CN115395150B - Intelligent high-capacity energy storage battery - Google Patents
Intelligent high-capacity energy storage battery Download PDFInfo
- Publication number
- CN115395150B CN115395150B CN202211115424.3A CN202211115424A CN115395150B CN 115395150 B CN115395150 B CN 115395150B CN 202211115424 A CN202211115424 A CN 202211115424A CN 115395150 B CN115395150 B CN 115395150B
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- energy storage
- storage battery
- electrically connected
- capacity energy
- pressure type
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- 238000004146 energy storage Methods 0.000 title claims abstract description 96
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 abstract description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 9
- 229910001416 lithium ion Inorganic materials 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides an intelligent high-capacity energy storage battery, wherein the positive electrode and the negative electrode of the high-capacity energy storage battery are electrically connected with a pressure type polar column; the input end of the voltage detection chip is electrically connected with the high-capacity energy storage battery; the output end of the voltage detection chip is electrically connected with the input end of the control unit; the input end of the DC-DC converter is electrically connected with the pressure type polar column; the primary output terminal is electrically connected with the output end of the DC-DC converter; the signal end of the DC-DC converter is electrically connected with the control unit; the secondary output terminal is electrically connected with the output end of the control unit; the top surface of the high-capacity energy storage battery is provided with an energy release corrugated airtight cavity; the pressure type polar column is arranged in the energy release corrugated closed cavity; a plastic end cover is arranged at the top of the energy release corrugated airtight cavity; the bottom surface of the pressure type polar column is matched with the pressure surface of the polar column of the high-capacity energy storage battery; the top surface of high-capacity energy storage battery is provided with the pressure relief valve. The invention combines the depth of battery charge and discharge, the running environment and the battery voltage to realize the autonomous equalization, energy release and isolation of the energy storage battery.
Description
Technical Field
The invention belongs to the technical field of novel energy storage, and particularly relates to an intelligent high-capacity energy storage battery.
Background
In the research of a novel power system with new energy as a leading source, a novel energy storage technology becomes an increasingly important power system regulating device, a powerful support is provided for stabilizing power system fluctuation brought by new energy power generation, and a lithium ion battery is used as an energy storage element which is the most widely applied and mature in the novel energy storage technology, so that a large number of applications are obtained.
Because the high-capacity lithium ion batteries have strict requirements on the consistency of the batteries during grouping, the initial screening is mainly relied on to ensure the grouping consistency during the grouping of the single high-capacity lithium ion batteries at the present stage, but the working conditions of the high-capacity lithium ion batteries in the operation of an energy storage system are complex, the problems of poor battery consistency and the like caused by overcharging, overdischarging, inconsistent temperature and the like of the single high-capacity lithium ion batteries in the operation have no solution, so that the lithium ion batteries become the element with the highest fault in the energy storage system, and the normal use and the operation safety of the energy storage system are seriously influenced.
Disclosure of Invention
The invention aims to solve the defects in the background technology, and provides an intelligent high-capacity energy storage battery which is combined with the depth of charge and discharge of the battery, the running environment and the battery voltage to realize autonomous equalization, energy release and isolation of the energy storage battery.
The technical scheme adopted by the invention is as follows: an intelligent large-capacity energy storage battery comprises a large-capacity energy storage battery, a pressure type pole, a voltage detection chip, a DC-DC converter and a control unit; the positive electrode and the negative electrode of the high-capacity energy storage battery are electrically connected with the pressure type polar column; the input end of the voltage detection chip is electrically connected with the high-capacity energy storage battery; the output end of the voltage detection chip is electrically connected with the input end of the control unit; the input end of the DC-DC converter is electrically connected with the pressure type polar column; the device also comprises a primary output terminal and a secondary output terminal; the primary output terminal is electrically connected with the output end of the DC-DC converter; the signal end of the DC-DC converter is electrically connected with the control unit; the secondary output terminal is electrically connected with the output end of the control unit; the temperature sensing element is electrically connected with the input end of the control unit;
the top surface of the high-capacity energy storage battery is provided with an energy release corrugated airtight cavity; the pressure type polar column is arranged in the energy release corrugated closed cavity; a plastic end cover is arranged at the top of the energy release corrugated closed cavity; the bottom surface of the pressure type polar column is matched with the pressure surface of the polar column of the high-capacity energy storage battery; the top surface of the high-capacity energy storage battery is matched with the energy release corrugated closed cavity to form a closed cavity structure; the top surface of high-capacity energy storage battery is provided with the pressure relief valve.
In the technical scheme, the circuit board is also included; the voltage detection chip, the DC-DC converter and the control unit are integrated on the circuit board.
In the technical scheme, a plastic end cover is arranged at the top of the energy release corrugated airtight cavity; the large top surface of the energy release corrugated airtight cavity is matched with the plastic end cover to form an airtight cavity structure.
In the technical scheme, the circuit board is arranged in the plastic end cover.
In the technical scheme, the bottom of the pressure type polar column is arranged in the energy release corrugated closed cavity; the top of the pressure type pole is arranged in the plastic end cover.
In the technical scheme, the primary output terminal and the secondary output terminal are arranged on the top surface of the plastic end cover, and the primary output terminal is electrically connected with the output end of the DC-DC converter through a wire; the secondary output terminal is electrically connected with the output end of the control unit through a wire.
In the technical scheme, the temperature sensing element is arranged on the inner wall of the corrugated airtight cavity.
In the technical scheme, the circuit board is welded on the top surface of the pressure type pole.
In the technical scheme, the input point of the DC-DC converter is welded on the pressure type pole.
The beneficial effects of the invention are as follows: firstly, when the batteries are grouped, a DC-DC converter is adopted for grouping, so that strict requirements of the battery grouping on consistency of the single energy storage batteries are simplified. The control unit, the DC-DC converter and other modules are integrated on the single battery, so that damage caused by grouping of the energy storage system is avoided. The single energy storage battery can feed back the real-time running state of the single battery to the intelligent large-capacity energy storage battery control system, and when the running working condition of the system changes, the intelligent large-capacity energy storage battery control system can make corresponding adjustment by combining the regulation and control signals of the energy storage system and the condition of the single energy storage battery body, so that the battery fault caused by overcharging and overdischarging of the single energy storage battery is avoided. Finally, when the single energy storage battery releases energy in a thermal runaway manner, the single energy storage battery releases energy generated by the thermal runaway for the first time when the corrugated closed cavity expands, energy release kinetic energy is effectively buffered, and meanwhile, the pressure type polar column actively isolates the fault single battery from the energy storage system, so that fault expansion is avoided.
Meanwhile, due to the design scheme of the invention, the consistency requirement of the energy storage system on the lithium ion battery is reduced, and the cost of the lithium ion battery in the energy storage system is indirectly reduced; the intelligent large-capacity energy storage battery is integrally installed in a modularized manner, and energy storage systems with corresponding scales can be randomly combined according to the energy storage group scale and the requirement; in addition, the invention considers the requirement of industrial production in design, adopts a modularized structure, is suitable for mass production, can carry out improved processing and manufacturing on the basis of the existing equipment, and greatly saves the initial input cost of lithium ion battery enterprises. In addition, the invention can be applied to a power battery system besides an energy storage system.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic diagram of the structure a of the present invention;
FIG. 3 is a schematic diagram b of the structure of the present invention;
fig. 4 is a schematic diagram of a structural variation of the present invention.
Wherein, 1-large capacity energy storage battery; 2-energy release ripple closed cavity; 3-plastic end caps; 4-a circuit board; 5-pressure type pole; 6-primary output terminals; a 7-DC-DC converter; 8-a temperature sensing element; 9-a secondary output terminal; 10-a control unit; 11-conducting wires; 12-a voltage detection chip; 13-battery pressure relief valve, 14-pole of high-capacity energy storage battery.
Detailed Description
The invention will now be described in further detail with reference to the drawings and specific examples, which are given for clarity of understanding and are not to be construed as limiting the invention.
As shown in fig. 1, the present invention provides an intelligent large-capacity energy storage battery, comprising a large-capacity energy storage battery 1, a pressure type pole 5, a voltage detection chip 12, a DC-DC converter 7 and a control unit 10; the positive electrode and the negative electrode of the high-capacity energy storage battery 1 are electrically connected with the pressure type polar column 5; the input end of the voltage detection chip 12 is electrically connected with the high-capacity energy storage battery 1; the output end of the voltage detection chip 12 is electrically connected with the input end of the control unit 10; the input end of the DC-DC converter 7 is electrically connected with the pressure type polar column 5; a primary output terminal 6 and a secondary output terminal 9 are also included; the primary output terminal 6 is electrically connected with the output end of the DC-DC converter 7; the signal end of the DC-DC converter 7 is electrically connected with the control unit 10; the secondary output terminal 9 is electrically connected with the output end of the control unit 10; the temperature sensing device further comprises a temperature sensing element 8, and the temperature sensing element 8 is electrically connected with the input end of the control unit 10. The large-capacity energy storage battery 1 discharges electric energy to an external load through the primary output terminal 6 via the pressure-type pole 5 and the DC-DC converter 7, or receives electric energy discharged from an external power source. The voltage detection chip 12 is used for detecting the real-time voltage of the large-capacity energy storage battery 1 and sending the real-time voltage to the control unit 10, and the temperature sensing element 8 is used for detecting the real-time temperature of the large-capacity energy storage battery 1 and sending the real-time temperature to the control unit 10. The DC-DC converter 7 is a bidirectional DC converter, and realizes the charging and discharging of the body of the high-capacity energy storage battery 1.
The control unit 10 of this embodiment employs the unit machine shown in fig. 1. The control unit 10 uploads the received voltage signal and temperature signal to an external energy storage system monitoring unit through the secondary output terminal 9, so that the energy storage system monitoring unit can acquire the running condition of the intelligent large-capacity energy storage battery 1 in real time. The high-capacity energy storage battery 1 is used as a single battery, and a battery pack is formed in a serial connection mode. The battery packs are connected in parallel and act together to execute the charging and discharging process. The energy storage system monitoring unit receives the real-time voltage signal and the temperature signal of each single cell respectively, so that the running condition of each intelligent large-capacity energy storage battery 1 is judged, and when a fault occurs in a certain single cell, a driving command is sent to the control unit 10 of the single cell. The control unit 10 receives the driving instruction from the energy storage system monitoring unit through the secondary output terminal 9, and generates a control instruction based on the driving instruction to adjust the output of the DC-DC converter in real time, so that the stability and consistency of the output voltage of the primary terminal and the input voltage of the single battery are ensured, and the single battery fault caused by overcharging and overdischarging during the charging and discharging process of the battery is avoided.
As shown in fig. 2, the top surface of the large-capacity energy storage battery 1 is provided with an energy release corrugated airtight cavity 2; the pressure type polar column 5 is arranged in the energy release corrugated airtight cavity 2; the top of the energy release corrugated airtight cavity 2 is provided with a plastic end cover 3. The temperature sensing element 8 is arranged on the inner wall of the corrugated closed cavity, and can reflect the environmental temperature change of the single high-capacity battery in real time. The bottom surface of the pressure type polar column 5 is matched with the pressure surface of the polar column of the high-capacity energy storage battery 1; the top surface of the high-capacity energy storage battery 1 is matched with the energy release corrugated airtight cavity 2 to form an airtight cavity structure; the top surface of the large-capacity energy storage battery 1 is provided with a pressure release valve. When the single battery works normally, the bottom surface of the pressure type polar column 5 is contacted with the pressure surface of the polar column of the high-capacity energy storage battery 1.
The energy release corrugated airtight cavity 2 and the shell of the high-capacity energy storage battery 1 are integrally formed, a pressure type polar column 5 is arranged in the energy release corrugated airtight cavity 2, and the energy release corrugated is used for compression connection during packaging. As shown in fig. 3 and 4, when thermal runaway occurs in the large-capacity energy storage battery 1, gas and liquid with pressure generated in the single battery enter the energy release corrugated closed cavity 2 through the battery pressure release valve 13, and the gas and liquid with pressure entering the energy release corrugated closed cavity 2 pull the corrugated deformation, so that the pressure type pole 5 loses pressure and releases force, the contact with the pressure surface of the pole 14 of the large-capacity energy storage battery 1 is disconnected, the external power supply is isolated from inputting circulating voltage to the single battery, and the expansion of faults caused by the input of the external power supply when the single large-capacity energy storage battery 1 breaks down is avoided. Meanwhile, the pressure is released by pulling the corrugation by the compressed air and the liquid, and the compressed air and the liquid generated by faults can be well collected and energy is released at the same time after the gas and the pressure of the single battery fully lift the corrugation.
Specifically, a plastic end cover 3 is arranged at the top of the energy release corrugated airtight cavity 2; the large top surface of the energy release corrugated airtight cavity 2 is matched with the plastic end cover 3 to form an airtight cavity structure. Also comprises a circuit board 4; the voltage detection chip 12, the DC-DC converter 7 and the control unit 10 are integrally packaged on the circuit board 4, the circuit board 4 is welded on the top surface of the pressure type pole 5, the input point of the DC-DC converter 7 is welded on the pressure type pole 5, and the circuit board 4 is arranged in the plastic end cover 3, so that internal circuit faults are reduced. According to the invention, all circuit element modules except the single battery body and the pressure type polar column 5 are integrated on the circuit board 4, and the adopted lead 11 and the circuit board 4 are packaged in the plastic end cover 3, so that the overall safety of the device is ensured, and unified modularized management is convenient to realize.
Specifically, the bottom of the pressure type polar column 5 is arranged in the energy release corrugated airtight cavity 2; the top of the pressure type polar column 5 is arranged in the plastic end cover 3, so that the bottom surface of the pressure type polar column 5 is effectively contacted with the pressure surface of the polar column 14 of the high-capacity energy storage battery when the single battery works normally; meanwhile, when the high-capacity energy storage battery 1 is out of control, the bottom surface of the pressure type polar column 5 is effectively separated from the pressure surface of the polar column 14 of the high-capacity energy storage battery.
In the above technical solution, the primary output terminal 6 and the secondary output terminal 9 are disposed on the top surface of the plastic end cover 3, and the primary output terminal 6 is electrically connected with the output end of the DC-DC converter 7 through a wire 11; the secondary output terminal 9 is electrically connected to an output of the control unit 10 via a wire 11. The secondary output terminal and the secondary output terminal 9 are arranged on the top surface of the plastic end cover 3, so that the modular management of the single battery is realized, the connection of an external power supply or load is facilitated, and the monitoring unit of the energy storage system is realized.
According to the invention, the real-time monitoring and adjusting unit and the pressure releasing device are additionally arranged on the high-capacity energy storage battery 1, so that the hidden danger and the reliability problem of the energy storage system caused by single batteries are effectively reduced. The energy release corrugated airtight cavity 2 is added at the upper part of the high-capacity energy storage battery 1, the pressure type polar column 5 device is arranged on the energy release corrugated airtight cavity 2 and is connected with the polar column of the high-capacity energy storage battery 1 by adopting a pressure surface, so that a passive energy release and active isolation device is formed. The upper part of the insulating end cover is provided with a first output end and a second output end of the DC-DC converter 7, the first end meets the wiring requirement of the single battery, the second end has the operation output functions of the battery such as the SOC state, the operation temperature, the single battery voltage and the like, and the monitoring requirement of the single battery in the design of the energy storage power station is met.
What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (9)
1. An intelligent high-capacity energy storage battery which is characterized in that: the device comprises a high-capacity energy storage battery, a pressure type polar column, a voltage detection chip, a DC-DC converter and a control unit; the positive electrode and the negative electrode of the high-capacity energy storage battery are electrically connected with the pressure type polar column; the input end of the voltage detection chip is electrically connected with the high-capacity energy storage battery; the output end of the voltage detection chip is electrically connected with the input end of the control unit; the input end of the DC-DC converter is electrically connected with the pressure type polar column; the device also comprises a primary output terminal and a secondary output terminal; the primary output terminal is electrically connected with the output end of the DC-DC converter; the signal end of the DC-DC converter is electrically connected with the control unit; the secondary output terminal is electrically connected with the output end of the control unit; the temperature sensing element is used for the real-time temperature of the high-capacity energy storage battery and is electrically connected with the input end of the control unit;
the top surface of the high-capacity energy storage battery is provided with an energy release corrugated airtight cavity; the pressure type polar column is arranged in the energy release corrugated closed cavity; a plastic end cover is arranged at the top of the energy release corrugated closed cavity; the bottom surface of the pressure type polar column is matched with the pressure surface of the polar column of the high-capacity energy storage battery; the top surface of the high-capacity energy storage battery is matched with the energy release corrugated closed cavity to form a closed cavity structure; the top surface of high-capacity energy storage battery is provided with the pressure relief valve.
2. The intelligent high-capacity energy storage battery of claim 1, wherein: the circuit board is also included; the voltage detection chip, the DC-DC converter and the control unit are integrated on the circuit board.
3. The intelligent high-capacity energy storage battery of claim 2, wherein: the large top surface of the energy release corrugated airtight cavity is matched with the plastic end cover to form an airtight cavity structure.
4. An intelligent high capacity energy storage battery as claimed in claim 3, wherein: the circuit board is arranged in the plastic end cover.
5. The intelligent high-capacity energy storage battery of claim 4, wherein: the bottom of the pressure type polar column is arranged in the energy release corrugated airtight cavity; the top of the pressure type pole is arranged in the plastic end cover.
6. The intelligent high-capacity energy storage battery of claim 5, wherein: the primary output terminal and the secondary output terminal are arranged on the top surface of the plastic end cover, and the primary output terminal is electrically connected with the output end of the DC-DC converter through a wire; the secondary output terminal is electrically connected with the output end of the control unit through a wire.
7. The intelligent high-capacity energy storage battery of claim 1, wherein: the temperature sensing element is arranged on the inner wall of the corrugated airtight cavity.
8. An intelligent high capacity energy storage battery as claimed in claim 3, wherein: the circuit board is welded on the top surface of the pressure type pole.
9. The intelligent high-capacity energy storage battery of claim 2, wherein: the input point of the DC-DC converter is welded on the pressure type polar column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211115424.3A CN115395150B (en) | 2022-09-14 | 2022-09-14 | Intelligent high-capacity energy storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211115424.3A CN115395150B (en) | 2022-09-14 | 2022-09-14 | Intelligent high-capacity energy storage battery |
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| Publication Number | Publication Date |
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| CN115395150A CN115395150A (en) | 2022-11-25 |
| CN115395150B true CN115395150B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211115424.3A Active CN115395150B (en) | 2022-09-14 | 2022-09-14 | Intelligent high-capacity energy storage battery |
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| CN (1) | CN115395150B (en) |
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| US8134343B2 (en) * | 2007-04-27 | 2012-03-13 | Flextronics International Kft | Energy storage device for starting engines of motor vehicles and other transportation systems |
| US10263436B2 (en) * | 2014-10-20 | 2019-04-16 | Powin Energy Corporation | Electrical energy storage unit and control system and applications thereof |
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| JP2003157821A (en) * | 2001-11-22 | 2003-05-30 | Japan Storage Battery Co Ltd | Pressure-compensated battery |
| JP2009123560A (en) * | 2007-11-15 | 2009-06-04 | Panasonic Corp | Battery pack and charging system |
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| CN112290107A (en) * | 2020-09-14 | 2021-01-29 | 侯晓华 | Intelligent lithium ion battery packaging structure |
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| Publication number | Publication date |
|---|---|
| CN115395150A (en) | 2022-11-25 |
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