CN114256532B - Cooling plate support and battery pack - Google Patents
Cooling plate support and battery pack Download PDFInfo
- Publication number
- CN114256532B CN114256532B CN202111443217.6A CN202111443217A CN114256532B CN 114256532 B CN114256532 B CN 114256532B CN 202111443217 A CN202111443217 A CN 202111443217A CN 114256532 B CN114256532 B CN 114256532B
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- Prior art keywords
- cooling plate
- interface
- support
- floating
- friction ring
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- 238000001816 cooling Methods 0.000 title claims abstract description 203
- 238000009434 installation Methods 0.000 claims abstract description 16
- 239000006258 conductive agent Substances 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000011900 installation process Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000011551 heat transfer agent Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a cooling plate support and a battery pack, wherein the cooling plate support is composed of a base and a floating support platform, the base is connected with a battery pack box body through a first interface, is connected with the floating support platform through a second interface and is fixedly connected with the cooling plate through a third interface, the floating support platform is composed of a support column and a friction ring, the support column comprises a support surface, a mounting hole, a groove and a fourth interface, the support surface is in contact with the mounting surface of the cooling plate, a cooling plate connecting piece passes through the mounting hole to fix the cooling plate, the friction ring is mounted in the groove, and the fourth connecting port is connected with the second connecting port. According to the invention, the plurality of cooling plates are used for supporting, so that each supporting column in the battery pack installation process can be respectively attached to the installation surface of the cooling plate, the problem that the flatness of the cooling plate is affected by accumulated errors of parts in the traditional support structure is avoided, heat conduction can be established between the battery pack module and the cooling plate by using a thinner heat conducting agent layer, and the weight and cost of the battery pack are reduced.
Description
Technical Field
The invention relates to the technical field of design of a cooling plate fixing structure of a power battery pack, in particular to a cooling plate support and a battery pack.
Background
The battery module generates heat during the charge and discharge operations, which must be dissipated in order to achieve a desired battery performance level, and conventional art means may dissipate the heat through the cooling plates to maintain the battery module at a proper temperature. The prior art needs to fill a heat conductive agent between a cooling plate and a battery module to improve heat transfer, and it is technically desirable to reduce the thickness of the heat conductive agent on the premise of sufficiently filling an air gap between the cooling plate and the battery module, since an increase in the filling thickness of the heat conductive agent reduces the heat transfer efficiency between the cooling plate and the battery module, and further increases the weight and cost of the battery pack.
In order to achieve longer endurance mileage of the electric automobile, a battery pack is generally provided with a double-layer module, and a second upper-layer module and a cooling plate are required to be fixed through a plurality of brackets; fixing the cooling plate further causes bending deformation of the cooling plate due to manufacturing process limitations and tolerance factors of the multi-layer structure installation, and the height of the cooling plate installation interface of the second upper layer module is not uniform. The second upper module and the above-described bent cooling plate require partial filling with a thicker heat conductive agent to establish heat conduction, and the thicker heat conductive agent causes an increase in weight and cost of the battery pack while reducing heat exchange efficiency. The heat transfer agent with uneven thickness causes inconsistent heat exchange efficiency in different areas, and further causes the temperature difference of the second upper module to be increased.
CN112670646a discloses a battery pack with a double-layer module structure, wherein the liquid cooling plate of the second upper layer module is mounted on a plurality of brackets, and the brackets are respectively fixed on the box body or the lower layer module; because tolerance stack-up probably leads to there being the difference in height between each mounting point of liquid cooling board, and then causes the fixed back planarization of liquid cooling board to not satisfy the design expectations, further influences the thermal management performance of second upper module.
CN109411656a is a compliant bracket that secures the battery array within the battery pack, bending the compliant bracket to reduce the gap between the battery array and the heat exchange plate when securing the battery array within the battery pack; bending or bending of the heat exchanger plates is avoided, thereby helping to reduce or eliminate gaps between the heat exchanger plates and other components, thereby improving thermal conductivity, and possibly reducing the required thermal interface material.
Disclosure of Invention
A first object of the present invention is to provide a cooling plate support, in which a cooling plate is fixedly mounted on a cooling plate support with a floating support platform, so that the cooling plate can fully contact the support platform before being compressed by a second fastening member, and the whole fastening process does not deform the cooling plate to fit the support platform, so as to avoid bending deformation of the cooling plate.
The second object of the present invention is to further provide a battery pack having the above cooling plate support, wherein the battery pack is provided with a double-layer module, the cooling plates of the second upper layer module are supported and fixed by a plurality of the above cooling plates, and the plurality of cooling plate supports can be respectively attached to the mounting surfaces of the cooling plates during the mounting process, so that the flatness of the cooling plates is prevented from being affected by accumulated errors of the multi-layer bracket structure, and the heat conduction is established by filling thinner heat conducting agent between the second upper layer module and the cooling plates.
In order to achieve the first object of the present invention, the present invention adopts the following technical scheme:
the utility model provides a cooling plate supports, cooling plate supports comprises base and floating supporting platform, the base is equipped with first interface, second interface and third interface, the base is connected with the support firmware that the cooling plate supported through first interface, is connected with floating supporting platform through the second interface, through third interface and cooling plate fixed connection, floating supporting platform comprises support column and friction ring, the support column includes holding surface, mounting hole, recess and fourth interface, the holding surface plays the effect of bearing cooling plate with the cooling plate installation face contact, the connecting piece of cooling plate passes the mounting hole and then realizes fixing to the cooling plate, the friction ring is installed in the recess of support column, the fourth connector is connected with the second connector of base.
The second interface is arranged coaxially with the third interface, the friction ring is connected with the groove in an adhesive or interference fit or welding mode, the inner diameter of the friction ring is smaller than the inner diameter of the mounting hole on the support column and smaller than the outer diameter of the connecting piece, the friction ring is made of rubber, the friction ring can deform radially and has resilience force, the connecting piece for fixing the cooling plate penetrates through the friction ring to force the friction ring to deform with increased inner diameter, and the friction ring generates resilience force to compress the outer wall surface of the connecting piece for fixing the cooling plate.
The connecting piece outer lane is equipped with first external screw thread, the third interface inner circle of base is equipped with first internal screw thread with first external screw thread assorted, the second interface outer lane of base is equipped with the second external screw thread, the fourth interface inner circle of floating supporting platform is equipped with the second internal screw thread with second external screw thread assorted.
The second external thread is screwed with the first internal thread but is not screwed tightly, and when the first unscrewing moment is applied to the floating support platform, the second internal thread can rotate relative to the second external thread, so that the floating support platform is lifted relative to the base.
The first internal thread and the second internal thread are opposite in spiral direction.
And a gap K is arranged between the cooling plate mounting surface and the supporting surface of the floating supporting platform in the initial mounting state of the cooling plate.
Specifically, in the technical scheme, the connecting piece of the fixed cooling plate passes through the friction ring through the mounting hole of the support column, the head of the connecting piece of the fixed cooling plate contacts the third interface of the base, the connecting piece of the fixed cooling plate is driven to rotate through the screwing tool, so that the first external thread is screwed with the first internal thread, and at the moment, the connecting piece of the fixed cooling plate moves in the direction of axially approaching the cooling plate; the connecting piece of the fixed cooling plate applies a second unscrewing moment to the floating support platform through the wall friction force of the friction ring in the rotating process; when the supporting surface of the supporting column of the floating supporting platform is not contacted with the mounting surface of the cooling plate, the second unscrewing moment is larger than the first unscrewing moment, the friction ring of the floating supporting platform and the connecting piece of the fixed cooling plate rotate in the same direction, the second internal thread of the floating supporting platform can rotate relative to the second external thread of the base, and the connecting piece of the fixed cooling plate rotates and drives the floating supporting platform to move in the direction approaching to the mounting surface of the cooling plate, and the friction ring axially slides relative to the connecting piece of the fixed cooling plate; when the support surface of the support column of the floating support platform contacts the mounting surface of the cooling plate, the axial movement of the floating support platform is limited, the second unscrewing moment is insufficient to drive the floating support platform to rotate, the friction ring slides relative to the connecting piece of the fixed cooling plate in the circumferential direction and the axial direction when the friction rings are the same, and the connecting piece of the fixed cooling plate continues to rotate until the target screwing moment; the connecting piece for fixing the cooling plate compresses the supporting surface of the supporting column of the floating supporting platform, and the cooling plate is supported and fixed on the premise that displacement is not applied, so that the initial flatness of the cooling plate in the installation state is ensured.
Further, in order to achieve the second object of the present invention, the present invention further provides a battery pack having the cooling plate support according to the above technical scheme, which includes a case body, a case cover, a second upper module, an upper cooling plate, a lower module, a cooling plate support, and a second fastener, wherein the lower module is mounted on the case body, a plurality of cooling plate supports are mounted on the lower module, the upper cooling plate is mounted on the cooling plate support, the second upper module is mounted above the upper cooling plate, and a heat conductive agent is filled between the second upper module and the upper cooling plate.
In the technical scheme, the heights of the mounting surfaces of the cooling plates of the plurality of cooling plate supports are deviated due to the common influence of manufacturing tolerances of the battery pack box body, manufacturing tolerances of the lower layer module and manufacturing tolerances of the cooling plate supports; the floating support platform supported by the cooling plate can adaptively adjust the height to be attached to the cooling plate in the screwing process of the second fastening piece, so that the influence of accumulated errors of the multi-layer support structure on the flatness of the cooling plate is avoided; therefore, thinner heat conducting agent can be filled between the second upper layer module and the cooling plate to establish heat conduction, the heat exchange performance of the battery pack is further improved while the consumption of the heat conducting agent is reduced, and the weight and the cost of the battery pack are reduced.
The invention has the beneficial effects that:
1. the gap between the cooling plate and the cooling plate support is adaptively filled in the tightening process of the second fastening piece, so that the cooling plate is prevented from being deformed after being compressed; ensuring that the cooling plate maintains an initial flatness in the mounted state. The heat transfer agent with uniform thickness brings the consistent heat exchange efficiency of the cooling plate, and further reduces the temperature difference of the battery module.
2. The process of adjusting the gap between the cooling plate and the cooling plate support does not add additional operational steps or procedures, simplifying the assembly process.
3. By maintaining the flatness of the cooling plate, thinner heat conductive agent is filled between the module and the cooling plate to establish heat conduction, heat exchange performance is further improved while the consumption of the heat conductive agent is reduced, and the weight and cost of the battery pack are reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a cooling plate support structure according to the present invention;
FIG. 2 is a cross-sectional view of the cooling plate support of FIG. 1;
FIG. 3 is a cross-sectional view of the floating support platform of the present invention;
FIG. 4 is a schematic view of the clearance between the cooling plate and the cooling plate support of the present invention;
FIG. 5 is a schematic illustration of a cooling plate support filling gap during installation of a cooling plate in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram II of the cooling plate support filling gap during installation of the cooling plate in accordance with an embodiment of the present invention;
FIG. 7 is a schematic diagram III of the principle of the cooling plate support filling gap during the mounting of the cooling plate in an embodiment of the invention;
fig. 8 is a schematic view of a structure of a battery pack according to an embodiment of the present invention;
fig. 9 is an enlarged schematic view of a partial structure of the battery pack of fig. 8;
FIG. 10 is a schematic view of an assembly of a cooling plate support and cooling plate according to an embodiment of the present invention;
FIG. 11 is a schematic view showing bending deformation of a conventional battery pack cooling plate during installation according to an embodiment of the present invention;
FIG. 12 is a second schematic view showing bending deformation during the installation of the cooling plate of the conventional battery pack according to the embodiment of the present invention;
fig. 13 is a schematic view showing bending deformation of the conventional battery pack cooling plate during installation in accordance with an embodiment of the present invention.
Reference numerals in the drawings illustrate: 11. a battery tray; 12. a bracket; 13. a liquid cooling plate; 14. a first fastener; 15. a first upper module; 2. a cooling plate support; 21. a base; 211. a first interface; 212. a second interface; 213. a third interface; 22. a cooling plate support platform; 221. a support column; 222. a friction ring; 2211. a support surface; 2212. a mounting hole; 2213. a groove; 2214. a fourth interface; 212a, a first upper plane; 2214a, upper end face; 3. a cooling plate; 31. a mounting surface; 32. a second upper plane; 4. a connecting piece; 41. a first external thread; 42. a second external thread; 43. a flange surface; 5. a battery pack; 51. a case; 52. a case cover; 53. a lower layer module; 54. an upper layer cooling plate; 55. a second upper module; 56. and a second fastener.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by one of ordinary skill in the art without inventive faculty, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
Example 1: see fig. 1-7.
As shown in fig. 1 and 2, a cooling plate support, cooling plate support (2) comprises base (21) and floating support platform (22), base (21) are equipped with first interface (211), second interface (212) and third interface (213), base (21) are connected with the support firmware of cooling plate support (2) through first interface (211), are connected with floating support platform (22) through second interface (212), are connected with cooling plate (3) through third interface (213) fixed connection, as shown in fig. 3, floating support platform (22) comprises support column (221) and friction ring (222), support column (221) are including holding surface (2211), mounting hole (2212), recess (2213) and fourth interface (2214), holding surface (2211) and cooling plate (3) installation face (31) contact and play the effect of bearing cooling plate, connecting piece (4) of cooling plate pass mounting hole (2212) and then realize the fixed to the cooling plate, friction ring (222) are installed in recess (221) and fourth interface (2214) in connection port (21) of support column (221).
The second interface (212) and the third interface (213) are coaxially arranged, the friction ring (222) and the groove (2213) are connected in an adhesive or interference fit or welding mode, the inner diameter of the friction ring (222) is smaller than the inner diameter of a mounting hole (2212) on the support column (221) and smaller than the outer diameter of the connecting piece (4), the friction ring (222) is made of rubber, and preferably, the friction ring (222) is made of EPDM rubber; the friction ring 222 is radially deformable and has a resilient force, and the connection member of the stationary cooling plate passes through the friction ring 222 to force the friction ring 222 to deform with an increased inner diameter, while the friction ring 222 generates a resilient force to press against the outer wall surface of the connection member of the stationary cooling plate.
As shown in fig. 4, in the initial installation state of the cooling plate (3), a gap K is provided between the installation surface (31) of the cooling plate (3) and the support surface (2211) of the floating support platform (22).
As shown in fig. 5-7, a first external thread (41) is arranged on the outer ring of the connecting piece (4), a first internal thread matched with the first external thread (41) is arranged on the inner ring of the third interface (213) of the base (21), a second external thread (42) is arranged on the outer ring of the second interface (212) of the base (21), a second internal thread matched with the second external thread (42) is arranged on the inner ring of the fourth interface (2214) of the floating support platform (22), and the first internal thread and the second internal thread have opposite screw directions; for example, the first internal thread is a right-handed thread, the second internal thread is a left-handed thread, the second external thread 42 is a left-handed thread coupled with the second internal thread, and the first external thread 41 is a right-handed thread coupled with the first internal thread.
Working principle: as shown in fig. 1-3, in the initial state, the floating support platform 22 is mounted on the second interface 212 of the base 21 through the fourth interface 2214, the second internal thread is screwed with the second external thread 42 but not screwed, and the first upper plane 212a of the second interface 212 of the base 21 contacts the upper end surface 2214a of the fourth interface 2214 of the floating support platform 22; the second internal threads will rotate relative to the second external threads 42 when the floating support platform 22 is applied with the first unscrewing torque, and the floating support platform 22 will be unscrewed and lifted relative to the base 21.
As shown in fig. 5, the connecting piece 4 of the fixed cooling plate passes through the friction ring 222 through the mounting hole 2212 of the supporting column 221, the connecting piece 4 of the fixed cooling plate is in clearance fit with the mounting hole 2212 of the supporting column 221, and the connecting piece 4 of the fixed cooling plate is in interference fit with the friction ring 222; the head of the connection 4 of the fixed cooling plate contacts the third interface 213 of the base 21. The connection member 4 for fixing the cooling plate passes through the friction ring 222 to force the friction ring 222 to deform with an increased inner diameter, and the friction ring 222 generates a repulsive force to press the outer surface of the connection member 4 for fixing the cooling plate. The first external screw thread 41 in this embodiment is a right-hand screw thread, and the connecting piece 4 for fixing the cooling plate is driven to rotate clockwise when viewed from the angle a from the top; the first external screw thread 41 is screwed with the first internal screw thread, and at this time, the connecting piece 4 for fixing the cooling plate moves downward during the screwing process; the rotation process of the connecting piece 4 for fixing the cooling plate applies a second unscrewing moment to the floating support platform 22 through the wall friction force of the friction ring 222; when the support surface 2211 of the support post 221 of the floating support platform 22 is not in contact with the mounting surface 31 of the cooling plate 3, the second unscrewing torque is greater than the first unscrewing torque, the friction ring 222 of the floating support platform 22 rotates in the same direction as the connecting piece 4 for fixing the cooling plate, the friction ring 222 further drives the second internal thread of the floating support platform 22 to rotate relative to the second external thread 42 of the base 21, and the floating support platform 22 is driven to rotate clockwise from the view angle a in a plan view.
The effect achieved is: the rotating action drives the floating support platform 22 to move in the direction approaching the mounting surface 31 of the cooling plate 3 when the connecting piece 4 for fixing the cooling plate is fastened, namely, the floating support platform 22 gradually rises to be close to the mounting surface 31 of the cooling plate 3, the connecting piece 4 for fixing the cooling plate moves downwards in the process, and the floating support platform 22 and the friction ring 222 move upwards; the friction ring 222 slides axially with respect to the connection 4 of the fixed cooling plate.
As shown in fig. 6, when the support surfaces 2211 of the support columns 221 of the floating support platform 22 contact the mounting surface 31 of the cooling plate 3, the axial movement of the floating support platform 22 is restricted, and the mounting surface 31 of the cooling plate 3 abuts against the floating support platform 22 to restrict the floating support platform 22 from further upward movement. The second unscrewing moment applied to the floating support platform 22 by the wall friction of the friction ring 222 during rotation of the fixed cooling plate connection 4 is insufficient to drive the floating support platform 22 to continue to rotate and move upwards, the friction ring 222 remains stationary during further rotation and downward movement of the fixed cooling plate connection 4, and the friction ring 222 slides circumferentially and axially relative to the fixed cooling plate connection 4 while the friction ring 222 is the same.
As shown in fig. 7, the connection 4 of the fixed cooling plate continues to rotate until the target tightening torque; the flange surface 43 of the connection piece 4 for fixing the cooling plate presses against the second upper plane 32 of the cooling plate 3, the cooling plate 3 and the floating support 22 being clamped by the connection piece 4 for fixing the cooling plate and the base 21.
As is apparent from the above description, in the case where the clearance K is provided between the mounting surface 31 of the cooling plate 3 and the support surface 2211 of the support post 221 of the floating support platform 22 of the cooling plate support 2 in the initial mounted state, the floating support platform 22 can be driven to be raised during fastening of the connection member 4 for fixing the cooling plate so as to be adaptively attached to the mounting surface 31 of the cooling plate 3, thereby ensuring that the cooling plate 3 is supported by the cooling plate support 2 without being subjected to deformation displacement while being pressed and fixed by the connection member 4 for fixing the cooling plate 3, thereby ensuring that the cooling plate 3 maintains initial flatness during mounting.
Example 2: see fig. 8-13.
As shown in fig. 8 to 10, a battery pack, which is specifically provided with the cooling plate support as described in embodiment 1, includes a case body 51, a case cover 52, a second upper module 55, an upper cooling plate 54, a lower module 53, a cooling plate support 2, and second fasteners 56, the lower module 53 is mounted on the case body 51, a plurality of cooling plate supports 2 are mounted on the lower module 53, an upper cooling plate 54 is mounted on the cooling plate support 2, the second upper module 55 is mounted above the upper cooling plate 54, and a heat transfer agent is filled between the second upper module 55 and the upper cooling plate 54.
11-13 are schematic diagrams showing bending deformation of a conventional battery pack cooling plate during installation, a plurality of brackets 12 are installed above a battery tray 11 of a conventional battery pack, and a liquid cooling plate 13 is fixed on the brackets 12 through a plurality of fasteners 14; a heat conducting agent is filled between the bottom surface of the first upper layer module 15 and the upper surface of the liquid cooling plate 13 to realize heat transfer between the first upper layer module 15 and the liquid cooling plate 13; due to the manufacturing error of the tray 11 and the height error of the brackets 12, a height difference H exists between the upper planes of the respective brackets 12; the liquid cooling plates 13 are fixed to the upper planes of the brackets 12 by the fasteners 14, the lower surfaces of the liquid cooling plates 13 are attached to the upper planes of the brackets 12, and the liquid cooling plates 13 are subjected to bending deformation as shown in fig. 12, and the deformation amount is H; as shown in fig. 13, the target thickness of the heat transfer agent filled between the first upper module 15 and the liquid cooling plate 13 is T, and the local deformation amount is H due to the bending deformation of the liquid cooling plate 13, and the thickness of the heat transfer agent filled between the first upper module 15 and the liquid cooling plate 13 becomes uneven, and the local thickness increases to t+h. The heat transfer agent with uneven thickness causes inconsistent heat exchange efficiency in different areas, and further causes the temperature difference of the first upper module 15 to be increased; thicker heat conductive agents result in increased weight and cost of the battery pack while reducing heat exchange efficiency.
Also, in the present embodiment, there is a deviation in the heights of the cooling plate mounting surfaces of the plurality of cooling plate supports 2 due to the common influence of the manufacturing tolerance of the case 51, the manufacturing tolerance of the lower module 53, and the manufacturing tolerance of the cooling plate supports 2.
As shown in fig. 10, the mounting surfaces of the plurality of cooling plate supports 2 have an initial height difference h, and the floating support platform 22 of the cooling plate support 2 can adaptively adjust the height to be attached to the upper cooling plate 54 in the screwing process of the second fastening piece 56, so that the influence of the accumulated error of the multi-layer bracket structure on the flatness of the upper cooling plate 54 is avoided; thereby realizing that thinner heat conductive agent is filled between the upper module 55 and the upper cooling plate 54 to establish heat conduction, further improving heat exchange performance while reducing consumption of the heat conductive agent, improving temperature uniformity of the upper module 55, and simultaneously reducing weight and cost of the battery pack 5.
The above description is only of the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention fall within the technical scope of the present invention.
Claims (4)
1. The cooling plate support is characterized in that the cooling plate support (2) is composed of a base (21) and a floating support platform (22), the base (21) is provided with a first interface (211), a second interface (212) and a third interface (213), the base (21) is connected with a support firmware of the cooling plate support (2) through the first interface (211), is connected with the floating support platform (22) through the second interface (212), is fixedly connected with the cooling plate (3) through the third interface (213), the floating support platform (22) is composed of a support column (221) and a friction ring (222), the support column (221) comprises a support surface (2211), a mounting hole (2212), a groove (2213) and a fourth interface (2214), the support surface (2211) is in contact with the cooling plate (3), a connecting piece (4) of the cooling plate passes through the mounting hole (2212) to further realize the fixing of the cooling plate, the friction ring (222) is mounted in a groove (3) of the support column (221), and the fourth interface (2214) is connected with the base (212);
the outer ring of the connecting piece (4) is provided with a first external thread (41), the inner ring of the third interface (213) of the base (21) is provided with a first internal thread matched with the first external thread (41), the outer ring of the second interface (212) of the base (21) is provided with a second external thread (42), and the inner ring of the fourth interface (2214) of the floating support platform (22) is provided with a second internal thread matched with the second external thread (42);
the second external thread (42) is screwed with the first internal thread but is not screwed tightly, and when a first unscrewing moment is applied to the floating support platform (22), the second internal thread rotates relative to the second external thread, so that the floating support platform (22) is lifted relative to the base (21);
in the initial installation state of the cooling plate (3), a gap K is arranged between the installation surface (31) of the cooling plate (3) and the supporting surface (2211) of the floating supporting platform (22).
2. A cooling plate support according to claim 1, wherein the second interface (212) and the third interface (213) are coaxially arranged, the friction ring (222) and the groove (2213) are connected by means of adhesion, interference fit or welding, the inner diameter of the friction ring (222) is smaller than the inner diameter of the mounting hole (2212) on the support column (221) and smaller than the outer diameter of the connecting piece (4), and the friction ring (222) is made of rubber.
3. A cooling plate support according to claim 1, wherein the first internal thread is of opposite helical direction to the second internal thread.
4. A battery pack having the cooling plate support according to any one of claims 1 to 3, comprising a case body (51), a case cover (52), a second upper module (55), an upper cooling plate (54), a lower module (53), a cooling plate support (2) and a second fastener (56), wherein the lower module (53) is mounted on the case body (51), a plurality of cooling plate supports (2) are mounted on the lower module (53), the upper cooling plate (54) is mounted on the cooling plate support (2), the second upper module (55) is mounted above the upper cooling plate (54), and a heat conductive agent is filled between the second upper module (55) and the upper cooling plate (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111443217.6A CN114256532B (en) | 2021-11-30 | 2021-11-30 | Cooling plate support and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111443217.6A CN114256532B (en) | 2021-11-30 | 2021-11-30 | Cooling plate support and battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114256532A CN114256532A (en) | 2022-03-29 |
| CN114256532B true CN114256532B (en) | 2023-12-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111443217.6A Active CN114256532B (en) | 2021-11-30 | 2021-11-30 | Cooling plate support and battery pack |
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| JP2009238644A (en) * | 2008-03-27 | 2009-10-15 | Sanyo Electric Co Ltd | Power source device for vehicle |
| CN108075059A (en) * | 2016-11-09 | 2018-05-25 | 江森自控科技公司 | Battery pack with fan component |
| CN209389082U (en) * | 2018-11-23 | 2019-09-13 | 比亚迪股份有限公司 | A kind of battery pack, power battery and electric vehicle |
| CN209496985U (en) * | 2019-04-25 | 2019-10-15 | 江铃汽车股份有限公司 | Heat management device and automobile |
| CN110335975A (en) * | 2019-07-10 | 2019-10-15 | 扬州道爵新能源发展有限公司 | A kind of batteries of electric automobile packet |
| CN212209566U (en) * | 2020-04-20 | 2020-12-22 | 黄河交通学院 | Heat radiation structure of lithium battery pack for electric automobile |
| WO2021210717A1 (en) * | 2020-04-14 | 2021-10-21 | 에너테크인터내셔널 주식회사 | Electric car battery pack having improved cooling performance |
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| JP2009238644A (en) * | 2008-03-27 | 2009-10-15 | Sanyo Electric Co Ltd | Power source device for vehicle |
| CN108075059A (en) * | 2016-11-09 | 2018-05-25 | 江森自控科技公司 | Battery pack with fan component |
| CN209389082U (en) * | 2018-11-23 | 2019-09-13 | 比亚迪股份有限公司 | A kind of battery pack, power battery and electric vehicle |
| CN209496985U (en) * | 2019-04-25 | 2019-10-15 | 江铃汽车股份有限公司 | Heat management device and automobile |
| CN110335975A (en) * | 2019-07-10 | 2019-10-15 | 扬州道爵新能源发展有限公司 | A kind of batteries of electric automobile packet |
| WO2021210717A1 (en) * | 2020-04-14 | 2021-10-21 | 에너테크인터내셔널 주식회사 | Electric car battery pack having improved cooling performance |
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| CN114256532A (en) | 2022-03-29 |
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