CN219759782U - Lightweight battery system structure - Google Patents
Lightweight battery system structure Download PDFInfo
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- CN219759782U CN219759782U CN202320458417.7U CN202320458417U CN219759782U CN 219759782 U CN219759782 U CN 219759782U CN 202320458417 U CN202320458417 U CN 202320458417U CN 219759782 U CN219759782 U CN 219759782U
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- water
- plate
- cooling plate
- box body
- battery system
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000001816 cooling Methods 0.000 claims abstract description 58
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 4
- 239000008397 galvanized steel Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a lightweight battery system structure, which comprises a box body, a box cover, a water cooling plate, a module, a bottom guard plate and a buffer heat insulation pad, wherein the module is fixed with the box body and positioned above the water cooling plate, the bottom guard plate is arranged at the bottom of the box body, the buffer heat insulation pad is embedded between the water cooling plate and the bottom plate, the module consists of end plates, electric cores and side plates, the electric cores are mutually restrained to form a whole through the front end plates, the rear end plates and the left side plates and the right side plates after being mutually fixed, the water cooling plate consists of an upper cover plate, a water inlet joint, a water outlet joint and a runner plate, the upper cover plate of the water cooling plate is welded with the runner plate, a water inlet runner and a water outlet runner are formed on the runner plate in a stamping mode, a first water way parallel point for dividing a water way into two is arranged at the water inlet position of the water inlet runner or the water outlet position of the water outlet runner, and a second water way parallel point for dividing the water way into two is arranged on one of the first water way parallel point after the first water way is divided into two. The utility model effectively solves the problem of light weight and improves the energy density of the battery system.
Description
Technical field:
the utility model relates to a lightweight battery system structure, and belongs to the technical field of power batteries.
The background technology is as follows:
in the composition of the electric vehicle, the weight of the power battery system is not lower than 30% of the whole vehicle, and the cruising ability of the electric vehicle can be seriously affected by the weight of the power battery. Currently, energy density, endurance, energy consumption and safety are the important directions of attention of the whole vehicle. The battery system with higher energy density is developed, the energy consumption is reduced, the carbon emission of the automobile is reduced, the endurance mileage of the electric vehicle is improved, and the use cost of the battery can be reduced to the greatest extent.
Therefore, the light weight of the power battery system has a very important meaning.
The utility model comprises the following steps:
the present utility model has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present utility model is to provide a lightweight battery system structure that can effectively solve the lightweight problem and increase the energy density of the battery system.
The utility model adopts the technical scheme that: the utility model provides a lightweight battery system structure, includes the box, is fixed in the case lid on box upper portion, is fixed in the inside water-cooling board of box, is fixed in with the box and be located the module of water-cooling board top together, install in the end backplate of box bottom and inlay the buffering heat insulating mattress in the middle of water-cooling board and end backplate, the module comprises end plate, electric core and curb plate, electric core is arranged after fixing each other around through end plate and the curb plate mutual constraint of controlling one-tenth in front and back, the water-cooling board comprises upper cover plate, water inlet joint, water outlet joint and runner board, the upper cover plate and the runner board welding of water-cooling board are in the same place, stamping forming has inlet runner and outlet runner on the runner board, inlet runner's water position or outlet runner's water position all are equipped with the first water route parallel connection point of dividing the water route into two the first water route parallel connection point divide into two back one of two water routes on be equipped with the second water route parallel connection point of dividing the water route into two again.
Further, a circle of water-cooling plate fixing beams for fixing the water-cooling plate are integrally formed on the inner side wall of the bottom of the box body.
Further, two spaced end plate fixing beams are welded in the width direction of the water cooling plate fixing beam, mounting holes are formed in the end plate fixing beam, and the modules are fixed on the box body through the cooperation of bolts and the mounting holes.
Further, the flange edges around the water cooling plate and the water cooling plate fixing beam are welded together through friction stir welding.
Further, the water-cooling plate material is a three-series aluminum alloy.
Further, heat conduction structural adhesive is smeared on the upper cover plate of the water cooling plate, the heat conduction coefficient of the heat conduction structural adhesive is 2.0 (W/m.K), and the bottom of the battery cell of the module is fixedly adhered to the heat conduction structural adhesive.
Further, the buffer heat insulation pad is foamed silica gel, and the heat conductivity coefficient is 0.04 (W/m.K).
Further, HC420/780DPD+Z high strength galvanized steel sheet was used for the bottom guard plate.
The utility model has the following beneficial effects:
(1) The box body is made of aluminum alloy materials, and the welding adopts friction stir welding and argon arc welding, so that the welding strength is ensured, the box cover is made of a composite material, carbon fibers are filled in the box body, the strength is high, and deformation is not easy to generate.
(2) The water cooling plate is integrated in the box body, the bottom of the battery cell is completely contacted with the water cooling plate, the refrigerating effect is obvious, the temperature of the battery cell is not more than 45 ℃, the service life of the battery cell is prolonged, and the battery cell can be used in an disfiguring environment
(3) The design scheme of the three-row large module reduces the use of parts, improves the space utilization rate, integrates the water cooling plates, has a box body structure and a frame structure, has simple production and manufacturing procedures, reduces the labor cost, and is suitable for mass production due to the mold forming of the bottom guard plate, the water cooling plates and the box cover.
Description of the drawings:
fig. 1 is a schematic view of a lightweight battery system according to the present utility model.
FIG. 2 is a schematic view of a water cooled plate.
FIG. 3 is a schematic view of a flow field plate.
FIG. 4 is a schematic diagram of a module.
Fig. 5 is a schematic diagram of a case.
The specific embodiment is as follows:
the utility model is further described below with reference to the accompanying drawings.
The utility model discloses a lightweight battery system structure, which comprises a box body 3, a box cover 1 fixed on the upper part of the box body 3 through bolts, a water cooling plate 4 welded in the box body 3, a module 2 fixed with the box body 3 through bolts and positioned above the water cooling plate 4, a bottom guard plate 6 arranged on the bottom of the box body 3 through bolts, and a buffer heat insulation pad 5 inlaid between the water cooling plate 4 and the bottom guard plate 6.
The box body 3 is formed by mutually splicing aluminum alloy sections and welding the aluminum alloy sections into a frame similar to a return shape in a friction stir welding and argon arc welding mode, and the frame plays a role in bearing. A circle of water-cooling plate fixing beams 16 are integrally formed on the inner side wall of the bottom of the box body 3 and are used for installing and fixing the water-cooling plates 4.
Two spaced end plate fixing beams 17 are welded on the water cooling plate fixing beam 16 in the width direction, so that on one hand, the strength of the box body 3 is enhanced, on the other hand, mounting holes (not shown) are formed in the end plate fixing beams 17, and the module 2 is fixed on the box body 3 through the cooperation of bolts and the mounting holes.
The module 2 comprises end plate 13, electric core 14 and curb plate 15, and electric core 14 is fixed each other through fore-and-aft scribbles structural adhesive to restraint each other through end plate 13 and the curb plate 15 of controlling from front to back and form a whole, the both ends and the both ends laser welding of controlling of end plate 13 are in the same place at this moment about the curb plate 15, increase the intensity of structure. The utility model adopts a design scheme of three rows of large modules, and integrates the original three modules on one module, thereby effectively reducing the use of parts, lightening the weight of the system and improving the utilization rate of space.
The water cooling plate 4 is made of three-system aluminum alloy, and consists of an upper cover plate 7, a water inlet joint 8, a water outlet joint 9 and a runner plate 10, wherein the upper cover plate 7 and the runner plate 10 of the water cooling plate 4 are welded by brazing, and the water inlet joint 8 and the water outlet joint 9 are welded by flame welding. The runner of the water cooling plate 4 is punched into a protruding cavity by adopting a die, and the runner can be designed arbitrarily according to actual use conditions. In the utility model, the water inlet flow channel and the water outlet flow channel of the water cooling plate 4 are symmetrically designed, and the water inlet or water outlet position is provided with a first waterway parallel connection point 11 which divides the waterway into two parts. The first waterway parallel connection point 11 is divided into two, one waterway is provided with the second waterway parallel connection point 12, the second waterway parallel connection point 12 divides the waterway into two, the waterway parallel connection point is equivalent to that the water inlet end or the water outlet end are all three waterways in parallel, and the whole loop is connected in series in a C shape. The water cooling plate 4 has the advantages of large contact area of the battery cell and good heat exchange effect.
The flange edges around the water cooling plate 4 are welded with the water cooling plate fixing beams 16 inside the box body 3 through friction stir welding, so that a finished battery box body is formed, the water cooling plate 4 and the battery box body are integrated, the space utilization rate is improved, and the battery box body can bear modules and has a heat dissipation function. The upper cover plate 7 of the water cooling plate 4 is coated with heat conduction structural adhesive, the heat conduction coefficient of the heat conduction structural adhesive is 2.0 (W/m.K), the bottom of the battery cell 14 of the module 2 is in contact fixation with the heat conduction structural adhesive, so that the heat of the battery cell is conducted on the water cooling plate 4 through the heat conduction structural adhesive, and the heat generated by the module is taken out of the battery pack.
According to the lightweight battery system structure, the water cooling plate 4 and the battery box body are integrated, the water cooling is integrated, the internal space is saved, the space utilization rate is improved, meanwhile, the battery core can be completely contacted with the water cooling plate, heat generated by the battery core can be completely taken out, the influence of the battery performance caused by the overhigh temperature of the battery is avoided, the safety of the battery system is improved, meanwhile, the buffer heat insulation pad 5 is arranged at the bottom of the water cooling plate, the heat conductivity coefficient is about 0.04 (W/m.K), the battery pack can buffer the impact of the box body on the water cooling plate under the condition of high vibration, and the battery pack has a heat insulation effect and can prevent the heat loss of the water cooling plate. The front end of the water cooling plate is respectively provided with a water inlet joint and a water outlet joint, which is convenient for water cooling pipeline connection.
The middle bottom guard plate is made of high-strength galvanized steel plates, is formed by stamping a bottom guard plate die and is mounted at the bottom of a battery box body through bolts, has high strength, can be sprayed with a 1.5mmPVC coating, can effectively protect the impact of broken stones at the bottom of a battery pack, and provides protection for battery safety.
The cover 1 of the utility model is made of SMC composite material with the density of 1.95g/mm 3 About, compare with traditional punching press panel beating, weight can reduce about 25% to case lid preparation mould integrated into one piece provides convenience for the batch production.
The middle bottom guard plate 6 is made of HC420/780DPD+Z high-strength galvanized steel plate, the thickness is only 1mm, the bottom guard plate is formed by stamping through a die, the strength is high, a 1.5mm PVC coating can be sprayed, impact of broken stone at the bottom of a battery pack can be effectively protected, and protection is provided for battery safety.
The foregoing is merely a preferred embodiment of the utility model, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the utility model, which modifications would also be considered to be within the scope of the utility model.
Claims (8)
1. A lightweight battery system structure characterized by: the water-cooling device comprises a box body (3), a box cover (1) fixed on the upper portion of the box body (3), a water-cooling plate (4) fixed inside the box body (3), a module (2) fixed with the box body (3) and located above the water-cooling plate (4), a bottom guard plate (6) arranged at the bottom of the box body (3) and a buffer heat insulation pad (5) embedded in the middle of the water-cooling plate (4) and the bottom guard plate (6), wherein the module (2) is composed of an end plate (13), an electric core (14) and a side plate (15), the electric cores (14) are mutually restrained to form a whole through the end plate (13) and the left side plate and the right side plate (15) which are mutually fixed, the water-cooling plate (4) is composed of an upper cover plate (7), a water inlet joint (8), a water outlet joint (9) and a runner plate (10), a water inlet runner and a water outlet runner are formed by stamping forming on the upper cover plate (7) of the water-cooling plate (3), or the water inlet and the water outlet runner are respectively connected in parallel with a water channel (11) at a first water inlet and a second water outlet position and a second water channel (11) which is connected in parallel with the water inlet and a second water outlet position and a water outlet position which is respectively connected in parallel with the water channel (11.
2. The lightweight battery system architecture of claim 1, wherein: a circle of water-cooling plate fixing beams (16) for fixing the water-cooling plate (4) are integrally formed on the inner side wall of the bottom of the box body (3).
3. The lightweight battery system architecture of claim 2, wherein: two spaced end plate fixing beams (17) are welded in the width direction of the water cooling plate fixing beam (16), mounting holes are formed in the end plate fixing beams (17), and the module (2) is fixed on the box body (3) through the cooperation of bolts and the mounting holes.
4. The lightweight battery system architecture of claim 2, wherein: the flange edges around the water cooling plate (4) and the water cooling plate fixing beams (16) are welded together through friction stir welding.
5. The lightweight battery system architecture of claim 1, wherein: the water cooling plate (4) is made of three-series aluminum alloy.
6. The lightweight battery system architecture of claim 1, wherein: and heat conduction structural adhesive is smeared on the upper cover plate (7) of the water cooling plate (4), the heat conduction coefficient of the heat conduction structural adhesive is 2.0 (W/m.K), and the bottom of the battery cell (14) of the module (2) is fixedly adhered to the heat conduction structural adhesive.
7. The lightweight battery system architecture of claim 1, wherein: the buffer heat insulation pad (5) is made of foamed silica gel, and the heat conductivity coefficient is 0.04 (W/m.K).
8. The lightweight battery system architecture of claim 1, wherein: the bottom guard plate (6) is made of HC420/780DPD+Z high-strength galvanized steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320458417.7U CN219759782U (en) | 2023-03-13 | 2023-03-13 | Lightweight battery system structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320458417.7U CN219759782U (en) | 2023-03-13 | 2023-03-13 | Lightweight battery system structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219759782U true CN219759782U (en) | 2023-09-26 |
Family
ID=88083904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320458417.7U Active CN219759782U (en) | 2023-03-13 | 2023-03-13 | Lightweight battery system structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219759782U (en) |
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2023
- 2023-03-13 CN CN202320458417.7U patent/CN219759782U/en active Active
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