CN211376879U - Power battery liquid cooling device and power battery system - Google Patents
Power battery liquid cooling device and power battery system Download PDFInfo
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- CN211376879U CN211376879U CN201922075379.3U CN201922075379U CN211376879U CN 211376879 U CN211376879 U CN 211376879U CN 201922075379 U CN201922075379 U CN 201922075379U CN 211376879 U CN211376879 U CN 211376879U
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to the technical field of batteries, a power battery liquid cooling device and power battery system are disclosed, when power battery liquid cooling device carries out the heat exchange with electric core module, the coolant liquid flows through inlet side pipeline and liquid cooling runner from total water inlet in proper order earlier, so that the coolant liquid carries out the heat exchange with electric core module when flowing through liquid cold runner, after the heat exchange is accomplished to the coolant liquid, again via outlet side pipeline outflow total delivery port, in addition, through setting up a plurality of liquid cooling boards of arranging in proper order, because two adjacent liquid cooling boards pass through hose and three way connection intercommunication, be favorable to eliminating the stress between two adjacent liquid cooling boards, so that power battery liquid cooling device keeps the plane degree of preferred, thereby when making power battery liquid cooling device and electric core module carry out the heat exchange, power battery liquid cooling device can well contact with electric core module, avoided prior art to adopt hard tube connection liquid cooling board to lead to the whole plane degree of liquid cooling device poor and cause electric core module to compare Uneven heating of the group.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a power battery liquid cooling plant and power battery system.
Background
At present, automobile power battery systems are generally arranged below vehicle underbody and are subject to harsh installation environments and harsh working environments, and the power battery systems are provided with liquid cooling devices for heating or cooling the battery cell modules. The inventor finds that the existing liquid cooling device generally connects a plurality of liquid cooling plates through hard pipes to enable the plurality of liquid cooling plates to exchange heat with the battery cell module, but the liquid cooling device formed by connecting the liquid cooling plates through the hard pipes is poor in overall flatness, and the liquid cooling device is prone to deformation under severe working environments such as extrusion and collision for a long time in the driving process of a vehicle, so that the overall flatness of the liquid cooling device is poor, the liquid cooling device cannot be in good contact with the battery cell module, and the battery cell module is heated unevenly.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a power battery liquid cooling device and power battery system, it can avoid prior art to adopt the hard tube to connect the liquid cooling board to lead to the whole plane degree of liquid cooling device poor and cause the uneven problem of electric core module being heated.
In order to solve the technical problem, the utility model provides a power battery liquid cooling device, which comprises a main water inlet, a main water outlet, a plurality of liquid cooling plates, a plurality of first hoses and a plurality of second hoses; a liquid cooling runner is arranged in each liquid cooling plate, and the right end of each liquid cooling plate is communicated with the left end of the corresponding liquid cooling plate through the corresponding liquid cooling runner;
the liquid cooling plates are sequentially arranged, a first three-way joint is arranged at the right end of each liquid cooling plate, a second three-way joint is arranged at the left end of each liquid cooling plate, the right ends of two adjacent liquid cooling plates are communicated with the first hose through the first three-way joint to form a water inlet side pipeline, the left ends of two adjacent liquid cooling plates are communicated with the second hose through the second three-way joint to form a water outlet side pipeline, and the water inlet side pipeline and the water outlet side pipeline are oppositely arranged; the main water inlet is communicated with the front port of the water inlet side pipeline, the rear port of the water inlet side pipeline is sealed, the main water outlet is communicated with the front port of the water outlet side pipeline, and the rear port of the water outlet side pipeline is sealed.
Preferably, the water inlet side pipeline and the water outlet side pipeline are arranged in parallel.
Preferably, the first hose is a plastic hose or a rubber hose, and/or the second hose is a plastic hose or a rubber hose.
As the preferred scheme, the liquid cooling plate comprises an upper layer isolation plate, a middle cover plate and a lower shell, wherein one side of the middle cover plate is connected to the upper layer isolation plate, and the other side of the middle cover plate is connected to the lower shell and forms the liquid cooling flow channel with the lower shell.
Preferably, the lower shell is a stamped wavy structure.
In order to solve the same technical problem, the utility model also provides a power battery system, including electric core module, battery casing and power battery liquid cooling plant, electric core module with power battery liquid cooling plant locates on the battery casing, the liquid cooling board is located the below of electric core module.
Preferably, the battery shell comprises a double-layer bottom plate, a first step part and a second step part are arranged on the double-layer bottom plate, the front end of the liquid cooling plate is connected to the first step part, the rear end of the liquid cooling plate is connected to the second step part, and a joint between the liquid cooling plate and the first step part and a joint between the liquid cooling plate and the second step part are coated with first sealing heat-insulating glue.
Preferably, the double-layer bottom plate is internally provided with a cavity, and the cavity is internally provided with filler.
Preferably, the filler is a structurally reinforced foam.
Preferably, the power battery system further comprises a supporting layer, and the supporting layer is arranged between the double-layer bottom plate and the liquid cooling plate.
Preferably, the supporting layer is elastic supporting foam.
Preferably, the battery shell further comprises a left side longitudinal beam and a right side longitudinal beam, the left side longitudinal beam is connected to the left side of the double-layer bottom plate, and the right side longitudinal beam is connected to the right side of the double-layer bottom plate;
a first accommodating space is formed in the left side longitudinal beam, the water outlet side pipeline is accommodated in the first accommodating space, a second accommodating space is formed in the right side longitudinal beam, and the water inlet side pipeline is accommodated in the second accommodating space; the left end of liquid cooling board is connected on the longeron of left side, the right-hand member of liquid cooling board is connected on the longeron of right side, the liquid cooling board with the junction between the longeron of left side and the liquid cooling board with the junction coating between the longeron of right side has the sealed thermal-insulated glue of second.
Preferably, the battery shell further comprises a front end beam and a tail end beam, the front end beam is connected to the front side of the double-layer bottom plate, and the tail end beam is connected to the rear side of the double-layer bottom plate;
the power battery liquid cooling device further comprises a third hose and a fourth hose, the total water inlet and the total water outlet are arranged on the front end cross beam, the total water inlet is communicated with a front port of the water inlet side pipeline through the third hose, the total water outlet is communicated with a front port of the water outlet side pipeline through the fourth hose, a third accommodating space is formed in the front end cross beam, and the third hose and the fourth hose are accommodated in the third accommodating space.
The utility model provides a power battery liquid cooling device and power battery system, wherein, power battery liquid cooling device includes total water inlet, total delivery port, a plurality of liquid cooling board, a plurality of first hose and a plurality of second hose, all is equipped with the liquid cooling runner in each liquid cooling board, the right-hand member of liquid cooling board passes through the liquid cooling runner and communicates with the left end of liquid cooling board, and a plurality of liquid cooling board arrange in proper order, the right-hand member of two adjacent liquid cooling boards passes through first three way connection and first hose intercommunication to form the inlet side pipeline, the left end of two adjacent liquid cooling boards passes through second three way connection and second hose intercommunication to form the outlet side pipeline, inlet side pipeline and outlet side pipeline set up relatively; the main water inlet is communicated with the front port of the water inlet side pipeline, the rear port of the water inlet side pipeline is sealed, the main water outlet is communicated with the front port of the water outlet side pipeline, and the rear port of the water outlet side pipeline is sealed, so that when the power battery liquid cooling device is used for carrying out heat exchange with the battery cell module, cooling liquid firstly flows through the water inlet side pipeline and the liquid cooling runner from the main water inlet in sequence, so that the cooling liquid carries out heat exchange with the battery cell module when flowing through the liquid cooling runner, and flows out of the main water outlet through the water outlet side pipeline after the heat exchange of the cooling liquid is finished, in addition, by arranging a plurality of liquid cooling plates which are arranged in sequence, because two adjacent liquid cooling plates are communicated through the hose and the three-way joint, the stress between two adjacent liquid cooling plates is favorably eliminated, so that the power battery liquid cooling device keeps better planeness, and therefore, when the power battery, the power battery liquid cooling device can be in good contact with the battery cell module, and the problem that the battery cell module is heated unevenly due to the fact that the whole flatness of the liquid cooling device is poor due to the fact that the liquid cooling plate is connected with the hard tube in the prior art is solved.
Drawings
Fig. 1 is a schematic structural diagram of a power battery liquid cooling device in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a liquid cooling plate in an embodiment of the present invention;
fig. 3 is a cross-sectional view of a liquid cooled panel in an embodiment of the invention;
fig. 4 is a schematic structural diagram of a power battery system according to an embodiment of the present invention;
fig. 5 is an assembly diagram of the power battery liquid cooling device and the battery case in the embodiment of the present invention;
fig. 6 is an exploded view of the power battery liquid cooling device and the battery case in the embodiment of the present invention;
FIG. 7 is a top view of FIG. 5;
FIG. 8 is a cross-sectional view taken along A-A of FIG. 7;
FIG. 9 is an enlarged view of a portion of FIG. 8 at C;
FIG. 10 is a cross-sectional view taken along line B-B of FIG. 7;
FIG. 11 is an enlarged view of a portion of FIG. 10 at D;
fig. 12 is a schematic view illustrating an assembly of the liquid cooling plate and the double-layer bottom plate according to the embodiment of the present invention;
FIG. 13 is an enlarged view of a portion of FIG. 12 at E;
wherein, 10, a total water inlet; 20. a main water outlet; 1. a liquid-cooled plate; 11. an upper layer separator plate; 12. a middle cover plate; 13. a lower housing; 14. a liquid cooling flow passage; 15. a first three-way joint; 16. a second three-way joint; 2. a water inlet side pipeline; 21. a first hose; 3. a water outlet side pipeline; 31. a second hose; 4. a battery cell module; 5. a battery case; 51. a double-layer bottom plate; 511. a first floor beam; 512. a second floor beam; 513. a first step portion; 514. a second step portion; 515. a filler; 52. a left side stringer; 521. a first accommodating space; 53. a right side stringer; 54. a front end cross member; 541. a third accommodating space; 55. a tail cross beam; 61. a third hose; 62. a fourth hose; 71. a left corner splice; 72. a right corner splice; 73. front end corner splicing; 8. a support layer; 9. a thermally conductive layer.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model discloses an in the explanation, the description of upper and lower, left and right, preceding and back equal position and top and bottom is all injectd to fig. 1, and when power battery liquid cooling plant's the placing mode changed, its corresponding position and top and bottom description will also change according to the change of placing mode, the utility model discloses do not do here and describe repeatedly.
Referring to fig. 1 and 3 to 7, a power battery liquid cooling device according to a preferred embodiment of the present invention includes a main water inlet 10, a main water outlet 20, a plurality of liquid cooling plates 1, a plurality of first hoses 21, and a plurality of second hoses 31; a liquid cooling runner 14 is arranged in each liquid cooling plate 1, and the right end of each liquid cooling plate 1 is communicated with the left end of the corresponding liquid cooling plate 1 through the corresponding liquid cooling runner 14;
the liquid cooling plates 1 are sequentially arranged, a first three-way joint 15 is arranged at the right end of each liquid cooling plate 1, a second three-way joint 16 is arranged at the left end of each liquid cooling plate 1, the right ends of two adjacent liquid cooling plates 1 are communicated with the first hose 21 through the first three-way joints 15 to form a water inlet side pipeline 2, and the left ends of two adjacent liquid cooling plates 1 are communicated with the second hose 31 through the second three-way joints 16 to form a water outlet side pipeline 3; the main water inlet 10 is communicated with the front end port of the water inlet side pipeline 2, the rear end port of the water inlet side pipeline 2 is sealed, the main water outlet 20 is communicated with the front end port of the water outlet side pipeline 3, and the rear end port of the water outlet side pipeline 3 is sealed.
The embodiment of the utility model provides an in, when using power battery liquid cooling device and electric core module 4 to carry out the heat exchange, the coolant liquid flows through inlet side pipeline 2 and liquid cooling runner 14 from total water inlet 10 in proper order earlier, so that the coolant liquid carries out the heat exchange with electric core module 4 when flowing through liquid cooling runner 14, after the heat exchange is accomplished to the coolant liquid, via outlet side pipeline 3 outflow total delivery port 20 again, in addition, through setting up a plurality of liquid cooling plate 1 of arranging in proper order, because two adjacent liquid cooling plate 1 pass through hose and three way connection intercommunication, be favorable to eliminating the stress between two adjacent liquid cooling plate 1, so that power battery liquid cooling device keeps the plane degree of preferred, thereby when making power battery liquid cooling device and electric core module 4 carry out the heat exchange, power battery liquid cooling device can well contact with electric core module 4, the problem that the current art adopted hard tube to connect the liquid cooling plate to lead to the whole plane degree of liquid cooling device poor and cause electric core module to be heated unevenly has been avoided.
In a specific implementation, the first three-way joint 15 and the second three-way joint 16 are T-shaped three-way joints, and the first three-way joint 15 and the second three-way joint 16 can be welded on the liquid cooling plate 1; the front end port of the water inlet side pipeline 3 can be the end port of a first three-way joint 15 arranged on the liquid cooling plate 1 at the front end of the power battery liquid cooling device, and the front end port of the water outlet side pipeline 3 can be the end port of a second three-way joint 16 arranged on the liquid cooling plate 1 at the front end of the power battery liquid cooling device; the rear port of the water inlet side pipeline 2 can be a port of a first three-way joint 15 arranged on the liquid cooling plate 1 at the rear end of the power battery liquid cooling device, and the rear port of the water outlet side pipeline 3 can be a port of a second three-way joint 16 arranged on the liquid cooling plate 1 at the rear end of the power battery liquid cooling device; the rear end of the water inlet side pipeline 2 is closed, the rear end of the water outlet side pipeline 3 is closed, and particularly, the water inlet side pipeline and the water outlet side pipeline can be closed by using parts such as a plug and the like.
In addition, the whole flatness that prior art adopted the hard tube to connect the liquid cooling board to lead to the liquid cooling device is relatively poor, and this embodiment passes through first hose 21 with second hose 31 is connected on the liquid cooling board 1 first three way connection 15 with second three way connection 16 is favorable to eliminating the stress between two adjacent liquid cooling boards 1 to make power battery liquid cooling device keep the plane degree of preferred, non-deformable damages, thereby avoided liquid cooling board 1 to reveal damage electric core module 4, is favorable to prolonging power battery system's life-span.
In an alternative embodiment, in order to further ensure good contact between the power battery liquid cooling device and the battery cell module 4, the water inlet side pipe 2 and the water outlet side pipe 3 in this embodiment are arranged in parallel. Through intake side pipeline 2 with 3 parallel arrangement of play water side pipeline to make a plurality of arrange in proper order liquid cold drawing 1 with intake side pipeline 2 with play water side pipeline 3 atress is even, so that power battery liquid cooling device keeps the plane degree of preferred, thereby when making power battery liquid cooling device and electric core module 4 carry out the heat exchange, has further ensured power battery liquid cooling device and electric core module 4 good contact, is favorable to electric core module 4 to be heated evenly.
Referring to fig. 2 and 3, in order to improve the heat dissipation efficiency, the liquid cooling plate 1 in this embodiment includes an upper partition 11, an intermediate cover plate 12, and a lower housing 13, one side of the intermediate cover plate 12 is connected to the upper partition 11, and the other side of the intermediate cover plate 12 is connected to the lower housing 13 and forms the liquid cooling flow channel 14 with the lower housing 13. In prior art, through set up the division board between liquid cooling board and electric core module, and liquid cooling board and division board are two independent structures of separation usually, and this embodiment is through integrated division board in liquid cooling board 1, is showing and has reduced the thermal resistance between liquid cooling board and the division board to the radiating efficiency has been improved.
Preferably, the upper isolation plate 11 and the middle cover plate 12 are made of aluminum alloy plates, and the lower shell 13 is of a wavy structure formed by stamping, so that the size precision can be effectively guaranteed, and the flatness of the heat dissipation surface of the liquid cooling plate 1 can be guaranteed to the maximum extent. Lower casing 13 is through stamping forming, a plurality of liquid cooling runner 14 stamping forming simultaneously also, each the sectional area and the route of liquid cooling runner 14 can set up according to the in-service use requirement to guarantee the flow homogeneity of coolant liquid. In addition, the upper isolation plate 11, the middle cover plate 12 and the lower shell 13 are welded into a whole through a brazing technology, and the liquid cooling plate 1 is manufactured through a stamping process and the brazing technology, so that the liquid cooling plate 1 is high in strength, light in weight and simple in machining process. In practical application, different plate thicknesses can be designed according to simulation optimization design, and on the premise of meeting the strength requirement, the light weight of the product is realized.
Combine that fig. 4 to fig. 7 are shown, in order to solve the same technical problem, the utility model discloses still provide a power battery system, including electric core module 4, battery casing 5 and power battery liquid cooling plant, electric core module 4 with power battery liquid cooling plant locates on the battery casing 5, liquid cooling board 1 is located the below of electric core module 4. Through will liquid cold plate 1 locates the below of electricity core module 4 to make liquid cold plate 1 with electricity core module 4 carries out the heat exchange.
As shown in fig. 12 and 13, in order to improve the safety of the power battery system, the battery housing 5 in this embodiment includes a double-layer bottom plate 51, a first step portion 513 and a second step portion 514 are disposed on the double-layer bottom plate 51, the front end of the liquid cooling plate 1 is connected to the first step portion 513, the rear end of the liquid cooling plate 1 is connected to the second step portion 514, and a joint between the liquid cooling plate 1 and the first step portion 513 and a joint H between the liquid cooling plate 1 and the second step portion 514 are both coated with a first sealing and heat insulating glue; specifically, the liquid cooling plate 1 may be connected to the first stepped portion 513 and the second stepped portion 514 by caulking. Through setting up double-deck bottom plate 51 to prevent because of 5 collision deformations of battery housing cause the power battery liquid cooling device is inefficacy, has ensured electric core module 4 safety, thereby has improved power battery system's security, preferably, double-deck bottom plate 51 adopts double-deck crowded section bar of aluminium, can guarantee rigidity, and is right simultaneously 5 bottoms of battery housing protect liquid cold drawing 1 and electric core module 4. In addition, by providing the first step part 513 and the second step part 514 on the double-layer bottom plate 51, the liquid cooling plate 1 is connected to the first step part 513 and the second step part 514, and the first sealing and heat insulating glue is coated at the joint (i.e. the lap joint position), so that the heat insulation effect is achieved, the heat transfer of the lap joint surface of the battery housing 5 and the liquid cooling plate 1 is avoided, the energy consumption caused by the heat transfer of the battery housing 5 is reduced, the energy saving effect is achieved, and the sealing effect is achieved. In addition, a supporting layer 8 may be further disposed between the double-layer bottom plate 51 and the liquid cooling plate 1, preferably, the supporting layer 8 is an elastic supporting foam, so as to provide a supporting force for the liquid cooling plate 1, and ensure that the power battery liquid cooling device may also be in close contact with the battery cell module 4 in a vehicle driving process, so as to obtain a good heat dissipation effect for the battery cell module 4.
Referring to fig. 12, in order to improve the impact resistance of the double-layer bottom plate 51, in the embodiment, a cavity is formed in the double-layer bottom plate 51, a filler 515 is disposed in the cavity, and the filler 515 is preferably a structural reinforcing foam, in a specific implementation, an injection hole may be disposed on the double-layer bottom plate 51, and the structural reinforcing foam is injected into the cavity of the double-layer bottom plate 51 through the injection hole and filled, so as to improve the overall rigidity and strength of the double-layer bottom plate 51, thereby enhancing the impact resistance of the double-layer bottom plate 51, and avoiding the damage to the power battery cooling device and the battery cell module 4 caused by the double-layer bottom plate 51 being deformed due to collision and extrusion.
As shown in fig. 6, 10, 12, and 13, in order to simplify the structure, in an optional embodiment, the double-layer bottom plate 51 includes a first bottom plate beam 511 and a second bottom plate beam 512, the first bottom plate beam 511 and the second bottom plate beam 512 are both of a double-layer structure, the second bottom plate beam 512 is connected to the first bottom plate beam 511, the cell module 4 is mounted between the second bottom plate beams 512, and the first step portion 513 and the second step portion 514 may be disposed on the first bottom plate beam 511 and the second bottom plate beam 512.
As shown in fig. 5 to 9, in an alternative embodiment, the battery case 5 further includes a left side longitudinal beam 52 and a right side longitudinal beam 53, the left side longitudinal beam 52 is connected to the left side of the double-layer bottom plate 51, and the right side longitudinal beam 53 is connected to the right side of the double-layer bottom plate 51; a first accommodating space 521 is formed in the left side longitudinal beam 52, the water outlet side pipeline 3 is accommodated in the first accommodating space 521, a second accommodating space is formed in the right side longitudinal beam 53, and the water inlet side pipeline 2 is accommodated in the second accommodating space; the left end of the liquid cooling plate 1 is connected to the left side longitudinal beam 52, the right end of the liquid cooling plate 1 is connected to the right side longitudinal beam 53, and a second sealing and heat-insulating glue is coated on a joint G between the liquid cooling plate 1 and the left side longitudinal beam 52 and a joint between the liquid cooling plate 1 and the right side longitudinal beam 53.
In this embodiment, the water outlet side pipe 3 is accommodated in the first accommodating space 521, and the water inlet side pipe 2 is accommodated in the second accommodating space, that is, the battery case 5 and the water inlet side pipe 2, and the water outlet side pipe 3 are installed in the arrangement spaces reserved for the left side longitudinal beam 52 and the right side longitudinal beam 53 for isolation, and the second sealing and heat insulating glue is coated at the joint G between the liquid cooling plate 1 and the left side longitudinal beam 52 and the joint between the liquid cooling plate 1 and the right side longitudinal beam 53, so as to perform a heat insulating function, prevent heat transfer at the joint position between the liquid cooling plate 1 and the left side longitudinal beam 52 and the right side longitudinal beam 53, reduce energy consumption caused by the heat transfer of the battery case 5, and perform an energy saving function and a sealing function.
In addition, as shown in fig. 2 and 9, for convenience of installation, the upper partition plate 11 of the liquid cooling plate 1 may be designed to be slightly shorter than the middle cover plate 12 and the lower case 13, so that the left end of the liquid cooling plate 1 is spliced with the left side longitudinal beam 52, and the right end of the liquid cooling plate 1 is spliced with the right side longitudinal beam 53 and sealed by welding. The first sealing heat-insulating glue and the second sealing heat-insulating glue can be the same or different, and can be set according to actual use requirements, which is not described herein in further detail.
As shown in fig. 5 to 7, 10 and 11, in an alternative embodiment, the battery housing 5 further includes a front end beam 54 and a tail beam 55, the front end beam 54 is connected to the front side of the double-layer bottom plate 51, and the tail beam 55 is connected to the rear side of the double-layer bottom plate 51; the power battery liquid cooling device further comprises a third hose 61 and a fourth hose 62, the total water inlet 10 and the total water outlet 20 are arranged on the front end cross beam 54, the total water inlet 10 is communicated with the front port of the water inlet side pipeline 2 through the third hose 61, the total water outlet 20 is communicated with the front port of the water outlet side pipeline 3 through the fourth hose 62, a third accommodating space 541 is arranged on the front end cross beam 54, the third hose 61 and the fourth hose 62 are accommodated in the third accommodating space 541, that is, the third hose 61 and the fourth hose 62 are isolated in a reserved cavity of the front end cross beam 54, so that the third hose 61 and the fourth hose 62 are prevented from contacting with the battery shell 5 for heat transfer.
In specific implementation, the first hose 21 and the third hose 61 are respectively connected to the first three-way joint 15 of the liquid cooling plate 1 through quick connectors, the second hose 31 and the fourth hose 62 are respectively connected to the second three-way joint 16 of the liquid cooling plate 1 through quick connectors, the total water inlet 10 is connected to the third hose 61 through a quick connector, and the total water outlet 20 is connected to the fourth hose 62 through a quick connector. Preferably, the first hose 21, the second hose 31, the third hose 61 and the fourth hose 62 are plastic hoses or rubber hoses. In addition, for convenience of installation, a left corner splicing piece 71 is arranged between the tail cross beam 55 and the left side longitudinal beam 52, the tail cross beam 55 is connected with the left side longitudinal beam 52 through the left corner splicing piece 71, a right corner splicing piece 72 is arranged between the tail cross beam 55 and the right side longitudinal beam 53, the tail cross beam 55 is connected with the right side longitudinal beam 53 through the right corner splicing piece 72, front end splicing corners 73 are respectively arranged between the front end cross beam 54 and the left side longitudinal beam 52 and between the front end cross beam 54 and the right side longitudinal beam 53, and the front end cross beam 54 is connected with the left side longitudinal beam 52 and the right side longitudinal beam 53 through the front end splicing corners 73. In specific implementation, the left side longitudinal beam 52, the left corner splicing piece 71, the tail cross beam 55, the right corner splicing piece 72, the right side longitudinal beam 53, the front end splicing angle 73 and the front end cross beam 54 can be processed by aluminum extruded sections and are formed by welding, and a certain space is reserved in the extruded sections of the left side longitudinal beam 52, the right side longitudinal beam 53 and the front end cross beam 54 for placing the water outlet side pipeline 3, the water inlet side pipeline 2, the third hose 61 and the fourth hose 62.
Referring to fig. 12, in an alternative embodiment, in order to improve the heat dissipation efficiency, a heat conduction layer 9 is disposed between the liquid cooling plate 1 and the cell module 4, and preferably, the heat conduction layer 9 is a heat conduction pad or a heat conduction glue.
To sum up, the embodiment of the present invention provides a power battery liquid cooling device and a power battery system, wherein the power battery liquid cooling device includes a total water inlet 10, a total water outlet 20, a plurality of liquid cooling plates 1, a plurality of first hoses 21 and a plurality of second hoses 31, a liquid cooling runner 14 is disposed in each liquid cooling plate 1, the right end of the liquid cooling plate 1 is communicated with the left end of the liquid cooling plate 1 through the liquid cooling runner 14, the plurality of liquid cooling plates 1 are sequentially arranged, the right ends of two adjacent liquid cooling plates 1 are communicated with the first hoses 21 through a first three-way joint 15 to form a water inlet side pipeline 2, the left ends of two adjacent liquid cooling plates 1 are communicated with the second hoses 31 through a second three-way joint 16 to form a water outlet side pipeline 3, the total water inlet 10 is communicated with the front port of the water inlet side pipeline 2, the rear port of the water inlet side pipeline 2 is closed, the total water outlet 20 is communicated with the front port of the water outlet side pipeline 3, the rear port of the water outlet side pipeline 3 is sealed, thus, when the power battery liquid cooling device is used for carrying out heat exchange with the battery core module 4, the cooling liquid sequentially flows through the water inlet side pipeline 2 and the liquid cooling runner 14 from the total water inlet 10, so that the cooling liquid carries out heat exchange with the battery core module 4 when flowing through the liquid cooling runner 14, after the heat exchange is completed, the cooling liquid flows out of the total water outlet 20 through the water outlet side pipeline 3, in addition, the power battery liquid cooling device can be in good contact with the battery core module 4 by arranging a plurality of sequentially arranged liquid cooling plates 1, the stress between the two adjacent liquid cooling plates 1 is favorably eliminated, so that the power battery liquid cooling device keeps better flatness, the power battery liquid cooling device is enabled to be in heat exchange with the battery core module 4, the problem that the battery core module is heated and is not heated due to the fact that the integral flatness of the liquid cooling device is poor due to the fact that the liquid cooling plates are connected through hard pipes in the prior art is avoided All the above problems.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (13)
1. A power battery liquid cooling device is characterized by comprising a main water inlet, a main water outlet, a plurality of liquid cooling plates, a plurality of first hoses and a plurality of second hoses; a liquid cooling runner is arranged in each liquid cooling plate, and the right end of each liquid cooling plate is communicated with the left end of the corresponding liquid cooling plate through the corresponding liquid cooling runner;
the liquid cooling plates are sequentially arranged, a first three-way joint is arranged at the right end of each liquid cooling plate, a second three-way joint is arranged at the left end of each liquid cooling plate, the right ends of two adjacent liquid cooling plates are communicated with the first hose through the first three-way joint to form a water inlet side pipeline, the left ends of two adjacent liquid cooling plates are communicated with the second hose through the second three-way joint to form a water outlet side pipeline, and the water inlet side pipeline and the water outlet side pipeline are oppositely arranged; the main water inlet is communicated with the front port of the water inlet side pipeline, the rear port of the water inlet side pipeline is sealed, the main water outlet is communicated with the front port of the water outlet side pipeline, and the rear port of the water outlet side pipeline is sealed.
2. The power battery fluid-cooling device according to claim 1, wherein the water inlet-side pipe is arranged in parallel with the water outlet-side pipe.
3. The power battery fluid cooling device of claim 1, wherein the first hose is a plastic hose or a rubber hose, and/or the second hose is a plastic hose or a rubber hose.
4. The power battery liquid cooling device of any one of claims 1-3, wherein the liquid cooling plate comprises an upper partition plate, an intermediate cover plate and a lower housing, one side of the intermediate cover plate is connected to the upper partition plate, and the other side of the intermediate cover plate is connected to the lower housing and forms the liquid cooling flow passage with the lower housing.
5. The power battery hydrocooling apparatus of claim 4, wherein the lower housing is a stamped wave-shaped structure.
6. A power battery system, characterized by comprising a battery cell module, a battery shell and the power battery liquid cooling device as claimed in any one of claims 1 to 5, wherein the battery cell module and the power battery liquid cooling device are arranged on the battery shell, and the liquid cooling plate is arranged below the battery cell module.
7. The power battery system of claim 6, wherein the battery housing comprises a double-layer bottom plate, a first step portion and a second step portion are arranged on the double-layer bottom plate, the front end of the liquid cooling plate is connected to the first step portion, the rear end of the liquid cooling plate is connected to the second step portion, and a joint between the liquid cooling plate and the first step portion and a joint between the liquid cooling plate and the second step portion are coated with first sealing and heat insulating glue.
8. The power battery system of claim 7, wherein the double floor has a cavity therein, and wherein a filler is disposed in the cavity.
9. The power cell system of claim 8, wherein the filler is a structurally reinforced foam.
10. The power cell system of claim 7, further comprising a support layer disposed between the double-layer bottom plate and the liquid-cooled plate.
11. The power battery system of claim 10, wherein the support layer is a resilient support foam.
12. The power cell system of any of claims 7-11, wherein the cell housing further comprises a left side rail attached to a left side of the double floor and a right side rail attached to a right side of the double floor;
a first accommodating space is formed in the left side longitudinal beam, the water outlet side pipeline is accommodated in the first accommodating space, a second accommodating space is formed in the right side longitudinal beam, and the water inlet side pipeline is accommodated in the second accommodating space; the left end of liquid cooling board is connected on the longeron of left side, the right-hand member of liquid cooling board is connected on the longeron of right side, the liquid cooling board with the junction between the longeron of left side and the liquid cooling board with the junction coating between the longeron of right side has the sealed thermal-insulated glue of second.
13. The power cell system of any of claims 7-11, wherein the cell housing further comprises a front cross member attached to the front side of the double floor and a rear cross member attached to the rear side of the double floor;
the power battery liquid cooling device further comprises a third hose and a fourth hose, the total water inlet and the total water outlet are arranged on the front end cross beam, the total water inlet is communicated with a front port of the water inlet side pipeline through the third hose, the total water outlet is communicated with a front port of the water outlet side pipeline through the fourth hose, a third accommodating space is formed in the front end cross beam, and the third hose and the fourth hose are accommodated in the third accommodating space.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922075379.3U CN211376879U (en) | 2019-11-27 | 2019-11-27 | Power battery liquid cooling device and power battery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922075379.3U CN211376879U (en) | 2019-11-27 | 2019-11-27 | Power battery liquid cooling device and power battery system |
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| CN211376879U true CN211376879U (en) | 2020-08-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510300A (en) * | 2020-11-30 | 2021-03-16 | 湖南海博瑞德电智控制技术有限公司 | Modularized liquid-cooled battery system |
| CN113823871A (en) * | 2021-10-11 | 2021-12-21 | 宁波信泰机械有限公司 | Tray under integrated water cooling system's aluminium alloy battery box |
-
2019
- 2019-11-27 CN CN201922075379.3U patent/CN211376879U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510300A (en) * | 2020-11-30 | 2021-03-16 | 湖南海博瑞德电智控制技术有限公司 | Modularized liquid-cooled battery system |
| CN113823871A (en) * | 2021-10-11 | 2021-12-21 | 宁波信泰机械有限公司 | Tray under integrated water cooling system's aluminium alloy battery box |
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