CN205992572U - A kind of lithium ion battery cell protection device - Google Patents
A kind of lithium ion battery cell protection device Download PDFInfo
- Publication number
- CN205992572U CN205992572U CN201620484752.4U CN201620484752U CN205992572U CN 205992572 U CN205992572 U CN 205992572U CN 201620484752 U CN201620484752 U CN 201620484752U CN 205992572 U CN205992572 U CN 205992572U
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- China
- Prior art keywords
- housing
- lithium ion
- voltage
- ion battery
- protection device
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a kind of lithium ion battery cell protection device, it includes housing, negative terminal, positive terminal, alarm lamp, pressure transducer and controller；Described housing is made using stainless steel material, it is designed with groove on housing left surface and right flank, it is raised that housing front is provided with fish scale-shaped, housing front is provided with window and window is located at immediately below projection, and negative terminal is fixedly mounted on the top surface of housing, and positive terminal is fixedly mounted on the top surface of housing, pressure transducer is arranged in housing, alarm lamp is arranged in the installing hole of housing, and controller is arranged in housing and controller is near housing bottom, and inner walls are provided with reinforcement.
Description
Technical field
This utility model is related to a kind of cell art, specifically, particularly to a kind of lithium ion battery
Battery core protection device.
Background technology
Lithium ion battery has the advantages that specific energy is high, has a safety feature, low stain, has been achieved with increasingly
It is widely applied, is not only applied only to some common telecommunications fields, also gradually lead in power and energy storage
Domain is applied.Rectangular lithium ion battery is an important branch of lithium ion battery, due to rectangular cell tool
Have the advantages that volume utilization is high, it is convenient to combine, all occupy very big application percentage in every field.Lithium from
There is certain pressure (empirical data 0.3～0.6MPa) in sub- battery inside of battery in charge and discharge process,
At the same pressure, lifting surface area is bigger, and the deformation of battery shell wall is more serious.Cause the weight of cell expansion
Want reason：Gas is produced, battery internal gas pressure raises, due to rectangular cell during forming SEI during chemical conversion
Planar structure voltage endurance capability is poor, thus results in housing distortion；During charging, electrode material lattice parameter changes,
Cause electrode expansion, electrode expansion power acts on housing, cause battery container to deform；During high temperature storage, few
Amount is electro-hydraulic to decompose and because temperature effects gas pressure increases, and causes battery container to deform.Former in three above
The case swells causing because of middle electrode expansion are main reasons.The tympanites problem of rectangular cell is one and leads to
Disease, particularly high-capacity square lithium ion battery are even more serious, battery tympanites can cause the internal resistance of battery to increase,
The electro-hydraulic exhausted even casing rupture of local, has severely impacted safety and the cycle life of battery.
Utility model content
Technical problem to be solved in the utility model is, for above-mentioned deficiency of the prior art, to disclose
A kind of lithium ion battery cell protection device, it adopts reinforcing rib structure to improve the tensile strength of housing, can
With effective oxygen blast cyanidation suppressing battery, can effectively prevent the stress deformation of battery core using pressure transducer.
This utility model solves its technical problem and be employed technical scheme comprise that：A kind of lithium ion battery cell is protected
Protection unit, including housing, negative terminal, positive terminal, alarm lamp, pressure transducer and controller；Described shell
Body is made using stainless steel material, described housing left surface and right flank is designed with groove, described shell
Body front is provided with fish scale-shaped projection, and described housing front is provided with window and window is located at immediately below projection,
Described negative terminal is fixedly mounted on the top surface of housing, and described positive terminal is fixedly mounted on the top surface of housing,
Described pressure transducer is arranged in housing, and described alarm lamp is arranged in the installing hole of housing, described control
Device is arranged in housing and controller is near housing bottom, and described inner walls are provided with reinforcement.
As a kind of preferred implementation of the present utility model, described controller is sampled with current signal by voltage
Module, voltage and current sampling signal modulate circuit, single-chip microcomputer and signal processing module composition, described voltage
It is connected with current sampling signal modulate circuit with voltage with current signal sampling module, described voltage and electric current are adopted
Sample signal conditioning circuit and signal processing module are all connected with single-chip microcomputer, described pressure transducer and signal processing
Module connects, and described alarm lamp is connected with single-chip microcomputer.
As a kind of preferred implementation of the present utility model, described housing is provided with buzzer.
As a kind of preferred implementation of the present utility model, described housing is provided with temperature sensor.
Operation principle of the present utility model is：Detect battery electricity by installing pressure transducer in electric core shell body
Core stressing conditions, when pressure exceedes certain scope, alarm user will abnormal feelings in alarm lamp
Condition, should be processed in time；Collection voltages and current data by the way of distributed data detection, using sweeping
The mode of retouching is rapidly completed the data acquisition of each module voltage of battery；Using the charging modes of segmentation constant voltage and constant current,
But, in the lithium cell charging later stage, in order to ensure battery security and its life-span it is necessary to adopt constant-voltage charge.
Battery in discharge process when dump energy is less than certain value although still can use, but the temperature of lithium battery
Degree can drastically raise, and the damage to battery is very big, greatly reduces the service life of lithium battery.Therefore,
When controller detects dump energy and is less than certain value, battery battery core will be disconnected and connect to protect battery electricity
Core.
This utility model compared with prior art has advantages below：
A kind of lithium ion battery cell protection device disclosed in this utility model, improves shell using reinforcing rib structure
The tensile strength of body, can effectively suppress the oxygen blast cyanidation of battery；Can be effectively anti-using pressure transducer
The only stress deformation of battery core；The service life of battery battery core can effectively be improved using controller.
Brief description
Fig. 1 is a kind of structural representation of specific embodiment of the present utility model；
Fig. 2 is a kind of structure cut-away view of specific embodiment A-A of the present utility model；
Fig. 3 is a kind of circuit structure diagram of specific embodiment controller of the present utility model；
Fig. 4 is a kind of electricity of specific embodiment voltage and current sample signal conditioning circuit of the present utility model
Lu Tu；
Fig. 5 is a kind of calculation flow chart of specific embodiment battery battery core dump energy of the present utility model.
Description of reference numerals：
1：Housing, 2：Negative terminal, 3：Positive terminal, 4：Alarm lamp, 5：Pressure transducer, 6：Control
Device；
11：Reinforcement；
61：Voltage and current signal sampling module, 62：Voltage and current sampling signal modulate circuit, 63：
Single-chip microcomputer, 64：Signal processing module.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment describes this utility model specific embodiment：
It should be noted that in figure appended by this specification illustrate structure, ratio, size etc., all only in order to
Content disclosed in cooperation description, so that those skilled in the art understands and reads, is not limited to
The enforceable qualificationss of this utility model, the tune of the modification of any structure, the change of proportionate relationship or size
Whole, under not affecting this utility model effect that can be generated by and the purpose that can reach, all should still fall at this
In the range of technology contents disclosed in utility model obtain and can cover.
Meanwhile, in this specification cited as " on ", D score, "left", "right", " middle "
And the term of " " etc., be merely convenient to describe understands, and is not used to limit this utility model and can implement
Scope, being altered or modified of its relativeness, under no essence change technology contents, when being also considered as this reality
With new enforceable category.
As shown in Fig. 1～Fig. 5, it illustrates specific embodiment of the present utility model；As illustrated, this reality
With a kind of new disclosed lithium ion battery cell protection device, including housing 1, negative terminal 2, positive terminal 3,
Alarm lamp 4, pressure transducer 5 and controller 6；Described housing 1 is made using stainless steel material, institute
State and be designed with groove on housing 1 left surface and right flank, described housing 1 front is provided with fish scale-shaped projection,
Described housing 1 front is provided with window and window is located at immediately below projection, and described negative terminal 2 is fixedly mounted on
On the top surface of housing 1, described positive terminal 3 is fixedly mounted on the top surface of housing 1, described pressure transducer 5
It is arranged in housing 1, described alarm lamp 4 is arranged in the installing hole of housing 1, described controller 6 is installed
In housing 1 and controller 6 is near housing 1 bottom, described housing 1 inwall is provided with reinforcement 11.
Preferably, described controller 6 is by voltage and current signal sampling module 61, voltage and current sample letter
Number modulate circuit 62, single-chip microcomputer 63 and signal processing module 64 form, and described voltage is sampled with current signal
Module 61 is connected with current sampling signal modulate circuit 62 with voltage, and described voltage is adjusted with current sampling signal
Reason circuit 62 and signal processing module 64 are all connected with single-chip microcomputer 63, at described pressure transducer 5 and signal
Reason module 64 connects, and described alarm lamp 4 is connected with single-chip microcomputer 63.
Preferably, described housing 1 is provided with buzzer.
Using compound dump energy predicted method, that is, ampere-hour method, open circuit voltage method and 3 kinds of Kalman filtering method
Method combines, as shown in Figure 5.
First, measured the initial capacity of battery by open circuit voltage method, then use ampere-hour method and Kalman filtering method
Calculate dynamic battery remaining power, and compare the result of two methods, school is carried out to the actual capacity of battery
Just, to reach the purpose of Accurate Prediction.When battery battery core dump energy is less than certain value, controller will
Remind user to charge in time, improve the service life of battery.
Above in conjunction with accompanying drawing, this utility model preferred implementation is explained in detail, but this utility model
It is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also be
Make a variety of changes without departing from the premise of this utility model objective.
Many other can be made without departing from spirit and scope of the present utility model to change and remodeling.It should be appreciated that
This utility model is not limited to specific embodiment, and scope of the present utility model is defined by the following claims.
Claims (4)
1. a kind of lithium ion battery cell protection device it is characterised in that：Including housing, negative terminal, just
Pole, alarm lamp, pressure transducer and controller；Described housing is made using stainless steel material,
It is designed with groove, described housing front is provided with fish scale-shaped projection on described housing left surface and right flank,
Described housing front is provided with window and window is located at immediately below projection, and described negative terminal is fixedly mounted on shell
On the top surface of body, described positive terminal is fixedly mounted on the top surface of housing, and described pressure transducer is arranged on
In housing, described alarm lamp is arranged in the installing hole of housing, and described controller is arranged in housing and controls
Near housing bottom, described inner walls are provided with reinforcement to device processed.
2. as claimed in claim 1 a kind of lithium ion battery cell protection device it is characterised in that：Institute
State controller by voltage and current signal sampling module, voltage and current sampling signal modulate circuit, monolithic
Machine and signal processing module composition, described voltage is believed with current sample with voltage with current signal sampling module
Number modulate circuit connects, described voltage and current sampling signal modulate circuit and signal processing module all with list
Piece machine connects, and described pressure transducer is connected with signal processing module, and described alarm lamp is connected with single-chip microcomputer.
3. as claimed in claim 1 a kind of lithium ion battery cell protection device it is characterised in that：Institute
State and buzzer is provided with housing.
4. as claimed in claim 1 a kind of lithium ion battery cell protection device it is characterised in that：Institute
State and temperature sensor is provided with housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620484752.4U CN205992572U (en) | 2016-05-25 | 2016-05-25 | A kind of lithium ion battery cell protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620484752.4U CN205992572U (en) | 2016-05-25 | 2016-05-25 | A kind of lithium ion battery cell protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205992572U true CN205992572U (en) | 2017-03-01 |
Family
ID=58101755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620484752.4U Expired - Fee Related CN205992572U (en) | 2016-05-25 | 2016-05-25 | A kind of lithium ion battery cell protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205992572U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11165126B2 (en) | 2014-08-08 | 2021-11-02 | Techtronic Cordless Gp | Battery pouch, battery cell and method of making a pouch or battery cell |
| US11201366B2 (en) | 2018-02-27 | 2021-12-14 | Tti (Macao Commercial Offshore) Limited | Pouch battery with safety protection function |
-
2016
- 2016-05-25 CN CN201620484752.4U patent/CN205992572U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11165126B2 (en) | 2014-08-08 | 2021-11-02 | Techtronic Cordless Gp | Battery pouch, battery cell and method of making a pouch or battery cell |
| US11201366B2 (en) | 2018-02-27 | 2021-12-14 | Tti (Macao Commercial Offshore) Limited | Pouch battery with safety protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 Termination date: 20170525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |