CN102403543A - Thermal management method and device for power battery pack with function of automatically controlling non-steady-state temperature field - Google Patents
Thermal management method and device for power battery pack with function of automatically controlling non-steady-state temperature field Download PDFInfo
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- CN102403543A CN102403543A CN2010102835426A CN201010283542A CN102403543A CN 102403543 A CN102403543 A CN 102403543A CN 2010102835426 A CN2010102835426 A CN 2010102835426A CN 201010283542 A CN201010283542 A CN 201010283542A CN 102403543 A CN102403543 A CN 102403543A
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Abstract
The invention relates to a thermal management device for a power battery pack with a function of automatically controlling a non-steady-state temperature field, which comprises a battery pack, a temperature collection unit, a semiconductor cooler/heater, an external circulating fan, an internal circulating fan and a controller. A power battery monomer is arranged in the battery pack; the temperature collection unit is arranged on the pole of the power battery monomer; the semiconductor cooler/heater comprises a cold end plate and a hot end plate, automatic switching can be achieved between the two end plates, the two end plates are arranged on the shell of the battery pack, the cold end plate is arranged inside, the hot end plate is arranged outside, the cold end plate is a cooling plate and the hot end plate is a heat dissipating plate in forward powering-up, and the cold end plate is a heating plate and the hot end plate is a heat absorbing plate in reverse powering-up; the external circulating fan is arranged on the hot end plate of the semiconductor cooler/heater and is used for heat exchange between the hot end plate and external air; the internal circulating fan is arranged on the cold end plate of the semiconductor cooler/heater and is used for air circulation in the battery pack and heat exchange between the cold end plate and air in the batter pack; and the controller is used for controlling the thermal management device. Meanwhile, the invention discloses a method for implementing thermal management of the thermal management device.
Description
Technical field
The present invention relates to electric vehicle dynamic cell group heat management device and method, relate in particular to power battery pack heat management device and method with the automatic controlled function of Unsteady Temperature Field.
Background technology
The electrokinetic cell of motor vehicle need be in (temperature range is by the decision of electrokinetic cell self-characteristic) in certain preference temperature scope; Each monomer of electrokinetic cell can form astable temperature field in charge and discharge process; If electrokinetic cell temperature field of living in is too high, cross low or temperature field skewness; All will influence the charge-discharge performance of battery and the bulk life time of power battery pack, in the time of serious even influence the reliability and the fail safe of battery.
The heat management system of electrokinetic cell will guarantee that not only battery is in it and discharges and recharges in the high efficiency operating ambient temperature, but also it is avoided because heat radiation and heating cause a hidden trouble to performances such as dustproof, protection against the tide, waterproof, insulation.
For keeping the residing temperature field of power battery pack; Need heat management system can have active refrigeration (heat radiation) and heat (insulation) function; The residing temperature field of power battery pack can be rapidly heated at low temperatures; Satisfy the high-power demand that discharges and recharges of power, when power battery pack continues high current charge-discharge, can absorb the heat that electrokinetic cell is inner and binding post produces equally.
The heat management mode of battery pack mainly is to adopt air cooling and liquid cooling and adopt PTC to heat now; Because problems such as there is the bigger structure space of the degree of protection, needs that reduce battery pack in above heat management mode, increases power brick weight, the heating and cooling unit is independent are so need develop a kind of battery pack heat management system with brand new ideas.
Summary of the invention
The purpose of this invention is to provide a kind of simple, efficient, cooling and warming is integrated and have the electrokinetic cell thermal management technology of temperature equalization function; It can control the inner Unsteady Temperature Field of power battery pack automatically, and this will bring brand-new solution for the electric vehicle dynamic cell heat management.
Electrokinetic cell heat management system core apparatus of the present invention comprises: semiconductor refrigerating (heating) device, fan and temperature of powered cell acquisition process controller (can be integrated among the battery management system BMS).
The principle of semiconductor refrigerating (heating) device is as shown in Figure 3, and its cold junction and hot junction are made up of two potsherds, and the semi-conducting material of N type and P type is arranged between wherein.The operation principle of semiconductor chilling plate is: when a N type semiconductor material and P type semiconductor material be coupled to galvanic couple to the time; After in this circuit, connecting direct current; The just energy-producing transfer of ability; Electric current absorbs heat by the joint that N type element flows to P type element, becomes cold junction and flows to the joint release heat of N type element by P type element, becomes the hot junction.The heat absorption and the size of heat release are that the element logarithm through the size of electric current and semi-conducting material N, P decides.When direct current passes through, always absorb heat at cold junction, at an other end heat release is come out then.Polarity through changing electric current is carried out changeable cold junction and hot junction face.It is automobile mounted low-tension supply (DC12V/24V) that native system is selected the operating voltage of semiconductor refrigerating (heating) device.
Fan is installed in two end faces of semiconductor refrigerating (heating) device, through the circulation of fan forced draft, carries out the heat exchange of air and semiconductor refrigerating (heating) end face.Can play also simultaneously that air carries out temperature field in the balancing battery group in the circulation power battery pack at the interior circulating fan of cold junction face.
Temperature of powered cell acquisition process controller is according to the temperature range of default and temperature range and the temperature range in the next control automatically of the temperature range whole battery group.Temperature and temperature range are that its scope needs to guarantee the work that electrokinetic cell is efficient, safe by the decision of the self-characteristic of electrokinetic cell monomer.
Electrokinetic cell thermal management algorithm of the present invention is that controller carries out Treatment Analysis according to the temperature data that collects; Control semiconductor refrigerating (heating) device freeze (heating) unlatching, close, the switching and the watt level thereof of cold and hot end; The unlatching of interior external fan, close; Unsteady Temperature Field in like this can not only balanced power battery pack, and can also realize accuracy control over temperature in the power battery pack.Shown in the Unsteady Temperature Field automatic control flow chart figure accompanying drawing 2.
A kind of power battery pack heat management device and method of the present invention with the automatic controlled function of Unsteady Temperature Field.
This heat management device comprises: power brick is provided with the electrokinetic cell monomer in it; Temperature collecting cell is arranged on the pole of electrokinetic cell monomer; The semiconductor refrigerating heat-producing machine, it comprises cold junction sheet and two dististyles of hot junction sheet, can automatically switch; It is installed on the power brick housing, in the cold junction sheet is put, outside the hot junction sheet is put; When its forward energising, the cold junction sheet is a cooling piece, and the hot junction sheet is a fin; During reverse the energising, the cold junction sheet is for heating sheet, and the hot junction sheet is a heat absorbing sheet; The outer circulation fan, it is installed on the sheet of semiconductor refrigerating heat-producing machine hot junction, is used for the heat exchange of hot junction sheet and outside air; Interior circulating fan, it is installed on the semiconductor refrigerating heat-producing machine cold junction sheet, is used for the interior air of interior air circulation of power brick and cold junction sheet and power brick and carries out heat exchange; Controller is used to control this heat management device.
This thermal management algorithm comprises: controller is through collecting the data of temperature collecting cell; The switching of circulating fan, the opening and closing of outer circulation fan and opening and closing of semiconductor refrigerating heat-producing machine and refrigerating/heating dististyle in the control is to reach the automatic control of Unsteady Temperature Field in the power brick.
Heat management device of the present invention, preferably this semiconductor refrigerating heat-producing machine also comprises the semi-conducting material of N type and P type, they are used for the directed heat that transmits under "on" position between cold junction sheet and hot junction sheet.
Heat management device of the present invention, when preferably this this semiconductor refrigerating heat-producing machine forward was connected direct current, heat was delivered to the hot junction sheet from the cold junction sheet, and promptly the cold junction sheet is the cold junction sheet, and the hot junction sheet is the hot junction sheet; And if when oppositely connecting direct current, then heat will be delivered to the cold junction sheet from the hot junction sheet, and the cold junction sheet is the hot junction sheet, and the hot junction sheet is the cold junction sheet.
Thermal management algorithm of the present invention, preferably this controller controls automatically temperature range and the temperature range in the power brick according to predetermined temperature range and temperature range.
Thermal management algorithm of the present invention, preferably this controller adopts PWM modulation control, can realize ± the automatic temperature-adjusting control of 1 ℃ of precision.
The present invention can reach following outstanding technique effect and advantage:
1. can realize inside and outside sealing fully of battery pack, degree of protection reaches more than the IP56.
2. do not need cold-producing medium, ability continuous operation, do not have vibrations, life-span length can not reach 15 years, be prone in the electrokinetic cell bag, install.
3. freezing unites two into one with heating, through automatically switch refrigeration and heating of the polarity that changes electric current.Through PWM modulation control, can realize ± 1 ℃ of high-precision temperature control, be convenient to form automatic control system.
4. the thermal inertia of semiconductor refrigerating (heating) device is very little, and the cooling and warming time is short, and energising just can reach maximum temperature difference less than one minute.The control of ability Rapid Realization electrokinetic cell internal temperature field.
5. under severe environmental conditions, ℃ can realize being adapted to refrigeration, heat, can make that electrokinetic cell is round-the-clock to be in the efficient context temperature range from+90 ℃ to negative temperature-50.
Description of drawings
Fig. 1 is the sketch map with power battery pack heat management device of the automatic controlled function of Unsteady Temperature Field.
Fig. 2 is the control flow chart with power battery pack thermal management algorithm of the automatic controlled function of Unsteady Temperature Field.
Fig. 3 is the semiconductor refrigerating principle schematic.
Wherein, 101 is the electrokinetic cell monomer, and 102 is temperature collecting cell; 103 is power brick, and 104 is the hot junction sheet of semiconductor refrigerating heat-producing machine, and 105 are the outer circulation fan; 106 is the cold junction sheet of the hot gas of semiconductor refrigerating, and 107 is interior circulating fan, and 108 are placed on the semiconductor cooler cold junction sheet 106 integrated for controller; Arrow 201 expression outside air air flow directions, air draught flows in arrow 202 expressions.
Embodiment
For making objects and advantages of the present invention clearer, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Battery thermal management system of the present invention is integrated in the electrokinetic cell bag; According to the charge-discharge characteristic of electrokinetic cell and the distribution of the Unsteady Temperature Field in the power brick; The power and the position of appropriate design semiconductor refrigerating (heating) device; According to the position of the reasonable districution temperature pick-up transducers of the placement of battery, so just can realize temperature controlling in the electrokinetic cell bag, make it to maintain in the design temperature scope and balanced internal temperature field.
A kind of power battery pack heat management device of the present invention with the automatic controlled function of Unsteady Temperature Field, comprising: power brick is provided with the electrokinetic cell monomer in it; Temperature collecting cell is arranged on the pole of electrokinetic cell monomer; The outer circulation fan is used for the heat exchange of power brick and outside air; Interior circulating fan, the air circulation that is used in the power brick is transmitted with heat; Controller is used to control this heat management device; Also comprise: the semiconductor refrigerating heat-producing machine, it comprises cold junction sheet and hot junction sheet; Wherein, this outer circulation fan is arranged on this heat management device outermost, and the hot junction sheet of this semiconductor refrigerating heat-producing machine is close to this outer circulation fan, and both are arranged on the power brick outside simultaneously, carry out the heat exchange with outside air; Should in circulating fan and this cold junction sheet all be arranged on the power brick inboard, carry out air circulation and heat exchange in the power brick, this cold junction sheet with this in circulating fan closely link to each other and than it more near this hot junction sheet; Controller is integrated to be arranged on the cold junction sheet, and controller is through collecting the data of temperature collecting cell, the switching of circulating fan, the opening and closing of outer circulation fan and opening and closing of semiconductor refrigerating heat-producing machine and refrigerating/heating in the control.
Heat management device of the present invention, preferably this semiconductor refrigerating heat-producing machine also comprises the semi-conducting material of N type and P type, they are used for the directed heat that transmits under "on" position between cold junction sheet and hot junction sheet.
Heat management device of the present invention, preferably when this semiconductor refrigerating heat-producing machine was connected direct current, heat was delivered to the hot junction sheet from the cold junction sheet; And if insert the opposite direct current of electrode, then heat will be delivered to the cold junction sheet from the hot junction sheet.
Heat management device of the present invention, preferably this controller controls automatically temperature range and the temperature range in the power brick according to predetermined temperature range and temperature range.
Heat management device of the present invention, preferably this controller adopts PWM modulation control, can realize ± the automatic temperature-adjusting control of 1 ℃ of precision.
A kind of power battery pack thermal management algorithm of the present invention with the automatic controlled function of Unsteady Temperature Field, this method comprises: adopt the power battery pack heat management device, this heat management device comprises: power brick is provided with the electrokinetic cell monomer in it; Temperature collecting cell is arranged on the pole of electrokinetic cell monomer; The outer circulation fan is used for the heat exchange of power brick and outside air; Interior circulating fan, the air circulation that is used in the power brick is transmitted with heat; Controller is used to control this heat management device; Also comprise: the semiconductor refrigerating heat-producing machine, it comprises cold junction sheet and hot junction sheet; Wherein, this outer circulation fan is arranged on this heat management device outermost, and the hot junction sheet of this semiconductor refrigerating heat-producing machine is close to this outer circulation fan, and both are arranged on the power brick outside simultaneously, carry out the heat exchange with outside air; Should in circulating fan and this cold junction sheet all be arranged on the power brick inboard, carry out air circulation and heat exchange in the power brick, this cold junction sheet with this in circulating fan closely link to each other and than it more near this hot junction sheet; Controller is integrated to be arranged on the cold junction sheet, and controller is through collecting the data of temperature collecting cell, the switching of circulating fan, the opening and closing of outer circulation fan and opening and closing of semiconductor refrigerating heat-producing machine and refrigerating/heating in the control.
Thermal management algorithm of the present invention, preferably this semiconductor refrigerating heat-producing machine also comprises the semi-conducting material of N type and P type, they are used for the directed heat that transmits under "on" position between cold junction sheet and hot junction sheet.
Thermal management algorithm of the present invention, preferably when this semiconductor refrigerating heat-producing machine was connected direct current, heat was delivered to the hot junction sheet from the cold junction sheet; And if insert the opposite direct current of electrode, then heat will be delivered to the cold junction sheet from the hot junction sheet.
Thermal management algorithm of the present invention, preferably this controller controls automatically temperature range and the temperature range in the power brick according to predetermined temperature range and temperature range.
Thermal management algorithm of the present invention, preferably this controller adopts PWM modulation control, can realize ± the automatic temperature-adjusting control of 1 ℃ of precision.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Those skilled in the art can make replacement or modification to structures more of the present invention according to content disclosed by the invention and the art technology of being grasped; But these replacements or modification should not be regarded as breaking away from the present invention's design, and these replacements or modification are all in the interest field that the present invention requires to protect.
Claims (10)
1. power battery pack thermal management algorithm with the automatic controlled function of Unsteady Temperature Field, this method comprises:
Adopt the power battery pack heat management device, this heat management device comprises:
Power brick is provided with the electrokinetic cell monomer in it;
Temperature collecting cell is arranged on the pole of electrokinetic cell monomer;
The semiconductor refrigerating heat-producing machine, it comprises cold junction sheet and two dististyles of hot junction sheet, can automatically switch; It is installed on the power brick housing, in the cold junction sheet is put, outside the hot junction sheet is put; When its forward energising, the cold junction sheet is a cooling piece, and the hot junction sheet is a fin; During reverse the energising, the cold junction sheet is for heating sheet, and the hot junction sheet is a heat absorbing sheet;
The outer circulation fan, it is installed on the sheet of semiconductor refrigerating heat-producing machine hot junction, is used for the heat exchange of hot junction sheet and outside air;
Interior circulating fan, it is installed on the semiconductor refrigerating heat-producing machine cold junction sheet, is used for the interior air of interior air circulation of power brick and cold junction sheet and power brick and carries out heat exchange;
Controller is used to control this heat management device.
2. according to the described thermal management algorithm of claim 1, wherein this semiconductor refrigerating heat-producing machine also comprises the semi-conducting material of N type and P type, and they are used for the directed heat that transmits under "on" position between cold junction sheet and hot junction sheet.
3. according to claim 1 or 2 described thermal management algorithms, wherein when this semiconductor refrigerating heat-producing machine forward was connected direct current, heat was delivered to the hot junction sheet from the cold junction sheet, and promptly the cold junction sheet is the cold junction sheet, and the hot junction sheet is the hot junction sheet; And if when oppositely connecting direct current, then heat will be delivered to the cold junction sheet from the hot junction sheet, and the cold junction sheet is the hot junction sheet, and the hot junction sheet is the cold junction sheet.
4. any described thermal management algorithm in requiring according to aforesaid right, wherein this controller comes temperature range and temperature range in the automatic control power brick according to predetermined temperature range and temperature range.
5. any described thermal management algorithm in requiring according to aforesaid right, wherein this controller adopts PWM modulation control, can realize ± the automatic temperature-adjusting control of 1 ℃ of precision.
6. power battery pack heat management device with the automatic controlled function of Unsteady Temperature Field, this heat management device comprises:
Power brick is provided with the electrokinetic cell monomer in it;
Temperature collecting cell is arranged on the pole of electrokinetic cell monomer;
The semiconductor refrigerating heat-producing machine, it comprises cold junction sheet and two dististyles of hot junction sheet, can automatically switch; It is installed on the power brick housing, in the cold junction sheet is put, outside the hot junction sheet is put; When its forward energising, the cold junction sheet is a cooling piece, and the hot junction sheet is a fin; During reverse the energising, the cold junction sheet is for heating sheet, and the hot junction sheet is a heat absorbing sheet;
The outer circulation fan, it is installed on the sheet of semiconductor refrigerating heat-producing machine hot junction, is used for the heat exchange of hot junction sheet and outside air;
Interior circulating fan, it is installed on the semiconductor refrigerating heat-producing machine cold junction sheet, is used for the interior air of interior air circulation of power brick and cold junction sheet and power brick and carries out heat exchange;
Controller is used to control this heat management device.
7. according to the described heat management device of claim 6, wherein this semiconductor refrigerating heat-producing machine also comprises the semi-conducting material of N type and P type, and they are used for the directed heat that transmits under "on" position between cold junction sheet and hot junction sheet.
8. according to claim 6 or 7 described heat management devices, wherein when this semiconductor refrigerating heat-producing machine forward was connected direct current, heat was delivered to the hot junction sheet from the cold junction sheet, and promptly the cold junction sheet is the cold junction sheet, and the hot junction sheet is the hot junction sheet; And if when oppositely connecting direct current, then heat will be delivered to the cold junction sheet from the hot junction sheet, and the cold junction sheet is the hot junction sheet, and the hot junction sheet is the cold junction sheet.
9. any described heat management device in requiring according to aforesaid right, wherein this controller comes temperature range and temperature range in the automatic control power brick according to predetermined temperature range and temperature range.
10. any described heat management device in requiring according to aforesaid right, wherein this controller adopts PWM modulation control, can realize ± the automatic temperature-adjusting control of 1 ℃ of precision.
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| CN2010102835426A CN102403543A (en) | 2010-09-16 | 2010-09-16 | Thermal management method and device for power battery pack with function of automatically controlling non-steady-state temperature field |
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| CN2010102835426A CN102403543A (en) | 2010-09-16 | 2010-09-16 | Thermal management method and device for power battery pack with function of automatically controlling non-steady-state temperature field |
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Cited By (19)
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| CN103078373A (en) * | 2012-12-31 | 2013-05-01 | 青岛大学 | Lithium battery pack temperature uniforming system |
| CN103579543A (en) * | 2012-08-06 | 2014-02-12 | 深圳市沃特玛电池有限公司 | Electronic intelligent battery box |
| CN103972606A (en) * | 2013-02-04 | 2014-08-06 | 北京中瑞蓝科电动汽车技术有限公司 | Electric vehicle battery box refrigeration device and temperature control method using it |
| CN105470589A (en) * | 2014-08-29 | 2016-04-06 | 比亚迪股份有限公司 | Battery system, battery thermal management method and apparatus, and battery management unit |
| CN105514523A (en) * | 2015-12-31 | 2016-04-20 | 普天新能源车辆技术有限公司 | Heat dissipation battery pack and battery heat dissipation method |
| CN105826619A (en) * | 2015-01-05 | 2016-08-03 | 北京长城华冠汽车科技有限公司 | Constant-temperature thermal management system for lithium-ion power battery pack |
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| CN104733801B (en) * | 2013-12-20 | 2017-08-04 | 北汽福田汽车股份有限公司 | Heat management device of power battery and method |
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| CN107221729A (en) * | 2017-07-10 | 2017-09-29 | 江苏英耐杰新能源有限公司 | The heat management system and method for a kind of electrokinetic cell bag |
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| CN109037545A (en) * | 2018-10-29 | 2018-12-18 | 广东工业大学 | A kind of power battery and its thermal management module |
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| CN103579543A (en) * | 2012-08-06 | 2014-02-12 | 深圳市沃特玛电池有限公司 | Electronic intelligent battery box |
| CN103078373B (en) * | 2012-12-31 | 2016-02-24 | 青岛大学 | A kind of lithium battery group temperature equalization system |
| CN103078373A (en) * | 2012-12-31 | 2013-05-01 | 青岛大学 | Lithium battery pack temperature uniforming system |
| CN103972606A (en) * | 2013-02-04 | 2014-08-06 | 北京中瑞蓝科电动汽车技术有限公司 | Electric vehicle battery box refrigeration device and temperature control method using it |
| CN104733801B (en) * | 2013-12-20 | 2017-08-04 | 北汽福田汽车股份有限公司 | Heat management device of power battery and method |
| CN105470589A (en) * | 2014-08-29 | 2016-04-06 | 比亚迪股份有限公司 | Battery system, battery thermal management method and apparatus, and battery management unit |
| CN105826619A (en) * | 2015-01-05 | 2016-08-03 | 北京长城华冠汽车科技有限公司 | Constant-temperature thermal management system for lithium-ion power battery pack |
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| CN106410315A (en) * | 2016-06-23 | 2017-02-15 | 广东工业大学 | Two-way flow battery heat management system and battery heat adjustment method |
| CN107845842A (en) * | 2016-09-19 | 2018-03-27 | 刘万辉 | A kind of batteries of electric automobile group Two-way Cycle ambient temperature control device |
| CN108574128A (en) * | 2017-03-08 | 2018-09-25 | 北京小米移动软件有限公司 | battery temperature adjusting method, device and battery |
| CN107069121A (en) * | 2017-03-31 | 2017-08-18 | 比赫电气（太仓）有限公司 | A kind of TEC cooling test methods radiated for battery modules |
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Application publication date: 20120404 |