CN215816019U - Battery pack box and battery pack - Google Patents
Battery pack box and battery pack Download PDFInfo
- Publication number
- CN215816019U CN215816019U CN202121251211.4U CN202121251211U CN215816019U CN 215816019 U CN215816019 U CN 215816019U CN 202121251211 U CN202121251211 U CN 202121251211U CN 215816019 U CN215816019 U CN 215816019U
- Authority
- CN
- China
- Prior art keywords
- battery pack
- liquid cooling
- plate
- liquid
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The utility model is suitable for the technical field of batteries, and provides a battery pack box body and a battery pack, comprising a lower box body, wherein the lower box body comprises: the battery module comprises a frame, a liquid cooling plate, a bottom protection plate and a beam body, wherein the frame is connected to the edge of the bottom protection plate, the frame and the bottom protection plate are surrounded to form a containing cavity, the beam body is installed in the containing cavity, the containing cavity is divided into a plurality of module cavities by the beam body, and the module cavities are used for containing battery modules; the beam body is provided with the portion of extending, and the portion of extending is used for supporting battery module. The battery pack box can reduce the impact force on the convex part 15 and the liquid cooling plate, better protect the liquid cooling runner, and avoid the deformation or damage of the liquid cooling main runner and the liquid cooling sub-runner to a certain extent.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery pack box body and a battery pack.
Background
Among the prior art, in order to save the inner space of battery package box, partial battery package box is integrated the frame of box and the bottom plate of box with the liquid cooling runner, but, when the battery package box received the striking of external article, frame and bottom plate can take place deformation, if the liquid cooling runner sets up at frame or bottom plate, the deformation of frame and bottom plate can make the liquid cooling runner warp to block up and reveal even to influence the normal work of battery package.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide a battery pack box body, and aims to solve the technical problem that a liquid cooling flow channel is deformed or leaked due to the fact that a battery pack is easy to damage due to impact in the prior art.
In order to achieve the purpose, the utility model adopts the technical scheme that: provided is a battery pack case, including a lower case, the lower case includes: the frame is connected to the edge of the bottom guard plate, the frame and the bottom guard plate are surrounded to form an accommodating cavity, the beam body is installed in the accommodating cavity, the accommodating cavity is divided into a plurality of module cavities by the beam body, the module cavities are used for accommodating battery modules, the frame is provided with a protruding part protruding towards the accommodating cavity, a liquid cooling main runner is arranged in the protruding part, the liquid cooling plate is located in the accommodating cavity and connected with the frame, a liquid cooling sub-runner is arranged in the liquid cooling plate, and the liquid cooling sub-runner is communicated with the main runner; the beam body is provided with the portion of extending, the portion of extending is used for supporting the battery module.
Through adopting above-mentioned technical scheme, set up the liquid cooling sprue in the inboard region of frame, set up the liquid cooling board in the holding chamber, explain also that the liquid cooling board is located end backplate top, consequently when the battery package box bore the impact force in the outside, bear the impact force that comes from the side by the lateral surface of frame, and bear the impact force that comes from the bottom by end backplate, play better guard action to the liquid cooling board. After being applied to the battery package with the battery package box, the battery module is placed in the module intracavity, and the battery module is supported by the extension portion of the roof beam body to reduce the pressure of battery module to the liquid cooling board. To sum up, the impact force that reducible bulge 15 and liquid cooling board received, better protection liquid cold runner avoids also liquid cooling sprue and liquid cooling subchannel deformation or damage to a certain extent.
In one embodiment, a gap is formed between the liquid cooling plate and the bottom protection plate, the battery pack box further comprises a support member, the support member is located in the gap, and two ends of the support member are respectively in contact with the bottom protection plate and the liquid cooling plate.
Through adopting above-mentioned technical scheme, because liquid cold plate and end have the clearance between the backplate, consequently liquid cold plate and end backplate are not direct contact, receive when the backplate receives the impact and take place deformation, and is less relatively to the influence of liquid cold plate. Because the supporting piece is arranged between the liquid cooling plate and the bottom protection plate, stronger supporting force is provided for the liquid cooling plate.
In one embodiment, the supporting member includes a fixing portion and a buffering portion, one end of the fixing portion is connected to the bottom protection plate, the other end of the fixing portion is connected to the buffering portion, and the buffering portion is in contact with the liquid cooling plate.
Through adopting above-mentioned technical scheme, when the backplate received the impact at the end, partial impact force is via support piece to the transmission of liquid cooling plate, and partial impact force is absorbed in buffer portion department to reduce the impact force that the liquid cooling plate received.
In one embodiment, the frame and the liquid cooling plate are welded into a whole structure.
By adopting the technical scheme, the connection strength between the frame and the liquid cooling plate is improved, and the sealing performance of the communication intersection of the liquid cooling main flow channel in the frame and the liquid cooling branch flow channel in the liquid cooling plate is improved.
In one embodiment, the rim is made of steel.
Through adopting above-mentioned technical scheme, the intensity of steel is stronger relatively to under same pressure-bearing requirement, can adopt thinner panel to make, with reduce wall thickness, provide bigger space for the module chamber. And the melting point of steel is higher relatively, can slow down to a certain extent even avoid the box to be burnt through when battery module takes place the thermal runaway, improves the security performance of battery package.
In one embodiment, the number of the beam bodies is multiple, the beam bodies are arranged in the accommodating cavity at intervals along a first direction, the first direction is parallel to the extension direction of the main flow of the liquid cooling, and the liquid cooling plate is arranged between every two adjacent beam bodies.
Through adopting above-mentioned technical scheme, can hold more battery modules in the battery package box, and each battery module all corresponds and is provided with the liquid cooling board.
In one embodiment, the number of the liquid cooling main flow channels is two, two ends of the liquid cooling branch flow channels are respectively communicated with the two liquid cooling main flow channels, and the two liquid cooling main flow channels are arranged in parallel.
By adopting the technical scheme, the two liquid cooling main runners are respectively positioned at two sides of the liquid cooling sub runners, namely the two liquid cooling main runners are respectively positioned at two opposite sides in the frame, so that the production and the manufacturing are convenient.
The battery pack comprises a battery module and the battery pack box body in any one of the embodiments, wherein the battery module is located in the accommodating cavity of the battery pack box body, and the battery module is respectively contacted with the extension part and the liquid cooling plate.
Through adopting above-mentioned technical scheme, reduce the impact force that receives to bulge 15 and liquid cooling board in the battery package to better protection liquid cold runner avoids also liquid cooling sprue and liquid cooling subchannel deformation or damage to a certain extent.
In one embodiment, the battery module comprises a module body and a support body connected to the outside of the module body, one end of the support body protrudes downwards from the bottom surface of the battery module body, and the support body is in contact with the extending portion.
Through adopting above-mentioned technical scheme, the supporter has supported the certain distance with the bottom surface of module body, also makes battery module place the module chamber after, only carries out the holistic support of battery module by the supporter, and the supporter supports at epitaxial portion, consequently makes the pressure of battery module concentrate at epitaxial portion to avoid making the liquid cooling board receive the pressure that comes from battery module.
In one embodiment, the plane of the bottom surface of the protruding portion is located above the plane of the bottom surface of the extending portion, and the partial structure of the extending portion is located between the protruding portion and the bottom protection plate.
Through adopting above-mentioned technical scheme, stretch into the partial structure of extension portion between bulge and the end backplate to make the area of contact between extension portion and the end backplate bigger, and make the structure of battery package box more compact.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic perspective view of a battery pack case provided in an embodiment of the present invention;
fig. 2 is a top view of a battery pack case provided by an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is a perspective view of a beam in a battery pack case provided by one embodiment of the present invention;
fig. 6 is a perspective view of a cold plate in a battery pack case provided by one embodiment of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 6 at C;
fig. 8 is a schematic view of the assembly of the liquid cooling plate, the bottom guard plate and the support member in the battery pack case according to an embodiment of the present invention;
fig. 9 is a perspective view of a bottom flap in a battery pack case according to an embodiment of the present invention;
fig. 10 is a top view of a battery pack provided by one embodiment of the present invention;
fig. 11 is a perspective view of a battery module in a battery pack according to an embodiment of the present invention;
fig. 12 is a schematic diagram illustrating relative positions of the battery module, the beam body, and the liquid cooling plate in the battery pack according to an embodiment of the present invention.
Reference numerals referred to in the above figures are detailed below:
1-a frame; 2-a beam body; 3-liquid cooling plate; 4-bottom guard board; 5-a support member; 6-a reinforcing beam; 7-clearance; 8-a battery module; 11-a first frame; 12-a second frame; 13-a third frame; 14-a fourth frame; 15-a projection; 16-liquid cooling the main flow channel; 17-a flow channel interface; 21-an extension; 31-liquid cooling by-pass; 41-an inner recess; 51-a fixed part; 52-a buffer; 81-module body; 82-support.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In order to explain the technical solution of the present invention, the following detailed description is made with reference to the specific drawings and examples.
Example one
As shown in fig. 1 to 5 and 7, one embodiment of the present invention provides a battery pack case including a lower case including: the battery module comprises a frame 1, a liquid cooling plate 3, a bottom protection plate 4 and a beam body 2, wherein the frame 1 is connected to the edge of the bottom protection plate 4, the frame 1 and the bottom protection plate 4 are surrounded to form an accommodating cavity, the beam body 2 is installed in the accommodating cavity, the accommodating cavity is divided into a plurality of module cavities by the beam body 2, the module cavities are used for accommodating the battery modules 8, the frame 1 is provided with a convex part 15 protruding towards the accommodating cavity, a liquid cooling main runner 16 is arranged in the convex part 15, the liquid cooling plate 3 is located in the accommodating cavity and connected with the convex part 15, a liquid cooling sub-runner 31 is arranged in the liquid cooling plate 3, and the liquid cooling sub-runner 31 is communicated with the liquid cooling main runner 16; the beam body 2 is provided with an outward extension portion 21, and the outward extension portion 21 is used to support the battery module 8.
Furthermore, the battery pack box body further comprises an upper box body, the upper box body is connected to the upper portion of the lower box body, and the containing cavity is formed between the lower box body and the upper box body.
When being applied to the battery package with the battery package box, then battery module 8 places in the module chamber, and battery module 8 is supported by the extension portion 21 of roof beam body 2, and battery module 8 and the contact of liquid cold plate 3, liquid cold plate 3 are used for the heat dissipation of battery module 8. The liquid cooling branch channels 31 in the liquid cooling plate 3 are communicated with the liquid cooling main channels 16 in the protruding parts 15 of the frame 1, and the liquid cooling main channels 16 are communicated with the liquid cooling branch channels 31 to form a cooling circulation loop. The liquid cooling main flow passage 16 is communicated with two flow passage interfaces 17, wherein one flow passage interface 17 is a liquid inlet interface, and the other flow passage interface is a liquid outlet interface. In the use process, the liquid inlet interface is connected with the liquid inlet pipeline, the liquid outlet interface is communicated with the liquid outlet pipeline, the liquid inlet pipeline is used for introducing cooling media into the liquid inlet interface, the cooling media flow in the liquid cooling main flow passage 16 and the liquid cooling branch flow passages 31, and finally the cooling media are discharged to the liquid outlet pipeline through the liquid outlet interface.
In the battery pack box provided by this embodiment, because the liquid cooling main runner 16 is arranged in the inner side region of the frame 1, that is, the outer side plate of the frame 1 protects the liquid cooling main runner 16, and the impact force on the outer side is prevented from directly impacting the liquid cooling main runner 16. And liquid cooling plate 3 sets up in the holding chamber, says that liquid cooling plate 3 is located end backplate 4 top that also, consequently when the battery package box bears the impact force that comes from the bottom, bears the impact force that comes from the bottom by end backplate 4, plays better guard action to liquid cooling plate 3 to play better guard action to liquid cooling subchannel 31. After applying the battery pack case to the battery pack, the battery module 8 is placed in the module cavity, and the battery module 8 is supported by the outer extension portion 21 of the beam body 2, thereby reducing the pressure of the battery module 8 against the liquid-cooled plate 3. To sum up, the impact force that reducible bulge 15 and liquid cooling plate 3 received, better protection liquid cold runner avoids also liquid cooling sprue 16 and liquid cooling subchannel 31 deformation or damage to a certain extent.
Further, as shown in fig. 2, the number of the liquid-cooling main flow passages 16 is two, two liquid-cooling main flow passages 16 are arranged in parallel, and two ends of the liquid-cooling branch flow passage 31 are respectively communicated with the two liquid-cooling main flow passages 16. In the two liquid cooling main flow passages 16, the protruding part 15 where one liquid cooling main flow passage 16 is located extends outwards towards the frame 1 to form an inlet liquid interface, and the protruding part 15 where the other liquid cooling main flow passage 16 is located extends outwards towards the frame 1 to form an outlet liquid interface. In fig. 1 and 2, the liquid inlet interface and the liquid outlet interface are located on the same side of the frame 1, and the arrangement is such that the liquid inlet pipeline and the liquid outlet pipeline are connected on the same side of the frame 1, which is convenient for arrangement.
In the battery pack case shown in fig. 2, the frame 1 includes a first frame 11, a second frame 12, a third frame 13, and a fourth frame 14, and the first frame 11, the second frame 12, the third frame 13, and the fourth frame 14 are connected end to end in sequence to form the rectangular frame 1. A protrusion 15 is provided on the side of the first housing 11 facing the third housing 13, a protrusion 15 is provided on the side of the third housing 13 facing the first housing 11, and a liquid-cooled main flow passage 16 is provided in each of the protrusion 15 of the first housing 11 and the protrusion 15 of the third housing 13.
The protruding portion 15 of the first frame 11 is arranged in parallel with the protruding portion 15 of the third frame 13. A plurality of liquid cooling plates 3 are arranged between the first frame 11 and the third frame 13, two ends of each liquid cooling plate 3 are respectively connected with the convex part 15 of the first frame 11 and the convex part 15 of the third frame 13, and the liquid cooling branch channels 31 in each liquid cooling plate 3 are perpendicular to and communicated with the liquid cooling main channel 16.
At least one beam body 2 is arranged in the battery pack box body, the accommodating cavity is at least divided into two module cavities by one beam body 2, as shown in fig. 2, a reinforcing beam 6 can be further arranged in the battery pack box body, and the extending direction of the reinforcing beam 6 is perpendicular to the extending direction of the beam body 2. The extending direction of the beam body 2 is parallel to the extending direction of the liquid cooling branch passages 31, and the extending direction of the reinforcing beam 6 is parallel to the extending direction of the liquid cooling main passage 16. Both ends of the beam 2 are connected to the first frame 11 and the third frame 13, respectively, and both ends of the reinforcing beam 6 are connected to the second frame 12 and the fourth frame 14, respectively.
When the battery package box need be used for holding more battery modules 8, the quantity of roof beam body 2 is a plurality of, and a plurality of roof beam bodies 2 set up along the first direction interval in the holding intracavity, and the both sides of roof beam body 2 along the first direction are provided with respectively between two adjacent roof beam bodies 2 and all are provided with liquid cooling board 3. So set up, separate more module chambeies with the holding chamber in the battery package box to be used for accommodating more battery module 8.
In the actual production and manufacturing process, the first frame 11 and the third frame 13 are both formed by extrusion, and then cut to a required length, so as to be connected with other frames 1. If the wheel base of the vehicle increases or decreases, the length of the battery pack box body in the extending direction of the first frame 1 needs to be increased or decreased, and then in the process of manufacturing the first frame 11 and the third frame 13, the matched length is cut out, so that the length of the whole battery pack box body can be increased or shortened without re-opening a grinding tool and re-designing.
The extending direction of the extending portion 21 is the same as the extending direction of the beam body 2, and the extending portion 21 may be provided only on one side of the beam body 2 so that the beam body 2 is L-shaped, or, as shown in fig. 5, the extending portions 21 may be provided on both opposite sides of the beam body 2 so that the beam body 2 is inverted T-shaped. So set up, the roof beam body 2 can all play the supporting role to the battery module 8 that is located the module intracavity of the both sides of the roof beam body 2.
In a preferred embodiment, the frame 1 is made of steel. The tensile strength of steel is stronger relatively to under same atress requirement, can adopt thinner panel to make frame 1, with the wall thickness that reduces frame 1, provide bigger space for the module chamber. In addition, because the melting point of steel is higher relatively, can slow down to a certain extent even avoid the box to be burnt through when battery module 8 takes place the thermal runaway, improve the security performance of battery package.
As shown in fig. 6 and 7, the liquid cooling plate 3 has a rectangular plate-like structure, and a plurality of liquid cooling branch passages 31 parallel to each other are provided in the liquid cooling plate 3. Specifically, the liquid cooling plate 3 may be formed by extruding a plurality of harmonica tubes. Be provided with a plurality of liquid cooling subchannel 31 in a liquid cold plate 3, compare in only setting up a liquid cooling subchannel 31 in a liquid cold plate 3, a plurality of liquid cooling subchannel 31 can make the velocity of flow of the liquid cooling medium in the liquid cooling subchannel 31 of different regions in this liquid cold plate 3 more approximate relatively, also make the liquid cooling effect of the different regions of liquid cold plate 3 approximate relatively.
As shown in fig. 3 and 8, in one embodiment, a gap 7 is formed between the liquid-cooled plate 3 and the bottom protection plate 4, the battery pack case further includes a support member 5, the support member 5 is located in the gap 7, and two ends of the support member 5 are respectively in contact with the bottom protection plate 4 and the liquid-cooled plate 3. Because there is clearance 7 between liquid cold plate 3 and the backplate 4, therefore liquid cold plate 3 and backplate 4 are not direct contact, when backplate 4 receives the impact and takes place the deformation, to liquid cold plate 3's influence less relatively. Since the support 5 is disposed between the liquid-cooled plate 3 and the bottom protection plate 4, a stronger supporting force is provided for the liquid-cooled plate 3.
The supporting member 5 may be in the form of a strip, a block, or other structures.
As shown in fig. 8, a plurality of supporting members 5 are provided to one liquid-cooled plate 3, and the supporting members 5 are spaced between the liquid-cooled plate 3 and the bottom cover plate 4.
One section of the supporting piece 5 is fixedly connected with the bottom protection plate 4, and the other end of the supporting piece is contacted with the liquid cooling plate 3. The support member 5 and the liquid-cooled plate 3 may be connected, for example, by bonding. The supporting member 5 and the liquid cooling plate 3 may not be connected, only contacting, for the supporting member 5 and the liquid cooling plate 3 are relatively fixed, an anti-slip coating may be provided on the side surface of the supporting member 5 contacting the liquid cooling plate 3, so as to increase the friction force between the supporting member 5 and the liquid cooling plate 3 and reduce the relative sliding.
In a preferred embodiment, the supporting member 5 includes a fixing portion 51 and a buffering portion 52, one end of the fixing portion 51 is connected to the bottom cover plate 4, the other end is connected to the buffering portion 52, and the buffering portion 52 is in contact with the liquid cooling plate 3. With this arrangement, when the bottom cover plate 4 is impacted, part of the impact force is transmitted to the liquid-cooled plate 3 via the support member 5, and part of the impact force is absorbed at the buffer portion 52, thereby reducing the impact force applied to the liquid-cooled plate 3.
The buffering portion 52 can be made of a structure with certain elasticity, for example, a rubber block, and the buffering portion 52 made of the rubber block not only can buffer the bottom protection plate 4 and the liquid cooling plate 3, but also can increase the friction force between the liquid cooling plate 3 and the supporting member 5, and reduce the relative sliding between the liquid cooling plate 3 and the supporting member 5.
As shown in fig. 9, the bottom guard plate 4 is a plate-shaped structure, and for enhancing the strength of the bottom guard plate 4, an inner concave portion 41 is arranged on the outer side (the side departing from the battery module 8) of the bottom guard plate 4, and the inner concave portion 41 is inwardly concave, so that the inner side (the side facing the battery module 8) of the bottom guard plate 4 is convex, and thus the whole structure of the bottom guard plate 4 is more three-dimensional, and the bending resistance is stronger.
Since a partial region of the bottom cover plate 4 is recessed inward to form a protrusion inside, the distance of the gap 7 between the bottom cover plate 4 and the liquid cooling plate 3 is made different. As shown in fig. 8, the length of the fixing portion 51 of the support 5 is changed so that the size of the support 5 is adapted to the gap 7.
Example two
As shown in fig. 10 to 12, a battery pack according to a second embodiment of the present invention includes a battery module 8 and the battery pack case provided in the first embodiment, wherein the battery module 8 is located in the accommodating cavity of the battery pack case, and the battery module 8 is respectively in contact with the extension portion 21 and the liquid cooling plate 3.
Through adopting above-mentioned technical scheme, reduce the impact force that receives to bulge 15 and liquid cooling board 3 in the battery package to the liquid cooling runner that comprises liquid cooling sprue 16 and liquid cooling runner 31 is protected better, also avoids liquid cooling sprue 16 and liquid cooling runner 31 deformation or damage to a certain extent.
To further reduce the pressure of the battery module 8 against the liquid-cooled plate 3, as shown in fig. 11, in one embodiment, the battery module 8 includes a module body 81 and a support 82 connected to the outside of the module body 81, one end of the support 82 protrudes downward from the bottom surface of the battery module 8 body, and the support 82 is in contact with the extended portion 21. The bottom surface of the module body 81 is in contact with the liquid cooling plate 3.
Through adopting above-mentioned technical scheme, the certain distance has been supported with the bottom surface of module body 81 to the supporter 82, also makes battery module 8 place the module chamber after, only carries out the holistic support of battery module 8 by supporter 82, and supporter 82 supports at epitaxial portion 21, consequently makes the pressure of battery module 8 concentrate on epitaxial portion 21 to avoid making liquid cooling plate 3 receive the pressure from battery module 8. In addition, because the horizontal plane of the bottom surface of the module body 81 is higher than the horizontal plane of the bottom surface of the supporting body 82, in the battery pack box, the distance between the liquid cooling plate 3 and the bottom protection plate 4 is greater than the distance between the extension portion 21 and the bottom protection plate 4, the distance between the extension portion 21 and the bottom protection plate 4 is relatively smaller, the extension portion 21 is conveniently connected with the bottom protection plate 4, and the distance between the liquid cooling plate 3 and the bottom protection plate 4 is greater, so that the impact force transmitted from the bottom protection plate 4 to the liquid cooling plate 3 is reduced.
In one embodiment, the support 82 is connected to the extension 21 by a fastener. As shown in fig. 11, a mounting hole is formed through the support 82, and the mounting hole may be a through hole or a threaded hole for allowing a fixing member to pass through to connect the support 82 and the outer extension 21. The fixing piece can be a pin, a bolt and other connecting structures. Battery module 8 and 2 fixed connection of roof beam body can alleviate to a certain extent and avoid the relative battery package box of battery module 8 to produce and rock to alleviate to a certain extent and avoid taking place the striking between battery module 8 and the battery package box even, all play the guard action to battery module 8 and battery package box.
Because the bottom surface of the module body 81 is supported by the support 82 for a certain distance, and the liquid cooling plate 3 contacts with the bottom surface of the module body 81, the distance between the liquid cooling plate 3 and the bottom protection plate 4 is relatively larger, and under the condition that the wall thickness of the protruding portion 15 and the sectional area of the liquid cooling main flow channel 16 are not changed, the liquid cooling plate 3 and the protruding portion 15 are connected conveniently, so that a certain distance is formed between the protruding portion 15 and the bottom protection plate 4.
Further, in one embodiment, the plane of the bottom surface of the protrusion 15 is located above the plane of the bottom surface of the extension 21, and a part of the structure of the extension 21 is located between the protrusion 15 and the bottom protective plate 4. That is, the distance between the protruding portion 15 and the bottom protective plate 4 is greater than the thickness of the extending portion 21, and the end of the extending portion 21 is inserted between the protruding portion 15 and the bottom protective plate 4, so that the contact area between the extending portion 21 and the bottom protective plate 4 is relatively larger, and the space between the protruding portion 15 and the bottom protective plate 4 is utilized, so that the structure of the whole battery pack box is more compact.
The utility model is not to be considered as limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (10)
1. A battery pack case, comprising: the battery module comprises a frame, a liquid cooling plate, a bottom protection plate and a beam body, wherein the frame is connected to the edge of the bottom protection plate, the frame and the bottom protection plate are surrounded to form an accommodating cavity, the beam body is installed in the accommodating cavity, the accommodating cavity is divided into a plurality of module cavities by the beam body, and the module cavities are used for accommodating battery modules; the beam body is provided with the portion of extending, the portion of extending is used for supporting the battery module.
2. The battery pack case of claim 1, wherein a gap is formed between the liquid-cooled plate and the bottom protective plate, the battery pack case further comprises a support member, the support member is located in the gap, and two ends of the support member are respectively in contact with the bottom protective plate and the liquid-cooled plate.
3. The battery pack case according to claim 2, wherein the supporting member includes a fixing portion and a buffering portion, one end of the fixing portion is connected to the bottom cover plate, the other end thereof is connected to the buffering portion, and the buffering portion is in contact with the liquid cooling plate.
4. The battery pack case of any one of claims 1-3, wherein the frame and the cold plate are welded together as a unitary structure.
5. The battery pack case according to any one of claims 1 to 3, wherein the frame is made of steel.
6. The battery pack box according to any one of claims 1 to 3, wherein the number of the beams is plural, the plural beams are spaced apart in a first direction in the accommodating chamber, the first direction is parallel to an extending direction of the liquid-cooled main flow passage, and the liquid-cooled plate is disposed between two adjacent beams.
7. The battery pack case according to any one of claims 1 to 3, wherein the number of the liquid-cooled main flow passages is two, both ends of the liquid-cooled branch flow passages are respectively communicated with the two liquid-cooled main flow passages, and the two liquid-cooled main flow passages are arranged in parallel.
8. A battery pack, comprising a battery module and the battery pack case according to any one of claims 1 to 7, wherein the battery module is located in the accommodating cavity of the battery pack case, and the battery module is in contact with the extension portion and the liquid cooling plate respectively.
9. The battery pack according to claim 8, wherein the battery module includes a module body and a support body coupled to an outer side of the module body, one end of the support body protrudes downward from a bottom surface of the battery module body, and the support body is in contact with the extended portion.
10. The battery pack of claim 9, wherein the plane of the bottom surface of the protrusion is above the plane of the bottom surface of the extension, and a portion of the extension is between the protrusion and the backplate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121251211.4U CN215816019U (en) | 2021-06-04 | 2021-06-04 | Battery pack box and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121251211.4U CN215816019U (en) | 2021-06-04 | 2021-06-04 | Battery pack box and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215816019U true CN215816019U (en) | 2022-02-11 |
Family
ID=80175336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121251211.4U Active CN215816019U (en) | 2021-06-04 | 2021-06-04 | Battery pack box and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215816019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976430A (en) * | 2022-06-14 | 2022-08-30 | 常州金品精密技术有限公司 | Lower box body of battery pack |
| WO2024045457A1 (en) * | 2022-08-31 | 2024-03-07 | 厦门海辰储能科技股份有限公司 | Energy storage device |
-
2021
- 2021-06-04 CN CN202121251211.4U patent/CN215816019U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976430A (en) * | 2022-06-14 | 2022-08-30 | 常州金品精密技术有限公司 | Lower box body of battery pack |
| CN114976430B (en) * | 2022-06-14 | 2024-06-25 | 常州金品精密技术有限公司 | Lower box of battery pack |
| WO2024045457A1 (en) * | 2022-08-31 | 2024-03-07 | 厦门海辰储能科技股份有限公司 | Energy storage device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215816019U (en) | Battery pack box and battery pack | |
| JP6094650B2 (en) | Assembled battery | |
| EP3584854B1 (en) | Fixing frame and battery pack | |
| JP7154480B2 (en) | battery cooler | |
| CN110867543A (en) | Battery pack | |
| CN218996983U (en) | Battery box and battery pack | |
| CN210897345U (en) | Battery pack lower shell and battery pack | |
| CN211238324U (en) | Battery box structure and power battery pack | |
| CN209912937U (en) | Lower casing and vehicle of battery package | |
| CN216250942U (en) | Battery pack box body integrated structure | |
| CN115377590A (en) | Battery pack and automobile | |
| CN114976413A (en) | Battery cell assembly and battery pack including the same | |
| CN217955999U (en) | Battery pack and battery device | |
| CN217655956U (en) | Shell assembly of battery pack, battery pack and power device | |
| CN218498191U (en) | Battery pack and electric device | |
| CN113571821B (en) | Battery pack | |
| CN207818703U (en) | Battery unit and battery modules | |
| CN217903339U (en) | Battery pack | |
| CN220604844U (en) | Bottom guard plate structure of battery pack and battery pack | |
| CN219393522U (en) | Liquid cooling plate and battery pack | |
| CN210778718U (en) | Battery support and battery module with same | |
| CN219779113U (en) | Battery box and energy storage system | |
| CN212303791U (en) | Power battery pack | |
| CN213042981U (en) | Battery box, battery package and electric automobile | |
| CN220627916U (en) | Battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |