CN214428739U - Thermal runaway prevention assembly and battery module - Google Patents
Thermal runaway prevention assembly and battery module Download PDFInfo
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- CN214428739U CN214428739U CN202023313171.XU CN202023313171U CN214428739U CN 214428739 U CN214428739 U CN 214428739U CN 202023313171 U CN202023313171 U CN 202023313171U CN 214428739 U CN214428739 U CN 214428739U
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- 230000001681 protective effect Effects 0.000 claims abstract description 114
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- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
-
- 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
- H01M50/383—Flame arresting or ignition-preventing means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model belongs to the technical field of battery production and manufacture, in particular to a thermal runaway prevention component, which comprises a fireproof plate; the wiring harness plate is arranged below the fireproof plate; wherein, the PLASTIC LAMINATED is provided with the weak portion of a plurality of, the pencil board is provided with a plurality of through-hole, the weak portion with the through-hole all corresponds with the explosion-proof valve of battery, the weak portion is provided with first protective wall, the through-hole is provided with the second protective wall, the weak portion breaks under the settlement condition, first protective wall with the second protective wall forms fire prevention passageway. The utility model discloses can form the firewall passageway, high-low pressure device and high temperature material and flame in the isolated module reduce the probability of electric core thermal diffusion in the module.
Description
Technical Field
The utility model belongs to the technical field of battery production manufacturing, concretely relates to subassembly and battery module that thermal runaway is prevented.
Background
Nowadays, green, high-efficiency secondary batteries are vigorously developed in various countries. The lithium ion battery as a novel secondary battery has the advantages of large energy density and power density, high working voltage, light weight, small volume, long cycle life, good safety, environmental protection and the like, and has wide application prospect in the aspects of portable electric appliances, electric tools, large-scale energy storage, electric traffic power supplies and the like. With the launch of new national standards of power batteries 2020, more and more battery manufacturers begin to take thermal runaway protection as the key point of safety consideration of power batteries, but in the current thermal runaway, the thermal insulation between a battery core and a module and the thermal protection of an upper cover of a battery pack are mostly considered, and the protection of high-temperature conductive substances flushed out of an explosion-proof valve is rarely considered.
When the battery takes place thermal runaway, a large amount of metal powder, electrolyte and other high temperature material are sprayed and are scattered to the surface of module after, under this condition, thereby the plastics upper cover of module is very easily worn and is leaded to high voltage circuit to expose in the box environment, is produced very easily behind the conducting material intercommunication and draws the arc short circuit phenomenon, causes secondary thermal runaway, finally leads to the unable thermal spread emergence that blocks.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model lies in: to prior art's not enough, provide a subassembly that prevents thermal runaway, can form the firewall passageway, isolated high-low pressure device and high temperature material and flame in the module reduce the probability of electric core thermal diffusion in the module.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an assembly for preventing thermal runaway comprising a fire retardant panel; the wiring harness plate is arranged below the fireproof plate; wherein, the PLASTIC LAMINATED is provided with the weak portion of a plurality of, the pencil board is provided with a plurality of through-hole, the weak portion with the through-hole all corresponds with the explosion-proof valve of battery, the weak portion is provided with first protective wall, the through-hole is provided with the second protective wall, the weak portion breaks under the settlement condition, first protective wall with the second protective wall forms fire prevention passageway.
Preferably, the weakened portion has a thickness less than the thickness of the remainder of the fire retardant panel, the weakened portion ruptures under a set pressure, and the difference in thickness between the weakened portion and the fire retardant panel is less than 10 mm.
Preferably, the first protection wall is disposed on a lower surface of the fire protection plate, the first protection wall is disposed around the weak portion, the second protection wall is disposed on an upper surface of the wiring harness plate, the second protection wall is disposed around the through hole, and the first protection wall and the second protection wall are fixedly connected with each other in a manner of at least one of: sleeving, clamping and bonding.
Preferably, the first protective wall extends downwards, the second protective wall extends upwards, and a tubular space is formed between the first protective wall and the second protective wall.
Preferably, the outer contour of the first protection wall and the outer contour of the through hole are both larger than the outer contour of the explosion-proof valve.
Preferably, the first protective wall has a profile smaller than a profile of the second protective wall, the first protective wall being nested in the second protective wall.
Preferably, the plurality of weak portions and the plurality of through holes are arranged in sequence along the length direction.
A second object of the present invention is to provide a battery module, which comprises a plurality of batteries, wherein each battery is provided with an explosion-proof valve, and a bus bar is installed between two adjacent batteries, and the bus bar is connected to a pole of the battery; the end plates and the side plates form a frame for accommodating a plurality of batteries in a surrounding manner; according to the assembly for preventing thermal runaway, the wiring harness plate is provided with the mounting groove matched with the bus bar, and the edge of the wiring harness plate is provided with the baffle plate used for limiting the bus bar.
Preferably, the battery module further comprises a collection plate, the busbar is electrically connected with the collection plate, and the collection plate is of an integrated or split structure.
Preferably, a plurality of batteries are sequentially arranged along the length direction, and a heat insulation pad is arranged between the large surfaces of two adjacent batteries.
The utility model has the advantages that the utility model comprises a fireproof plate; the wiring harness plate is arranged below the fireproof plate; wherein, the PLASTIC LAMINATED is provided with the weak portion of a plurality of, the pencil board is provided with a plurality of through-hole, the weak portion with the through-hole all corresponds with the explosion-proof valve of battery, the weak portion is provided with first protective wall, the through-hole is provided with the second protective wall, the weak portion breaks under the settlement condition, first protective wall with the second protective wall forms fire prevention passageway. Because a large amount of metal powder, electrolyte and other high-temperature substances are sprayed and then scattered to the surface of the module when the battery is in thermal runaway, under the condition, the plastic upper cover of the module is easily melted through to cause that a high-voltage circuit is exposed in the box body environment, and the arc-drawing short circuit phenomenon is easily generated after the module is communicated by conductive substances to cause secondary thermal runaway and finally cause that the heat which can not be blocked spreads, therefore, the fireproof plate is provided with a plurality of weak parts, the wiring harness plate is provided with a plurality of through holes, the weak parts and the through holes are in one-to-one correspondence with the explosion-proof valves of the battery, the weak parts can be broken when the internal pressure of the battery is higher before the battery is abnormal or is in thermal runaway, so that the internal pressure of the battery is sharply reduced, meanwhile, the metal powder, the electrolyte and other high-temperature substances of the explosion-proof valves can impact the weak parts, and the weak parts absorb part of impact energy, the other parts of the fireproof plate cannot be damaged by impact, in addition, the first protective wall and the second protective wall form a fireproof channel, so that high-temperature substances or flames cannot splash to parts on the wiring harness plate, the short circuit arc and flame erosion are prevented, and the situation that other electric cores are out of control of heat is caused, wherein the first protective wall and the second protective wall are made of high-temperature fireproof materials, the flame sprayed at high temperature cannot be melted through, the high-temperature flame sprayed on the wiring harness plate is protected, the probability of exposure of the parts is reduced, the high-temperature flame sprayed by the explosion-proof valve and conductive substances can be conducted to the outside of the battery module through the protective walls, the fireproof plate is made of a thin plate made of fireproof stone, the high-temperature substances can be prevented from melting through the fireproof plate, even if the weak part is broken through, the flame and the parts on the wiring harness plate can be blocked, and the flame is dispersed in a basin shape when contacting the fireproof plate after being diffused all around, the high-temperature barrier is formed between the flame and the parts on the wiring harness plate, so that the internal parts are prevented from being corroded by high temperature, the influence of the flame and high-temperature substances on the battery module is reduced, and the safety of the battery module is improved. The utility model discloses can form the firewall passageway, high temperature when making electric core thermal runaway erupts flame and material and heat conduction to the box from the passageway inside, and high-low pressure device and high temperature material and flame in the isolated module reduce the probability of electric core thermal diffusion in the module.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the first embodiment of the present invention after decomposition.
Fig. 3 is an exploded side view of a first embodiment of the present invention.
Fig. 4 is an exploded bottom view of the first embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of a fire protection plate according to a first embodiment of the present invention.
Fig. 6 is a schematic structural view of a fourth embodiment of the present invention.
Fig. 7 is a schematic cross-sectional view of a fourth embodiment of the present invention.
Fig. 8 is an exploded view of a fifth embodiment of the present invention.
Fig. 9 is a schematic view of a plurality of batteries according to a sixth embodiment of the present invention.
Fig. 10 is an exploded view of a plurality of batteries according to a sixth embodiment of the present invention.
Wherein the reference numerals are as follows:
1-fire-proof plate; 11-a weakening; 111-a first protective wall;
2-a wiring harness board; 20-a through hole; 21-mounting grooves; 22-a baffle; 201-a second protective wall;
3-a battery; 31-an explosion-proof valve; a 32-pole column;
4-a busbar;
5-end plate;
6-side plate;
7-collecting plate;
8-a heat insulation pad;
x-length direction.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
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.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to fig. 1 to 10, but the present invention is not limited thereto.
Implementation mode one
An assembly for protection against thermal runaway comprising a fire protection plate 1; the wiring harness plate 2 is arranged below the fireproof plate 1; wherein, the fireproof plate 1 is provided with a plurality of weak portions 11, the wire harness plate 2 is provided with a plurality of through holes 20, the weak portions 11 and the through holes 20 both correspond to the explosion-proof valve 31 of the battery 3, the weak portions 11 are provided with first protective walls 111, the through holes 20 are provided with second protective walls 201, the weak portions 11 are broken under a set condition, and the first protective walls 111 and the second protective walls 201 form a fireproof passage.
Because a large amount of metal powder, electrolyte and other high-temperature substances are sprayed and then scattered to the surface of the module when the battery is in thermal runaway, under the condition, the plastic upper cover of the module is easily melted through, so that a high-voltage circuit is exposed in the box environment, an arc-drawing short circuit phenomenon is easily generated after the module is communicated by a conductive substance, secondary thermal runaway is caused, and finally the heat spreading which cannot be blocked is caused, therefore, as shown in the figures 1 to 5, a plurality of weak parts 11 are arranged on a fireproof plate 1, a plurality of through holes 20 are arranged on a wiring harness plate 2, the weak parts 11 and the through holes 20 are in one-to-one correspondence with the explosion-proof valves 31 of the battery 3, so that the weak parts 11 are broken when the internal pressure of the battery is high before the battery is abnormal or the thermal runaway, the internal pressure of the battery is rapidly reduced, and simultaneously, the metal powder, the electrolyte and other high-temperature substances of the explosion-proof valves can also impact the weak parts 11, the weak part 11 absorbs part of impact energy, and other parts of the fire-proof plate 1 are not damaged by impact, in addition, the first protective wall 111 and the second protective wall 201 form a fire-proof channel to ensure that high-temperature substances or flames do not splash to parts on the wire harness plate 2, so as to prevent short circuit arcing and flame erosion, and cause thermal runaway of other cells, wherein the first protective wall 111 and the second protective wall 201 are made of high-temperature fire-resistant fire-proof materials, and the flame sprayed at high temperature cannot be melted through, so that the function of protecting the parts on the wire harness plate 2 is achieved, the probability of exposure of the parts is reduced, the high-temperature flame sprayed by the explosion-proof valve 31 and conductive substances can be conducted to the outside of the battery module through the protective walls, the fire-proof plate 1 is made of thin plates made of fire-proof stone materials, the high-temperature substances can be prevented from melting through the fire-proof plate 1, and even if the weak part 11 is broken, the flame and the parts on the wire harness plate 2 can be blocked, make flame to diffusion back all around, be the basin form when contacting PLASTIC LAMINATED 1 and scatter, form the one deck barrier of putting the high temperature promptly between spare part on flame and wiring board 2, prevent that internals from being corroded by high temperature, reduce the influence of flame and high temperature material to battery module, help improving the security of battery module.
In the assembly for preventing thermal runaway according to the present invention, as shown in fig. 5, the thickness of the weak portion 11 is smaller than that of the other portions of the fire prevention plate 1, and the weak portion 11 is broken at a set pressure. Specifically, when the material of weak part 11 is the same with the material of PLASTIC LAMINATED 1, can be less than the thickness of other parts of PLASTIC LAMINATED 1 with the thickness of weak part 11 for weak part 11 breaks under the settlement pressure, reaches the effect of pressure release and release high temperature flame and high temperature material, and when the material of weak part 11 was inequality with the material of PLASTIC LAMINATED 1, the tensile strength of weak part 11 was less than the tensile strength of other parts of outer PLASTIC LAMINATED 1, it can to satisfy that weak part 11 breaks under the settlement pressure.
In the assembly according to the present invention for preventing thermal runaway, the difference in thickness between the weak portion 11 and the fire shield 1 is less than 10 mm. The difference in thickness between the weak portion 11 and the fire prevention plate 1 is defined to prevent the weak portion 11 from being broken by the impact of a set pressure or a high-temperature substance due to an excessive difference in thickness therebetween, and also to prevent the fire prevention plate 1 from being excessively thick to increase the production cost of the battery.
In the assembly for preventing thermal runaway according to the present invention, as shown in fig. 4, the first protective wall 111 is provided on the lower surface of the fire prevention plate 2, the first protective wall 111 is provided around the weak portion 11, the second protective wall 201 is provided on the upper surface of the fire prevention plate 2, and the second protective wall 201 is provided around the through hole 20. Specifically, the first protective wall 111 is arranged around the weak portion 11, and the second protective wall 201 is arranged around the through hole 20, so that when thermal runaway occurs in the battery cell, the first protective wall 111 and the second protective wall 201 can bear high temperature, and the function of surrounding the periphery of flame is achieved, so that the flame is limited in the protective walls, and the flame is prevented from overflowing from the fireproof channel to other parts of the wire harness board 2.
In the subassembly according to the utility model discloses a prevent thermal runaway, fixed connection between first protective wall 111 and the second protective wall 201, fixed connection is for cup jointing, and the profile of first protective wall 111 is less than the profile of second protective wall 201, and first protective wall 111 embolias second protective wall 201. In the present embodiment, the contour of the first protection wall 111 is smaller than the contour of the second protection wall 201, so that the first protection wall 111 can be easily inserted into the second protection wall 201, the second protection wall 201 surrounds the periphery of the first protection wall 111, which is equivalent to increasing the thickness of the whole protection wall, however, the present invention is not limited thereto, the contour of the first protective wall 111 can be larger than the contour of the second protective wall 201, the second protective wall 201 is sleeved into the first protective wall 111, so as to satisfy the sleeve connection between the first protective wall 111 and the second protective wall 201, and at the same time, a buckle portion and/or a click portion is provided in at least one of the first protective wall 111 and the second protective wall 201, after the first protective wall 111 and the second protective wall 201 are sleeved, the corresponding positions of the first protective wall 111 and the second protective wall 201 are clamped, so that the stability and the sealing performance of the protective walls are improved, and the safety of the battery is improved.
The utility model discloses a theory of operation is:
the fireproof plate 1 is provided with a plurality of weak parts 11, the wiring harness plate 2 is provided with a plurality of through holes 20, the weak parts 11 and the through holes 20 are in one-to-one correspondence with the explosion-proof valves 31 of the batteries 3, when the internal pressure of the batteries is high before the batteries are abnormal or thermal runaway, the weak parts 11 are broken, the internal pressure of the batteries is reduced rapidly, meanwhile, metal powder, electrolyte and other high-temperature substances of the explosion-proof valves can impact the weak parts 11, the weak parts 11 absorb part of impact energy, and other parts of the fireproof plate 1 cannot be damaged by impact, in addition, the first protective wall 111 and the second protective wall 201 form a fireproof channel, the high-temperature substances or flames are ensured not to splash to parts on the wiring harness plate 2, the short circuit arc and the erosion of the flames are prevented, and the thermal runaway of other electric cores is prevented, wherein the first protective wall 111 and the second protective wall 201 are made of high-temperature fireproof materials, the flame that high temperature sprays can't melt and wear, not only play the effect of spare part on the protection wiring board 2, reduce the probability that spare part takes place to expose, can also dredge the battery module outside through the high temperature flame and the conducting substance of blast proof valve 31 spun through the protection wall, fire prevention board 1 adopts the sheet metal that fire prevention stone material made, can prevent that high temperature material from melting and wearing fire prevention board 1, even the weak part 11 is broken by the dashing back, also can separate flame and wiring board 2 and go up spare part, make flame to spread the back all around, be the basin form and scatter when contacting fire prevention board 1, form the one deck barrier of putting the high temperature between flame and wiring board 2 spare part promptly, prevent that the internals is corroded by high temperature, reduce the influence of flame and high temperature substance to battery module, help improving the security of battery module.
Second embodiment
The difference from the first embodiment is that: in the present embodiment, the first protection wall 111 and the second protection wall 201 are fixedly connected in a snap-fit manner, the first protection wall 111 extends downward, the second protection wall 201 extends upward, a tubular space is formed between the first protection wall 111 and the second protection wall 201, and both the outer contour of the first protection wall 111 and the outer contour of the through hole 20 are larger than the outer contour of the explosion-proof valve 31. In this embodiment, the first protective wall 111 and the second protective wall 201 are fixedly connected by clamping, and at least one of the first protective wall 111 and the second protective wall 201 is provided with a buckle portion and/or a clamping portion, but the present invention is not limited thereto, and after the first protective wall 111 and the second protective wall 201 are sleeved, the corresponding positions of the first protective wall 111 and the second protective wall 201 are clamped, which is helpful for improving the stability and the sealing performance of the protective walls, thereby improving the safety of the battery; the first protective wall 111 extends downwards, the second protective wall 201 extends upwards, the distance between the first protective wall 111 and the second protective wall 201 can be reduced, the gap between the first protective wall 111 and the second protective wall 201 can be reduced, the first protective wall 111 and the second protective wall 201 can bear high temperature, the function of surrounding the periphery of flame is achieved, the flame is limited in the protective walls, and the flame is prevented from overflowing to other parts of the wiring harness board 2 from the fireproof channel; specifically, the outer contour of the first protection wall 111 and the outer contour of the through hole 20 are generally groove-shaped or circular thin walls, which are larger than the outer contour of the explosion-proof valve 31, so that the explosion-proof valve 31 can be opened smoothly, and the situation that the explosion-proof valve 31 is blocked is avoided.
Other structures are the same as those of the first embodiment, and are not described herein again.
Third embodiment
The difference from the first embodiment is that: in the present embodiment, the first protection wall 111 and the second protection wall 201 are fixedly connected by bonding, and the plurality of weak portions 11 and the plurality of through holes 20 are all arranged in sequence along the length direction X. In the present embodiment, the first protective wall 111 and the second protective wall 201 are fixedly connected by adhesion, that is, the adhesive is pasted on the connection surface of the first protective wall 111 and the second protective wall 201, but the present invention is not limited thereto, and the first protective wall 111 and the second protective wall 201 can be sleeved first, the first protective wall 111 and the second protective wall 201 are bonded at corresponding positions, which helps to improve the stability and sealing property of the protective walls, thereby improving the safety of the battery, the plurality of weak portions 11 and the plurality of through holes 20 are sequentially arranged along the length direction X, corresponding to the explosion-proof valves 31 of a plurality of batteries 3 arranged in sequence along the length direction X, but the utility model is not limited to this, depending on the position of the explosion-proof valve 31 of the actual battery 3, the positions of the weak portion 11 and the through hole 20 may be increased so that the weak portion 11 and the through hole 20 correspond to the explosion-proof valve 31.
Other structures are the same as those of the first embodiment, and are not described herein again.
Embodiment IV
A battery module comprises a plurality of batteries 3, an explosion-proof valve 31 is arranged on each battery 3, a bus bar 4 is arranged between every two adjacent batteries 3, and the bus bar 4 is connected with a pole 32 of each battery 3; the end plates 5 and the side plates 6 enclose a frame for accommodating a plurality of batteries 3; according to the assembly for preventing thermal runaway of the first embodiment, the wiring harness plate 2 is provided with the installation groove 21 matched with the bus bar 4, and the edge of the wiring harness plate 2 is provided with the baffle plate 22 for limiting the bus bar 4.
It should be noted that: referring to fig. 6 and 7, the bus bar 4 is connected to the poles 32 of the batteries 3, so that the batteries 3 can be connected to each other to form a circuit, and a series connection or a parallel connection is realized, the wiring harness board 2 is provided with an installation groove 21, the bus bar 4 is installed in the installation groove 21, the surface of the bus bar 4 is provided with a bending part, specifically, the middle part of the bus bar 4 is provided with a bending part, and the bending part is matched with the installation groove 21 to limit the position of the bus bar 4 on the wiring harness board 2, meanwhile, the edge of the wiring harness board 2 is provided with the baffle 22, so that the bus bar 4 can be limited, and the probability of displacement or shaking of the bus bar 4 is reduced.
Fifth embodiment
A battery module comprises a plurality of batteries 3, an explosion-proof valve 31 is arranged on each battery 3, a bus bar 4 is arranged between every two adjacent batteries 3, and the bus bar 4 is connected with a pole 32 of each battery 3; the end plates 5 and the side plates 6 enclose a frame for accommodating a plurality of batteries 3; in the assembly for preventing thermal runaway according to the second embodiment, the wire harness plate 2 is provided with the mounting groove 21 for fitting with the bus bar 4, and the edge of the wire harness plate 2 is provided with the baffle 22 for limiting the bus bar 4.
It should be noted that: referring to fig. 8, the battery module further includes a collecting plate 7, the bus bar 4 is electrically connected to the collecting plate 7, and the collecting plate 7 is an integrated or split structure. Gather voltage and temperature information on board 7 can gather busbar 4 to feed back to battery management system, in this embodiment, gather 7 split type structures of board, be flexible circuit board, can converge the formula by two integrations, gather 7 accessible multi-sheets of board and carry out the compound mode, but the different batteries of adaptation arrange and busbar 4's structure helps improving the suitability of gathering board 7, also can paste at bundling board 2 through the single face gum.
Sixth embodiment
A battery module comprises a plurality of batteries 3, an explosion-proof valve 31 is arranged on each battery 3, a bus bar 4 is arranged between every two adjacent batteries 3, and the bus bar 4 is connected with a pole 32 of each battery 3; the end plates 5 and the side plates 6 enclose a frame for accommodating a plurality of batteries 3; as in the thermal runaway prevention assembly of the third embodiment, the wire harness plate 2 is provided with a mounting groove 21 that is fitted to the bus bar 4, and the edge of the wire harness plate 2 is provided with a stopper 22 for limiting the bus bar 4.
It should be noted that: referring to fig. 9 and 10, a plurality of batteries 3 are arranged in sequence in the longitudinal direction X, and a heat insulating mat 8 is provided between the large surfaces of two adjacent batteries 3. Specifically, heat insulating mattress 8 is the silica gel heat insulating mattress, sets up between electric core big face, and inside has the material that coefficient of heat conductivity is extremely low, like aerogel, super cotton etc. can reduce a large amount of heats of battery that thermal runaway and pass through in the adjacent battery 3 of shell direct access, prevents shell and external component's heat transfer, plays the transfer rate when delaying module thermal runaway.
Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. An assembly for preventing thermal runaway, comprising:
a fire protection plate (1);
the wiring harness plate (2) is arranged below the fireproof plate (1);
wherein, PLASTIC LAMINATED (1) is provided with a plurality of weak point (11), pencil board (2) are provided with a plurality of through-hole (20), weak point (11) with through-hole (20) all correspond with explosion-proof valve (31) of battery (3), weak point (11) are provided with first protective wall (111), through-hole (20) are provided with second protective wall (201), weak point (11) break under the settlement condition, first protective wall (111) with second protective wall (201) form the fire prevention passageway.
2. The thermal runaway prevention assembly of claim 1, wherein: the thickness of the weak part (11) is smaller than that of other parts of the fireproof plate (1), the weak part (11) is broken under a set pressure, and the thickness difference between the weak part (11) and the fireproof plate (1) is smaller than 10 mm.
3. The thermal runaway prevention assembly of claim 1, wherein: the first protective wall (111) is arranged on the lower surface of the fireproof plate (1), the first protective wall (111) is arranged around the weak portion (11), the second protective wall (201) is arranged on the upper surface of the wiring harness plate (2), the second protective wall (201) is arranged around the through hole (20), and the first protective wall (111) and the second protective wall (201) are fixedly connected in a mode that at least one of the following modes is adopted: sleeving, clamping and bonding.
4. A thermal runaway prevention assembly as recited in claim 3, wherein: the first protective wall (111) extends downwards, the second protective wall (201) extends upwards, and a tubular space is formed between the first protective wall (111) and the second protective wall (201).
5. A thermal runaway prevention assembly as recited in claim 3, wherein: the outer contour of the first protective wall (111) and the outer contour of the through hole (20) are both larger than the outer contour of the explosion-proof valve (31).
6. A thermal runaway prevention assembly as recited in claim 3, wherein: the first protective wall (111) has a profile that is smaller than the profile of the second protective wall (201), the first protective wall (111) being nested in the second protective wall (201).
7. The thermal runaway prevention assembly of claim 1, wherein: the plurality of weak portions (11) and the plurality of through holes (20) are sequentially arranged along the length direction (X).
8. A battery module, comprising:
the explosion-proof device comprises a plurality of batteries (3), wherein each battery (3) is provided with an explosion-proof valve (31), a bus bar (4) is arranged between every two adjacent batteries (3), and the bus bars (4) are connected to poles (32) of the batteries (3);
the end plates (5) and the side plates (6) enclose a frame for accommodating a plurality of batteries (3);
the assembly for preventing thermal runaway according to any one of claims 1 to 7, wherein a wiring harness plate (2) is provided with a mounting groove (21) which is matched with the busbar (4), and the edge of the wiring harness plate (2) is provided with a baffle plate (22) for limiting the busbar (4).
9. The battery module according to claim 8, wherein: the battery module further comprises a collection plate (7), the busbar (4) is electrically connected with the collection plate (7), and the collection plate (7) is of an integrated or split structure.
10. The battery module according to claim 8, wherein: a plurality of batteries (3) are arranged in sequence along the length direction (X), and a heat insulation pad (8) is arranged between the large surfaces of two adjacent batteries (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023313171.XU CN214428739U (en) | 2020-12-31 | 2020-12-31 | Thermal runaway prevention assembly and battery module |
| PCT/CN2021/093838 WO2022142069A1 (en) | 2020-12-31 | 2021-05-14 | Assembly having anti-thermal runaway function and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023313171.XU CN214428739U (en) | 2020-12-31 | 2020-12-31 | Thermal runaway prevention assembly and battery module |
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| Publication Number | Publication Date |
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| CN214428739U true CN214428739U (en) | 2021-10-19 |
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| CN202023313171.XU Active CN214428739U (en) | 2020-12-31 | 2020-12-31 | Thermal runaway prevention assembly and battery module |
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| Country | Link |
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| CN (1) | CN214428739U (en) |
| WO (1) | WO2022142069A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114843697A (en) * | 2022-07-04 | 2022-08-02 | 广东采日能源科技有限公司 | Battery module |
| CN116031537A (en) * | 2023-03-24 | 2023-04-28 | 中创新航科技集团股份有限公司 | Battery pack |
| WO2024016269A1 (en) * | 2022-07-21 | 2024-01-25 | 宁德时代新能源科技股份有限公司 | Battery and electrical device |
| EP4197053B1 (en) * | 2021-11-05 | 2024-05-01 | Ruoff Work & Life GmbH & Co. KG | Charging method, fire-protection device and charging station for an electric vehicle |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114976471B (en) * | 2022-07-28 | 2022-09-30 | 广东采日能源科技有限公司 | Energy storage battery box |
| CN114976470B (en) * | 2022-07-28 | 2022-10-21 | 广东采日能源科技有限公司 | Energy storage battery box |
| CN115832604A (en) * | 2022-08-12 | 2023-03-21 | 江苏时代新能源科技有限公司 | Battery monomer, battery and consumer |
| CN116761378B (en) * | 2023-08-14 | 2023-11-14 | 苏州维信电子有限公司 | Circuit board structure for new energy battery pack and new energy battery pack |
| CN117117389B (en) * | 2023-10-24 | 2024-01-09 | 山东中卓环保能源科技有限公司 | New energy storage battery module and wire harness plate assembly thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9093726B2 (en) * | 2009-09-12 | 2015-07-28 | Tesla Motors, Inc. | Active thermal runaway mitigation system for use within a battery pack |
| CN111668404A (en) * | 2019-03-07 | 2020-09-15 | 宁德时代新能源科技股份有限公司 | Battery module and battery pack |
| CN111668422A (en) * | 2019-03-08 | 2020-09-15 | 比亚迪股份有限公司 | Battery module, power battery package and vehicle |
| CN110828747A (en) * | 2019-11-15 | 2020-02-21 | 爱驰汽车有限公司 | Thermal protection system for power battery |
| CN111725454B (en) * | 2020-06-12 | 2022-11-22 | 上汽通用汽车有限公司 | Battery module and battery pack assembly |
-
2020
- 2020-12-31 CN CN202023313171.XU patent/CN214428739U/en active Active
-
2021
- 2021-05-14 WO PCT/CN2021/093838 patent/WO2022142069A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4197053B1 (en) * | 2021-11-05 | 2024-05-01 | Ruoff Work & Life GmbH & Co. KG | Charging method, fire-protection device and charging station for an electric vehicle |
| CN114843697A (en) * | 2022-07-04 | 2022-08-02 | 广东采日能源科技有限公司 | Battery module |
| WO2024016269A1 (en) * | 2022-07-21 | 2024-01-25 | 宁德时代新能源科技股份有限公司 | Battery and electrical device |
| CN116031537A (en) * | 2023-03-24 | 2023-04-28 | 中创新航科技集团股份有限公司 | Battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022142069A1 (en) | 2022-07-07 |
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Effective date of registration: 20220130 Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zenergy Battery Technologies Co.,ltd Address before: 210000 No.15, Huashang Road, Airport Economic Development Zone, Jiangning District, Nanjing City, Jiangsu Province Patentee before: Jiangsu Tafel Power System Co.,Ltd. Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. |
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Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli New Energy Battery Technology Co.,Ltd. Country or region after: China Address before: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee before: Jiangsu Zenergy Battery Technologies Co.,ltd Country or region before: China |
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