CN107834632A - A kind of battery bag - Google Patents
A kind of battery bag Download PDFInfo
- Publication number
- CN107834632A CN107834632A CN201711096998.XA CN201711096998A CN107834632A CN 107834632 A CN107834632 A CN 107834632A CN 201711096998 A CN201711096998 A CN 201711096998A CN 107834632 A CN107834632 A CN 107834632A
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- Prior art keywords
- battery
- battery pack
- super
- voltage
- bag
- 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.)
- Pending
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 239000003973 paint Substances 0.000 claims abstract description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 17
- 229910052744 lithium Inorganic materials 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 13
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000004079 fireproofing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H02J2007/0067—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
Abstract
The invention provides a kind of battery bag, including active equalization system, super-charge super-discharge protection switch and the master controller that multiple battery packs, the sheet metal of heat-insulating, fire-preventing and each battery pack being connected in series are correspondingly arranged；Multiple battery component layers are arranged under the overlay；Sheet metal is arranged between the battery pack of adjacent two layers, and is fitted and connected in negative pole towards its that layer of battery pack, is scribbled expanding fire-proof paint in the one side towards battery electrode or is scribbled expanding fire-proof paint on its two sides；Master controller is controlled to active equalization system and super-charge super-discharge protection switch.The active equalization system of the battery bag can effectively reduce voltage difference of the battery pack during charging and discharging, prevent that battery bag is overcharged and overdischarge.Simultaneously as not using electrical/electronic to switch in battery bag comes control electric current loop, eliminate electric current and the potential safety hazard for producing heat and bringing is switched by electrical/electronic.
Description
Technical field
The present invention relates to the technical field of battery manufacture, more particularly, to a kind of battery bag.
Background technology
Lithium ion battery has that durability is good, has extended cycle life and the advantages of innocuous substance, it is substituted in clean energy resource
It is widely used in kind.With the decline of lithium battery price, lithium ion battery is in dynamic bicycle and golf cart
In have started to progressively substitute lead-acid accumulator.
Lithium ion battery generally includes anode, negative electrode, dividing plate and electrolyte.Modern lithium ion battery is usually using graphite material
Material is used as anode, and transition metal oxide is as negative electrode.During charge discharges, lithium ion passes between a cathode and an anode
It is defeated.The voltage of general single lithium battery is in 2V between 5V.Therefore, target voltage and capacity to be realized, it is necessary to by multiple batteries
Connect and be together in parallel use.
In general, the energy density of each battery, self-discharge rate and internal resistance are likely to difference.When battery is used in series
When, capacity, the self-discharge rate of battery are different by the voltage for causing each battery with the difference of internal resistance.With the charging of battery, hold
Measure that the voltage of less battery is very fast by increase ratio, the voltage of the larger battery of capacity will rise slow.So, capacity is smaller
Battery be more likely overcharged.When the cell is discharged, the voltage of the larger battery of capacity can the less battery of specific capacity
Voltage reduce it is slower, so cause the less battery of capacity to be more likely overcharged.
Because lithium battery is generally sensitive to overcharge and overdischarge, and overcharge and overdischarge will damage lithium battery circulation
Performance.Meanwhile overcharge possibly even causes battery fire.
In order to prevent lithium battery super-charge super-discharge, people control the working voltage scope of lithium battery using battery protecting plate.
The circuit protection plate is generally made up of the control chip and electronic switch of detection cell voltage, wherein electronic switch be used for connect and
Disconnecting circuit.The electric current of all discharge and recharges will pass through the electronic switch on control panel.And these electronic switches are generally by CMOS tube
Form.
The radiating for handling electronic switch well is to ensure a key factor of lithium battery safety.Because ohm heat is I2R
（Square * resistance of current strength）, with the increase of circuital current, the heat production of electronic switch will dramatically increase.Therefore, in difference
Battery bag application in, battery management system need it is individually designed according to its battery current use range.If overcurrent-overvoltage
Conservative management is not good at, and can often trigger fire.In addition, increase electronic switch cost would generally increase battery management system in systems
Overall manufacturing cost.
Therefore, it is necessary to the battery bag device of existing lithium battery is improved and optimized, it is a kind of effective to design
Prevent that super-charge super-discharge is electric, and be easy to the battery bag repaired, had a safety feature.
The content of the invention
In order to solve above mentioned problem existing for prior art, the invention provides a kind of battery using modular battery group
Bag, active equalization system, the active equalization system can effectively reduce battery pack and charge corresponding to setting in each battery pack
With the voltage difference in discharge process, prevent that battery bag is overcharged and overdischarge.Simultaneously as do not used in battery bag
Other electrical/electronics switch such as metal-oxide-semiconductor comes control electric current loop, eliminates electric current and switchs generation heat band by electrical/electronic
The potential safety hazard come.
To achieve these goals, the invention provides following technical scheme：
A kind of battery bag, including be connected in series multiple battery packs, the sheet metal of heat-insulating, fire-preventing, be correspondingly arranged with each battery pack
Active equalization system, super-charge super-discharge protection switch and master controller；The multiple battery component layers are arranged under the overlay；The gold
Category piece is arranged between the battery pack of adjacent two layers, and is fitted and connected in negative pole towards its that layer of battery pack；The sheet metal
Expanding fire-proof paint is scribbled in the one side towards battery electrode or scribbles expanding fire-proof paint on its two sides；The master
Dynamic equalizing system, for reducing the voltage difference between multiple battery packs；The super-charge super-discharge protection switch receive overcharge/
It is triggered during overdischarge signal；The master controller is controlled to active equalization system and super-charge super-discharge protection switch.
It is in hierarchal arrangement state between battery pack, and is connected in series, gold is provided between the battery of adjacent two layers
Belong to piece, the sheet metal is fitted and connected in negative pole towards its that layer of battery pack, and is scribbled in the one side towards battery electrode swollen
Bulging fireproof coating, especially buckling type steelwork coating；Further, sheet metal can also its two sides be coated with dilatancy
Fireproof coating.These coating can absorb certain heat, and heated while, fireproof coating volumetric expansion play every
The effect of heat, while prevent battery in parallel in battery pack from triggering chain failure.
When the battery in battery pack catches fire, the block of battery can open in effective space, and so catch fire battery
Without departing from battery pack structure, make other battery packs of battery bag will not be impacted.
In the measure of prevention battery overcharge/overdischarge, the battery bag employs master controller control active equalization system
System, so as to carry out the balance of voltage to the battery pack of voltage difference be present；If the voltage of battery pack is beyond the safe operation of battery
Scope, master controller then disconnect super-charge super-discharge protection switch, and then cutoff circuit, so as to effectively prevent battery bag be overcharged and
Overdischarge, improve the safety in utilization of lithium battery.
As further describing for technical scheme, also connected between the multiple battery pack by signal wire,
When any one battery pack reaches overcharge/cross put state after, the battery pack, which will be sent, overcharges/crosses discharge signal via signal wire transmission
To other battery packs, and it is eventually transferred to master controller.
It is this transmission be cascade, i.e. a battery pack send overcharge/cross discharge signal, other battery packs will all receive this
Signal, and pass up to the master controller of battery bag.Master controller and then by controlling active equalization system, to whole battery
The voltage of bag is balanced.
As further describing for technical scheme, the active equalization system includes voltage checking chip and electricity
Press balance module, the voltage of the corresponding battery pack of voltage checking chip measurement and judging whether exceedes charge threshold or less than putting
Electric threshold value；The balance of voltage module carries out balanced to the voltage of multiple battery packs.
The voltage management of battery bag is to control the voltage range of operation of battery pack in the operational envelope less than battery
It is interior.When the voltage of battery pack exceeds range of operation, but is located at the operational envelope of battery, the voltage of this battery pack differs
Cause, electric voltage equalization is carried out by the balance of voltage module of battery pack.
If the voltage checking chip in active equalization system detects that the voltage of corresponding battery pack has exceeded charge threshold
Or less than discharge threshold, that is, the operational envelope of battery is exceeded, the detection chip will send overcharge/overdischarge letter
Number, and the voltage checking chip of cascade is transmitted to by signal wire, the master controller of battery bag is eventually transferred to, master controller will be sent out
Go out alarm signal, and disconnect super-charge super-discharge protection switch, and then cutoff circuit, protect battery bag.
The battery pack of this battery bag is balanced using active equalization system to voltage, is not used and is electrically or electronically opened
Close such as MOS electronic switches, that is, the electric current for flowing through battery pack be will not pass through and electrically or electronically switch, and this will be eliminated electrically or electronically
The potential safety hazard brought due to producing amount of heat is switched, reaches the purpose of protection lithium battery.
As further describing for technical scheme, LED is additionally provided with each battery pack, when the electricity
Pressure detection chip detects that the voltage of corresponding battery pack exceedes charge threshold or less than discharge threshold, concurrent excess of export overcharge threshold value
Or during less than discharge threshold signal, the LED of the battery pack will be shinny；Between the battery pack and super-charge super-discharge protection switch
The LEDs of all battery packs also will be shinny.
Master controller receives overcharge/overdischarge signal that voltage checking chip is sent, when then sending alarm signal,
The LED for being arranged on battery pack will be shinny, at the same time all electricity between the battery pack and super-charge super-discharge protection switch
The LED of pond group also will be shinny, gives user reminding, and this enables a user to the battery pack for readily finding overcharge/overdischarge.
If battery pack fails, it is changed.
As further describing for technical scheme, battery bag is provided with 4 battery packs, 4 battery packs
It is connected in series and is arranged by upper and lower two layers, the thickness of the sheet metal is 1mm.A kind of knot as the battery bag of the present invention
Structure, the battery bag employ 4 Battery pack groups, and be arranged in two layers setting, per Battery pack group using 72 and lithium battery, are being layered
Battery pack between be provided with 1mm sheet metal, the sheet metal to scribble expansion steel-structure fireproofing coating.Researcher sends out in experiment
Existing, the battery bag is safe while stable use, and when the single lithium battery of battery pack therein catches fire, can have
Effect blocking situation of catching fire spreads vertically and horizontally.
As further describing for technical scheme, the cell parallel connection in the battery pack.
As further describing for technical scheme, connected phase by electrode connector between the battery pack
Connect.
Battery bag is using the cell parallel in battery pack, the connected mode connected between battery pack, makes the battery strings of battery bag
Being connected in parallel becomes easy.And battery bag avoids the deficiency radiating of MOS electronic switches resistance to pressure without using MOS electronic switches
The bad situation for causing to catch fire occurs.
As further describing for technical scheme, the battery of battery pack is cylindricality lithium battery.
Based on above-mentioned technical scheme, the technique effect that the present invention obtains is：
（1）Battery bag provided by the invention, corresponding battery pack is carried out using active equalization system in cell voltage management
Electric voltage equalization, electricity not will not pass through using electrically or electronically switch such as MOS electronic switches, that is, the electric current for flowing through battery pack
Gas or electronic switch, this will eliminate the potential safety hazard for electrically or electronically switching and being brought due to producing amount of heat, reaches protection lithium
The purpose of battery.
（2）The battery bag of the present invention is if the voltage of battery pack has exceeded charge threshold or less than discharge threshold, i.e., super
When having crossed the operational envelope of battery, master controller will send alarm signal and disconnect super-charge super-discharge protection switch so that use
Family can readily find the battery pack of overcharge/overdischarge, and easily the battery pack of failure can be changed.
（3）The battery bag of the present invention, the sheet metal being arranged between the battery of adjacent two layers, towards battery electrode
The expansion shape fire-resistant coating for steel structure simultaneously scribbled or two sides scribble fireproof coating.The coating can be inhaled when battery catches fire
Receive certain heat, and heated while, heat-insulated effect is played in fireproof coating volumetric expansion, while prevents in battery pack
Battery in parallel triggers chain failure, so as to ensure the overall security of battery bag.
Brief description of the drawings
Fig. 1 is the structural representation of the battery pack of the battery bag of the present invention.
Fig. 2 is the partial structurtes enlarged drawing of the battery pack of the battery bag of the present invention.
Fig. 3 is battery pack connection and the schematic diagram of battery management of the battery bag of the present invention.
Embodiment
For the ease of understanding the present invention, the present invention is more fully retouched below in conjunction with accompanying drawing and specific embodiment
State.The better embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, and
It is not limited to embodiments described herein.On the contrary, the purpose for providing these embodiments is made in disclosure of the invention
Hold the more thorough and comprehensive understood.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Embodiment 1
Fig. 1 and Fig. 2 sets forth the structural representation of the battery pack of the battery bag of the present embodiment and local schematic enlarged-scale view, figure
3 be the battery pack connection of the battery bag of the present invention and the schematic diagram of battery management.With reference to reference to 1 ~ Fig. 3 of figure, a kind of battery bag, bag
Include the sheet metal 2 of the battery pack 1 and heat-insulating, fire-preventing in layered arrangement.In the present embodiment, battery bag is arranged to be connected in series in
Battery pack A, battery pack B, battery pack C and battery pack D together, wherein battery pack A and battery pack B are located at upper strata, battery pack C and
Battery pack D is located at lower floor, can be connected in series together by electrode connector between battery pack, and each internal battery pack
Battery is then connected in parallel.It is provided with 4 battery packs in this battery bag altogether, 72 cylindricality lithium ions in parallel in each battery pack
Battery, cylindricality lithium ion battery as needed could be arranged to 18650 batteries.
As shown in Fig. 2 battery pack A and battery pack D positive pole are above, negative pole is located at lower section；Battery pack B and battery pack
C negative pole is above, and positive pole is located at lower section.Spacing can be installed between the battery pack of layering, spacing can not also be stayed.Need
It is noted that sheet metal 2 is provided between upper and lower two layers of battery pack, while sheet metal 2 is fitted and connected in negative pole direction
Its that layer of battery pack.It is 1mm sheet metals that two panels thickness is provided between the battery pack of the present embodiment, and wherein piece of metal piece pastes
Battery pack A bottom is connected to, piece of metal piece is amplexiformed in battery pack C top in addition.Sheet metal 2 is towards battery electrode
Expansion steel-structure fireproofing coating is simultaneously scribbled, forms fireproof coating layer 21.Certainly, sheet metal 2 can also apply at its two layers
There is dope layer, be further ensured that flameproof effect.
It should be noted that the fireproof coating layer 21 that the expansion steel-structure fireproofing coating is formed can absorb certain heat
Amount, and heated while, heat-insulated effect is played in fireproof coating volumetric expansion, while prevents battery in parallel in battery pack
Trigger chain failure.
When the battery in battery pack catches fire, the block of cylindrical battery is opened in effective space, and so catch fire battery
Without departing from battery pack structure, make other battery packs of battery bag will not be impacted.Between being installed between every layer of battery pack
Away from when, this effective space of opening then is further ensured that.
With reference to figure 3, in the battery management system of battery bag, also connected between multiple battery packs by signal wire 11, often
Individual battery pack 1 is correspondingly arranged on active equalization system 3, is additionally provided with super-charge super-discharge protection switch 4 and master controller 5.Always
Controller 5 is electrically connected with active equalization system 3, super-charge super-discharge protection switch 4, and active equalization system 3 and super-charge super-discharge are protected
Shield switch 4 is controlled.
The present embodiment provides the voltage management of battery bag, is to control the voltage range of operation of battery pack less than battery
In operational envelope.When the voltage of battery pack exceeds range of operation, but is located at the operational envelope of battery, this battery
The voltage of group is inconsistent, and electric voltage equalization is carried out by the active equalization system 3 of battery pack 1.In prevention battery overcharge/overdischarge
In measure, the battery bag employs master controller 5 and controls active equalization system 3, so as to the progress of the battery pack of voltage difference be present
The balance of voltage.
If the voltage of battery pack, beyond the operational envelope of battery, master controller 5 then disconnects super-charge super-discharge protection
Switch 4, and then cutoff circuit, so as to effectively prevent battery bag to be overcharged and overdischarge, improve the safe to use of lithium battery
Property.
It should be noted that in active equalization system 3, including voltage checking chip 31 and balance of voltage module 32, electricity
The voltage of the corresponding battery pack of the pressure measurement of detection chip 31 simultaneously judges whether to exceed charge threshold or less than discharge threshold.
If the voltage checking chip 31 in active equalization system 3 detects that the voltage of corresponding battery pack has exceeded charging threshold
Value or less than discharge threshold, that is, exceeded the operational envelope of battery, the voltage checking chip 31 will send overcharge/
Overdischarge signal, and the voltage checking chip of cascade is transmitted to by signal wire, the master controller 5 of battery bag is eventually transferred to, always
Controller 5 will send alarm signal, and disconnect super-charge super-discharge protection switch 4, and then cutoff circuit, protect battery bag.
Because the battery pack 1 of this battery bag is balanced to voltage using active equalization system 3, using electrically or
Electronic switch such as MOS electronic switches, that is, the electric current for flowing through battery pack will not pass through and electrically or electronically switch, and this will eliminate electric
Or the potential safety hazard that electronic switch is brought due to producing amount of heat, reach the purpose for protecting lithium battery.
Further, it is additionally provided with LED in each battery pack（Do not marked in figure）, when voltage checking chip 31 detects
Voltage to corresponding battery pack exceedes charge threshold or less than discharge threshold, sends more than charge threshold or believes less than discharge threshold
Number.
Now, master controller receives overcharge/overdischarge signal that voltage checking chip is sent, and then sends alarm signal
Number when, the LED for being arranged on battery pack will be shinny, at the same time the institute between the battery pack and super-charge super-discharge protection switch
The LED for having battery pack also will be shinny, gives user reminding, and this enables a user to the electricity for readily finding overcharge/overdischarge
Pond group.If battery pack fails, it is changed.
A kind of battery bag using modular battery group that the present embodiment provides, it is main corresponding to setting in each battery pack
Dynamic equalizing system, the active equalization system can effectively reduce voltage difference of the battery pack during charging and discharging, prevent battery
It is coated with overcharge and overdischarge.Simultaneously as do not have to control using other electrical/electronics such as metal-oxide-semiconductor switch in battery bag
Current loop, eliminate electric current and the potential safety hazard for producing heat and bringing is switched by electrical/electronic.
The battery bag of the present embodiment is safe, and scalability is strong, the metal being arranged between bilevel battery pack
Piece, in the expansion shape fire-resistant coating for steel structure that the one side towards battery electrode scribbles.The coating can be inhaled when battery catches fire
Receive certain heat, and heated while, heat-insulated effect is played in fireproof coating volumetric expansion, while prevents in battery pack
Battery in parallel triggers chain failure, so as to ensure the overall security of battery bag.
The structure example and explanation of the above content only present invention, its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these obviously replace shape
Formula belongs to protection scope of the present invention.
Claims (8)
- A kind of 1. battery bag, it is characterised in that including be connected in series multiple battery packs, the sheet metal of heat-insulating, fire-preventing, with it is each Active equalization system, super-charge super-discharge protection switch and the master controller that battery pack is correspondingly arranged；The multiple battery component layers are arranged under the overlay；The sheet metal is arranged between the battery pack of adjacent two layers, and is fitted and connected in negative pole towards its that layer of battery pack； The sheet metal scribbles expanding fire-proof paint in the one side towards battery electrode or scribbles expansion fire-proof on its two sides Coating；The active equalization system, for reducing the voltage difference between multiple battery packs；The super-charge super-discharge protection switch is triggered when receiving overcharge/overdischarge signal；The master controller is controlled to active equalization system and super-charge super-discharge protection switch.
- 2. battery bag according to claim 1, it is characterised in that also connected between the multiple battery pack by signal wire Connect, when any one battery pack reaches overcharge/cross put state after, the battery pack, which will be sent, overcharges/crosses discharge signal via signal wire Other battery packs are passed to, and are eventually transferred to master controller.
- 3. battery bag according to claim 1, it is characterised in that the active equalization system include voltage checking chip and Balance of voltage module, the voltage of the corresponding battery pack of voltage checking chip measurement simultaneously judge whether to exceed charge threshold or are less than Discharge threshold；The balance of voltage module carries out balanced to the voltage of multiple battery packs.
- 4. battery bag according to claim 3, it is characterised in that LED is additionally provided with each battery pack, when described Voltage checking chip detects that the voltage of corresponding battery pack exceedes charge threshold or less than discharge threshold, concurrent excess of export overcharge threshold Value or during less than discharge threshold signal, the LED of the battery pack will be shinny；Positioned at the battery pack and super-charge super-discharge protection switch it Between the LEDs of all battery packs also will be shinny.
- 5. battery bag according to claim 1, it is characterised in that battery bag is provided with 4 battery packs, 4 batteries Group is connected in series and arranged by upper and lower two layers, and the thickness of the sheet metal is 1mm.
- 6. battery bag according to claim 1, it is characterised in that the cell parallel connection in the battery pack.
- 7. battery bag according to claim 1, it is characterised in that connected phase by electrode connector between the battery pack Connect.
- 8. according to any described battery bag of claim 1 ~ 7, it is characterised in that the battery of battery pack is cylindricality lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711096998.XA CN107834632A (en) | 2017-11-09 | 2017-11-09 | A kind of battery bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711096998.XA CN107834632A (en) | 2017-11-09 | 2017-11-09 | A kind of battery bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107834632A true CN107834632A (en) | 2018-03-23 |
Family
ID=61654900
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711096998.XA Pending CN107834632A (en) | 2017-11-09 | 2017-11-09 | A kind of battery bag |
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| CN (1) | CN107834632A (en) |
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| CN102301560A (en) * | 2009-01-30 | 2011-12-28 | Sk新技术 | Charge equalization apparatus and method for series-connected battery string |
| CN106785225A (en) * | 2017-03-14 | 2017-05-31 | 合肥国轩高科动力能源有限公司 | Passive protection battery module structure and preparation method thereof |
| CN207339374U (en) * | 2017-11-09 | 2018-05-08 | 威艾能源（惠州）有限公司 | A kind of battery pack |
-
2017
- 2017-11-09 CN CN201711096998.XA patent/CN107834632A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621131A (en) * | 2008-07-01 | 2010-01-06 | 株式会社日立制作所 | Battery system |
| CN102301560A (en) * | 2009-01-30 | 2011-12-28 | Sk新技术 | Charge equalization apparatus and method for series-connected battery string |
| CN101830181A (en) * | 2010-01-11 | 2010-09-15 | 李光明 | Multi-effect power module for electric vehicle |
| CN106785225A (en) * | 2017-03-14 | 2017-05-31 | 合肥国轩高科动力能源有限公司 | Passive protection battery module structure and preparation method thereof |
| CN207339374U (en) * | 2017-11-09 | 2018-05-08 | 威艾能源（惠州）有限公司 | A kind of battery pack |
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