CN207883867U - Battery temperature measuring system, battery pack temperature monitoring system and battery pack - Google Patents
Battery temperature measuring system, battery pack temperature monitoring system and battery pack Download PDFInfo
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- CN207883867U CN207883867U CN201820222764.9U CN201820222764U CN207883867U CN 207883867 U CN207883867 U CN 207883867U CN 201820222764 U CN201820222764 U CN 201820222764U CN 207883867 U CN207883867 U CN 207883867U
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- battery
- temperature
- heat discoloration
- discoloration element
- battery pack
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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 is related to a kind of battery temperature measuring systems, including：Heat discoloration element on battery for temperature sensor variation acquires the image collecting device of the colouring information of the heat discoloration element, the image processing apparatus and secondary light source of colouring information processing；Secondary light source includes optical sensor and light source；The optical sensor is used to detect the light intensity of the battery ambient, and the light source is controlled when light intensity is weaker and provides illumination to the heat discoloration element on the battery, so that described image harvester collects the colouring information of heat discoloration element.Said program utilizes the light intensity of light sensor probes battery ambient, it controls light source and provides illumination to heat discoloration element, so that when the light intensity of battery ambient is weaker, image collecting device can collect the colouring information of heat discoloration element, image processing apparatus handles the colouring information, improves the accuracy measured pond temperature.Additionally provide battery pack temperature monitoring system and battery pack.
Description
Technical field
The utility model is related to battery thermal management technical fields, more particularly to a kind of battery temperature measuring system, battery
Group temperature monitoring system and battery pack.
Background technology
The problems such as in order to cope with increasingly serious energy shortages, air pollution, electric vehicle is as a kind of low energy consumption, low dirt
The new traffic tool for contaminating discharge, receives significant attention in recent years.Energy source of the power battery as electric vehicle, performance
Vehicle performance is directly affected, is one of core component of electric vehicle.
Internal battery pack temperature parameter will have a direct impact on battery performance, such as when battery temperature is too low can not normal charge and discharge
Electricity will influence battery life, increase Hot disaster risk when battery temperature is excessively high, when internal battery pack excessive temperature differentials will increase heat pipe
System burden is managed, battery pack whole service life is reduced, it is the basis for ensureing battery performance to be measured to battery pack temperature.
The battery temperature detection scheme of traditional technology is usually by image capture module, image processing module and temperature-sensitive module group
At, however this technology is in night or enclosure space in battery, when being such as in the battery pack of electric vehicle, is easy to cause to electricity
The accuracy that pond temperature measures is relatively low.
Utility model content
Based on this, it is necessary to for the relatively low problem of traditional technology accuracy, provide a kind of battery temperature measuring system, electricity
Pond group temperature monitoring system and battery pack.
A kind of battery temperature measuring system, including：Heat discoloration element on battery for temperature sensor variation, is adopted
Collect the image collecting device of the colouring information of the heat discoloration element, the image processing apparatus of colouring information processing, Yi Jifu
Help light source；
The secondary light source includes optical sensor and light source；
The optical sensor is used to detect the light intensity of the battery ambient, and the light source is controlled when light intensity is weaker to described
Heat discoloration element on battery provides illumination, so that described image harvester collects the color letter of heat discoloration element
Breath.
Said program utilizes the light intensity of light sensor probes battery ambient, control light source to provide photograph to heat discoloration element
It is bright so that when the light intensity of battery ambient is weaker, image collecting device can collect the colouring information of heat discoloration element, figure
As processing unit handles the colouring information, the accuracy measured battery temperature is improved.
In one embodiment, the quantity of the heat discoloration element is multiple；Each heat discoloration element difference
It is correspondingly arranged on each battery of battery pack.
In one embodiment, the heat discoloration element includes the heat discoloration unit of multiple and different temperature thresholds.
In one embodiment, the heat discoloration element is set between the lug of the battery；Described image acquisition dress
It sets mounted on the top of the battery, so that described image harvester collects the temperature-sensitive between the lug of battery
The colouring information of photochromic elements.
In one embodiment, the heat discoloration element is set to battery by way of coating, film stickup or paster
On.
In one embodiment, the heat discoloration element includes irreversible heat discoloration element.
In one embodiment, described image harvester includes camera and image pick-up card；The position of the camera
Set and be configured according to the position of the heat discoloration element, the camera by image pick-up card and image processing apparatus into
Row signal connects.
In one embodiment, the heat discoloration element, for converting the temperature information of the battery to color letter
Breath；Described image harvester, the colouring information for acquiring the heat discoloration element, is sent to image processing apparatus；Institute
Image processing apparatus is stated, the colouring information for receiving the acquisition of described image harvester obtains institute according to the colouring information
The color change state for stating heat discoloration element, the temperature threshold of color change state and heat discoloration element according to the heat discoloration element
Value measures the temperature of the battery.
In one embodiment, a kind of battery pack temperature monitoring system is provided, including described in any embodiment as above
Battery temperature measuring system, and the battery pack thermal management system that is managed for the temperature to each battery in battery pack；
The battery temperature measuring system, the temperature information for measuring each battery in the battery pack send the temperature information
To the battery thermal management system.
In one embodiment, it provides and configures in a kind of battery pack, including battery unit and each battery unit
Battery temperature measuring system or battery pack temperature monitoring system described in any embodiment as above.
Description of the drawings
Fig. 1 is the structural schematic diagram of the battery temperature measuring system in one embodiment；
Fig. 2 is the structural schematic diagram of the image collecting device in one embodiment；
Fig. 3 is the internal structure schematic diagram of the battery pack in one embodiment；
Fig. 4 is the temperature-sensing color-changing material property schematic diagram of the heat discoloration element in one embodiment；
Fig. 5 is the flow diagram of the battery pack temperature monitoring method in one embodiment；
Fig. 6 is the internal structure schematic diagram of the battery pack in another embodiment；
Fig. 7 is the temperature-sensing color-changing material property schematic diagram of the heat discoloration element in another embodiment；
Fig. 8 is the flow diagram of the battery pack temperature monitoring method in another embodiment.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
With reference to figure 1, Fig. 1 is the structural schematic diagram of the battery temperature measuring system in one embodiment, is to implement at one
Example, provides a kind of battery temperature measuring system, including：Heat discoloration element 100, image collecting device 200, image processing apparatus
300 and secondary light source 400.
Heat discoloration element 100 can be pasted by coating, film or the modes such as paster are attached on battery, can be used for
Convert the temperature information of battery to the colouring information of the heat discoloration element 100, shape, ruler to heat discoloration element 100
Very little, attachment position, adhering mode, temperature threshold, color change mode can be modified or be selected by actual demand, as long as really
Protect after heat discoloration element 100 adheres to collect colouring information by image collecting device 200 in vain.
Image collecting device 200 can be used for acquiring the colouring information of heat discoloration element 100, and collected color is believed
Breath is transmitted to image processing apparatus 300, and image processing apparatus 300 can be used for receiving the color that image collecting device 200 acquires
Information obtains the color change state of heat discoloration element 100 according to the colouring information, the discoloration shape according to heat discoloration element 100
The temperature threshold of state and heat discoloration element 100 measures the temperature of battery.
Secondary light source 400 may include optical sensor 410 and light source 420, and optical sensor 410 is for around monitoring cell
Light intensity, when ambient light is weaker, control light source 420 provides illumination to the heat discoloration element 100 on battery, with
Image collecting device 200 is enable to collect the colouring information of heat discoloration element 100, light source when light is weaker
420 optional white light sources, quantity and installation site can be designed according to actual battery group structure so that each battery
On heat discoloration element have substantial light photograph, and intensity of illumination clock, ensure heat discoloration element be enough by Image Acquisition
While device 200 acquires clear image, interference of the light source to system colors identification function is reduced to the greatest extent.
The technical solution of above-described embodiment, using the light intensity of light sensor probes battery ambient, control light source becomes temperature-sensitive
Color component provides illumination so that when the light intensity of battery ambient is weaker, image collecting device can collect heat discoloration element
Colouring information, image processing apparatus handles the colouring information, improves the accuracy measured battery temperature；And
Since heat discoloration element is with small, simply fast without conducting wire connection, the small and mounting means of influence that radiates on inside battery
The features such as prompt, the safety that battery can be measured into trip temperature in raising using the technical solution, and pass through heat discoloration
The color of element judges that battery temperature effect is intuitive, and failure electricity can quickly be determined by being conducive to the maintenance personal when battery temperature is excessively high
Pond position.
In one embodiment, heat discoloration element 100 can be prepared by temperature-sensing color-changing material, heat discoloration material
Material may include reversible temperature-sensing discoloring material and irreversible temperature-sensing color-changing material, and reversible refers to that the color of the material can be with temperature weight
It changes again, and irreversible refers to that material color variation just permanently stays in this color and no longer varies with temperature later, one
As for irreversible material can be applied to be conducive to maintenance personal's thing with the relevant alarm system of fire prediction, irreversible variation
The position of fail battery is quickly determined afterwards.
Wherein, temperature-sensing color-changing material is also referred to as thermosensitive chromotropic material or thermochromic material, feature be below and above
It can develop the color when a certain temperature threshold and such as become coloured, colour killing from colourless and such as become colourless from coloured or move color such as from red change
Purple and other effects, and the temperature threshold of different temperature-sensing color-changing materials also differs.The temperature-sensing color-changing material of the present embodiment is not
Specific to a certain color or a certain color changeable effect, as long as the material possesses the color difference before and after a certain fixed temperature threshold value
This property.Therefore, a kind of temperature threshold can be adhered to respectively on each battery of such as battery pack close to the battery
The heat discoloration element 100 of the normal working temperature limit, from the discoloration of the temperature-sensing color-changing material of the heat discoloration element 100
Judge whether corresponding battery reaches the early warning temperature of battery, a variety of different temperatures threshold values can also be adhered on same battery
The heat discoloration unit of temperature-sensing color-changing material judges the current temperature model of the battery according to the discoloration of each temperature-sensing color-changing material
It encloses.
With reference to figure 2, Fig. 2 is the structural schematic diagram of the image collecting device 200 in one embodiment, in one embodiment
In, image collecting device 200 may include camera 210 and image pick-up card 220, and the position of camera 210 can be according to sense
Warm photochromic elements 100 are arranged the position on battery and are correspondingly arranged, and camera 210 passes through image pick-up card 220 and image
Processing unit 300 carries out signal connection.
The present embodiment is mainly the position that the position of camera 210 is arranged according to heat discoloration element 100 on battery
It is correspondingly arranged, because under normal conditions such as power battery, the internal component characteristics of compact layout of the battery pack of power battery, sky
Between it is limited, therefore consider the Image Acquisition effect of image collecting device 200, camera 210, which is typically located at, to be collected
The position of most battery cell images can also acquire the image of different location simultaneously by the way that multiple cameras are arranged, and pass through
Image pick-up card 220 is transmitted to image processing apparatus 300.In addition, according to the distribution position of each battery of the battery pack to be monitored
Difference is set, the quantity and its arrangement of required camera 210 also differ, can be with considering cost and Image Acquisition effect
Camera 210 is arranged.
The technical solution of above-described embodiment makes the position of image collecting device and the position phase interworking of heat discoloration element
Setting is closed, can ensure that image collecting device accurately acquires the colouring information of heat discoloration element.
In one embodiment, image processing apparatus 300 may include microcontroller and its attachment, image processing apparatus 300
Operating mode can be：The image that image collecting device 200 acquires is read, identification is set to the heat discoloration element on battery
The colouring information is converted to battery by 100 color according to the color shifting properties of the temperature-sensing color-changing material of the heat discoloration element 100
Temperature information.
With reference to figure 3, Fig. 3 is the internal structure schematic diagram of the battery pack in one embodiment, in one embodiment, incite somebody to action this
4 × 6 battery pack that the cell-temperature monitoring system that utility model provides is applied to rectangular cell composition illustrates the utility model
Technical solution.
The quantity of heat discoloration element 100 in the cell-temperature monitoring system of the present embodiment can be it is multiple, will be multiple
Heat discoloration element 100 is respectively arranged between the lug of each battery of the battery pack, be such as arranged battery 500 lug it
Between, with reference to figure 4, Fig. 4 is the temperature-sensing color-changing material property schematic diagram of the heat discoloration element 100 in one embodiment, and temperature-sensitive becomes
The temperature threshold of the temperature-sensing color-changing material of color component 100 can be 60 DEG C, and discoloration mode can become red from white, also
It is to say, when the temperature of the material is less than 60 DEG C, color is white, and when the temperature of the material is higher than 60 DEG C, color is
It is red.
Two cameras 210 of image collecting device 200 can be mounted on right over the battery of battery pack, and will be auxiliary
Light source 400 is helped to be arranged above the side of battery pack so that camera 210 is under the cooperation of secondary light source 400, at dark or night
Environment in can also collect the colouring information of heat discoloration element 100 on each battery, and by the colouring information
It is sent in image processing apparatus 300 and carries out image procossing, monitor the temperature of each battery of battery pack.
As shown in figure 5, Fig. 5 is the flow diagram of the battery pack temperature monitoring method in one embodiment, this implementation can
To be monitored to the temperature of battery pack using following steps：
Camera 210 acquires the image information of battery pack in real time, and image processing apparatus is input to by image pick-up card 220
300, image processing apparatus 300 identifies that it is normal to export battery temperature if not recognizing red for the distribution of color in image
Information then export the excessively high information of battery temperature once recognizing red, so as to realize when battery temperature is excessively high into
Trip temperature is alarmed.
Using the technical solution of above-described embodiment, can in dark or night environment to each battery of battery pack into
Trip temperature monitors, and improves the accuracy of monitoring temperature, so as to realize that the high temperature of carry out when the temperature is excessively high in battery pack is pre-
It is alert, improve the safety that battery pack uses.
With reference to figure 6, Fig. 6 is the internal structure schematic diagram of the battery pack in another embodiment, in one embodiment, with
For 4 × 6 battery pack of rectangular cell composition, further the technical solution of the utility model is illustrated.
The quantity of heat discoloration element 100 in the cell-temperature monitoring system of the present embodiment can be it is multiple, will be multiple
Heat discoloration element 100 is respectively arranged between the lug of each battery of the battery pack, in order to improve the temperature measurement to battery
Accuracy, each heat discoloration element 100 may include the heat discoloration unit 110 of multiple and different temperature thresholds, each temperature-sensitive
Multiple heat discoloration units corresponding to photochromic elements 100 are attached on the same battery, and with reference to figure 7, Fig. 7 is implemented for another
The temperature-sensing color-changing material property schematic diagram of heat discoloration element 100 in example, can be by 6 kinds of different temperatures thresholds as shown in Figure 7
The heat discoloration element 100 of the temperature-sensing color-changing material of value is attached among two lugs of battery upper side, 6 kinds of heat discoloration materials
The temperature threshold of material is corresponding in turn to 25 DEG C, 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C and 50 DEG C, and the heat discoloration mode of the material is low
When the temperature threshold of this kind of material, color is respectively purple, blue, green, yellow, orange, red, is higher than the temperature threshold of this kind of material
When, color becomes white.For simplify describe, by the colors such as purple, blue, green, yellow, orange, red and white respectively with letter P, B, G,
Y, O, R, W are indicated.
Two cameras 210 of image collecting device 200 can be mounted on right over the battery of battery pack, and will be auxiliary
Light source 400 is helped to be arranged above the side of battery pack so that camera 210 is under the cooperation of secondary light source 400, at dark or night
Environment in can also collect the colouring information of each heat discoloration unit on each battery, and by the colouring information
It is sent in image processing apparatus and carries out image procossing, monitor the temperature of each battery of battery pack.
With reference to figure 8, Fig. 8 is the flow diagram of the battery pack temperature monitoring method in another embodiment, the present embodiment
Following steps may be used to be monitored the temperature of battery pack：
Camera 210 acquires battery pack upper side photo in real time, and image processing apparatus is input to by image pick-up card 220
300, each battery cell is identified in image processing apparatus 300, and is carried out as unit of single battery to the image of acquisition
It cuts and each battery is numbered, then the color of the heat discoloration element 100 in the subgraph after identification cutting, in conjunction with
Single battery numbers to form collection of illustrative plates array, and form can be expressed as：F (n)={ battery number n:Color c [] }, traverse collection of illustrative plates
Array f (n), to recycle the temperature for identifying each battery.
By taking battery #1 as an example, battery #1 can correspond to battery 500 shown in fig. 6, and the color array of temperature sensing material is f
(1) .c, when f (1) .c be equal to [P, B, G, Y, O, R], then illustrate battery #1 temperature T (1) be less than 25 DEG C；If f (1) .c is equal to
[W, B, G, Y, O, R] then illustrates that battery #1 temperature T (1) is more than or equal to 25 DEG C and is less than 30 DEG C；F if (1) .c be equal to [W, W,
G, Y, O, R], then illustrate that battery #1 temperature T (1) is more than or equal to 30 DEG C and is less than 35 DEG C；F if (1) .c be equal to [W, W, W, Y, O,
R], then illustrate that battery #1 temperature T (1) is more than or equal to 35 DEG C and is less than 40 DEG C；If f (1) .c is equal to [W, W, W, W, O, R], then
Illustrate that battery #1 temperature T (1) is more than or equal to 40 DEG C and is less than 45 DEG C；If f (1) .c is equal to [W, W, W, W, W, R], then illustrate electricity
Pond #1 temperature T (1) is more than or equal to 45 DEG C and is less than 50 DEG C；If f (1) .c is equal to [W, W, W, W, W, W], then illustrate battery #1 temperature
It spends T (1) and is more than or equal to 50 DEG C；If f (1) .c and above-mentioned color array are unequal, illustrate that failure occurs in system.
Above-described embodiment is not limited internal battery pack battery cell quantity, and arrangement mode does not also specially require,
It can be according to actual needs by the equipment such as the camera of image collecting device or image pick-up card and the installation position of secondary light source
Set, mounting means is configured, enable its image pickup scope include battery pack in each battery on heat discoloration unit.
The program is matched by the heat discoloration unit of multiple and different temperature thresholds of setting with secondary light source 400, energy
It is enough that the temperature of each battery of battery pack is more accurately measured in dark or night environment, to battery pack
When the temperature of each battery is monitored, each battery cell can be identified after the image for reading image acquisition device
The colouring information is converted to temperature information by the color of corresponding heat discoloration element according to the color shifting properties of the material, can
The temperature information corresponding to each battery to be numbered respectively, the temperature information after number is transmitted to the heat management of battery
System improves the cell-temperature monitoring to battery pack in order to analyze, show and manage the work such as battery pack temperature in next step
Accuracy improve the safe to use of battery pack so as to realize the carry out high temperature early warning when the temperature is excessively high in battery pack
Property.
In one embodiment, a kind of battery pack temperature monitoring system is provided, including as above described in any one embodiment
Battery temperature measuring system, and the battery pack heat management system that is managed for the temperature to each battery in battery pack
System；Wherein, battery temperature measuring system can be used for measuring the temperature information of each battery in battery pack, which is sent out
It send to the battery thermal management system.
Since battery pack can generally be configured with battery thermal management system, the present embodiment is by the electricity of any one above-mentioned embodiment
Pond temperature measurement system connects battery thermal management system by image processing apparatus, and the temperature information of measurement is exported to battery heat
Management system provides the reference information of temperature management strategy for battery pack.
In one embodiment, provide configured in a kind of battery pack, including battery unit and each battery unit as
Battery temperature measuring system or battery pack temperature monitoring system described in upper arbitrary one embodiment.
The present embodiment is mainly to provide on a kind of its each battery unit to be measured or the battery of monitoring system configured with temperature
Group accurately measures the temperature of each battery of battery pack, to ensure safety that battery pack uses.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.The utility model is several above described embodiment only expresses
Embodiment, the description thereof is more specific and detailed, but therefore can not be interpreted as the limitation to utility model patent range.It answers
It, without departing from the concept of the premise utility, can be with when, it is noted that for those of ordinary skill in the art
Several modifications and improvements are made, these belong to the scope of protection of the utility model.Therefore, the protection model of the utility model patent
Enclosing should be determined by the appended claims.
Claims (10)
1. a kind of battery temperature measuring system, which is characterized in that including：Temperature-sensitive for temperature sensor variation on battery becomes
Color component (100), acquires the image collecting device (200) of the colouring information of the heat discoloration element (100), at colouring information
The image processing apparatus (300) and secondary light source (400) of reason；
The secondary light source (400) includes optical sensor (410) and light source (420)；
The optical sensor (410) is used to detect the light intensity of the battery ambient, and the light source (420) is controlled when light intensity is weaker
Illumination is provided to the heat discoloration element (100) on the battery, so that described image harvester (200) collects temperature-sensitive
The colouring information of photochromic elements (100).
2. battery temperature measuring system according to claim 1, which is characterized in that the heat discoloration element (100)
Quantity is multiple；Each heat discoloration element (100) is correspondingly arranged at respectively on each battery of battery pack.
3. battery temperature measuring system according to claim 1 or 2, which is characterized in that the heat discoloration element (100)
Heat discoloration unit including multiple and different temperature thresholds.
4. battery temperature measuring system according to claim 1, which is characterized in that the heat discoloration element (100) sets
Between the lug of the battery；Described image harvester (200) is mounted on the top of the battery, so that described image is adopted
Acquisition means (200) collect the colouring information of the heat discoloration element (100) between the lug of battery.
5. battery temperature measuring system according to claim 1, which is characterized in that the heat discoloration element (100) is logical
Cross coating, film is pasted or the mode of paster is set on battery.
6. battery temperature measuring system according to claim 1, which is characterized in that heat discoloration element (100) packet
Include irreversible heat discoloration element.
7. battery temperature measuring system according to claim 1, which is characterized in that described image harvester (200) wraps
Include camera (210) and image pick-up card (220)；The position of the camera (210) is according to the heat discoloration element (100)
Position be configured, the camera (210) passes through image pick-up card (220) and image processing apparatus (300) and carries out signal
Connection.
8. battery temperature measuring system according to claim 1, which is characterized in that
The heat discoloration element (100), for converting the temperature information of the battery to colouring information；
Described image harvester (200), the colouring information for acquiring the heat discoloration element (100), is sent to image
Processing unit (300)；
Described image processing unit (300), the colouring information for receiving described image harvester (200) acquisition, according to institute
State the discoloration that colouring information obtains the heat discoloration element (100), the discoloration according to the heat discoloration element (100)
The temperature threshold of situation and heat discoloration element (100) measures the temperature of the battery.
9. a kind of battery pack temperature monitoring system, which is characterized in that including：Such as claim 1 to 8 any one of them battery temperature
Measuring system is spent, and the battery pack thermal management system being managed for the temperature to each battery in battery pack；
The battery temperature measuring system, the temperature information for measuring each battery in the battery pack, by the temperature information
It is sent to the battery thermal management system.
10. a kind of battery pack, which is characterized in that including being configured on battery unit and each battery unit such as claim 1
To any one of 9 battery temperature measuring systems or battery pack temperature monitoring system.
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| CN201820222764.9U CN207883867U (en) | 2018-02-07 | 2018-02-07 | Battery temperature measuring system, battery pack temperature monitoring system and battery pack |
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| CN111089657A (en) * | 2019-03-07 | 2020-05-01 | 杭州视洞科技有限公司 | Non-contact method and system capable of measuring temperature remotely |
| CN110444828A (en) * | 2019-08-21 | 2019-11-12 | 国网江苏省电力有限公司经济技术研究院 | Based on the energy storage thermal runaway method for early warning of lithium phosphate battery safety management system |
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| CN110658191B (en) * | 2019-09-17 | 2022-06-21 | 全球能源互联网欧洲研究院 | Conductor on-line monitoring system and method for cable intermediate joint and manufacturing method thereof |
| CN113847777A (en) * | 2020-06-28 | 2021-12-28 | 青岛海尔电冰箱有限公司 | Thawing method for thawing apparatus, and refrigerating/freezing apparatus |
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| CN112662237B (en) * | 2020-11-26 | 2022-05-27 | 浙江南都电源动力股份有限公司 | Temperature sensing color-changing coating and high-temperature early warning battery module |
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