CN116613405A - Battery box - Google Patents

Battery box Download PDF

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Publication number
CN116613405A
CN116613405A CN202310646147.7A CN202310646147A CN116613405A CN 116613405 A CN116613405 A CN 116613405A CN 202310646147 A CN202310646147 A CN 202310646147A CN 116613405 A CN116613405 A CN 116613405A
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CN
China
Prior art keywords
reservoir
box body
piston
conducting strip
spindle
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.)
Granted
Application number
CN202310646147.7A
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Chinese (zh)
Other versions
CN116613405B (en
Inventor
黄立伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Shaojin Plastic Products Co ltd
Original Assignee
Ningbo Shaojin Plastic Products Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo Shaojin Plastic Products Co ltd filed Critical Ningbo Shaojin Plastic Products Co ltd
Priority to CN202310646147.7A priority Critical patent/CN116613405B/en
Publication of CN116613405A publication Critical patent/CN116613405A/en
Application granted granted Critical
Publication of CN116613405B publication Critical patent/CN116613405B/en
Active legal-status Critical Current
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/488Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/673Containers for storing liquids; Delivery conduits therefor
    • H01M50/682Containers for storing liquids; Delivery conduits therefor accommodated in battery or cell casings
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy 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)
  • Aviation & Aerospace Engineering (AREA)
  • Secondary Cells (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The invention discloses a battery box, which comprises: the box body, be equipped with sealed lid on the box body, sealed covering is equipped with the air duct of intercommunication box body bottom, be equipped with the reservoir in the air duct, be equipped with the piston in the reservoir, the piston separates the reservoir into reservoir and lower air guide chamber, be equipped with the elastic component between piston bottom and the box body diapire, be equipped with the spindle in the piston, it has the conducting liquid to store in the reservoir to go up, be equipped with a pair of conducting strip on the inner wall of reservoir, one of them conducting strip connects one pole of power, and another conducting strip connects the other pole of power, it is equipped with the bubble to go up reservoir top, is equipped with the ampere meter between one of them conducting strip and the power, the external control unit of ampere meter, the spindle separates into two sets of regions with last reservoir. The invention can accurately early warn the rapid rise of the internal air pressure of the box body in advance, thereby accurately predicting the risk of explosion of the lithium battery.

Description

Battery box
Technical Field
The invention relates to the field of battery boxes, in particular to a battery box.
Background
Currently, lithium batteries are a type of batteries using a nonaqueous electrolyte solution, which uses lithium metal or a lithium alloy as a negative electrode material. With the development of science and technology, lithium batteries have become the mainstream. Lithium batteries can be broadly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable.
Lithium batteries are generally not easily exploded, but in some special cases, the explosion probability of lithium batteries is increased. The reason for explosion of the lithium battery is as follows: 1) The water content is too large: when in charging, water can react with lithium to generate lithium oxide, which can cause capacity loss of the battery cell, and the battery cell is easy to be overcharged, so that gas is generated. The decomposition of water lowers the voltage and is likely to decompose into gas during charging. The series of generated gases can increase the internal pressure of the battery cell, and when the shell of the battery cell is not born, the battery cell can explode. 2) Internal short circuit: the internal cell is short-circuited to cause large-current discharge, a large amount of heat is generated, a diaphragm is burnt out, a larger short-circuit phenomenon is caused, electrolyte is decomposed into gas, and the internal pressure is excessively high, so that the cell explosion is caused. 3) And (3) overcharging a lithium battery: when the battery cell is overcharged, the structure of the positive electrode can be changed by excessive lithium released from the positive electrode, the excessive lithium cannot be easily inserted into the negative electrode, and lithium precipitation on the surface of the negative electrode is easily caused. When the voltage reaches above 4.5V, the electrolyte can decompose to generate a large amount of gas, and explosion is caused. Thus, explosion of the lithium battery can be early warned in advance by detecting the internal air pressure. Moreover, the existing battery box cannot early warn the internal air pressure of the box body in advance, and further cannot accurately predict the risk of explosion of the lithium battery.
Disclosure of Invention
Aiming at the problems, the invention provides a battery box, which solves the defect that the prior battery box cannot early warn the air pressure in the box body in advance.
The technical scheme adopted by the invention is as follows:
a battery case, comprising: the box body, be equipped with sealed lid on the box body, sealed covering is equipped with the air duct of intercommunication box body bottom, be equipped with the reservoir in the air duct, be equipped with the piston in the reservoir, the piston separates the reservoir into reservoir and lower air guide chamber, be equipped with the elastic component between piston bottom and the box body diapire, be equipped with the spindle in the piston, it has the conducting liquid to store in the reservoir to go up, be equipped with a pair of conducting strip on the inner wall of reservoir, one of them conducting strip connects one pole of power, and another conducting strip connects the other pole of power, it is equipped with the bubble to go up reservoir top, is equipped with the ampere meter between one of them conducting strip and the power, the external control unit of ampere meter, the spindle separates into two sets of regions with last reservoir.
According to the invention, the lower air guide cavity is communicated with the box body, the piston is pushed to move upwards by the air pressure in the box body, so that the conducting part is inserted into the air bubble, the resistance of the circuit communicated with the first conducting plate, the conducting liquid, the second conducting plate and the ammeter is changed (namely, the resistance value is increased, and the current value in the ammeter is reduced), and the control unit can accurately pre-warn the air pressure in the box body in advance, so that the risk of explosion of the lithium battery is accurately predicted.
Optionally, the spindle body includes an insulating portion located below and a conductive portion located above.
Alternatively, the conductive part is partially inserted into the air bubble in a natural state.
Optionally, a transparent member is arranged on the sealing cover at the top of the liquid storage barrel.
Optionally, the transparent member faces the air bubble.
Optionally, an indicator ring is disposed in the transparent member.
Optionally, the box body is filled with inert gas, and the gas pressure in the box body is greater than the external gas pressure.
Optionally, the control unit is externally connected with an alarm or an indicator lamp.
Optionally, the front and rear ends of the spindle body abut against the front and rear end walls of the upper reservoir. The invention is provided.
Advantageous effects
1. According to the invention, the lower air guide cavity is communicated with the box body, the piston is pushed to move upwards by the air pressure rise in the box body, so that the conductive part of the spindle body is inserted into the air bubble, the resistance of the circuit communicated with the first conductive sheet, the conductive liquid, the second conductive sheet and the ammeter is changed (namely, the resistance value is increased, the current value in the ammeter is reduced), and the current value is the minimum at the moment, so that the control unit can accurately early warn the air pressure rise in the box body rapidly in advance, and further accurately predict the risk of explosion of the lithium battery.
2. According to the invention, when inert gas leakage occurs in the box body and the air pressure is reduced, so that the piston is reduced, the conductive part of the spindle body is completely separated from bubbles, at the moment, the resistance on the circuit communicated with the first conductive sheet, the conductive liquid, the second conductive sheet and the ammeter is changed, the resistance is reduced to the minimum, and the current value in the ammeter is the maximum.
3. According to the invention, the conducting part is locally inserted into the bubble in a natural state, at the moment, inert gas in the box body is not leaked, and the air pressure in the box body is not abnormally increased, at the moment, the resistances communicated with the circuits of the first conducting strip, the conducting liquid, the second conducting strip and the ammeter are the median.
4. By observing whether the air bubble is on the indicating ring, the invention can judge whether the battery box is arranged at the horizontal position of the bottom of the vehicle body. When the piston descends, the bottom of the spindle body contacts and seals the air duct, and whether gas leakage occurs can be intuitively judged by observing the positions of the bubble and the spindle body at the moment.
Drawings
Fig. 1 is a sectional structural view of a battery case of embodiment 1 of the present invention;
fig. 2 is a partially enlarged view of a portion a of the battery pack of embodiment 1 of the present invention in fig. 1;
fig. 3 is a flowchart of a battery pack control unit of embodiment 1 of the present invention.
The reference numerals in the drawings are as follows:
the box body, 2, sealed lid, 3, air duct, 4, stock solution section of thick bamboo, 5, piston, 6, go up stock solution chamber, 7, lower air duct, 8, elastic component, 9, spindle, 10, conducting strip, 11, bubble, 12, control unit, 13, insulating part, 14, conducting part, 15, transparent component, 16, instruction ring.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The technical scheme adopted by the invention is as follows:
as shown in fig. 1, 2 and 3, the present invention discloses a battery case comprising: the box body 1, be equipped with sealed lid 2 on the box body, sealed covering is equipped with the air duct 3 of intercommunication box body bottom, be equipped with reservoir 4 in the air duct, be equipped with piston 5 in the reservoir, the piston separates the reservoir into upper reservoir chamber 6 and lower air guide chamber 7, be equipped with elastic component 8 between piston bottom and the box body diapire, spindle 9 is equipped with in the piston, it has the conducting liquid to store in the upper reservoir chamber, be equipped with a pair of conducting strip 10 on the inner wall of reservoir, one of them conducting strip connects one pole of power, and another pole of power is connected to another conducting strip, upper reservoir chamber top is equipped with bubble 11, is equipped with ammeter 17 between one of them conducting strip and the power, the external control unit 12 of ammeter, spindle separates upper reservoir chamber into two sets of regions.
The spindle body comprises an insulating part 13 located below and a conductive part 14 located above. The conductive part is partially inserted into the air bubble in a natural state. A transparent piece 15 is arranged on the sealing cover at the top of the liquid storage barrel. The transparent member faces the air bubble. The transparent member has an indicator ring 16 therein. The inside of the box body is filled with inert gas, and the air pressure in the box body is larger than the external air pressure. The control unit is externally connected with an indicator lamp. The front end and the rear end of the spindle body are abutted against the front end wall and the rear end wall of the upper liquid storage cylinder.
The control unit of the present invention may employ a computer system or a PLC (programmable logic controller).
When the embodiment is implemented, the conductive part is locally inserted into the bubble in a natural state, at the moment, inert gas in the box body is not leaked, and the air pressure in the box body is not abnormally increased, and at the moment, the resistances connected to the circuits of the first conductive sheet, the conductive liquid, the second conductive sheet and the ammeter are the median.
The lower air guide cavity is communicated with the box body, the piston is pushed to move upwards by the air pressure rise in the box body, the conducting part of the spindle body is inserted into the air bubble, the resistance of the circuit communicated with the first conducting plate, the conducting liquid, the second conducting plate and the ammeter is changed (namely, the resistance value is increased, the current value in the ammeter is reduced), at the moment, the current value is the minimum value, and the control unit can accurately early warn the air pressure rise in the box body in advance, so that the risk of explosion of the lithium battery can be accurately predicted.
When inert gas leakage occurs in the box body and the air pressure is reduced, so that the piston is reduced, the conductive part of the spindle body is completely separated from bubbles, at the moment, the resistance on the circuit of the first conductive sheet, the conductive liquid, the second conductive sheet and the ammeter is changed, the resistance is reduced to the minimum, and the current value in the ammeter is the maximum.
And whether the air bubble is arranged on the indicating ring is observed, so that whether the battery box is arranged at the horizontal position of the bottom of the vehicle body can be judged. When the piston descends, the bottom of the spindle body contacts and seals the air duct, and whether gas leakage occurs can be intuitively judged by observing the positions of the bubble and the spindle body at the moment.
Example 2
The difference between this embodiment 2 and embodiment 1 is that the control unit is externally connected with an alarm.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover all equivalent structures as modifications within the scope of the invention, either directly or indirectly, as may be contemplated by the present invention.

Claims (9)

1. A battery case, comprising: the box body, be equipped with sealed lid on the box body, sealed covering is equipped with the air duct of intercommunication box body bottom, be equipped with the reservoir in the air duct, be equipped with the piston in the reservoir, the piston separates the reservoir into reservoir and lower air guide chamber, be equipped with the elastic component between piston bottom and the box body diapire, be equipped with the spindle in the piston, it has the conducting liquid to store in the reservoir to go up, be equipped with a pair of conducting strip on the inner wall of reservoir, one of them conducting strip connects one pole of power, and another conducting strip connects the other pole of power, it is equipped with the bubble to go up reservoir top, is equipped with the ampere meter between one of them conducting strip and the power, the external control unit of ampere meter, the spindle separates into two sets of regions with last reservoir.
2. A battery compartment as in claim 1 wherein the spindle includes a lower insulating portion and an upper conductive portion.
3. A battery case according to claim 2, wherein the conductive portion is partially inserted into the air bubble in a natural state.
4. A battery case according to claim 1, 2 or 3, wherein a transparent member is provided on the sealing cover at the top of the cartridge.
5. A battery compartment as in claim 4 wherein the transparent member faces the air bubble.
6. A battery compartment according to claim 1, 2 or 3, wherein the transparent member has an indicator ring therein.
7. The battery case according to claim 6, wherein the case is filled with an inert gas and the gas pressure in the case is greater than the external gas pressure.
8. A battery compartment as claimed in claim 1, 2 or 3, wherein the control unit is externally connected to an alarm or indicator light.
9. A battery pack as claimed in claim 1, 2 or 3, wherein the front and rear ends of the spindle abut the front and rear end walls of the upper reservoir.
CN202310646147.7A 2023-06-02 2023-06-02 Battery box Active CN116613405B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310646147.7A CN116613405B (en) 2023-06-02 2023-06-02 Battery box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310646147.7A CN116613405B (en) 2023-06-02 2023-06-02 Battery box

Publications (2)

Publication Number Publication Date
CN116613405A true CN116613405A (en) 2023-08-18
CN116613405B CN116613405B (en) 2023-11-03

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB332773A (en) * 1929-08-12 1930-07-31 Alexander Greswolde Seymour Sa Improvements in or relating to electrical liquid rheostats applicable to the automatic regulation of electrical quantities
JP2000036298A (en) * 1998-07-21 2000-02-02 Furukawa Battery Co Ltd:The Molten-lead liquid level control device
JP2000149888A (en) * 1998-11-13 2000-05-30 Mitsubishi Cable Ind Ltd Pack case for lithium battery
CN101740742A (en) * 2009-12-30 2010-06-16 河南新天科技有限公司 Cell box capable of early warning power failure and intelligent water meter
WO2012105864A1 (en) * 2011-02-04 2012-08-09 Vladimirskiy Vladimir Konstantinovich Method and apparatus for heating current-conducting liquid, and heat-generating installation
CN206541902U (en) * 2017-02-24 2017-10-03 江苏省科华光电科技有限公司 A kind of lithium battery with anti-explosion mechanism
US20180246233A1 (en) * 2015-10-29 2018-08-30 Framatome Gmbh Sample container, sampling system, nuclear power plant and corresponding operating method
CN114759313A (en) * 2022-05-31 2022-07-15 裘秋君 Thin film lithium battery
CN114798704A (en) * 2022-05-05 2022-07-29 湖南金凯循环科技有限公司 High-recovery-rate lithium battery recycling production device and use method thereof
CN218731698U (en) * 2022-10-31 2023-03-24 深圳市兴源伟业电子有限公司 Storage battery with leakage detection function
CN116130820A (en) * 2023-03-20 2023-05-16 山西梓志敏贺科技有限公司 Lithium battery electrolyte recovery device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB332773A (en) * 1929-08-12 1930-07-31 Alexander Greswolde Seymour Sa Improvements in or relating to electrical liquid rheostats applicable to the automatic regulation of electrical quantities
JP2000036298A (en) * 1998-07-21 2000-02-02 Furukawa Battery Co Ltd:The Molten-lead liquid level control device
JP2000149888A (en) * 1998-11-13 2000-05-30 Mitsubishi Cable Ind Ltd Pack case for lithium battery
CN101740742A (en) * 2009-12-30 2010-06-16 河南新天科技有限公司 Cell box capable of early warning power failure and intelligent water meter
WO2012105864A1 (en) * 2011-02-04 2012-08-09 Vladimirskiy Vladimir Konstantinovich Method and apparatus for heating current-conducting liquid, and heat-generating installation
US20180246233A1 (en) * 2015-10-29 2018-08-30 Framatome Gmbh Sample container, sampling system, nuclear power plant and corresponding operating method
CN206541902U (en) * 2017-02-24 2017-10-03 江苏省科华光电科技有限公司 A kind of lithium battery with anti-explosion mechanism
CN114798704A (en) * 2022-05-05 2022-07-29 湖南金凯循环科技有限公司 High-recovery-rate lithium battery recycling production device and use method thereof
CN114759313A (en) * 2022-05-31 2022-07-15 裘秋君 Thin film lithium battery
CN218731698U (en) * 2022-10-31 2023-03-24 深圳市兴源伟业电子有限公司 Storage battery with leakage detection function
CN116130820A (en) * 2023-03-20 2023-05-16 山西梓志敏贺科技有限公司 Lithium battery electrolyte recovery device

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