CN113097437A - Battery with a battery cell - Google Patents
Battery with a battery cell Download PDFInfo
- Publication number
- CN113097437A CN113097437A CN202110349568.4A CN202110349568A CN113097437A CN 113097437 A CN113097437 A CN 113097437A CN 202110349568 A CN202110349568 A CN 202110349568A CN 113097437 A CN113097437 A CN 113097437A
- Authority
- CN
- China
- Prior art keywords
- temperature
- battery
- nano
- temperature detection
- radio frequency
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 115
- 239000003792 electrolyte Substances 0.000 claims description 19
- 238000004146 energy storage Methods 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 229920006280 packaging film Polymers 0.000 claims description 6
- 239000012785 packaging film Substances 0.000 claims description 6
- 238000012983 electrochemical energy storage Methods 0.000 abstract description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 229910052744 lithium Inorganic materials 0.000 description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 239000004642 Polyimide Substances 0.000 description 8
- -1 aluminum ion Chemical class 0.000 description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 229920001721 polyimide Polymers 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000004020 conductor Substances 0.000 description 7
- 239000011787 zinc oxide Substances 0.000 description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 239000007784 solid electrolyte Substances 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000011245 gel electrolyte Substances 0.000 description 2
- 229910003480 inorganic solid Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000005676 thermoelectric effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 230000005679 Peltier effect Effects 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- 230000005678 Seebeck effect Effects 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 230000005680 Thomson effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The application discloses a battery, and relates to the technical field of electrochemical energy storage. The battery comprises a battery core, wherein a temperature detection device is arranged in the battery core and used for detecting the temperature of the battery core and outputting the temperature through radio. Because the temperature detection device can be arranged in the battery core of the battery, the temperature of the battery core can be detected through the temperature detection device, the accuracy of battery temperature detection is improved, and the safety of the battery is improved.
Description
Technical Field
The invention relates to the technical field of electrochemical energy storage, in particular to a battery.
Background
The battery is used as a power supply device of electronic equipment such as mobile phones, electric vehicles, electronic instruments and the like, has important significance, and is more widely applied particularly to lithium batteries. However, since lithium metal in a lithium battery has high reactivity and a commonly used electrolyte is flammable, the lithium battery is easily ignited or exploded when the ambient temperature is excessively high or the lithium battery has an internal failure.
At present, the temperature detection mode of the existing lithium battery usually detects the temperature of the outer surface of the lithium battery and the ambient environment of the lithium battery, so as to determine the temperature of the lithium battery, thus the temperature detection of the lithium battery is not accurate enough, and the safety of the battery is low.
Disclosure of Invention
The embodiment of the invention provides a battery, which aims to solve the problem that the safety of the battery is low due to the fact that the existing temperature detection mode of a lithium battery is not accurate enough.
In a first aspect, an embodiment of the present application provides a battery, where the battery includes an electrical core, a temperature detection device is disposed in the electrical core, and the temperature detection device is configured to detect a temperature of the electrical core and output the temperature by radio.
Optionally, the battery cell includes: positive plate, negative pole piece and electrolyte, temperature-detecting device includes at least one of following:
a first temperature detection device disposed between the positive electrode sheet and the electrolyte;
and the second temperature detection device is arranged between the negative plate and the electrolyte.
Optionally, the temperature detection device is a passive nanometer temperature detection device.
Optionally, the passive nano temperature detection device includes: the temperature detection module, the wireless radio frequency module and the packaging film;
the temperature detection module is electrically connected with the wireless radio frequency module, and both the temperature detection module and the wireless radio frequency module are wrapped in the packaging film;
the temperature detection module is used for detecting the temperature of the battery core and providing electric energy required by the work of the wireless radio frequency module;
the wireless radio frequency module is used for outputting the temperature through radio under the condition that the temperature detection module provides electric energy.
Optionally, the temperature detection module includes: a nano flexible temperature sensor and a pyroelectric material;
the thermoelectric material is arranged on the surface of the nano flexible temperature sensor and is electrically connected with the nano flexible temperature sensor and the wireless radio frequency module; the thermoelectric material is used for converting the heat energy of the battery cell into electric energy and supplying power to the nano flexible temperature sensor and the wireless radio frequency module;
the nanometer flexible temperature sensor is used for detecting the temperature of the battery core and providing electric energy required by the work of the wireless radio frequency module.
Optionally, the temperature detection module includes: a nano-generator and a nano-flexible temperature sensor;
the nanometer generator is electrically connected with the first end of the nanometer flexible temperature sensor and the first end of the wireless radio frequency module respectively; the nano generator is used for converting the heat energy or the mechanical energy of the battery core into electric energy and supplying power to the nano flexible temperature sensor and the wireless radio frequency module;
the second end of the nanometer flexible temperature sensor is electrically connected with the second end of the wireless radio frequency module, and the nanometer flexible temperature sensor is used for acquiring the temperature of the battery core and transmitting the temperature to the wireless radio frequency module.
Optionally, the temperature detection module further includes: the energy storage unit is connected with the rectifying unit;
the nano generator is electrically connected with a first end of the rectifying unit, a second end of the rectifying unit is electrically connected with a first end of the energy storage unit, and the rectifying unit is used for converting alternating current of the nano generator into direct current with a preset voltage value;
the second end of the energy storage unit is electrically connected with the first end of the nanometer flexible temperature sensor and the first end of the wireless radio frequency module respectively, and the energy storage unit is used for providing the direct current for the nanometer flexible temperature sensor and the wireless radio frequency module.
Optionally, the thickness of the nano flexible temperature sensor is 1 to 100 micrometers, and the thickness of the nano generator is 1 to 100 micrometers.
Optionally, the thickness of the nano flexible temperature sensor is 1 to 30 micrometers, and the thickness of the nano generator is 1 to 30 micrometers.
Optionally, the radio frequency module includes: a signal conversion unit and a signal transmitting unit;
the first end of the signal conversion unit is electrically connected with the temperature detection module, and the signal conversion unit is used for receiving the analog signal corresponding to the temperature of the temperature detection module and converting the analog signal corresponding to the temperature into a digital signal corresponding to the temperature;
the signal transmitting unit is electrically connected with the second end of the signal conversion unit and is used for outputting the digital signal corresponding to the temperature through radio.
In the embodiment of the application, the temperature detection device can be arranged in the battery core of the battery, so that the temperature of the battery core can be detected through the temperature detection device, the accuracy of battery temperature detection is improved, and the safety of the battery is improved.
Drawings
Fig. 1 is a schematic structural diagram of a battery provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a passive nano temperature detection device before packaging according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a packaged passive nano temperature detection device according to an embodiment of the present application;
fig. 4 is a schematic view of a working flow of a passive nano temperature detection device according to an embodiment of the present disclosure;
fig. 5 is a third schematic structural diagram of a passive nano temperature detection device according to an embodiment of the present application;
fig. 6 is a second schematic view of a working process of the passive nano temperature detection device according to the embodiment of the present application;
fig. 7 is a fourth schematic structural diagram of a passive nano temperature detection device according to an embodiment of the present application;
fig. 8 is a third schematic view of a working flow of the passive nano temperature detection device according to the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The following describes the battery provided in the embodiments of the present application in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery provided in an embodiment of the present application. As shown in fig. 1, the battery includes a battery cell 100, a temperature detection device 200 is disposed in the battery cell 100, and the temperature detection device 200 is configured to detect a temperature of the battery cell 100 and output the temperature by radio.
Specifically, the above-mentioned battery may include, but is not limited to: lithium ion secondary batteries, sodium ion secondary batteries, potassium ion secondary batteries, magnesium ion secondary batteries, aluminum ion secondary batteries, zinc ion secondary batteries, all-solid batteries, quasi-solid batteries, gel batteries, and the like. The structure of the battery cell 100 may be specifically configured according to the actual needs of the corresponding type of battery, for example, the structure may be in a winding form or a lamination form, or may be in other battery cell assembly forms, and the present application is not particularly limited. The temperature detection device 200 has the characteristics of small volume, light weight, high temperature resistance, strong flexibility, high sensitivity and the like, and can be embedded into the battery cores 100 in different forms without influencing the performance and structure of the battery, so that the temperature detection device 200 has higher universality and safety.
It should be noted that there may be one or more temperature detection devices 200, and when there are a plurality of temperature detection devices 200, a plurality of temperature detection devices 200 may be disposed at different positions of the battery cell 100 according to detection requirements, so as to detect temperature changes of different positions of the battery cell 100.
In this embodiment, by providing the temperature detection device 200 in the battery cell 100 of the battery, the temperature of the battery cell 100 can be detected by the temperature detection device 200, so that the accuracy of battery temperature detection is improved, and the safety of the battery is improved.
Further, with continued reference to fig. 1, the battery cell 100 includes: the positive electrode tab 110, the negative electrode tab 120, and the electrolyte 130, the temperature detection device 200 includes at least one of:
a first temperature detection device disposed between the positive electrode tab 110 and the electrolyte 130;
and a second temperature detecting means disposed between the negative electrode tab 120 and the electrolyte 130.
Specifically, the positive electrode sheet 110 is obtained by applying a positive electrode material to an aluminum foil and then press-molding the aluminum foil. The negative electrode sheet 120 is obtained by applying a negative electrode material to a copper foil and then press-molding the coated negative electrode material. The above electrolyte 130 includes, but is not limited to: inorganic solid electrolytes, polymer solid electrolytes, composite solid electrolytes, gel electrolytes, and the like. The electrolyte 130 described later may represent any one of an inorganic solid electrolyte, a polymer solid electrolyte, a composite solid electrolyte, a gel electrolyte, and the like.
In an embodiment, the temperature detection device 200 may include a first temperature detection device disposed between the positive electrode tab 110 and the electrolyte 130, and/or a second temperature detection device disposed between the negative electrode tab 120 and the electrolyte 130. The first temperature detection device and the second temperature detection device herein may be one temperature detection device or a plurality of temperature detection devices, and the present application is not particularly limited. Because the temperature detection device 200 can be disposed at any position between the positive and negative electrode plates 120 and the electrolyte 130, the temperature of any position of the battery core 100 can be detected, thereby effectively monitoring the temperature inside the battery, improving the understanding and management of the state of the battery, and further improving the safety performance of the battery.
Further, the temperature detection device 200 is a passive nano temperature detection device.
In an embodiment, a passive nanometer temperature detection device may be used as the temperature detection device 200, and since the passive nanometer temperature detection device does not need an external power supply to provide a working power supply for the passive nanometer temperature detection device, the temperature detection device 200 does not need to establish a wired connection with the outside of the battery, thereby ensuring the independence of the internal safety detection of the battery and effectively avoiding the influence of the wired connection with the outside of the battery on the working state of the battery. In addition, each module in the passive nanometer temperature detection device is realized by adopting a nanometer technology, so that the volume of the temperature detection device 200 is small, and even if a plurality of temperature detection devices 200 are arranged in the battery cell 100, the original structure of the battery is not influenced.
Further, the passive nano temperature detection device includes: a temperature detection module 210, a wireless radio frequency module 220 and an encapsulation film 230;
the temperature detection module 210 is electrically connected with the radio frequency module 220, and both the temperature detection module 210 and the radio frequency module 220 are wrapped in the packaging film 230;
the temperature detection module 210 is configured to detect a temperature of the battery cell 100 and provide electric energy required by the operation of the wireless radio frequency module 220;
the wireless rf module 220 is used for outputting the temperature by radio when the temperature detection module 210 provides power.
Specifically, the temperature detection module 210 and the rf module 220 do not need a power supply outside the battery to provide a working power supply for the battery, but convert thermal energy or mechanical energy generated inside the battery into electrical energy to provide a working power supply for the battery.
The wireless radio frequency module 220 may operate by using the electric energy provided by the temperature detection module 210, and wirelessly transmit the temperature of the battery core 100 acquired from the temperature detection module 210, so that the temperature signal inside the battery may be transmitted to the outside of the battery, and the temperature inside the battery may be monitored in real time outside the battery.
The material of the encapsulation film 230 may be a high temperature resistant and corrosion resistant polymer material such as poly-ether-ether-ketone (PEEK), Polysulfone (PSF), Polyethersulfone (PES), Polyphenylene Sulfide (PPS), or Polyimide (PI).
In one embodiment, the temperature detection module 210 and the rf module 220 may be packaged by PI tape. Referring to fig. 2 and 3 in detail, fig. 2 is a schematic structural diagram of a passive nano temperature detection device before being packaged by a PI tape, and fig. 3 is a schematic structural diagram of a passive nano temperature detection device after being packaged by a PI tape. When the temperature detection module 210 and the radio frequency module 220 are packaged by using the PI tapes, the bottom end surfaces of the temperature detection module 210 and the radio frequency module 220 may be first fixed to the first PI tape, and then the top end surfaces of the temperature detection module 210 and the radio frequency module 220 may be fixed to each other by using the second PI tape, as shown in fig. 3. Of course, in another embodiment, the polymer coating may be directly coated on the entire outer surfaces of the temperature detection module 210 and the radio frequency module 220, which is not particularly limited in this application.
In this way, the temperature detection module 210 and the rf module 220 are both wrapped in the packaging film 230, so that the temperature detection module 210 and the rf module 220 are not corroded by corrosive substances in the battery.
Further, the temperature detection module 210 includes: a nano-flexible temperature sensor 211 and a pyroelectric material 212;
the thermoelectric material 212 is disposed on the surface of the nano flexible temperature sensor 211, and is electrically connected to the nano flexible temperature sensor 211 and the wireless radio frequency module 220; the thermoelectric material 212 is used for converting the heat energy of the battery cell 100 into electric energy to supply power to the nano flexible temperature sensor 211 and the wireless radio frequency module 220;
the nano flexible temperature sensor 211 is configured to detect a temperature of the battery cell 100 and provide electric energy required by the operation of the wireless radio frequency module 220.
Specifically, the aforementioned nano-flexible temperature sensor 211 may include, but is not limited to: thermocouple type temperature sensors, resistance type temperature sensors, digital temperature sensors, and the like. The working principle of the thermocouple type temperature sensor is as follows: when two ends of two different conductors or semiconductors are connected with each other TO form a loop, as long as the temperatures of the two connections are different, one end is T and called as a working end or a hot end, and the other end is TO and called as a free end or a cold end, current is generated in the loop. This phenomenon of electromotive force generation due to temperature difference is called seebeck effect. The effects associated with seebeck are two: first, when current flows through the junction of two different conductors, heat is absorbed or released (depending on the direction of the current) here, known as the peltier effect; secondly, when a current flows through a conductor in which a temperature gradient exists, the conductor absorbs or gives off heat (depending on the direction of the current with respect to the temperature gradient), known as the thomson effect. The combination of two different conductors or semiconductors that make up the loop is called a thermocouple. The working principle of the resistance-type temperature sensor is as follows: the resistance value of the conductor changes along with the temperature change, the temperature of the measured object is calculated by measuring the resistance value of the conductor, and the sensor formed by utilizing the principle is a resistance temperature sensor which is mainly used for measuring the temperature within the temperature range of-200 ℃ to 500 ℃. The working principle of the digital temperature sensor is as follows: the PTAT structure is adopted, the output signal of the PTAT is modulated into a digital signal through a duty ratio comparator, and the relationship between the duty ratio and the temperature is as follows: and DC 0.320.0047 × t, where t is the current temperature of the measured object in degrees celsius.
In one embodiment, the passive nano temperature sensing device may be powered by generating electrical energy through the thermoelectric material 212 disposed on the surface of the nano flexible temperature sensor 211. Referring to fig. 4, fig. 4 is a schematic view of a working flow of a passive nano temperature detection device according to an embodiment of the present application. As shown in fig. 4, when the temperature of the battery cell 100 changes, the thermoelectric material 212 generates a thermoelectric effect to generate electric energy, and then supplies power to the nano flexible temperature sensor 211 and the wireless radio frequency module 220, at this time, the nano flexible temperature sensor 211 can detect the temperature change of the battery cell 100, output a temperature signal, and the wireless radio frequency module 220 can wirelessly output the temperature signal, thereby monitoring the internal temperature of the battery.
Referring to fig. 5, fig. 5 is a third schematic structural diagram of a passive nano temperature detection device according to an embodiment of the present application. As shown in fig. 5, the temperature detection module 210 includes: a nano-generator 213 and a nano-flexible temperature sensor 211;
the nanometer generator 213 is electrically connected to the first end of the nanometer flexible temperature sensor 211 and the first end of the wireless rf module 220, respectively; the nano generator 213 is configured to convert the thermal energy or the mechanical energy of the battery cell 100 into electrical energy, and supply power to the nano flexible temperature sensor 211 and the wireless radio frequency module 220;
the second end of the nano flexible temperature sensor 211 is electrically connected to the second end of the radio frequency module 220, and the nano flexible temperature sensor 211 is configured to acquire the temperature of the battery cell 100 and transmit the temperature to the radio frequency module 220.
Specifically, the nano-generator 213 includes, but is not limited to: pyroelectric nano-generators, friction type nano-generators, piezoelectric type nano-generators and the like. The working principle of the pyroelectric nano generator is as follows: the pyroelectric effect of the nano material is utilized to convert the heat energy into the electric energy. The heat is accompanied by a change in the battery cycle, or any chemical reaction within the cell. The thermoelectric effect refers to a spontaneous polarization phenomenon generated in an anisotropic solid material due to temperature fluctuation, and the pyroelectric nano-generator can collect waste heat energy in the environment. The working principle of the friction type nanometer generator is as follows: the nylon and the polytetrafluoroethylene are adopted, the polytetrafluoroethylene obtains electrons when the nylon and the polytetrafluoroethylene are in contact, when the nylon and the polytetrafluoroethylene slide, the parts of the nylon and the polytetrafluoroethylene, which are away from a contact surface, need to keep electric neutrality, and the electrons flow to the nylon from the polytetrafluoroethylene, so that a downward current is generated in an external circuit; when the two are in contact with each other, the surfaces which are already in contact keep electric neutrality, and the electrons which flow before need to flow back to keep the electric neutrality, so that upward current is realized in an external circuit. The working principle of the piezoelectric nano generator is as follows: since zinc oxide has the double effects of semiconductor and piezoelectricity, the schottky barrier ensures the capability of zinc oxide of outputting unidirectional current outwards, because when the semiconductor is in contact with metal, the electron work function of zinc oxide is smaller than that of a platinum electrode, electrons flow into a probe (namely the platinum electrode) from zinc oxide, the zinc oxide shows positive electricity, a form similar to a PN junction is formed, and when an external electric field is in a direction from the platinum electrode to the zinc oxide, internal electrons can flow to output current. When the zinc oxide wire is bent, a potential is generated on both sides, and oxygen ions and zinc ions move relative to each other, so that negative electricity is displayed on a compressed place and positive electricity is displayed on a stretched place, and the platinum probe can be regarded as zero potential. When only the probe is placed on the compressed side, the generated potential difference shows positive electricity, which is equivalent to that PN is conducted, and current is generated in an external circuit. On the contrary, the current is smaller and cannot generate voltage output, which is equivalent to the reverse saturation current of the PN junction.
In one embodiment, electrical energy may be generated by the nanogenerator 213 to power the passive nanoscale temperature sensing device. Referring to fig. 6, fig. 6 is a second schematic view of a working flow of the passive nano temperature detection device according to the embodiment of the present application. When the temperature of the battery core 100 changes, the nano generator 213 can convert the internal heat energy or mechanical energy (generated by the volume expansion and contraction of the battery core 100) of the battery core 100 into electric energy, and then supply power to the nano flexible temperature sensor 211 and the wireless radio frequency module 220, at this moment, the nano flexible temperature sensor 211 can detect the temperature change of the battery core 100, output a temperature signal, and the wireless radio frequency module 220 can wirelessly output the temperature signal, thereby monitoring the internal temperature of the battery.
Further, referring to fig. 7, fig. 7 is a fourth schematic structural diagram of the passive nano temperature detection device according to the embodiment of the present application. As shown in fig. 7, the temperature detection module 210 further includes: a rectifying unit 214 and an energy storage unit 215;
the nano generator 213 is electrically connected to a first end of the rectifying unit 214, a second end of the rectifying unit 214 is electrically connected to a first end of the energy storage unit 215, and the rectifying unit 214 is configured to convert the ac power of the nano generator 213 into dc power with a preset voltage value;
the second end of the energy storage unit 215 is electrically connected to the first end of the nano flexible temperature sensor 211 and the first end of the wireless rf module 220, respectively, and the energy storage unit 215 is configured to provide direct current to the nano flexible temperature sensor 211 and the wireless rf module 220.
Specifically, the rectifying unit 214 may be an integrated low-loss full-wave bridge rectifying circuit. The energy storage unit 215 may be a capacitor.
In one embodiment, electrical energy may be generated by the nanogenerator 213 to power the passive nanoscale temperature sensing device. Referring to fig. 8, fig. 8 is a third schematic view of a working flow of the passive nano temperature detection device according to the embodiment of the present application. When the temperature detection device 200 is in a standby state and a small amount of heat energy exists in the battery cell 100, the nano-generator 213 may convert the heat energy into electric energy, and further transmit the generated electric energy to the rectifying unit 214, and the generated electric energy is rectified by the rectifying unit 214 to output a dc power with a preset voltage value and then input to the energy storage unit 215 for storage. The energy storage unit 215 supplies power to the nano flexible temperature sensor 211 and the wireless radio frequency module 220, at this time, the nano flexible temperature sensor 211 can detect the temperature change of the battery core 100, output a temperature signal, and the wireless radio frequency module 220 can wirelessly output the temperature signal, so that the internal temperature of the battery can be monitored.
Further, the thickness of the nano flexible temperature sensor 211 is 1 to 100 micrometers, and the thickness of the nano generator 213 is 1 to 100 micrometers.
Specifically, the nano flexible temperature sensor 211 may have any shape, for example, a rectangular parallelepiped, a cube, a cylinder, or the like. The thickness of the nano flexible temperature sensor 211 is 1 to 100 micrometers, and the thickness of the nano generator 213 is 1 to 100 micrometers, so that the temperature detection device 200 comprising the nano flexible temperature sensor 211 and the nano generator 213 can be better arranged between the electrode plate and the electrolyte 130, the structure of the electrode plate and the electrolyte 130 cannot be affected by the thickness of the temperature detection device 200, and the size of the battery is further guaranteed not to be affected.
Further, the thickness of the nano flexible temperature sensor 211 is 1 to 30 micrometers, and the thickness of the nano generator 213 is 1 to 30 micrometers.
Thus, by further reducing the thickness of the nano flexible temperature sensor 211 and the nano generator 213, the temperature detection device 200 including the nano flexible temperature sensor 211 and the nano generator 213 can be more flexibly arranged between the electrode plate and the electrolyte 130, the influence on the structure of the electrode plate and the electrolyte 130 due to the thickness of the temperature detection device 200 is avoided, and the size of the battery is further ensured not to be influenced.
Further, with continued reference to fig. 8, the radio frequency module 220 includes: a signal conversion unit 221 and a signal transmission unit 222;
the first end of the signal conversion unit 221 is electrically connected to the temperature detection module 210, and the signal conversion unit 221 is configured to receive an analog signal corresponding to the temperature of the temperature detection module 210 and convert the analog signal corresponding to the temperature into a digital signal corresponding to the temperature;
the signal transmitting unit 222 is electrically connected to a second end of the signal converting unit 221, and the signal transmitting unit 222 is configured to output a digital signal corresponding to the temperature by radio.
Specifically, the signal conversion unit 221 may quantize the temperature analog signal in the temperature detection module 210 into a temperature digital signal by Pulse Code Modulation (PCM). Specifically, 8-bit encoding may be adopted to quantize the analog signal into a digital signal with 2^8 ^ 256 orders of magnitude, or 24-bit or 30-bit encoding may also be adopted, and the present application is not limited specifically. The signal transmitting unit 222 maps the coded bit sequence into digital symbols, and the signal transmitting module converts the digital symbols into radio signals to be transmitted, and finally reaches the outside of the battery.
In this embodiment, the signal conversion unit 221 converts the analog signal corresponding to the temperature into the digital signal corresponding to the temperature, so as to achieve faster and more accurate data transmission, which is beneficial to improving the efficiency and accuracy of data processing. Meanwhile, the temperature may be transmitted in the form of a radio signal through the signal transmitting unit 222, so that a management system outside the battery may receive and decode the radio signal, and store and display the decoded temperature signal. The management system can also be connected with the Internet, so that the battery can be conveniently analyzed and processed remotely.
When the battery is in a resting state or a charging and discharging state and the temperature in the battery core 100 changes, the temperature detection device 200 detects the temperature change to generate a changed temperature analog signal, and the signal is converted into a digital signal and is recorded and displayed in real time by an external management system. Thus, the temperature change data in the battery cell 100 and the corresponding battery cycle electrochemical data can be recorded in real time and accurately during the process of placing or charging and discharging the battery.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods of the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The battery is characterized by comprising an electric core, wherein a temperature detection device is arranged in the electric core and used for detecting the temperature of the electric core and outputting the temperature through radio.
2. The battery of claim 1, wherein the cell comprises: positive plate, negative pole piece and electrolyte, temperature-detecting device includes at least one of following:
a first temperature detection device disposed between the positive electrode sheet and the electrolyte;
and the second temperature detection device is arranged between the negative plate and the electrolyte.
3. The battery of claim 1, wherein the temperature sensing device is a passive nano temperature sensing device.
4. The battery of claim 3, wherein the passive nano-temperature detection device comprises: the temperature detection module, the wireless radio frequency module and the packaging film;
the temperature detection module is electrically connected with the wireless radio frequency module, and both the temperature detection module and the wireless radio frequency module are wrapped in the packaging film;
the temperature detection module is used for detecting the temperature of the battery core and providing electric energy required by the work of the wireless radio frequency module;
the wireless radio frequency module is used for outputting the temperature through radio under the condition that the temperature detection module provides electric energy.
5. The battery according to claim 4, wherein the temperature detection module comprises: a nano flexible temperature sensor and a pyroelectric material;
the thermoelectric material is arranged on the surface of the nano flexible temperature sensor and is electrically connected with the nano flexible temperature sensor and the wireless radio frequency module; the thermoelectric material is used for converting the heat energy of the battery cell into electric energy and supplying power to the nano flexible temperature sensor and the wireless radio frequency module;
the nanometer flexible temperature sensor is used for detecting the temperature of the battery core and providing electric energy required by the work of the wireless radio frequency module.
6. The battery according to claim 4, wherein the temperature detection module comprises: a nano-generator and a nano-flexible temperature sensor;
the nanometer generator is electrically connected with the first end of the nanometer flexible temperature sensor and the first end of the wireless radio frequency module respectively; the nano generator is used for converting the heat energy or the mechanical energy of the battery core into electric energy and supplying power to the nano flexible temperature sensor and the wireless radio frequency module;
the second end of the nanometer flexible temperature sensor is electrically connected with the second end of the wireless radio frequency module, and the nanometer flexible temperature sensor is used for acquiring the temperature of the battery core and transmitting the temperature to the wireless radio frequency module.
7. The battery of claim 6, wherein the temperature detection module further comprises: the energy storage unit is connected with the rectifying unit;
the nano generator is electrically connected with a first end of the rectifying unit, a second end of the rectifying unit is electrically connected with a first end of the energy storage unit, and the rectifying unit is used for converting alternating current of the nano generator into direct current with a preset voltage value;
the second end of the energy storage unit is electrically connected with the first end of the nanometer flexible temperature sensor and the first end of the wireless radio frequency module respectively, and the energy storage unit is used for providing the direct current for the nanometer flexible temperature sensor and the wireless radio frequency module.
8. The battery of claim 6, wherein the nano-flexible temperature sensor has a thickness of 1 to 100 microns and the nano-generator has a thickness of 1 to 100 microns.
9. The battery of claim 8, wherein the nano-flexible temperature sensor has a thickness of 1 to 30 microns and the nano-generator has a thickness of 1 to 30 microns.
10. The battery according to any of claims 4-7, wherein the radio frequency module comprises: a signal conversion unit and a signal transmitting unit;
the first end of the signal conversion unit is electrically connected with the temperature detection module, and the signal conversion unit is used for receiving the analog signal corresponding to the temperature of the temperature detection module and converting the analog signal corresponding to the temperature into a digital signal corresponding to the temperature;
the signal transmitting unit is electrically connected with the second end of the signal conversion unit and is used for outputting the digital signal corresponding to the temperature through radio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349568.4A CN113097437A (en) | 2021-03-31 | 2021-03-31 | Battery with a battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349568.4A CN113097437A (en) | 2021-03-31 | 2021-03-31 | Battery with a battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113097437A true CN113097437A (en) | 2021-07-09 |
Family
ID=76672424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110349568.4A Pending CN113097437A (en) | 2021-03-31 | 2021-03-31 | Battery with a battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113097437A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116231119A (en) * | 2023-03-29 | 2023-06-06 | 深圳市南霸科技有限公司 | Control method and device for sodium-lithium battery pack |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204558611U (en) * | 2015-03-17 | 2015-08-12 | 北汽福田汽车股份有限公司 | A kind of cell apparatus for internal temperature of battery test |
| CN105374926A (en) * | 2014-08-06 | 2016-03-02 | 中国科学院化学研究所 | Flexible multifunctional sensor, preparation method and application thereof |
| CN207353413U (en) * | 2017-09-29 | 2018-05-11 | 孚能集团有限公司 | A kind of electric core structure of lithium battery |
| CN109818091A (en) * | 2019-01-25 | 2019-05-28 | 深圳瑞隆新能源科技有限公司 | A kind of lithium ion battery |
| CN113078380A (en) * | 2021-03-30 | 2021-07-06 | 珠海冠宇电池股份有限公司 | Single battery and battery module |
-
2021
- 2021-03-31 CN CN202110349568.4A patent/CN113097437A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374926A (en) * | 2014-08-06 | 2016-03-02 | 中国科学院化学研究所 | Flexible multifunctional sensor, preparation method and application thereof |
| CN204558611U (en) * | 2015-03-17 | 2015-08-12 | 北汽福田汽车股份有限公司 | A kind of cell apparatus for internal temperature of battery test |
| CN207353413U (en) * | 2017-09-29 | 2018-05-11 | 孚能集团有限公司 | A kind of electric core structure of lithium battery |
| CN109818091A (en) * | 2019-01-25 | 2019-05-28 | 深圳瑞隆新能源科技有限公司 | A kind of lithium ion battery |
| CN113078380A (en) * | 2021-03-30 | 2021-07-06 | 珠海冠宇电池股份有限公司 | Single battery and battery module |
Non-Patent Citations (2)
| Title |
|---|
| 唐元洪: "《纳米材料导论》", 30 June 2011 * |
| 栾桂冬: "《传感器及其应用 第3版》" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116231119A (en) * | 2023-03-29 | 2023-06-06 | 深圳市南霸科技有限公司 | Control method and device for sodium-lithium battery pack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mutyala et al. | In-situ temperature measurement in lithium ion battery by transferable flexible thin film thermocouples | |
| CN103457005B (en) | There is the secondary battery unit of pressure-sensitive thin film sensor | |
| JP5067302B2 (en) | Charging depth measuring mechanism and measuring method, and secondary battery equipped with the measuring mechanism | |
| TWI259906B (en) | A condenser residual life prediction method, a temperature detecting construction and an electronic machine | |
| JP6860126B2 (en) | Battery cell capable of measuring internal temperature | |
| Mohtat et al. | Differential expansion and voltage model for li-ion batteries at practical charging rates | |
| Martiny et al. | Development of an all kapton-based thin-film thermocouple matrix for in situ temperature measurement in a lithium ion pouch cell | |
| CN103354963A (en) | Secondary battery cell, battery pack and power consumption device | |
| WO2014069437A1 (en) | Device for estimating battery life and system for estimating battery life | |
| Leland et al. | Energy scavenging power sources for household electrical monitoring | |
| CN102265449B (en) | Immersion sensor to protect battery | |
| JPWO2011135702A1 (en) | Battery temperature measuring device, battery temperature measuring method, battery manufacturing method | |
| CN113097437A (en) | Battery with a battery cell | |
| US8082116B2 (en) | Method for estimating life status of lithium battery | |
| JP2016527508A (en) | System and method for determining insulation resistance of battery pack | |
| Hossain Ahmed et al. | Effects of temperature on internal resistances of lithium-ion batteries | |
| Lee et al. | Lithium-ion battery module temperature monitoring by using planer home-made micro thermocouples | |
| CN103542955B (en) | Lithium ion battery temperature inductor | |
| JP6531388B2 (en) | Non-aqueous electrolyte secondary battery and method of evaluating gas generation amount in battery using the battery. | |
| CN113097587A (en) | Battery with a battery cell | |
| JP2016133413A (en) | Charge-rate estimation apparatus | |
| KR20180129290A (en) | Thermoelement electric energy harvester for power cable | |
| CN111579105A (en) | Self-powered cable temperature measuring device | |
| CN113097588A (en) | Battery with a battery cell | |
| CN202676321U (en) | Lithium ion battery temperature sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |