CN216928704U

CN216928704U - Heat dissipation assembly for installing battery module and battery pack

Info

Publication number: CN216928704U
Application number: CN202220168669.1U
Authority: CN
Inventors: 郁辰; 刘思; 侯敏; 曹辉
Original assignee: Shanghai Ruipu Energy Co Ltd
Current assignee: Shanghai Ruipu Energy Co Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-07-08
Anticipated expiration: 2032-01-21

Abstract

The application relates to a radiator unit and battery package for installing battery module, it includes: two radiating side plates which are arranged at intervals; the end plates are connected to two ends of the two radiating side plates to form a radiating frame; the heat conducting plates are distributed in the heat radiating frame at intervals along the length direction of the heat radiating side plates and are connected with the heat radiating side plates so as to form a plurality of spaces for placing single batteries in the heat radiating frame; and battery contact surfaces are arranged on two sides of the heat conducting plate so as to support the battery monomer in the heat dissipation frame. The heat dissipation assembly is capable of stably placing the battery monomer in the heat dissipation assembly, transferring heat generated by the battery monomer from the inside to all directions, and finally transferring most of the heat to the heat dissipation side plate, so that the heat conduction area and the heat conduction direction are increased, the heat is timely derived from the battery monomer inside, the effect of multiple purposes is achieved, and the production and manufacturing cost is reduced.

Description

Heat dissipation assembly for installing battery module and battery pack

Technical Field

The application relates to the technical field of batteries, in particular to a heat dissipation assembly for installing a battery module and a battery pack.

Background

The service environment temperature of present battery is the key parameter that the battery module used, at the in-process of battery module circulation charge-discharge, because monomer electricity core itself has internal resistance, consequently electric core has the phenomenon of generating heat at circulation charge-discharge in-process, at the charge-discharge in-process of higher multiplying power, the internal polarization internal resistance of monomer electricity core can show the increase, and the electricity core generates heat and will be more obvious, and the inside chemical balance of electricity core can be destroyed to too high electric core temperature, leads to the side reaction. And the performance of the battery cell material capable of being charged and discharged circularly at high temperature can be degraded, and the cycle performance of the battery can be greatly reduced. Therefore, in the design of the battery module, a heat dissipation design is a very important part thereof.

In some correlation techniques, in the heat dissipation design mode of the conventional battery module, the heat dissipation of the single battery cell is usually to add a heat conduction aluminum plate on the two side surfaces or the bottom surface of the single battery cell, and the heat is conducted out of the module through the edge folding part of the heat conduction aluminum plate, but the following problems exist in this mode:

because the heat is conducted to heat conduction aluminum plate from inside through battery body on, then dispel the heat by heat conduction aluminum plate again, the inside of this mode battery produces most heat and in time derives, therefore the radiating effect is poor, influences battery module cycle life.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a radiator unit and battery package for installing battery module to solve the heat dissipation of monomer electricity core in the correlation technique and increase heat conduction aluminum plate, the lower problem of radiating efficiency in both sides face or the bottom surface of monomer electricity core usually.

In a first aspect, a heat dissipation assembly for mounting a battery module is provided, which includes:

two radiating side plates which are arranged at intervals;

the end plates are connected to two ends of the two radiating side plates to form a radiating frame;

the heat conducting plates are distributed in the heat radiating frame at intervals along the length direction of the heat radiating side plates and are connected with the heat radiating side plates so as to form a plurality of spaces for placing single batteries in the heat radiating frame; and battery contact surfaces are arranged on two sides of the heat conducting plate so as to support the battery monomer in the heat dissipation frame.

In some embodiments, the heat conducting plate comprises two metal plates which are sealed and buckled, a plurality of runner grooves are arranged on the metal plates, and metal powder sintering structures are arranged on the inner walls of the runner grooves;

a plurality of runner grooves on the two metal plates are sealed and enclosed to form a plurality of heat exchange channels, and heat circulation media are filled in the heat exchange channels.

In some embodiments, the heat exchange channel includes an evaporation section and a condensation section, the condensation section is located above the evaporation section, and one end of the condensation section, which is far away from the evaporation section, extends towards the heat dissipation side plate.

In some embodiments, the evaporation sections of all the heat exchange channels are vertically arranged and are distributed at intervals in the transverse direction of the heat conducting plate;

the condensation sections of all the heat exchange channels are circular arcs, and the radius of the condensation sections is gradually increased in the transverse direction of the heat conducting plate.

In some embodiments, the heat conducting plate is rectangular, and the plurality of heat exchanging channels are divided into two parts which are symmetrical about the central line of the heat conducting plate; the evaporation sections of the heat exchange channels in each part are vertically arranged and are distributed at intervals in the transverse direction of the heat conducting plate; the condensation section of the heat exchange channel is a circular arc, and the radius of the condensation section is gradually increased in the transverse direction of the heat conducting plate.

In some embodiments, the cross-sectional areas of the two ends of the radiating side plate are equal; or the like, or, alternatively,

the sectional area of the heat dissipation side plate is gradually reduced from one end to the other end.

In some embodiments, the heat dissipation side plate further has a plurality of heat dissipation fins extending along the length direction of the heat dissipation side plate.

In some embodiments, the battery pack further comprises an insulating pad disposed on a face of the end plate for contacting the battery cell.

In a second aspect, there is provided a battery pack, including:

a plurality of heat dissipating components; and the number of the first and second groups,

the battery single bodies are arranged in the heat dissipation assemblies to form a plurality of battery modules, and the battery modules are connected in series and/or in parallel;

a case in which a plurality of battery modules are placed; an air inlet and an air outlet are respectively arranged at the two ends of the box body along the length direction of the radiating side plate, and the air inlet is arranged at one end with a smaller sectional area of the radiating side plate.

In some embodiments, the air conditioner further comprises a heat dissipation fan and a temperature sensor, wherein the heat dissipation fan and the temperature sensor are arranged in the box body and positioned at one end of the air outlet; when the temperature sensor detects that the temperature in the box body reaches a threshold value, the cooling fan is started.

The beneficial effect that technical scheme that this application provided brought includes:

the embodiment of the application provides a heat dissipation assembly for installing a battery module, wherein end plates are arranged at two ends of a heat dissipation side plate to form a rectangular frame, a plurality of heat conduction plates are distributed in the heat dissipation frame at intervals along the length direction of the heat dissipation side plate and are connected with the heat dissipation side plate, so that a stable frame structure capable of containing a plurality of battery monomers is formed, the battery monomers are placed in the frame structure, battery contact surfaces of the heat conduction plates cover the end surfaces of the battery monomers and are attached to and abut against the battery monomers, the battery monomers are stably placed in the frame structure, heat generated by the battery monomers can be transferred from the inside to all directions, and most of heat is finally transferred to the heat dissipation side plate; due to the arrangement, the heat conducting area and the heat conducting direction are increased, heat can be timely conducted out of the internal battery monomer, the heat radiating efficiency is improved, the performance of the battery monomer is guaranteed, heat radiation is realized while the battery monomer is installed, the effect of multiple purposes is achieved, and the production and manufacturing cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a battery module according to an embodiment of the present disclosure;

fig. 2 is an exploded schematic view of a battery module according to an embodiment of the present disclosure;

fig. 3 is a schematic view illustrating a heat dissipation assembly for mounting a battery module according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a heat-conducting plate provided in an embodiment of the present application;

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

fig. 6 is a schematic diagram of a battery pack with a case from another perspective according to an embodiment of the present disclosure.

In the figure: 1. a heat dissipation side plate; 2. an end plate; 3. a heat conducting plate; 30. a heat exchange channel; 300. an evaporation section; 301. a condensing section; 4. a battery cell; 5. a heat dissipating fin; 6. a heat insulating pad; 7. a box body; 8. an air inlet; 9. an air outlet; 10. a heat dissipation fan.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

A heat dissipation assembly and a battery pack for mounting a battery module are used for solving the problem that in the prior art, heat dissipation of a single battery cell is usually realized by adding heat conduction aluminum plates on two side faces or bottom faces of the single battery cell, and the heat dissipation efficiency is low.

Referring to fig. 3, a heat dissipation assembly for mounting a battery module includes two heat dissipation side plates 1, an end plate 2, and a plurality of heat conduction plates 3;

the two radiating side plates 1 are arranged at intervals, and the two radiating side plates 1 are respectively fixedly connected with an end plate 2, so that a radiating frame is formed; the heat conducting plates 3 are distributed in the heat radiating frame at intervals along the length direction of the heat radiating side plate 1 and are fixedly connected with the heat radiating side plate 1 so as to form a plurality of spaces for placing the battery monomers 4 in the heat radiating frame; both sides of the heat conducting plate 3 are provided with battery contact surfaces to support the battery monomer 4 in the heat dissipation frame.

Above structure provides one at first and can install the support body structure of fixed a plurality of battery monomer 4, and when battery monomer 4 placed in the space that heat-conducting plate 3 formed, the battery contact surface of heat-conducting plate 3 covered battery monomer 4's terminal surface to the laminating supports battery monomer 4, makes battery monomer 4 stably place wherein.

Moreover, the heat conducting plate 3 covers the end face of the battery monomer 4, so that as shown by the dotted arrow in fig. 3, heat generated inside the battery monomer 4 can be transferred in all directions, and finally most of the heat is transferred to the heat dissipation side plate 1 for heat dissipation; in the heat dissipation process, the heat conduction plates 3 form a plurality of heat dissipation positions, and the periphery of the heat conduction plates 3 is subjected to heat dissipation to form heat dissipation and heat conduction in the first stage; the heat dissipation side plate 1 in contact with the heat conduction plate 3 is connected with the heat conduction plates 3, so that heat transmitted by the heat conduction plates 3 (equivalent to branch circuits) is transmitted to the heat dissipation side plate 1 (equivalent to a trunk circuit), and the heat dissipation and heat conduction in the second stage are formed in the outside.

The arrangement of the battery has the advantages that the heat conducting area, the heat conducting direction and the flow direction are increased, heat is led out from the internal battery monomer 4 in time, the heat radiating efficiency is improved, the performance of the battery monomer 4 is guaranteed, heat radiation is realized while the battery monomer 4 is installed, the effect of multiple purposes is achieved, and the production and manufacturing cost is reduced.

It should be understood that the bottom of the formed heat dissipation frame is fixedly connected with a supporting plate, and the supporting plate is a metal plate with heat dissipation;

or the bottom fixedly connected with spacing right angle spare of the heat dissipation frame that forms, spacing right angle spare be used for with battery monomer 4's angle laminating to prevent that battery monomer 4 from droing, this form need not dispel the heat the metal sheet, contacts with the outside air, is convenient for dispel the heat.

In some preferred embodiments, the heat-dissipating side plate 1 is provided with a vertical mounting chute, and the mounting chute facilitates the insertion of the heat-conducting plate 3 on the heat-dissipating side plate 1, thereby avoiding the welding fixation.

Referring to fig. 4, in some preferred embodiments, the heat-conducting plate 3 may be a single metal aluminum plate, and the heat-conducting plate 3 is provided with the following arrangement in view of enhancing the heat-conducting effect thereof:

the heat conducting plate 3 comprises two metal plates which are in sealed buckling connection, a plurality of runner grooves are formed in the metal plates, and metal powder sintering structures are arranged on the inner walls of the runner grooves; the plurality of runner grooves on the two metal plates are sealed and enclosed to form a plurality of heat exchange channels 30, and the heat exchange channels 30 are filled with heat circulation media.

After a heat circulation medium (such as deionized water or other liquid with a low boiling point and a high heat exchange coefficient) is filled in the heat exchange channel 30, vacuumizing treatment is performed, and sealing is performed through a welding process; therefore, the battery is rapidly cooled by utilizing the heat pipe principle, namely a plurality of heat exchange pipes are additionally arranged in the heat conduction plate 3, and the metal powder sintering structure is equivalent to the action of capillary wicks in the heat exchange pipes, so that the circulation of a heat circulation medium is enhanced.

Further, heat transfer passageway 30 includes evaporation zone 300 and condensation segment 301, and condensation segment 301 is located the top of evaporation zone 300, and this assurance evaporation zone 300 and condensation segment 301 do not carry out the heat transfer on same vertical height, and the make full use of gravity guarantees good heat transfer effect.

And one end of the condensation section 301 of each heat exchange channel 30, which is far away from the evaporation section 300, extends towards the heat dissipation side plate 1, so that the heat released by condensation of the condensation section 301 is transferred to the heat dissipation side plate 1, and further the heat transfer from the branch to the trunk is matched.

Further, the distribution mode of the heat exchange channels 30 is designed as follows:

firstly, the evaporation sections 300 of all the heat exchange channels 30 are vertically arranged and are uniformly distributed at intervals in the transverse direction of the heat conduction plate 3; the condensation section 301 is located above the evaporation section 300, the condensation section 301 is a circular arc, and the radius of the condensation section 301 is gradually increased in the transverse direction of the heat conducting plate 3.

Secondly, the heat conducting plate 3 is rectangular, the plurality of heat exchange channels 30 are divided into two parts which are symmetrical about the central line of the heat conducting plate 3, and the two parts respectively radiate heat to the corresponding radiating side plates 1; the evaporation sections 300 of the heat exchange channels 30 in each part are vertically arranged and are distributed at intervals in the transverse direction of the heat conducting plate 3; the condensation section 301 of the heat exchange channel 30 is a circular arc, and the radius of the condensation section 301 becomes gradually larger in the lateral direction of the heat conductive plate 3.

Through above two kinds of modes, a plurality of heat transfer passageways 30 have realized the structure of variable cross section, make its heat-sinking capability difference in upper and lower and left and right sides direction to adapt to the heat dissipation situation of battery in the in-service use, thereby solve the problem that the difference in temperature appears inside and outside the battery or from top to bottom easily, guarantee that the temperature of battery is even.

Referring to fig. 1 and 2, in some preferred embodiments, the following designs are provided for the structure of the radiating side plate 1:

firstly, the sectional areas of two ends of a radiating side plate 1 are equal;

secondly, the sectional area of the radiating side plate 1 is gradually reduced from one end to the other end. By the arrangement, the heat dissipation capacity of each part of the heat dissipation side plate 1 is matched with the heating condition of the battery, namely, the heat dissipation assembly is integrally arranged in one box body, the sectional area of the heat dissipation side plate 1 close to the air inlet is small, and the sectional area of the heat dissipation side plate 1 far away from the air inlet is small, so that the uniformity of the temperature in the box body is ensured.

Furthermore, a plurality of radiating fins 5 are arranged on the radiating side plate 1, and the radiating fins 5 extend along the length direction of the radiating side plate 1 to enhance the radiating effect.

Referring to fig. 1 and 2, in some preferred implementations, the heat dissipation assembly further includes an insulating pad 6, and the insulating pad 6 is disposed on a surface of the end plate 2 for contacting the battery cell 4 to prevent heat from being transferred to the end plate 2 for thermal isolation.

Referring to fig. 1 to 6, the present application also provides a battery pack including a plurality of the above heat dissipation assemblies, a plurality of battery cells 4, and a case 7.

The plurality of battery monomers 4 are arranged in the plurality of heat dissipation assemblies to form a plurality of battery modules, and the plurality of battery modules are connected in series and/or in parallel;

a plurality of battery modules are placed in the box body 7; along the length direction of the radiating side plate 1, an air inlet 8 and an air outlet 9 are respectively arranged at two ends of the box body 7, and the air inlet 8 is arranged at one end of the radiating side plate 1 with a smaller sectional area. Such an arrangement may allow for better air flow.

And the battery pack using the heat dissipation assembly has a good heat dissipation function, ensures the stability of the battery performance and prolongs the service life.

Furthermore, the air conditioner also comprises a cooling fan 10 and a temperature sensor which are arranged in the box body 7 and are arranged at one end of the air outlet 9; when the temperature sensor detects that the temperature in the box body 7 reaches the threshold value, the heat radiation fan 10 is started to blow out hot air in the box body, and cooling airflow is formed to continuously act on the heat radiation side plate 1.

That is, the heat dissipation assembly can also dissipate heat below the threshold, and the heat dissipation fan 10 is provided to enhance the heat dissipation capability.

The specific form shown in fig. 5 and 6 in the box 7 is:

two battery modules are arranged in one box body 7, and each battery module corresponds to one cooling fan 10, so that cooling is better realized.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. A radiator unit for installing battery module, its characterized in that, it includes:

two radiating side plates (1) which are arranged at intervals;

the end plates (2) are connected to two ends of the two radiating side plates (1) to form a radiating frame;

the heat-conducting plates (3) are distributed in the heat-radiating frame at intervals along the length direction of the heat-radiating side plate (1) and are connected with the heat-radiating side plate (1) so as to form a plurality of spaces for placing battery monomers (4) in the heat-radiating frame; and battery contact surfaces are arranged on two sides of the heat conducting plate (3) so as to support the battery monomer (4) in the heat dissipation frame.

2. The heat dissipating assembly for mounting a battery module according to claim 1, wherein:

the heat conducting plate (3) comprises two metal plates which are hermetically buckled, a plurality of runner grooves are formed in the metal plates, and metal powder sintering structures are arranged on the inner walls of the runner grooves;

a plurality of runner grooves on the two metal plates are sealed and enclosed to form a plurality of heat exchange channels (30), and heat circulation media are filled in the heat exchange channels (30).

3. The heat dissipating assembly for mounting a battery module according to claim 2, wherein:

the heat exchange channel (30) comprises an evaporation section (300) and a condensation section (301), the condensation section (301) is located above the evaporation section (300), and one end, far away from the evaporation section (300), of the condensation section (301) extends towards the heat dissipation side plate (1).

4. The heat dissipating assembly for mounting a battery module according to claim 3, wherein:

the evaporation sections (300) of all the heat exchange channels (30) are vertically arranged and are distributed at intervals in the transverse direction of the heat conduction plate (3);

the condensing sections (301) of all the heat exchange channels (30) are circular arcs, and the radius of the condensing sections (301) is gradually increased in the transverse direction of the heat conducting plate (3).

5. The heat dissipating assembly for mounting a battery module according to claim 3, wherein:

the heat conducting plate (3) is rectangular, and the plurality of heat exchange channels (30) are divided into two parts which are symmetrical about the central line of the heat conducting plate (3); the evaporation sections (300) of the heat exchange channels (30) in each part are vertically arranged and are distributed at intervals in the transverse direction of the heat conducting plate (3); the condensation section (301) of the heat exchange channel (30) is a circular arc, and the radius of the condensation section (301) is gradually increased in the transverse direction of the heat conducting plate (3).

6. The heat dissipating assembly for mounting a battery module according to claim 1, wherein:

the cross sections of the two ends of the heat dissipation side plate (1) are equal; or the like, or, alternatively,

the sectional area of the heat dissipation side plate (1) is gradually reduced from one end to the other end.

7. The heat dissipation assembly for mounting a battery module according to claim 1 or 6, wherein:

a plurality of radiating fins (5) are further arranged on the radiating side plate (1), and the radiating fins (5) extend along the length direction of the radiating side plate (1).

8. The heat dissipating assembly for mounting a battery module according to claim 1, wherein:

the battery pack further comprises a heat insulation pad (6), wherein the heat insulation pad (6) is arranged on the surface, used for being contacted with the battery monomer (4), of the end plate (2).

9. A battery pack, comprising:

a plurality of heat dissipation assemblies as recited in any one of claims 1-8; and (c) a second step of,

the battery single bodies (4) are arranged in the heat dissipation assemblies to form a plurality of battery modules, and the battery modules are connected in series and/or in parallel;

a case (7) in which a plurality of battery modules are placed; along heat dissipation curb plate (1) length direction, and be located the both ends of box (7) and be equipped with air intake (8) and air outlet (9) respectively, air intake (8) are located the one end that the cross-sectional area is less of heat dissipation curb plate (1).

10. The battery pack according to claim 9, wherein:

the air conditioner is also arranged in the box body (7), and a cooling fan (10) and a temperature sensor are arranged at one end of the air outlet (9); when the temperature sensor detects that the temperature in the box body (7) reaches a threshold value, the cooling fan (10) is started.