CN106684300B - Electric connection tray and cell module structure comprising same - Google Patents
Electric connection tray and cell module structure comprising same Download PDFInfo
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- CN106684300B CN106684300B CN201710056464.8A CN201710056464A CN106684300B CN 106684300 B CN106684300 B CN 106684300B CN 201710056464 A CN201710056464 A CN 201710056464A CN 106684300 B CN106684300 B CN 106684300B
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- 230000008707 rearrangement Effects 0.000 claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052802 copper Inorganic materials 0.000 claims description 26
- 239000010949 copper Substances 0.000 claims description 26
- 238000003825 pressing Methods 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000741 silica gel Substances 0.000 claims description 11
- 229910002027 silica gel Inorganic materials 0.000 claims description 11
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 238000003466 welding Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- 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
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses an electric connection tray and an electric core module structure comprising the same. The electric connection tray is attached to the top surface formed by a plurality of electric cores which are sequentially arranged, positive and negative pole clamping holes which are in one-to-one correspondence with the positive and negative poles of the electric cores are formed in the electric connection tray, and the positive and negative poles of the electric cores penetrate through and are limited in the positive and negative pole clamping holes. The electric core is provided with an exhaust port, a linear rearrangement gas groove and a linear double exhaust groove are formed in the surface, close to the electric core, of the electric connection tray, the double exhaust groove is laminated on the notch edge of the rearrangement gas groove, a step structure is formed between the rearrangement gas groove and the double exhaust groove, and the rearrangement gas groove and the double exhaust groove correspond to the exhaust port of the electric core. The use of the electric connection tray can rapidly exhaust the gas inside the battery cells when the abnormal reaction of the battery cells generates the gas, and can prevent short circuit between the battery cells and fix the battery cells.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to an electric connection tray and an electric core module structure comprising the same.
Background
With the progress of society and the continuous development of scientific technology, the performance requirements on all aspects of the battery cell module are also continuously improved. The traditional battery module based on square cell design has the defects and defects of large overall module size, high processing and manufacturing cost, low efficiency, low energy density, complex structure and the like, the battery module belongs to a subsystem in the whole assembly, and a low-voltage wire harness is required to be connected to each string of cells in series in the traditional assembly, so that the production efficiency is very low in the subsequent assembly, and the production and development of enterprises are not facilitated. Therefore, how to design a cell module structure with reasonable structure, which has the advantages of small size, high energy density, low processing and manufacturing cost, integration of a single acquisition module and the like, so that the whole assembly has high efficiency, which is a problem to be solved by the technicians in the field.
Further, when the battery cell is abnormal, gas is generated, and how to discharge the generated gas rapidly, so that the battery cell expansion explosion is avoided, which is also a problem to be solved by the research personnel of enterprises. Furthermore, because the integration degree of the battery cell module is high, when a plurality of battery cells are connected together, the battery cells can be fixed while short circuits between the battery cells are avoided, and the battery cell module is a technical problem which needs to be solved by research personnel of enterprises.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an electric connection tray and an electric core module structure comprising the electric connection tray, which can rapidly exhaust gas in an electric core when abnormal reaction of the electric core generates gas, and can prevent short circuit between the electric cores and fix the electric cores.
The aim of the invention is realized by the following technical scheme:
an electric connection tray is attached to the top surface formed by a plurality of electric cores which are sequentially arranged, positive and negative electrode clamping holes which are in one-to-one correspondence with the positive and negative electrodes of the electric cores are formed in the electric connection tray, and the positive and negative electrodes of the electric cores penetrate through and are limited in the positive and negative electrode clamping holes;
the electric core is provided with an exhaust port, a linear rearrangement gas groove and a linear double exhaust groove are formed in the surface, close to the electric core, of the electric connection tray, the double exhaust groove is laminated on the notch edge of the rearrangement gas groove, a step structure is formed between the rearrangement gas groove and the double exhaust groove, and the rearrangement gas groove and the double exhaust groove correspond to the exhaust port of the electric core.
In one embodiment, the exhaust port is in a kidney-shaped configuration.
In one embodiment, the positive and negative electrode clamping holes are rectangular through holes.
In one embodiment, the number of the positive and negative electrode clamping holes is plural, and the plural positive and negative electrode clamping holes are located at two sides of the rearrangement air groove and the double exhaust air groove.
In one embodiment, the positive and negative electrode clamping holes on one side of the rearrangement gas groove and the double exhaust gas groove are arranged in a straight shape.
The cell module structure comprises the electric connection tray and further comprises: the device comprises a containing box body, a plurality of connecting pieces, an FPC acquisition wire harness, an insulating upper cover and a signal acquisition board;
the plurality of battery cells are sequentially arranged and accommodated in the accommodating box body;
the positive and negative electrodes of the battery cells are connected in series/parallel through the connecting sheets, the FPC acquisition wire harness is provided with an integrated wire harness sheet and a plurality of signal acquisition sheets, the integrated wire harness sheet is attached to the surface, far away from the battery cells, of the electric connection tray, and the signal acquisition sheets are in one-to-one correspondence with the connecting sheets and are electrically connected;
the insulating upper cover is covered at an opening end of the accommodating box body;
the signal acquisition board is arranged on the accommodating box body, and the integrated wire harness sheet is provided with a wire harness plug-in unit in signal connection with the signal acquisition board.
The use of the electric connection tray can rapidly exhaust the gas inside the battery cells when the abnormal reaction of the battery cells generates the gas, and can prevent short circuit between the battery cells and fix the battery cells.
The battery cell module structure is characterized in that the battery cell module structure comprises a containing box body, a plurality of battery cells, an electric connection tray, a plurality of connecting sheets, an FPC collecting wire harness, an insulating upper cover, a signal collecting plate and heat conducting silica gel, and the structure of each component is optimally designed, so that the overall performance of the battery cell module is improved.
Drawings
FIG. 1 is a block diagram of a cell module structure according to one embodiment of the present invention;
fig. 2 is an exploded view of the cell module structure shown in fig. 1;
figure 3 is a further exploded view of the cell module structure shown in figure 2;
fig. 4 is a structural view of the electrical connection tray shown in fig. 3;
FIG. 5 is a block diagram of another view of the electrical connection tray shown in FIG. 4;
FIG. 6 is a block diagram of the left copper bar shown in FIG. 3;
fig. 7 is a structural view of the left insulating plate shown in fig. 3;
fig. 8 is a structural view of the insulation top cover shown in fig. 3;
FIG. 9 is an exploded view of the insulating top cover shown in FIG. 8;
fig. 10 is a structural view of the connecting piece shown in fig. 3.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, 2 and 3, a cell module structure 10 includes: the battery pack comprises a housing box 100, a plurality of battery cells 200, an electric connection tray 300, a plurality of connecting pieces 400, an FPC acquisition harness 500, an insulating upper cover 600, a signal acquisition board 700 and heat-conducting silica gel 800.
The plurality of battery cells 200 are sequentially arranged and accommodated in the accommodating box body 100, the electric connection tray 300 is attached to the top surface formed by sequentially arranging the plurality of battery cells 200, the electric connection tray 300 is provided with positive and negative electrode clamping holes 310 which are in one-to-one correspondence with the positive and negative electrodes 210 of the battery cells 200, and the positive and negative electrodes 210 of the battery cells 200 penetrate through and are limited in the positive and negative electrode clamping holes 310. The top surface is a surface where the positive and negative electrodes of the plurality of battery cells 200 are sequentially arranged, and the bottom surface is a surface opposite to the surface where the positive and negative electrodes are located.
The positive and negative electrodes 210 of the plurality of electric cores 200 are connected in series/parallel through the plurality of connecting sheets 400, the FPC acquisition harness 500 is provided with an integrated harness sheet 510 and a plurality of signal acquisition sheets 520, the integrated harness sheet 510 is attached to the surface of the electric connection tray 300, which is far away from the electric cores 200, and the plurality of signal acquisition sheets 520 are in one-to-one correspondence with the plurality of connecting sheets 400 and are electrically connected.
The insulating cover 600 is covered on an opening end of the housing case 100.
The signal acquisition board 700 is installed on the accommodating box 100, the integrated wire harness sheet 510 is provided with wire harness plug-ins 530 which are in signal connection with the signal acquisition board 700, and the pins of the wire harness plug-ins 530 are in one-to-one correspondence with the internal wire harnesses corresponding to the integrated wire harness sheet 510.
The heat conductive silica gel 800 is attached to the bottom surface formed by sequentially arranging the plurality of battery cells 200.
According to the cell module structure 10, a plurality of cells 200 which are sequentially arranged are contained in a box body 100, an electric connection tray 300 is attached to the top surfaces of the cells 200 which are sequentially arranged, the cells 200 are connected in series/parallel through a plurality of connecting sheets 400, an FPC acquisition wire harness 500 is connected to the connecting sheets 400, an insulating upper cover 600 is covered, a signal acquisition board 700 is connected with a wire harness plug-in 530 on the FPC acquisition wire harness 500 through the wire harness, and therefore assembly of a module is achieved. In particular, according to practical situations, the signal acquisition board 700 can be placed on any side of the end plates on both sides of the module, and the distance between the signal acquisition board 700 and the wire harness plug-in 530 is very short, so that the length of the wire harness can be shortened, and the acquisition wires can be led out from the edges of the battery box and some inconvenient places for taking out the acquisition wire harness. The signal acquisition board 700 achieves the functions of single voltage, temperature acquisition and equalization control. Regarding the use of the heat-conducting silica gel 800, the liquid cooling system should be placed first, then the module with the heat-conducting silica gel attached to the bottom is placed on the liquid cooling system, and then the module is fixed, and the heat-conducting silica gel is filled between the liquid cooling system and the battery core, so that the heat conduction effect is ensured by a single substance between the liquid cooling system and the battery core without influencing the heat conduction effect by gaps, and meanwhile, a certain compression amount can be still maintained under the condition that the liquid cooling system and the battery core have relative displacement under the vibration working condition, so that no gaps exist between the liquid cooling system and the battery core to ensure the heat dissipation effect and the heat dissipation uniformity, and meanwhile, the damage to the battery core or the liquid cooling system is avoided under the condition that the compression amount is too large. Similarly, when the heating plate is arranged under the heat-conducting silica gel, the insulating effect can be achieved, the heating effect of each electric core in the module can be not greatly different by utilizing the characteristic that the temperature of the heat-conducting silica gel is relatively consistent, local overheating is avoided, or the temperature of some electric cores is too low, so that the consistency of the electric cores is ensured, and the performance weakness of the electric cores is delayed.
As shown in fig. 3, the housing case 100 will be specifically described below:
the housing case 100 includes: the front side plate 110, the rear side plate 120, the left side plate 130 and the right side plate 140, the front side plate 110 and the rear side plate 120 are arranged oppositely, the left side plate 130 and the right side plate 140 are arranged oppositely, and the front side plate 110, the rear side plate 120, the left side plate 130 and the right side plate 140 are connected end to form a battery cell accommodating cavity 150 with two open ends. In the present embodiment, the left side plate 130 has the same structure as the right side plate 140, and the front side plate 110 has the same structure as the rear side plate 120.
The housing case 100 is mainly composed of a front side plate 110, a rear side plate 120, a left side plate 130, and a right side plate 140, wherein the front side plate 110 and the rear side plate 120 are placed on a module assembly table at a certain distance, then a plurality of battery cells 200 are placed between the front side plate 110 and the rear side plate 120, after the arrangement of the battery cells is completed according to the required number and serial-parallel number of the battery cells, left insulating plates 160 and the left side plate 130, and right insulating plates 170 and the right side plate 140 are mounted on the left and right sides of the module, and the relative positions thereof are temporarily fixed by a clamp. And then the module and the clamp are placed on a laser welding machine together to weld the front side plate, the rear side plate, the left side plate and the right side plate, and finally the module box body is completed. It should be noted that the design of the accommodating box 100 changes the previous fixed thinking mode of assembling the prior box, and the accommodating box 100 is completed step by step in the assembly process of the module. And then the module can be fixed on the battery pack box body by matching with four long bolts. The front side plate, the rear side plate, the left side plate and the right side plate are made of metal with small aluminum density or engineering plastic products can be adopted, and the quality is reduced as much as possible by digging holes and reducing the material thickness on the premise of ensuring the structural strength of the engineering plastic products, so that the energy density of the module is increased. The left side plate and the right side plate are hollow structures, so that the small battery management unit can be put down, the structure of bolt fixing is designed, the space is saved, and the energy density is increased.
Further, the accommodating case 100 further includes: left insulating plate 160, right insulating plate 170, left copper bar 180, right copper bar 190. The left insulating plate 160 is accommodated in the cell accommodating cavity 150 and is attached to the left side plate 130, the right insulating plate 170 is accommodated in the cell accommodating cavity 150 and is attached to the right side plate 140, the left insulating plate 160 is provided with a left connecting structure 161, the right insulating plate 170 is provided with a right connecting structure 171, the left connecting structure 161 is connected with one cell 200 through a left copper bar 180, and the right connecting structure 171 is connected with the other cell 200 through a right copper bar 190.
As shown in fig. 6 and 7, the left copper bar 180 and the right copper bar 190 have the same structure, and the left copper bar 180 and the right copper bar 190 are bent in a zigzag shape, and the left connection structure 161 and the right connection structure 171 have the same structure. The left copper bar 180 has a cell connection flat plate 181 and a cell pressing inclined plate 182, the cell connection flat plate 181 is attached to the end face of one of the cells 200 and electrically connected with the end face, the left connection structure 161 has a cell pressing inclined surface 162, and the cell pressing inclined plate 182 is fastened on the cell pressing inclined surface 162. The accommodating box 100 further includes a pressing bolt 183 and a module connecting bolt 184, and the pressing bolt 183 and the module connecting bolt 184 penetrate through the cell pressing inclined plate 182 and are screwed with the cell pressing inclined surface 162.
The left copper bar 180 is bent twice, and once is 90 degrees and once is more than 90 degrees, so that a cell connection flat plate 181 and a cell compression inclined plate 182 are obtained, the cell connection flat plate 181 is in surface contact with the cell 200, the cell compression inclined plate 182 is attached to the cell compression inclined surface 162, the cell compression inclined plate 182 and the cell compression inclined surface 162 are penetrated through a compression bolt 183 and a module connection bolt 184, the compression bolt 183 fixes the left copper bar 180 and the left connection structure 161, and the module connection bolt 184 is used for fixing when the module is connected with the module.
The cell compression inclined plate 182 and the cell compression inclined surface 162 can make the space required for fixing as small as possible while still ensuring that the flange surface of the bolt is fully pressed against the copper bar. In addition, when the copper bar and the battery cell are tightly pressed on the inclined plane 162 and fixed by the bolt, horizontal component force is generated, and the horizontal component force of the left copper bar 180 and the right copper bar 190 on two sides of the module enables the battery cell in the module to be more compact, so that the integrity of the whole module is ensured, and the structural stability of the module can be ensured in a vibrating environment.
As shown in fig. 6 and 7, the structure of the left copper bar 180 will be described in more detail: the electric core connection planar plate 181 is provided with an electric core welding hole 181a and a wire harness welding hole 181b, the electric core connection planar plate 181 is electrically connected with one of the electric cores 200 through the electric core welding hole 181a, and the electric core connection planar plate 181 is electrically connected with one of the signal acquisition pieces 520 through the wire harness welding hole 181 b. By providing the cell welding hole 181a and the wire harness welding hole 181b, welding with the cell and the signal acquisition sheet can be better realized.
Referring to fig. 4 and 5, the electrical connection flat plate 181 is provided with a limiting groove 181c and a limiting through hole 181d, the electrical connection tray 300 is provided with a groove limiting post 320 and a through hole limiting post 330 corresponding to the limiting groove 181c and the limiting through hole 181d, respectively, the groove limiting post 320 is accommodated in the limiting groove 181c, and the through hole limiting post 330 is accommodated in the limiting through hole 181 d. Through seting up spacing recess 181c and spacing through-hole 181d, electric connection tray 300 has spacing projection 320 of corresponding recess and spacing projection 330 of through-hole, can make electric core connection planar plate 181 more stable spacing in electric connection tray 300 and can not take place to loosen. Particularly, the design of the double limiting structure can better ensure that the electric core connecting plane plate 181 is better fixed on the electric connecting tray 300.
A limit notch 185 is formed between the cell connecting plane plate 181 and the cell pressing inclined plate 182, the electrical connection tray 300 is provided with a limit stop 340 corresponding to the limit notch 185, and the limit stop 340 is clamped on the limit notch 185. A limiting notch 185 is formed between the cell connecting plane plate 181 and the cell pressing inclined plate 182, and is mainly used for avoiding a bolt for bolt fixing, so that the space required for bolt fixing is as small as possible.
The front side plate 110 has a top clamping edge 111 and a bottom clamping edge 112, the electrical connection tray 300 has a clamping groove 350 corresponding to the top clamping edge 111, the top clamping edge 111 is clamped in the clamping groove 350, and the bottom clamping edge 112 wraps the bottoms of the plurality of electrical cores 200 which are sequentially arranged. Since the front side plate 110 and the rear side plate 120 have the same structure, the front side plate 110 and the rear side plate 120 cooperate to wrap the plurality of battery cells 200 through the wrapping structure, so that tight connection of the plurality of battery cells 200 is better realized.
The left side plate 130 has a left acquisition plate receiving groove 131, and the signal acquisition plate 700 is received in the left acquisition plate receiving groove 131. Similarly, the right side plate 140 has a right collecting plate receiving groove 141, and the signal collecting plate 700 may be selectively received in the right collecting plate receiving groove 141. Left side plate 131 is provided with left side module fixing bolt 132, and right side plate 140 is provided with right side module fixing bolt 142. By providing the left and right collection board receiving grooves 131 and 141, the signal collection board 700 can be better received therein, thereby improving overall consistency. By providing left side module securing bolts 132 and right side module securing bolts 142, an overall securing of the cell module structure 10 can be achieved.
As shown in fig. 4 and 5, the following describes the electrical connection tray 300 in detail:
the electric core 200 has an exhaust port 220, a linear rearrangement gas groove 360 and a linear double exhaust groove 370 are formed on the surface of the electric connection tray 300, which is close to the electric core 200, the double exhaust groove 370 is laminated on the notch edge of the rearrangement gas groove 360, a step structure 380 is formed between the rearrangement gas groove 360 and the double exhaust groove 370, and the rearrangement gas groove 360 and the double exhaust groove 370 correspond to the exhaust port 220 of the electric core 200. In this embodiment, the exhaust port 220 is a kidney-shaped hole, the positive and negative electrode clamping holes 310 are rectangular through holes, the number of the positive and negative electrode clamping holes 310 is plural, the positive and negative electrode clamping holes 310 are located at two sides of a rearrangement gas groove 360 and a double exhaust gas groove 370, and the positive and negative electrode clamping holes 310 located at one side of the rearrangement gas groove 360 and the double exhaust gas groove 370 are arranged in a straight line.
The gas guiding out is facilitated by the design that the gas rearrangement groove 360 and the linear double-exhaust groove 370 are double grooves with two layers of different contour sizes, the structure is located right above the gas exhaust port of the cell, and the purpose is to smoothly enable gas in the cell to be rapidly exhausted from the narrow cell, and gas in the cell can be rapidly exhausted when abnormal reaction of the cell generates gas, so that the cell is free from the danger of expansion explosion. The positive and negative pole clamping holes 310 surround the positive pole or the negative pole of the battery cell and play a role in isolating the positive pole and the negative pole of the same battery cell or the positive pole and the negative pole of the adjacent battery cell.
As shown in fig. 8 and 9, the insulating upper cover 600 will be specifically described as follows:
the insulation upper cover 600 includes: a middle module cover 610, a left module cover 620, and a right module cover 630.
The left module cover 620 and the right module cover 630 are respectively located at two sides of the middle module cover 610, the middle module cover 610 is provided with a middle buckle 611, the left module cover 620 is provided with a left buckle 621, the right module cover 630 is provided with a right buckle 631, and the edge of the electric connection tray 300 is provided with a positioning clamping strip 390 matched with the middle buckle 611, the left buckle 621 and the right buckle 631.
The left module cover 620 is provided with a left lateral positioning block 622, the right module cover 630 is provided with a right lateral positioning block 632, and the positioning clamping strip 390 is provided with a left lateral positioning groove 391 and a right lateral positioning groove 392 which are matched with the left lateral positioning block 622 and the right lateral positioning block 632 respectively.
The left module cover 620 has a left longitudinal positioning insert plate 623, the right module cover 630 has a right longitudinal positioning insert plate 633, the left longitudinal positioning insert plate 623 abuts against the middle module cover 610 near the plate surface of the electrical connection tray 300, and the right longitudinal positioning insert plate 633 abuts against the middle module cover 610 near the plate surface of the electrical connection tray 300.
To better achieve the snap fit, the locator card strip 390 has an inclined guide surface 393 through which the middle clip 611, the left clip 621, the right clip 631 slide onto the locator card strip 390.
The middle module cover 610 has a stiffener 612 near the plate surface of the electrical connection tray 300. Four holes are provided at the top of the middle module cover 610 to allow plastic rivets to be attached and a tie to be used for wire harness fixation in special cases.
The insulating upper cover 600 of the present design includes: the middle module cover 610, the left module cover 620 and the right module cover 630 can solve the problem of different module covers caused by different serial-parallel numbers of the same number of battery cells. When the number of strings is odd, only one model of the left side module cover 620 or the right side module cover 630 needs to be used; and when the number of strings is even, two types of left side module cover 620 or right side module cover 630 are required. When the number of the battery cells is different, the length of the module cover is changed, for example, the length of 12 strings of battery cells is larger than that of 10 strings of battery cells, and the length of the module cover is naturally larger than that of 10 strings of battery cells. The module covers with two more strings can be independently opened, so that the module designed by the open module can be completed by fewer open modules. The module cover is formed by injection molding of engineering plastics, and is fixedly connected with the electric connection tray through the buckles of the module cover of each part. The insulative upper cap 600 is formed in three parts, and the module covers at the left and right ends are designed to be inclined planes to minimize the distance between the module cover and the battery management unit for dust and water prevention.
It is further noted that the middle clip 611, the left clip 621, and the right clip 631 may be configured such that the middle module cover 610, the left module cover 620, and the right module cover 630 are fixed to the electrical connection tray 300. The left and right lateral positioning blocks 622 and 632 are provided to prevent the left and right module covers 620 and 630 from moving to the left and right sides, respectively. The arrangement of the left and right longitudinal positioning insert plates 623, 633 can prevent the left and right module covers 620, 630 from tilting upward, thereby improving the stability of the overall structure.
As shown in fig. 10, the connecting piece 400 will be specifically described as follows:
the connecting piece 400 has a first fixing groove 410 and a second fixing groove 420 formed on opposite sides thereof, the electrical connection tray 300 has a first fixing protrusion 394 and a second fixing protrusion 395 corresponding to the first fixing groove 410 and the second fixing groove 420, respectively, the first fixing protrusion 394 is accommodated in the first fixing groove 410, and the second fixing protrusion 395 is accommodated in the second fixing groove 420.
Two positive and negative electrode welding holes 430 are formed in the connecting sheet 400, and two adjacent battery cells 200 are electrically connected through the two positive and negative electrode welding holes 430 of the connecting sheet 400.
The connecting piece 400 has a first fixing groove 410 and a second fixing groove 420, and the electrical connection tray 300 is correspondingly provided with a first fixing protrusion 394 and a second fixing protrusion 395, so that the connecting piece 400 can be more stably fixed on the electrical connection tray 300, and the connecting piece 400 is prevented from loosening. Particularly, the first fixing groove 410 is fixed with the first fixing protrusion 394, the second fixing groove 420 is fixed with the second fixing protrusion 395, and the dual fixing manner further ensures the connection stability.
According to the cell module structure 10, the structure of each component is optimally designed by arranging the accommodating box body 100, the plurality of cells 200, the electric connection tray 300, the plurality of connection sheets 400, the FPC acquisition wire harness 500, the insulating upper cover 600, the signal acquisition plate 700 and the heat-conducting silica gel 800, so that the overall performance of the cell module is improved.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (1)
1. The cell module structure is characterized by comprising an electric connection tray, a containing box body, a plurality of connecting pieces, an FPC acquisition wire harness, an insulating upper cover, a signal acquisition plate and heat-conducting silica gel;
the plurality of battery cells are sequentially arranged and accommodated in the accommodating box body;
the positive and negative electrodes of the battery cells are connected in series/parallel through the connecting sheets, the FPC acquisition wire harness is provided with an integrated wire harness sheet and a plurality of signal acquisition sheets, the integrated wire harness sheet is attached to the surface, far away from the battery cells, of the electric connection tray, and the signal acquisition sheets are in one-to-one correspondence with the connecting sheets and are electrically connected;
the insulating upper cover is covered at an opening end of the accommodating box body;
the signal acquisition board is arranged on the accommodating box body, and the integrated wire harness sheet is provided with a wire harness plug-in unit in signal connection with the signal acquisition board; the heat-conducting silica gel is attached to the bottom surface formed by sequentially arranging the plurality of battery cells;
the accommodating box body comprises: the battery cell comprises a front side plate, a rear side plate, a left side plate and a right side plate, wherein the front side plate is arranged opposite to the rear side plate, the left side plate is arranged opposite to the right side plate, and the front side plate, the rear side plate, the left side plate and the right side plate are connected end to form a battery cell accommodating cavity with two open ends;
the accommodating box body further comprises: the left insulating plate, the right insulating plate, the left copper bar and the right copper bar; the left insulating plate is contained in the battery cell containing cavity and is attached to the left side plate, the right insulating plate is contained in the battery cell containing cavity and is attached to the right side plate, the left insulating plate is provided with a left connecting structure, the right insulating plate is provided with a right connecting structure, the left connecting structure is connected with a battery cell on one side through the left copper bar, and the right connecting structure is connected with a battery cell on the other side through the right copper bar;
the left copper bar and the right copper bar have the same structure, the left copper bar and the right copper bar are bent to be Z-shaped, and the left connecting structure and the right connecting structure have the same structure; the left copper bar is provided with a cell connecting plane plate and a cell compacting inclined plate, the cell connecting plane plate is attached to the end face of one of the cells and is electrically connected with the end face of the one of the cells, the left connecting structure is provided with a cell compacting inclined surface, and the cell compacting inclined plate is fastened on the cell compacting inclined surface;
the accommodating box body further comprises a pressing bolt and a module connecting bolt, wherein the pressing bolt and the module connecting bolt penetrate through the battery cell pressing inclined plate to be screwed with the battery cell pressing inclined surface;
the electric connection tray is attached to the top surface formed by a plurality of electric cores which are sequentially arranged, positive and negative electrode clamping holes which are in one-to-one correspondence with the positive and negative electrodes of the electric cores are formed in the electric connection tray, and the positive and negative electrodes of the electric cores penetrate through and are limited in the positive and negative electrode clamping holes;
the electric core is provided with an exhaust port, a linear rearrangement gas groove and a linear double exhaust groove are formed in the surface, close to the electric core, of the electric connection tray, the double exhaust groove is laminated on the notch edge of the rearrangement gas groove, a step structure is formed between the rearrangement gas groove and the double exhaust groove, and the rearrangement gas groove and the double exhaust groove correspond to the exhaust port of the electric core; the exhaust port is in a waist round shape; the positive and negative pole clamping holes are rectangular through holes; the number of the positive and negative electrode clamping holes is multiple, and the positive and negative electrode clamping holes are positioned at two sides of the rearrangement gas groove and the double exhaust groove; the positive and negative electrode clamping holes positioned at one side of the rearrangement gas groove and the double exhaust groove are arranged in a straight shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710056464.8A CN106684300B (en) | 2017-01-25 | 2017-01-25 | Electric connection tray and cell module structure comprising same |
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| CN201710056464.8A CN106684300B (en) | 2017-01-25 | 2017-01-25 | Electric connection tray and cell module structure comprising same |
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| CN106684300A CN106684300A (en) | 2017-05-17 |
| CN106684300B true CN106684300B (en) | 2023-11-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107093687A (en) * | 2017-05-26 | 2017-08-25 | 江苏银基烯碳能源科技有限公司 | A kind of battery module structure |
| CN108767519A (en) * | 2018-06-28 | 2018-11-06 | 东莞市奕东电子有限公司 | A kind of power battery adopts pressure FPC components |
| CN110943188B (en) * | 2018-09-25 | 2022-12-09 | 深圳市比亚迪锂电池有限公司 | Battery module, power battery and electric vehicle |
| CN111599955B (en) * | 2019-03-22 | 2024-04-30 | 骆驼集团新能源电池有限公司 | No module class aluminum hull battery module and aluminum hull battery |
| CN110994066A (en) * | 2019-11-26 | 2020-04-10 | 南京金龙客车制造有限公司 | New forms of energy battery system thermal management structure |
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| CN104752666A (en) * | 2013-12-31 | 2015-07-01 | 比亚迪股份有限公司 | Power battery module |
| CN204651372U (en) * | 2015-06-05 | 2015-09-16 | 宁德时代新能源科技有限公司 | For the cover assembly of battery modules |
| CN106169549A (en) * | 2016-09-27 | 2016-11-30 | 中航锂电（洛阳）有限公司 | A kind of battery module |
| CN206461016U (en) * | 2017-01-25 | 2017-09-01 | 惠州市蓝微新源技术有限公司 | A kind of electrical connection pallet and the battery core modular structure comprising the electrical connection pallet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8748021B2 (en) * | 2010-10-19 | 2014-06-10 | Samsung Sdi Co., Ltd. | Battery module |
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| CN104752666A (en) * | 2013-12-31 | 2015-07-01 | 比亚迪股份有限公司 | Power battery module |
| CN204651372U (en) * | 2015-06-05 | 2015-09-16 | 宁德时代新能源科技有限公司 | For the cover assembly of battery modules |
| CN106169549A (en) * | 2016-09-27 | 2016-11-30 | 中航锂电（洛阳）有限公司 | A kind of battery module |
| CN206461016U (en) * | 2017-01-25 | 2017-09-01 | 惠州市蓝微新源技术有限公司 | A kind of electrical connection pallet and the battery core modular structure comprising the electrical connection pallet |
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