CN111584791A - Battery module - Google Patents
Battery module Download PDFInfo
- Publication number
- CN111584791A CN111584791A CN202010575287.6A CN202010575287A CN111584791A CN 111584791 A CN111584791 A CN 111584791A CN 202010575287 A CN202010575287 A CN 202010575287A CN 111584791 A CN111584791 A CN 111584791A
- Authority
- CN
- China
- Prior art keywords
- battery
- explosion
- plate
- pressure relief
- module
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 80
- 238000009413 insulation Methods 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 claims abstract description 31
- 239000003292 glue Substances 0.000 claims abstract description 19
- 238000005192 partition Methods 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 26
- 230000017525 heat dissipation Effects 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 20
- 239000000565 sealant Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 36
- 238000010438 heat treatment Methods 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 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 group 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 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001422033 Thestylus Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- 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
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- 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
- H01M50/394—Gas-pervious parts or elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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)
- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses a battery module, which comprises: the battery cell module comprises a plurality of battery cells, the battery cells are suitable for being stacked and then connected in series or in parallel, and a first explosion-proof valve of each battery cell is positioned at least one end of each battery cell in the length direction; the separator module comprises a plurality of heat insulation plates, and one heat insulation plate is suitable for being bonded between two adjacent electric cores; the box module includes six closing plates, six closing plates are suitable for the six sides of bonding electric core module respectively, six closing plates after bonding are suitable for with a plurality of heat insulating board cooperations, in order to constitute a plurality of sealed sub-installation chambeies, just be formed with a plurality of second explosion-proof valves that correspond with first explosion-proof valve on the closing plate to first explosion-proof valve, sub-installation chamber is suitable for through sealed glue with the second explosion-proof valve that corresponds and seals, and between first explosion-proof valve and second explosion-proof valve, be equipped with the insulating layer on the closing plate. The battery module provided by the embodiment of the invention has the advantages of good sealing performance, high safety and capability of better relieving pressure to protect the battery core.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery module.
Background
At present, an electric vehicle is formed by grouping a plurality of small modules, each small module is 3 strings, 4 strings and 6 strings, the maximum string does not exceed 50 strings, but the electric vehicle usually needs more than 80 strings, the optimal string is usually 96 strings to 108 strings, and the maximum efficiency of a motor can be exerted. One set of electric motor car battery system needs require according to whole car series-parallel connection, a lot of little modules, and other spare parts, assemble the battery box, it is troublesome that the equipment of battery system spare part is many, battery box protection battery module is mechanical simultaneously, safety on the sealing, and increase explosion-proof pressure release part on the battery box, ensure that battery system can be directional when the pressure release, safety release, but there is a battery to release, high-temperature gas is when explosion-proof valve, can disturb other batteries, lead to other electric cores to catch fire and take place thermal runaway.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a battery module, which has good sealing performance, can better release pressure to protect a battery cell, and has high safety.
According to the battery module of the embodiment of the present invention, the battery module includes: the battery cell module comprises a plurality of battery cells, the battery cells are suitable for being stacked and then connected in series or in parallel, and a first explosion-proof valve of each battery cell is positioned at least one end of each battery cell in the length direction; the separator module comprises a plurality of heat insulation plates, and one heat insulation plate is suitable for being bonded between every two adjacent battery cores; the box module, the box module includes six closing plates, six the closing plate is suitable for the bonding respectively six sides of electric core module, six after the bonding the closing plate be suitable for with a plurality of the heat insulating board cooperation to constitute a plurality of sealed sub-installation chambeies, just right be formed with on the closing plate of first explosion-proof valve a plurality of with the second explosion-proof valve that first explosion-proof valve corresponds installs electric core the sub-installation chamber is suitable for through sealed glue with the second explosion-proof valve that corresponds and seals, just first explosion-proof valve with between the second explosion-proof valve, be equipped with the insulating layer on the closing plate.
According to the battery module, the plurality of battery cells are respectively arranged in the plurality of independent and closed sub-installation cavities, so that when the battery cells are out of control due to thermal runaway at a certain position, high-temperature and high-pressure gas in the battery cells can be discharged out of the battery module through the first explosion-proof valve and the second explosion-proof valve, interference to other good-quality battery cells is effectively prevented, safety risks such as explosion and combustion caused by thermal runaway of the plurality of battery cells are avoided, the box body structure has high structural strength, the sealing performance is good, the battery cells can be well protected through pressure relief, and the safety is high.
In addition, the battery module according to the embodiment of the present invention may further have the following additional technical features:
in some embodiments of the invention, the insulation panel comprises: the middle partition plate is provided with a plurality of through holes, the diameter of each through hole is limited to 1-20mm, and the sum S1 of the areas of the through holes and the area S of the middle partition plate satisfy the following conditions: s1 is less than or equal to 0.7S; the battery cell comprises a limiting part, wherein the limiting part is arranged at least one end of the left end and the right end of the middle partition board, the limiting part is suitable for extending along the direction perpendicular to the length direction of the middle partition board, the side face of the battery cell is suitable for being attached to the middle partition board, and the left end or the right end of the battery cell is suitable for being abutted to the limiting part.
Optionally, an avoidance groove is formed in the limiting portion, and in the up-down direction, the avoidance groove corresponds to the positive electrode or the negative electrode of the battery cell, and two adjacent connection rows connected in series or in parallel are adapted to be matched with the avoidance groove and hidden in the avoidance groove.
Furthermore, a positioning groove is formed in the middle of the avoiding groove, a positioning protrusion is formed on the connecting row, and the positioning groove is suitable for being matched with the positioning protrusion.
Optionally, a glue groove is formed in the limiting portion, when the sealing plate is bonded at the position opposite to the limiting portion, the glue groove is suitable for being filled with a sealing glue, and the filling height of the sealing glue is larger than the groove depth of the glue groove.
In some embodiments of the invention, a fire extinguishing pressure relief flue extending along the length direction is formed in the sealing plate facing the explosion-proof valve, a plurality of first pressure relief holes are formed in one side of the sealing plate facing the battery cell module, the plurality of first pressure relief holes correspond to the plurality of sub-installation cavities one by one, and high-temperature and high-pressure gas or flame released by the battery cell is suitable for entering the fire extinguishing pressure relief flue from the first pressure relief holes.
Further, one side that the closing plate kept away from electricity core module is equipped with second pressure release hole, second pressure release hole is equipped with a plurality ofly, and is a plurality of first pressure release hole and a plurality of second pressure release hole is in one-to-one just right in the length direction of electricity core, the at least one end of the length direction of the pressure release flue of putting out a fire has the pressure release opening, gets into the pressure release flue of putting out a fire high temperature high pressure gas or flame, process the pressure release flue of putting out a fire is suitable for the follow after handling the pressure release opening with second pressure release hole releases to the external world.
In some embodiments of the invention, the case module further comprises: the upper sealing ring covers the top of the heat insulation plate and at least one part of the opening at the top of the sub-installation cavity, is positioned at the lower end of the sealing plate at the top, and is suitable for being matched with the sealing plate at the top to seal the top of the sub-installation cavity; the lower sealing ring covers the bottom of the heat insulation plate and at least one part of the opening at the bottom of the sub-installation cavity, is positioned at the upper end of the sealing plate at the bottom, and is suitable for being matched with the sealing plate at the bottom to seal the bottom of the sub-installation cavity.
According to a particular embodiment of the invention, said sealing plate of the bottom comprises: the battery cell module comprises a cooling plate and an insulating layer, wherein cooling pipelines are uniformly distributed on the cooling plate, the insulating layer comprises an insulating film, and the insulating film is arranged on the side surface of the cooling plate facing the battery cell module; the sealing plate of the top portion includes: the battery cell module comprises a heat dissipation plate and an insulating layer, wherein a heat dissipation grid is formed on one side, away from the battery cell module, of the heat dissipation plate, and the insulating layer is arranged on one side, facing the battery cell module, of the heat dissipation plate.
In some embodiments of the invention, the detection module comprises a plurality of acquisition sheets, each acquisition sheet is formed with a plurality of detection contacts, and each detection contact is suitable for being connected with at least one of the positive pole and the negative pole of each battery cell.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of the overall structure of a battery module according to an embodiment of the present invention;
fig. 2 is an exploded view of a battery module according to an embodiment of the present invention;
FIG. 3 is an enlarged view of area A of FIG. 2;
fig. 4 is a schematic position diagram of a negative end of a cell of a battery module according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a position of a positive terminal of a battery cell of a battery module according to an embodiment of the invention and a first explosion-proof valve;
fig. 6 is a schematic structural view of a heat insulating plate of a battery module according to an embodiment of the present invention;
FIG. 7 is an enlarged view of area B of FIG. 6;
fig. 8 is a schematic diagram of an assembly of a cell and a thermal insulation board according to an embodiment of the invention;
fig. 9 is an assembly view of a cell module of the battery module according to the embodiment of the invention;
FIG. 10 is an enlarged view of area C of FIG. 9;
fig. 11 is a schematic structural view of a fire extinguishing pressure relief flue of a battery module according to an embodiment of the present invention;
fig. 12 is a schematic structural view of a heat dissipation plate of a battery module according to an embodiment of the present invention.
Reference numerals:
100: a battery module;
1: a cell module; 11: an electric core; 111: a first explosion-proof valve; 12: a connecting row; 121: positioning the projection;
2: a heat insulation plate; 21: a middle partition plate; 22: a limiting part; 221: avoiding the groove; 222: positioning a groove; 223: a glue groove;
3: a sealing plate; 31: fire extinguishing pressure relief flue; a first pressure relief vent; 311 a second pressure relief vent; 312: a pressure relief opening; 32: a cooling plate; 33: a heat dissipation plate; 331: a heat dissipation grid;
4: a detection module; 41: collecting the slices; 411: the stylus is detected.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A battery module 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 12.
According to the battery module 100 of the embodiment of the present invention, the battery module 100 includes: battery core module 1, baffle module and box module.
Specifically, the battery cell module 1 includes a plurality of battery cells 11, the plurality of battery cells 11 are suitable for being stacked and then connected in series or in parallel, the first explosion-proof valves 111 of the plurality of battery cells 11 are located at least one end of the battery cells 11 in the length direction, in an example as shown in fig. 4 and 5, the positive electrodes and the negative electrodes of the battery cells 11 are respectively located at two sides of the battery cells 11 in the length direction, the plurality of battery cells 11 are connected in series according to the layout shown in fig. 6, the upper limit of the electric energy that can be stored by the battery module 100 is raised, and when the battery module is mounted on an electric device such as an electric vehicle, the cruising ability of the electric device can be. Meanwhile, the overall shape of the battery module 100 formed in the above manner is more regular, so that the battery module is conveniently adapted to be installed on electric equipment and is convenient to operate. It should be noted that the shape, layout and connection manner of the battery cell 11 may be set according to actual production requirements, and this is only for illustration and is not a limitation to the present invention.
As shown in fig. 5, the first explosion-proof valve 111 is disposed on the positive side of the battery cell 11, so that when thermal runaway occurs in the battery cell 11, high-temperature and high-pressure gas or flame instantaneously generated inside the battery cell 11 can be discharged directionally through the first explosion-proof valve 111, and thus, a safety risk caused by explosion or combustion of the battery cell 11 due to too high internal pressure or too high temperature of the battery cell 11 is avoided. It should be noted that the first explosion-proof valve 111 may also be disposed at the negative end of the battery cell 11, or disposed at both the positive end and the negative end of the battery cell 11, which is not limited herein.
Specifically, the separator module includes a plurality of heat insulating boards 2, and one heat insulating board 2 is suitable for bonding between two adjacent electric cores 11, that is, the heat insulating board 2 can better obstruct the heat transfer between the electric cores 11, so as to prevent that when one of the electric cores 11 is out of control due to heat, the electric core 11 damages its adjacent good product electric core 11 through the lateral wall heat transfer, and the safety of the battery module 100 is improved.
In some examples, the heat insulation board 2 and the battery cell 11 are bonded through structural adhesive, so that the connection stability between the heat insulation board and the battery cell is ensured, and the bonding strength of the structural adhesive is greater than 0.2 MPa.
Preferably, the height of the thermal insulation board 2 is not lower than that of the battery cells 11, so that the sides of the battery cells 11 connected with the thermal insulation board 2 are all located on the thermal insulation board 2, and the thermal insulation board 2 can better block heat conduction between adjacent battery cells 11.
It should be noted that, in the production application, the heat insulation board 2 is made of a material with a low thermal conductivity coefficient, and is made of an insulating material, the electric heating coefficient is usually less than 0.05W/m.k, so as to be convenient for blocking heat conduction and electric insulation between the battery cores 11, the pressure resistance of the heat insulation board 2 is less than or equal to 0.2MPa, and the deformation amplitude is less than or equal to 10 percent
Further, as shown in fig. 1 and 2, the box module includes six sealing plates 3, the six sealing plates 3 are respectively suitable for bonding six side surfaces of the cell module 1, the bonded six sealing plates 3 are suitable for being matched with the plurality of heat insulation plates 2 to form a plurality of sealed sub-mounting cavities (not shown), a plurality of second explosion-proof valves (not shown) corresponding to the first explosion-proof valve 111 are formed on the sealing plate 3 facing the first explosion-proof valve 111, the sub-mounting cavities provided with the cells 11 and the corresponding second explosion-proof valves are suitable for being sealed by sealant, and an insulating layer is arranged on the sealing plate 3 between the first explosion-proof valve 111 and the second explosion-proof valves. The insulating layer is used for the electrical insulation between closing plate 3 and the electric core 11, avoids battery module 100 to take place the safety risk that the condition such as electric leakage or short circuit between the electric core 11 caused.
That is to say, six block of closing plates 3 after bonding form the box structure, seal electric core module 1 in the sealed space that it formed, in some examples, all contain the metal material in the closing plate 3 material, can adopt multiple forging technique to make, preferably, adopt welding interconnect between the closing plate 3, of course, also can adopt structural connection such as riveting, bolt, have promoted battery module 100's structural strength, play the guard action to electric core module 1.
Specifically, a plurality of battery cells 11 are respectively installed in a plurality of independent, closed sub-installation cavities, thereby forming the thermal insulation protection of a single battery cell 11, when the battery cell 11 is out of thermal runaway, the battery cell 11 discharges the high-temperature and high-pressure gas inside the battery cell 11 through the first explosion-proof valve 111 in a directional manner, the high-temperature and high-pressure gas enters the sealant, a sealing space is formed between the battery cell 11 and the second explosion-proof valve, preferably, the sealant is a flame-retardant sealant, when the battery cell 11 is prevented from being out of thermal runaway, the high-temperature and high-pressure gas enters other battery cells 11, and then the gas is released to the outside of the battery cell module 1 through the second explosion-proof valve corresponding to the first explosion-proof valve 111, thereby avoiding the safety risks such as explosion and combustion caused by the.
Preferably, the second explosion-proof valve is of a one-way opening structure, gas can only be discharged from the inside to the outside, and external air cannot enter through the second explosion-proof valve, so that when the thermal runaway of the battery cell 11 is ensured, and when the pressure of the second explosion-proof valve is relieved, high-temperature and high-pressure gas cannot flow backwards to the area of the good product battery cell 11 through the rest of the second explosion-proof valves. In some examples of the present invention, an insulating pressure relief film is disposed on an outer side of the second explosion-proof valve, the pressure relief film is made of a high temperature and refractory material, can withstand a high temperature of 1000 ℃ and cannot be burned through within five minutes, and when the second explosion-proof valve receives a pressure greater than 25kpa from an inner side, the pressure relief film can be instantly opened to discharge gas.
According to the battery module 100 of the embodiment of the invention, the plurality of battery cells 11 are respectively installed in the plurality of independent and closed sub-installation cavities, so that when thermal runaway occurs in a certain battery cell 11, high-temperature and high-pressure gas in the battery cell 11 can be better discharged out of the battery cell module 1 through the first explosion-proof valve 111 and the second explosion-proof valve, interference to other good-quality battery cells 11 is effectively prevented, safety risks such as explosion, combustion and the like caused by thermal runaway of the plurality of battery cells 11 are avoided, and the box structure has higher structural strength. Therefore, the battery module provided by the embodiment of the invention has the advantages of good sealing performance, capability of better protecting the battery core and high safety.
In some embodiments of the present invention, the insulation panel 2 comprises: a middle partition 21 and a stopper 22.
Specifically, the middle partition plate 21 is provided with a plurality of through holes (not shown), the diameter of each through hole is limited to 1-20mm, and the sum of the areas of the plurality of through holes S1 and the area S of the middle partition plate 21 satisfies that: s1 is not more than 0.7S, that is to say, the middle partition board 21 is bonded on one side where the two battery cells 11 are adjacent, when the battery cells 11 are out of thermal runaway, high-temperature and high-pressure gas inside the battery cells 11 can be discharged out of the battery module 100 through the first explosion-proof valve 111 and the second explosion-proof valve, but the temperature of the battery cells 11 can be influenced by the temperature and the temperature of the battery cells 11 can rise to some extent, and the battery cells 11 can generate heat in the use process of the battery module 100.
In other words, the heat generated by the battery cell 11 can be transmitted to the adjacent battery cell 11 through the middle partition plate 21, when the temperature received by the adjacent non-defective battery cell 11 is too high, the damage to the adjacent non-defective battery cell can be caused, the contact area between the middle partition plate 21 and the battery cell 11 is reduced by arranging the through hole on the middle partition plate 21, the efficiency of heat transmission between the two is reduced, the temperature of the single battery cell 11 is difficult to influence other battery cells 11 through the middle partition plate 21, and the use safety of the battery cell 11 is improved.
Meanwhile, the sum of the areas of the through holes is not more than 70% of the area of the middle partition plate 21, so that the sufficient bonding area between the middle partition plate 21 and the battery cell 11 is ensured and the stability of the whole structure is ensured under the condition that the heat transfer efficiency between the battery cell 11 and the middle partition plate 21 is reduced as much as possible.
Further, as shown in fig. 6, at least one end of both ends about the median septum 21 is located to spacing portion 22, spacing portion 22 is suitable for extending along the length direction of perpendicular to median septum 21, the side of electric core 11 is suitable for laminating with median septum 21, the left end or the right end of electric core 11 are suitable for with spacing portion 22 butt, in some examples, both ends all are equipped with spacing portion 22 about median septum 21, therefore, spacing portion 22 can fix the position of electric core 11 better, be convenient for electric core 11 and median septum 21's bonding, reduced the assembly degree of difficulty.
Optionally, as shown in fig. 8, an avoiding groove 221 is formed on the limiting part 22, in the up-down direction, the avoiding groove 221 corresponds to the positive electrode or the negative electrode of the battery cell 11, and the connection row 12 of two battery cells 11 adjacent in series or in parallel is adapted to cooperate with the avoiding groove 221 and be hidden in the avoiding groove 221. Preferably, in some examples, the length of the connection bar 12 is the same as the length of the avoidance groove 221, and the thickness does not exceed the depth of the avoidance groove 221, so that the connection bar 12 can be better fixed in the avoidance groove 221, at this time, the connection bar 12 can completely shield the poles of the battery cells 11 on the left and right sides, and the setting of the connection bar 12 cannot shield the first explosion-proof valve 111, so as to ensure the normal operation of the first explosion-proof valve 111.
As shown in fig. 3, 8, and 9, when the plurality of battery cells 11 are connected in series according to the illustrated manner, the polarities of the same sides of the adjacent battery cells 11 are different, the connection bar 12 connects the positive electrode and the negative electrode of the adjacent battery cells 11, specifically, the connection bar 12 is made of a material with good conductivity, the connection bar 12 can communicate the circuits of the adjacent battery cells 11, and only one side of the plurality of groups of adjacent battery cells 11 is connected, so that the communication of the series circuits is ensured, which is not described herein again.
Preferably, the connection between the connecting row 12 and the electrode column is performed by welding, and may also be performed by laser, argon arc welding, ultrasonic welding, or the like, or may be performed by bolt or rivet connection.
It should be noted that the above is only a description of one embodiment of the present invention, so as to facilitate understanding of the coordination relationship among the modules in the present invention, and the present invention is not limited thereto.
Further, dodge the middle part of recess 221 and be formed with constant head tank 222, be formed with the location arch on the run-on 12, constant head tank 222 is suitable for with the protruding cooperation of location, that is to say, run-on 12 assembles the back, through the protruding cooperation with constant head tank 222 of location, can make run-on 12 keep dodging in the recess 221 betterly, has guaranteed the stability of connecting, simple structure, the assembly of being convenient for.
Optionally, a glue groove 223 is formed in the limiting portion 22, when the sealing plate 3 is bonded to the position just opposite to the limiting portion 22, a sealant is filled in the glue groove 223, and the filling height of the sealant is greater than the groove depth of the glue groove 223, that is, the battery cell 11 is bonded to the middle of the middle partition plates 21 on the two sides, after the assembly of the battery module 100 is completed, each battery cell 11 is located in an independent sub-installation cavity through the connection between the sealing plate 3 and the middle partition plates 21, and a sealing structure is formed between each battery cell 11 pole and the adjacent battery cell 11 pole. Therefore, when the battery cell 11 is out of control thermally, the generated high-temperature and high-pressure gas does not affect the adjacent battery cell 11 pole, and the use safety of the battery module 100 is improved.
Preferably, the sealant is a flame retardant sealant, and the back sides of the positioning protrusions of the coupling bars 12 are also bonded to the sealing plate 3 using the sealant when the battery module 100 is assembled.
In some embodiments of the present invention, a fire extinguishing pressure relief flue 31 extending in the length direction is formed in the sealing plate 3 opposite to the first explosion-proof valve 111, a plurality of first pressure relief holes (not shown) are formed in a side of the sealing plate 3 facing the cell module 1, the plurality of first pressure relief holes correspond to the plurality of sub-mounting cavities one by one, and high-temperature and high-pressure gas or flame released by the cell 11 is suitable for entering the fire extinguishing pressure relief flue 31 from the first pressure relief holes.
That is to say, after the assembly of battery module 100 is accomplished, first explosion-proof valve 111 is in the confined space that median septum 21 and closing plate 3 formed, therefore, when electric core 11 thermal runaway, the high temperature high pressure gas or the flame of first explosion-proof valve 111 exhaust can only be discharged through first pressure release hole, and enter the pressure release flue 31 of putting out a fire, it can be understood that, the pressure release flue 31 of putting out a fire can extinguish flame, and then pass through the flue with high temperature high pressure gas and discharge, avoid the burning that high temperature high pressure gas or flame caused, safety risks such as explosion, moreover, the steam generator is simple in structure, safety is effective.
In some examples, a second explosion-proof valve is installed in the first pressure relief hole to prevent high-temperature and high-pressure gas or flame from flowing backward to damage other cells 11.
Further, referring to fig. 11, one side of the sealing plate 3 away from the cell module 1 is provided with a second pressure relief hole 311, the second pressure relief hole 311 is provided with a plurality of first pressure relief holes and a plurality of second pressure relief holes 311, which are in one-to-one correspondence in the length direction of the cell 11, at least one end in the length direction of the fire extinguishing pressure relief flue 31 is provided with a pressure relief opening 312, high-temperature high-pressure gas or flame entering the fire extinguishing pressure relief flue 31 is suitable for being released to the outside from the pressure relief opening 312 and the second pressure relief hole 311 after the fire extinguishing pressure relief flue 31 is subjected to fire extinguishing treatment.
That is to say, when electric core 11 takes place thermal runaway, can be in the inside instantaneous production a large amount of high temperature high-pressure gas of electric core 11, serious person can be accompanied by flame, when a large amount of gas discharges to the pressure release flue 31 of putting out a fire through first explosion-proof valve 111, only pressure release opening 312 is used for exhaust gas efficiency not high, lead to high temperature high-pressure gas to realize staying overlength time in pressure release flue 31 of putting out a fire, and then increase the outside pressure that bears of first explosion-proof valve 111, influence gaseous emission in trouble electric core 11. Therefore, the pressure of the gas discharged from the pressure relief opening 312 is relieved by the second pressure relief holes 311, so that the high-temperature and high-pressure gas can be discharged out of the fire extinguishing pressure relief flue 31 in as short a time as possible, the gas discharge efficiency is improved, the smoothness of the flue 31 is guaranteed, the first explosion-proof valve 111 can normally work, and the safety of the battery module 100 is further improved.
In some alternative examples, the first explosion-proof valve 111 is concentric with the first and second pressure relief holes 311, and the first explosion-proof valve 111 is directly smaller than the diameter of the pressure relief holes, improving the efficiency of gas venting.
In some embodiments of the invention, the case module further comprises: the upper sealing ring covers the top of the heat insulation plate 2 and at least one part of the opening at the top of the sub-installation cavity, is positioned at the lower end of the sealing plate 3 at the top, and is suitable for being matched with the sealing plate 3 at the top to seal the top of the sub-installation cavity; the lower sealing ring covers the bottom of the heat insulation plate 2 and at least one part of the opening at the bottom of the sub-installation cavity, is positioned at the upper end of the sealing plate 3 at the bottom, and is suitable for being matched with the sealing plate 3 at the bottom to seal the bottom of the sub-installation cavity.
That is to say, through installing upper seal ring and lower seal ring, make after the assembly of battery module 100 is accomplished, every sub-installation cavity is seal structure, through installing a plurality of electric cores 11 respectively in solitary sub-installation cavity, conveniently cooperate first pressure release hole, when electric core 11 thermal runaway, with the directional discharge of the high temperature high pressure gas of first explosion-proof valve 111 exhaust, and then put out a fire through the pressure release passageway of putting out a fire, processing such as release, cause the influence to adjacent yields electricity core 11 when avoiding trouble electric core 11 thermal runaway. Meanwhile, external water and gas can be effectively prevented from entering the battery module 100 through the sealing ring, and the safety of the working environment of the battery module 100 is guaranteed.
In some embodiments of the invention, the bottom sealing plate 3 comprises: the cooling plate 32 and the insulating layer, wherein the cooling pipeline is uniformly distributed on the cooling plate 32, the insulating layer comprises an insulating film, and the insulating film is arranged on the side surface of the cooling plate 32 facing the cell module 1; the top sealing plate 3 includes: a heat dissipation plate 33 and an insulating layer, wherein a heat dissipation grid 331 is formed on a side of the heat dissipation plate 33 away from the cell module 1, and the insulating layer is provided on a side of the heat dissipation plate 33 facing the cell module 1. The insulating film is used for electrical insulation between the sealing plate 3 and the battery cell 11, and safety risks caused by the conditions of electric leakage and the like of the battery module 100 are avoided.
Specifically, as shown in fig. 1, 2, and 12, a heat dissipation grill 331 is formed on the upper surface side of the heat dissipation plate 33, and the heat dissipation grill 311 is structured to increase the speed of heat dissipation. In some examples, inject the coolant liquid in the cooling pipeline, when electric core 11 has a thermal failure, because the upper and lower both ends of electric core 11 are direct with the top and the bottom closing plate 3 lug connection, therefore, the heat of electric core 11 can pass to the top and the bottom closing plate 3, when the temperature is too high, the top and the bottom closing plate 3 temperature also rises along with it, can cause the influence to other electric cores 11 between the two, through cooling pipeline and cooling plate 33 respectively to the cooling of bottom and top closing plate 3, make closing plate 3 temperature be in normal level, avoid influencing other non-defective products electric cores 11, the security of battery module 100 has been promoted.
It should be noted that the cooling plate 32 may also be a heating plate, the cooling pipeline may also be a heating pipeline, or both, and when the battery module 100 is used in a region with a low temperature, the battery endurance, the charging and other behaviors are restricted, so that the battery module 100 is heated by the heating pipeline to be at a normal operating temperature, and the adaptability of the battery module 100 to various environments is improved.
Further, the insulating film may also be an insulating heating film, and when the battery module 100 needs to be heated, the insulating heating film and the heating pipeline may be heated simultaneously, so as to improve the heating efficiency.
Preferably, the cooling pipeline or the heating pipeline is provided with a liquid interface, so that the liquid in the pipeline can be conveniently injected and discharged.
Therefore, the problem of abnormal top and bottom temperatures can be better handled by the heat dissipation plate 33 and the cooling plate 32, in some examples, the sealing plates 3 around the box module are respectively a front sealing plate, a rear sealing plate, a left frame and a right frame, and the heat insulation plates 2 are adhered between the front sealing plate, the rear sealing plate, the left frame and the right frame and the cell module 1.
Specifically, through setting up heat insulating board 2 between closing plate 3 and the electric core 11 all around for when single electric core 11 thermal runaway, heat insulating board 2 can prevent better that heat insulating capacity transmits to closing plate 3 all around, makes the temperature of box module maintain at normal level, avoids causing the influence to other yields batteries or consumer.
In a specific example, the front end sealing plate, the rear end sealing plate, the left frame and the right frame can be all hollow-out.
In some embodiments of the present invention, the battery module 100 further includes a detection module 4, the detection module 4 includes a plurality of collecting plates 41, each collecting plate 41 is formed with a plurality of detection contacts 411, each detection contact 411 is adapted to be connected to at least one of a positive electrode and a negative electrode of each battery cell 11, through the detection module 4, the electrical equipment can better know the operating state of the battery module 100, and the detection module 4 can detect information not limited to electrical energy.
Alternatively, the collecting plates 41 may be made of copper, aluminum, nickel, or other materials, preferably, the plurality of collecting plates 41 are nickel plates with a nickel content greater than 99%, and the plurality of collecting plates 41 are welded on the pole by laser, or connected by argon arc welding, ultrasonic welding, or other methods, which is not limited herein. Because gather piece 41 and electric core 11 utmost point post and link to each other, consequently detection module 4's structural configuration is installed with the prerequisite that does not shelter from first explosion-proof valve 111, avoids when electric core 11 pressure release, and first explosion-proof valve 111 is sheltered from by detection module 4, and then influences timeliness, the validity of electric core 11 pressure release.
In a specific example, the high voltage interface of the circuit of the cell module 1 and the low voltage interface of the detection module 4 may be mounted on at least one of the front end sealing plate 3, the rear end sealing plate 3, the left frame and the right frame, which is not limited herein.
It should be noted that, at present, an electric vehicle is formed by grouping a plurality of small modules, each of which is 3 strings, 4 strings, or 6 strings, and the maximum is not more than 50 strings, but the electric vehicle often needs more than 80 strings, and the optimum is often 96 strings to 108 strings, and the maximum efficiency of the motor can be exerted. One set of electric motor car battery system needs require according to whole car series-parallel connection, a lot of little modules, and other spare parts, assemble the battery box, it is troublesome that the equipment of battery system spare part is many, battery box protection battery module is mechanical simultaneously, safety on the sealing, and increase explosion-proof pressure release part on the battery box, ensure that battery system can be directional when the pressure release, safety release, but there is a battery to release, high-temperature gas is when explosion-proof valve, can disturb other batteries, lead to other electric core 11 to catch fire and take place thermal runaway.
In order to solve the above problems, the battery module 100 of the present application may include all the batteries and connection accessories required for a whole vehicle, a thermal management system (i.e., the cooling plate 32 in the present application), and an explosion-proof pressure relief system (i.e., the explosion-proof valve and the pressure relief device in the present application); the battery pack has few assembling parts and high integration level, reduces the cost of a battery system, has a heat insulation measure of a single electric core 11 and an explosion-proof valve pressure relief structure, and improves the use safety of the battery pack. Meanwhile, the battery pack adopts a sealing and high-strength frame structure design, a frame and a sealing design, so that a box body and box cover structure of the original battery system is replaced, and the battery pack can be independently arranged on a whole vehicle and is controlled by taking the whole vehicle as a control system when in use; after the device is matched with an independent control system, the device can be assembled on the whole vehicle flexibly in trial and assembly modes with lowest cost and high efficiency.
The detailed structure and the detailed operation of the battery module 100 according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 12.
The battery module 100 includes: the battery cell module comprises a battery cell module 1, a heat insulation module, a box body module and a detection module 4.
Referring to fig. 1 to 9, the cell module 1 is formed by serially connecting a plurality of cells 11, the positive poles and the negative poles of the cells 11 are respectively at two ends in the length direction, the adjacent cell 11 poles are electrically connected through a connection bar 12, and a first explosion-proof valve 111 is located at one end of the positive pole of the cell 11.
The heat insulation module comprises a plurality of heat insulation plates 2, one heat insulation plate 2 is bonded between two adjacent electric cores 11, the heat insulation plates 2 are bonded with electric wires through structural adhesive, the height of each heat insulation plate 2 is consistent with the height of each electric core 11, and referring to fig. 6, each heat insulation plate 2 comprises: a middle partition 21 and a stopper 22. The middle partition plate 21 is provided with a plurality of through holes, the diameter of each through hole is limited to 1-20mm, and the sum S1 of the areas of the through holes and the area S of the middle partition plate 21 meet the following conditions: s1 is less than or equal to 0.7S;
further, both ends are equipped with spacing portion 22 about heat insulating board 2, spacing portion 22 is equipped with dodge recess 221 in the new butt of electric core 11 installation back raindrop, be equipped with on spacing portion 22, dodge recess 221 position and the positive post of adjacent electric core 11 or negative pole post position correspond, be formed with constant head tank 222 on the dodge recess 221, it is protruding to be equipped with the location on the connecting row 12, after the constant head tank 222 was inserted to the location arch, fixed connection row 12 was in dodging recess 221, connecting row 12 highly is not more than dodging the recess 221 height.
The limiting part 22 is provided with a glue groove 223, the glue groove 223 and the connecting row 12 are filled with sealant, and the filling height of the sealant is not lower than the depth of the glue groove 223.
Referring to fig. 1 and 2, the box module includes six sealing plates 3, which are a front sealing plate, a rear sealing plate, a left frame, a right frame, a top sealing plate, and a bottom sealing plate.
The front end closing plate, the rear end closing plate, one side that left side frame and right frame are connected with electric core 11 is equipped with heat insulating board 2, six closing plates 3 and the cooperation of a plurality of heat insulating boards 2, constitute a plurality of sealed sub-installation chambeies, just be equipped with the second explosion-proof valve that corresponds with first explosion-proof valve 111 on the closing plate 3 of first explosion-proof, the sub-installation chamber that is equipped with electric core 11 is suitable for through sealed glue with the second explosion-proof valve that corresponds, and between first explosion-proof valve 111 and second explosion-proof valve, be equipped with the insulating layer on the closing plate 3.
Be formed with pressure release flue 31 of putting out a fire on front end closing plate and the rear end closing plate, be close to 11 one sides of electric core and be equipped with first pressure release hole, keep away from 11 one sides of electric core and be equipped with the second pressure release hole 311 with first pressure release hole one-to-one, first pressure release hole, second pressure release hole 311 are concentric with first explosion-proof valve 111, and the diameter is greater than first explosion-proof valve 111. High-temperature and high-pressure gas released by the battery cell 11 enters the fire extinguishing pressure relief flue 31 through the first pressure relief hole, pressure relief openings 312 are formed at two ends of the fire extinguishing pressure relief flue 31, and the gas entering the flue is released to the outside through the second pressure relief hole 311 and the pressure relief openings 312.
Referring to fig. 1, the bottom sealing plate 3 includes: the cooling plate 32 and the insulating layer, wherein the cooling pipeline is uniformly distributed on the cooling plate 32, the insulating layer comprises an insulating film, and the insulating film is arranged on the side surface of the cooling plate 32 facing the cell module 1; the top sealing plate 3 includes: a heat dissipation plate 33 and an insulating layer, wherein a heat dissipation grid 331 is formed on a side of the heat dissipation plate 33 away from the cell module 1, and the insulating layer is provided on a side of the heat dissipation plate 33 facing the cell module 1.
The box module still includes: the upper sealing ring covers the top of the heat insulation plate 2 and the top opening of the sub-installation cavity, the upper sealing ring is located at the lower end of the top sealing plate 3, the lower sealing ring covers the bottom of the heat insulation plate 2 and the bottom opening of the sub-installation cavity, and the lower sealing ring is located at the upper end of the bottom sealing plate 3.
Referring to fig. 2, the detection module 4 includes a plurality of collecting plates 41, and a plurality of detection contacts 411 are formed on each collecting plate 41, and the detection contacts 411 are connected to the positive electrode of the battery cell 11.
The detailed operation of the battery module 100 according to one embodiment of the present invention will be described below with reference to fig. 1 to 12.
When a certain electric core 11 takes place thermal runaway in the battery module 100, the high-temperature high-pressure gas or flame generated instantaneously inside the electric core 11 can burst the first explosion-proof valve 111, and is discharged to the fire extinguishing pressure relief flue 31 through the first pressure relief hole, and the fire extinguishing pressure relief flue 31 discharges gas through the second pressure relief hole 311 and the pressure relief opening after being subjected to fire extinguishing treatment. In this process, because electric core 11 alone all is located in sealed sub-installation intracavity, consequently can not cause the damage to adjacent yields electric core 11, guaranteed battery module 100's safety.
Other constructions and operations of the battery module 100 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the terms "some embodiments," "optionally," "further," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery module is characterized by comprising
The battery cell module comprises a plurality of battery cells, the battery cells are suitable for being stacked and then connected in series or in parallel, and a first explosion-proof valve of each battery cell is positioned at least one end of each battery cell in the length direction;
the separator module comprises a plurality of heat insulation plates, and one heat insulation plate is suitable for being bonded between every two adjacent battery cores;
the box module, the box module includes six closing plates, six the closing plate is suitable for the bonding respectively six sides of electricity core module, six after the bonding the closing plate be suitable for with a plurality of the heat insulating board cooperation to constitute a plurality of sealed sub-installation chambeies, just right first explosion-proof valve be formed with on the closing plate a plurality of with the second explosion-proof valve that first explosion-proof valve corresponds installs electricity core sub-installation chamber with correspond the second explosion-proof valve is suitable for through sealed glue sealed, just is in first explosion-proof valve with between the second explosion-proof valve, be equipped with the insulating layer on the closing plate.
2. The battery module according to claim 1, wherein the heat insulating plate comprises:
the middle partition plate is provided with a plurality of through holes, the diameter of each through hole is limited to 1-20mm, and the sum S1 of the areas of the through holes and the area S of the middle partition plate satisfy the following conditions: s1 is less than or equal to 0.7S;
the battery cell comprises a limiting part, wherein the limiting part is arranged at least one end of the left end and the right end of the middle partition board, the limiting part is suitable for extending along the direction perpendicular to the length direction of the middle partition board, the side face of the battery cell is suitable for being attached to the middle partition board, and the left end or the right end of the battery cell is suitable for being abutted to the limiting part.
3. The battery module according to claim 2, wherein an avoiding groove is formed in the limiting portion, and in the up-down direction, the avoiding groove corresponds to the positive electrode or the negative electrode of the battery cell, and the two adjacent connection rows of the battery cells connected in series or in parallel are adapted to be matched with the avoiding groove and hidden in the avoiding groove.
4. The battery module according to claim 3, wherein a positioning groove is formed in the middle of the avoiding groove, and a positioning protrusion is formed on the connecting row, and the positioning groove is adapted to be matched with the positioning protrusion.
5. The battery module according to claim 2, wherein the position-limiting portion has a glue groove formed thereon, and when the sealing plate is bonded to the position opposite to the position-limiting portion, the glue groove is adapted to be filled with a sealant, and a filling height of the sealant is greater than a groove depth of the glue groove.
6. The battery module according to claim 1, wherein a fire extinguishing pressure relief flue extending in the length direction is formed in the sealing plate opposite to the explosion-proof valve, a first pressure relief hole is formed in one side of the sealing plate facing the cell module, a plurality of first pressure relief holes are formed in the sealing plate, the plurality of first pressure relief holes correspond to the plurality of sub-mounting cavities one by one, and high-temperature and high-pressure gas or flame released by the cell is suitable for entering the fire extinguishing pressure relief flue from the first pressure relief hole.
7. The battery module according to claim 6, wherein a second pressure relief hole is formed in one side, away from the cell module, of the sealing plate, a plurality of second pressure relief holes are formed, the first pressure relief holes and the second pressure relief holes are aligned to each other in the length direction of the cell, a pressure relief opening is formed in at least one end, in the length direction, of the fire extinguishing pressure relief flue, and the high-temperature and high-pressure gas or flame entering the fire extinguishing pressure relief flue is suitable for being released to the outside from the pressure relief opening and the second pressure relief holes after the fire extinguishing treatment of the fire extinguishing pressure relief flue.
8. The battery module according to claim 1, wherein the case module further comprises:
the upper sealing ring covers the top of the heat insulation plate and at least one part of the opening at the top of the sub-installation cavity, is positioned at the lower end of the sealing plate at the top, and is suitable for being matched with the sealing plate at the top to seal the top of the sub-installation cavity;
the lower sealing ring covers the bottom of the heat insulation plate and at least one part of the opening at the bottom of the sub-installation cavity, is positioned at the upper end of the sealing plate at the bottom, and is suitable for being matched with the sealing plate at the bottom to seal the bottom of the sub-installation cavity.
9. The battery module according to claim 1,
the sealing plate of the bottom part includes: the battery cell module comprises a cooling plate and an insulating layer, wherein cooling pipelines are uniformly distributed on the cooling plate, the insulating layer comprises an insulating film, and the insulating film is arranged on the side surface of the cooling plate facing the battery cell module;
the sealing plate of the top portion includes: the battery cell module comprises a heat dissipation plate and an insulating layer, wherein a heat dissipation grid is formed on one side, away from the battery cell module, of the heat dissipation plate, and the insulating layer is arranged on one side, facing the battery cell module, of the heat dissipation plate.
10. The battery module according to claim 1, further comprising:
the detection module comprises a plurality of acquisition pieces, a plurality of detection contacts are formed on each acquisition piece, and each detection contact is suitable for being connected with at least one of the positive pole and the negative pole of each battery cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010575287.6A CN111584791A (en) | 2020-06-22 | 2020-06-22 | Battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010575287.6A CN111584791A (en) | 2020-06-22 | 2020-06-22 | Battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111584791A true CN111584791A (en) | 2020-08-25 |
Family
ID=72111248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010575287.6A Pending CN111584791A (en) | 2020-06-22 | 2020-06-22 | Battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111584791A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103598A (en) * | 2020-09-24 | 2020-12-18 | 湖北亿纬动力有限公司 | Battery module capable of delaying thermal diffusion |
| CN112290143A (en) * | 2020-10-21 | 2021-01-29 | 孚能科技(赣州)股份有限公司 | Power battery and vehicle |
| CN112615094A (en) * | 2020-11-27 | 2021-04-06 | 北京汽车研究总院有限公司 | Battery module for vehicle and vehicle |
| CN112687992A (en) * | 2020-12-28 | 2021-04-20 | 江苏塔菲尔动力系统有限公司 | Fireproof structure for battery module and battery module |
| CN112701393A (en) * | 2020-12-29 | 2021-04-23 | 长城汽车股份有限公司 | Battery module and have its vehicle |
| CN114374036A (en) * | 2021-11-23 | 2022-04-19 | 华为技术有限公司 | Battery package and thermal runaway protector of electric core subassembly |
| CN114628844A (en) * | 2022-03-24 | 2022-06-14 | 广州小鹏汽车科技有限公司 | Battery box, power battery assembly and vehicle |
| CN115149201A (en) * | 2021-03-31 | 2022-10-04 | 比亚迪股份有限公司 | Battery and battery pack |
| CN115347297A (en) * | 2022-08-19 | 2022-11-15 | 东风汽车集团股份有限公司 | But split electricity core module |
Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050147874A1 (en) * | 2003-12-10 | 2005-07-07 | Johnson Controls Technolgy Company | Venting system for battery |
| WO2008044430A1 (en) * | 2006-10-13 | 2008-04-17 | Panasonic Corporation | Battery pack and battery-mounted device |
| WO2011033713A1 (en) * | 2009-09-18 | 2011-03-24 | パナソニック株式会社 | Battery module |
| US20110200856A1 (en) * | 2009-07-17 | 2011-08-18 | Shunsuke Yasui | Battery module and battery pack using the same |
| US20120021260A1 (en) * | 2010-01-29 | 2012-01-26 | Panasonic Corporation | Battery module |
| WO2012017586A1 (en) * | 2010-08-06 | 2012-02-09 | パナソニック株式会社 | Cell module |
| WO2014156001A1 (en) * | 2013-03-29 | 2014-10-02 | 三洋電機株式会社 | Battery pack |
| WO2015045404A1 (en) * | 2013-09-30 | 2015-04-02 | パナソニックＩｐマネジメント株式会社 | Battery unit |
| CN104752639A (en) * | 2013-12-31 | 2015-07-01 | 比亚迪股份有限公司 | Power battery module |
| US20170279099A1 (en) * | 2016-03-23 | 2017-09-28 | East Penn Manufacturing Co. | Battery Cover |
| WO2018061894A1 (en) * | 2016-09-27 | 2018-04-05 | パナソニックＩｐマネジメント株式会社 | Battery, battery module and method for producing separator |
| US20180108888A1 (en) * | 2016-10-19 | 2018-04-19 | Contemporary Amperex Technology Co., Limited | Battery module |
| CN208385475U (en) * | 2018-05-10 | 2019-01-15 | 威睿电动汽车技术（苏州）有限公司 | A kind of battery pack body structure with heat sinking function |
| CN208400900U (en) * | 2018-06-12 | 2019-01-18 | 苏州宇量电池有限公司 | A kind of lithium battery safety device and battery component using the thermal insulation board containing liquid |
| CN109449348A (en) * | 2018-09-19 | 2019-03-08 | 肇庆理士电源技术有限公司 | A kind of battery |
| US20190157636A1 (en) * | 2016-07-29 | 2019-05-23 | Apple Inc. | High-density battery pack |
| CN110165113A (en) * | 2019-01-09 | 2019-08-23 | 比亚迪股份有限公司 | Power battery pack and electric vehicle |
| CN110190212A (en) * | 2018-12-29 | 2019-08-30 | 比亚迪股份有限公司 | Power battery pack and vehicle |
| CN110190216A (en) * | 2019-03-08 | 2019-08-30 | 比亚迪股份有限公司 | Power battery pack, energy storage device and electric vehicle |
| CN110379962A (en) * | 2019-01-09 | 2019-10-25 | 比亚迪股份有限公司 | Power battery pack, energy storage device and electric vehicle |
| CN110571387A (en) * | 2019-10-12 | 2019-12-13 | 荣盛盟固利新能源科技有限公司 | Integrated battery module |
| CN210015897U (en) * | 2019-08-08 | 2020-02-04 | 深圳市雄韬锂电有限公司 | Battery protection device and power battery box |
| WO2020059297A1 (en) * | 2018-09-20 | 2020-03-26 | 三洋電機株式会社 | Battery module |
| CN210403875U (en) * | 2019-08-29 | 2020-04-24 | 惠州比亚迪实业有限公司 | Battery module, power battery package and vehicle |
| CN210535737U (en) * | 2019-10-29 | 2020-05-15 | 上海蔚来汽车有限公司 | Heat insulation assembly of battery pack |
| CN210668459U (en) * | 2019-08-20 | 2020-06-02 | 深圳安凯利电池有限公司 | Explosion-proof flame retardant structure of lithium cell |
| WO2020111042A1 (en) * | 2018-11-29 | 2020-06-04 | パナソニックＩｐマネジメント株式会社 | Electric power storage module |
| CN210805860U (en) * | 2019-10-08 | 2020-06-19 | 昆山宝创新能源科技有限公司 | Battery pack |
| CN212011107U (en) * | 2020-06-22 | 2020-11-24 | 昆山宝创新能源科技有限公司 | Battery module |
-
2020
- 2020-06-22 CN CN202010575287.6A patent/CN111584791A/en active Pending
Patent Citations (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050147874A1 (en) * | 2003-12-10 | 2005-07-07 | Johnson Controls Technolgy Company | Venting system for battery |
| WO2008044430A1 (en) * | 2006-10-13 | 2008-04-17 | Panasonic Corporation | Battery pack and battery-mounted device |
| US20110200856A1 (en) * | 2009-07-17 | 2011-08-18 | Shunsuke Yasui | Battery module and battery pack using the same |
| WO2011033713A1 (en) * | 2009-09-18 | 2011-03-24 | パナソニック株式会社 | Battery module |
| US20120164490A1 (en) * | 2009-09-18 | 2012-06-28 | Toshiki Itoi | Battery module |
| US20120021260A1 (en) * | 2010-01-29 | 2012-01-26 | Panasonic Corporation | Battery module |
| WO2012017586A1 (en) * | 2010-08-06 | 2012-02-09 | パナソニック株式会社 | Cell module |
| CN103081164A (en) * | 2010-08-06 | 2013-05-01 | 松下电器产业株式会社 | Cell module |
| WO2014156001A1 (en) * | 2013-03-29 | 2014-10-02 | 三洋電機株式会社 | Battery pack |
| WO2015045404A1 (en) * | 2013-09-30 | 2015-04-02 | パナソニックＩｐマネジメント株式会社 | Battery unit |
| CN104752639A (en) * | 2013-12-31 | 2015-07-01 | 比亚迪股份有限公司 | Power battery module |
| US20170279099A1 (en) * | 2016-03-23 | 2017-09-28 | East Penn Manufacturing Co. | Battery Cover |
| US20190157636A1 (en) * | 2016-07-29 | 2019-05-23 | Apple Inc. | High-density battery pack |
| WO2018061894A1 (en) * | 2016-09-27 | 2018-04-05 | パナソニックＩｐマネジメント株式会社 | Battery, battery module and method for producing separator |
| CN109643778A (en) * | 2016-09-27 | 2019-04-16 | 松下知识产权经营株式会社 | The manufacturing method of battery, battery module and separator |
| US20180108888A1 (en) * | 2016-10-19 | 2018-04-19 | Contemporary Amperex Technology Co., Limited | Battery module |
| CN107968168A (en) * | 2016-10-19 | 2018-04-27 | 宁德时代新能源科技股份有限公司 | Battery module |
| CN208385475U (en) * | 2018-05-10 | 2019-01-15 | 威睿电动汽车技术（苏州）有限公司 | A kind of battery pack body structure with heat sinking function |
| CN208400900U (en) * | 2018-06-12 | 2019-01-18 | 苏州宇量电池有限公司 | A kind of lithium battery safety device and battery component using the thermal insulation board containing liquid |
| CN109449348A (en) * | 2018-09-19 | 2019-03-08 | 肇庆理士电源技术有限公司 | A kind of battery |
| WO2020059297A1 (en) * | 2018-09-20 | 2020-03-26 | 三洋電機株式会社 | Battery module |
| CN112703632A (en) * | 2018-09-20 | 2021-04-23 | 三洋电机株式会社 | Battery module |
| WO2020111042A1 (en) * | 2018-11-29 | 2020-06-04 | パナソニックＩｐマネジメント株式会社 | Electric power storage module |
| CN110190212A (en) * | 2018-12-29 | 2019-08-30 | 比亚迪股份有限公司 | Power battery pack and vehicle |
| CN110379962A (en) * | 2019-01-09 | 2019-10-25 | 比亚迪股份有限公司 | Power battery pack, energy storage device and electric vehicle |
| CN210167401U (en) * | 2019-01-09 | 2020-03-20 | 比亚迪股份有限公司 | Monomer battery, power battery package and electric motor car |
| CN110165113A (en) * | 2019-01-09 | 2019-08-23 | 比亚迪股份有限公司 | Power battery pack and electric vehicle |
| CN110190216A (en) * | 2019-03-08 | 2019-08-30 | 比亚迪股份有限公司 | Power battery pack, energy storage device and electric vehicle |
| CN210015897U (en) * | 2019-08-08 | 2020-02-04 | 深圳市雄韬锂电有限公司 | Battery protection device and power battery box |
| CN210668459U (en) * | 2019-08-20 | 2020-06-02 | 深圳安凯利电池有限公司 | Explosion-proof flame retardant structure of lithium cell |
| CN210403875U (en) * | 2019-08-29 | 2020-04-24 | 惠州比亚迪实业有限公司 | Battery module, power battery package and vehicle |
| CN210805860U (en) * | 2019-10-08 | 2020-06-19 | 昆山宝创新能源科技有限公司 | Battery pack |
| CN110571387A (en) * | 2019-10-12 | 2019-12-13 | 荣盛盟固利新能源科技有限公司 | Integrated battery module |
| CN210535737U (en) * | 2019-10-29 | 2020-05-15 | 上海蔚来汽车有限公司 | Heat insulation assembly of battery pack |
| CN212011107U (en) * | 2020-06-22 | 2020-11-24 | 昆山宝创新能源科技有限公司 | Battery module |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103598A (en) * | 2020-09-24 | 2020-12-18 | 湖北亿纬动力有限公司 | Battery module capable of delaying thermal diffusion |
| CN112290143A (en) * | 2020-10-21 | 2021-01-29 | 孚能科技(赣州)股份有限公司 | Power battery and vehicle |
| CN112615094A (en) * | 2020-11-27 | 2021-04-06 | 北京汽车研究总院有限公司 | Battery module for vehicle and vehicle |
| CN112687992A (en) * | 2020-12-28 | 2021-04-20 | 江苏塔菲尔动力系统有限公司 | Fireproof structure for battery module and battery module |
| CN112687992B (en) * | 2020-12-28 | 2021-11-05 | 江苏塔菲尔动力系统有限公司 | Battery module with fireproof structure |
| CN112701393B (en) * | 2020-12-29 | 2023-06-09 | 长城汽车股份有限公司 | Battery module and vehicle with same |
| CN112701393A (en) * | 2020-12-29 | 2021-04-23 | 长城汽车股份有限公司 | Battery module and have its vehicle |
| CN115149201B (en) * | 2021-03-31 | 2023-09-05 | 比亚迪股份有限公司 | Battery and battery pack |
| CN115149201A (en) * | 2021-03-31 | 2022-10-04 | 比亚迪股份有限公司 | Battery and battery pack |
| CN114374036A (en) * | 2021-11-23 | 2022-04-19 | 华为技术有限公司 | Battery package and thermal runaway protector of electric core subassembly |
| CN114628844A (en) * | 2022-03-24 | 2022-06-14 | 广州小鹏汽车科技有限公司 | Battery box, power battery assembly and vehicle |
| CN115347297A (en) * | 2022-08-19 | 2022-11-15 | 东风汽车集团股份有限公司 | But split electricity core module |
| CN115347297B (en) * | 2022-08-19 | 2023-12-22 | 东风汽车集团股份有限公司 | Detachable battery core module and echelon utilization method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111584791A (en) | Battery module | |
| CN212011107U (en) | Battery module | |
| CN211404606U (en) | Safety structure and battery package of battery module | |
| EP3641013B1 (en) | Protective assembly, sealing cover, and container | |
| WO2022143131A1 (en) | Battery module and vehicle provided with same | |
| CN111584979A (en) | Battery module | |
| EP4057424A1 (en) | Traction battery pack with heat-insulating assembly | |
| CN111584978A (en) | Battery module | |
| KR20210092039A (en) | Battery Module Including Flame Retardant Sheet, Battery Rack Including the Same, and Power Storage System | |
| US20110091749A1 (en) | Battery Pack | |
| CN110828747A (en) | Thermal protection system for power battery | |
| CN212434785U (en) | Battery module, battery pack including the battery module, and energy storage system including the battery pack | |
| CN217719776U (en) | Battery core and cover plate assembly thereof, lithium battery and vehicle | |
| CN112652857A (en) | Power battery, thermal diffusion protection method of power battery and vehicle | |
| CN211320174U (en) | Fire extinguishing device of explosion-proof power box | |
| CN114303277B (en) | Battery module and battery pack including the same | |
| JP2023531844A (en) | Battery pack and device using the battery pack as a power supply | |
| CN210628393U (en) | Battery, battery module and battery system | |
| KR102479561B1 (en) | Safety protection and control method and device of battery energy storage module | |
| CN219873733U (en) | Battery and electric equipment | |
| CN219067061U (en) | Battery pack | |
| KR20210133534A (en) | Battery pack and device including the same | |
| CN218351654U (en) | Battery pack | |
| CN217768663U (en) | Explosion-proof valve, electric core, lithium cell and vehicle | |
| CN212725427U (en) | Battery module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |