CN114927824A - Battery pack connecting device - Google Patents
Battery pack connecting device Download PDFInfo
- Publication number
- CN114927824A CN114927824A CN202210762019.4A CN202210762019A CN114927824A CN 114927824 A CN114927824 A CN 114927824A CN 202210762019 A CN202210762019 A CN 202210762019A CN 114927824 A CN114927824 A CN 114927824A
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- Prior art keywords
- hole
- plate
- abutting
- cooling plate
- fixing
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- 238000001816 cooling Methods 0.000 claims abstract description 96
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000000110 cooling liquid Substances 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 2
- 238000004080 punching Methods 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery pack connecting device, comprising: the box body assembly comprises a box body frame, the water cooling plate assembly comprises a water cooling plate and at least one fixing piece, the water cooling plate assembly is arranged above the box body frame, the fixing piece is arranged on the box body frame, and is connected with the water cooling plate, the bottom protection plate component comprises a bottom protection plate, at least one abutting part and at least one clamping part, the bottom protection plate is arranged above the water cooling plate, a connecting gap for filling cooling liquid is formed between the water cooling plate and the bottom guard plate, at least one first through hole is arranged on the bottom guard plate, one end of the abutting piece is inserted into the first through hole, the connecting piece is connected with the bottom guard plate in a sealing mode, and the clamping piece is connected with the abutting piece and clamped with the fixing piece to be used for limiting the bottom guard plate and the water cooling plate to move relative to the box body frame. The invention can solve the problem that the pit needs to be formed by a stamping process.
Description
Technical Field
The invention relates to the technical field of battery packs, in particular to a battery pack connecting device.
Background
The battery pack is one of the key parts of the electric vehicle and is used for loading power cells, so the battery pack technology is very important for the electric vehicle. Meanwhile, the battery PACK has high requirements on various indexes such as sealing performance, flame retardant performance, strength, rigidity, shock resistance, vibration resistance, extrusion resistance, heat conductivity and puncture resistance, and meanwhile, in order to improve the energy density of the whole battery PACK, the battery PACK is expected to have the lightest weight, so that the structure and the design of the battery PACK are very complex.
At present most battery package designs have a plurality of tie points, and wherein box frame, water-cooling board and end backplate are the three layer construction in every tie point and connect through a bolt, for example the application number is: the Chinese patent of CN202120025170.0, named as: the sealed plate component and the battery module comprise a bottom guard plate, a bottom plate, a water cooling plate and a cross beam which are sequentially arranged from bottom to top; the sealing performance of the battery module can be improved, and the reliability is high. However, a plurality of pit structures are usually formed on the bottom guard plate in the connection structure, so that a certain water-cooling plate protection space is formed between the connected bottom guard plate and the water-cooling plate, and along with the design of newly developed different boxes, the requirements on the water-cooling plate protection space are different, so that the depth size of the pit on the bottom guard plate is changed accordingly, and therefore the bottom guard plate needs to be subjected to punch forming with a new pit depth by means of punching equipment.
Therefore, a need for battery package connecting device for solve among the prior art because of different box structures are different to the requirement in water-cooling plate protective space on the backplate of end, thereby lead to relying on stamping equipment to carry out the stamping forming of new pit degree of depth to the backplate of end again.
Disclosure of Invention
In view of this, it is necessary to provide a battery pack connecting device, which solves the technical problem in the prior art that the requirement for the protection space of the water cooling plate on the bottom protection plate is different due to different box structures, so that the bottom protection plate needs to be stamped by a new pit depth again by means of a stamping device.
In order to achieve the above technical object, an aspect of the present invention provides a battery pack connecting device, including:
a case assembly including a case frame;
the water cooling plate assembly comprises a water cooling plate and at least one fixing piece, the water cooling plate is arranged above the box body frame, and the fixing piece is arranged on the box body frame, is connected with the water cooling plate and is used for connecting the water cooling plate to the box body frame;
the bottom guard plate assembly comprises a bottom guard plate, at least one abutting piece and at least one clamping piece, wherein the bottom guard plate is arranged above the water cooling plate, a connecting gap used for filling cooling liquid is formed between the water cooling plate, at least one first through hole is formed in the bottom guard plate, one end of the abutting piece is inserted into the first through hole and protrudes out of the bottom guard plate, one end of the abutting piece extends to be connected with the water cooling plate through the connecting gap, the other end of the abutting piece is connected with the bottom guard plate in a sealing mode, the clamping piece is connected with the abutting piece and clamped with the fixing piece, and the bottom guard plate and the water cooling plate are limited to move relative to the box body frame.
Further, the bottom guard plate assembly further comprises at least one connecting piece, the connecting piece is arranged between the water cooling plate and the bottom guard plate and detachably connected with the abutting piece, and the connecting piece is in sealing connection with the water cooling plate and the bottom guard plate.
Furthermore, the connecting piece includes that connecting block and two at least sealed pads, the connecting block set up in between water-cooling board and the end backplate, and it is relative first recess has been seted up to first through-hole, the butt piece salient in the bottom of end backplate, and with the inner wall joint of first recess, two sealed pads set up respectively in the top and the bottom of connecting block, and with end backplate and water-cooling board looks butt.
Furthermore, an internal thread is formed on the circumferential inner wall of the first groove, the abutting part comprises an abutting rod, an external thread is formed on the circumferential outer wall of the abutting rod, and the abutting rod is in threaded connection with the connecting block.
Furthermore, the butt-joint rod is T-shaped and is provided with a large-diameter section and a small-diameter section, the large-diameter section of the butt-joint rod is far away from the inner wall of the bottom of the first groove relative to the small-diameter section, an external thread is arranged on the circumferential outer wall of the small-diameter section of the butt-joint rod and is in threaded connection with the connecting block, and the large-diameter section of the butt-joint rod is in butt connection with the top of the bottom protective plate.
Furthermore, the box frame is relative the first through-hole has been seted up the fixed orifices, the water-cooling board is relative the second through-hole has been seted up to the fixed orifices, the mounting includes dead lever and solid fixed ring, dead lever one end is inserted in proper order and is located second through-hole and fixed orifices is connected to in the fixed orifices, gu fixed ring fixed connection in the other end of dead lever, just gu fixed ring with the top looks butt of water-cooling board.
Furthermore, the fixing rod is provided with a threaded hole along the axis thereof, the inner wall of the bottom of the first groove is provided with a first through hole relative to the threaded hole, the clamping piece comprises a bolt, the bolt is connected to the abutting rod, and the thread section of the bolt penetrates through the first through hole and is in threaded connection with the threaded hole.
Further, the length of the fixing rod can be contracted along the axial direction of the fixing rod, so that a fixing part for connecting the fixing rod to the box body frame in a sealing mode is formed.
Furthermore, a second through hole is formed in the abutting rod relative to the fixing hole, and a thread section of the bolt sequentially penetrates through the second through hole and the first through hole and is in threaded connection with the threaded hole.
Furthermore, a second groove is formed in the top of the abutting rod, and the thread section of the bolt penetrates through the second through hole and the nut section to abut against the inner wall of the bottom of the second groove.
Compared with the prior art, the invention has the beneficial effects that: the box body frame, the water cooling plate and the bottom protection plate are sequentially arranged, the water cooling plate is connected with the box body frame through the fixing piece, a connecting gap for filling cooling liquid is formed between the water cooling plate and the bottom protection plate, one end of the abutting piece is inserted into the first through hole, the other end of the abutting piece is hermetically connected with the bottom protection plate, one end of the abutting piece protrudes out of the bottom protection plate and is connected with the water cooling plate, so that the connecting gap is formed between the bottom protection plate and the water cooling plate, meanwhile, the clamping piece connected with the abutting piece is clamped with the fixing piece and is used for limiting the relative movement of the bottom protection plate and the water cooling plate relative to the box body frame, and therefore the box body frame, the water cooling plate and the bottom protection plate are connected to form a whole body. Avoid the pit of punching press formation different degree of depth again on end backplate for end backplate has the universality, can solve among the prior art because of different box structures to the requirement difference of water-cooling plate protective space on the backplate of end, and the problem that leads to rely on stamping equipment to carry out the stamping forming of new pit degree of depth to end backplate again.
Drawings
Fig. 1 is a sectional view of a battery pack connecting device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a three-dimensional structure of a bolt, a connecting block and an abutting rod according to an embodiment of the present invention;
FIG. 3 is a schematic three-dimensional structure of a connecting block provided by an embodiment of the invention;
FIG. 4 is a schematic three-dimensional structure of an abutment rod provided by an embodiment of the present invention;
fig. 5 is a schematic three-dimensional structure diagram of a battery pack connection device according to an embodiment of the present invention;
FIG. 6 is a schematic view of the connection of the bottom guard plate, the water cooling plate and the box frame.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
Referring to fig. 1, the present invention provides a battery pack connecting device, including: the box body assembly 1, the water cooling plate assembly 2 and the bottom protection plate assembly 3, the box body assembly 1 comprises a box body frame 11, the water cooling plate assembly 2 comprises a water cooling plate 21 and at least one fixing member 22, the water cooling plate 21 is arranged above the box body frame 11, the fixing member 22 is arranged on the box body frame 11 and connected with the water cooling plate 21 and used for connecting the water cooling plate 21 to the box body frame 11, the bottom protection plate assembly 3 comprises a bottom protection plate 31, at least one abutting part 32 and at least one clamping member 33, the bottom protection plate 31 is arranged above the water cooling plate 21 and forms a connecting gap 23 for filling cooling liquid with the water cooling plate 21, the bottom protection plate 31 is provided with at least one first through hole 311, one end of the abutting part 32 is inserted into the first through hole 311 and protrudes out of the bottom protection plate 31, one end of the abutting part 32 extends to be connected to the water cooling plate 21 through the connecting gap 23, and the other end of the abutting part 32 is hermetically connected to the bottom protection plate 31, the clamping member 33 is connected to the abutting member 32 and clamped with the fixing member 22 for limiting the relative movement of the bottom guard plate 31 and the water cooling plate 21 with respect to the box frame 11.
In the device, a box frame 11, a water-cooling plate 21 and a bottom guard plate 31 are sequentially arranged, the water-cooling plate 21 is connected with the box frame 11 through a fixing member 22, a connecting gap 23 for filling cooling liquid is formed between the water-cooling plate 21 and the bottom guard plate 31, one end of an abutting member 32 is inserted into a first through hole 311, the other end of the abutting member is hermetically connected with the bottom guard plate 31, one end of the abutting member 32 protrudes out of the bottom guard plate 31 and is connected with the water-cooling plate 21, so that the connecting gap 23 is formed between the bottom guard plate 31 and the water-cooling plate 21, and a clamping member 33 connected with the abutting member 32 is clamped with the fixing member 22 to limit the relative movement of the bottom guard plate 31 and the water-cooling plate 21 relative to the box frame 11, thereby realizing the connection of the box frame 11, the water-cooling plate 21 and the bottom guard plate 31 into a whole, compared with the prior art, the connecting gap 23 between the water-cooling plate 21 and the bottom guard plate 31 is formed by the structure that the abutting member 32 protrudes out of the bottom guard plate 31, when the degree of depth of pit needs to be changed, the adjustment is adapted to the butt part 32 of different depth sizes of accessible, avoids punching press the pit that forms the different degree of depth again on end backplate 31 for end backplate 31 has the universality, can solve among the prior art because of different box structures to end backplate 31 on the requirement of water-cooling plate protective space different, the problem that leads to relying on stamping equipment to carry out the stamping forming of new pit degree of depth to end backplate 31 again.
It can be understood that, as shown in fig. 6, the depth of the pit on the bottom protection plate 31 is changed due to the increased complexity of the structure of the battery pack, and therefore, each time the depth of the pit is changed, stamping is required from a new mold, so that not only is the production period prolonged, but also the production cost is correspondingly increased.
Further, the device changes the connecting gap 23 used as the protection space of the water cooling plate by adapting and adjusting the abutting pieces 32 with different depth sizes, and can continue to use the bottom protection plate 31 before different designs of the box body frame 11, so that pits with different depths are prevented from being formed on the bottom protection plate 31 by punching again, and the bottom protection plate 31 has universality.
Further, as shown in fig. 5, the number of the fixing members 22 of the present device is plural, and the abutting members 32 and the engaging members 33 are disposed in one-to-one correspondence with the fixing members 22 and engaged with each other.
As shown in fig. 1 to 3, the bottom guard plate assembly 3 further comprises at least one connecting member 34, the connecting member 34 is disposed between the water-cooled plate 21 and the bottom guard plate 31 and detachably connected to the abutting member 32, and the connecting member 34 is hermetically connected to both the water-cooled plate 21 and the bottom guard plate 31.
It can be understood that the device realizes the sealing connection between the abutting piece 32 and the water cooling plate 21 and the bottom protection plate 31 through the arrangement of the connecting piece 34, and the arrangement of the connecting piece 34 simultaneously plays a role in supporting the connecting gap 23.
As shown in fig. 1, the connecting member 34 includes a connecting block 341 and at least two sealing gaskets 342, the connecting block 341 is disposed between the water-cooling plate 21 and the bottom guard plate 31, and is opened with a first groove 3411 corresponding to the first through hole 311, the abutting member 32 protrudes from the bottom of the bottom guard plate 31 and is clamped with an inner wall of the first groove 3411, and the two sealing gaskets 342 are respectively disposed at the top and the bottom of the connecting block 341 and abut against the bottom guard plate 31 and the water-cooling plate 21.
It can be understood that in the present device, the bottom protection plate 31 and the water cooling plate 21 are connected by the abutting member 32 being in clamping connection with the connecting block 341.
Further, all be provided with between connecting block 341 and end backplate 31 and the water-cooling plate 21 and be used for sealed pad 342, compare in prior art, can play more sealed effect, avoid the coolant liquid in the water-cooling plate guard space to leak.
Further, in the present apparatus, the sealing pad 342 is a sealing foam, the sealing foam has a double-sided adhesive, and both sides of the connecting block 341 are pre-adhered with the sealing foam, and the sealing foam is compressible, which will not be described herein.
As an embodiment, the first groove 3411 is provided with an internal thread on a circumferential inner wall thereof, the abutting member 32 includes an abutting rod 321, an external thread is provided on a circumferential outer wall of the abutting rod 321, and the abutting rod 321 is screwed to the connecting block 341.
As shown in fig. 4, the abutting rod 321 is T-shaped and has a large diameter section and a small diameter section, the large diameter section of the abutting rod 321 is disposed far away from the inner wall of the bottom of the first groove 3411 relative to the small diameter section, the outer circumferential wall of the small diameter section of the abutting rod 321 is provided with an external thread and is connected to the connecting block 341 by a thread, and the large diameter section of the abutting rod 321 abuts against the top of the bottom guard plate 31.
It can be understood that, when the abutting rod 321 is screwed and locked to the connecting block 341 in the present device, the large diameter section of the abutting rod 321 abuts against the top of the bottom protection plate 31, and the bottom protection plate 31 and the water cooling plate 21 are connected in a sealing manner by the matching clamping of the clamping member 33 and the fixing member 22.
As shown in fig. 1, the box frame 11 has a fixing hole 111 corresponding to the first through hole 311, the water-cooling plate 21 has a second through hole 211 corresponding to the fixing hole 111, the fixing member 22 includes a fixing rod 221 and a fixing ring 222, one end of the fixing rod 221 is inserted into the second through hole 211 and the fixing hole 111 in sequence and is connected to the fixing hole 111, the fixing ring 222 is fixedly connected to the other end of the fixing rod 221, and the fixing ring 222 abuts against the top of the water-cooling plate 21.
It can be understood that the water-cooling plate 21 is tightly connected to the tank frame 11 by the fixing ring 222.
Furthermore, the flange surface of the rivet nut is provided with sealant, and the water-cooling plate 21 and the box body frame 11 can be connected in a sealing manner after being riveted tightly, which is not described herein.
As an embodiment, as shown in fig. 1, the fixing rod 221 has a threaded hole 2211 along an axis thereof, the inner wall of the bottom of the first groove 3411 has a first through hole 3412 opposite to the threaded hole 2211, the fastening member 33 includes a bolt 331, the bolt 331 is connected to the abutting rod 321, and a thread section of the bolt 331 passes through the first through hole 3412 and is threadedly connected to the threaded hole 2211.
It can be understood that the bolt 331 is connected to the abutting rod 321, and is connected to the fixing rod 221 by means of a screw connection.
Further, in the present apparatus, the fixing rod 221 and the fixing rod 221 form a self-locking structure similar to a rivet nut, when the bolt 331 is screwed into the threaded hole 2211 around the axis thereof, the length of the fixing rod 221 may be contracted, and a fixing portion for hermetically connecting the fixing rod 221 to the case frame 11 is formed, so that the fixing rod 221 is connected to the case frame 11.
As shown in fig. 1, the abutting rod 321 has a second through hole 3211 opposite to the fixing hole 111, and the thread section of the bolt 331 sequentially passes through the second through hole 3211 and the first through hole 3412 and is threadedly connected to the threaded hole 2211.
It can be understood that the abutting rod 321, the connecting block 341 and the fixing rod 221 in the device are detachably connected through a bolt 331, so that the structure is simplified and the operation is convenient for a user.
As an embodiment, in order to shorten the length of the bolt 331, a second groove 3212 is formed at the top of the abutting rod 321, a thread section of the bolt 331 passes through the second through hole 3211, and a nut section abuts against the bottom inner wall of the second groove 3212, and the second groove 3212 is configured to prevent the bolt 331 from protruding from the top of the bottom guard plate 31.
The specific working flow of the invention is that the box body frame 11, the water cooling plate 21 and the bottom guard plate 31 are sequentially arranged, the water cooling plate 21 is connected with the box body frame 11 through the fixing piece 22, a connecting gap 23 for filling cooling liquid is formed between the water cooling plate 21 and the bottom guard plate 31, one end of the abutting piece 32 is inserted in the first through hole 311, the other end is hermetically connected with the bottom guard plate 31, one end of the abutting piece 32 protrudes out of the bottom guard plate 31 and is connected with the water cooling plate 21, so that the connecting gap 23 for filling cooling liquid is formed between the bottom guard plate 31 and the water cooling plate 21, meanwhile, the clamping piece 33 connected with the abutting piece 32 is clamped with the fixing piece 22 and is used for limiting the relative movement of the bottom guard plate 31 and the water cooling plate 21 relative to the box body frame 11, thereby realizing the connection of the box body frame 11, the water cooling plate 21 and the bottom guard plate 31 into a whole, compared with the prior art, the connecting gap 23 between the water cooling plate 21 and the bottom guard plate 31 is formed by the structure that the abutting piece 32 protrudes out of the bottom guard plate 31, when the degree of depth of pit needs to be changed, the adjustment is adapted to the butt part 32 of different depth sizes of accessible, avoids punching press the pit that forms the different degree of depth again on end backplate 31 for end backplate 31 has the universality, can solve among the prior art because of different box structures to end backplate 31 on the requirement of water-cooling plate protective space different, the problem that leads to relying on stamping equipment to carry out the stamping forming of new pit degree of depth to end backplate 31 again.
When the user uses the structure of the rivet nut formed by the fixing rod 221, the water cooling plate 21 is connected with the box body frame 11, the connecting plate is adhered to the water cooling plate 21, the bottom protection plate 31 is installed, the abutting rod 321 is inserted into the first groove 3411, finally, the thread section of the bolt 331 sequentially passes through the second through hole 3211 and the first through hole 3412 and is connected with the thread hole 2211 in a threaded manner, so that the nut of the bolt 331 abuts against the inner wall of the bottom of the second groove 3212, the fixing part abuts against the box body frame 11, the fixing ring 222 abuts against the water cooling plate 21, two opposite sides of the connecting block 341 abut against the water cooling plate 21 and the bottom protection plate 31 through the sealing pads 342, effective connection of the box body frame 11, the water cooling plate 21 and the bottom protection plate 31 is finally realized, and the sealing function required by the battery pack is realized at the same time.
Through the structure, the problem that in the prior art, a large number of pits are machined in the bottom protection plate 31 through a stamping process, so that the manufacturing process of the bottom protection plate 31 is complicated can be solved.
While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A battery pack connecting device, comprising:
a case assembly including a case frame;
the water cooling plate assembly comprises a water cooling plate and at least one fixing piece, the water cooling plate is arranged above the box body frame, and the fixing piece is arranged on the box body frame, is connected with the water cooling plate and is used for connecting the water cooling plate to the box body frame;
the bottom guard plate assembly comprises a bottom guard plate, at least one abutting piece and at least one clamping piece, wherein the bottom guard plate is arranged above the water cooling plate, a connecting gap used for filling cooling liquid is formed between the water cooling plate, at least one first through hole is formed in the bottom guard plate, one end of the abutting piece is inserted into the first through hole and protrudes out of the bottom guard plate, one end of the abutting piece extends to be connected with the water cooling plate through the connecting gap, the other end of the abutting piece is connected with the bottom guard plate in a sealing mode, the clamping piece is connected with the abutting piece and clamped with the fixing piece, and the bottom guard plate and the water cooling plate are limited to move relative to the box body frame.
2. The battery pack connecting device according to claim 1, wherein the bottom guard plate assembly further comprises at least one connecting member, the connecting member is disposed between the water-cooled plate and the bottom guard plate and detachably connected to the abutting member, and the connecting member is hermetically connected to both the water-cooled plate and the bottom guard plate.
3. The battery pack connecting device according to claim 2, wherein the connecting member includes a connecting block and at least two sealing pads, the connecting block is disposed between the water-cooling plate and the bottom protective plate, and has a first groove formed opposite to the first through hole, the abutting member protrudes from the bottom of the bottom protective plate and is clamped to an inner wall of the first groove, and the two sealing pads are disposed at the top and the bottom of the connecting block, and abut against the bottom protective plate and the water-cooling plate.
4. The battery pack connection device according to claim 3, wherein a circumferential inner wall of the first groove is internally threaded, the abutting member includes an abutting rod, a circumferential outer wall of the abutting rod is externally threaded, and the abutting rod is threadedly coupled to the connection block.
5. The battery pack connecting device according to claim 4, wherein the abutting rod is T-shaped and has a large diameter section and a small diameter section, the large diameter section of the abutting rod is disposed away from the inner wall of the bottom of the first groove relative to the small diameter section, the outer circumferential wall of the small diameter section of the abutting rod is externally threaded and is screwed to the connecting block, and the large diameter section of the abutting rod abuts against the top of the bottom guard plate.
6. The battery pack connecting device according to claim 4, wherein the case frame has a fixing hole corresponding to the first through hole, the water-cooling plate has a second through hole corresponding to the fixing hole, the fixing member includes a fixing rod and a fixing ring, one end of the fixing rod is inserted into the second through hole and the fixing hole in sequence and is connected to the fixing hole, the fixing ring is fixedly connected to the other end of the fixing rod, and the fixing ring abuts against the top of the water-cooling plate.
7. The battery pack connecting device according to claim 6, wherein the fixing rod has a threaded hole along an axis thereof, the inner wall of the bottom of the first groove has a first through hole opposite to the threaded hole, the engaging member includes a bolt, the bolt is connected to the abutting rod, and a thread section of the bolt passes through the first through hole and is threadedly connected to the threaded hole.
8. The battery pack connecting device according to claim 6, wherein the fixing rod has a length which is contractible in an axial direction thereof to form a fixing portion for sealingly connecting the fixing rod to the case frame.
9. The battery pack connecting device according to claim 7, wherein the abutting rod is provided with a second through hole opposite to the fixing hole, and the threaded section of the bolt sequentially passes through the second through hole and the first through hole and is in threaded connection with the threaded hole.
10. The battery pack connecting device according to claim 9, wherein a second groove is formed at a top of the abutting rod, and the threaded section of the bolt passes through the second through hole and the nut section abuts against an inner wall of a bottom of the second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210762019.4A CN114927824B (en) | 2022-06-30 | 2022-06-30 | Battery pack connecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210762019.4A CN114927824B (en) | 2022-06-30 | 2022-06-30 | Battery pack connecting device |
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| CN114927824A true CN114927824A (en) | 2022-08-19 |
| CN114927824B CN114927824B (en) | 2024-02-06 |
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| CN114927824B (en) | 2024-02-06 |
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