CN218498174U - Heat exchange piece, battery package and consumer - Google Patents

Abstract

The utility model provides a heat transfer piece, battery package and consumer, the heat transfer piece includes: the body is arranged in a frame shape; the runner is arranged in the body and used for accommodating a heat exchange medium, a groove is arranged on the inner wall of the runner, and the groove deviates from the runner and is sunken into the body; the liquid inlet and the liquid outlet are arranged on the body and are respectively communicated with the flow channel; the battery pack comprises the heat exchange piece; the electric equipment comprises the battery pack. The utility model provides a certain accommodation space can be reserved for the inflation of electric core to heat transfer piece, battery package and consumer, avoids electric core to receive too big extrusion force on a large scale.

Description

Heat exchange piece, battery package and consumer

Technical Field

The utility model relates to a new forms of energy technical field, concretely relates to heat transfer piece, battery package and consumer.

Background

With the continuous development of the new energy electric automobile industry, the power battery as an important energy supply component thereof has become one of the main directions of the power development of electric automobiles at home and abroad at present. The power battery is influenced by the ambient temperature and self heat production in the actual use process, the temperature is a main influence factor of the performance, safety and reliability of the power battery, the service life and the running performance of the power battery are very important, the power battery is ensured to be in a proper working temperature range, and the reasonable battery temperature difference is maintained to be necessary.

Liquid cooling thermal management is as one of current power battery group thermal management strategy, generally realizes the heat transfer through the mode of liquid convection, takes the heat that the battery produced to external circulation system through inside fluid medium.

At present, a cold plate is generally placed at the bottom or the side surface of a battery cell to carry out heat management on the battery cell, but the problems of low heat dissipation efficiency and large temperature difference of the battery cell exist in the heat management process. Compared with the bottom surface and the side surface of the battery cell, the large surface of the battery cell has large heat dissipation area and short heat transfer path. Meanwhile, the battery core generates gas expansion in the charging and discharging process, so that a certain space needs to be reserved for the battery core expansion in the battery pack. In combination with the above problem, the utility model provides a return shape frame type liquid cooling board has acted as the effect of the shape frame support of returning in the battery package originally when solving electric core heat dissipation problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat transfer piece, battery package and consumer to solve heat dissipation and inflation problem between the interior electric core of battery package simultaneously.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a heat exchange element, comprising:

a body arranged in a frame shape; and

the flow channel is arranged in the body and used for containing a heat exchange medium, a groove is formed in the inner wall of the flow channel, and the groove deviates from the flow channel and is sunken into the body; and

the liquid inlet and the liquid outlet are arranged on the body and are respectively communicated with the flow channel.

In some embodiments of the present invention, the body includes a first frame strip, a second frame strip, a third frame strip and a fourth frame strip connected end to end in sequence;

the flow channel is arranged in at least one of the first frame strip, the second frame strip, the third frame strip and the fourth frame strip of the body.

In some embodiments of the present invention, the liquid inlet and the liquid outlet are both disposed on the fourth frame strip;

the flow channel comprises a first flow section arranged in the first frame strip, a second flow section arranged in the second frame strip and a third flow section arranged in the third frame strip;

the liquid inlet end of the first circulation section is communicated with the liquid inlet, and the liquid outlet end of the first circulation section is communicated with the liquid inlet end of the second circulation section;

the liquid outlet end of the second circulation section is communicated with the liquid inlet end of the third circulation section;

and the liquid outlet end of the third flow-through section is communicated with the liquid outlet.

In some embodiments of the present invention, the liquid inlet comprises a first liquid inlet and a second liquid inlet;

the first liquid inlet and the second liquid inlet are formed in the fourth frame strip, and the liquid outlet is formed in the second frame strip;

the flow channel comprises a first circulation section arranged in the first frame strip, a second circulation section arranged in the second frame strip and a third circulation section in the third frame strip;

the liquid inlet end of the first circulation section is communicated with the first liquid inlet, and the liquid outlet end of the first circulation section is communicated with the liquid inlet end of the second circulation section;

the liquid outlet end of the second circulation section is communicated with the liquid outlet end of the third circulation section, and the liquid outlet end of the second circulation section is communicated with the liquid outlet;

the liquid inlet end of the third flow-through section is communicated with the second liquid inlet, and the liquid outlet end of the third flow-through section is communicated with the liquid outlet.

In some embodiments of the present invention, the groove is along the extending direction of the flow channel is in a straight line or a spiral arrangement on the inner wall of the flow channel.

In some embodiments of the present invention, the flow channel has an extending direction and a circumferential direction perpendicular to each other;

the groove extends in the extending direction and/or in the circumferential direction of the flow channel.

The utility model discloses an in some embodiments, the runner includes many branch road runners, many parallelly connected setting between the branch road runner.

The utility model discloses an in some embodiments, it is protruding to be equipped with the vortex on the body, the vortex is protruding certainly the body stretches into in the runner.

In some embodiments of the present invention, the cross-sectional shape of the turbulator comprises at least one of a rectangle, a triangle, a trapezoid, a semicircle, a circle, an ellipse, an oblong, a pentagram.

In order to achieve the above purpose, the utility model also provides the following technical scheme:

a battery pack comprises the heat exchange piece.

Compared with the prior art, the technical scheme of the utility model following beneficial effect has:

1. the utility model provides a heat transfer piece is the frame shape that the middle part was excavated, can not only provide the heat transfer effect of adjusting the temperature for the electric core of arranging adjacent with it, can also provide certain accommodation space when this electric core takes place to expand, let the electric core big face that the inflation is bloated to go into the cavity district of the heat transfer piece of frame shape, can reduce the extrusion force that comes from electric core outside that electric core big face received when the inflation to guarantee the security of electric core, and prolong the labour life-span of electric core.

2. The utility model provides a heat transfer piece adopts the frame shape design that the middle part was hollowed out, can reduce the dead weight of heat transfer piece to promoted and adopted the battery package of heat transfer piece and consumer's energy density.

3. When the temperature of the battery cell is higher, a low-temperature heat exchange medium is introduced into a flow channel in the heat exchange piece, the temperature of the battery cell is reduced after the low-temperature heat exchange medium exchanges heat with the battery cell, and the temperature difference between each local position of the battery cell is reduced, so that the battery cell maintains better temperature uniformity; when the ambient temperature of the operating mode that electric core located is lower, perhaps need certain preheating temperature when electric core just started in order to guarantee its stable performance, this moment the utility model provides an let in the higher heat transfer medium of temperature relatively in the runner in the heat transfer piece, make electric core temperature suitably rise after warm heat transfer medium and the electric core heat transfer of temperature to reduce the difference in temperature between each local position of electric core, make electric core maintain better temperature homogeneity, reduce electric core and analyse lithium risk, promote the security and the life of electric core.

4. Compare in conventional electric core bottom liquid cooling design, the utility model discloses set up the laminating of heat transfer piece on electric core thickness direction's big face, shortened the higher electric connector's of heat production heat dissipation route in the electric core, further reduced the electric core difference in temperature, improved the temperature homogeneity of electric core to guarantee the performance of electric core and prolong the service life-span of electric core.

5. The utility model provides a be equipped with the recess on heat exchange member's the runner inner wall, this recess design has increased the area of contact between runner and the heat exchange member body, has increased heat transfer area promptly, has strengthened from this heat exchange member and the heat exchange efficiency between the electricity core, for having adopted heat exchange member's battery package and consumer provide better battery heat transfer function, have guaranteed the performance of electricity core and battery package, have prolonged the holistic in service life of battery and product.

6. The utility model provides a heat transfer piece is in the parallelly connected setting of many branch road runners of one side design of being close to the electric connector on electric core, increases runner quantity through the one end that is close to electric connector at heat transfer piece promptly, has strengthened the radiating efficiency who is equipped with the one end of electric connector to electric core to realize the temperature homogeneity of electric core.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments 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 schematic structural view of a heat exchange member according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of the heat exchange element of FIG. 1;

fig. 3 is a schematic structural view of a heat exchange member according to a second embodiment of the present invention;

FIG. 4 is a cross-sectional view of the heat exchange element of FIG. 3;

fig. 5 is a partial cross-sectional enlarged view of a heat exchange member according to a third embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a heat exchange member according to a fourth embodiment of the present invention;

fig. 7 is a schematic partial sectional view of a heat exchange member according to a fifth embodiment of the present invention;

fig. 8 is a schematic partial sectional view of a heat exchange member according to a sixth embodiment of the present invention;

fig. 9 is a schematic structural view of a battery pack according to a seventh embodiment of the present invention, as viewed in the thickness direction thereof;

fig. 10 is a schematic structural view of the battery pack in fig. 9, as viewed in the thickness direction of the battery cells.

The main reference numbers in the drawings attached to the specification of the utility model are as follows:

1-a heat exchange member; 11-a body; 111-a first frame strip; 112-a second frame strip; 113-a third frame strip; 114-fourth frame strip; 12-a flow channel; 121-a first flow-through section; 122-a second flow-through section; 123-a third flow-through section; 124-branch flow channel; 13-a liquid inlet; 131-a first liquid inlet; 132-a second liquid inlet; 14-a liquid outlet; 15-a groove; 16-a turbulence protrusion; 17-a cavity region;

2-electric core; 21-pole column;

3-a thermal insulation;

4-heat conducting member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

The technical scheme of the utility model a heat transfer piece, battery package and consumer are provided, the following detailed description that carries on respectively. It should be noted that the following description of the embodiments is not intended to limit the preferred sequence of the embodiments of the present invention. In the following embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to related descriptions of other embodiments for parts that are not described in detail in a certain embodiment.

Example 1

As shown in fig. 1 to 4, in some embodiments of the present invention, a heat exchange member 1 includes: a body 11 arranged in a frame shape; the flow channel 12 is arranged in the body 11 and used for accommodating a heat exchange medium; and a liquid inlet 13 and a liquid outlet 14, both opened on the body 11 and respectively communicated with the flow channel 12. The utility model provides a heat transfer piece 1 is the frame shape that the middle part was excavated, can not only provide the effect of heat transfer accuse temperature for the electric core of arranging adjacent with it, can also provide certain accommodation space when this electric core takes place to expand, let the square electric core big face that the inflation is bloated to go into in the cavity district of heat transfer piece 1 of frame shape, can reduce the extrusion force that comes from electric core outside that square electric core big face received when the inflation, thereby guarantee the security of electric core, and prolong the service life-span of electric core. Moreover, the utility model provides a frame shape design that heat transfer spare 1 adopted the middle part to excavate can reduce heat transfer spare 1's dead weight to promoted and adopted heat transfer spare 1's battery package and consumer's energy density also can reduce manufacturing material and cost simultaneously.

It is understood that the specific components of the heat exchange medium may be selected and adjusted according to the practical application, for example, the heat exchange medium may be water or glycol, or a mixture of water and glycol in a certain ratio, or other liquids with high specific heat capacity.

In addition, what kind of material is specifically used for the heat exchange element 1 and the body 11 thereof, which can be selected and adjusted according to actual requirements, specifically, aluminum and its alloy, copper and its alloy, or other pure metals or alloys with high thermal conductivity coefficient can be used.

As shown in fig. 1 to 4, in some embodiments of the present invention, the body 11 includes a first frame strip 111, a second frame strip 112, a third frame strip 113 and a fourth frame strip 114 connected end to end in sequence; the flow channel 12 is disposed in at least one of the first frame strip 111, the second frame strip 112, the third frame strip 113, and the fourth frame strip 114 of the body 11. It can be understood that the specific shape and size parameters of each frame strip can be selected and adjusted according to actual conditions.

As shown in fig. 1 and fig. 3, in some embodiments of the present invention, four frame strips of the frame-shaped body 11 of the heat exchange member 1 enclose a cavity region 17 in the middle of the body 11. When the heat exchange piece 1 is attached to or arranged opposite to the large surface or the side surface with a relatively small size of the square battery cell, the battery cell expands to a certain degree in the charging and discharging processes of the battery cell, and at the moment, the large surface or the side surface of the battery cell can expand to a certain degree into the cavity area 17; that is to say, the utility model provides a heat exchange member 1 of frame shape design can play and provide certain accommodation space and the effect of coordinating holding capacity for electric core inflation, receives the too high extrusion force that comes from the external world when avoiding electric core inflation and causes the damage to electric core to guaranteed the safety and stability nature and the service life-span of electric core, just also can improve performance and the service life who has adopted this heat exchange member 1's battery package and consumer.

In addition, the cavity region 17 may be empty to receive a portion of the large surface of the square battery cell expanded therein, and reduce the weight of the entire battery pack to increase energy density; it is also possible to place a thermal insulation in the cavity region 17 to prevent the thermal runaway of a single cell from affecting the neighboring normal cells.

As shown in fig. 1 and fig. 2, in some embodiments of the present invention, the liquid inlet 13 and the liquid outlet 14 are both disposed on the fourth frame strip 114; the flow channel 12 includes a first flow section 121 disposed in the first frame strip 111, a second flow section 122 disposed in the second frame strip 112, and a third flow section 123 disposed in the third frame strip 113; the liquid inlet end of the first circulation section 121 is communicated with the liquid inlet 13, and the liquid outlet end of the first circulation section 121 is communicated with the liquid inlet end of the second circulation section 122; the liquid outlet end of the second circulation section 122 is communicated with the liquid inlet end of the third circulation section 123; the liquid outlet end of the third flow-through section 123 is communicated with the liquid outlet 14.

As shown in FIGS. 3 and 4, in some embodiments of the present invention, the loading port 13 comprises a first loading port 131 and a second loading port 132; the first liquid inlet 131 and the second liquid inlet 132 are disposed on the fourth frame strip 114, and the liquid outlet 14 is disposed on the second frame strip 112; the flow channel 12 includes a first flow section 121 disposed in the first frame strip 111, a second flow section 122 disposed in the second frame strip 112, and a third flow section 123 disposed in the third frame strip 113; the liquid inlet end of the first circulation section 121 is communicated with the first liquid inlet 131, and the liquid outlet end of the first circulation section 121 is communicated with the liquid inlet end of the second circulation section 122; the liquid outlet end of the second circulation section 122 is communicated with the liquid outlet end of the third circulation section 123, and the liquid outlet end of the second circulation section 122 is communicated with the liquid outlet 14; the liquid inlet end of the third flowing-through section 123 is communicated with the second liquid inlet 132, and the liquid outlet end of the third flowing-through section 123 is communicated with the liquid outlet 14.

Obviously, can set up the inlet 13 of different quantity and the liquid outlet 14 of different quantity according to the practical application demand to the flow situation of heat transfer medium in the runner 12 is improved in corresponding adjustment, and then promotes the heat exchange efficiency between heat transfer medium and the body 11, thereby promotes heat transfer part 1 and sets up or the heat transfer temperature regulation effect of the electric core that sets up relatively to adjacent laminating.

As shown in fig. 6, in some embodiments of the present invention, the cross section of the flow channel 12 is a regular hexagon, and the cross section is perpendicular to the extending direction of the flow channel 12. Of course, in other embodiments of the present invention, the cross section of the flow channel 12 may be configured as other polygons, such as regular pentagon, square, rectangle, and may also be configured as circle, ellipse, and ellipse, depending on the actual situation.

As shown in fig. 4 to 8, in some embodiments of the present invention, a groove 15 is disposed on an inner wall of the flow channel 12, and the groove 15 deviates from the flow channel 12 and is recessed into the body 11. The design of this recess 15 has increased the area of contact between the body 11 of runner 12 and heat transfer spare 1, has increased heat transfer area promptly, has strengthened from this heat transfer efficiency between heat transfer spare 1 and the electric core, for having adopted the battery package and the consumer of heat transfer spare 1 provide better battery heat transfer function, have guaranteed the performance of electric core and battery package, have prolonged the holistic in service life of battery and product.

In some embodiments of the present invention, the groove 15 is linearly or spirally arranged on the inner wall of the flow channel 12 along the extending direction of the flow channel 12; it can be understood that different forms and layout modes the recess 15 can also produce different influences to heat transfer medium's liquid stream situation, can increase the chaos degree of heat transfer medium liquid stream to a certain extent, and then forces each local area in the liquid stream to take place abundant heat exchange, promotes heat transfer medium's temperature homogeneity from this to promote heat transfer medium to the heat transfer effect of body 11, further improve the heat transfer effect of heat transfer piece 1 to the electric core of adjacent arrangement with this.

In some embodiments of the present invention, the shape of the groove 15 may be at least one of a circle, a polygon or a bar, and the groove 15 of which shape and size is specifically adopted can be selected and adjusted according to actual conditions.

Specifically, in some embodiments, the grooves 15 in the linear arrangement and the spiral arrangement may exist at the same time, and the notch shape and the groove depth dimension of the grooves 15 may be combined and matched in various ways, so that the flow of the heat exchange medium has a high enough chaos, and the heat exchange capability of the heat exchange medium and the heat exchange and temperature regulation capability of the heat exchange element body and the battery cell are further improved.

In some embodiments of the present invention, the flow channel 12 has an extending direction and a circumferential direction perpendicular to each other; the grooves 15 extend in the extension direction and/or in the circumferential direction of the flow channel 12. As shown in fig. 7, in some embodiments of the present invention, the groove 15 extends along the extending direction of the flow channel 12. As shown in fig. 8, in some embodiments of the present invention, the groove 15 extends on the inner wall of the flow channel 12, and has a component in the extending direction and the circumferential direction of the flow channel 12, and it can be understood that the groove 15 is inclined from the extending direction of the flow channel 12, and it can also be regarded as that the groove 15 extends spirally along the inner wall of the flow channel 12. The above-mentioned recess 15 of various shapes and distribution mode, its effect all is area of contact and heat transfer area between increase heat transfer medium and the body 11 to reinforcing heat transfer piece 1 is to the heat transfer thermoregulation effect of the electric core that adjacent laminating set up or set up relatively. Combine fig. 6 and fig. 7, perhaps combine fig. 6 and fig. 8 in some embodiments of the utility model discloses a be provided with a plurality of recesses 15 that are parallel to each other on the inner wall of runner 12 side by side, increase area of contact and heat transfer area between heat transfer medium and the body 11 through the quantity that increases recess 15 promptly, and then improve heat transfer medium to the heat exchange efficiency of body 11 to further improve the heat transfer thermoregulation effect of heat transfer piece 1 to the electric core of adjacent setting. Specifically, the relative layout of the plurality of grooves 15 is not limited to the above-mentioned ones, and can be selected and adjusted according to actual requirements.

The utility model discloses an in some embodiments, set up heat exchange member 1 laminating on square electric core thickness direction's big face, shortened the heat dissipation route of the higher electric connector of heat production in the electric core, reduced electric core highest temperature, further reduced the difference in temperature between each local area on the electric core to the temperature homogeneity of square electric core has been improved, thereby guarantee the performance of electric core and prolong the labour life-span of electric core. Of course, the utility model provides a heat transfer 1 also can provide the heat transfer effect to the electric core of other appearances and types.

It can be understood that the one end of the square battery cell with the electric connector often has higher temperature due to joule heat generated by work, and the heat conductivity of the battery cell is limited, so that the temperature uniformity of the existing battery cell is poor, and the performance and the service life of the battery cell are influenced. Therefore, as shown in fig. 4, in some embodiments of the present invention, the flow channel 12 includes a plurality of branch flow channels 124, many parallelly connected setting between the branch flow channels 124, these some branch flow channels 124 set up in one side that heat exchange member 1 is close to electric core electric connector, increase heat exchange efficiency between heat transfer medium and the body 11 through the quantity that increases branch flow channel 124 to the one end that is equipped with electric connector to electric core provides more efficient radiating effect, thereby guarantees that electric core has better temperature uniformity.

Specifically, the branch flow channels 124 connected in parallel in groups can be arranged at multiple positions inside the body 11 of the heat exchange element 1 to cope with different practical application scenarios. In addition, in some embodiments of the present invention, the number of the branch runners 124 connected in parallel to form a group in each group may be 1 to 10, specifically, 3, 5 or 8.

As shown in fig. 4, in some embodiments of the utility model, be equipped with the vortex arch 16 on the inner wall of runner 12, the vortex is protruding 16 certainly the inner wall stretches into in the runner 12, this vortex arch 16 can play the effect of disturbance, stirring to the heat transfer medium in the runner 12, forces fully to fuse between each local area's the heat transfer medium, improves each local area's heat transfer medium's temperature homogeneity, and then improves the heat transfer medium to the heat exchange efficiency of body 11, thereby improves heat exchange member 1 is to the heat exchange efficiency of adjacent electric core. It is understood that the specific shape and arrangement of the turbulator protrusions 16 can be selected and adjusted according to the actual situation.

The utility model discloses an in some embodiments, the protruding 16 cross sectional shape of vortex includes at least one item in rectangle, triangle-shaped, trapezoidal, semi-circular, oval, long circle, the pentagram to obtain the vortex effect to heat transfer medium's difference, and then improve the heat transfer ability of heat transfer piece 1 to electric core.

It can be understood that, in some embodiments of the present invention, when the temperature of the battery cell is higher, a low-temperature heat exchange medium is introduced into the flow channel of the heat exchange member provided by the present invention, so that the temperature of the battery cell is reduced after the low-temperature heat exchange medium exchanges heat with the battery cell, and the temperature difference between each local position of the battery cell is reduced, so that the battery cell maintains better temperature uniformity; when the ambient temperature of the operating mode that electric core located is lower, perhaps need certain preheating temperature when electric core just started in order to guarantee its stable performance, this moment the utility model provides an let in the higher heat transfer medium of temperature relatively in the runner in the heat transfer piece, make electric core temperature suitably rise after warm heat transfer medium and the electric core heat transfer of temperature to reduce the difference in temperature between each local position of electric core, make electric core maintain better temperature homogeneity, reduce electric core and analyse lithium risk, promote the security and the life of electric core.

Example 2

As shown in fig. 9, in some embodiments of the present invention, a battery pack includes: the shell surrounds to form an accommodating cavity; the plurality of square battery cells 2 are accommodated in the accommodating cavity and are provided with a thickness direction, at least part of the square battery cells 2 are arranged in the thickness direction, and each square battery cell 2 is provided with a large surface in the thickness direction; and the heat exchange member 1 as described in embodiment 1, the body 11 of each of the heat exchange members 1 having a thickness direction; at least one large surface of each square battery cell 2 is arranged opposite to one side of the body 11 of the heat exchange member 1 in the thickness direction.

Of course, in other embodiments of the utility model, also can adopt the electric core of other shape models, correspondingly, heat exchange member 1 also sets up or sets up relatively with the side of these some electric cores or the laminating of lateral wall to the performance is to the heat transfer accuse temperature effect of adjusting the temperature of electric core.

As shown in fig. 9 and 10, in some embodiments of the present invention, the battery cell 2 has a height direction, and the height direction and the thickness direction of the battery cell 2 are perpendicular to each other; the two ends of the electric core 2 in the height direction are respectively provided with an end face, each end face is provided with an electric connecting piece, and each electric connecting piece comprises a pole 21, a pole lug, a connecting piece and a bus bar.

As shown in fig. 9, in some embodiments of the present invention, the battery pack further comprises a heat insulator 3; the heat insulating part 3 is square deviates from in the thickness direction of electric core 2 the big face laminating setting of heat exchanging part 1, and when certain electric core takes place the thermal runaway, a large amount of heats of its instantaneous production can be isolated by heat insulating part 3 to prevent that the high heat wave that single electric core thermal runaway produced reaches adjacent more electric cores, thereby promote the security of battery package.

In other embodiments of the present invention, as shown in fig. 10, the frame-shaped body 11 of the heat exchange member 1 encloses a cavity region 17, and the heat insulation member 3 is disposed in the cavity region 17. When the heat exchange piece 1 is attached to or arranged opposite to the large surface or the side surface with a relatively small size of the square battery cell, the battery cell expands to a certain degree in the charging and discharging processes of the battery cell, and at the moment, the large surface or the side surface of the battery cell can expand to a certain degree into the cavity area 17; that is to say, the utility model provides a heat exchange member 1 of frame shape design can play and provide certain accommodation space and coordinate the effect of holding capacity for electric core inflation, receives when avoiding electric core inflation and comes from external too big extrusion force and make electric core impaired to guarantee the safety and stability nature and the life in service of electric core, just also can improve the performance and the service life of battery package and adopted the consumer of this battery package.

It can be understood that the specific material of the thermal insulation member 3 can be selected and adjusted according to the actual application scenario, and the specific material can be aerogel, fiberglass, or other materials with low thermal conductivity and compressibility.

As shown in fig. 9, in some embodiments of the present invention, the battery pack further includes a heat conducting member 4; the heat conducting piece 4 is arranged between the large surface of the battery cell 2 and the heat exchange piece 1; the heat conducting member 4 includes a heat conducting pad and a heat conducting adhesive. This heat-conducting piece 4 can promote electric core 2 with heat transfer ability between the heat-exchanging piece 1 can also play certain adhesive effect simultaneously, is about to electric core 2 and the bonding of heat-exchanging piece 1 fixed to promote the holistic equipment stability of battery package and reliability, avoid the battery package and adopted the power consumption equipment of battery package strikes the not hard up problem that leads to by the shock that probably appears in the more service environment of external force impact.

Example 3

An electric device comprising the battery pack according to embodiment 2; specifically, the electric equipment includes, but is not limited to, an electric automobile.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. In addition, the description has used specific examples to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention, and the content of the description should not be understood as the limitation of the present invention.

Claims (10)

1. A heat exchanger element (1), characterized in that the heat exchanger element (1) comprises:

a body (11) arranged in a frame shape; and

the flow channel (12) is arranged in the body (11) and used for accommodating a heat exchange medium, a groove (15) is formed in the inner wall of the flow channel (12), and the groove (15) deviates from the flow channel (12) and is recessed into the body (11); and

the liquid inlet (13) and the liquid outlet (14) are both arranged on the body (11) and are respectively communicated with the flow channel (12).

2. The heat exchanger (1) according to claim 1, wherein the body (11) comprises a first frame strip (111), a second frame strip (112), a third frame strip (113) and a fourth frame strip (114) which are connected end to end in sequence;

the flow channel (12) is arranged in at least one of a first frame strip (111), a second frame strip (112), a third frame strip (113) and a fourth frame strip (114) of the body (11).

3. The heat exchanger (1) according to claim 2, wherein the liquid inlet (13) and the liquid outlet (14) are both disposed on the fourth frame strip (114);

the flow channel (12) comprises a first flow section (121) arranged in the first frame strip (111), a second flow section (122) arranged in the second frame strip (112) and a third flow section (123) arranged in the third frame strip (113);

the liquid inlet end of the first circulation section (121) is communicated with the liquid inlet (13), and the liquid outlet end of the first circulation section (121) is communicated with the liquid inlet end of the second circulation section (122);

the liquid outlet end of the second circulation section (122) is communicated with the liquid inlet end of the third circulation section (123);

the liquid outlet end of the third flow-through section (123) is communicated with the liquid outlet (14).

4. A heat exchange piece (1) according to claim 2, wherein the liquid inlet (13) comprises a first liquid inlet (131) and a second liquid inlet (132);

the first liquid inlet (131) and the second liquid inlet (132) are arranged on the fourth frame strip (114), and the liquid outlet (14) is arranged on the second frame strip (112);

the flow channel (12) comprises a first flow section (121) arranged in the first frame strip (111), a second flow section (122) arranged in the second frame strip (112) and a third flow section (123) arranged in the third frame strip (113);

the liquid inlet end of the first circulation section (121) is communicated with the first liquid inlet (131), and the liquid outlet end of the first circulation section (121) is communicated with the liquid inlet end of the second circulation section (122);

the liquid outlet end of the second circulation section (122) is communicated with the liquid outlet end of the third circulation section (123), and the liquid outlet end of the second circulation section (122) is communicated with the liquid outlet (14);

the liquid inlet end of the third flow-through section (123) is communicated with the second liquid inlet (132), and the liquid outlet end of the third flow-through section (123) is communicated with the liquid outlet (14).

5. A heat exchanger (1) according to claim 1, wherein the grooves (15) are arranged linearly or spirally on the inner wall of the flow channel (12) along the extension direction of the flow channel (12).

6. A heat exchange element (1) according to claim 1, characterized in that the flow channels (12) have mutually perpendicular directions of extension and circumferential directions;

the groove (15) extends in the direction of extension and/or in the circumferential direction of the flow channel (12).

7. A heat exchange element (1) according to claim 1, wherein the flow channel (12) comprises a plurality of branch flow channels (124), and the plurality of branch flow channels (124) are arranged in parallel.

8. A heat exchange element (1) according to any of claims 1 to 7, characterized in that flow disturbing protrusions (16) are provided on the inner wall of the flow channel (12), said flow disturbing protrusions (16) extending from the inner wall into the flow channel (12).

9. The heat exchange element (1) according to claim 8, wherein the cross-sectional shape of the turbulator protrusion (16) comprises at least one of rectangular, triangular, trapezoidal, semi-circular, oval, oblong, pentagram.

10. A battery pack, characterized in that the battery pack comprises a heat exchanger (1) according to any of claims 1-9.

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