CN220021482U - Battery and battery pack - Google Patents
Battery and battery pack Download PDFInfo
- Publication number
- CN220021482U CN220021482U CN202321459207.6U CN202321459207U CN220021482U CN 220021482 U CN220021482 U CN 220021482U CN 202321459207 U CN202321459207 U CN 202321459207U CN 220021482 U CN220021482 U CN 220021482U
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- China
- Prior art keywords
- explosion
- battery
- proof valve
- protective film
- chip
- 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.)
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- 230000001681 protective effect Effects 0.000 claims abstract description 70
- 238000009423 ventilation Methods 0.000 claims abstract description 18
- 230000017525 heat dissipation Effects 0.000 claims description 46
- 239000010410 layer Substances 0.000 claims description 34
- 238000012544 monitoring process Methods 0.000 claims description 14
- 239000012790 adhesive layer Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 17
- 238000004880 explosion Methods 0.000 abstract description 15
- 239000003792 electrolyte Substances 0.000 abstract description 12
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000035699 permeability Effects 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 compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method 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
Classifications
-
- 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
- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to the technical field of batteries and discloses a battery and a battery pack, wherein the battery comprises a shell, a cover plate and an explosion-proof valve assembly, a pole group is arranged in the shell, one end of the shell is opened, the cover plate is arranged at the opened end of the shell, and a mounting hole is formed in the cover plate; the explosion-proof valve assembly comprises an explosion-proof valve, a protection sheet and a protection film which are sequentially arranged along the direction away from the pole group; the explosion-proof valve is arranged in the mounting hole, the protection sheet is covered on the mounting hole, and a plurality of ventilation holes are formed in the protection sheet; the protective film is arranged on the protective sheet and at least covers all the ventilation holes, and the protective film is overgas and overliquid. The protection sheet and the protection film can isolate the explosion-proof valve from the outside, when the liquid injection hole is in liquid discharge, the protection film can isolate the electrolyte from the explosion-proof valve, so that the explosion-proof valve is prevented from being corroded due to the fact that the electrolyte is immersed into the explosion-proof valve, the explosion stability of the explosion-proof valve is guaranteed, and the safety performance of a battery is improved. The protective film does not influence the passage of gas, so that the explosion-proof valve can be successfully exploded when reaching the explosion pressure.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery and a battery pack.
Background
The battery comprises a shell, a pole group arranged in the shell and a cover plate arranged at the end part of the shell, wherein a liquid injection hole and an explosion-proof valve are arranged on the cover plate. The liquid injection hole is used for injecting electrolyte into the shell.
At present, the battery cell is injected with liquid, and the explosion-proof valve and the liquid injection hole are arranged on the cover plate, so that electrolyte flows to the explosion-proof valve after liquid injection, and the explosion-proof valve is polluted. Electrolyte immersed in the explosion-proof valve not only influences the appearance of the battery cell, but also causes corrosion of the explosion-proof valve, influences the explosion stability of the explosion-proof valve, and leads to low safety performance of the battery cell.
Disclosure of Invention
In view of the above, the utility model provides a battery and a battery pack, which are used for solving the problems of corrosion of an explosion-proof valve and poor safety of a battery core caused by immersion of electrolyte into the explosion-proof valve.
In a first aspect, the utility model provides a battery, comprising a shell, a cover plate and an explosion-proof valve assembly, wherein a pole group is arranged in the shell, one end of the shell is opened, the cover plate is arranged at the opened end of the shell, and a mounting hole is formed in the cover plate; the explosion-proof valve assembly comprises an explosion-proof valve, a protection sheet and a protection film which are sequentially arranged along the direction away from the pole group; the explosion-proof valve is arranged in the mounting hole, the protection sheet is covered on the mounting hole, and a plurality of ventilation holes are formed in the protection sheet; the protective film is arranged on the protective sheet and at least covers all the ventilation holes, and the protective film is overgas and overliquid.
The beneficial effects are that: the outside of the explosion-proof valve is covered by the protection sheet and the protection film, so that the explosion-proof valve can be isolated from the outside, when the liquid injection hole is in liquid discharge, the protection film and the protection sheet are arranged, and the protection film is out of gas and liquid, so that the electrolyte can be isolated from the explosion-proof valve, and the explosion-proof valve is prevented from being corroded due to the fact that the electrolyte is immersed into the explosion-proof valve, the explosion stability of the explosion-proof valve is guaranteed, and the safety performance of a battery is improved. Because the protective film does not influence the passage of gas, the pressure difference does not exist between the internal pressure and the external pressure of the air holes of the protective sheet, and the air holes on the protective sheet can be used for helium detection of the explosion-proof valve and smooth explosion of the explosion-proof valve when the internal pressure mutation reaches the explosion pressure of the explosion-proof valve.
In an alternative embodiment, the distance between adjacent vent holes is 2.0mm to 3.0mm along the length of the explosion proof valve.
The beneficial effects are that: the distance between the adjacent ventilation holes is controlled within the range, so that the influence of loose distribution among the ventilation holes on the stability of the subsequent attached protective film can be prevented.
In an alternative embodiment, a ring of adhesive layer is provided on the protective film and near the edge of the protective film, and the protective film is adhered to the protective sheet through the adhesive layer.
The beneficial effects are that: therefore, the firm adhesion between the protective film and the protective sheet can be ensured, and the cost can be effectively saved.
In an alternative embodiment, the protective film has a thickness of 0.03mm to 0.05mm.
The beneficial effects are that: the thickness of the protective film is controlled in the range, the thickness of the protective film is too small, the self performance is poor, the protective film is easy to damage, the adhesive bonding connection assembly difficulty between the protective sheets is high, the thickness of the protective film is too large, on one hand, the cost is high, on the other hand, the air permeability is reduced, the internal and external pressure difference of the explosion-proof valve is influenced, and the normal explosion of the explosion-proof valve is influenced.
In an alternative embodiment, the housing includes two oppositely disposed first walls and a second wall connecting the two first walls along a long side of the first walls, the first wall having an area greater than that of the second wall, the second wall being disposed opposite the cover, and a heat dissipation layer being disposed on a surface of any one or more of the two first walls and the second wall.
The beneficial effects are that: when the battery cell works normally, the heat dissipation layer can timely and continuously transfer heat from the battery cell to the battery cell and timely dissipate the heat, so that the battery is cooled, a large amount of heat accumulation is avoided, and the cycle performance and the safety performance of the battery cell are improved.
In an alternative embodiment, the heat sink layer has a thickness of 0.5mm to 1.0mm.
The beneficial effects are that: the heat dissipation layer is controlled in the range, so that good heat dissipation effect can be ensured, the thickness is too small, on the one hand, the forming is difficult, on the other hand, the heat dissipation performance is reduced, and the thickness is too large to occupy the use space of the battery module.
In an alternative embodiment, the heat dissipation layer includes a heat dissipation portion disposed on the first wall, and the heat dissipation portion is provided with a temperature monitoring component.
The beneficial effects are that: through setting up temperature monitoring assembly for the temperature of real-time supervision battery, when the temperature exceeded safe temperature position, can provide the signal for the personnel, in time withdraw, guarantee personal safety. For example, when the battery is applied to an automobile, for example, the battery is internally shorted, the battery can heat and explode, and the temperature monitoring assembly is arranged, so that the battery can be overhigh in temperature and exceeds a safe temperature range, and people can be timely reminded of being powered off and kept away from, so that personal safety is protected.
In an alternative embodiment, the heat dissipation portion is provided with a mounting groove, the temperature monitoring assembly comprises a chip and a plurality of temperature sensors electrically connected with the chip, the chip is arranged in the mounting groove, the temperature sensors are arranged at intervals around the chip, and the temperature sensors are arranged on the outer surface of the heat dissipation portion.
The beneficial effects are that: the temperature of a plurality of electric potentials can be tested to a plurality of temperature sensors to with temperature signal transmission to the chip, the chip can monitor the temperature of battery, in case the temperature surpasses the safe temperature range of settlement, sends alarm signal promptly, reminds personnel outage to keep away from.
In an alternative embodiment, the outer surface of the chip is recessed from the outer surface of the heat sink layer, and the depth of the recess is 0.1mm to 0.2mm.
The beneficial effects are that: the connection stability between the chip and the heat dissipation layer is better, and meanwhile, the chip is not exposed, so that the chip can be protected to a certain extent. If the thickness of the chip is larger than that of the heat dissipation layer, the chip protrudes out of the heat dissipation layer, so that the appearance of the product is damaged, and the use space of the battery module is occupied.
In a second aspect, the utility model also provides a battery pack comprising a plurality of batteries according to any one of the above technical solutions.
Since the battery pack includes the battery, it has the same effect as the battery, and is not described herein.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is an isometric view of a battery according to an embodiment of the utility model;
FIG. 2 is a top view of the battery shown in FIG. 1;
fig. 3 is an axial side view of the battery of fig. 1 with the protective film removed;
FIG. 4 is a top view of the battery shown in FIG. 3;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 6 is an enlarged view of a portion of the explosion proof valve assembly of FIG. 5;
fig. 7 is an isometric view of yet another battery according to an embodiment of the utility model;
FIG. 8 is an isometric view of another battery according to an embodiment of the utility model;
FIG. 9 is an isometric view of the other view of FIG. 8;
fig. 10 is an enlarged view of a portion of the temperature monitoring assembly of fig. 5.
Fig. 11 is an isometric view of a battery pack according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a housing; 101. a first wall; 102. a second wall; 2. a cover plate; 3. an explosion-proof valve assembly; 301. an explosion-proof valve; 302. a protective sheet; 3021. ventilation holes; 303. a protective film; 4. a heat dissipation layer; 401. a heat dissipation part; 5. a temperature monitoring assembly; 501. a chip; 502. a temperature sensor; 6. a pole; 10. a battery; 100. and a battery module.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The existing battery core is provided with the explosion-proof valve on the cover plate, and as the position of the explosion-proof valve is close to the liquid injection hole, when electrolyte is injected into the shell through the liquid injection hole, liquid leakage occurs, and the liquid leakage is immersed in the explosion-proof valve, so that corrosion can be caused to the explosion-proof valve, and the explosion stability of the explosion-proof valve is affected. In order to solve the technical problem, a layer of protection sheet is stuck on the explosion-proof valve in the related art to play a certain role in isolation, but in consideration of not affecting the normal opening of the explosion-proof valve, the protection sheet does not cover the explosion-proof valve completely, but an opening gap is left at the edge, however, the electrolyte and the explosion-proof valve cannot be isolated completely in the opening gap. Accordingly, the present utility model provides a battery 10 for solving the above-described problems.
An embodiment of the present utility model is described below with reference to fig. 1 to 11.
According to a first aspect of the present utility model, there is provided a battery 10, comprising a casing 1, a cover plate 2 and an explosion-proof valve assembly 3, wherein a pole group is arranged in the casing 1, one end of the casing 1 is arranged in an open manner, the cover plate 2 is arranged at the open end of the casing 1, and a mounting hole is arranged on the cover plate 2; the explosion-proof valve assembly 3 includes an explosion-proof valve 301, a protective sheet 302, and a protective film 303 sequentially disposed in a direction away from the pole group; the explosion-proof valve 301 is arranged in the mounting hole, the protection sheet 302 is covered on the mounting hole, and a plurality of ventilation holes 3021 are formed in the protection sheet 302; the protective film 303 is provided on the protective sheet 302 and covers at least all the ventilation holes 3021, and the protective film 303 is too gas-permeable and not liquid-permeable.
The explosion-proof valve 301, the protective sheet 302 and the protective film 303 are sequentially arranged along the direction away from the pole group, namely, the protective sheet 302 is arranged on the outer side of the explosion-proof valve 301, and the protective film 303 is arranged on the outer side of the protective sheet 302. Since the outer side of the explosion-proof valve 301 is covered by the protective sheet 302 and the protective film 303, the explosion-proof valve 301 can be isolated from the outside, when the liquid injection hole is in liquid discharge, the protective film 303 and the protective sheet 302 are arranged, and the protective film 303 is out of gas and liquid, so that electrolyte and the explosion-proof valve 301 can be isolated, and the explosion-proof valve 301 is prevented from being corroded due to the fact that the electrolyte is immersed into the explosion-proof valve 301, so that the explosion stability of the explosion-proof valve 301 is ensured, and the safety performance of the battery 10 is improved. Since the protective film 303 does not affect the passage of gas, there is no pressure difference between the internal and external air pressures of the air holes 3021 of the protective sheet 302, and the air holes 3021 on the protective sheet 302 can be used for helium detection of the explosion-proof valve 301 and smooth explosion when the internal air pressure of the explosion-proof valve 301 suddenly changes to the explosion pressure of the explosion-proof valve 301.
Specifically, referring to fig. 6, the explosion-proof valve 301 is disposed at one end of the mounting hole near the pole group, the protective sheet 302 is disposed at one end of the mounting hole far from the pole group, and the protective film 303 is attached to the protective sheet 302 and covers all the ventilation holes 3021.
In one embodiment, the spacing between adjacent venting holes 3021 is 2.0mm to 3.0mm along the length of the explosion proof valve 301.
Specifically, in one embodiment, as shown in fig. 4, the ventilation holes 3021 are circular holes, and the distance between the centers of the two ventilation holes 3021 along the length direction of the explosion-proof valve 301 is L, where the range of L is 2.0mm to 3.0mm. Controlling the interval between the adjacent ventilation holes 3021 within this range can prevent the distribution among the plurality of ventilation holes 3021 from being too loose to affect the stability of the subsequent attachment protection film 303.
Specifically, in one embodiment, the number of ventilation holes 3021 is 2 to 6.
In one embodiment, referring to fig. 3 and 4, the explosion-proof valves 301 are provided in four, and are distributed in a matrix on the protective sheet 302. The shape and number of the ventilation holes 3021 are not limited, and may be determined according to circumstances.
Specifically, the shape of the protection sheet 302 is matched with the shape of the explosion-proof valve 301, and the protection sheet 302 can completely cover the explosion-proof valve 301 to protect the explosion-proof valve 301.
In one embodiment, a ring of adhesive layer is disposed on the protective film 303 and near the edge of the protective film 303, and the protective film 303 is adhered to the protective sheet 302 through the adhesive layer. Namely, the abutting surfaces of the protective film 303 and the protective sheet 302 are attached and connected by an adhesive layer. In one embodiment, the width of the glue layer is 0.5mm to 1.0mm. This can ensure firm adhesion between the protective film 303 and the protective sheet 302, and can also save costs effectively.
In one embodiment, the protective film 303 has a thickness of 0.03mm to 0.05mm. The thickness of the protective film 303 is preferably controlled within the range, the protective film 303 is too small in thickness, poor in self performance and easy to damage, the adhesive bonding connection assembly difficulty between the protective sheets 302 is high, the thickness of the protective film 303 is too large, on one hand, the cost is high, on the other hand, the air permeability is reduced, the internal and external pressure difference of the explosion-proof valve 301 is influenced, and the normal explosion of the explosion-proof valve 301 is influenced.
In one embodiment, the protective film 303 is made of polyvinylidene fluoride (PVDF), which has excellent chemical resistance, air permeability and water resistance.
In one embodiment, the housing 1 includes two oppositely disposed first walls 101 and a second wall 102 connecting the two first walls 101 along a long side of the first walls 101, the first walls 101 have a larger area than the second walls 102, the second walls 102 are oppositely disposed with respect to the cover plate 2, and the surface of any one or more of the two first walls 101 and the second walls 102 is provided with the heat dissipation layer 4.
Specifically, in the present embodiment, referring to fig. 8, the housing 1 has a rectangular parallelepiped structure with a cavity, the first wall 101 is a large surface of the housing 1, and the second wall 102 is a bottom surface disposed opposite to the top cover. In one embodiment, as shown in fig. 7, the heat dissipation layer 4 is provided only on the second wall 102. In another embodiment, referring to fig. 8 and 9, both the first wall 101 and the second wall 102 of the housing 1 are provided with a heat dissipation layer 4, i.e. the heat dissipation layer 4 continuously encases the first wall 101 and the second wall 102. The heat dissipation layer 4 is made of a dual-function carbon nanotube composite salt material (DFCNT-HS), the DFCNT-HS has good heat conduction performance, is convenient for heat dissipation of the battery 10, and has flame retardant property, and compared with a traditional blue film, the DFCNT-HS has good flame retardant property, heat conduction and heat dissipation performance. The heat absorption, heat dissipation and excellent heat dissipation layer 4 of fire resistance are arranged outside the battery cell, and when the battery cell works normally, the heat dissipation layer 4 can timely and continuously transfer heat from the battery cell to the battery cell and timely dissipate the heat, so that the battery 10 is cooled, a large amount of heat accumulation is avoided, and the circulation performance and the safety performance of the battery cell are improved.
In one embodiment, the heat dissipation layer 4 has a thickness of 0.5mm to 1.0mm. The heat dissipation layer 4 is controlled in the range, so that good heat dissipation effect can be ensured, the thickness is too small, on the one hand, the molding is difficult, on the other hand, the heat dissipation performance is reduced, and the thickness is too large to occupy the use space of the battery module 100.
In one embodiment, the heat dissipation layer 4 includes a heat dissipation portion 401 disposed on the first wall 101, and the temperature monitoring component 5 is disposed on the heat dissipation portion 401.
Through setting up temperature monitoring assembly 5 for the temperature of real-time supervision battery 10, when the temperature surpassed safe temperature position, can provide the signal for the personnel, in time withdraw, guarantee personal safety. For example, when the battery 10 is applied to an automobile, for example, short circuit occurs in the battery 10, the battery 10 can generate heat and explode on fire, and the temperature monitoring assembly is arranged, so that people can be timely reminded of being powered off and keeping away from when the temperature of the battery 10 is too high and exceeds a safe temperature range, and personal safety is protected.
In one embodiment, the upper edge of the heat sink 401 is spaced from the open end of the housing 1 by 15mm to 30mm and spaced from the left and right edges of the first wall 101 of the housing 1 by 15mm to 20mm. The heat dissipation layer 4 has not only heat conduction, heat dissipation and flame retardance, but also a buffering capacity since the heat dissipation layer 4 is made of a flexible material. When the battery 10 is assembled into the battery module 100, the batteries 10 are generally arranged in a large-sized face, i.e., in a manner adjacent to the first wall 101 of the case 1. Two heat dissipation layers 4 are disposed between the adjacent first walls 101, so that the heat dissipation layers 4 can play a role in buffering and absorbing channeling force when the battery 10 shakes. When the area of the heat dissipation part 401 is small, it is not advantageous to absorb the channeling force when the battery 10 shakes, and it is not advantageous to stabilize the battery 10 in the battery module 100. When the area of the heat dissipation portion 401 is large, the cost is high, which is not favorable for cost reduction.
In one embodiment, the heat dissipation portion 401 is provided with a mounting groove, the temperature monitoring assembly 5 includes a chip 501 and a plurality of temperature sensors 502 electrically connected to the chip 501, the chip 501 is disposed in the mounting groove, the plurality of temperature sensors 502 are disposed around the chip 501 at intervals, and the temperature sensors 502 are disposed on an outer surface of the heat dissipation portion 401.
The temperature sensors 502 can test the temperature of a plurality of potentials and transmit temperature signals to the chip 501, and the chip 501 can monitor the temperature of the battery 10, and once the temperature exceeds a set safety temperature range, an alarm signal is sent to remind people of power failure and keeping away.
In one embodiment, the area of the mounting groove is controlled to 400mm 2 ～500mm 2 To accommodate the area of the chip 501 on the market. Referring to fig. 1, the chip 501 has a square shape, and thus, the mounting groove has a square shape.
In one embodiment, referring to fig. 8 and 9, the temperature monitoring assembly 5 is provided on only one first wall 101, i.e., the temperature monitoring assembly 5 is provided on one side of the battery 10 at a lower cost.
In one embodiment, the outer surface of the chip 501 is recessed from 0.1mm to 0.2mm from the outer surface of the heat sink layer 4. The arrangement ensures that the connection stability between the chip 501 and the heat dissipation layer 4 is better, and meanwhile, the chip 501 is not exposed, so that a certain protection effect can be achieved on the chip 501. If the thickness of the chip 501 is greater than that of the heat dissipation layer 4, the chip 501 protrudes from the heat dissipation layer 4, which damages the appearance of the product and occupies the usage space of the battery module 100.
In one embodiment, the mounting groove is a through hole, and one side surface of the chip 501 abuts against the first wall 101 of the housing 1, and the other side surface of the chip 501 is located in the mounting groove.
In one embodiment, the thickness of the chip 501 is 0.4mm to 0.8mm.
Further, be equipped with utmost point post 6 on the apron 2, utmost point post 6 includes positive pole post and negative pole post, and the utmost point group is equipped with anodal utmost point ear and negative pole utmost point ear, and positive pole post and anodal utmost point ear electricity are connected, and negative pole post and negative pole utmost point ear electricity are connected.
According to a second aspect of the embodiment of the present utility model, there is also provided a battery module 100 including the battery 10 of any one of the above.
According to an embodiment of the present utility model, in a third aspect, there is also provided a battery pack including a plurality of the batteries 10 of any one of the above technical aspects.
Since the battery pack includes the battery 10, it has the same effect as the battery 10, and is not described herein.
Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.
Claims (10)
1. A battery, comprising:
the pole group is arranged in the shell, and one end of the shell is opened;
the cover plate is arranged at the open end of the shell and is provided with a mounting hole;
the explosion-proof valve assembly comprises an explosion-proof valve, a protection sheet and a protection film which are sequentially arranged along the direction away from the pole group; the explosion-proof valve is arranged in the mounting hole, the protection sheet is covered on the mounting hole, and a plurality of ventilation holes are formed in the protection sheet; the protective film is arranged on the protective sheet and at least covers all the ventilation holes, and the protective film is overgas and overliquid.
2. The battery of claim 1, wherein a distance between adjacent vent holes is 2.0mm to 3.0mm along a length direction of the explosion-proof valve.
3. The battery according to claim 1 or 2, wherein a ring of adhesive layer is provided on the protective film near the edge of the protective film, and the protective film is adhered to the protective sheet through the adhesive layer.
4. The battery according to claim 1 or 2, wherein the protective film has a thickness of 0.03mm to 0.05mm.
5. The battery according to claim 1 or 2, wherein the case includes two oppositely disposed first walls and a second wall connecting the two first walls along a long side of the first walls, the first wall having an area larger than that of the second wall, the second wall being oppositely disposed with the cover plate, and a surface of any one or more of the two first walls and the second wall being provided with a heat dissipation layer.
6. The battery of claim 5, wherein the heat dissipation layer has a thickness of 0.5mm to 1.0mm.
7. The battery of claim 5, wherein the heat sink layer comprises a heat sink portion disposed on the first wall, the heat sink portion having a temperature monitoring assembly disposed thereon.
8. The battery of claim 7, wherein the heat sink is provided with a mounting groove, the temperature monitoring assembly comprises a chip and a plurality of temperature sensors electrically connected with the chip, the chip is arranged in the mounting groove, the plurality of temperature sensors are arranged at intervals around the chip, and the temperature sensors are arranged on the outer surface of the heat sink.
9. The battery of claim 8, wherein the outer surface of the chip is recessed from the outer surface of the heat sink layer, and the depth of the recess is 0.1mm to 0.2mm.
10. A battery pack comprising a plurality of the batteries of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321459207.6U CN220021482U (en) | 2023-06-08 | 2023-06-08 | Battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321459207.6U CN220021482U (en) | 2023-06-08 | 2023-06-08 | Battery and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220021482U true CN220021482U (en) | 2023-11-14 |
Family
ID=88669942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321459207.6U Active CN220021482U (en) | 2023-06-08 | 2023-06-08 | Battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220021482U (en) |
-
2023
- 2023-06-08 CN CN202321459207.6U patent/CN220021482U/en active Active
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