CN204464412U - For the cooling system of Vehicular battery - Google Patents
For the cooling system of Vehicular battery Download PDFInfo
- Publication number
- CN204464412U CN204464412U CN201420601265.2U CN201420601265U CN204464412U CN 204464412 U CN204464412 U CN 204464412U CN 201420601265 U CN201420601265 U CN 201420601265U CN 204464412 U CN204464412 U CN 204464412U
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- Prior art keywords
- pressure
- coolant line
- cooling system
- negative pressure
- battery
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Classifications
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/60—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
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model relates to a kind of cooling system for Vehicular battery, even if in order to provide a kind of cooling system for Vehicular battery not only reliably cooling Vehicular battery but also occur also guaranteeing when leaking the safe operation of cooling system at coolant line place, propose apply negative pressure by means of pump in the cell area of coolant line and during applied negative pressure, measured pressure compared with limiting pressure.
Description
Technical field
The present invention relates to a kind of cooling system for Vehicular battery, it comprises the cooling medium pump of at least one coolant line (transporting cooling agent by it) and the transport for cooling agent.In addition, the pressure sensor for being determined at the pressure in coolant line and the analytical equipment being bound up on pressure sensor place is provided with.
Background technology
Motor vehicle driven by mixed power and motor vehicle have the Vehicular battery being used to drive vehicle.Vehicular battery (hereinafter referred to as battery) comprises multiple battery unit, and it stands high current and a large amount of charge/discharge cycle on longer useful life.The useful life of battery and power decision ground depend on working temperature.This means, the temperature difference less with desirable temperature range can negative effect battery.In order to ensure constant optimum working temperature, prior art discloses the not only heating system for battery but also cooling system.Except passing through Air flow, the also known cooling system utilizing liquid coolant.
Thus, such as file US 20120003510 A1 illustrates a kind of thermoregulator system for Vehicular battery, and cooling agent is by being arranged in the coolant line circulation in battery wherein.The phase transformation of cooling agent is caused pointedly and cool batteries continuously by heat exchanger.
Although this illustrated solution achieves the cooling of battery, but the reliability service of cooling system is restricted.May occur that at coolant line place cooling agent may flow out and no longer maintain the cooling of battery thus with the leakage of the form of crack or fracture.
The instruction of file EP 2302727 A1 provides benefit to execute for this reason.By the known a kind of cooling system for each battery unit of this file, transport cooling agent by means of pump by coolant line wherein.Cooling agent is preferably circulated by coolant line in mistake pressure.Leakage is inferred when monitoring the pressure in pipeline by pressure sensor and fall under stress.
But this cooling system also has the shortcoming in fail safe.The overvoltage occurred in coolant line does not stop cooling agent to flow out from leakage.Contrary: cooling agent is extruded by from pipeline.The cooling agent of this outflow irreversibly can damage battery and trigger short circuit.
Summary of the invention
Even if therefore the object of this invention is to provide a kind of cooling system with coolant line not only reliably cooling Vehicular battery but also occur also guaranteeing when leaking the safe operation of cooling system at coolant line place.
This object utilizes a kind of cooling system according to claim 1 to realize.Favourable form of implementation in addition of the present invention is the content of dependent claims.
Cooling system according to the present invention comprises at least one coolant line, and it is in thermo-contact with Vehicular battery in cell area.Carry out transporting fluid cooling agent by means of pump and pass through coolant line.This is outside equipped with pressure sensor, uses it to the pressure be determined in coolant line.Analytical equipment is linked with this pressure sensor again, and pressure measured thus can be passed to analytical equipment place.Pump allows to apply negative pressure in the cell area of coolant line.This means, in coolant line, produce the pressure being less than the ambient pressure of about 1000hPa.In addition, analytical equipment is set up to and makes the pressure that measured by pressure sensor under applied negative pressure compared with limiting pressure.
This passing through measured pressure and limiting pressure compares the leakage that deducibility goes out coolant line.In trouble-free coolant line, the pressure measured should roughly corresponding to applied negative pressure.Depositing in the case of a leak, the pressure increase in pipeline, because produce the pressure balance with surrounding environment.Analytical equipment is by picking out this with comparing of limiting pressure.Cooling agent is remained in coolant line as far as possible because applied subnormal ambient air is sucked when leaking.The outflow of cooling agent and the overwhelming majority can be prevented from.Because cooling agent continues circulation in coolant line, maintain the cooling of battery in addition.Result avoids the uncontrolled temperature at battery place to raise.At least may guarantee the operation of battery thus on the shorter time period, such as, in order to drive towards repair shop.
In order to cool, coolant line is in thermo-contact with battery in cell area.The region that cell area not only can be included in the region in battery but also can be included in outside battery.Because must guarantee thermo-contact, the cell area of coolant line should be positioned near battery.Coolant line preferably directly extends through battery, such as, along battery unit.It is also possible that coolant line directly abuts in the battery container place arranged for battery, to ensure the thermo-contact with battery thus.The parts of coolant line and cooling system form closed circulation, transport cooling agent wherein by means of pump.At this, coolant line can have branch or be provided with multiple coolant line.
The pump and coolant line arranged for transporting cooling agent and generation negative pressure is linked.This pump can be piston pump, diaphragm pump or other be suitable for the pump of this object.Cooling agent is aspirated by pump and is then transported and passes through coolant line.The flowing stream of the circulation of cooling agent is formed in like fashion by closed coolant line itself.The flowing of cooling agent is become to make pressure drop by the frictional influence in coolant line and relative ambient pressure forms negative pressure.The size of applied negative pressure is determined at the pressure of the porch of pump.In order to apply significant negative pressure, inlet pressure must be corresponding less and be under ambient pressure.The negative pressure applied is preferably lower than 800hPA, is preferably lower than 700hPa.Therefore, it is possible to reliably carry out detecting leakage and the cooling agent overwhelming majority does not flow out from coolant line.Via the adjustment of the inlet pressure of pump, the negative pressure applied can the change of simple realization be possible.Thus it is contemplated that acetyl additionally being reduced by the pressure in the situation lower pipeline of analytical equipment detecting leakage.As a result, be extended for the pressure balanced time between coolant line and surrounding environment.Therefore, guarantee the cooling of battery more for a long time.
In coolant line, additionally can affect negative pressure by means of restriction (Drossel).This means, it provides flow resistance, and the pressure thus in pipeline reduces.The design of restriction have impact on the size of the negative pressure applied in coolant line.One durable of restriction and the form of cost advantages are the narrow of coolant line.At this, coolant line narrows in cell area.Preferably, coolant line is formed with the branch of the form of tubule.These tubules not only reduce pressure, and in addition because its wider distribution obtains the best cooling of battery.Due to the branch that these narrow, flowing velocity and friction improve, and pressure reduces thus.In addition, the narrow of the local of coolant line or the additional component in coolant line are also possible.Also additional friction is produced thus and pressure drop.By such restriction, in coolant line, apply constant negative pressure when pump work.By realizing variable pressure adjusting at the valve at coolant line place.Such choke valve provides the different cross section of coolant line and friction valve according to adjustment and correspondingly provides different negative pressure.This restriction is especially arranged on to the transition part place of cell area or in cell area at coolant line place.Negative pressure is applied in like fashion and can detecting leakage in this region in the cell area of coolant line.Cooling agent remains in coolant line by this negative pressure.Avoid thus battery be cooled agent damage.
Pressure in coolant line measures by means of pressure sensor.For this reason, pressure sensor is arranged on coolant line place, preferably in the cell area of coolant line or in its vicinity.Result ensures that the pressure quickly and reliably picked out due to the leakage of coolant line in cell area changes.Can consider equally to utilize this pressure sensor or other pressure sensor for calibrating applied negative pressure.This means, when there is intact coolant line, gaging pressure under the specific inlet pressure of pump and/or the position of choke valve, it works as the reference for applied negative pressure.This means, the negative pressure applied is corresponding to the pressure recorded.This calibration periodically can repeat and such as be stored in analytical equipment.
In the continuous service of cooling system, the negative pressure that pressure sensor applies according to the state estimating of coolant line or pressure unlike this.This measured pressure is delivered to analytical equipment place by pressure sensor, and this analytical equipment is set up to and is compared with limiting pressure by measured pressure.For this reason, limiting pressure is stored and can be called by analytical equipment.Limiting pressure can be used as constant value existence or the function as the size about applied negative pressure.One simple possibility is to determine that limiting pressure is greater than applied negative pressure.In this case, when measured pressure is close or pick out leakage when going beyond the limit of pressure.The value that limiting pressure is for this reason preferably constant and being on applied negative pressure.In like fashion, do not need the periodicity of limiting pressure to configure and with the mating of applied negative pressure.It is equal with the set negative pressure applied that another possibility is to make limiting pressure.Value for applied negative pressure is such as passed through calibrate known and be stored in analytical equipment.If there is the leakage of coolant line, the pressure increase in pipeline and the pressure of determination of pressure sensor on applied negative pressure.Measured pressure compares with limiting pressure by analytical equipment, record significant deviation and infer the leakage of coolant line thus.
When recording leakage, preferably export corresponding signal by analytical equipment.This signal can be received by display unit and be transferred to passenger as the sense of hearing or visual alarm signal.The control unit place signal of analytical equipment being issued to vehicle can be considered equally.The direct manipulation of vehicle functions can be realized in like fashion.Such as it is possible that weaken or cut through completely the driving of battery in the case of a leak.
One preferred form of implementation comprises the analytical equipment be additionally linked with pump.Therefore, the control of pump can be born by analytical equipment on the one hand.The coupling of the negative pressure applied can realize thus in a straightforward manner.On the other hand, analytical equipment obtains about pump when with the information of what intensity transport cooling agent.Correspondingly directly may infer the size of the negative pressure applied in coolant line.
If there is leakage, usually pass through applied negative pressure and be drawn in coolant line by air, it mixes with cooling agent.The volume because cooling agent-air mixture improves should be isolated from coolant line.For this reason, cooling system can have the equalizing reservoir be connected with coolant line.Utilize this equalizing reservoir, cooling system can remain in operation when leaking less and ensure the cooling of battery.
One preferred form of implementation of cooling system comprises temperature sensor, and it to be arranged in coolant line or in its vicinity.This temperature sensor is suitable for measuring the temperature in coolant line.Not only monitor the cooling effect of the abundance of cooling agent thus, and improve comparing by analytical equipment and limiting pressure.When temperature rises, the pressure in coolant line also rises.Namely the pressure measured by pressure sensor also improved when coolant line is intact.Consider with this pressure differential of applied negative pressure and the wrong report avoided about leaking by understanding temperature when comparing with limiting pressure.In addition, temperature sensor provides the temperature of monitoring battery and records the possibility left of optimum temperature range rapidly.Appropriate action can be taked reduce subsequently or improve temperature.
Accompanying drawing explanation
The present invention is elaborated below according to preferred embodiment:
Fig. 1 show schematically show the intercept according to cooling system of the present invention being arranged in Vehicular battery place.
Embodiment
Cooling system shown in Figure 1 is suitable for the cooling of Vehicular battery 1.Battery 1 comprises multiple module of battery unit 11 and is surrounded by battery container 12.This cooling system has coolant line 2, and it has multiple branch 23.By coolant line, transport cooling agent by means of pump 3.In order to cool, coolant line 2 is in thermo-contact with battery 1 in cell area 21.In cell area 21, coolant line 2 extends closely along battery container 12 and in battery 1 between module 11.Guarantee that coolant line 2 is with the thermo-contact of battery 1 with therefore by the cooling effect of cooling agent thus.In coolant line 2, be furnished with pressure sensor 4, it is determined at the pressure in coolant line 2.Pressure sensor 4 is linked with analytical equipment 5 (it receives the information about measured pressure) again.By means of pump 3, cooling agent is transported by coolant line 2 on flow direction 22.Subsequently, negative pressure is applied to coolant line 2 place in cell area 21.If be applied with negative pressure, analytical equipment 5 is received the pressure that measured by pressure sensor 4 and it is compared with limiting pressure.
This compares and allows to infer leakage at coolant line 2 place.If coolant line 2 is in complete state, the pressure measured is roughly corresponding to applied negative pressure.And depositing in the case of a leak, the pressure measured is higher than applied negative pressure.This by analytical equipment 5 by with limiting pressure compare to come identification.Due to applied negative pressure, air arrives cooling agent continuation circulation in coolant line 2 in coolant line 2 by leaking.Utilize according to cooling system of the present invention, correspondingly not only reliably pick out the leakage of coolant line 2, and the outflow preventing cooling agent in addition and the damage of battery 1 be accompanied by this.By the lasting circulation of cooling fluid in coolant line 2, in regular hour section, maintain cooling in the case of a leak in addition.
Pump 3 transports cooling agent by coolant line 2.Therefore, cooling agent circulates and the stream be formed on flow direction 22 in the coolant line 2 forming closed circulation.Pressure in coolant line 2 not only depends on flowing velocity but also depends on the friction of cooling agent.The size of pressure is especially determined by the pressure of the entrance 31 at pump 3.Inlet pressure correspondingly must be lower, thus apply the pressure being less than ambient pressure.The change of the negative pressure applied is possible with this approach by changing inlet pressure.Analytical equipment 5 by with the inlet pressure of pump 3 connection control pump 3 and the size of therefore applied negative pressure.Reduce inlet pressure in the case of a leak.Thus, cooling agent can be maintained in coolant line on the longer time period.The cooling of battery remains more of a specified duration.In addition, there is by connecting pump 3 and analytical equipment 5 possibility size of applied negative pressure be stored in analytical equipment 5.Such as, the coupling of limiting pressure can be realized in like fashion.
The branch 23 narrowed affects the negative pressure in coolant line 2.In these narrow, flowing velocity and the friction of cooling agent improve, pressure drop thus.Thus can with simple and the mode of cost advantages produces negative pressure when other coupling or the other component of not carrying coolant pipeline 2.In addition, the edge of cell area 21 is provided with restriction 6, it additionally improves friction and reduces pressure further.By these measures, in the cell area 21 of coolant line 2, apply significant negative pressure.
Limiting pressure is stored in analytical equipment 5 as constant amount.Limiting pressure to be on applied negative pressure under ambient pressure.By means of analytical equipment 5, measured pressure is compared with limiting pressure.If be applied with negative pressure at intact coolant line 2 place, the pressure measured is under limiting pressure.If but coolant line 2 has leakage, the pressure increase measured and the pressure that oversteps the extreme limit.In a preferred form of implementation, the negative pressure applied is about 700hPa.Possible limiting pressure is in the size of about 800hPa.In like fashion, recorded less pressure differential by analytical equipment 5 and therefore also picked out the minimum leakage at coolant line 2 place.When overstepping the extreme limit pressure, analytical equipment 5 passes the signal to display unit 51 place.The sense of hearing and visual cues are then issued to passenger place by display unit 51.Signal passengers is in the leakage at coolant line 2 place in like fashion.
Claims (10)
1., for a cooling system for Vehicular battery (1), it has:
At least one coolant line (2), it to be in described Vehicular battery (1) in thermo-contact and to transport cooling agent by it in cell area (21),
For the pump (3) of the transport of described cooling agent,
For being determined at the pressure sensor (4) of the pressure in described coolant line (2),
With analytical equipment (5), itself and described pressure sensor (4) are linked,
It is characterized in that,
Negative pressure can be applied in the cell area of described coolant line (2) (21) by means of described pump (3),
And described analytical equipment (5) is set up to and is compared with limiting pressure by measured pressure during applied negative pressure.
2. cooling system according to claim 1, is characterized in that, the negative pressure applied is less than 800hPa, is preferably less than 700hPa.
3. cooling system according to claim 1 and 2, is characterized in that, described coolant line (2) has at least one restriction (6).
4. cooling system according to claim 3, is characterized in that, described coolant line (2) narrows at least in part in described cell area (21).
5. cooling system according to claim 3, is characterized in that, described restriction (6) is choke valve.
6. cooling system according to claim 1 and 2, is characterized in that, described limiting pressure to be on applied negative pressure and to be steady state value.
7. cooling system according to claim 1 and 2, is characterized in that, described limiting pressure exists as the function of the size about applied negative pressure.
8. cooling system according to claim 1 and 2, is characterized in that, described analytical equipment (5) issues a signal to display unit (51) place when picking out the leakage of described coolant line (2).
9. cooling system according to claim 1 and 2, is characterized in that, described analytical equipment (5) and described pump (3) are linked.
10. cooling system according to claim 1 and 2, is characterized in that, is furnished with equalizing reservoir at described coolant line (2) place.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013221137.6A DE102013221137B3 (en) | 2013-10-17 | 2013-10-17 | Cooling system for a vehicle battery |
| DE102013221137.6 | 2013-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204464412U true CN204464412U (en) | 2015-07-08 |
Family
ID=51685309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420601265.2U Active CN204464412U (en) | 2013-10-17 | 2014-10-17 | For the cooling system of Vehicular battery |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204464412U (en) |
| DE (1) | DE102013221137B3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680113A (en) * | 2016-03-25 | 2016-06-15 | 柳州孔辉汽车科技有限公司 | Temperature management control system of electromobile power battery |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015220095B3 (en) * | 2015-10-15 | 2017-02-09 | Volkswagen Aktiengesellschaft | Cooling system for at least one component of a vehicle and method for operating such a cooling system |
| US20180123201A1 (en) * | 2016-10-28 | 2018-05-03 | Inevit, Llc | Battery module cooling tube including an integrated turbulator component and method thereof |
| FR3101201B1 (en) * | 2019-09-24 | 2023-07-14 | Psa Automobiles Sa | BATTERY PACK |
| DE102022104201A1 (en) * | 2022-02-22 | 2023-08-24 | Kautex Textron Gmbh & Co. Kg | Temperature control system and motor vehicle |
| FR3134922A1 (en) * | 2022-04-22 | 2023-10-27 | Plastic Omnium Clean Energy Systems Research | Battery thermal regulation system |
| US20240059136A1 (en) * | 2022-08-22 | 2024-02-22 | Oshkosh Corporation | Systems and methods for battery thermal management on a vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9093726B2 (en) * | 2009-09-12 | 2015-07-28 | Tesla Motors, Inc. | Active thermal runaway mitigation system for use within a battery pack |
| US20120003510A1 (en) * | 2010-06-30 | 2012-01-05 | Nissan Technical Center North America, Inc. | Vehicle battery temperature control system and method |
-
2013
- 2013-10-17 DE DE102013221137.6A patent/DE102013221137B3/en active Active
-
2014
- 2014-10-17 CN CN201420601265.2U patent/CN204464412U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680113A (en) * | 2016-03-25 | 2016-06-15 | 柳州孔辉汽车科技有限公司 | Temperature management control system of electromobile power battery |
| CN105680113B (en) * | 2016-03-25 | 2018-04-10 | 柳州孔辉汽车科技有限公司 | Electric automobile power battery temperature treatment control system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013221137B3 (en) | 2014-10-30 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |