CN110311165A - A kind of rectangular lithium ion battery and its preparation process with heating function - Google Patents
A kind of rectangular lithium ion battery and its preparation process with heating function Download PDFInfo
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- CN110311165A CN110311165A CN201910532424.5A CN201910532424A CN110311165A CN 110311165 A CN110311165 A CN 110311165A CN 201910532424 A CN201910532424 A CN 201910532424A CN 110311165 A CN110311165 A CN 110311165A
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- heating
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- temperature sensing
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- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
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- 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 of a single cell or a single battery
-
- 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
Abstract
The present invention provides a kind of rectangular lithium ion battery and its preparation process with heating function, structure include the battery main body of square shell and internal layer, and square shell is heating square shell.Preparation process includes the following steps, prepares the takeup type pole piece group being made of positive/negative plate and diaphragm；Prepare the square shell with heating function；Prepare temperature sensing device, setting temperature sensing device closes the condition of square shell heating process are as follows: temperature sensor value is between 0-25 DEG C；Pole piece group and temperature sensing device are encapsulated in above-mentioned square shell and are covered, semi-finished product battery is formed；Double of finished battery successively carries out note electrolyte, chemical conversion, aging, partial volume and post-processing, obtains the rectangular lithium ion battery with heating function.The present invention improves the capacity of rectangular lithium ion battery at low ambient temperatures, and manufacturing process is convenient to carry out, easy to produce and process.
Description
Technical field
The invention belongs to field of chemical power source, in particular to a kind of rectangular lithium ion battery and its system with heating function
Standby technique.
Background technique
Shell used in rectangular lithium ion battery mostly uses greatly conventional aluminium shell or steel shell at present, does not have heating function, this
It is affected the application of lithium ion battery at low ambient temperatures.
Someone has carried out the research of the rectangular shell of lithium battery, such as patent 201610827819.4 discloses a kind of rectangular power
The processing technology of lithium ion battery aluminum hull solves using aluminum pipe moulding process is drawn and draws square aluminium tube shell wall thickness that cannot reach
The problem of 0.5mm；Patent 201220376932.2 provides a kind of rectangular lithium ion battery shell, including battery case and shell
Lid, housing sidewall are equipped with cell inlet, and cap and cell inlet fasten；Patent 201520449792.0 provides a kind of rectangular
Lithium ion battery with aluminum shell, the internal layer of aluminum hull are aluminium layer, and the surface of aluminium layer coats PP layers.From the method having disclosed as it can be seen that mesh
Preceding research cannot achieve the heating of shell and single battery core primarily directed to the material and processing aspect of square shell.
Somebody has carried out the research of rectangular aluminum-shell battery, for example, patent CN201621293553.1 provide it is a kind of rectangular
Lithium ion battery with aluminum shell, the battery include square aluminum shell, at least two battery cores in parallel, pole, lid in rectangular aluminum hull are arranged in
Tab is respectively set in plate, connection sheet, tab, the top two sides of described at least two battery cores in parallel, and the tab top of two sides is
It is connect by connection sheet with cover board, the pole is through cover board and extends to connection sheet；Patent CN201820802490.0 is mentioned
A kind of rectangular lithium ion battery with aluminum shell, including rectangular aluminum hull have been supplied, has further included at least two naked electricity being arranged in rectangular aluminum hull
Core, at least two naked battery core are arranged in parallel.From the method having disclosed as it can be seen that current rectangular cell is all without heating function
Energy.
Summary of the invention
In order to solve the defects of prior art, the present invention provides a kind of rectangular lithium ion battery with heating function,
Including battery main body, the outside of battery main body is coated with shell, and interior of shell is provided with heating film layer, is equipped with inside battery main body
Temperature sensing device, temperature sensing device are equipped with probe, and probe is connected with a warming lead-out wire, one end of warming lead-out wire
It is through to shell exterior.
Further: the side of heating film layer towards battery main body is pasted with polymer material layer, and the other side is pasted with gold
Belong to material layer, Confucian classics material layer constitutes the surface of shell, between polymer material layer and heating film layer, heats film layer and metal material
It is bonded between the bed of material by binder.
Further: heating film layer is equipped with the positive terminal and cathode for penetrating polymer material layer and first binder layer
Terminal.
Further: heating film layer is electric heating film layer.
It is further: square shell with a thickness of 130-510 μm.
Further: temperature sensing device is connected with a temperature sensing device lead-out wire, temperature sensing device lead-out wire
Through square shell into outside air, temperature sensing device is opened or closed rectangular outer the other end by probe temperature sensor
The heating process of shell, for heating function shell for heating, probe is used for temperature-sensitive, and temperature sensing device is used in external control circuit
In receiving transducer signal and start or stop heating.
Further: setting temperature sensing device closes the condition of square shell heating process are as follows: temperature sensor value is in 0-
Between 25 DEG C.
The invention also includes the preparation processes of the above-mentioned rectangular lithium ion battery with heating function, include the following steps,
Step 1: the takeup type pole piece group that preparation is made of positive/negative plate and diaphragm, positive plate includes anode pole piece and anode
Tab, negative electrode tab include cathode pole piece and negative lug, and anode pole piece and cathode pole piece are coated with pole powder in two sides up and down, just
On anode pole piece, negative lug is welded on cathode pole piece pole tab welding, positive plate and negative electrode tab end be correspondingly formed
The inner end of bending section and interfix, positive plate and negative electrode tab is respectively formed as single coated side section, shape again after single coated side section doubling
At bending section and interfix；
Step 2: prepare have heating function square shell, choose sheet polymer material layer, heating film layer and
Metal material layer curls into rectangular tube shape, the two-sided carry out plasma electric of single side and heating film layer to polymer material layer
Dizzy processing, is respectively formed corresponding process face, chromaking processing is carried out to the circular tube external surface of metal material layer, in metal material
The circular tube external surface coating of layer or spraying adhesive, by the one side edge of the heating film layer of rectangular patch and metal material layer
The axis alignment of one, surface, around external table roll one week of metal material layer, and splices with opposite side edge and fixes, be fitted in
Metal material layer surface, then in surface coating or spraying adhesive, then by the one side edge and metal material of polymer material layer
The surface in alignment of the bed of material surrounds metal material layer external table roll one week, and splices with opposite side edge and fix, and is fitted in heating
Film surface；
Step 3: preparing temperature sensing device, temperature sensing device includes being placed in the temperature sense probe of inside battery and setting
In the heating control apparatus of external control circuit, realized by way of software programming, by hand setting and remote control setting to adding
The temperature setting of heat control device, setting temperature sensing device close the condition of square shell heating process are as follows: temperature sensor value
Between 0-25 DEG C,；
Step 4: pole piece group and temperature sensing device being encapsulated in above-mentioned square shell and covered by capsuling machine, is covered
It is equipped with aperture to be sealed at perforation with epoxy resin to be passed through the lead of temperature sensitive probe, forms semi-finished product battery,.
Step 5: double of finished battery successively carries out note electrolyte, chemical conversion, aging, partial volume and post-processing, is had
The rectangular lithium ion battery of heating function, post-processing include visual examination, charge and discharge electro-detection, heating function detection and plastic packaging.
The utility model has the advantages that the square shell with heating function is applied in rectangular lithium ion battery by the present invention, effectively mention
The high capacity of rectangular lithium ion battery at low ambient temperatures, with the cryogenic property of promotion side's lithium ion battery, electricity of the invention
Pond manufacturing process is convenient to carry out, easy to produce and process.
Detailed description of the invention
Fig. 1 is square shell partial cutaway view of the invention；
Fig. 2 is square shell perspective view of the invention；
Fig. 3 is sectional view of the invention；
Fig. 4 is perspective view of the invention；
Fig. 5 is use state circuit diagram of the invention；
Appended drawing reference: 1- polymer material layer, 2- first binder layer, 3- heat film layer, the second adhesive layer of 4-, 5- gold
Category material layer, 6- positive terminal, 7- negative terminal, 8- square shell, 9- pole piece group, 10- temperature sensing device, 11- warming are drawn
Outlet.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
The present invention provides a kind of rectangular lithium ion battery with heating function, including battery main body, battery main body
Outside is coated with shell, and interior of shell is provided with heating film layer 3, is equipped with temperature sensing device 10, temperature sense inside battery main body
Device 10 is answered to be equipped with probe, probe is connected with a warming lead-out wire 11, and one end of warming lead-out wire 11 is through to outside shell
The side in portion, heating film layer 3 towards battery main body is pasted with polymer material layer 1, and the other side is pasted with metal material layer 5, warp
Book material layer constitute shell surface, polymer material layer 1 and heating film layer 3 between, heating film layer 3 and metal material layer 5 it
Between be bonded by binder, heating film layer 3, which is equipped with, penetrates 6 He of positive terminal of polymer material layer 1 and first binder layer 2
Negative terminal 7, heating film layer 3 are electric heating film layer 3, square shell 8 with a thickness of 130-510 μm, temperature sensing device 10 connects
It is connected to 10 lead-out wire of temperature sensing device, the 10 lead-out wire other end of temperature sensing device is through square shell 8 to external sky
In gas, temperature sensing device 10 opens or closes the heating process of square shell 8 by probe temperature sensor, outside heating function
For shell for heating, probe is used for temperature-sensitive, and temperature sensing device 10 for the signal of receiving transducer and is opened in external control circuit
Begin or stop heating, setting temperature sensing device 10 closes the condition of 8 heating process of square shell are as follows: temperature sensor value is in 0-25
Between DEG C.An inductive switching temperature, such as 0 DEG C are preset to temperature sensing device 10 first；Under cryogenic conditions (0 DEG C or less),
System starts after connection circuit, if temperature sensitive probe finds internal temperature of battery less than 0 DEG C, temperature sensing device 10 is sent out
It instructs out from external power supply and takes electricity, begin to warm up；When temperature reaches 0 degree Celsius, stop heating, if environment temperature is higher than 0
DEG C, after connecting circuit, temperature sensitive probe identifies that temperature is higher than 0 DEG C, does not heat.
The invention also includes the preparation processes of the above-mentioned rectangular lithium ion battery with heating function, include the following steps,
Step 1: the takeup type pole piece group 9 that is made of positive/negative plate and diaphragm of preparation, positive plate include anode pole piece and just
Pole tab, negative electrode tab include cathode pole piece and negative lug, and anode pole piece and cathode pole piece are coated with pole powder in two sides up and down,
Positive pole ear is welded on anode pole piece, and negative lug is welded on cathode pole piece, positive plate and negative electrode tab end correspond to shape
At bending section and interfix, the inner end of positive plate and negative electrode tab is respectively formed as single coated side section, after single coated side section doubling again
Form bending section and interfix；
Step 2: prepare have heating function square shell 8, choose sheet polymer material layer 1, heating film layer 3 with
And metal material layer 5 curls into rectangular tube shape, carries out etc. to the two-sided of the single side of polymer material layer 1 and heating film layer 3
Corona of ions processing, is respectively formed corresponding process face, carries out chromaking processing to the circular tube external surface of metal material layer 5,
The circular tube external surface of metal material layer 5 coats or spraying adhesive, by the one side edge of the heating film layer 3 of rectangular patch and gold
One, the surface axis alignment for belonging to material layer 5, is spelled around external table roll one week of metal material layer 5, and with opposite side edge
Fixation is connect, 5 surface of metal material layer is fitted in, then in surface coating or spraying adhesive, then by the one of polymer material layer 1
The surface in alignment of side edge and metal material layer 5 surrounds 5 external table roll of metal material layer one week, and spells with opposite side edge
Fixation is connect, heating 3 surface of film layer is fitted in；
Step 3: preparing temperature sensing device 10, temperature sensing device 10 includes the temperature sense probe for being placed in inside battery
With the heating control apparatus for being placed in external control circuit, realized by way of software programming, by hand setting and remote control setting
To the temperature setting of heating control apparatus, the condition that temperature sensing device 10 closes 8 heating process of square shell is set are as follows: induction
Temperature value between 0-25 DEG C,；
Step 4: pole piece group 9 and temperature sensing device 10 are encapsulated in above-mentioned square shell 8 and covered by capsuling machine,
Capping is equipped with aperture and is sealed at perforation with epoxy resin with being passed through the lead of temperature sensitive probe, forms semi-finished product battery,.
Step 5: double of finished battery successively carries out note electrolyte, chemical conversion, aging, partial volume and post-processing, is had
The rectangular lithium ion battery of heating function, post-processing include visual examination, charge and discharge electro-detection, heating function detection and plastic packaging.
Embodiment 1
Step 1: according to the capacity of battery and size requirement, preparing the takeup type pole piece group being made of positive/negative plate and diaphragm
9。
Step 2: according to the capacity of battery and size requirement, prepare have heating function with a thickness of 216 μm of lithium ion
Battery square shell 8.
Step 3: preparing temperature sensing device 10, and be turned off the condition setting of 8 heating process of square shell as induction
It is 0 DEG C to temperature.
Step 4: pole piece group and temperature sensing device 10 being encapsulated in above-mentioned square shell 8 and covered, forms half
Finished battery.
Step 5: double of finished battery carries out note electrolyte, chemical conversion, aging, partial volume, post-treating and other steps, obtains certain electricity
The rectangular lithium ion battery with heating function of pressure and capacity.
Embodiment 2
Step 1: according to the capacity of battery and size requirement, preparing the takeup type pole piece group being made of positive/negative plate and diaphragm
9。
Step 2: according to the capacity of battery and size requirement, prepare have heating function with a thickness of 510 μm of lithium ion
Battery square shell 8.
Step 3: preparing temperature sensing device 10, and be turned off the condition setting of 8 heating process of square shell as induction
It is 25 DEG C to temperature.
Step 4: pole piece group and temperature sensing device 10 being encapsulated in above-mentioned square shell 8 and covered, forms half
Finished battery.
Step 5: double of finished battery carries out note electrolyte, chemical conversion, aging, partial volume, post-treating and other steps, obtains certain electricity
The rectangular lithium ion battery with heating function of pressure and capacity.
Embodiment 3
Step 1: according to the capacity of battery and size requirement, preparing the takeup type pole piece group being made of positive/negative plate and diaphragm
9。
Step 2: according to the capacity of battery and size requirement, prepare have heating function with a thickness of 248 μm of lithium ion
Battery square shell 8.
Step 3: preparing temperature sensing device 10, and be turned off the condition setting of 8 heating process of square shell as induction
It is 5 DEG C to temperature.
Step 4: pole piece group and temperature sensing device 10 being encapsulated in above-mentioned square shell 8 and covered, forms half
Finished battery.
Step 5: double of finished battery carries out note electrolyte, chemical conversion, aging, partial volume, post-treating and other steps, obtains certain electricity
The rectangular lithium ion battery with heating function of pressure and capacity.
Embodiment 4
Step 1: according to the capacity of battery and size requirement, preparing the takeup type pole piece group being made of positive/negative plate and diaphragm
9。
Step 2: according to the capacity of battery and size requirement, prepare have heating function with a thickness of 382 μm of lithium ion
Battery square shell 8.
Step 3: preparing temperature sensing device 10, and be turned off the condition setting of 8 heating process of square shell as induction
It is 15 DEG C to temperature.
Step 4: pole piece group and temperature sensing device 10 being encapsulated in above-mentioned square shell 8 and covered, forms half
Finished battery.
Step 5: double of finished battery carries out note electrolyte, chemical conversion, aging, partial volume, post-treating and other steps, obtains certain electricity
The rectangular lithium ion battery with heating function of pressure and capacity.
Embodiment 5
Step 1: according to the capacity of battery and size requirement, preparing the takeup type pole piece group being made of positive/negative plate and diaphragm
9。
Step 2: according to the capacity of battery and size requirement, prepare have heating function with a thickness of 407 μm of lithium ion
Battery square shell 8.
Step 3: preparing temperature sensing device 10, and be turned off the condition setting of 8 heating process of square shell as induction
It is 20 DEG C to temperature.
Step 4: pole piece group and temperature sensing device 10 being encapsulated in above-mentioned square shell 8 and covered, forms half
Finished battery.
Step 5: double of finished battery carries out note electrolyte, chemical conversion, aging, partial volume, post-treating and other steps, obtains certain electricity
The rectangular lithium ion battery with heating function of pressure and capacity.
Usage mode
By the positive and negative anodes in the rectangular lithium ion battery with heating function prepared, the heating film positive terminal on shell
Son 6 and negative terminal 7 and temperature sensing device lead-out wire 11 connect on electric controling part respectively, and electric controling part controls lithium
The charge and discharge of ion battery, the heating stop temperature for heating and being arranged according to temperature sensing device 10 and actual temperature numerical value stop
Heating.Meanwhile electric controling part can also connect load and power supply, to be powered and take electricity.
Implementation result
As can be seen that under cryogenic, embodiment can make the temperature of inside battery remain at default temperature in table
Near degree, and reference examples cannot achieve.Embodiment battery at low ambient temperatures hold by electric discharge with higher in terms of capacity simultaneously
Amount, though in the environment of -40 DEG C, still discharge capacity with higher, and reference examples at low ambient temperatures discharge capacity compared with
It is low.With being gradually lower for environment temperature, the capacity of reference examples is gradually reduced, and can not be discharged under -40 DEG C of environment.
At a temperature of 1 varying environment of table, implement the internal temperature of sample and control sample
At a temperature of 2 varying environment of table, implement the low temperature capacity (%) of sample and control sample
Claims (8)
1. a kind of rectangular lithium ion battery with heating function, including battery main body, it is characterised in that: the battery main body
Outside is coated with shell, and the interior of shell is provided with heating film layer,
Temperature sensing device is equipped with inside the battery main body, the temperature sensing device is equipped with probe, the probe connection
There is a warming lead-out wire, one end of warming lead-out wire is through to shell exterior.
2. a kind of rectangular lithium ion battery with heating function according to claim 1, it is characterised in that: the heating
The side of film layer towards battery main body is pasted with polymer material layer, and the other side is pasted with metal material layer, Confucian classics material layer structure
At the surface of shell, glued between polymer material layer and heating film layer, between heating film layer and metal material layer by binder
It connects.
3. a kind of rectangular lithium ion battery with heating function according to claim 2, it is characterised in that: the heating
Film layer is equipped with the positive terminal and negative terminal for penetrating polymer material layer and first binder layer.
4. a kind of rectangular lithium ion battery with heating function according to claim 2, it is characterised in that: the heating
Film layer is electric heating film layer.
5. a kind of rectangular lithium ion battery with heating function according to claim 1, it is characterised in that: described rectangular
Shell with a thickness of 130-510 μm.
6. a kind of rectangular lithium ion battery with heating function according to claim 1, it is characterised in that: the temperature
Sensing device is connected with a temperature sensing device lead-out wire, and the temperature sensing device lead-out wire other end runs through square shell
Into outside air, temperature sensing device opens or closes the heating process of square shell, heating by probe temperature sensor
Functional shell is for heating, and the probe is used for temperature-sensitive, and temperature sensing device is in external control circuit for receiving transducer
Signal simultaneously starts or stops heating.
7. a kind of rectangular lithium ion battery with heating function according to claim 6, it is characterised in that: described in setting
The condition of temperature sensing device closing square shell heating process are as follows: temperature sensor value is between 0-25 DEG C.
8. the preparation process of the rectangular lithium ion battery described in any of the above-described claim 1-7 with heating function, feature
It is: includes the following steps,
Step 1: the takeup type pole piece group that preparation is made of positive/negative plate and diaphragm, positive plate include anode pole piece and positive pole
Ear, negative electrode tab include cathode pole piece and negative lug, and the anode pole piece and cathode pole piece are coated with pole powder in two sides up and down,
Positive pole ear is welded on anode pole piece, and negative lug is welded on cathode pole piece, the positive plate and negative electrode tab end pair
Bending section and interfix should be formed, the inner end of positive plate and negative electrode tab is respectively formed as single coated side section, single coated side section doubling
After re-form bending section and interfix；
Step 2: preparing the square shell with heating function, choose polymer material layer, heating film layer and the metal of sheet
Material layer curls into rectangular tube shape, at the two-sided carry out plasma corona of the single side of polymer material layer and heating film layer
Reason, is respectively formed corresponding process face, chromaking processing is carried out to the circular tube external surface of metal material layer, in metal material layer
The coating of circular tube external surface or spraying adhesive, by the surface of the one side edge of the heating film layer of rectangular patch and metal material layer
One axis alignment, around external table roll one week of metal material layer, and splices with opposite side edge and fixes, be fitted in metal
Material surface, then in surface coating or spraying adhesive, then by the one side edge and metal material layer of polymer material layer
Surface in alignment, surround metal material layer external table roll one week, and with opposite side edge splicing fixation, be fitted in heating film layer
Surface；
Step 3: preparing temperature sensing device, temperature sensing device includes being placed in the temperature sense probe of inside battery and being placed in outer
The heating control apparatus of portion's control circuit is realized by way of software programming, by hand setting and remote control setting and is controlled to heating
The temperature setting of device processed, setting temperature sensing device close the condition of square shell heating process are as follows: temperature sensor value is in 0-
Between 25 DEG C；
Step 4: pole piece group and temperature sensing device being encapsulated in above-mentioned square shell and covered by capsuling machine, is set in capping
There is aperture, to be passed through the lead of temperature sensitive probe, sealed at perforation with epoxy resin, forms semi-finished product battery,.
Step 5: double of finished battery successively carries out note electrolyte, chemical conversion, aging, partial volume and post-processing, obtains described having
The rectangular lithium ion battery of heating function, the post-processing include visual examination, charge and discharge electro-detection, heating function detection and modeling
Envelope.
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| CN207165707U (en) * | 2017-03-13 | 2018-03-30 | 江苏华富储能新技术股份有限公司 | A kind of efficient lithium battery of temperature control type |
| CN108511832A (en) * | 2017-02-27 | 2018-09-07 | 湖南妙盛汽车电源有限公司 | A kind of lithium battery |
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Application publication date: 20191008 |