CN215644726U - Lithium battery module - Google Patents
Lithium battery module Download PDFInfo
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- CN215644726U CN215644726U CN202122188180.9U CN202122188180U CN215644726U CN 215644726 U CN215644726 U CN 215644726U CN 202122188180 U CN202122188180 U CN 202122188180U CN 215644726 U CN215644726 U CN 215644726U
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 43
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000009413 insulation Methods 0.000 claims abstract description 81
- 238000002791 soaking Methods 0.000 claims abstract description 45
- 239000003999 initiator Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 150000002641 lithium Chemical class 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000010445 mica Substances 0.000 description 4
- 229910052618 mica group Inorganic materials 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000004964 aerogel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- -1 graphite alkene Chemical class 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052627 muscovite Inorganic materials 0.000 description 1
- 229910052628 phlogopite Inorganic materials 0.000 description 1
- 239000012994 photoredox catalyst Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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- 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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Abstract
The utility model belongs to the field of lithium batteries, and particularly relates to a lithium battery module. The battery comprises a plurality of single batteries, wherein each single battery comprises a plurality of battery cell units, and each battery cell unit comprises a first battery cell group, a second battery cell group, a heat insulation device and a soaking device; the first electric core group is provided with a first side part, one side of the second electric core group facing the first side part is a second side part, the first side part and the second side part correspond in position, the heat insulation device comprises a central heat insulation wall, and the central heat insulation wall is arranged between the first side part and the second side part; the first electric core group comprises a plurality of first electric cores, the soaking device is arranged between the adjacent first electric cores and comprises a first soaking film, a second soaking film and a heat insulation film, and the heat insulation film is connected between the first soaking film and the second soaking film. The utility model provides a lithium battery module, which solves the problem that the existing lithium battery module is poor in heat insulation and soaking property.
Description
Technical Field
The utility model belongs to the field of lithium batteries, and particularly relates to a lithium battery module.
Background
In the field of batteries, lithium batteries are more and more widely applied because the lithium batteries have the characteristics of high specific energy, good charge and discharge characteristics and long cycle life on one hand, and the problem of hydrogen evolution and acid evolution cannot be caused when the lithium batteries are used on the other hand. However, in recent years, the safety of lithium batteries has been more and more concerned, and lithium batteries are taken as power sources of naval vessels as an example: the naval vessel has extremely high requirements on safety, and due to the special working environment, personnel are not easy to escape when the naval vessel has an accident. In addition, when the lithium battery is used as the only power source of the naval vessel, once serious thermal diffusion or even fire occurs, the whole power source is affected, so that the naval vessel loses power, and the consequences are unreasonable. Therefore, need to take precautions against the thermal runaway risk of lithium cell, the lithium cell module in the lithium cell should have high security and fire-retardant explosion-proof ability to satisfy safe user demand.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a lithium battery module, this lithium battery module has solved the current lithium battery module heat-proof quality and the not good problem of soaking nature.
In order to solve the technical problems, the utility model adopts the following technical scheme: the lithium battery module comprises a plurality of single batteries, each single battery comprises a plurality of battery cell units, and each battery cell unit comprises a first battery cell group, a second battery cell group, a heat insulation device and a soaking device;
the first electric core group is provided with a first side part, one side of the second electric core group facing the first side part is a second side part, the first side part and the second side part correspond in position, the heat insulation device comprises a central heat insulation wall, and the central heat insulation wall is arranged between the first side part and the second side part;
the first electric core group comprises a plurality of first electric cores, the soaking device is arranged between the adjacent first electric cores and comprises a first soaking film, a second soaking film and a heat insulation film, and the heat insulation film is connected between the first soaking film and the second soaking film.
Further, the cell unit further comprises a third cell group, one side of the second cell group, which is away from the second side, is a fourth side, one side of the third cell group, which is towards the fourth side, is a seventh side, the fourth side corresponds to the seventh side, and the central heat insulation wall is arranged between the fourth side and the seventh side.
The battery cell assembly comprises an insulating wall and a single battery case for mounting a single battery cell unit, wherein the first battery core group and the second battery core group are positioned in the single battery case, the single battery case comprises a first side wall, a second side wall, a third side wall and a fourth side wall, a battery cell unit mounting cavity is formed in the first side wall, the second side wall, the third side wall and the fourth side wall, the first side wall and the second side wall are oppositely arranged, and the third side wall and the fourth side wall are oppositely arranged;
the heat insulation device further comprises a first heat insulation wall, a second heat insulation wall and a third heat insulation wall;
the side of the first electric core group, which is far away from the first side part, is a third side part, the third side part corresponds to the first side wall in position, and the first heat insulation wall is arranged between the third side part and the first side wall;
one side of the second electric core group, which is far away from the second side, is a fourth side, the fourth side corresponds to the second side wall in position, and the second heat insulation wall is arranged between the fourth side and the second side wall;
one end of the first electric core group and the second electric core group, which faces the third side wall, is a fifth side part, the fifth side part corresponds to the third side wall in position, and the third heat insulation wall is arranged between the fifth side part and the third side wall;
one end of the first electric core group deviating from the fifth side part is a sixth side part, the sixth side part corresponds to the fourth side wall in position, the insulating wall is arranged between the sixth side part and the fourth side wall, and the fourth side wall is provided with a temperature sensing part.
Further, the heat insulation device further comprises a fourth heat insulation wall and a fifth heat insulation wall, the fourth heat insulation wall is arranged at the bottom of the first electric core group and the bottom of the second electric core group, the fifth heat insulation wall is arranged at the top of the first electric core group and the top of the second electric core group, and the fifth heat insulation wall is provided with a working hole.
Further, an insulating cover is included, and the insulating cover is connected to the top of the fifth heat insulation wall.
Further, the fireproof insulation cover comprises a fireproof felt which is arranged on the top of the insulation cover.
Further, still include the module shell, the module shell includes module bottom plate, module apron and a plurality of module curb plate, module bottom plate, module apron and a plurality of module curb plate surround and form battery cell assembly chamber, and the electric core unit who is connected with heat-proof device, soaking device, battery cell shell, insulating wall, insulating boot and fire prevention felt forms one-level battery cell, one-level battery cell is a plurality of, a plurality of one-level battery cells install in proper order in battery cell assembly chamber along the direction of height of module shell.
The anti-explosion battery pack further comprises a heat insulation belt, an anti-explosion valve and a battery management system, wherein the heat insulation belt is arranged on the outer wall of the plurality of module side plates; the explosion-proof valve is arranged on the module cover plate; the battery management system is located in the module shell and used for detecting air pressure in the module shell.
Further, still include extinguishing device, extinguishing device includes extinguishing container and heat initiator, and extinguishing container sets up in the inboard of module apron, and extinguishing container's inside is equipped with the material chamber that is used for the holding medicament of putting out a fire, and the one end and the extinguishing container of heat initiator are connected, and the other end of heat initiator contacts with the temperature sensing portion of all fourth lateral walls.
Further, the outer surface of the first battery cell is provided with a layer of insulating film.
In the utility model, the lithium battery module comprises a plurality of single batteries, each single battery comprises a plurality of battery cell units, and each battery cell unit comprises a first battery cell group, a second battery cell group, a heat insulation device and a soaking device; when first electric core group and second electric core group generate heat, heat-proof device has thermal-insulated insulating function, blocks the conduction of heat between the electric core, avoids the emergence of thermal diffusion. The soaking device can quickly balance heat, and avoid cell thermal runaway caused by nonuniform cell temperature distribution due to accumulation of local heat. This lithium battery module has thermal-insulated and soaking structure, can effectively prevent heat and stretch, and then satisfies safe user demand.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the specific structure of the heat insulation device, the soaking device, the single battery case, etc.;
FIG. 3 is a schematic structural view of a fire-proof felt, a module case, a battery management system and a fire extinguishing apparatus;
FIG. 4 is a schematic view of an assembly structure based on FIG. 3;
FIG. 5 is a schematic structural view of an insulating band and an explosion-proof valve;
description of reference numerals:
1. a first electric core group; 10. a first cell; 2. a second electric core group; 20. a second cell; 3. a thermal insulation device; 30. a central insulating wall; 31. a first insulating wall; 32. a second insulating wall; 33. a third insulating wall; 34. a fourth insulating wall; 35. a fifth insulating wall; 350. a working hole; 4. a soaking device; 41. a first soaking film; 42. a second soaking film; 43. a heat insulating film; 5. a single battery case; 51. a first side wall; 52. a second side wall; 53. a third side wall; 54. a fourth side wall; 541. a temperature sensing unit; 6. an insulating wall; 7. an insulating cover; 8. a fire-proof felt; 91. a heat insulating tape; 92. an explosion-proof valve; 93. a fire extinguishing device; 931. a fire extinguishing container; 932. a thermal initiator; 100. a single battery; 200. a battery management system; 110. a module base plate; 120. a module cover plate; 130. a module side plate.
Detailed Description
The utility model is further explained below with reference to the drawings and examples. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, the lithium battery module comprises a plurality of single batteries 100, wherein each single battery 100 comprises a plurality of cell units, and each cell unit comprises a first cell group 1, a second cell group 2, a heat insulation device 3 and a soaking device 4; the first electric core group 1 is provided with a first side part, one side of the second electric core group 2 facing the first side part is a second side part, the first side part and the second side part correspond in position, the heat insulation device 3 comprises a central heat insulation wall 30, and the central heat insulation wall 30 is arranged between the first side part and the second side part; the first electric core group 1 comprises a plurality of first electric cores 10, the soaking device 4 is arranged between the adjacent first electric cores 10, the soaking device 4 comprises a first soaking film 41, a second soaking film 42 and a heat insulation film 43, and the heat insulation film 43 is connected between the first soaking film 41 and the second soaking film 42.
In order to enhance the heat soaking effect in the second electric core group 2, the second electric core group 2 comprises a plurality of second electric cores 20, and the heat soaking device 4 is further arranged between the adjacent second electric cores 20.
Taking the soaking device 4 disposed on the first electrical core 10 as an example, when the first electrical core 10 generates heat, the soaking device 4 can rapidly balance the heat, so as to avoid the local heat accumulation to cause the uneven temperature distribution of the first electrical core 10, and meanwhile, the heat insulation film 43 and the central heat insulation wall 30 can block the spreading of the heat between the adjacent first electrical cores 10. Preferably, the thickness of the first soaking film 41 and the second soaking film 42 is 0.02-0.1 mm, and the thermal conductivity is 1200-1600W/(m.K). Preferably, the first and second homothermal films 41 and 42 are graphene or graphite sheets. At this moment, graphite alkene or graphite flake on the one hand heat conductivity is high, can satisfy quick equilibrium heat, reduce temperature gradient's demand, and on the other hand is because its density is low, compares in metal conducting strip, and graphite alkene and graphite flake can not cause too much influence to the holistic weight of battery module.
Preferably, the thickness of the heat insulation film 43 is 0.1mm to 2 mm. The heat insulation film 43 is preferably a mica plate with the thickness of 0.1 mm-1.0 mm.
Preferably, the central insulating wall 30 has a thickness of 0.5mm to 2.0 mm.
For defining other arrangement structures of the cell units, the cell units further comprise a third cell group, one side of the second cell group 2 departing from the second side part is a fourth side part, one side of the third cell group facing the fourth side part is a seventh side part, the fourth side part corresponds to the seventh side part in position, and the central heat insulation wall 30 is arranged between the fourth side part and the seventh side part.
Specifically, in the cell unit, taking the arrangement of the first cell group 1 and the second cell group 2 as an example, the following structural description is made:
in order to enhance the lateral heat insulation function of the cell units, an insulating wall 6 and a single cell case 5 for installing the single cell unit are introduced, the first cell group 1 and the second cell group 2 are positioned in the single cell case 5, the single cell case 5 comprises a first side wall 51, a second side wall 52, a third side wall 53 and a fourth side wall 54, the first side wall 51, the second side wall 52, the third side wall 53 and the fourth side wall 54 form a cell unit installation cavity, the first side wall 51 and the second side wall 52 are oppositely arranged, and the third side wall 53 and the fourth side wall 54 are oppositely arranged;
the thermal insulation device 3 further comprises a first thermal insulation wall 31, a second thermal insulation wall 32 and a third thermal insulation wall 33;
the side of the first electric core group 1, which is far away from the first side, is a third side, which corresponds to the first side wall 51, and the first heat insulation wall 31 is arranged between the third side and the first side wall 51;
the side of the second electric core group 2 facing away from the second side is a fourth side corresponding to the second side wall 52, and the second heat insulation wall 32 is arranged between the fourth side and the second side wall 52;
one end of the first and second electric core sets 1 and 2 facing the third side wall 53 is a fifth side corresponding to the third side wall 53, and the third insulating wall 33 is disposed between the fifth side and the third side wall 53;
one end of the first electric core group 1 and the second electric core group 2, which is far away from the fifth side portion, is a sixth side portion, the sixth side portion corresponds to the fourth side wall 54, the insulating wall 6 is arranged between the sixth side portion and the fourth side wall 54, and the fourth side wall 54 is provided with a temperature sensing portion 541. The temperature sensing unit 541 may be partially or entirely provided on the fourth side wall 54.
Preferably, the thickness of the insulating wall 6 is 0.2mm to 1.0 mm. The insulating wall 6 is made of PI, PTFE or PC + ABS composite material, and the thickness of the insulating wall is 0.05 mm-1.0 mm.
The introduction of the first heat insulation wall 31, the second heat insulation wall 32 and the third heat insulation wall 33 can further prevent and control heat diffusion, and prevent heat from being conducted to other cells through the cell casing 5.
The temperature sensing unit 541 is used for detecting the temperatures of the first electric core assembly 1 and the second electric core assembly 2.
For on the basis of the side direction thermal-insulated function at electric core unit, further strengthen the thermal-insulated function of electric core unit top and bottom, heat-proof device 3 still includes fourth thermal-insulated wall 34 and fifth thermal-insulated wall 35, fourth thermal-insulated wall 34 sets up in the bottom of first electric core group 1 and second electric core group 2, fifth thermal-insulated wall 35 sets up in the top of first electric core group 1 and second electric core group 2, has seted up work hole 350 on the fifth thermal-insulated wall 35, work hole 350 makes things convenient for utmost point post and busbar to connect on the one hand, and gaseous the releasing when on the other hand makes things convenient for the relief valve to open.
Specifically, the materials of the heat insulating film 43 and the heat insulating wall include, but are not limited to, aerogel, mica, and PC + ABS composite material, and the heat insulating wall should have a heat insulating function and also have an insulating function.
In order to enhance the insulating effect on the top of the cell unit, an insulating cover 7 is introduced, and the insulating cover 7 is connected to the top of the fifth insulating wall 35.
Further, the insulating cover 7 may have a U-shaped structure, and is connected to the cell unit by an adhesive. The insulating cover 7 can be made of mica plate, PP or PC plus ABS material, and the thickness is 1.0 mm-2.0 mm.
To enhance the control of thermal runaway, a fire-blocking felt 8 is introduced, said fire-blocking felt 8 being arranged on top of the insulating cover 7.
For the concrete connection relation of making clear of electric core unit and lithium battery module, introduce the module shell, the module shell includes module bottom plate 110, module apron 120 and a plurality of module curb plate 130, module bottom plate 110, module apron 120 and a plurality of module curb plate 130 surround and form battery cell assembly chamber, are connected with heat-proof device 3, soaking device 4, battery cell 5, insulating wall 6, insulating boot 7 and the battery cell unit of fire prevention felt 8 and form one-level battery cell, one-level battery cell is a plurality of, a plurality of one-level battery cells install in battery cell assembly chamber in proper order along the direction of height of module shell.
Preferably, the fireproof felt 8 is an aerogel fireproof felt with a thickness of 1.0mm to 3.0 mm. The introduction of fire prevention felt 8, when thermal runaway takes place on the one hand, the relief valve of first electricity core 10 is opened, and fire prevention felt 8 can prevent that the combustible gas who discharges from the relief valve from spouting the one-level cell that is located its top, and on the other hand, if thermal runaway violently arouses catching fire, fire prevention felt 8 also can protect top one-level cell can not suffer the flame ignition.
In order to further enhance the heat insulation and explosion prevention capability of the lithium battery module, a heat insulation belt 91, an explosion prevention valve 92 and a battery management system 200 are introduced, wherein the heat insulation belt 91 is arranged on the outer wall of the module side plates 130; the explosion-proof valve 92 is arranged on the module cover plate 120; the battery management system 200 is located in the module case, and the battery management system 200 is used for detecting the air pressure in the module case. Battery management system 200 can not only be used for detecting the atmospheric pressure in the module shell, can also carry out real time monitoring to the electric core voltage and the temperature in the lithium cell module. Further, the battery management system 200 may be provided with an air pressure sensor, which detects whether the explosion-proof valve is actuated or not and whether thermal runaway occurs by detecting a change in air pressure in the battery module, and provides an alarm signal to the upper computer through the battery management system 200.
Further, the heat insulating tape 91 may be disposed on the outer walls of the plurality of module side plates 130 in a winding and wrapping manner, the heat insulating tape 91 may be made of a mica composite material, the base material may be a phlogopite paper or a muscovite paper, and the heat insulating tape 91 may be made of an alkali-free glass fiber cloth or a film for electricians as a reinforcing material and bonded with an organic silicon resin according to actual requirements, and further, the thickness of the heat insulating tape 91 is 0.1mm to 0.3 mm.
When thermal runaway takes place, first electric core 10 discharge gas, when thermal runaway combustible gas accumulation leads to battery module internal gas pressure to rise sharply, explosion-proof valve 92 action, and exhaust prevents this lithium battery module from exploding.
In order to further prevent this lithium battery module burning, introduce extinguishing device 93, extinguishing device 93 includes extinguishing container 931 and heat initiator 932, and extinguishing container 931 sets up in the inboard of module apron 120, and the inside of extinguishing container 931 is equipped with the material chamber that is used for holding the medicament of putting out a fire, and the one end and the extinguishing container 931 of heat initiator 932 are connected, and the other end of heat initiator 932 contacts with the temperature sensing portion 541 of all fourth lateral walls 54.
The fire extinguishing apparatus detects a fire through the thermal initiator 932, and the fire extinguishing agent in the fire extinguishing container 932 is ignited and then sprays the fire extinguishing substance in a pulse mode to fill the battery module. The container 931 of putting out a fire sets up in the inboard of module apron 120, and the inside of the container 931 of putting out a fire is equipped with the material chamber that is used for the holding medicament of putting out a fire, but material chamber splendid attire aerosol medicament of putting out a fire, specifically can be S type aerosol also can be K type aerosol. The heat initiator 932 may be disposed in an S-shape, one end of the heat initiator 932 is connected to the fire extinguishing container 931, and the other end of the heat initiator 932 is in contact with the temperature sensing portions 541 of all the fourth sidewalls 54.
The thermal initiator 932 may be ignited by high temperatures of 165 c to 185 c or by direct flame action. In the single battery case 5, only the fourth side wall 54 where the temperature sensing part 541 is located is not provided with a heat insulating wall, and the temperature is the highest, which easily causes the heat initiator 932 to operate.
At this moment, this lithium battery module is through having at a plurality of level designs such as electric core, battery cell, battery module, battery management system insulating, soaking, thermal-insulated and fire-retardant blast proof safety measure, when taking less installation space and weight, the safety in utilization of strict guarantee lithium battery module. Also can effectively put out a fire rapidly when the inside fire of lithium battery module, further ensure lithium battery module's safety in utilization.
In order to enhance the insulating property of the first battery cell 10, an insulating film is disposed on the outer surface of the first battery cell 10. The insulating film can be coated on the first battery cell 10 in a thermal shrinkage or gluing mode, the insulating film can be made of PI, PET or PP, the PI material is preferred, and the thickness is 0.03 mm-0.1 mm.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art can change or modify the technical content disclosed above into an equivalent embodiment with equivalent changes, but all those simple modifications, equivalent changes and modifications made to the above embodiment without departing from the spirit of the present invention still belong to the protection scope of the present invention.
Claims (10)
1. The lithium battery module comprises a plurality of single batteries (100), and is characterized in that each single battery (100) comprises a plurality of battery cell units, and each battery cell unit comprises a first battery cell group (1), a second battery cell group (2), a heat insulation device (3) and a soaking device (4);
the first electric core group (1) is provided with a first side part, one side of the second electric core group (2) facing the first side part is a second side part, the first side part and the second side part correspond in position, the heat insulation device (3) comprises a central heat insulation wall (30), and the central heat insulation wall (30) is arranged between the first side part and the second side part;
the first electric core group (1) comprises a plurality of first electric cores (10), the soaking device (4) is arranged between the adjacent first electric cores (10), the soaking device (4) comprises a first soaking film (41), a second soaking film (42) and a heat insulation film (43), and the heat insulation film (43) is connected between the first soaking film (41) and the second soaking film (42).
2. The lithium battery module as recited in claim 1, wherein the cell units further comprise a third cell group, a side facing away from the second side in the second cell group (2) is a fourth side, a side facing the fourth side in the third cell group is a seventh side, the fourth side corresponds to the seventh side, and the central insulating wall (30) is disposed between the fourth side and the seventh side.
3. The lithium battery module as claimed in claim 1, characterized by comprising an insulating wall (6) and a single battery case (5) for mounting a single battery cell, wherein the single battery case (5) comprises a first side wall (51), a second side wall (52), a third side wall (53) and a fourth side wall (54), the first side wall (51), the second side wall (52), the third side wall (53) and the fourth side wall (54) form a battery cell mounting cavity, the first side wall (51) and the second side wall (52) are arranged oppositely, and the third side wall (53) and the fourth side wall (54) are arranged oppositely;
the heat insulation device (3) further comprises a first heat insulation wall (31), a second heat insulation wall (32) and a third heat insulation wall (33);
the side of the first electric core group (1) departing from the first side is a third side, the third side corresponds to the position of the first side wall (51), and the first heat insulation wall (31) is arranged between the third side and the first side wall (51);
the side of the second electric core group (2) departing from the second side is a fourth side, the fourth side corresponds to the position of the second side wall (52), and the second heat insulation wall (32) is arranged between the fourth side and the second side wall (52);
one end of the first electric core group (1) and the second electric core group (2) facing the third side wall (53) is a fifth side part, the fifth side part corresponds to the third side wall (53), and the third heat insulation wall (33) is arranged between the fifth side part and the third side wall (53);
one end of the first electric core group (1) and the second electric core group (2) departing from the fifth side part is a sixth side part, the sixth side part corresponds to the fourth side wall (54), the insulating wall (6) is arranged between the sixth side part and the fourth side wall (54), and a temperature sensing part (541) is arranged on the fourth side wall (54).
4. The lithium battery module as claimed in claim 3, wherein the heat insulation device (3) further comprises a fourth heat insulation wall (34) and a fifth heat insulation wall (35), the fourth heat insulation wall (34) is disposed at the bottom of the first electric core group (1) and the second electric core group (2), the fifth heat insulation wall (35) is disposed at the top of the first electric core group (1) and the second electric core group (2), and the fifth heat insulation wall (35) is provided with a working hole (350).
5. A lithium battery module as claimed in claim 4, characterized by comprising an insulating cover (7), the insulating cover (7) being connected to the top of the fifth insulating wall (35).
6. A lithium battery module as claimed in claim 5, characterized by comprising a fire-protection felt (8), which fire-protection felt (8) is arranged on top of the insulating cover (7).
7. The lithium battery module as recited in claim 6, further comprising a module shell, wherein the module shell comprises a module bottom plate (110), a module cover plate (120) and a plurality of module side plates (130), the module bottom plate (110), the module cover plate (120) and the plurality of module side plates (130) surround to form a single battery assembly cavity, the battery cell units connected with the heat insulation device (3), the soaking device (4), the single battery shell (5), the insulation wall (6), the insulation cover (7) and the fire-proof felt (8) form a plurality of single batteries, and the single batteries are sequentially installed in the single battery assembly cavity along the height direction of the module shell.
8. The lithium battery module as claimed in claim 7, comprising a heat insulating tape (91), an explosion-proof valve (92) and a battery management system (200), the heat insulating tape (91) being disposed on an outer wall of the plurality of module side plates (130); the explosion-proof valve (92) is arranged on the module cover plate (120); the battery management system (200) is located in the module shell, and the battery management system (200) is used for detecting air pressure in the module shell.
9. The lithium battery module as claimed in claim 8, further comprising a fire extinguishing device (93), wherein the fire extinguishing device (93) comprises a fire extinguishing container (931) and a heat initiator (932), the fire extinguishing container (931) is disposed inside the module cover plate (120), a material cavity for containing a fire extinguishing agent is disposed inside the fire extinguishing container (931), one end of the heat initiator (932) is connected with the fire extinguishing container (931), and the other end of the heat initiator (932) is in contact with the temperature sensing portions (541) of all the fourth side walls (54).
10. The lithium battery module as claimed in any of claims 1 to 9, characterized in that the outer surface of the first electrical core (10) is provided with an insulating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122188180.9U CN215644726U (en) | 2021-09-10 | 2021-09-10 | Lithium battery module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122188180.9U CN215644726U (en) | 2021-09-10 | 2021-09-10 | Lithium battery module |
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| CN215644726U true CN215644726U (en) | 2022-01-25 |
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| CN202122188180.9U Active CN215644726U (en) | 2021-09-10 | 2021-09-10 | Lithium battery module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4246683A1 (en) * | 2022-03-14 | 2023-09-20 | SK On Co., Ltd. | End plate assembly including thermistor, battery module and battery pack including the same |
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2021
- 2021-09-10 CN CN202122188180.9U patent/CN215644726U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4246683A1 (en) * | 2022-03-14 | 2023-09-20 | SK On Co., Ltd. | End plate assembly including thermistor, battery module and battery pack including the same |
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Address after: No. 519 Sanjiang Avenue, Mianyang Economic Development Zone, Sichuan 621000 Patentee after: Sichuan Changhong Power Supply Co.,Ltd. Country or region after: China Address before: No. 519 Sanjiang Avenue, Mianyang Economic Development Zone, Sichuan 621000 Patentee before: SICHUAN CHANGHONG BATTERY Co.,Ltd. Country or region before: China |