CN106450581A - Heating system for cylindrical battery module, and battery module - Google Patents
Heating system for cylindrical battery module, and battery module Download PDFInfo
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- CN106450581A CN106450581A CN201610778429.2A CN201610778429A CN106450581A CN 106450581 A CN106450581 A CN 106450581A CN 201610778429 A CN201610778429 A CN 201610778429A CN 106450581 A CN106450581 A CN 106450581A
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- heating
- cylindrical battery
- battery module
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 165
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000741 silica gel Substances 0.000 claims abstract description 27
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 18
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229960001866 silicon dioxide Drugs 0.000 description 22
- 230000007423 decrease Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- IAIWVQXQOWNYOU-FPYGCLRLSA-N nitrofural Chemical compound NC(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 IAIWVQXQOWNYOU-FPYGCLRLSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
Classifications
-
- 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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
-
- 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
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a heating system for a cylindrical battery module. The heating system comprises at least one heating system connected with a battery management system, wherein the heating system comprises an insulating fixed plate provided with at least one accommodating hole, wherein at least one or more parallel PTC heating elements for heating the battery module and detecting the battery module temperature are arranged in each accommodating hole; metal electrode plates are arranged on the two side surfaces of each PTC heating element; pins are arranged on the left and right sides of each metal electrode plate; the pins are provided with inserting pins; the inserting pins are arranged on the surface of the insulating fixed plate; the heating system is connected with the battery management system through the inserting pins via a wire; heat conducting silica gel is arranged on the outer side surfaces of the metal electrode plates separately; and more than two concave parts are arranged on the outer side surface of each piece of the heat conducting silica gel. The invention also provides the battery module, which comprises the heating system. Compared with the prior art, another temperature sensor is not required, so that setting of parts is reduced while the production cost is lowered.
Description
Technical field
The present invention relates to a kind of electrokinetic cell, especially it is used for pure electric vehicle or hybrid electric vehicle and storage electric energy for a kind of
The heating system of cylindrical battery module of equipment and battery modules.
Background technology
Pure at present electronic and oil and electricity hybrid vehicle more and more, existing and following pure electricity in our life
Dynamic and oil and electricity hybrid vehicle adopts lithium-ion-power cell mostly as power resources, and lithium ion battery is under high and low temperature
Performance, reliability and life-span compared with room temperature when have decline by a relatively large margin.When at low ambient temperatures using battery modules it is necessary to
Heated to battery modules using heating system, make battery reach suitable temperature and start charge/discharge operation again.Lithium ion battery
In use for some time, each battery has different degrees of aging module, and its internal resistance can become big, and Individual cells in-core hinders
Amplitude of variation, considerably beyond meansigma methodss, can produce substantial amounts of heat in electric discharge, and especially under hot environment, heat is easier long-pending
Gather it is necessary to make it radiate in time, make battery reach suitable temperature.Equally, the battery modules of power energy storage equipment there is also
Problem above.
Battery mode of heating in the market is generally circulating liquid heating or warm braw heating and in battery ambient cloth
Put PET heating film, silica gel heating plate, PTC heating plate etc., circulating liquid mode of heating has that complex structure, efficiency is low, reliability
The shortcomings of low, high cost, warm braw heating has that programming rate is slow, non-uniform temperature, easily produce heat localization, energy consumption height etc. and lack
Point, both modes use fewer and feweri, more is using heating sides such as PET heating film, silica gel heating plate or PTC heating plates
Formula.
PET heating film and silica gel heating plate both modes have the disadvantage that：PET heating film and silica gel heating intralaminar part are sent out
Thermal part is lectrothermal alloy wire, and temperature is wayward, and local temperature difference is big, and fragile insulating barrier causes to leak electricity, thus easily causing
Security incident；
PTC heating plate has the disadvantage that：(as the application for a patent for invention of Application No. 201510634026.6).
1st, heating rate is slow, and local temperature difference is big
Because PTC heating plate is attached to the outside of set of cells, heat transfer is longer to set of cells centre required time, makes
Obtain set of cells centre heating rate slower；Also result in that each battery temperature difference of set of cells is larger, the performance to battery and
There is considerable influence in life-span.
2nd, the efficiency of heating surface is low and big energy-consuming
PTC heating plate can be a big chunk heat transfer to battery-pack exterior casing and air because of the structure of its two sides all heatings
In, cause the efficiency of heating surface low, consume electric energy many.
3rd, poor stability
PTC heating plate is placed in battery modules surface, set of cells or battery positive and negative electrode will extend to case surface, plus
Hot plate heats to positive and negative electrode, then conducts heat to module internal, and a heating plate typically contacts multiple set of cells or electricity simultaneously
The positive and negative electrode of Chi Xin, if heating plate life-time service is in vibration environment, its insulating outer layer can be impaired, then may lead to battery
Positive and negative electrode short circuit, causes cell damage, causes security incident.
4th, PTC heating plate weight is big, and PTC heating plate adopts aluminium alloy as the machine of fixing PTC heater element and radiating
Component, unit intensity is big, increased the overall weight of battery modules, reduces the specific energy parameter of battery modules, affects vehicle
Course continuation mileage.
For cylindrical battery, each shortcoming above is especially apparent, because its shell is in cylinder, the contact surface with heating plate
Long-pending very little, the efficiency of heat transfer is worse, in order to bring up to the thermal efficiency, typically adopts gap to increase the larger silicagel pad of weight
Mode.But being unable to effectively solving problem increases the gross weight of set of cells simultaneously.
To be used with external multiple temperature sensors with upper heater, temperature sensor transfers signals to battery simultaneously
Management system (i.e. BMS), battery management system (i.e. BMS) judges whether to allow heater to work, and makes battery be maintained at rational temperature
Degree scope.
Content of the invention
It is used for cylindrical battery module heating system and battery modules it is an object of the invention to provide a kind of, skill to be solved
Art problem is so that heating is quicker, improves the efficiency of heating surface, shortens heat time heating time, reduces energy expenditure so that battery
Module is more safe and reliable, and battery management system passes through to read the resistance value of PTC heating element heater, thus obtaining battery modules in real time
In each battery unit current operating temperature, other temperature sensors need not be reused, decrease the setting of part, reduce
Production cost.
For solving the above problems, one aspect of the present invention provides a kind of heating system for cylindrical battery module, bag
Include the heating system being connected with battery management system, described heating system is provided with least one, heating system includes at least having
The insulation fixing plate of one accommodating hole；What the accommodating in the hole of insulation fixing plate was provided with least one or more parallel connection, there is heating
And the PTC heater element of detection battery modules temperature, PTC heater element can be laid in the accommodating hole of insulation fixing plate；?
Metal electrode board is respectively equipped with the both side surface of PTC heater element, being respectively arranged on the left side and the right side of every piece of metal electrode board is drawn
Foot, pin 8 is provided with the inserting foot for connecting with wire or adjacent heating system, and inserting foot is arranged on the table of insulation fixing plate
On face；While the both side surface on the surface of two pieces of metal electrode boards and PTC heater element fits tightly, PTC heater element
Positive pole also contact with one of metal electrode plate surface, negative pole is contacted with the surface of another piece of metal electrode board, heating system
System is connected with battery management system through wire by inserting foot, is respectively equipped with thermal conductive silicon on the outer surface of metal electrode board
Glue, the lateral surface of each heat conductive silica gel is respectively equipped with plural recess, the section of recess is arc.
Further, described insulation fixing plate is a rectangular slab, the height of insulation fixing plate and the length of cylindrical battery
Degree is equal.
Further, described insulation fixing plate is made up of plastic material.
Further, described PTC heater element is PTC-ceramic thermistor element；
Further, it is provided with insulation board between two neighboring recess.
Further, described heating system, at least provided with two, passes through inserting foot mutual between two neighboring heating system
Series connection.
Further, described accommodating hole is provided with more than two, and two accommodating holes are disposed on insulation fixing plate, in phase
It is equipped with insulation division, each accommodating in the hole is provided with a PTC heater element between two adjacent accommodating holes.
Another aspect of the present invention provides a kind of battery modules, including the cylindrical battery of rectangular array, also includes
Described heating system, is equipped with gap between two neighboring cylindrical battery, constitutes between adjacent rows cylindrical battery
Gap in the ranks, constitutes row gap between adjacent two row cylindrical batteries；Heating system located at gap in the ranks or row gap in, be arranged on
The cylindrical battery of recess location corresponding section is arranged in recess, and the shell of this cylindrical battery and recess fit tightly.
Further, be expert at gap or row gap in be also filled with Heat Conduction Material.
Further, described Heat Conduction Material is heat conductive silica gel.
The present invention compared with prior art, arranges plug-in each other between the battery in cylindrical battery module
, so that connecting without using traditional wire between multiple heating system, usage quantity is flexible and changeable for modular heating system,
And conduction reliability is high, the outside of heating system is provided with the Heat Conduction Material fitted with battery case so that heating system can
Transfer heat to each battery, not only heating rate is fast, and the temperature difference between each battery is little, improve the efficiency of heating surface, reduce energy
Amount consumes, and after battery modules normal work, battery management system passes through to read the resistance value of PTC heating element heater, thus in real time
Obtain the current operating temperature of each battery unit in battery modules, other temperature sensors need not be reused, decrease part
Setting, reduce production cost.
Brief description
Fig. 1 is the internal structure schematic diagram of the heating system of the present invention.
Fig. 2 is the first attachment structure schematic diagram between the battery modules heating system of the present invention and battery modules.
Fig. 3 is the second attachment structure schematic diagram between the battery modules heating system of the present invention and battery modules.
Fig. 4 is the third attachment structure schematic diagram between the battery modules heating system of the present invention and battery modules.
Fig. 5 is the 4th kind of attachment structure schematic diagram between the battery modules heating system of the present invention and battery modules.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in further detail.
As shown in figure 1, the heating system for cylindrical battery module of the present invention, including the cell tube with prior art
The heating system 2 that reason system connects, it includes the insulation fixing plate 5 at least with an accommodating hole 10, and insulation fixing plate 5 is permissible
For a rectangular slab, its equal length highly with cylindrical battery, insulation fixing plate 5 can be made up of plastic material；In insulation
It is provided with the PTC with heating and detection battery modules temperature of at least one or more parallel connection in the accommodating hole 10 of fixed plate 5
Heater element 4, PTC heater element 4 is preferably PTC-ceramic thermistor element；PTC heater element 4 can be laid in insulation and fix
In the accommodating hole 10 of plate 5, insulation fixing plate 5 is used for fixing PTC heater element 4, and it has certain mechanical strength, has and compares
High temperature tolerance, has insulating properties；Metal electrode board 6 is respectively equipped with the both side surface of PTC heater element 4, often nugget genus
Battery lead plate 6 be respectively arranged on the left side and the right side pin 8, pin 8 is provided with inserting foot 13, and inserting foot 13 is located at insulation fixing plate 5
On surface, it is serially connected by inserting foot 13 between two neighboring heating system 2；In 5 two pieces of metal electrode boards 6 of insulation fixing plate
The both side surface of surface and PTC heater element 4 while fit tightly, the positive pole of PTC heater element 4 also with one of gold
Belong to the contact of battery lead plate 6 surface, negative pole is contacted with the surface of another piece of metal electrode board 6, heating system 2 passes through inserting foot 13 through leading
Line is connected with battery management system, is respectively equipped with heat conductive silica gel 7 on the outer surface of metal electrode board 5, each heat conductive silica gel 7
Lateral surface on be respectively equipped with plural recess 9, the section of recess 9 is arc, and recess 9 is used for outer with cylindrical battery
Shell surface its there is good heat conductivity and insulating properties, heat can rapidly pass to out, can between two neighboring recess 9
It is provided with insulation board 11, insulation board 11 can be used for controlling the direction of propagation of heat.
When the working environment of battery modules is under low temperature (0 degree Celsius) state, PTC heater element 4 to battery modules plus
Heat；When battery modules are in running order, battery management system is obtained by the resistance value reading PTC heater element 4 works as
The temperature of each battery unit of front battery modules；When heating system is in not heated condition, heating system 2 is as passive battery
Heat conducting device, mutually in conduction battery unit between battery and two adjacent groups battery unit temperature, make battery modules
Interior temperature difference reduces.Temperature sensor is substituted by PTC heater element 4, decreases necessary to former setting temperature sensor
Wire, reduces the cost of battery modules.
Accommodating hole 10 is preferably provided with more than two, and two accommodating holes 10 are disposed on insulation fixing plate 4, adjacent
It is equipped with insulation division 12 between two accommodating holes 10, in each accommodating hole 10, be provided with a PTC heater element 3.
As shown in figure 3, battery modules include the cylindrical battery 1 of several rectangular arrays, two neighboring cylindrical battery 1
Between be equipped with gap, constitute gap in the ranks between adjacent rows cylindrical battery 1, between adjacent two row cylindrical batteries 1 constitute
Row gap；Described battery modules also include at least one heating system 2, and heating system 2, in gap in the ranks or row gap, is arranged
The two neighboring heating system 2 being expert in gap or row gap is connected with each other conducting by metal connector 13, and heating system 2 is excellent
Select in the gap in the ranks of cylindrical batteries 1 or the row gap located at two row positioned at battery modules center or two row, or uniformly
It is distributed in the gap between cylindrical battery 1, the recess 9 on heat conductive silica gel 7 is closely pasted with the shell of cylindrical battery 1 respectively
Close, each heating system 2 can be heated to few four cylindrical batteries being disposed adjacent 1, thermal conductive silicon rubber cushion 7 has good heat conduction
Property and insulating properties, heat can rapidly pass to out；The gap in the ranks being provided with heating system 2 or row gap is removed in battery modules
Outward, remaining in the ranks gap or row gap in be filled with Heat Conduction Material 3, Heat Conduction Material is preferably heat conductive silica gel.
The heating system 2 of the present invention is installed between each cylindrical battery 1 within battery modules, outside heating system
Shape size cell shell sizes are consistent, and its outer layer heat conductive silica gel is flexible material.Heat conductive silica gel can fully and battery core housing
It is in close contact, after metal connector 13 applied voltage of heating system, PTC heater element 4 is energized, and PTC heater element 4 produces
Heat be transmitted to metal electrode board 6 first, due to the good heat conductivility of metal, heat can run through metal electrode board 6
Conduct to heat conductive silica gel 7, heat conductive silica gel 7 conducts even heat to the battery case being in close contact again, due to battery case
For cylinder, therefore heat can dissipate rapidly, and continues diffusion by the Heat Conduction Material 3 in gap, you can passes rapidly heat
It is directed at all inside batteries, reach to the purpose of the battery heating of cylindrical battery 1, add with realizing battery modules efficient uniform
Heat.
The present invention taking the battery modules that 4 row 6 arranges as a example illustrates, but not limited to this.
As shown in Fig. 2 being the first arrangement mode of battery modules of the present invention, heating system 2 is located at battery modules both sides
Outermost gap in the ranks in, every side is provided with 3, heating system 2 heating two row totally 12 cylinder adjacent with heating system 2
Battery 1, it is ensured that the shell of each cylindrical battery 1 all can be fitted tightly with the heat conductive silica gel 7 of heating system 2, reaches and uniformly adds
The effect of heat.
As shown in figure 3, the second arrangement mode of battery modules of the present invention, heating system 2 is located at battery modules often row
In the ranks in gap, often row is equipped with 3, and the heating system 2 heating cylindrical battery 1 adjacent with heating system 2 is it is ensured that each cylinder
The shell of shape battery 1 all can be fitted tightly with the heat conductive silica gel 7 of heating system 2, reaches the effect of uniform heating.
As shown in figure 4, the third arrangement mode of the battery modules of the present invention, heating system 2 is located at located at battery modules
In the gap in the ranks of center, this is in the ranks provided with 3 heating systems 2 in gap, heating system 2 heating adjacent with heating system 2 two
Row cylindrical battery 1, is filled with Heat Conduction Material 3 in the outermost gap in the ranks of battery modules both sides, is ensureing to be located at center
The shell of two row cylindrical batteries 1 all can fit tightly with the heat conductive silica gel 7 of heating system 2, and by Heat Conduction Material 3 by heat
Amount is delivered on the shell of outermost two row cylindrical batteries 1, reaches the effect of uniform heating.
As shown in figure 5, the 4th of the battery modules of the present invention the kind of arrangement mode, heating system 2 is located at located at battery modules
In the gap in the ranks of center, this is in the ranks provided with gap between 2,2 heating systems 2 of 2 heating systems and passes through wire and plug connector
13 connections, are symmetrically arranged at this in the ranks in gap, are spaced two row cylindrical batteries 1, heating system between two heating systems 2
2 heating, four cylindrical batteries 1 adjacent with heating system 2, in battery modules in addition to the gap in the ranks being provided with heating system 2,
All it is filled with Heat Conduction Material 3 in remaining row gap and row gap, ensureing the outer of the cylindrical battery 1 adjacent with heating system 2
Shell all can be fitted tightly with the heat conductive silica gel 7 of heating system 2, and transfers heat to outermost two row by Heat Conduction Material 3
On the shell of cylindrical battery 1, reach the effect of uniform heating.
The present invention heating system in no power adstante febre, because heating system and battery unit are in same environment
Under, and it has good horizontal and vertical heat conductivity, and this structure makes heat effectively every in battery unit
Individual battery mutually quickly conducts, and therefore the temperature of PTC heater element and the temperature of battery are essentially identical.Battery management system is (i.e.
BMS) real time temperature of the battery in each battery unit can be calculated by detecting the resistance value of PTC heater element, in time
Regulate and control the working condition of whole set of cells, other temperature sensors need not be reused.
The heating system structure of the present invention and installation site are different from existing PTC heating plate, and it is built in battery modules
Between internal adjacent cylindrical battery 1, heating system directly contacts with the shell of cylindrical battery 1, adds to each battery
Heat, heat is directly conducted to each battery, thus battery heating rate is fast, and the temperature difference between each battery is little, simultaneously
Built-in structure allows its heat almost all producing pass to battery, and the efficiency of heating surface is high, consuming little energy.It is below this
The bright Experimental Comparison data with PTC heater plate effect：Table one is the heat temperature raising time of the PTC heating plate of prior art,
Table two is the heat temperature raising time of the heating system of the present invention, and, at a temperature of equivalent environment, programming rate has obvious area for both
Not.
Table 1 (- 20 DEG C of ambient temperature)
| Sequence number | 0min | 30min | 60min | 90min | 120min | Heating rate |
| 1 | -20.1℃ | -14.2℃ | 2.3℃ | 14.9℃ | 20.6℃ | 0.34℃/min |
| 2 | -19.8℃ | -15.2℃ | -8.3℃ | 1.1℃ | 8.6℃ | 0.24℃/min |
| 3 | -20℃ | -14.3℃ | 7.4℃ | 19.6℃ | 25.4℃ | 0.378℃/min |
| 4 | -20.2℃ | -15.8℃ | -5.9℃ | 3.5℃ | 11.2℃ | 0.26℃/min |
| Maximum temperature difference | 0.4℃ | 1.6℃ | 15.7℃ | 18.5℃ | 16.8℃ |
Table 2 (- 20 DEG C of ambient temperature)
| Sequence number | 0min | 30min | 60min | 90min | 120min | Heating rate |
| 1 | -20.0℃ | -0.8℃ | 17.2℃ | 32.1℃ | 42.3℃ | 0.52℃/min |
| 2 | -19.9℃ | -2.2℃ | 14.5℃ | 29.5℃ | 39.8℃ | 0.50℃/min |
| 3 | -20.2℃ | -0.4℃ | 18.2℃ | 32.6℃ | 42.8℃ | 0.53℃/min |
| 4 | -20.1℃ | -2.9℃ | 15.1℃ | 30.4℃ | 40.6℃ | 0.51℃/min |
| Maximum temperature difference | 0.3℃ | 1.5℃ | 3.7℃ | 3.1℃ | 3.0℃ |
As seen from the table, the programming rate of the present invention will be faster than the programming rate of traditional PTC heating plate.
Insulation safety is good, and the heating system of the present invention adopts heat conductive silica gel to fill PTC heating element heater and metal electrode board
It is enclosed in the insulation system of heating system center, it is ensured that the PTC heating element heater insulating properties good with battery case, interior
It is placed between the adjacent cylindrical battery of internal battery pack, two cambered surfaces that adjacent cylindrical battery contacts heating system are
Electric potential difference, that is, electric potential difference is zero, and heating element heater is built-in wherein not to have a defect making battery assembly module short circuit, no short-circuit risks,
It is different from the heater structure of the application for a patent for invention of Application No. 201510634026.6, the product structure design of the present invention is more
Plus safety.
Homogeneous heating, every in the heating system outermost heat conductive silica gel major part contact area battery modules of the present invention
The shell of individual cylindrical battery, the internal center position of heat conductive silica gel is PTC heater element, and each heater element can flexibly give 2-
The heating of 16 cylindrical batteries, temperature uniformity is good, and not and the cylindrical battery of heating system contacts also can be by between being filled in
The shell heat of heated cylindrical battery is transmitted by the Heat Conduction Material in gap, makes all of cylindrical battery all can quilt
Heating.
The heating system of the present invention can substitute traditional temperature sensor in the case of work of not generating heat, and need not make again
Use other temperature sensors.I.e. the PTC heater element of heating system is thermosensitive resistor with positive temp coefficient, can be by temperature number
Value is converted into resistance value and feeds back to battery management system (i.e. BMS), except can decide whether to allow heating system energising work
And heating after battery whether reach suitable operating temperature, simultaneously in battery normal work can real-time monitoring battery temperature
Degree, prevents temperature too high and causes security incident.And decrease wire necessary to former temperature sensor, decrease set of cells
Weight.
This heating system design is cellular construction, can be made according to cylindrical battery quantity flexible combination specific in battery bag
With each heating unit can closely, fitly coordinate assembling, and be designed with the very high metal of conductive reliability in junction and connect
Plug-in unit, each heating unit connects and can power without wire.
Claims (10)
1. a kind of heating system for cylindrical battery module, including the heating system (2) being connected with battery management system, its
It is characterised by：Described heating system (2) is provided with least one, and heating system (2) includes at least thering is an accommodating hole (10)
Insulation fixing plate (5)；Be provided with the accommodating hole (10) of insulation fixing plate (5) at least one or more parallel connection have heating with
And the PTC heater element (4) of detection battery modules temperature, PTC heater element (4) can be laid in the accommodating of insulation fixing plate (5)
In hole (10)；Metal electrode board (6), every piece of metal electrode board (6) are respectively equipped with the both side surface of PTC heater element (4)
Be respectively arranged on the left side and the right side pin (8), pin (8) is provided with the grafting for connecting with wire or adjacent heating system (2)
Foot (13), inserting foot (13) is arranged on the surface of insulation fixing plate (5)；Send out with PTC on the surface of two pieces of metal electrode boards (6)
While the both side surface of thermal element (4) fits tightly, the positive pole of PTC heater element (4) also with one of metal electrode board
(6) surface contact, negative pole is contacted with the surface of another piece of metal electrode board (6), and heating system (2) passes through inserting foot (13) through leading
Line is connected with battery management system, is respectively equipped with heat conductive silica gel (7), each heat conduction on the outer surface of metal electrode board (5)
Plural recess (9) is respectively equipped with the lateral surface of silica gel (7), the section of recess (9) is arc.
2. the heating system for cylindrical battery module according to claim 1 it is characterised in that：Described insulation is fixed
Plate (5) is a rectangular slab, the height of insulation fixing plate (5) and the equal length of cylindrical battery.
3. the heating system for cylindrical battery module according to claim 2 it is characterised in that：Described insulation is fixed
Plate (5) is made up of plastic material.
4. the heating system for cylindrical battery module according to claim 3 it is characterised in that：Described PTC heating
Element (4) is PTC-ceramic thermistor element.
5. the heating system for cylindrical battery module according to claim 4 it is characterised in that：Two neighboring recessed
It is provided with insulation board (11) between portion (9).
6. the heating system for cylindrical battery module according to claim 5 it is characterised in that：Described heating system
(2) at least provided with two, it is serially connected by inserting foot (13) between two neighboring heating system (2).
7. the heating system for cylindrical battery module according to claim 6 it is characterised in that：Described accommodating hole
(10) it is provided with more than two, two accommodating holes (10) are disposed on insulation fixing plate (4), in two adjacent accommodating holes
(10) it is equipped with insulation division (12) between, in each accommodating hole (10), be provided with a PTC heater element (3).
8. a kind of battery modules, the cylindrical battery (1) including rectangular array it is characterised in that：Also including right such as will
Seek the heating system described in 1 to 7 any one, be equipped with gap, adjacent rows cylinder between two neighboring cylindrical battery (1)
Constitute gap in the ranks between shape battery (1), between adjacent two row cylindrical batteries (1), constitute row gap；Heating system (2) is located at row
In gap or row gap, it is arranged on and the cylindrical battery (1) of recess (9) position corresponding section is arranged in recess (9), this circle
The shell of cylindrical battery (1) is fitted tightly with recess (9).
9. battery modules according to claim 8 it is characterised in that：Be expert at gap or row gap in be also filled with heat conduction material
Material (3).
10. battery modules according to claim 9 it is characterised in that：Described Heat Conduction Material (3) is heat conductive silica gel.
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| CN201610778429.2A CN106450581B (en) | 2016-08-30 | 2016-08-30 | Heating system for cylindrical battery module and battery module |
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| CN201610778429.2A CN106450581B (en) | 2016-08-30 | 2016-08-30 | Heating system for cylindrical battery module and battery module |
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| CN106450581B CN106450581B (en) | 2023-11-10 |
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| CN111628246B (en) * | 2020-06-30 | 2024-06-04 | 河南新太行电源股份有限公司 | Heat exchange device of cylindrical lithium ion battery and application method thereof |
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| CN106450581B (en) | 2023-11-10 |
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