CN112436213A - Overheat protection battery - Google Patents

Overheat protection battery Download PDF

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Publication number
CN112436213A
CN112436213A CN202011292080.4A CN202011292080A CN112436213A CN 112436213 A CN112436213 A CN 112436213A CN 202011292080 A CN202011292080 A CN 202011292080A CN 112436213 A CN112436213 A CN 112436213A
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CN
China
Prior art keywords
battery
electrolyte layer
overheat protection
liquid
cavity
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.)
Withdrawn
Application number
CN202011292080.4A
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Chinese (zh)
Inventor
夏帅虎
殷国辉
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202011292080.4A priority Critical patent/CN112436213A/en
Publication of CN112436213A publication Critical patent/CN112436213A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4264—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing with capacitors
    • 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
    • H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6562—Gases with free flow by convection only
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
    • H01M6/5038—Heating or cooling of cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
    • H01M6/5044—Cells or batteries structurally combined with cell condition indicating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

The invention discloses an overheat protection battery which comprises a shell, an anode block and a cathode block, wherein the anode block is connected with an electrolyte layer and a liquid cavity which are arranged in the shell, cooling liquid is filled in the liquid cavity, the bottom of the electrolyte layer and the cathode block are respectively and fixedly connected with a conductive rod, the conductive parts of the two conductive rods are abutted, the liquid cavity is communicated with an annular heat dissipation cavity, the heat dissipation cavity is distributed on the outer side of the electrolyte layer and is communicated with the anode block, the conductive rods communicated with the electrolyte layer are connected with a voltage division capacitor in parallel, and the voltage division capacitor is connected with a prompting lamp in series. Has the advantages that: the temperature in the battery is reduced by the characteristic of heat absorption of liquid evaporation, so that the problem that the service life of the battery is damaged at high temperature is solved, the function of automatically disconnecting the battery is realized by the deformation characteristic of the memory material in an overheat state, and the circuit is prevented from being burnt out.

Description

Overheat protection battery
Technical Field
The invention relates to the technical field of batteries, in particular to a battery with overheat protection.
Background
The battery refers to a part of space of a cup, a tank or other container or a composite container which contains electrolyte solution and metal electrodes to generate current, a device which can convert chemical energy into electric energy, and has a positive electrode and a negative electrode. The battery is used as an energy source, so that the current which has stable voltage and current, supplies power stably for a long time and is slightly influenced by the outside can be obtained.
In the prior art, batteries are usually used at normal ambient temperature, and under an extremely hot condition, the batteries are easy to overheat during use, so that the service life is influenced.
Disclosure of Invention
The invention aims to solve the problem that the service life of a battery is short when the battery is used at an extreme temperature in the prior art, and provides an overheat protection battery.
In order to achieve the purpose, the invention adopts the following technical scheme: an overheating protection battery comprises a shell, a positive electrode block and a negative electrode plate, wherein the positive electrode block is connected with an electrolyte layer and a liquid cavity which are arranged inside the shell, cooling liquid is filled in the liquid cavity, the bottom of the electrolyte layer and the negative electrode plate are respectively and fixedly connected with a conductive rod, the conductive parts of the two conductive rods are abutted against each other, the liquid cavity is communicated with an annular heat dissipation cavity, and the heat dissipation cavity is distributed on the outer side of the electrolyte layer and is communicated with the positive electrode block;
in the battery with the overheat protection function, the conducting rod communicated with the electrolyte layer is connected with a voltage division capacitor in parallel, the voltage division capacitor is connected with a prompting lamp in series, the prompting lamp is opposite to the negative plate and adopts a flashing structure, and light emission of the prompting lamp is green light.
In the battery with the overheat protection function, the negative plate is embedded with the photoresistor, the position of the photoresistor is right opposite to the prompting lamp, the cooling liquid is made of a green opaque material, and the boiling point of the cooling liquid is set to be 70 ℃.
In the battery with the overheat protection function, the liquid storage cavity is respectively provided with a pressure relief hole and an exhaust hole, the pressure relief hole is internally and hermetically connected with a pressure relief valve, the exhaust hole is internally and hermetically connected with an electromagnetic valve, and the electromagnetic valve is electrically connected with the photoresistor.
In the battery with overheat protection, the two conducting rods are respectively and fixedly connected with a torsion spring which is made of memory metal material,
compared with the prior art, the invention has the advantages that:
1. in the invention, the heat dissipation cavity is arranged in the shell of the battery, and the cooling liquid with a lower boiling point is arranged in the liquid cavity below the heat dissipation cavity, so that when the battery is used at a higher temperature, the temperature in the battery is reduced by the characteristic of heat absorption through evaporation of the liquid, and the problem that the service life of the battery is damaged at a high temperature is solved;
2. the liquid cavity is respectively provided with an exhaust hole and a pressure release hole, wherein the pressure application hole is hermetically connected with a pressure release valve, and when the air pressure is higher, the gas generated after the cooling liquid in the liquid cavity is evaporated can be released through the opening of the pressure release valve, so that the explosion problem caused by the overlarge air pressure of the liquid cavity is avoided;
3. the electrolyte layer is connected with the negative plate through the two conducting rods, wherein when the battery is in an instant short circuit, liquid cannot be evaporated in a short time, so that the internal temperature of the battery can be instantly increased to a very high position, and at the moment, the torsion spring made of the memory material connected with the conducting rods deforms, so that the two conducting rods rotate in opposite directions, the automatic disconnection operation is performed, and the problem that the battery is damaged or an external circuit is burnt out is solved;
4. the coolant liquid in the liquid chamber adopts green opaque nature, and the partial pressure electric capacity that is connected with the conducting rod is established ties and is had the warning light, when normal use, partial pressure electric capacity opens circuit the warning light, and when battery life was about to end, the output voltage of battery reduced, the internal resistance increases, consequently partial pressure electric capacity both ends voltage will change, make partial pressure electric capacity place branch road have the electric current to pass through, make the warning light outwards jet out illumination, the suggestion external battery electric quantity is used up on the one hand, on the other hand will open the exhaust hole, after the cooling effect through natural wind current reduced the internal resistance increase, the problem of battery temperature rising.
Drawings
Fig. 1 is a schematic structural diagram of an overheat protection battery according to the present invention;
fig. 2 is an enlarged schematic view of a portion a of an overheat protection battery according to the present invention.
In the figure: the device comprises a shell 1, a positive electrode block 2, a negative electrode plate 3, an electrolyte layer 4, a liquid cavity 5, a conductive rod 6, a heat dissipation cavity 7, a voltage division capacitor 8, a prompting lamp 9, a torsion spring 10, a pressure release hole 11, an exhaust hole 12 and a photoresistor 13.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1-2, an overheat protection battery comprises a shell 1, an anode block 2 and a cathode block 3, wherein the anode block 2 is connected with an electrolyte layer 4 and a liquid cavity 5 which are arranged inside the shell 1, cooling liquid is filled in the liquid cavity 5, the bottom of the electrolyte layer 4 and the cathode block 3 are respectively and fixedly connected with a conducting rod 6, the conducting parts of the two conducting rods 6 are abutted, the liquid cavity 5 is communicated with an annular heat dissipation cavity 7, and the heat dissipation cavity 7 is distributed outside the electrolyte layer 4 and is communicated with the anode block 2;
the conducting rod 6 that communicates with electrolyte layer 4 is parallelly connected with voltage-dividing capacitor 8, voltage-dividing capacitor establishes ties has warning light 9, warning light 9 is just to negative plate 3 and adopts the flash of light structure, the light emission of warning light 9 is the green glow, it is equipped with photo resistor 13 to inlay in the negative plate 3, photo resistor position is just right with warning light 9, cooling liquid adopts green opaque material and boiling point sets up to 70 ℃, make cooling liquid can absorb the heat when ambient temperature is higher, thereby protect electrolyte layer 4, make its temperature be unlikely to too high, photo resistor 13 has the effect of absorbing illumination, and self resistance will descend to the resistance size of normal resistance from the high state of resistance under the illumination effect.
The liquid storage cavity 5 is respectively provided with a pressure relief hole 11 and an exhaust hole 12, the pressure relief hole 11 is internally and hermetically connected with a pressure relief valve, the pressure relief valve is automatically opened when the air pressure in the liquid storage cavity 5 is higher, the overpressure gas is exhausted, and therefore the explosion problem caused by the overlarge air pressure is avoided, the exhaust hole 12 is internally and hermetically connected with an electromagnetic valve, the electromagnetic valve is electrically connected with a photosensitive resistor 13, the two conducting rods 6 are respectively and fixedly connected with a torsional spring 13, the torsional spring 13 is made of a memory metal material, the two torsional springs 13 enable the conducting parts of the two conducting rods 6 to be mutually connected in a normal state, and when the temperature exceeds the deformation temperature of the memory metal, the two torsional springs 13 rotate in opposite directions, so that the conducting parts of the two conducting rods 6 are mutually separated, and the effect of disconnecting the battery.
In the use process of the invention, under the normal use state of the battery, the torsion spring 10 connected with the two conducting rods 6 makes the two conducting rods have the tendency of opposite rotation, so that the two conducting rods 6 are kept communicated, the annular heat dissipation cavity positioned outside the electrolyte layer is arranged in the liquid cavity, and the cooling liquid with lower boiling point is arranged in the liquid cavity, so that in the heating process of the battery, the cooling liquid has the characteristic of heat absorption and evaporation, and the problem of slow temperature rise of the battery can be reduced.
And when the battery temperature rises rapidly, the torsion spring 10 made of the memory material connected on the conducting rods 6 deforms, so that the torsional force of the torsion spring 10 is overcome, the two conducting rods 6 rotate in opposite directions, the battery connection is automatically disconnected, and the problem that the battery is damaged or an external circuit is burnt out is solved.
The cooling liquid in the liquid cavity 5 is made of green opaque material, so the green light emitted by the indicator light 9 can not be emitted into the photosensitive resistor 13 in the negative plate 3 under the normal state, in the use of the invention, the voltage dividing capacitor 8 is positioned in the branch to play a role of detecting the voltage at two ends, when the service life of the battery is up, the internal resistance is increased, and the output voltage is reduced, so the voltage at two ends of the voltage dividing capacitor 8 is changed, the voltage dividing capacitor 8 outputs current outwards within a period of time, and the indicator light 9 connected with the branch where the voltage dividing capacitor 8 is positioned emits the green light within a period of time, at the moment, because the internal resistance is larger and the temperature in the battery is higher, the cooling liquid converts most of the cooling liquid into gas, so the cooling liquid can not absorb the green light, and the photosensitive resistor 13 receives illumination to be communicated with the electromagnetic valve in the exhaust hole 12, thereby introducing the external air flow into the liquid cavity, the problem that the temperature of the battery rises after the internal resistance is increased is solved under the action of natural wind flow, and the quick exhaustion of electric quantity can be prompted to the outside, so that the replacement of workers is facilitated;
when the temperature is higher, the gasification effect of the cooling liquid generates larger air pressure, when the temperature exceeds the opening pressure of the pressure relief valve in the pressure relief hole 11, high-speed air flow is output outwards, the exhaust hole 12 of the battery can be arranged at one side close to the shell, and the exhausted high-speed air flow can enable the battery to be separated from the device for fixing the battery with the outside, so that the physical disconnection effect is realized.
Although the terms of the case 1, the positive electrode block 2, the negative electrode plate 3, the electrolyte layer 4, the liquid chamber 5, the conductive rod 6, the heat dissipation chamber 7, the voltage dividing capacitor 8, the indicator light 9, the torsion spring 10, the pressure release hole 11, the exhaust hole 12, the photoresistor 13, etc., are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (5)

1. The utility model provides an overheat protection's battery, includes shell (1), anodal piece (2), negative plate (3), its characterized in that, anodal piece (2) are connected with electrolyte layer (4) and sap cavity (5) of establishing in shell (1) inside, the cooling liquid is equipped with in sap cavity (5), the bottom and negative plate (3) of electrolyte layer (4) are fixedly connected with a conducting rod (6) respectively and the conducting part of two conducting rods (6) offsets, sap cavity (5) intercommunication is equipped with annular heat dissipation chamber (7), heat dissipation chamber (7) subsection is in the outside of electrolyte layer (4) and communicate with anodal piece (2).
2. An overheat protection battery as claimed in claim 1, wherein the conducting rod (6) connected to the electrolyte layer (4) is connected in parallel with a voltage dividing capacitor (8), the voltage dividing capacitor is connected in series with a prompting lamp (9), the prompting lamp (9) faces the negative plate (3) and adopts a flashing structure, and the light emission of the prompting lamp (9) is green.
3. A battery as claimed in claim 1, characterized in that a light-sensitive resistor (13) is embedded in the negative plate (3), said light-sensitive resistor being positioned opposite the indicator light (9), said cooling liquid being a green opaque material and having a boiling point set at 70 ℃.
4. The battery with the overheat protection function according to claim 1, wherein the liquid storage cavity (5) is respectively provided with a pressure relief hole (11) and an exhaust hole (12), the pressure relief hole (11) is hermetically connected with a pressure relief valve, the exhaust hole (12) is hermetically connected with an electromagnetic valve, and the electromagnetic valve is electrically connected with the photoresistor (13).
5. The battery with the overheat protection function according to claim 1, wherein a torsion spring (10) is fixedly connected to each of the two conductive rods (6), and the torsion springs (10) are made of memory metal materials.
CN202011292080.4A 2020-11-18 2020-11-18 Overheat protection battery Withdrawn CN112436213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011292080.4A CN112436213A (en) 2020-11-18 2020-11-18 Overheat protection battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011292080.4A CN112436213A (en) 2020-11-18 2020-11-18 Overheat protection battery

Publications (1)

Publication Number Publication Date
CN112436213A true CN112436213A (en) 2021-03-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011292080.4A Withdrawn CN112436213A (en) 2020-11-18 2020-11-18 Overheat protection battery

Country Status (1)

Country Link
CN (1) CN112436213A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113991262A (en) * 2021-09-06 2022-01-28 福建船政交通职业学院 Energy storage battery overheat protection system
CN115117490A (en) * 2022-08-29 2022-09-27 江苏铭瀚智能科技有限公司 Temperature monitoring device and battery box with same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113991262A (en) * 2021-09-06 2022-01-28 福建船政交通职业学院 Energy storage battery overheat protection system
CN113991262B (en) * 2021-09-06 2023-04-14 福建船政交通职业学院 Energy storage battery overheat protection system
CN115117490A (en) * 2022-08-29 2022-09-27 江苏铭瀚智能科技有限公司 Temperature monitoring device and battery box with same

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Application publication date: 20210302