CN208284595U - A kind of inner pressure of lithium ion battery monitoring device and its monitoring system - Google Patents
A kind of inner pressure of lithium ion battery monitoring device and its monitoring system Download PDFInfo
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- CN208284595U CN208284595U CN201820842380.7U CN201820842380U CN208284595U CN 208284595 U CN208284595 U CN 208284595U CN 201820842380 U CN201820842380 U CN 201820842380U CN 208284595 U CN208284595 U CN 208284595U
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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 discloses a kind of inner pressure of lithium ion battery monitoring devices, it is characterised in that: including monitor component and fixation kit；The monitor component includes the sealing ring and sensor for being sequentially arranged in battery cathode；The section of the sealing ring is " I " fonts, and one end is arranged battery cathode, and after the other end is arranged sensor pressure sensitivity face side, pressure transition storehouse is formed on sealing ring.The utility model provides a kind of inner pressure of lithium ion battery monitoring device, can not only monitor in real time the internal pressure of battery under various situations, can Reusability, but also it is not high by lithium battery structure constraint, measurement accuracy.
Description
Technical field
The utility model belongs to battery performance and cell safety technical field, and in particular to a kind of inside lithium ion cell pressure
Power monitoring device and its monitoring system.
Background technique
With extensive use of the lithium ion battery on new-energy automobile, security performance is increasingly by the pass of people
Note.Due to the continuous promotion of battery capacity, inside battery remaining space becomes smaller and smaller, battery stores in the high temperature environment,
Overcharge, overdischarge are crossed and various abuses can generate gas in the process, and the accumulation of gas increases cell internal pressure, causes
Battery short circuit even explodes.Inner pressure of battery complex genesis, at present for mainly by battery composition material, manufacturing process and battery
The limitation of the factors such as structure, therefore, precise measurement cell internal pressure, which provides critical data for the design of battery, seems that have very much must
It wants.
In the prior art, there are many kinds of the methods measured cell internal pressure, and one is the deformation by battery case
The pressure of inside battery is calculated, although this method strong operability, the cylindrical steel shell battery hardly deformed is come
Say that reliability is very low；Another kind is then to dissect battery in the preset action paper of inside battery, by pressure sensitive paper and standard colorimetric
Card comparison is to obtain cell internal pressure situation, the method poor in timeliness, and the expansion of core influences test result in battery
It is larger, therefore data reliability is poor；It is exactly to change battery structure external sensor there are also one kind, the method increases battery
Residual volume cannot react the pressure condition under former spatiality, therefore above-mentioned several method is not able to satisfy inside battery pressure
The High Precision Monitor of power.
Summary of the invention
In order to solve the deficiencies in the prior art, the utility model provides a kind of inner pressure of lithium ion battery monitoring
Device and its monitoring system, can not only monitor in real time the internal pressure of battery under various situations, can Reusability, but also not by lithium
Battery structure constraint, measurement accuracy are high.
The utility model technical effect to be achieved is realized by following scheme:
Inner pressure of lithium ion battery monitoring device in the utility model, including monitor component and fixation kit；It is described
Monitor component includes the sealing ring and sensor for being sequentially arranged in battery cathode；The section of the sealing ring is " I " fonts, one end
It is arranged battery cathode, after the other end is arranged sensor pressure sensitivity face side, forms pressure transition storehouse on sealing ring.
The sealing ring is used to for battery and sensor assembly being integrated, after sealing ring and battery assembly, shape on sealing ring
At pressure transition storehouse, for the pressure inside induced cell, deformation occurs is transferred to sensor pressure sensitivity face, makes the number of measurement
According to more precisely；The pressure parameter that the sensor passes through the distortion measurement inside battery of sealing ring.
Further, the sealing ring and battery cathode and sensor pressure sensitivity face contact position with a thickness of 0.25-
0.5mm, can avoid contact with that position is blocked up, and the pressure of inside battery can not make sealing ring, and deformation occurs, leads to pressure measurement not
Accurately, and it is avoided that contact position is excessively thin, the pressure of inside battery causes sealing ring to rupture and damage.
Further, the material of the sealing ring is the insulating elastic material for including electro-insulating rubber, the silica gel that insulate, rubber of insulating
Glue and insulation silica gel not only have good elasticity and insulation performance, but also have good heat resistance.
Further, after the monitor component and battery assembly, external environmental sealing adhesive tape, for improving battery and monitoring
The security performance of component, the sealant tape be Teflon adhesive tape or Kapton Tape, not only have it is frivolous, but also have it is good
Good insulating properties, corrosion resistance and high temperature resistance.
Further, the fixation kit is set to outside battery and monitor component, including crust of the device, nut and compression
Ring；Described device shell is both ends open, sets threaded cavity structure, is connected close to anode one end with the nut
Connect, be connected with the compression ring close to battery cathode one end, and on described device case body, nut middle part and institute
It states and offers insulated conductor channel in the middle part of compression ring, for insulated conductor to be arranged, convenient for battery and sensor and external equipment
Connection.Described device shell is for fixing and assembling battery, the nut and compression ring for consolidating battery and monitor component
Due in crust of the device, and the leakproofness between battery and sensor is guaranteed by the elasticity of regulating nut and compression ring.
For leakproofness and stability that the guarantee nut and compression ring are connect with crust of the device, the nut is preferentially adopted with crust of the device
It is connected with external screw thread, the compression ring is preferentially connected using internal screw thread with crust of the device；The nut and the compression ring
It is greater than 60MPa with the pressure of screw receiving after crust of the device locking, to guarantee the safety of device entirety；Preferably aluminium alloy or
Stainless steel material not only has good explosion-proof performance and high temperature corrosion-resisting performance, but also has good conductivity of heat.
Further, the fixation kit is set to outside battery and monitor component, including crust of the device and nut；The dress
Setting shell is close to anode is open at one end, is connected equipped with screw thread with the nut, and close battery cathode is closed at one end
Cavity structure；And the housing central section in the middle part of the nut, on described device case body and close to battery cathode one end opens up
There is insulated conductor channel, for insulated conductor to be arranged, convenient for the connection of battery and sensor and external equipment.Described device shell
For fixing and assembling battery, the nut passes through adjusting spiral shell for battery and monitor component to be fixed in crust of the device
The elasticity of cap guarantees the leakproofness between battery and sensor.The leakproofness being connect for the guarantee nut with crust of the device
And stability, the nut are preferentially connected using external screw thread with crust of the device；Screw after the nut and crust of the device locking
The pressure of receiving is greater than 60MPa, to guarantee the safety of device entirety；Preferably aluminium alloy or stainless steel material, not only have
Good explosion-proof performance and high temperature corrosion-resisting performance, and there is good conductivity of heat.
Further, the fixation kit is set to outside battery and monitor component, including crust of the device and compression ring；It is described
Crust of the device is close one end seal of anode close to battery cathode is open at one end, is connected equipped with screw thread with the compression ring
The cavity structure closed；And the housing central section in the middle part of the compression ring, on described device case body and close to anode one end
Insulated conductor channel is offered, for insulated conductor to be arranged, convenient for the connection of battery and sensor and external equipment.The dress
It sets shell and leads to for fixing and assembling battery, the compression ring for battery and monitor component to be fixed in crust of the device
The elasticity of compression ring is overregulated to guarantee the leakproofness between battery and sensor.To guarantee the compression ring and crust of the device
The leakproofness and stability of connection, the compression ring are preferentially connected using internal screw thread with crust of the device；The compression ring and dress
It sets the pressure that screw is born after shell is locked and is greater than 60MPa, to guarantee the safety of device entirety；Preferably aluminium alloy or stainless
Steel material not only has good explosion-proof performance and high temperature corrosion-resisting performance, but also has good conductivity of heat.
Further, the felt pad being sheathed on anode is equipped between the nut or crust of the device and anode
Circle improves the security performance of battery for the insulation of battery and nut or crust of the device；The insulating washer be electro-insulating rubber or
Insulate silica gel material, not only has good elasticity and insulation performance, but also have good heat resistance.
It further, further include the insulation that battery and sensor are separately connected to external charging/discharging apparatus and electronic computer
Conducting wire.The insulated conductor of the battery is connected with external charging/discharging apparatus, for carrying out charge and discharge to battery；The sensor
Insulated conductor be connected with external electronic computer, for acquiring the pressure data on sensor and giving sensor confession simultaneously
Electricity.
Further, the sensor is corrosion resistant type pressure sensor, prevents the leakage corrosion sensor of battery；And it presses
The power test scope upper limit is higher than 60MPa, guarantees that cell internal pressure in the test scope of sensor, avoids cell internal pressure
Excessive, sensor can not be measured accurately.
A kind of inner pressure of lithium ion battery monitoring system, it is characterised in that: including in battery and the lithium ion battery
Portion's pressure monitoring device, the battery case cathode of the battery are equipped with through-hole, and the through-hole is convenient for truer, accurate test electricity
Pressure inside pond.
Further, the position in the pressure transition storehouse is corresponding with the through-hole, and size is consistent with the through-hole, is battery
The 1/3-2/3 of shell cathode areas；The pressure transition storehouse by battery cathode and sealing ring assembly after formed, therefore with the through-hole
Position is corresponding, in the same size；The size of through-hole is the 1/3-2/3 of battery case cathode areas, can make the pressure of inside battery
It is truer, accurate to be measured, and can prevent through-hole is excessive to cause battery that the phenomenon of leakage occurs.
The inner pressure of lithium ion battery monitoring device and its monitoring system of the utility model have the advantage that
1, the internal pressure of battery under various situations can be monitored in real time, it can Reusability.
2, it is not constrained by lithium battery structure, can be cylinder, rectangular or soft-package battery, but be not limited to these structures, it should
Device can be implemented.
3, measurement accuracy is high, very close with cell internal pressure under actual conditions, mentions for battery producer in safe design
For critical data testing scheme, be conducive to safe design and the research of battery.
Detailed description of the invention
Fig. 1 is inner pressure of lithium ion battery monitoring device (nut-crust of the device-compression ring structure) in the utility model
Assembly overall structure diagram；
Fig. 2 is the assembly of inner pressure of lithium ion battery monitoring device (nut-crust of the device structure) in the utility model
Overall structure diagram；
The assembly of inner pressure of lithium ion battery monitoring device (crust of the device-compression ring structure) in Fig. 3 the utility model
Overall structure diagram.
The reference numerals are as follows:
1, battery；101, through-hole；2, sealing ring；201, pressure transition storehouse；3 sensors；4, crust of the device；；5, nut；6,
Compression ring；7, insulating washer.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
Inner pressure of lithium ion battery monitoring device in the embodiments of the present invention as shown in attached drawing 1,2,3, including
Monitor component and fixation kit, monitor component include the sealing ring 2 and sensor 3 for being sequentially arranged in battery cathode；Sealing ring is cut
Face is " I " fonts, and one end is arranged battery cathode, and after the other end is arranged sensor pressure sensitivity face side, pressure mistake is formed on sealing ring
Cross storehouse 201.
Sealing ring is used to for battery and sensor assembly being integrated, and after sealing ring and battery assembly, pressure is formed on sealing ring
Power transitional storehouse, for the pressure inside induced cell, deformation occurs is transferred to sensor pressure sensitivity face, makes the data of measurement more
Precisely；The pressure parameter that sensor passes through the distortion measurement inside battery of sealing ring.Sensor 3 is corrosion resistant type pressure sensing
Device prevents the leakage corrosion sensor of battery；And pressure test range limit is higher than 60MPa, guarantees that cell internal pressure is passing
In the test scope of sensor, avoid cell internal pressure excessive, sensor can not be measured accurately.
Sealing ring and battery cathode and sensor pressure sensitivity face contact position with a thickness of 0.25-0.5mm, can avoid contact with
Position is blocked up, and the pressure of inside battery can not make sealing ring, and deformation occurs, causes pressure measurement inaccurate, and is avoided that contact position
Set it is excessively thin, the pressure of inside battery cause sealing ring rupture and damage.The material of sealing ring be include electro-insulating rubber, insulation silica gel
Insulating elastic material, electro-insulating rubber and insulation silica gel not only have it is good elasticity and insulation performance, but also have it is good
Heat resistance.After monitor component and battery assembly, external environmental sealing adhesive tape (not indicated in figure), for improving battery and monitoring
The security performance of component, sealant tape be Teflon adhesive tape or Kapton Tape, not only have it is frivolous, but also have it is good
Insulating properties, corrosion resistance and high temperature resistance.
Fixation kit is set to outside battery and monitor component, can be for outside nut-device for the fixation and assembly of battery
Shell-compression ring structure, nut-crust of the device structure or crust of the device-compression ring structure, nut 5 or crust of the device 4 and battery are just
It is equipped with the insulating washer 7 being sheathed on anode between pole, for the insulation of battery and nut or crust of the device, improves battery
Security performance；Insulating washer is electro-insulating rubber or insulation silica gel material, not only has good elasticity and insulation performance, but also
With good heat resistance.Inner pressure of lithium ion battery monitoring device further includes that battery and sensor are separately connected outside
The insulated conductor (not indicated in figure) of charging/discharging apparatus and electronic computer, the insulated conductor of battery and external charging/discharging apparatus
It is connected, for carrying out charge and discharge to battery；The insulated conductor of sensor is connected with external electronic computer, for acquiring sensing
Pressure data on device simultaneously gives sensor to power simultaneously.
A kind of inner pressure of lithium ion battery monitoring system, including battery and above-mentioned inner pressure of lithium ion battery monitoring
The battery case cathode of device, battery 1 is equipped with through-hole 101, convenient for the pressure of truer, accurate test inside battery.Pressure
The position of transitional storehouse 201 is corresponding with through-hole, and size is consistent with through-hole, is the 1/3-2/3 of battery case cathode areas；Pressure transition
Storehouse is formed after being assembled by battery cathode and sealing ring, therefore corresponding with lead to the hole site, in the same size；The size of through-hole is battery case
The 1/3-2/3 of cathode areas can make the pressure of inside battery more really, accurately be measured and prevent through-hole is excessive from leading
It sends a telegraph pond and the phenomenon of leakage occurs.
The specific embodiment of inner pressure of lithium ion battery monitoring device in the embodiments of the present invention is as follows:
Embodiment 1:
As shown in Fig. 1, fixation kit is set to outside battery and monitor component, including crust of the device 4, nut 5 and compression
Ring 6；Crust of the device is both ends open, sets threaded cavity structure, is connected close to anode one end with nut, close to electricity
Pond cathode one end is connected with compression ring, and offers insulation on crust of the device shell, in the middle part of nut middle part and compression ring
Wire channel, for insulated conductor to be arranged, convenient for the connection of battery and sensor and external equipment.Crust of the device for fixed and
Battery, nut and compression ring are assembled for battery and monitor component to be fixed in crust of the device, and passes through regulating nut and pressure
The elasticity of tight ring guarantees the leakproofness between battery and sensor.To guarantee what nut and compression ring were connect with crust of the device
Leakproofness and stability, nut are preferentially connected using external screw thread with crust of the device, and compression ring preferentially uses interior with crust of the device
Screw thread is connected；The pressure that screw is born after nut and the locking of compression ring and crust of the device is greater than 60MPa, to guarantee device entirety
Safety；Preferably aluminium alloy or stainless steel material not only have good explosion-proof performance and high temperature corrosion-resisting performance, but also
With good conductivity of heat.
Embodiment 2:
As shown in Fig. 2, fixation kit is set to outside battery and monitor component, including crust of the device 4 and nut 5；Device
Shell is the close battery cathode cavity knot closed at one end close to anode is open at one end, is connected equipped with screw thread with nut
Structure；And the housing central section in the middle part of nut, on crust of the device shell and close to battery cathode one end offers insulated conductor channel,
For insulated conductor to be arranged, convenient for the connection of battery and sensor and external equipment.Crust of the device is used to fixing and assembling battery,
Nut guarantees battery and biography by the elasticity of regulating nut for battery and monitor component to be fixed in crust of the device
Leakproofness between sensor.For leakproofness and stability that the guarantee nut is connect with crust of the device, the nut and device
Shell is preferentially connected using external screw thread；The pressure that screw is born after the nut and crust of the device locking is greater than 60MPa, to protect
The safety of card device entirety；Preferably aluminium alloy or stainless steel material not only have good explosion-proof performance and high temperature corrosion resistant
Corrosion energy, and there is good conductivity of heat.
Embodiment 3:
As shown in Fig. 3, fixation kit is set to outside battery and monitor component, including crust of the device 4 and compression ring 6；Dress
Setting shell is the close anode sky closed at one end close to battery cathode is open at one end, is connected equipped with screw thread with compression ring
Cavity configuration；And the housing central section in the middle part of compression ring, on crust of the device shell and close to anode one end offers insulation and leads
Line passage, for insulated conductor to be arranged, convenient for the connection of battery and sensor and external equipment.Crust of the device is for fixing and filling
With battery, compression ring for battery and monitor component to be fixed in crust of the device, and the elasticity by adjusting compression ring come
Guarantee the leakproofness between battery and sensor.For leakproofness and stability that guarantee compression ring is connect with crust of the device, compress
Ring is preferentially connected using internal screw thread with crust of the device；The pressure that screw is born after compression ring is locked with crust of the device is greater than
60MPa, to guarantee the safety of device entirety；Preferably aluminium alloy or stainless steel material not only have good explosion-proof performance
With high temperature corrosion-resisting performance, and have good conductivity of heat.
By pressure monitoring device be placed in including chemical conversion, high temperature storage different conditions in or using charging/discharging apparatus to test
Battery carries out charge and discharge, can be monitored in real time by the electronic computer being connected with sensor, analyze the pressure tested in battery
Parameter.It is consistent with commercial finished battery to test battery specifications size, and tests the assembly technology and pressure monitoring device of battery
It encapsulates the temperature and humidity being related to and meets battery of the same type producing line technical papers requirement.
Inner pressure of lithium ion battery monitoring device and its monitoring system in the embodiments of the present invention, by electricity
Pond shell cathode, which opens up through-hole, keeps the pressure energy of inside battery truer, accurate monitored, and battery cathode and sealing ring assemble,
Pressure transition storehouse corresponding with lead to the hole site, of the same size is formed on sealing ring, the pressure hair inside sealing ring induced cell
Raw deformation, forms deformation pressure, and be transferred on the sensor pressure sensitivity face for being assemblied in the sealing ring other end by pressure transition storehouse,
Keep the data of measurement more accurate.
Fixation kit is equipped with outside battery and monitor component, for fixing battery and monitor component, the device of fixation kit
Shell can be both ends open or cavity structure open at one end, closed at one end, when the cavity structure that crust of the device is both ends open
When, the elasticity of regulating nut and compression ring can be used to guarantee the leakproofness between battery and sensor；When crust of the device is
When cavity structure open at one end, closed at one end, the elasticity of regulating nut or compression ring and crust of the device can be used to guarantee
Leakproofness between battery and sensor.Insulated conductor channel, the insulation on battery and sensor are offered on fixation kit
Conducting wire can be connected by insulated conductor channel with external charging/discharging apparatus and electronic computer, and charging/discharging apparatus is used for battery
Charge and discharge are carried out, electronic computer is used to acquire the pressure data on sensor and powers simultaneously to sensor.
For the safety for promoting test device entirety, package insulation, corrosion resistant sealant outside battery and monitor component
Band is equipped with the insulating washer being arranged with anode, and uses explosion-proof performance and high temperature corrosion-resisting between anode and nut
As crust of the device, nut and compression ring, sensor is also chosen by corrosion resistant type pressure for aluminium alloy of good performance or stainless steel material
Force snesor.
It can be seen that the utility model from the scheme of above-described embodiment and provide a kind of inner pressure of lithium ion battery monitoring
Device and its monitoring system, can not only monitor in real time the internal pressure of battery under various situations, can Reusability, but also not by lithium
Battery structure constraint, measurement accuracy are high.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model embodiment rather than right
It is limited, although the utility model embodiment is described in detail referring to preferred embodiment, this field it is common
Technical staff should understand that still be modified or replaced equivalently the technical solution of the utility model embodiment, and this
A little ranges modified or equivalent replacement cannot also make modified technical solution be detached from the utility model embodiment technical solution.
Claims (12)
1. a kind of inner pressure of lithium ion battery monitoring device, it is characterised in that: including monitor component and fixation kit；
The monitor component includes the sealing ring and sensor for being sequentially arranged in battery cathode；
The section of the sealing ring is " I " fonts, and one end is arranged battery cathode, after the other end is arranged sensor pressure sensitivity face side,
Pressure transition storehouse is formed on sealing ring.
2. inner pressure of lithium ion battery monitoring device as described in claim 1, it is characterised in that: the sealing ring and battery are negative
Pole and sensor pressure sensitivity face contact position with a thickness of 0.25-0.5mm.
3. inner pressure of lithium ion battery monitoring device as described in claim 1, it is characterised in that: the material of the sealing ring is
Insulating elastic material including electro-insulating rubber, the silica gel that insulate.
4. inner pressure of lithium ion battery monitoring device as described in claim 1, it is characterised in that: the monitor component and battery
After assembling, external environmental sealing adhesive tape, the sealant tape is Teflon adhesive tape or Kapton Tape.
5. inner pressure of lithium ion battery monitoring device as described in claim 1, it is characterised in that: the fixation kit is set to electricity
Outside pond and monitor component, including crust of the device, nut and compression ring；Described device shell be both ends open, set it is threaded
Cavity structure is connected close to anode one end with the nut, is connected close to battery cathode one end with the compression ring,
And insulated conductor channel is offered on described device case body, in the middle part of nut middle part and the compression ring.
6. inner pressure of lithium ion battery monitoring device as described in claim 1, it is characterised in that: the fixation kit is set to electricity
Outside pond and monitor component, including crust of the device and nut；Described device shell is that close anode is open at one end, is equipped with spiral shell
Line is connected with the nut, close to battery cathode cavity structure closed at one end；And the nut middle part, described device shell
Housing central section on shell and close to battery cathode one end offers insulated conductor channel.
7. inner pressure of lithium ion battery monitoring device as described in claim 1, it is characterised in that: the fixation kit is set to electricity
Outside pond and monitor component, including crust of the device and compression ring；Described device shell is close to battery cathode is open at one end, is equipped with
Screw thread is connected with the compression ring, close to anode cavity structure closed at one end；And the compression ring middle part, the dress
It sets the housing central section on case body and close to anode one end and offers insulated conductor channel.
8. the inner pressure of lithium ion battery monitoring device as described in claim 5 or 6, it is characterised in that: the nut or device
The insulating washer being sheathed on anode is equipped between shell and anode, the insulating washer is electro-insulating rubber or insulation
Silica gel material.
9. inner pressure of lithium ion battery monitoring device as described in claim 1, it is characterised in that: further include by battery and sensing
Device is separately connected the insulated conductor of external charging/discharging apparatus and electronic computer.
10. inner pressure of lithium ion battery monitoring device as described in claim 1, it is characterised in that: the sensor is corrosion resistant
Erosion type pressure sensor, and pressure test range limit is higher than 60MPa.
11. a kind of inner pressure of lithium ion battery monitoring system, it is characterised in that: any one including battery and claim 1-10
The battery case cathode of inner pressure of lithium ion battery monitoring device described in, the battery is equipped with through-hole.
12. inner pressure of lithium ion battery monitoring system as claimed in claim 11, it is characterised in that: the pressure transition storehouse
Position is corresponding with the through-hole, and size is consistent with the through-hole, is the 1/3-2/3 of battery case cathode areas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820842380.7U CN208284595U (en) | 2018-06-01 | 2018-06-01 | A kind of inner pressure of lithium ion battery monitoring device and its monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820842380.7U CN208284595U (en) | 2018-06-01 | 2018-06-01 | A kind of inner pressure of lithium ion battery monitoring device and its monitoring system |
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| Publication Number | Publication Date |
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| CN208284595U true CN208284595U (en) | 2018-12-25 |
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ID=64705717
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| CN201820842380.7U Active CN208284595U (en) | 2018-06-01 | 2018-06-01 | A kind of inner pressure of lithium ion battery monitoring device and its monitoring system |
Country Status (1)
| Country | Link |
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2018
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