CN109004311A - A kind of lithium battery group heat management device - Google Patents
A kind of lithium battery group heat management device Download PDFInfo
- Publication number
- CN109004311A CN109004311A CN201810630933.7A CN201810630933A CN109004311A CN 109004311 A CN109004311 A CN 109004311A CN 201810630933 A CN201810630933 A CN 201810630933A CN 109004311 A CN109004311 A CN 109004311A
- Authority
- CN
- China
- Prior art keywords
- battery
- supply fan
- cold wind
- heating
- temperature
- 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
Links
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
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- 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
Abstract
The invention discloses a kind of lithium battery group heat management devices, including ptc heater, heating supply fan, battery case body, the air duct for air flowing is provided in the battery pack box body, hot air inlet is provided on the battery case body, the hot wind after the heating supply fan driving ptc heater heating enters along hot air inlet in Battery case and along duct flows.The present invention has the advantages that heating battery when being heated to battery by hot wind, increasing heated perimeter, so that heating more uniformly, reduces the defect of prior art hot-spot；When cooling to battery, flowed in air duct by the cold wind that wind speed optimizes and take away heat, it can be with Homogeneouslly-radiating, good heat dissipation effect；And structure is simple, it is convenient, easy to spread to realize.
Description
Technical field
The present invention relates to battery thermal management technology more particularly to a kind of lithium battery group heat management devices.
Background technique
As energy-saving and emission-reduction and environmentally protective requirement increasingly improve in China, new-energy automobile has become automobile industry
Development trend.Since lithium battery has the characteristics that have extended cycle life, specific energy height, quickly-chargeable, less pollution, just gradually at
For the power resources of new-energy automobile first choice.
The charge and discharge of lithium battery are therefore very sensitive to temperature change along with electrochemical reaction.Excessively high temperature will be right
The performance generation of battery pack seriously affects, and the key indexes such as stability test, cycle life, electric voltage equalization parameter can all deteriorate.
Especially in electric car, battery pack is arranged in series and parallel by the lithium battery monomer of substantial amounts, and is generally in one
In confined space, if the heat generated cannot emit in time, internal battery pack temperature will be steeply risen, and easily cause
The mistake thermal response of battery pack, or even cause the safety accidents such as spontaneous combustion, explosion.The battery pack security incident occurred both at home and abroad at present,
It is largely because power battery pack and eventually leads to thermal runaway due to radiating not scientific during the work time.
Under cryogenic, the electrolyte in battery can solidify, and the Li+ quantity moved between positive and negative anodes is caused sharply to subtract
It is few；If charged directly to it, a large amount of lithium metal can be precipitated and be deposited on inside battery, form the sharp keen metal of corner angle
Crystalline lithium.This sharp keen crystalline lithium is easy to puncture the diaphragm between inside battery positive and negative anodes, causes positive and negative anodes short-circuit.While by
Excessively stable in the property of cryogenic conditions lower electrode material, the impedance rise of electrochemical reaction is rapid so as to cause polarization resistance
Increase, efficiency for charge-discharge and capacity sharply decline.So cannot directly charge under cryogenic to lithium battery, but answer first
Battery is switching to charge mode after being heated to optimal operating temperature point automatically.As new-energy automobile increasingly obtains in the whole world
To being widely used, lithium battery is also increasingly paid attention to and is paid close attention in the use problem of cold district；Therefore in heat management system
It is just seemed very necessary comprising low-temperature charging heating device.
Simultaneously because there are great differences for the performance of lithium battery at different temperatures, thus to battery pack carry out heat dissipation or
During heating, if the battery cell of internal battery pack different location is cooling or heating effect is different, just it will appear entire
Internal battery pack temperature distributing disproportionation causes the battery performance of different location to generate larger difference with the increase of charge and discharge number
It is different, to finally seriously affect the performance and used life of entire battery pack, or even reduce the safety of electric car and reliable
Property.Therefore heat management system should have good thermal balance ability, the as far as possible temperature difference between reduction battery cell.
Common heating means are Resistant heating, i.e., are carried out using the Joule heat of resistance to the lithium battery under low temperature pre-
Heat.This heating means need temperature control circuit to adjust the power heated and time to avoid overheat, increase heat management system
Complexity.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of lithium battery group heat management device, the devices
The battery heating of offer can reduce hot-spot or the non-uniform phenomenon of heating.
To achieve the goals above, the technical solution adopted by the present invention are as follows: a kind of lithium battery group heat management device, including
Ptc heater, heating supply fan, battery case body；The air duct for air flowing is provided in the battery pack box body, it is described
Be provided with hot air inlet on battery case body, the hot wind after the heating supply fan driving ptc heater heating along hot wind into
Air port enters in Battery case and along duct flows, so that the battery module to air duct two sides heats.
Cold air inlet is set on battery case body, evaporator, the starting of cold wind supply fan are set by cold air inlet
Driving air is flowed to evaporator afterwards, and the air after evaporator enters in battery pack box body along cold air inlet to be flowed.
Cold wind air outlet is set on battery case body, and cold wind exhaust fan is set at cold wind air outlet.
Multiple temperature sensors are set in Battery case, and the temperature sensor is connect with main control unit, the master control
Unit according to temperature sensor acquire battery pack box body in temperature data control ptc heater, heating supply fan work or
The work of cold wind supply fan, cold wind exhaust fan, evaporator is controlled according to temperature data.
The main control unit is adjusted according to the temperature difference of the battery cell nearest and farthest apart from ptc heater of acquisition
Heat the revolving speed of supply fan.
The main control unit controls the work of cold wind supply fan according to the temperature of the single battery in battery pack box body, full
When foot cooling starting, cold wind supply fan is controlled from 0 and is gradually increased revolving speed, calculate while revolving speed increases corresponding under each revolving speed
Unit time temperature fall off rate, with the maximum revolving speed control cold wind supply fan work of unit time fall off rate.
The present invention has the advantages that heating battery when being heated to battery by hot wind, increasing heating surface (area) (HS, make
It must heat more uniformly, reduce the defect of prior art hot-spot；When cooling to battery, existed by the cold wind that wind speed optimizes
Heat is taken away in flowing in air duct, can be with Homogeneouslly-radiating, good heat dissipation effect；And structure is simple, it is convenient, easy to spread to realize.
Detailed description of the invention
Below to each width attached drawing of description of the invention expression content and figure in label be briefly described:
Fig. 1 is battery pack principle of heating figure of the present invention；
Fig. 2 is battery pack cooling principle figure of the present invention.
Specific embodiment
A specific embodiment of the invention is made further detailed below against attached drawing by the description to optimum embodiment
Thin explanation.
As shown, a kind of lithium battery group heat management device, including ptc heater, heating supply fan, battery case body,
It is provided with the air duct for air flowing in battery pack box body, hot air inlet is provided on battery case body, heats supply fan
Hot wind after driving ptc heater heating enters along hot air inlet in Battery case and along duct flows, thus to battery case
Intracorporal battery module is evenly heated.The intracorporal air duct of battery case can between battery cell gap composition, in this way
Hot wind can heat each monomer along the flowing of these gaps.Hot air inlet is arranged on the side wall of Battery case, supply fan setting
By hot air inlet, ptc heater is set between supply fan and hot air inlet.Hot wind supply fan drives the flowing warp of wind
Become hot wind after crossing heater；Then due to the directed flow of wind, hot-air enter in cabinet flowing and with battery on the way
Module carries out hot transmitting, to heat all battery modules.
Cold air inlet is set on battery case body, evaporator, the starting of cold wind supply fan are set by cold air inlet
Driving air is flowed to evaporator afterwards, is entered in battery pack box body through evaporator air after cooling along cold air inlet and is flowed.
Cold wind air outlet is set on battery case body, and cold wind exhaust fan is set in cold wind exit.Cold wind air outlet, air inlet
It is arranged as hot air inlet, is separately positioned on two opposite sides of cabinet, convenient for the flowing of air.To control two
For side, cold air inlet is arranged in left side, and right side is arranged cold wind air outlet, evaporation is arranged at face cold air inlet
Device；Cold wind supply fan is arranged in the left side of evaporator and for air driving to be flowed to evaporator, and evaporator will be by around it
Air it is cooling；Then due to the directed flow of air, cold air enters in cabinet through cold air inlet to carry out with battery module
Cold and hot exchange, then flows out through cold wind air outlet and passes through cold wind exhaust fan and accelerate flowing, to realize when being cooled down
Battery is cooled down.
Multiple temperature sensors are set in Battery case, temperature sensor is connect with main control unit, main control unit according to
Temperature sensor acquires temperature data control ptc heater and heating supply fan in battery pack box body, or according to temperature number
According to the work of control cold wind supply fan, cold wind exhaust fan, evaporator.Temperature data judgement for acquisition is starting PTC heating
And corresponding supply fan still starts evaporator and corresponding cold wind supply fan.
Heating material using ptc heater as battery.PTC is a kind of positive temperature coefficient heating material, this material
Initial stage resistance very little after energization can make battery pack be rapidly heated in a short time with relatively high power；When being raised to certain temperature
After degree, PTC resistor increase is worked with smaller power, accordingly even when long-time heating will not make the excessively high of battery temperature liter, from
And it avoids battery and the danger that bulge is even exploded occurs, therefore there is reliable safety guarantee when heating.The effect of supply fan
It is the battery module that the hot-air around ptc heater is blowed to distal end, accelerates the flowing of hot-air.Main control unit is according to distance
Ptc heater adjusts the revolving speed of heating supply fan with the temperature difference of farthest battery cell recently.The temperature difference then improves greatly wind speed and adds
Fast hot-air flowing；The temperature difference is small, and appropriate reduction wind speed is to save power consumption.Battery pack temperature is excessively high when needing cooling, and fan is blown into
The hot-air of battery case body enters back into internal battery pack after evaporator absorbing and cooling temperature.Outside air after cooling exists
It flows, the heat that battery generates is taken away, to guarantee high temperature in the air duct of battery pack under the excitation of supply fan and outlet fan
The operating temperature of battery is unlikely to rise excessively high in environment.
In cooling battery temperature, the revolving speed of fan is a critically important problem, is conducive to take away although revolving speed is too fast
Heat, but cooling effect when process condenser is affected；Although revolving speed is conducive to cool down slowly excessively, heat transfer effect is influenced
Fruit.So reasonably selection rotation speed of the fan is very necessary.Main control unit is according to the temperature of the single battery in battery pack box body
Degree works to control cold wind supply fan, when meeting cooling starting, controls cold wind supply fan from 0 and is gradually increased revolving speed, in revolving speed
Corresponding unit time temperature fall off rate under each revolving speed is calculated while increase, with the maximum revolving speed of unit time fall off rate
Control the work of cold wind supply fan.Specifically, with initial velocity V when starting fan0Work records under battery pack temperature after the △ t time
Depreciation △ T1, temperature value here is multiple sensors measure using in battery pack mean temperature as reference value.Next step wind
It fans revolving speed and increases △ V, depreciation △ T at a temperature of being recorded after time △ t2；If △ T1>△T2, illustrate initial velocity V0Cooling
Effect is preferable, and revolving speed should adjust back V0；If △ T1<△T2, then illustrate larger revolving speed V0+ △ V cooling effect is more preferable, answers at this time
Increase speed for V0+ 2 △ V carry out cooling detection in next step.It repeats the above steps, until obtaining maximum temperature decreasing value △ Tmax,
Corresponding rotation speed of the fan V at this timeoptAs required best rotation speed of the fan.
Obviously present invention specific implementation is not subject to the restrictions described above, as long as using method concept and skill of the invention
The improvement for the various unsubstantialities that art scheme carries out, it is within the scope of the present invention.
Claims (6)
1. a kind of lithium battery group heat management device, it is characterised in that: including ptc heater, supply fan, battery case body are heated,
It is provided with the air duct for air flowing in the battery pack box body, is provided with hot air inlet on the battery case body, institute
Hot wind after stating heating supply fan driving ptc heater heating enters along hot air inlet in Battery case and along duct flows.
2. a kind of lithium battery group heat management device as described in claim 1, it is characterised in that: be arranged on battery case body cold
Evaporator is arranged in wind air inlet by cold air inlet, and driving air is flowed to evaporator after the starting of cold wind supply fan, through evaporating
Air after device enters in battery pack box body along cold air inlet to be flowed.
3. a kind of lithium battery group heat management device as claimed in claim 2, it is characterised in that: be arranged on battery case body cold
Wind air outlet, and cold wind exhaust fan is set at cold wind air outlet.
4. a kind of lithium battery group heat management device a method according to any one of claims 1-3, it is characterised in that: set in Battery case
Multiple temperature sensors are set, the temperature sensor is connect with main control unit, and the main control unit is acquired according to temperature sensor
In battery pack box body temperature data control ptc heater, heating supply fan work or according to temperature data control cold wind into
The work of gas fan, cold wind exhaust fan, evaporator.
5. a kind of lithium battery group heat management device as claimed in claim 4, it is characterised in that: the main control unit is according to acquisition
Apart from ptc heater recently and the temperature difference of farthest battery cell adjusts the revolving speed of heating supply fan.
6. a kind of lithium battery group heat management device as claimed in claim 4, it is characterised in that: the main control unit is according to battery
The temperature of the group intracorporal single battery of case works to control cold wind supply fan, when meeting cooling starting, controls cold wind supply fan
It is gradually increased revolving speed from 0, calculates corresponding unit time temperature fall off rate under each revolving speed, while revolving speed increases with unit
The maximum revolving speed control cold wind supply fan work of time fall off rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630933.7A CN109004311A (en) | 2018-06-19 | 2018-06-19 | A kind of lithium battery group heat management device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630933.7A CN109004311A (en) | 2018-06-19 | 2018-06-19 | A kind of lithium battery group heat management device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109004311A true CN109004311A (en) | 2018-12-14 |
Family
ID=64600517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810630933.7A Pending CN109004311A (en) | 2018-06-19 | 2018-06-19 | A kind of lithium battery group heat management device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109004311A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126676A (en) * | 2019-04-02 | 2019-08-16 | 湖州职业技术学院 | A kind of batteries of electric automobile cooling/heating apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201466113U (en) * | 2009-07-01 | 2010-05-12 | 江苏双登集团有限公司 | Secondary battery |
| CN102569857A (en) * | 2012-02-17 | 2012-07-11 | 昆山弗尔赛能源有限公司 | Application of fuzzy proportion integration differentiation (PID) algorithm in fuel cell radiating system |
| CN106099251A (en) * | 2016-08-19 | 2016-11-09 | 北京紫光瑞控科技有限公司 | From temperature control automobile batteries case |
| CN206293494U (en) * | 2016-11-17 | 2017-06-30 | 天津瑞发颖益科技有限公司 | A kind of dual temperature control battery system of electric automobile |
| CN207398205U (en) * | 2017-08-17 | 2018-05-22 | 北京理工大学 | A kind of battery case of balanced heating heat dissipation |
-
2018
- 2018-06-19 CN CN201810630933.7A patent/CN109004311A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201466113U (en) * | 2009-07-01 | 2010-05-12 | 江苏双登集团有限公司 | Secondary battery |
| CN102569857A (en) * | 2012-02-17 | 2012-07-11 | 昆山弗尔赛能源有限公司 | Application of fuzzy proportion integration differentiation (PID) algorithm in fuel cell radiating system |
| CN106099251A (en) * | 2016-08-19 | 2016-11-09 | 北京紫光瑞控科技有限公司 | From temperature control automobile batteries case |
| CN206293494U (en) * | 2016-11-17 | 2017-06-30 | 天津瑞发颖益科技有限公司 | A kind of dual temperature control battery system of electric automobile |
| CN207398205U (en) * | 2017-08-17 | 2018-05-22 | 北京理工大学 | A kind of battery case of balanced heating heat dissipation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126676A (en) * | 2019-04-02 | 2019-08-16 | 湖州职业技术学院 | A kind of batteries of electric automobile cooling/heating apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202839901U (en) | Thermal management system of power battery | |
| CN107579308A (en) | A kind of batteries of electric automobile bag heat management and temperature equalization control method | |
| CN107317065B (en) | TEC-based power battery thermal management system and control method thereof | |
| CN107863588A (en) | A kind of heat management coupled system of dynamic lithium battery group | |
| CN102403543A (en) | Thermal management method and device for power battery pack with function of automatically controlling non-steady-state temperature field | |
| CN204315687U (en) | Lithium-ion-power cell bag constant temp. heating management system | |
| CN105826619A (en) | Constant-temperature thermal management system for lithium-ion power battery pack | |
| CN205141099U (en) | Group battery and batteries of electric vehicle thermal management system | |
| CN208460926U (en) | A kind of adjustable heat weighing apparatus lithium-ion-power cell group liquid cooling system | |
| CN112133982A (en) | Temperature-controllable battery module and temperature control method thereof | |
| CN107221730A (en) | A kind of batteries of electric automobile module | |
| CN102790191B (en) | Device and method for controlling temperature of external environment of battery | |
| CN206471453U (en) | A kind of battery pouring-basket cooling system | |
| CN210092296U (en) | New energy automobile battery thermal management system | |
| CN206040906U (en) | Power lithium battery group heat management controlling means | |
| CN208781986U (en) | A kind of battery case based on heat pipe application | |
| CN108199115B (en) | Heat dissipation system of electric automobile lithium battery | |
| CN109004311A (en) | A kind of lithium battery group heat management device | |
| CN206076339U (en) | Self-control thermostatic battery case and automobile | |
| CN103647118B (en) | Battery temperature control device | |
| CN203386864U (en) | Built-in thermal management system of lithium battery pack | |
| CN206076440U (en) | A kind of battery modules heat-exchange system and electric automobile | |
| Hung et al. | Development of a thermal management system for energy sources of an electric vehicle | |
| CN209434354U (en) | Battery temperature control, battery case body, cooling cycle pipeline | |
| CN207938752U (en) | A kind of soft pack cell module with high-efficiency thermal management system matches |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |
|
| RJ01 | Rejection of invention patent application after publication |