CN115395150A - Intelligent high-capacity energy storage battery - Google Patents
Intelligent high-capacity energy storage battery Download PDFInfo
- Publication number
- CN115395150A CN115395150A CN202211115424.3A CN202211115424A CN115395150A CN 115395150 A CN115395150 A CN 115395150A CN 202211115424 A CN202211115424 A CN 202211115424A CN 115395150 A CN115395150 A CN 115395150A
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- energy storage
- storage battery
- electrically connected
- capacity energy
- type pole
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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
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000002955 isolation Methods 0.000 abstract description 2
- 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
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram 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
- 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
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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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
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- 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 pole; 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 pole; 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 closed cavity; the pressure type pole is arranged in the energy release corrugated closed cavity; the top of the energy release corrugated closed cavity is provided with a plastic end cover; the bottom surface of the pressure type pole is matched with the pressure surface of the pole of the high-capacity energy storage battery; and a pressure relief valve is arranged on the top surface of the high-capacity energy storage battery. The invention realizes the autonomous balance, energy release and isolation of the energy storage battery by combining the charging and discharging depth of the battery, the operating environment and the battery voltage.
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 factor, a novel energy storage technology becomes an increasingly important power system adjusting device, powerful support is provided for stabilizing power system fluctuation caused by new energy power generation, and a lithium ion battery is widely applied as an energy storage element with the most extensive application and the most mature technology in the novel energy storage technology and is widely applied.
Because the high-capacity lithium ion batteries have strict requirements on the consistency of the batteries when being grouped, the grouping consistency of the single high-capacity lithium ion batteries is ensured mainly by initial screening when being grouped 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 overcharge, overdischarge, inconsistent temperature and the like of the single high-capacity lithium ion batteries in the operation are not solved at all, so that the lithium ion batteries become elements 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 battery charging and discharging depth, the operating environment and the battery voltage to realize the autonomous balance, energy release and isolation of the energy storage battery.
The technical scheme adopted by the invention is as follows: an intelligent high-capacity energy storage battery comprises a high-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 pole; 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 pole; the circuit 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 sealed cavity; the pressure type pole 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 pole is matched with the pressure surface of the pole of the high-capacity energy storage battery; the top surface of the high-capacity energy storage battery is matched with the energy release corrugated airtight cavity to form an airtight cavity structure; and a pressure release valve is arranged on the top surface of the high-capacity energy storage battery.
In the above technical solution, the electronic device further comprises a circuit board; the voltage detection chip, the DC-DC converter and the control unit are integrated on the circuit board.
In the technical scheme, the plastic end cover is arranged at the top of the energy release corrugated closed cavity; the large top surface of the energy release corrugated closed cavity is matched with the plastic end cover to form a closed cavity structure.
In the above technical scheme, the circuit board is arranged in the plastic end cover.
In the technical scheme, the bottom of the pressure type pole 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 above technical solution, the primary output terminal and the secondary output terminal are disposed on the top surface of the plastic end cap, and the primary output terminal is electrically connected to the output end of the DC-DC converter through a wire; and the secondary output terminal is electrically connected with the output end of the control unit through a lead.
In the above technical solution, the temperature sensing element is disposed on an inner wall of the corrugated sealed cavity.
In the above technical solution, 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 invention has the beneficial effects that: firstly, when the batteries are grouped, a DC-DC converter is adopted for grouping, so that the strict requirement of the battery grouping on the consistency of the single energy storage batteries is simplified. And modules such as a control unit and a DC-DC converter are integrated on the single battery, so that the damage caused when the energy storage system is in a group is avoided. The single energy storage battery can feed back the real-time running state of the single battery to the intelligent high-capacity energy storage battery control system, when the running condition of the system changes, the intelligent high-capacity energy storage battery control system can make corresponding adjustment by combining the regulation and control signal of the energy storage system and the condition of the single energy storage battery body, and battery faults caused by over-charging and over-discharging of the single energy storage battery are avoided. Finally, when the single energy storage battery generates the thermal runaway controlled energy, the single energy storage battery primarily releases the energy generated by the thermal runaway when the corrugated sealed cavity expands, the energy release kinetic energy is effectively buffered, and the pressure type pole actively isolates the fault single battery from the energy storage system when releasing the energy, so that the fault expansion is avoided.
Meanwhile, due to the design scheme of the invention, the requirement of the energy storage system on the consistency of the lithium ion battery is reduced, and the cost of the lithium ion battery in the energy storage system is indirectly reduced; the intelligent high-capacity energy storage battery is integrally installed in a modularized mode, and an energy storage system with a corresponding scale can be combined randomly along with the grouping scale of energy storage and the need; in addition, the invention considers the requirement of industrial production in the design, adopts a modular 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 power battery systems besides energy storage systems.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic view of the structure of the present invention;
FIG. 3 is a schematic structural diagram b of the present invention;
fig. 4 is a schematic diagram of a structural change of the present invention.
Wherein, 1-high-capacity energy storage battery; 2-energy releasing corrugated closed cavity; 3-plastic end caps; 4-a circuit board; 5-pressure type pole column; 6-primary output terminal; a 7-DC-DC converter; 8-a temperature-sensing element; 9-secondary output terminals; 10-a control unit; 11-a wire; 12-a voltage detection chip; 13-a battery pressure release valve, 14-a pole of a large-capacity energy storage battery.
Detailed Description
The invention will be further described in detail with reference to the drawings and specific embodiments, which are not intended to limit the invention, for the clear understanding of the invention.
As shown in fig. 1, the present invention provides an intelligent high-capacity energy storage battery, which includes a high-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 pole 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 pole 5; further comprising a primary output terminal 6 and a secondary output terminal 9; 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 a 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 an 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 high-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 high-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 large-capacity energy storage battery 1 body.
The control unit 10 of the present 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 high-capacity energy storage battery 1 in real time. The high-capacity energy storage battery 1 is used as a single battery and forms a battery pack in a series 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 temperature signal of each single battery respectively, thereby judging the running condition of each intelligent high-capacity energy storage battery 1, and when finding that a certain single battery has a fault, sending a driving command to the control unit 10 of the single battery. The control unit 10 receives a driving instruction from the energy storage system monitoring unit through the secondary output terminal 9, generates a control instruction based on the driving instruction, and adjusts the output of the DC-DC converter in real time, so as to ensure the stability and consistency of the output voltage of the primary terminal and the input voltage of the single battery, and avoid the single battery fault caused by overcharge and overdischarge during the charging and discharging processes of the battery.
As shown in fig. 2, an energy releasing corrugated closed cavity 2 is arranged on the top surface of the large-capacity energy storage battery 1; the pressure type pole 5 is arranged in the energy release corrugated closed cavity 2; and a plastic end cover 3 is arranged at the top of the energy release corrugated closed cavity 2. The temperature sensing element 8 is arranged on the inner wall of the corrugated sealed cavity and can reflect the environmental temperature change of the single high-capacity battery in real time. The bottom surface of the pressure type pole 5 is matched with the pressure surface of the pole of the high-capacity energy storage battery 1; the top surface of the large-capacity energy storage battery 1 is matched with the energy release corrugated airtight cavity 2 to form an airtight cavity structure; and a pressure relief valve is arranged on the top surface of the high-capacity energy storage battery 1. When the single battery works normally, the bottom surface of the pressure type pole 5 is in contact with the pressure surface of the pole of the high-capacity energy storage battery 1.
The energy release corrugated closed cavity 2 and the shell of the high-capacity energy storage battery 1 are integrally formed, a pressure type pole 5 is arranged in the energy release corrugated closed cavity 2, and the energy release corrugations are compressed and connected during packaging. As shown in fig. 3 and 4, when the high-capacity energy storage battery 1 is out of control due to heat, gas and liquid with pressure generated in the single battery enter the energy release corrugated sealed cavity 2 through the battery pressure release valve 13, the gas and liquid with pressure entering the energy release corrugated sealed cavity 2 pull the corrugation to deform, so that the pressure type pole 5 loses pressure and is disengaged from the pressure surface of the pole 14 of the high-capacity energy storage battery 1, the circulation voltage input from an external power supply to the single battery is isolated, and the fault expansion caused by the input of the external power supply when the single high-capacity energy storage battery 1 fails is avoided. Meanwhile, the pressure is released by pulling the corrugations with the compressed air and the liquid, so that after the corrugations are all pulled up by the gas and the pressure of the single battery, the compressed air and the liquid generated by faults can be better collected, and the energy is released simultaneously.
Specifically, a plastic end cover 3 is arranged at the top of the energy release corrugated closed cavity 2; the large top surface of the energy release corrugated closed cavity 2 is matched with the plastic end cover 3 to form a closed cavity structure. Also includes 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 to reduce internal circuit faults. According to the invention, all circuit element modules except the single battery body and the pressure type pole 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 uniform modular management is convenient to realize.
Specifically, the bottom of the pressure type pole 5 is arranged in the energy release corrugated closed cavity 2; the top of the pressure type pole 5 is arranged in the plastic end cover 3, so that the bottom surface of the pressure type pole 5 is in effective contact with the pressure surface of the pole 14 of the high-capacity energy storage battery when the single battery works normally; meanwhile, when the large-capacity energy storage battery 1 is out of control due to heat, the bottom surface of the pressure type pole 5 is effectively separated from the pressure surface of the pole 14 of the large-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 cap 3, and the primary output terminal 6 is electrically connected to the output end of the DC-DC converter 7 through a wire 11; the secondary output terminal 9 is electrically connected to an output terminal of the control unit 10 through a wire 11. Through setting up secondary output terminal and secondary output terminal 9 in 3 top surfaces of plastic end cover, be convenient for realize the modular management of battery cell, be convenient for connect external power source or load to and energy storage system monitoring unit.
According to the invention, the real-time monitoring and adjusting unit and the pressure release device are additionally arranged on the high-capacity energy storage battery 1, so that the problems of system hidden danger and reliability of the energy storage system caused by single batteries are effectively reduced. An energy release corrugated closed cavity 2 is added on the upper part of the large-capacity energy storage battery 1, a pressure type pole 5 device is arranged on the energy release corrugated closed cavity 2 and is connected with the pole of the large-capacity energy storage battery 1 by adopting a pressure surface to form a passive energy release and active isolating device. A primary output end and a secondary output end of the DC-DC converter 7 are arranged on the upper portion of the insulating end cover, the primary end meets the wiring requirement of the single batteries, and the secondary end has the operation output functions of the SOC state of the batteries, the operation temperature, the voltage of the single batteries and the like, so that the monitoring requirement of the single batteries in the design of an energy storage power station is met.
Those not described in detail in this specification are within the skill of the art.
Claims (9)
1. The utility model provides an intelligence large capacity energy storage battery which characterized in that: the device comprises a high-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 pole; 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 pole; the circuit 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 device also comprises a temperature sensing element used for real-time temperature of the high-capacity energy storage battery, wherein 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 sealed cavity; the pressure type pole is arranged in the energy release corrugated closed cavity; the top of the energy release corrugated closed cavity is provided with a plastic end cover; the bottom surface of the pressure type pole is matched with the pressure surface of the pole 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; and a pressure release valve is arranged on the top surface of the high-capacity energy storage battery.
2. The intelligent large-capacity energy storage battery according to 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. An intelligent high capacity energy storage battery as claimed in claim 2, wherein: a plastic end cover is arranged at the top of the energy release corrugated closed cavity; the large top surface of the energy release corrugated closed cavity is matched with the plastic end cover to form a closed cavity structure.
4. The intelligent high-capacity energy storage battery according to claim 3, wherein: the circuit board is arranged in the plastic end cover.
5. The intelligent large-capacity energy storage battery according to claim 4, wherein: the bottom of the pressure type pole is arranged in the energy release ripple closed cavity; the top of the pressure type pole is arranged in the plastic end cover.
6. The intelligent large-capacity energy storage battery according to 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 conducting wire; and the secondary output terminal is electrically connected with the output end of the control unit through a lead.
7. The intelligent large-capacity energy storage battery according to claim 1, wherein: the temperature sensing element is arranged on the inner wall of the corrugated closed cavity.
8. The intelligent high-capacity energy storage battery according to claim 3, wherein: the circuit board is welded on the top surface of the pressure type pole.
9. The intelligent large-capacity energy storage battery according to claim 2, wherein: and the input point of the DC-DC converter is welded on the pressure type pole.
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 true CN115395150A (en) | 2022-11-25 |
| CN115395150B CN115395150B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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| JP2019041497A (en) * | 2017-08-25 | 2019-03-14 | 住友電気工業株式会社 | Power source management device |
| CN112290107A (en) * | 2020-09-14 | 2021-01-29 | 侯晓华 | Intelligent lithium ion battery packaging structure |
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2022
- 2022-09-14 CN CN202211115424.3A patent/CN115395150B/en active Active
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| JP2003157821A (en) * | 2001-11-22 | 2003-05-30 | Japan Storage Battery Co Ltd | Pressure-compensated battery |
| US20080265586A1 (en) * | 2007-04-27 | 2008-10-30 | Nathan Like | Energy storage device |
| 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 |
|---|---|
| CN115395150B (en) | 2023-10-27 |
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