.

In some embodiments, in the thickness direction of the heat exchange member, two of the first ribs extend from the connection rib toward a direction away from each other to the first chamber wall, and two of the second ribs extend from the connection rib toward a direction away from each other to the second chamber wall.

In some embodiments, the angle between the first rib and the second rib at the same end of the connecting rib is alpha, 30 deg. alpha. 60 deg..

In some embodiments, the plurality of support members are arranged at intervals along the width direction of the heat exchange member, and each support member extends along the length direction of the heat exchange member.

In some embodiments, the heat exchange plate further comprises: the limiting assembly is arranged in the cavity and used for limiting the minimum distance between the first cavity wall and the second cavity wall, the limiting assembly comprises a first limiting piece and/or a second limiting piece, the first limiting piece is arranged in the first cavity wall and is spaced from the second cavity wall by a first preset distance, and the second fiber piece is arranged in the second cavity wall and is spaced from the first cavity wall by a second preset distance.

In some embodiments, the spacing component and the support member are respectively a plurality of, and a plurality of spacing components and a plurality of support members are alternately arranged along the width direction of the heat exchange member.

In some embodiments, the spacing assembly includes a first spacing member and a second spacing member, the first spacing member and the second spacing member being disposed opposite each other in a thickness direction of the heat exchange member.

According to a second aspect of the utility model, a battery pack comprises a single battery and the heat exchange plate according to the first aspect of the utility model, wherein at least one of two sides of the thickness of the heat exchange plate is provided with the single battery, and the heat exchange plate is in heat conduction connection with the single battery.

According to the battery pack provided by the embodiment of the utility model, the heat exchange plate can be used for prolonging the cycle life of the battery pack.

A vehicle according to an embodiment of a third aspect of the present utility model includes a battery pack according to the embodiment of the above second aspect of the present utility model.

According to the vehicle provided by the embodiment of the utility model, the battery pack is adopted, so that the times of maintaining or replacing the battery pack are reduced, and the use cost of the vehicle can be saved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of a battery pack according to an embodiment of the present utility model;

fig. 2 is an exploded view of the battery pack shown in fig. 1;

FIG. 3 is a partial schematic view of the battery pack shown in FIG. 1;

FIG. 4 is another partial schematic view of the battery pack shown in FIG. 3;

FIG. 5 is a schematic view of the heat exchanger plate shown in FIG. 3;

fig. 6 is a sectional view of the heat exchange plate shown in fig. 5;

fig. 7 is another cross-sectional view of the heat exchanger plate shown in fig. 5;

fig. 8 is an enlarged view of the portion a shown in fig. 7;

fig. 9 is a schematic view of a heat exchanger plate according to another embodiment of the present utility model.

Reference numerals:

battery pack 200, unit cell 101, positive electrode column 1011, negative electrode column 1012, tray assembly 102, mounting groove 102a, battery tray 1021, expansion beam 1022, case lid 103,

A heat exchange plate 100,

A heat exchange member 1, a cavity 1a, a flow passage 1b, a first cavity wall 11, a second cavity wall 12, an inlet 13, an outlet 14,

A supporting member 2, a first rib 2a, a second rib 2b, a first supporting rib 21, a second supporting rib 22, a connecting rib 23,

A limiting assembly 3, a first limiting piece 31 and a second limiting piece 32.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

Next, a heat exchange plate 100 according to an embodiment of the present utility model is described with reference to the accompanying drawings.

As shown in fig. 3-7, the heat exchange plate 100 comprises a heat exchange member 1, wherein at least one cavity 1a is arranged in the heat exchange member 1, and a heat exchange medium is suitable to flow in the cavity 1 a; the cavity 1a has a first cavity wall 11 and a second cavity wall 12 disposed opposite to each other, the cavity 1a being formed between the first cavity wall 11 and the second cavity wall 12, at least one of the first cavity wall 11 and the second cavity wall 12 being for heat-conductive engagement with the unit cell 101 to effect heat exchange of the heat exchange medium with the unit cell 101.

The heat exchange plate 100 further comprises a support member 2, the support member 2 is arranged in the cavity 1a, the support member 2 is configured to elastically deform under the action of pressure so that the distance between the first cavity wall 11 and the second cavity wall 12 is reduced, and the heat exchange plate 100 can avoid a certain expansion space, so that the heat exchange plate 100 can absorb the expansion deformation of the single battery 101, and the single battery 101 is prevented from being damaged due to the mutual extrusion between the heat exchange plate 100 and the single battery 101 caused by the expansion deformation of the single battery 101.

Therefore, when the heat exchange plate 100 is used in the battery pack 200, the heat exchange plate 100 can adapt to expansion deformation of the single battery 101, and meanwhile, the heat exchange plate 100 can always keep a heat exchange state with the single battery 101, for example, the heat exchange piece 1 can always keep a heat exchange state with the single battery 101, so that a heat exchange effect between the heat exchange plate 100 and the single battery 101 is ensured, and then the cycle life of the single battery 100 is ensured.

As shown in fig. 5 to 9, the support member 2 includes a first support rib 21 and a second support rib 22 connected to each other, the first support rib 21 being disposed obliquely with respect to both the first chamber wall 11 and the second chamber wall 12, and the second support rib 22 being disposed obliquely with respect to both the first chamber wall 11 and the second chamber wall 12, so as to appropriately weaken the supporting action of the support member 2 on the first chamber wall 11 and the second chamber wall 12, and to enhance the elastic deformability and the elastic recovery capability of the heat exchange plate 100.

It will be appreciated that the first support rib 21 and the second support rib 22 may be directly connected or may be indirectly connected through other members (e.g., a connecting rib 23 described later). The first support rib 21 may be connected between the second support rib 22 and the first chamber wall 11, and the second support rib 22 is connected between the first support rib 21 and the second chamber wall 12; alternatively, the second support rib 21 may be connected between the first support rib 21 and the first chamber wall 11, and the first support rib 21 is connected between the second support rib 22 and the second chamber wall 12.

For example, in the examples of fig. 7 and 9, the first support rib 21 is connected between the second support rib 22 and the first cavity wall 11, the second support rib 22 is connected between the first support rib 21 and the second cavity wall 12, the angle at the connection position of the first cavity wall 11 and the first support rib 21 is formed to be an acute angle or an obtuse angle, the angle at the connection position of the second cavity wall 12 and the second support rib 22 is formed to be an acute angle or an obtuse angle, so that the supporting effect of the first support rib 21 and the second support rib 22 on the first cavity wall 11 and the second cavity wall 12 is properly weakened, and the magnitude of the angle at the connection position of the first cavity wall 11 and the first support rib 21 and/or the magnitude of the angle at the connection position of the second cavity wall 12 and the second support rib 22 is changed when the heat exchange member 1 is subjected to pressure, so that the first cavity wall 11 and the second cavity wall 12 are separated from each other at the connection position of the support rib 2 if the pressure is reduced or withdrawn, so that the elastic restoring force of the first support rib 21 and the second cavity wall 12 can be well deformed.

Therefore, through the cooperation of the first supporting ribs 21 and the second supporting ribs 22, the supporting piece 2 has good deformation capability and elastic restoring force, so that the heat exchange plate 100 can deform to enable the space between the first cavity wall 11 and the second cavity wall 12 to avoid a certain expansion space, the expansion force of the single battery 101 is absorbed, and the heat exchange plate 100 can be prevented from excessively extruding the single battery 101 when the single battery 101 expands; meanwhile, the support 2 has good elastic restoring force, so that the deformed heat exchange plate 100 has a tendency to restore an initial shape, and the first cavity wall 11 and the second cavity wall 12 have a movement tendency to restore the initial shape, so that the heat exchange plate 100 and the single battery 101 maintain a good heat exchange state, and the single battery 101 is kept in a proper temperature range, thereby prolonging the cycle life of the battery pack 200.

It will be appreciated that the inclination directions of the plurality of first beads 21 are the same or different, and the inclination directions of the plurality of second beads 2 are the same or different.

In the description of the present application, the term "heat exchanger plate 100" is to be understood in a broad sense, as follows: 1. the heat exchange plate 100 may be used to cool the unit cells 101, and the heat exchange plate 100 may also be used to heat the unit cells 101; 2. the heat exchange plate 100 is used only for cooling the unit cells 101; 3. the heat exchange plate 100 is used only to heat the unit cells 101.

In the following description of the present application, the heat exchange plate 100 is used for cooling the unit cells 101 as an example, and other usage schemes of the heat exchange plate 100 will be easily understood by those skilled in the art after reading the following schemes.

For example, when the unit cell 101 is not subjected to expansion deformation, the heat exchange plate 100 may stop heat exchange with the unit cell 101; when the single battery 101 expands and deforms, the single battery 101 can extrude the heat exchange plate 100, the heat exchange piece 1 and the supporting piece 2 deform, so that the heat exchange plate 100 can absorb the expansion force of the single battery 101, the heat exchange plate 100 can avoid a certain expansion space for the single battery 101, the extrusion force of the heat exchange plate 100 and the single battery 101 caused by the expansion and deformation of the single battery 101 is reduced, and meanwhile, the heat exchange plate 100 deforms and has a trend of recovering to an initial shape, so that the heat exchange plate 100 and the single battery 101 always keep a good heat exchange state, for example, the heat exchange plate 100 and the single battery 101 always keep contact, and the cooling effect of the heat exchange plate 100 on the single battery 101 is guaranteed. Therefore, no matter whether the single battery 101 is subjected to expansion deformation, the heat exchange plate 100 can be well matched with the single battery 101, so that the cooling effect of the heat exchange plate 100 on the single battery 101 is ensured, the single battery 101 has a proper working temperature, and the cycle service life of the single battery 101 is prolonged.

Therefore, no matter whether the single battery 101 is subjected to expansion deformation, the heat exchange plate 100 can be well matched with the single battery 101 all the time, so that the cooling effect of the heat exchange plate 100 on the single battery 101 is ensured, the single battery 101 has a proper working temperature, and the cyclic service life of the single battery 101 is prolonged. For some technologies, the heat exchange plate can not effectively keep stopping heat exchange with the single cell after being extruded, so that a layer of air flow channel exists between the heat exchange plate and the single cell, and the heat exchange efficiency between the heat exchange plate and the single cell is lower.

Of course, the heat exchange plate 100 may also exchange heat with other components, not limited to the unit cell 101.

According to the heat exchange plate 100 of the embodiment of the utility model, the support 2 is provided to support the first cavity wall 11 and the second cavity wall 12, and the support 2 comprises the first support rib 21 and the second support rib 22, the first support rib 21 is obliquely arranged relative to the first wall 11 and the second cavity wall 12, and the second support rib 22 is obliquely arranged relative to the first cavity wall 11 and the second cavity wall 12, so that the heat exchange plate 100 has good elastic deformation capability and elastic recovery capability to absorb the expansion force of the single battery 101, the heat exchange plate 100 can maintain a good heat exchange state with the single battery 101 to ensure that the single battery 101 is in a proper temperature range, and the heat exchange plate 101 can be prevented from excessively extruding the single battery 101 when the single battery 100 expands, thereby being beneficial to improving the cycle life of the single battery 101.

In some embodiments, as shown in fig. 7, the support 2 further includes a connecting rib 23, where the connecting rib 23 is spaced from the first cavity wall 11 and the second cavity wall 12, respectively, and the first supporting rib 21 and the second supporting rib 22 are connected to the connecting rib 23, for example, the first supporting rib 21 connects the first cavity wall 11 and the connecting rib 23, the second supporting rib 22 connects the second cavity wall 12 and the connecting rib 23, or the second supporting rib 22 connects the first cavity wall 11 and the connecting rib 23, and the first supporting rib 21 connects the second cavity wall 12 and the connecting rib 23. Thereby, it is advantageous to properly enhance the elastic restoring ability of the support member 2, and ensure that the support member 2 is reliably pushed against the first cavity wall 11 and/or the second cavity wall 12, so that the heat exchange plate 100 is restored toward the initial state, thereby ensuring the heat exchange efficiency of the heat exchange plate 100 and the unit cells 101. In some embodiments, as shown in fig. 7, the first supporting rib 21 and the second supporting rib 22 are disposed obliquely with respect to the connecting rib 12, such that an included angle at a connection position of the first supporting rib 21 and the connecting rib 23 is an acute angle or an obtuse angle, and an included angle at a connection position of the second supporting rib 22 and the connecting rib 23 is an acute angle or an obtuse angle. Therefore, when the heat exchange piece 1 is subjected to pressure, the size of the included angle at the connection position of the first supporting rib 21 and the connecting rib 23 and/or the size of the included angle at the connection position of the second supporting rib 22 and the connecting rib 23 are changed, and the elastic deformation capacity and the elastic recovery capacity of the support piece 2 are further improved.

In some embodiments, as shown in fig. 7, the connection rib 23 is disposed in parallel with the first cavity wall 11 and the second cavity wall 12, and then the first support rib 21 is necessarily disposed obliquely with respect to one of the connection rib 23 and the first cavity wall 11 if the first support rib 21 is disposed obliquely with respect to the other of the connection rib 23 and the first cavity wall 11, and likewise the second support rib 22 is necessarily disposed obliquely with respect to the other of the connection rib 23 and the second cavity wall 12 if the second support rib 22 is disposed obliquely with respect to the other of the connection rib 23 and the second cavity wall 12. Therefore, the design requirements of the first supporting rib 21 and the second supporting rib 22 are convenient to simplify, meanwhile, the connecting rib 23 is prevented from occupying too much space of the cavity 1a in the thickness direction of the heat exchanger 1, the connecting rib 23 cannot interfere with the deformed first supporting rib 21 and second supporting rib 22, and the elastic deformation capacity of the heat exchange plate 100 is effectively guaranteed.

In some embodiments, as shown in fig. 7 and 9, the first supporting ribs 21 and the second supporting ribs 22 are respectively multiple, the multiple first supporting ribs 21 are arranged at intervals along the width direction of the heat exchange member 1, each first supporting rib 21 is connected with the first cavity wall 11 and the connecting rib 23, the multiple second supporting ribs 22 are arranged at intervals along the width direction of the heat exchange member 1, each second supporting rib 22 is connected with the second cavity wall 12 and the connecting rib 23, so as to ensure that the structure of the support member 2 is reliable, and the multiple first supporting ribs 21 and the multiple second supporting ribs 22 are caught on each other, so that the elastic deformability and the elastic recoverability of the heat exchange plate 100 are further improved.

In some embodiments, as shown in fig. 7 to 8, two of the plurality of first supporting ribs 21 are first ribs 2a, two first ribs 2a are respectively connected with two ends of the connecting rib 23 in the width direction of the heat exchange member 1, two of the plurality of second supporting ribs 22 are second ribs 2b, two second ribs 2b are respectively connected with two ends of the connecting rib 23 in the width direction of the heat exchange member 1, so that the supporting member 2 has elastic deformation capability and elastic restoring force, when the single battery 101 is expanded and deformed to press the heat exchange member 1, the two first ribs 2a and the two second ribs 2b are extruded to deform inwards in the thickness direction, so that the heat exchange plate 100 absorbs the expansion and deformation of the single battery 101, meanwhile, the supporting member 2 has elastic restoring force, and the two first ribs 2a and the two second ribs 2b have a tendency to restore to the initial shape, so that the supporting member 2 supports the cavity wall of the heat exchange member 1 to move towards the single battery 101, thereby enabling the heat exchange plate 100 to tightly abut against the single battery 101, further improving the heat exchange efficiency of the single battery 101 and realizing rapid cooling of the heat exchange between the single battery 101 and the single battery 101.

It will be appreciated that the number of first support ribs 21 is equal to or different from the number of second support ribs 22. For example, in the example of fig. 7, the first support rib 21 and the second support rib 22 are two. When the number of the first supporting ribs 21 is three or more, the remaining first supporting ribs 21 except for the two first ribs 2a are provided between the two first ribs 2 a; when the number of the second ribs 22 is three or more, the remaining second ribs 22 except for the two second ribs 2a are provided between the two second ribs 2 b.

In some embodiments, as shown in fig. 8, in the thickness direction of the heat exchange member 1, two first ribs 2a extend from the connection rib 23 to the first chamber wall 11 in a direction away from each other, and two second ribs 2b extend from the connection rib 23 to the second chamber wall 12 in a direction away from each other, so as to further enhance the elastic deformability and elastic recovery capability of the support member 2, while the distance between the connection positions of the adjacent two first support ribs 21 and the first chamber wall 11 is appropriately sized so as to reduce the influence of the deformation of the adjacent two first support ribs 21, and the distance between the connection positions of the adjacent two second support ribs 22 and the second chamber wall 12 is appropriately sized so as to reduce the influence of the deformation of the adjacent two second support ribs 22.

Of course, the present application is not limited thereto; in some embodiments, in the thickness direction of the heat exchange member 1, two first ribs 2a extend from the connecting rib 23 to the first chamber wall 11 in a direction toward each other, and two second ribs 2b extend from the connecting rib 23 to the second chamber wall 12 in a direction toward each other.

In some embodiments, as shown in fig. 8, the included angle between the first rib 2a and the second rib 2b at the same end of the connecting rib 23 is α,30 ° or more and 60 ° or less, so as to ensure that the support member 2 is more easily elastically deformed to absorb the expansion of the unit cell 100, and at the same time, the support member 2 can provide a sufficient elastic restoring force to the heat exchange member 1, so that the heat exchange member 1 always stops heat exchange with the unit cell 101.

Alternatively, α may be 30 °, 40 °, 45 °, 50 °, 60 °, or the like.

It will be appreciated that the angles between the two first ribs 2a and the connecting rib 23 may be equal or unequal, and the angles between the two second ribs 2b and the connecting rib 23 may be equal or unequal.

In some embodiments, as shown in fig. 6-7, the plurality of supporting members 2 are arranged at intervals along the width direction of the heat exchange member 1, the plurality of supporting members 2 are arranged between the first cavity wall 11 and the second cavity wall 12 at intervals along the width direction of the heat exchange member 1, each supporting member 2 extends along the length direction of the heat exchange member 1 so as to divide the cavity 1a into a plurality of flow channels 1b, the heat exchange medium flows in the flow channels 1b to exchange heat with the single battery 101 through the heat exchange member 1, the heat exchange area of the heat exchange member 1 and the heat exchange medium is facilitated to be improved, the supporting members 2 are connected with the first cavity wall 11 and the second cavity wall 12, the overall structural stability of the heat exchange member 1 is improved, and meanwhile, the plurality of supporting members 2 can provide relatively uniform elastic restoring force for the heat exchange member 1 in the width direction, and the heat exchange area of the heat exchange member 1 and the single battery 101 is facilitated to be improved.

Wherein, the thickness of the first supporting rib 21, the thickness of the second supporting rib 22 and the thickness of the connecting rib 23 are smaller than the thickness of the first cavity wall 11 and the thickness of the second cavity wall 12, so as to further ensure the elastic deformability of the supporting member 2, so that the supporting member 2 is easier to deform.

In some embodiments, as shown in fig. 5, the heat exchange member 1 is formed with an inlet 13 and an outlet 14, the inlet 13 and the outlet 14 are disposed at opposite ends of the length of the heat exchange member 1, and the heat exchange medium flows into the cavity 1a from the inlet 13 and flows out of the cavity 1a from the outlet 14, so that the circulation of the heat exchange medium is realized to continuously exchange heat with the unit cells 101.

In some embodiments, the plurality of cavities 1a are sequentially arranged along the thickness direction of the heat exchange member 1, two adjacent cavities 1a are connected in series to form a cavity group, the outlet end of one cavity 1a is communicated with the inlet end of the other cavity 1a, so that the heat exchange medium sequentially flows through the two cavities 1a of the cavity group, the cavity group is provided with an inlet and an outlet at the same end of the heat exchange member 1 in the length direction, the inlet is formed in one cavity 1a of the cavity group, and the outlet is formed in the other cavity 1a of the same cavity group, thereby being beneficial to improving the space utilization of the battery pack 200, and simultaneously, when the subsequent inlet and outlet are connected with the communication pipeline, only one end of the heat exchange member 1 is required to be operated, so that the connection of the inlet and the outlet with the communication pipeline is facilitated, and meanwhile, the heat exchange medium flow can be increased to a certain extent, and the heat exchange efficiency between the heat exchange plate 100 and the single battery 101 is improved.

In addition, since each cavity 1a is provided with the supporting members 2, respectively, the supporting members 2 of the heat exchange plate 100 are more, and the heat exchange plate 100 is more easily deformed during the expansion of the unit cells 101, so that the heat exchange plate 100 and the unit cells 101 are synchronously deformed.

It will be appreciated that in the two cavities 1a of the cavity group, the first cavity wall 11 of one of the cavities 1a is the same cavity wall as the second cavity wall 12 of the other cavity 1a, or the first cavity wall 11 of one of the cavities 1a is the same cavity wall as the first cavity wall 11 of the other cavity 1a, or the second cavity wall 12 of one of the cavities 1a is the same cavity wall as the second cavity wall 12 of the other cavity 1 a.

The adjacent side walls of the plurality of cavities 1a may be integrally formed or separately formed.

In some embodiments, as shown in fig. 7, the heat exchange plate 100 further includes a limiting component 3, where the limiting component 3 is disposed in the cavity 1a, and the limiting component 3 is used to limit a minimum distance between the first cavity wall 11 and the second cavity wall 12, so that the minimum distance between the first cavity wall 11 and the second cavity wall 12 is always greater than 0, thereby ensuring the circulation of the cavity 1a, enabling the heat exchange medium in the cavity 1a to smoothly and stably flow, and meanwhile, the limiting component 3 can limit the deformation degree of the heat exchange element 1, so that the deformation of the heat exchange element 1 exceeds the elastic limit of the support element 2, and the heat exchange element 1 and the support element 2 cannot be restored to the initial state, so as to ensure that the deformation of the heat exchange element 1 and the support element 2 is always in the elastic deformation range.

The limiting component 3 includes a first limiting member 31 and/or a second limiting member 32, the first limiting member 31 is disposed on the first cavity wall 11, and the first limiting member 31 is spaced from the second cavity wall 12 by a first preset distance, and the second limiting member 32 is disposed on the second cavity wall 12 and is spaced from the first cavity wall 11 by a second preset distance.

In the description of the present application, "and/or" means that three parallel schemes are included, and "a and/or B" is taken as an example, and includes a scheme a, a scheme B, or a scheme that a and B satisfy simultaneously.

In some examples, the spacing assembly 3 comprises a first spacing element, and not a second spacing element, when the heat exchange plate 100 is subjected to a pressing force such that the first cavity wall 11 and the second cavity wall 12 are close to each other, the first spacing element is close to the second cavity wall 12, if the pressing force is large, such that the first spacing element is stopped against the second cavity wall 12, at this time, the first cavity wall 11 and the second cavity wall 12 cannot continue to be close to each other, so as to limit the minimum spacing between the first cavity wall 11 and the second cavity wall 12 to be the corresponding size of the first spacing element, the cavity 1a is still in a circulation state, and deformation of the support 2 is conveniently ensured to be in an elastic deformation range; when the pressing force is reduced or vanished, the first and second cavity walls 12 are separated from each other to be spaced apart at least by the elastic force of the support 2, so that the heat exchange plate 100 is restored toward the original state.

It will be appreciated that the first preset distance may be specifically set according to the magnitude of the pressing force, the bearing capacity of the support 2, and the like.

In some examples, the spacing assembly 3 comprises a second spacing element, instead of the first spacing element, which is adjacent to the first cavity wall 11 when the heat exchange plate 100 is subjected to a pressing force such that the first cavity wall 11 and the second cavity wall 12 are adjacent to each other, if the pressing force is large such that the second spacing element is stopped against the first cavity wall 11, the first cavity wall 11 and the second cavity wall 12 cannot continue to be adjacent to each other at this time, so as to limit the minimum spacing between the first cavity wall 11 and the second cavity wall 12 to be the corresponding dimensions of the second spacing element, the cavity 1a is still in a circulation state, and it is convenient to ensure that the deformation of the support 2 is within the elastic deformation range; when the pressing force is reduced or vanished, the second stopper and the first chamber wall 11 are separated from each other to be spaced apart at least by the elasticity of the support 2, so that the heat exchange plate 100 is restored toward the original state.

It will be appreciated that the second preset distance may be specifically set according to the magnitude of the pressing force, the bearing capacity of the support 2, and the like.

In some examples, the spacing assembly 3 includes a first spacing member and a second spacing member, where the first spacing member and the second spacing member are disposed opposite to each other, so that the first spacing member and the second spacing member are suitable for being in abutting engagement under pressure, or the first spacing member and the second spacing member are disposed in a dislocation manner, so that the first spacing member is suitable for being in abutting engagement under pressure with the second cavity wall 12, and the second spacing member is suitable for being in abutting engagement under pressure with the first cavity wall 11, and similarly, the minimum distance between the first cavity wall 11 and the second cavity wall 12 may be limited to be greater than 0, so as to ensure that the support member 2 is in the elastic deformation range, so that the heat exchange plate 100 always has a tendency to return toward the initial state.

In some embodiments, as shown in fig. 7, the limiting assemblies 3 and the supporting members 2 are respectively multiple, the multiple limiting assemblies 3 and the multiple supporting members 2 are alternately arranged along the width direction of the heat exchange member 1, one limiting assembly 3 is arranged between two adjacent supporting members 2, and one supporting member 2 is arranged between two adjacent limiting assemblies 3, so that all supporting members 2 are in an elastic deformation range, and meanwhile abrupt changes in the cross section area of the cavity 1a are avoided, so that the whole deformation of the heat exchange plate 100 is stable, and the service life of the heat exchange plate 100 is prolonged.

In some embodiments, as shown in fig. 7, the limiting component 3 includes a first limiting member 31 and a second limiting member 32, where the first limiting member 31 and the second limiting member 32 are opposite to each other along the thickness direction of the heat exchange member 1, so as to ensure that the first limiting member 31 and the second limiting member 32 are accurately in abutting fit after the battery heat exchange member is excessively deformed, so as to limit the deformation degree of the heat exchange member 1, and ensure that the elasticity of the support member 2 is always elastic deformation.

Of course, in other embodiments of the present application, the first limiting member 31 and the second limiting member 32 may also be arranged in a staggered manner, for example, the projection of the first limiting member 31 along the thickness direction of the heat exchange member 1 and the projection of the second limiting member 32 along the thickness direction of the heat exchange member 1 are arranged at intervals.

The battery pack 200 according to the embodiment of the second aspect of the present utility model includes the unit battery 101 and the heat exchange plate 100 according to the embodiment of the first aspect of the present utility model described above, at least one of both sides of the thickness of the heat exchange plate 100 is provided with the unit battery 101, and the heat exchange plate 100 is thermally connected with the unit battery 101. For example, in the examples of fig. 4, 5 and 7, the two side walls in the thickness direction of the cavity 1a are the first cavity wall 11 and the second cavity wall 12, respectively, and at least one of the first cavity wall 11 and the second cavity wall 12 is thermally connected to the unit cell 101.

It should be noted that, at least one of two sides of the thickness of the heat exchange plate 100 is in heat conduction connection with the unit cell 101, which means that the unit cell 101 is directly or indirectly fixed on the at least one side of the heat exchange plate 100, so that the unit cell 101 and the heat exchange plate 100 remain relatively static, and meanwhile, heat exchange is performed between the unit cell 101 and the heat exchange plate 100, so that the heat of the unit cell 101 is directly transferred to the heat exchange plate 100 by directly contacting the heat exchange plate 100 with the surface of the unit cell 101, or the heat exchange plate 100 is indirectly matched with the surface of the unit cell 101 through a heat conducting member (such as a heat conducting adhesive) so as to transfer the heat of the unit cell 101 to the heat exchange plate 100 through the heat conducting member, so as to ensure that the heat exchange medium timely takes away the heat of the unit cell 101. The heat exchange medium is not particularly limited, and may be cooling gas, cooling liquid, or a mixed state of gas and liquid, for example, the heat exchange medium may be water, a refrigerant, or the like.

According to the battery pack 200 of the embodiment of the present utility model, the service life of the battery pack 200 can be improved by adopting the battery heat exchange plate 100 described above.

In some embodiments, as shown in fig. 3-4, a plurality of unit cells 101 sequentially arranged along the length direction of the heat exchange plate 100 form a unit cell 101 group, each unit cell 101 has a plurality of side walls, each side wall includes two heat exchange side walls oppositely arranged along the thickness direction of the heat exchange plate 100, the area of each heat exchange side wall is larger than that of the rest side walls of the unit cell 101, namely, the heat exchange side surface is a large surface of the unit cell 101, the heat exchange plate 100 is in heat conduction connection with the corresponding heat exchange side wall, and the cooling of the unit cells 101 by the single heat exchange plate 100 is realized, so that the structure of the battery pack 200 is more compact.

Of course, the layout of the heat exchange plate 100 and the unit cell 101 is not limited thereto, and for example, the heat exchange plate 100 may be thermally connected to other side walls of the unit cell 101.

In some embodiments, as shown in fig. 4, a plurality of heat exchange plates 100 are provided, and the plurality of heat exchange plates 100 are sequentially arranged along the thickness direction of the heat exchange plates 100, and at least one row of unit cell 101 groups are arranged between two adjacent heat exchange plates 100, so as to ensure the cooling effect of the heat exchange plates 100 in the battery pack 200 on the unit cell 101 groups.

For example, in the example of fig. 3, the heat exchange plates 100 and the unit cell 101 groups are respectively plural, and the plural heat exchange plates 100 and the plural unit cell 101 groups are alternately arranged in the thickness direction of the heat exchange plates 100, so that both sides of each row of unit cell 101 groups are respectively provided with one heat exchange plate 100.

In some embodiments, as shown in fig. 3, the unit cell 101 has a positive pole 1011 and a negative pole 1012, and the positive pole 1011 and the negative pole 1012 are both disposed on the top surface of the unit cell 101, so that the subsequent serial-parallel connection of the positive pole 1011 and the negative pole 1012 is facilitated, and the packaging difficulty of the battery pack 200 is reduced. Of course, the positive electrode post 1011 and the negative electrode post 1012 may be provided on opposite sides of the unit cell 101 in the longitudinal direction of the heat exchange plate 100, respectively.

In some embodiments, as shown in fig. 2, the battery pack 200 further includes a tray assembly 102, the tray assembly 102 includes a battery tray 1021 and two expansion beams 1022, the expansion beams 1022 are fixedly connected with the battery tray 1021, an installation space is formed between the battery tray 1021 and the expansion beams 1022, a plurality of unit battery packs and a plurality of heat exchange plates 100 are arranged in the thickness direction in the installation space, the two expansion beams 1022 respectively abut against the side walls of the heat exchange plates 100 on two sides of the battery pack 200 in the thickness direction of the heat exchange plates 100, so as to be used for limiting movement of the unit battery packs and the heat exchange plates 100, and meanwhile, the expansion beams 1022 can absorb expansion forces of the unit batteries 101, so that safety of the battery pack 200 is ensured. The battery pack 200 further includes a case cover 103, where the case cover 103 is covered on the unit battery pack and the heat exchange plate 100, and the case cover 103 is fixedly connected with the battery tray 1021, so that the case cover 103 and the battery tray 1021 define a sealed cavity together, and the unit battery pack and the heat exchange plate 100 are disposed in the sealed cavity.

It is understood that the installation space formed between the battery tray 1021 and the expansion beams 1022 for accommodating the unit battery pack and the heat exchange plate 100 may include, but is not limited to: 1. the battery tray 1021 may define a mounting slot 102a, with the expansion beams 1022 mounted on the upper side of the battery tray 1021, the expansion beams 1022 being located outside the mounting slot 102a and extending along respective edges of the mounting slot 102 a; 2. the battery tray 1021 may define a mounting slot 102a, with the expansion beams 1022 mounted on the upper side of the battery tray 1021, the expansion beams 1022 being located within the mounting slot 102a and extending along respective edges of the mounting slot 102 a; 3. the battery tray 1021 is formed substantially in a flat plate structure, and the expansion beams 1022 are installed at an upper side of the battery tray 1021 such that the battery tray 1021 and the expansion beams 1022 participate in defining an installation space.

The vehicle according to the embodiment of the third aspect of the utility model includes the battery pack 200 according to the embodiment of the above second aspect of the utility model.

According to the vehicle of the embodiment of the utility model, by adopting the battery pack 200, the number of times of repairing or replacing the battery pack 200 is reduced, and the use cost of the vehicle can be saved.

In the description of the present utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "inner," "outer," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. A heat exchange plate, comprising:

the heat exchange piece is internally provided with at least one cavity, and the cavity is provided with a first cavity wall and a second cavity wall which are oppositely arranged;

the support piece is arranged in the cavity and is configured to be elastically deformed under the action of pressure so that the distance between the first cavity wall and the second cavity wall is reduced, the support piece comprises a first support rib and a second support rib which are connected with each other, the first support rib is obliquely arranged relative to the first cavity wall and the second cavity wall, and the second support rib is obliquely arranged relative to the first cavity wall and the second cavity wall.

2. A heat exchanger plate according to claim 1, wherein the support further comprises:

the connecting ribs are arranged at intervals with the first cavity wall and the second cavity wall respectively, and the first supporting ribs and the second supporting ribs are connected with the connecting ribs.

3. A heat exchanger plate according to claim 2, wherein the first and second support ribs are provided obliquely with respect to the connection ribs, respectively.

4. A heat exchanger plate according to claim 3, wherein the connection ribs are arranged parallel to the first and second chamber walls.

5. A heat exchange plate according to claim 2, wherein the first support ribs and the second support ribs are provided in plurality, respectively, the plurality of first support ribs are provided at intervals in the width direction of the heat exchange member, each of the first support ribs is connected to the first chamber wall and the connection rib, the plurality of second support ribs are provided at intervals in the width direction of the heat exchange member, and each of the second support ribs is connected to the second chamber wall and the connection rib.

6. A heat exchange plate according to claim 2, wherein two of the plurality of first support ribs are first ribs, two of the first ribs are respectively connected to both ends of the connecting rib in the width direction of the heat exchange member, two of the plurality of second support ribs are second ribs, and two of the second ribs are respectively connected to both ends of the connecting rib in the width direction of the heat exchange member.

7. A heat exchanger plate according to claim 6, wherein, in the thickness direction of the heat exchange member, two of the first ribs extend from the connecting rib to the first chamber wall in a direction away from each other, and two of the second ribs extend from the connecting rib to the second chamber wall in a direction away from each other.

8. A heat exchange plate according to claim 7, wherein the angle between the first and second ribs at the same end of the connecting ribs is α,30 ° or more α or less than 60 °.

9. A heat exchange plate according to claim 2, wherein the plurality of support members are provided in plurality at intervals along the width direction of the heat exchange member, each of the support members extends along the length direction of the heat exchange member, and the thickness of the first support rib, the thickness of the second support rib and the thickness of the connecting rib are smaller than the thickness of the first chamber wall and the thickness of the second chamber wall.

10. A heat exchanger plate according to any one of claims 1-9, further comprising:

the limiting assembly is arranged in the cavity and used for limiting the minimum distance between the first cavity wall and the second cavity wall, the limiting assembly comprises a first limiting piece and/or a second limiting piece, the first limiting piece is arranged in the first cavity wall and is spaced from the second cavity wall by a first preset distance, and the second limiting piece is arranged in the second cavity wall and is spaced from the first cavity wall by a second preset distance.

11. A heat exchanger plate according to claim 10, wherein the spacing assemblies and the supporting members are provided in plural, respectively, and the plurality of spacing assemblies and the plurality of supporting members are alternately provided in a width direction of the heat exchanger member.

12. A heat exchanger plate according to claim 10, wherein the spacing assembly comprises a first spacing member and a second spacing member, the first and second spacing members being disposed in facing relation along a thickness direction of the heat exchanger member.

13. Battery pack, characterized in that it comprises a single battery and a heat exchanger plate according to any one of claims 1-12, wherein at least one of the two sides of the thickness of the heat exchanger plate is provided with the single battery, and the heat exchanger plate is in heat-conducting connection with the single battery.

14. A vehicle comprising the battery pack according to claim 13.

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