CN113067055B - Visual type heat preservation lithium cell - Google Patents
Visual type heat preservation lithium cell Download PDFInfo
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- CN113067055B CN113067055B CN202110221728.7A CN202110221728A CN113067055B CN 113067055 B CN113067055 B CN 113067055B CN 202110221728 A CN202110221728 A CN 202110221728A CN 113067055 B CN113067055 B CN 113067055B
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- heat dissipation
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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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
- H01M10/05—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
- H01M10/42—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
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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)
- Secondary Cells (AREA)
Abstract
The invention discloses a visual heat-preservation lithium battery which comprises a shell, wherein a temperature control box is fixed on the inner wall of the shell, a heat dissipation box is fixed on the outer wall of the shell, an electric connection rod penetrates through the side wall of the shell, two ends of the electric connection rod are respectively inserted into the temperature control box and the heat dissipation box, an electric connection block is fixed on each electric connection block, a power transformation mechanism is arranged in the temperature control box, and a heat dissipation driving component is arranged in the heat dissipation box. Has the advantages that: through setting up the electric pole that connects, and connect the electric pole both ends and set up and connect the electric piece, when the battery is in low temperature environment, after the normal start, according to thermoelectric efficiency, it will release heat to connect the electric pole to be located the inside one end of accuse temperature case, the inside temperature of accuse temperature case will rise because of the heating, consequently at the initial stage that the battery started, the accuse temperature case will release heat and carry out heat treatment to battery internal environment, thereby make the battery can keep initial high-efficient discharge under low temperature environment, guarantee normal power consumption, improve the adaptability of battery.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a visual heat-preservation lithium battery.
Background
The lithium battery is a primary battery which takes lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, is different from a rechargeable battery, namely a lithium ion battery and a lithium ion polymer battery, and is used more and more widely as an energy battery with high reaction efficiency, strong safety and small volume.
Along with the increase of the application equipment kind, the application occasion of lithium cell is also along with the consumer constantly increases, therefore the lithium cell often works under low temperature environment, and low temperature environment can't improve effective temperature for the discharge of lithium cell, especially at the initial stage of discharging, can't effectively supply power for the consumer, thereby seriously influence the use of equipment, user commonly uses additional equipment at present and heats the battery alone, it is very inconvenient and have illegal operational environment, and the user can't make the judgement to the inside temperature environment of battery, almost not have any observable point, it is difficult to battery state judgement.
Disclosure of Invention
The invention aims to solve the problem that a lithium battery in the prior art is poor in adaptability, and provides a visual heat-preservation lithium battery.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a visual type heat preservation lithium cell, includes the shell, the inner wall of shell is fixed with the accuse temperature case, the outer wall of shell is fixed with the heat dissipation case, the lateral wall of shell runs through to be inserted and is equipped with the pole that connects electricity, the both ends of connecting the pole insert respectively accuse temperature case and the incasement portion that dispels the heat and all be fixed with and connect the electricity piece, the inside of accuse temperature case is equipped with power transformation mechanism, the inside of heat dissipation case is equipped with heat dissipation drive arrangement.
In the above-mentioned visual type heat preservation lithium battery, the heat dissipation driver part is including being fixed in the baffle of heat dissipation incasement wall, a plurality of orifices have been seted up in the lateral wall of baffle run through, every the inner wall of orifice all is fixed with the pressure valve, the inside packing of heat dissipation case has methylamine gas and dichloromethane solution.
In foretell visual type heat preservation lithium cell, the inner wall of heat dissipation case is connected with the clamp plate through reset spring, the sealed sliding connection of clamp plate and heat dissipation case's inner wall, the lateral wall of heat dissipation case is run through to be inserted and is equipped with the heat absorption pipe that extends to the shell inside, heat absorption intraductal packing has the coolant liquid, is equipped with the pressure valve in the heat absorption pipe.
In the above-mentioned visual type heat preservation lithium battery, the power transformation mechanism includes a pair of conducting blocks that are fixed in the inner wall of the temperature control box, the inner wall of the temperature control box is fixed with the torsion strip, the end of the torsion strip is fixed with the connecting rod, and the both ends of the connecting rod are fixed with the positive pole piece and the negative pole piece respectively.
In foretell visual type heat preservation lithium cell, twist reverse the strip and make by the memory metal that twists reverse the setting, positive pole piece and negative pole piece respectively with two conducting blocks counterbalance, positive pole piece and negative pole piece pass through the wire and respectively with two connect electric connection piece electric connection.
In the visual heat-preservation lithium battery, the heat-preservation layer is filled in the side wall of the shell, the side wall of the heat dissipation box is embedded with a plurality of expansion belts, and the expansion belts are made of elastic rubber materials.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, by arranging the power connection rod and arranging the power connection blocks at two ends of the power connection rod, when the battery is in a low-temperature environment and is normally started, one end of the power connection rod, which is positioned in the temperature control box, can release heat according to thermoelectric efficiency, and the temperature in the temperature control box can rise due to heating, so that the temperature control box can release heat to heat the internal environment of the battery at the initial starting stage of the battery, and thus the battery can keep initial high-efficiency discharge in the low-temperature environment, normal power utilization is ensured, and the adaptability of the battery is improved;
2. according to the invention, methylamine is filled in the heat dissipation box, the temperature in the heat dissipation box is reduced due to heat absorption of the end part of the electric connecting rod, so that methylamine in the heat dissipation box is liquefied due to excessive temperature reduction, the air pressure in the heat dissipation box is reduced, the expansion band can be sunken into the heat dissipation box due to the pressure of external atmospheric pressure, and the sunken degree is related to the actually reduced temperature degree in the heat dissipation box, so that a user can judge the low-temperature state in the battery according to the sunken degree of the expansion band, judge whether external heat supply is needed according to the actual low-temperature duration time, and further conveniently know the state of the battery for coping;
3. according to the invention, by arranging the torsion bar, when the internal temperature of the battery is too high due to self-working heating, the torsion bar reaches the abnormal temperature, so that the connecting rod is driven to be twisted, the positive electrode block and the negative electrode block are transposed, the actual current flow direction in the electric connecting rod is changed, the heat absorption and heat release states at the two ends of the electric connecting rod are exchanged, one end inside the temperature control box absorbs heat, the increase of the internal temperature of the battery is relieved, and the effect of stabilizing the internal temperature of the battery is achieved;
4. according to the invention, when the temperature in the battery is too high, the end, located in the heat dissipation box, of the electric connecting rod releases heat, so that dichloromethane in the heat dissipation box absorbs heat and is gasified, the air pressure in the heat dissipation box is continuously increased, the pressure valve in the spray hole is broken through after the upper air pressure is increased to a certain value, the pressure plate is pushed by the air pressure to extrude the cooling liquid in the heat dissipation box, the cooling liquid enters the heat absorption pipe, the external space of the cooling liquid is transferred to the interior of the shell, and the interior of the battery is rapidly and effectively cooled.
Drawings
FIG. 1 is a schematic structural diagram of a visual type heat-preservation lithium battery provided by the invention;
fig. 2 is a side sectional view of a visual type heat preservation lithium battery according to the present invention.
In the figure: the device comprises a shell 1, a temperature control box 2, a heat dissipation box 3, a 4-power connection rod, a 5-power connection block, a 6 partition plate, a 7 heat absorption pipe, 8 spray holes, a 9 return spring, a 10 pressing plate, a 11 expansion band, a 12 heat insulation layer, a 13 conductive block, a 14 torsion bar, a 15 connecting rod, a 16 positive block and a 17 negative block.
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, a visual type heat preservation lithium battery comprises a shell 1, a temperature control box 2 is fixed on the inner wall of the shell 1, a heat dissipation box 3 is fixed on the outer wall of the shell 1, an electric connection rod 4 is inserted into the side wall of the shell 1 in a penetrating mode, two ends of the electric connection rod 4 are respectively inserted into the temperature control box 2 and the heat dissipation box 3 and are respectively fixed with an electric connection block 5, a power transformation mechanism is arranged inside the temperature control box 2, and a heat dissipation driving part is arranged inside the heat dissipation box 3.
The heat dissipation driving part comprises a partition plate 6 fixed on the inner wall of the heat dissipation box 3, a plurality of spray holes 8 are formed in the side wall of the partition plate 6 in a penetrating mode, a pressure valve is fixed on the inner wall of each spray hole 8, methylamine gas and dichloromethane solution are filled in the heat dissipation box 3, methylamine can be liquefied at a low temperature to reduce the internal gas pressure of the heat dissipation box 3, and dichloromethane can effectively gasify at a high temperature to increase the internal gas pressure of the heat dissipation box 3.
The inner wall of heat dissipation case 3 is connected with clamp plate 10 through reset spring 9, the sealed sliding connection of clamp plate 10 and heat dissipation case 3's inner wall, and the lateral wall of heat dissipation case 3 runs through to be inserted and is equipped with the heat absorption pipe 7 that extends to the inside of shell 1, and the inside packing of heat absorption pipe 7 has the coolant liquid, is equipped with the pressure valve in the heat absorption pipe 7, and the inside coolant liquid of heat absorption pipe 7 is effectual when the inside temperature of battery is higher and is absorbed the inside heat of battery, and the coolant liquid is located heat dissipation case 3 under the conventional state.
The power transformation mechanism comprises a pair of conductive blocks 13 fixed on the inner wall of the temperature control box 2, a torsion bar 14 is fixed on the inner wall of the temperature control box 2, a connecting rod 15 is fixed at the end part of the torsion bar 14, and an anode block 16 and a cathode block 17 are respectively fixed at two ends of the connecting rod 15.
The twisting bar 14 is made of memory metal arranged in a twisting mode, the positive electrode block 16 and the negative electrode block 17 are respectively abutted against the two conductive blocks 13, the positive electrode block 16 and the negative electrode block 17 are respectively electrically connected with the two electricity connection blocks 5 through conducting wires, the two conductive blocks 13 are stably connected with a circuit, and the connecting directions of the positive electrode block 16 and the negative electrode block 17 and the two conductive blocks 13 determine the current flow direction of the electricity connection rod 4, so that the heat absorbing and releasing states of the two ends of the electricity connection rod 4 are determined.
The lateral wall packing of shell 1 has heat preservation 12, and the lateral wall of heat dissipation case 3 inlays and is equipped with a plurality of inflation areas 11, and inflation area 11 is made by elastic rubber material, and the existence of heat preservation 12 can reduce the influence of low temperature environment to the battery is inside to the power supply efficiency when the increase battery of certain degree starts, inflation area 11 can embody the inside temperature state of battery according to the inflation and the sunken degree of self, and the user of being convenient for judges.
According to the invention, when a battery is electrified and started, the electric connecting rod 4 and the electric connecting blocks 5 at two ends are connected into a circuit, so that stable direct current passes through the circuit, and according to a thermoelectric effect, when direct current passes through a circuit consisting of two different materials, heat absorption and release phenomena respectively occur at two joints, namely, one end of the electric connecting rod 4 positioned in the temperature control box 2 releases heat, and one end positioned in the heat dissipation box 3 absorbs heat;
the temperature in the temperature control box 2 will rise due to heating, so that at the initial stage of starting the battery, the temperature control box 2 will release heat to heat the internal environment of the battery, so that the battery can keep initial high-efficiency discharge in a low-temperature environment, normal power utilization is ensured, and the adaptability of the battery is improved;
the temperature in the heat dissipation box 3 is reduced due to heat absorption of the end part of the electric connecting rod 4, so that methylamine in the heat dissipation box 3 is liquefied due to excessive temperature reduction, the air pressure in the heat dissipation box 3 is reduced, the expansion band 11 is sunken into the heat dissipation box 3 due to the pressure of the external atmospheric pressure, and the sunken degree is related to the actually reduced temperature degree in the heat dissipation box 3, so that a user can judge the low-temperature state in the battery according to the sunken degree of the expansion band 11, judge whether external heat supply is needed to relieve the low-temperature state of the battery according to the continuous duration of the actual low temperature, and conveniently know the state of the battery to respond;
at higher internal temperatures of the battery, the torsion bar 14 will reach an metamorphic temperature, thereby causing the connecting rod 15 to twist, thereby the positive electrode block 16 and the negative electrode block 17 are switched, and the actual current direction in the electric connecting rod 4 is changed, so that the heat absorption and heat release states at the two ends of the electric connecting rod 4 are exchanged, namely, one end inside the temperature control box 2 absorbs heat, so as to relieve the rise of the internal temperature of the battery, and one end inside the heat dissipation box 3 releases heat, so that the methylene dichloride in the heat dissipation box 3 absorbs heat and gasifies, the air pressure in the heat dissipation box 3 is continuously increased, and after the upper air pressure is increased to a certain value, the pressure valve in the spray hole 8 is broken through, so that the pressure plate 10 is pushed by the air pressure to press the cooling fluid inside, so that the cooling fluid enters the heat absorbing pipes 7, the cooling liquid transfers the external space to the interior of the shell 1, so that the interior of the battery is rapidly and effectively cooled;
the temperature inside the battery is lowered for a certain time by the large injection of the cooling liquid, so that the temperature of the torsion bar 14 is lowered below the transformation temperature, thereby resetting the torsion bar 14, resetting the positive electrode block 16 and the negative electrode block 17, exchanging the heat absorption and the heat release at the two ends of the electric connecting rod 4 again, in a short time thereafter, the interior of the battery can be maintained in an effective relatively low temperature state due to effective heat absorption of the cooling liquid, the vaporized methylene dichloride in the heat dissipation box 3 is liquefied due to the heat absorption of the end part of the electric connecting rod 4, so that the air pressure in the heat dissipation box 3 is reduced, the pressure difference between the two ends of the clapboard 6 reaches a sufficient value along with the reduction of the air pressure to a certain degree, thereby, the return spring 9 pushes the pressure plate 10 to return, and the cooling liquid which absorbs heat in the heat absorption tube 7 returns to the external space of the battery, so that the heat is rapidly diffused outwards to cool the battery;
because the calorific capacity of the end part of the power receiving rod 4 is smaller than the unit calorific capacity of the work of the battery, the internal temperature state of the battery is not influenced too much when the battery works normally, the regulation and control of heat absorption and release at the two ends of the power receiving rod 4 are utilized, the alternating transfer of cooling liquid is realized, the internal heat of the battery can be effectively and quickly diffused to the outside, the excessive heat is prevented from being accumulated inside the battery, a user can know the internal high-temperature condition of the battery according to the expansion degree of the expansion zone 11 and the continuous expansion time, and whether the external active cooling is needed to ensure the normal work of the battery is judged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. A visual heat-preservation lithium battery comprises a shell (1) and is characterized in that a temperature control box (2) is fixed on the inner wall of the shell (1), a heat dissipation box (3) is fixed on the outer wall of the shell (1), an electric connection rod (4) penetrates through and is inserted into the side wall of the shell (1), two ends of the electric connection rod (4) are respectively inserted into the temperature control box (2) and the heat dissipation box (3) and are respectively fixed with an electric connection block (5), a power transformation mechanism is arranged inside the temperature control box (2), and a heat dissipation driving part is arranged inside the heat dissipation box (3);
the torsion bar (14) is made of memory metal arranged in a torsion mode, the positive electrode block (16) and the negative electrode block (17) are respectively abutted against the two conductive blocks (13), and the positive electrode block (16) and the negative electrode block (17) are respectively and electrically connected with the two power connection blocks (5) through wires;
the heat dissipation driving part comprises a partition plate (6) fixed on the inner wall of the heat dissipation box (3), a plurality of spray holes (8) penetrate through the side wall of the partition plate (6), a pressure valve is fixed on the inner wall of each spray hole (8), and methylamine gas and dichloromethane solution are filled in the heat dissipation box (3);
the side wall of the shell (1) is filled with a heat insulation layer (12), a plurality of expansion bands (11) are embedded in the side wall of the heat dissipation box (3), and the expansion bands (11) are made of elastic rubber materials;
the power transformation mechanism comprises a pair of conductive blocks (13) fixed on the inner wall of a temperature control box (2), a torsion bar (14) is fixed on the inner wall of the temperature control box (2), a connecting rod (15) is fixed at the end part of the torsion bar (14), and a positive block (16) and a negative block (17) are respectively fixed at two ends of the connecting rod (15);
when the battery is started by power connection, the power connection rod (4) and the power connection blocks (5) at two ends are connected into the circuit, so that stable direct current passes through the circuit, and when direct current passes through the circuit consisting of two different materials, heat absorption and release are respectively generated at two joints.
2. The visual type heat-preservation lithium battery as claimed in claim 1, wherein the inner wall of the heat dissipation box (3) is connected with a pressure plate (10) through a return spring (9), the pressure plate (10) is connected with the inner wall of the heat dissipation box (3) in a sealing and sliding manner, the side wall of the heat dissipation box (3) is inserted through a heat absorption pipe (7) extending to the inside of the shell (1), the inside of the heat absorption pipe (7) is filled with cooling liquid, and a pressure valve is arranged in the heat absorption pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110221728.7A CN113067055B (en) | 2021-02-27 | 2021-02-27 | Visual type heat preservation lithium cell |
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|---|---|---|---|
| CN202110221728.7A CN113067055B (en) | 2021-02-27 | 2021-02-27 | Visual type heat preservation lithium cell |
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| CN113067055A CN113067055A (en) | 2021-07-02 |
| CN113067055B true CN113067055B (en) | 2022-08-30 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374162A (en) * | 2016-11-02 | 2017-02-01 | 上海工程技术大学 | Battery module heat management method and apparatus based on thermo-electric effect |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9236639B2 (en) * | 2003-12-18 | 2016-01-12 | GM Global Technology Operations LLC | Thermoelectric methods to control temperature of batteries |
| CN108767361B (en) * | 2018-04-25 | 2020-10-20 | 中国科学院广州能源研究所 | System and method for managing heat of outdoor battery |
| CN111628239A (en) * | 2019-02-28 | 2020-09-04 | 中天储能科技有限公司 | Battery pack and method of assembling the same |
| CN210984898U (en) * | 2019-10-09 | 2020-07-10 | 南安艺同工业产品设计有限公司 | Heating equipment of storage battery for vehicle |
| CN112103596A (en) * | 2020-10-12 | 2020-12-18 | 田兴光 | Preheating starting type safety lithium battery |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374162A (en) * | 2016-11-02 | 2017-02-01 | 上海工程技术大学 | Battery module heat management method and apparatus based on thermo-electric effect |
Non-Patent Citations (1)
| Title |
|---|
| 车用锂离子电池低温特性与加热方法研究进展;朱建功等;《汽车工程》;20190525(第05期);全文 * |
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Effective date of registration: 20220810 Address after: Room 109-111, Building 1, No. 23, Sanlili Road, Xiangfang District, Harbin, Heilongjiang, 150000 Applicant after: Harbin Weixing Power Supply Science & Technology Development Co.,Ltd. Address before: 611130 Huimin Road, Wenjiang District, Chengdu, Sichuan Province, No. 211 Applicant before: Chen Yang |
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