CN221353081U - Battery box and battery pack - Google Patents
Battery box and battery pack Download PDFInfo
- Publication number
- CN221353081U CN221353081U CN202323239348.XU CN202323239348U CN221353081U CN 221353081 U CN221353081 U CN 221353081U CN 202323239348 U CN202323239348 U CN 202323239348U CN 221353081 U CN221353081 U CN 221353081U
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- Prior art keywords
- plate
- battery
- side beam
- liquid cooling
- box body
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- 238000001816 cooling Methods 0.000 claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery box and a battery pack. The battery box comprises an upper box body and a lower box body matched with the upper box body, a battery space is defined in the lower box body, the lower box body comprises a side plate and a bottom plate, the bottom plate comprises a liquid cooling plate with a main liquid cooling channel, the side plate comprises a front plate, a rear plate and two side beams fixedly connected with the front plate and the rear plate, each side beam comprises a side beam vertical plate, a plurality of vertical plate cavities are arranged in the side beam vertical plate at intervals along the height direction of the side beam, the vertical plate cavities extend to the rear end from the front end of the side beam, a plurality of rib plates separated by the vertical plate cavities are upwards and/or downwards obliquely arranged, and the distance between adjacent rib plates at the bottom of the side beam bottom vertical plate is smaller than that of adjacent rib plates at the top of the side beam vertical plate. The utility model can improve the structural strength and rigidity of the whole battery system.
Description
Technical Field
The utility model relates to the technical field of battery boxes, in particular to a battery box body and a battery pack.
Background
At present, in the transportation field, an electric logistics vehicle is gradually put into use to replace a traditional fuel vehicle so as to achieve the aims of environmental protection and energy conservation. The battery system is a key part of the electric logistics vehicle and provides power for the whole vehicle. The battery system generally comprises a battery pack, a battery pack management module, a battery box and corresponding accessories. Because of cost and space pressure, the battery pack, battery pack management module and corresponding accessories are all required to be installed in the battery box. The conventional battery box body is complex in general design and heavy in weight. In order to simplify the design of the vehicle body mounting beam, the battery system adopts a hoisting mode, which puts higher requirements on the rigidity and vibration resistance of the battery box body, so that a novel battery box body capable of meeting the use requirements is provided, and the novel battery box body is very necessary.
Disclosure of utility model
The present utility model is directed to solving the above-mentioned problems of the prior art, and provides a battery case and a battery pack having high rigidity and vibration resistance, and reduced relative weight.
The technical scheme adopted for realizing the purpose of the utility model is as follows:
In one aspect of the utility model, a battery box is provided, comprising an upper box body and a lower box body matched with the upper box body, wherein a battery space is defined in the lower box body, the lower box body comprises a side plate and a bottom plate, the bottom plate comprises a liquid cooling plate with a main liquid cooling channel, the side plate comprises a front plate, a rear plate and two side beams fixedly connecting the front plate and the rear plate, each side beam comprises a side beam vertical plate, a plurality of vertical plate cavities are arranged in the side beam vertical plate at intervals along the height direction of the side beam, the plurality of vertical plate cavities extend from the front end to the rear end of the side beam, the rib plates separating the plurality of vertical plate cavities are obliquely arranged upwards and/or downwards, and the distance between adjacent rib plates at the bottom of the side beam vertical plate is smaller than the distance between adjacent rib plates near the top of the side beam vertical plate.
The side beam comprises a side beam vertical plate, a side beam vertical plate and a side beam bottom plate, wherein the side beam vertical plate is vertically connected with the side beam bottom plate and is L-shaped, and one side of the side beam bottom plate away from the side beam vertical plate is fixedly connected with the liquid cooling plate;
The bottom ends of the side beam vertical plates are connected with the side beam bottom plate through a non-cavity solid structure.
The top of the side beam is provided with a side beam flange surface matched with an upper box body side flange surface at the bottom of the upper box body;
The outer side surface of the side beam vertical plate is provided with a plurality of hanging plates at intervals along the length direction of the side beam, a cavity structure is formed between the outer side surfaces of the side beam vertical plates, the middle part of each hanging plate is provided with a plane part parallel to the outer side surface of the side beam vertical plate, and each plane part is provided with a screw sleeve hole for connecting with a frame through bolts so as to fix the battery box body to the frame;
The upper end of the plane part is connected with the flange surface of the side beam through an L-shaped part, the lower end of the inclined surface part connected with the lower end of the plane part is connected with the bottom of the outer surface of the side beam vertical plate, and the two sides of the plane part are connected with the outer surface of the side beam vertical plate through side connecting plates;
The outer surface of the side beam vertical plate is also provided with bonding points which are arranged between the two hoisting plates.
The inner side surface of the side beam is provided with a bracket mounting block, and the bracket mounting block is provided with a screw sleeve hole for connecting the battery module with the bracket mounting block through a bolt;
The side beams are of an integrally formed structure.
The lower box body is internally provided with a module installation beam at the middle part of the top end of the liquid cooling plate, and a plurality of screw sleeve holes are arranged on the module installation beam and are used for being matched with bolt holes on the battery module, and the battery module is fixed through bolts.
The rear plate is provided with a rear vertical plate and a rear bottom plate connected with the rear vertical plate, the rear bottom plate is L-shaped, the rear bottom plate is arranged at the upper end of the liquid cooling plate, and a plurality of screw sleeve holes are formed in the rear bottom plate and are used for being matched with bolt holes in the battery module, and the battery module is fixed through bolts.
The front end and the rear end of the liquid cooling plate are respectively provided with a liquid cooling plate plugging plate, water nozzles are arranged on the liquid cooling plate plugging plates near the front plate, and the front plate, the liquid cooling plate plugging plates, the side beams and the rear plate are in sealing and welding connection.
The top ends of the front plate and the rear plate are respectively provided with a front plate flange surface and a rear plate flange surface which are matched with the front side flange surface and the rear side flange surface of the bottom end of the upper box body; the upper box body and the lower box body are matched through flange faces and then bolted, and sealing rings are arranged between the upper box body and the lower box body.
The side beam bottom plate is internally provided with a bottom plate cavity, the bottom plate cavity is used as an auxiliary liquid cooling channel, the auxiliary liquid cooling channel and the main liquid cooling channel form a liquid cooling channel of the battery box body, and the liquid cooling channel is communicated with a water nozzle on a liquid cooling plate plugging plate at the bottom of the front plate to form a liquid cooling system of the battery box body.
In another aspect of the present utility model, a battery pack is provided, including the battery case.
According to the side beam of the battery box body, the side beam vertical plates are internally provided with the plurality of cavities which are arranged at intervals along the height direction of the side beam, the plurality of cavities extend to the rear end from the front end of the side beam, the rib plates which are separated by the plurality of cavities are arranged obliquely upwards and/or downwards, the weight of the box body is reduced through the arrangement of the cavities, meanwhile, the rib plates are arranged obliquely upwards and/or downwards, the distance between inclined ribs below the side beam vertical plates is smaller, and the joint of the side beam vertical plates and the side beam bottom plate is of a solid structure, so that the strength of the battery box body in the Y direction is improved;
According to the battery box, the bracket mounting blocks are arranged in the battery box, so that the battery module can be connected with the bracket mounting blocks of the battery box through the brackets, and the battery module and the battery box form a whole through the bracket mounting blocks, so that the structural strength and rigidity of the whole battery system are improved.
Drawings
Fig. 1 is a schematic view of a battery case according to an embodiment of the present utility model.
Fig. 2 is a schematic cross-sectional view of a battery case according to an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a side member according to an embodiment of the present utility model.
In the figure:
1-a front plate; 2-a liquid cooling plate plugging plate; 3-a water nozzle; 4-side beams; 5-module mounting beams; 6-liquid cooling plate; 7-a back plate; 8-a bracket mounting block; 9-upper box body; 41-side sill floor; 42-side beam risers; 43-side beam flange face; 44-hanging plate; 45-bonding point; 46-a bottom plate cavity; 47-rib plates; 48-a vertical plate cavity; 49-non-cavity solid structure; 441 planar portion; 442-L-shaped part; 443-inclined plane part; 444-side connection plates; 91-upper box flange face.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 3, the battery box structure of the embodiment of the utility model includes an upper box 9 and a lower box matched with the upper box 9, the lower part of the upper box 9 is opened, the top of the lower box 9 is opened, the upper box 2 is buckled and connected with the lower box, a battery space is defined in the lower box to accommodate and place a battery module, the lower box includes a side plate and a bottom plate, the bottom plate includes a liquid cooling plate 6 with a main liquid cooling channel therein, and the side plate includes a front plate 1, a rear plate 7, and two side beams 4 fixedly connecting the front plate 1 and the rear plate 7.
Preferably, the side beam 4 is of an integrally molded structure, and is formed by a side beam vertical plate 42 and a side beam bottom plate 41, the side beam vertical plate and the side beam bottom plate are vertically connected to form an L-shaped structure, one side of the side beam bottom plate far away from the side beam vertical plate is fixedly connected with the longitudinal side of the liquid cooling plate 6 by welding, a plurality of vertical plate cavities 48 are arranged in the side beam vertical plate at intervals along the height direction of the side beam, the plurality of vertical plate cavities 48 extend from the front end to the rear end of the side beam 4, a plurality of rib plates 47 separating the vertical plate cavities are obliquely arranged upwards and/or downwards, the bottom end of the side beam vertical plate 42 is connected with the side beam bottom plate 41 through a non-cavity solid structure 49, and more preferably, the distance between adjacent rib plates near the bottom of the side beam vertical plate is smaller than the distance between adjacent rib plates near the top of the side beam vertical plate.
In the embodiment of the application, the inclined ribs in different directions are arranged in the side beam vertical plates 42, the interval between the inclined ribs below the side beam vertical plates 42 is smaller, and the connecting part of the side beam vertical plates 42 and the side beam bottom plate 41 is in a solid non-cavity structure, so that the weight of the battery box body is reduced, the strength of the battery box body in the Y direction is improved, and the problem of rigidity reduction of the battery box body due to the structure of the cavity is avoided.
The outer side surface of the side beam vertical plate 42 is provided with a plurality of hanging plates 44 at intervals along the length direction of the side beam, a cavity structure is formed between the hanging plates and the outer surface of the side beam vertical plate 42, the middle part of each hanging plate 44 is provided with a plane part 441 parallel to the outer side surface of the side beam vertical plate, and the plane parts 441 are prefabricated with screw sleeve holes, so that the battery box body can be fixed on a frame through the connection of bolts and the frame, and the battery box body and the frame are fixed and stabilized.
The top of the side beam 4 has a side beam flange surface 43 matching with a side flange surface of an upper box flange surface 91 at the bottom of the upper box 9, wherein the top ends of the front plate and the rear plate are respectively provided with a front plate flange surface and a rear plate flange surface matching with front and rear side flange surfaces at the bottom of the upper box, the upper end of the plane portion 441 is connected with the side beam flange surface by an L-shaped portion 442, the lower end of a slope portion 443 connecting the lower end of the plane portion 443 is connected with the bottom of the outer surface of the side beam vertical plate, two sides of the plane portion 441 are connected with the outer surface of the side beam vertical plate by a side connecting plate 444, and the plane portion 441 is connected and fixed with the side beam by the slope portion 441 and the L-shaped portion 442, so that the hanging plate and the side beam form an integrated structure, thereby improving the box strength to adapt to the installation requirement of the hanging of the battery box, and providing effective support for the upper box 9 to support the whole battery box and the weight of the internal battery module.
In addition, an attachment point 45 is provided on the outer surface of the side sill riser 42, disposed between the two hanger plates 44, and disposed near the front panel 1, as shown in fig. 3.
In the above embodiment, the side beam flange surface 43 may be set to have different widths according to the requirement, and is matched with the upper case side flange surface of the bottom of the upper case, so as to meet the requirement of sealing the case. The lifting plate 44 is connected with the side beam flange surface 43, and a cavity structure is formed between the lifting plate and the outer surface of the side beam vertical plate, and the cavity structure has stronger rigidity and can provide effective support for the upper box 9.
The inner side surface of the side beam 4 is provided with a bracket mounting block 8, and the bracket mounting block 8 is provided with a screw sleeve hole for connecting the battery module with the bracket mounting block through a bolt. Preferably, the bracket mounting block 8 is welded on the inner surface of the side beam 4, on which a screw sleeve can be arranged, so that the battery module in the battery box body can be connected with the bracket mounting block 8 through the bracket, and is integrated with the battery box body through the bracket mounting block 8, thereby improving the structural strength and rigidity of the whole battery system.
In some embodiments, the module mounting beam 5 is disposed in the middle of the top end of the liquid cooling plate in the lower box, a plurality of screw holes are disposed on the module mounting beam, the axis direction of the screw holes is perpendicular to the liquid cooling plate and used for being matched with bolt holes on the battery module, the battery module is fixed through bolts, further, the rear plate 7 is provided with a rear vertical plate 71 and a rear bottom plate 72 connected with the rear vertical plate, the rear bottom plate 72 is of an L-shaped structure, the rear bottom plate 72 is disposed at the upper end of the liquid cooling plate, a plurality of screw holes are disposed on the rear bottom plate perpendicular to the rear bottom plate and used for being matched with the bolt holes on the battery module, and the battery module is fixed through bolts. The rear plate 7 and the module mounting beam 5 of the battery box body are provided with a plurality of threaded sleeves, the threaded sleeves are matched with bolt through holes of the shell of the battery module, and the battery module and the lower box body are connected and fixed inside through the matching of the plurality of bolts and the threaded sleeves.
In some embodiments, the front end and the rear end of the liquid cooling plate 6 are respectively provided with a liquid cooling plate plugging plate 2 (only the liquid cooling plate plugging plate at the front end is shown in fig. 1), the liquid cooling plate plugging plate 2 near the front plate is provided with two water nozzles 3, one is a water inlet nozzle, one water outlet nozzle, the two water nozzles 3 are connected with a cooling system of the whole vehicle through a water pipe, cooling liquid is led into the liquid cooling plate by the water inlet nozzle and then led out by the other water outlet nozzle, and flows in the liquid cooling plate to form a cooling system at the bottom of an electric core of the battery module, and the front plate, the liquid cooling plate plugging plate, the side beams and the rear plate are connected together in a sealing and welding manner.
In one embodiment, the front plate 1, the liquid cooling plate 6, the rear plate 7 and the side beams 4 are all of aluminum profile structures, so that the weight of the battery box body can be further reduced, and components such as a high-voltage connector, a low-voltage communication connector, a manual maintenance switch mounting hole and the like can be arranged on the front plate 1 according to specific requirements.
In the embodiment of the application, the upper box body and the lower box body are fixedly bolted through the connecting bolts after being matched through the flange surfaces, and sealing rings or sealing strips distributed in a surrounding manner are arranged between the upper box body and the lower box body for sealing, so that a sealed cavity is formed in the battery box body, and the sealing strips can be welded at the bottom of the flange surface of the upper box body in advance, and can be directly pressed with the lower box body to form a sealing structure during assembly.
In one embodiment, the side beam bottom plate 41 is provided with a bottom plate cavity 46 inside, the bottom plate cavity is used as an auxiliary liquid cooling channel, and forms a liquid cooling channel of the battery box together with the main liquid cooling channel inside the liquid cooling plate, and the liquid cooling channel is communicated with the water nozzle on the liquid cooling plate plugging plate of the front plate to form a liquid cooling system of the battery box so as to realize the introduction of cooling liquid to cool the battery cells. The two bottom plate cavities are at least two, preferably, the two bottom plate cavities are identical in size, are adjacently arranged and are of an equal-width cavity structure, and are connected with the liquid cooling plate 6 at the bottom, and the liquid cooling plate plugging plates 2 are connected together through welding to form a liquid cooling system of the battery box body.
In some embodiments, the side beam bottom plate 41 and the liquid cooling plate 6 at the bottom are coated with insulating material on the upper surface, and the insulating and stone-impact-resistant material is coated on the lower part, so as to ensure the insulation and heat preservation performance of the whole battery box.
The battery box body provided by the utility model has scientific structural design, and the overall strength of the battery box body is improved through the design of the side beam cavity; through box support installation piece, make battery module and battery box can connect and form a whole for the battery system that uses this battery box has stronger rigidity and anti-vibration performance. In addition, the battery box structure provided by the utility model has the advantages that the whole box body adopts a high-strength aluminum profile welding process, the structure is compact, the manufacturability is strong, and the positioning size is accurate.
In another aspect of the present utility model, a battery pack is provided, which includes the battery case, in which a corresponding battery module is disposed. The battery box body of the battery pack realizes the improvement of the integral strength of the battery box body through the design of the side beam cavity; through box support installation piece, make battery module and battery box can connect and form a whole for the battery system that uses this battery box has stronger rigidity and anti-vibration performance. In addition, the battery box structure provided by the utility model has the advantages that the whole box body adopts a high-strength aluminum profile welding process, the structure is compact, the manufacturability is strong, and the positioning size is accurate.
While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof;
The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The battery box body comprises an upper box body and a lower box body matched with the upper box body, a battery space is defined in the lower box body, the lower box body comprises a side plate and a bottom plate, the bottom plate comprises a liquid cooling plate with a main liquid cooling channel, the side plate comprises a front plate, a rear plate and two side beams fixedly connected with the front plate and the rear plate, the battery box body is characterized in that the side beams comprise side beam vertical plates, a plurality of vertical plate cavities are arranged in the side beam vertical plates at intervals along the height direction of the side beams, the vertical plate cavities extend to the rear end from the front end of the side beams, the rib plates separated by the vertical plate cavities are arranged in an upward and/or downward inclined mode, and the distance between adjacent rib plates at the bottom of the side beam vertical plates is smaller than that between adjacent rib plates near the top of the side beam vertical plates.
2. The battery box of claim 1, wherein the side rail further comprises a side rail bottom plate, the side rail vertical plate and the side rail bottom plate are vertically connected and are L-shaped, and one side of the side rail bottom plate away from the side rail vertical plate is fixedly connected with the liquid cooling plate; the bottom ends of the side beam vertical plates are connected with the side beam bottom plate through a non-cavity solid structure.
3. The battery case according to claim 2, wherein the top of the side member has a side member flange surface that mates with an upper case side flange surface of the upper case bottom; the outer side surface of the side beam vertical plate is provided with a plurality of hanging plates at intervals along the length direction of the side beam, the hanging plates and the outer surface of the side beam vertical plate form a cavity structure, the middle part of each hanging plate is provided with a plane part parallel to the outer side surface of the side beam vertical plate, and each plane part is provided with a screw sleeve hole for connecting with a frame through bolts so as to fix the battery box body on the frame;
The upper end of the plane part is connected with the flange surface of the side beam through an L-shaped part, the lower end of the inclined surface part connected with the lower end of the plane part is connected with the bottom of the outer surface of the side beam vertical plate, and the two sides of the plane part are connected with the outer surface of the side beam vertical plate through side connecting plates;
The outer surface of the side beam vertical plate is also provided with bonding points which are arranged between the two hoisting plates.
4. The battery case according to claim 3, wherein a bracket mounting block is disposed on an inner side surface of the side member, and a screw hole is disposed on the bracket mounting block for connecting the battery module with the bracket mounting block by a bolt; the side beams are of an integrally formed structure.
5. The battery box according to claim 1, wherein a module mounting beam is provided in the middle of the bottom plate in the lower box body, and a plurality of screw holes are arranged on the module mounting beam for being matched with the bolt holes on the battery module, and the battery module is fixed by bolts.
6. The battery box according to claim 1, wherein the rear plate is provided with a rear vertical plate, a rear bottom plate connected with the rear vertical plate is L-shaped, the rear bottom plate is arranged at the upper end of the liquid cooling plate, and a plurality of screw sleeve holes are formed in the rear bottom plate and are used for being matched with bolt holes in the battery module, and the battery module is fixed through bolts.
7. The battery box according to claim 1, wherein liquid cooling plate plugging plates are arranged at the front end and the rear end of the liquid cooling plate, water nozzles are arranged on the liquid cooling plate plugging plates near the front plate, and the front plate, the liquid cooling plate plugging plates, the side beams and the rear plate are welded together in a sealing manner.
8. The battery case according to claim 1, wherein the top ends of the front and rear plates are respectively provided with a front plate flange surface and a rear plate flange surface which are matched with the front and rear side flange surfaces of the bottom end of the upper case, the upper case and the lower case are bolted after being matched with each other by the flange surfaces, and a sealing ring is arranged between the upper case and the lower case.
9. The battery box according to claim 1, wherein the bottom plate of the side beam is internally provided with a bottom plate cavity, the bottom plate cavity is used as an auxiliary liquid cooling channel, the main liquid cooling channel and the main liquid cooling channel form a liquid cooling channel of the battery box, and the liquid cooling channel is communicated with a water nozzle on a liquid cooling plate plugging plate at the bottom of the front plate to form a liquid cooling system of the battery box.
10. A battery pack comprising the battery case of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323239348.XU CN221353081U (en) | 2023-11-30 | 2023-11-30 | Battery box and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323239348.XU CN221353081U (en) | 2023-11-30 | 2023-11-30 | Battery box and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221353081U true CN221353081U (en) | 2024-07-16 |
Family
ID=91838994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323239348.XU Active CN221353081U (en) | 2023-11-30 | 2023-11-30 | Battery box and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221353081U (en) |
-
2023
- 2023-11-30 CN CN202323239348.XU patent/CN221353081U/en active Active
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