CN102569934B - Method and system for cooling power battery - Google Patents
Method and system for cooling power battery Download PDFInfo
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- CN102569934B CN102569934B CN201210014062.9A CN201210014062A CN102569934B CN 102569934 B CN102569934 B CN 102569934B CN 201210014062 A CN201210014062 A CN 201210014062A CN 102569934 B CN102569934 B CN 102569934B
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- electrokinetic cell
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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
Abstract
The invention discloses a method and a system for cooling a power battery. The method comprises the steps of: acquiring the current temperature of the power battery, comparing the current temperature with a first temperature threshold and a second temperature threshold, and when the current temperature is more than the first temperature threshold and smaller than the second temperature threshold, controlling a cooling device to carry out cooling treatment on the power battery according to the magnitude of at least one of the input power and the output power of the power battery. According to the invention, the cooling intensity of the cooling device can be regulated according to the current temperature of the power battery and the power of the power battery at the same time, so that the cooling effect of the power battery is made batter.
Description
Technical field
The present invention relates to battery cooling technology field, particularly relate to a kind of cooling means and system of electrokinetic cell.
Background technology
Being on the rise of day by day exhausted and global environmental pollution of Global Oil resource is the key factor of restriction society, economic development, and Pressure on Energy and the effective measures that reduce environmental pollution are alleviated in the rise of various new-energy automobiles beyond doubt.
In various new-energy automobiles, electric automobile has huge development prospect.Electric automobile is to provide car load energy by electrokinetic cell, and the actuating force of vehicle is provided by drive motors.Because electrokinetic cell need to provide a large amount of energy, therefore in the course of the work, electrokinetic cell inevitably can produce a large amount of heats.When electrokinetic cell is charged, electrokinetic cell can produce amount of heat too.The excessive buildup of these heats can have a negative impact to the operating efficiency of electrokinetic cell, and then affects the normal operation of electric automobile.Certainly, except electric automobile, other vehicles that use electrokinetic cell to carry out energy raising also have identical problem.
Therefore, how efficiently for electrokinetic cell carries out cooling processing, be, still the difficult problem of pendulum in face of the research staff of this area.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present invention provides a kind of cooling means and system of electrokinetic cell, and to realize the high efficiency cooling to electrokinetic cell, technical scheme is as follows:
A cooling means for electrokinetic cell, comprising:
Obtain the Current Temperatures of electrokinetic cell and compare with the first temperature threshold and the second temperature threshold, when described Current Temperatures is greater than described the first temperature threshold and is less than the second temperature threshold, according to the size adjustment cooling device of at least one power in the input power of electrokinetic cell and power output, described electrokinetic cell is carried out the intensity of cooling processing.
Preferably, when the Current Temperatures of electrokinetic cell is not more than the first temperature threshold, controls cooling device and described electrokinetic cell is not carried out to cooling processing.
Preferably, when the Current Temperatures of electrokinetic cell is not less than the second temperature threshold, according to the size adjustment cooling device of described Current Temperatures, carry out the intensity of cooling processing.
Preferably, the input power of described electrokinetic cell and the preparation method of power output are: the current electric current of the current voltage of described electrokinetic cell and electrokinetic cell is multiplied each other.
The present invention also provides a kind of cooling system of electrokinetic cell, comprising:
Temperature acquisition module, for obtaining the Current Temperatures of electrokinetic cell;
Temperature comparison module, for comparing the Current Temperatures of described electrokinetic cell and the first temperature threshold and the second temperature threshold;
Cooling control module, said cooling control module comprises power acquisition module and cooling adjusting module, described power obtains submodule for obtaining at least one power of input power and power output of electrokinetic cell, and described cooling adjustment submodule carries out the intensity of cooling processing to described electrokinetic cell for adjusting cooling device according to the size of obtained power.
Preferably, described cooling control module is specifically set to: when the Current Temperatures of electrokinetic cell is not more than the first temperature threshold, controls cooling device and electrokinetic cell is not carried out to cooling processing.
Preferably, described cooling control module is specifically set to: when the Current Temperatures of electrokinetic cell is not less than the second temperature threshold, carry out the intensity of cooling processing according to the size adjustment cooling device of described Current Temperatures.
Preferably, the input power of described electrokinetic cell and the preparation method of power output are: the current electric current of the current voltage of described electrokinetic cell and electrokinetic cell is multiplied each other.
By applying above technical scheme, the cooling means of a kind of electrokinetic cell that the embodiment of the present invention provides and system, can according to the power of the Current Temperatures of electrokinetic cell and electrokinetic cell, to the intensity of cooling of cooling device, regulate, thereby make the cooling effect of electrokinetic cell better simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic flow sheet of the cooling means of a kind of electrokinetic cell that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the cooling system of a kind of electrokinetic cell that Fig. 2 provides for the embodiment of the present invention;
The structural representation of cooling control module in the cooling system of the another kind of electrokinetic cell that Fig. 3 provides for the embodiment of the present invention.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, should belong to the scope of protection of the invention.
As shown in Figure 1, the cooling means of a kind of electrokinetic cell that the embodiment of the present invention provides, comprising:
The Current Temperatures of S101, acquisition electrokinetic cell;
Hold intelligiblely, the method for obtaining electrokinetic cell Current Temperatures has multiple, as adopted temperature sensor etc.
S102, the Current Temperatures of described electrokinetic cell and the first temperature threshold are compared, when being greater than described the first temperature threshold, execution step S103, otherwise execution step S107;
Wherein, the first temperature threshold can be set and revise according to real work situation, as according to coefficient of heat transfer of the significance level of ambient temperature, equipment, battery etc.Concrete, the first temperature threshold can be made as the safe working temperature of electrokinetic cell, when the Current Temperatures of electrokinetic cell is less than this safe working temperature, thinks that electrokinetic cell can trouble free service that is:, need not carry out cooling processing; When being greater than this safe working temperature, need to carry out cooling processing.
S103, the Current Temperatures of described electrokinetic cell and the second temperature threshold are compared, the second temperature threshold is greater than the first temperature threshold, when described Current Temperatures is less than the second temperature threshold, and execution step S104, otherwise execution step S106;
In like manner, the second temperature threshold also can be set and revise according to actual conditions.
Wherein, the second temperature threshold can be made as the harm working temperature of an electrokinetic cell, and when the Current Temperatures of electrokinetic cell is greater than this harm working temperature, electrokinetic cell, in a more dangerous temperature environment, need to carry out high-intensity cooling processing.
At least one power in input power and the power output of S104, acquisition electrokinetic cell;
When electrokinetic cell is powered, it has power output, when power battery charging, has input power, and when charging simultaneously and powering, it has this two power simultaneously.
Wherein, the input power of described electrokinetic cell and the preparation method of power output can be all: the current electric current of the current voltage of described electrokinetic cell and electrokinetic cell is multiplied each other.
Preferably, when electrokinetic cell has input power and power output, these two power can be superposeed simultaneously, obtain a gross power.
S105, according to the size control cooling device of obtained power, described electrokinetic cell is carried out to cooling processing;
Concrete, step S105 can specifically be set to: when obtained power is greater than the first power threshold, carry out the intensity of cooling processing according to the size adjustment cooling device of obtained power.
It should be noted that, iff the Current Temperatures that relies on electrokinetic cell, cooling device is regulated, possibly cannot guarantee that electrokinetic cell obtains cooling timely.Because become greater to suddenly the Current Temperatures generation significant change of electrokinetic cell from the power output of electrokinetic cell or input power, need to pass through long period of time, and internally-powered battery also needs to carry out cooling during this period of time.Therefore, according to power, cooling device is regulated simultaneously, can to electrokinetic cell, carry out timely coolingly, improved cooling effect.
Wherein, cooling device can comprise: air cooler, water cooling equipment etc.Hold intelligiblely, these cooling devices are the in harness intensity attribute of tool all, and these attributes are controllable.In actual applications, those skilled in the art are easy to be tested or learned according to previous experiences by limited number of time the working strength of the cooling device matching with electrokinetic cell Current Temperatures and electrokinetic cell power.Another method is that in different temperatures, the caloric value under different capacity obtains the intensity of the cooling device work of mating with electrokinetic cell by electrokinetic cell.Hold intelligible, regulate the intensity of cooling device work and with the Current Temperatures and power match of electrokinetic cell after, just can well carry out cooling for electrokinetic cell.
S106, according to the size of described Current Temperatures, adjust cooling device and carry out the intensity of cooling processing;
When the Current Temperatures of electrokinetic cell is excessive, can consider the power of electrokinetic cell, directly according to the size of Current Temperatures, to electrokinetic cell, carry out cooling.Hold intelligiblely, when the Current Temperatures of electrokinetic cell is higher, the working strength of cooling device should be larger.
S107, control cooling device do not carry out cooling processing to electrokinetic cell.
When temperature of powered cell is very little, in the time of below safe working temperature, can to electrokinetic cell, not carry out cooling processing.
The cooling means of a kind of electrokinetic cell that the embodiment of the present invention provides, can regulate the intensity of cooling of cooling device according to the power of the Current Temperatures of electrokinetic cell and electrokinetic cell, thereby make the cooling effect of electrokinetic cell better simultaneously.
Corresponding with embodiment of the method above, the present invention also provides a kind of cooling system of electrokinetic cell.
As shown in Figure 2, the cooling system of a kind of electrokinetic cell that the embodiment of the present invention provides, comprising:
Wherein, temperature acquisition module can or be connected with temperature sensor for temperature sensor.
Wherein, the first temperature threshold and the second temperature threshold can be set and revise according to real work situation, as according to ambient temperature, and the significance level of equipment, the coefficient of heat transfer of battery etc.Concrete, the first temperature threshold can be made as the safe working temperature of electrokinetic cell, when the Current Temperatures of electrokinetic cell is less than this safe working temperature, thinks that electrokinetic cell can trouble free service that is:, need not carry out cooling processing; When being greater than this safe working temperature, need to carry out cooling processing.Wherein, the second temperature threshold can be made as the harm working temperature of an electrokinetic cell, and when the Current Temperatures of electrokinetic cell is greater than this harm working temperature, electrokinetic cell, in a more dangerous temperature environment, need to carry out high-intensity cooling processing.
Wherein, as shown in Figure 3, cooling control module 300, can comprise: power obtains submodule 310 and cooling adjustment submodule 320,
Power obtains submodule 310, for obtaining at least one power of input power and power output of electrokinetic cell;
When electrokinetic cell is powered, it has power output, when power battery charging, has input power, and when charging simultaneously and powering, it has this two power simultaneously.
The input power of electrokinetic cell and the preparation method of power output are: the current electric current of the current voltage of described electrokinetic cell and electrokinetic cell is multiplied each other.
Wherein, cooling control module can specifically be set to: when the Current Temperatures of electrokinetic cell is less than the first temperature threshold, controls cooling device and electrokinetic cell is not carried out to cooling processing.
When temperature of powered cell is very little, in the time of below safe working temperature, can to electrokinetic cell, not carry out cooling processing.
Cooling control module can also specifically be set to: when the Current Temperatures of electrokinetic cell is greater than the second temperature threshold, carry out the intensity of cooling processing according to the size adjustment cooling device of described Current Temperatures.
When the Current Temperatures of electrokinetic cell is excessive, can consider the power of electrokinetic cell, directly according to the size of Current Temperatures, to electrokinetic cell, carry out cooling.Hold intelligiblely, when the Current Temperatures of electrokinetic cell is higher, the working strength of cooling device should be larger.
It should be noted that, iff the Current Temperatures that relies on electrokinetic cell, cooling device is regulated, possibly cannot guarantee that electrokinetic cell obtains cooling timely.Because become greater to suddenly the Current Temperatures generation significant change of electrokinetic cell from the power output of electrokinetic cell or input power, need to pass through long period of time, and internally-powered battery also needs to carry out cooling during this period of time.Therefore, according to power, cooling device is regulated simultaneously, can to electrokinetic cell, carry out timely coolingly, improved cooling effect.
Wherein, cooling device can comprise: air cooler, water cooling equipment etc.Hold intelligiblely, these cooling devices are the in harness intensity attribute of tool all, and these attributes are adjustable.In actual applications, those skilled in the art are easy to be tested or learned according to previous experiences by limited number of time the working strength of the cooling device matching with electrokinetic cell Current Temperatures and electrokinetic cell power.Another method is that in different temperatures, the caloric value under different capacity obtains the intensity of the cooling device work of mating with electrokinetic cell by electrokinetic cell.Hold intelligible, regulate the intensity of cooling device work and with the Current Temperatures and power match of electrokinetic cell after, just can well carry out cooling for electrokinetic cell.
The cooling system of a kind of electrokinetic cell that the embodiment of the present invention provides, can regulate the intensity of cooling of cooling device according to the power of the Current Temperatures of electrokinetic cell and electrokinetic cell, thereby make the cooling effect of electrokinetic cell better simultaneously.
While for convenience of description, describing above device, with function, being divided into various unit describes respectively.Certainly, when enforcement is of the present invention, the function of each unit can be realized in same or multiple software and/or hardware.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realizes.Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually referring to, each embodiment stresses is and the difference of other embodiment.Especially, for system embodiment, because it is substantially similar in appearance to embodiment of the method, so describe fairly simplely, relevant part is referring to the part explanation of embodiment of the method.System embodiment described above is only schematic, the wherein said unit as separating component explanation can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.
The above is only the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a cooling means for electrokinetic cell, is characterized in that, comprising:
Obtain the Current Temperatures of electrokinetic cell and compare with the first temperature threshold and the second temperature threshold, when described Current Temperatures is greater than described the first temperature threshold and is less than the second temperature threshold, according to the size adjustment cooling device of at least one power in the input power of electrokinetic cell and power output, described electrokinetic cell is carried out the intensity of cooling processing.
2. method according to claim 1, is characterized in that, when the Current Temperatures of electrokinetic cell is not more than the first temperature threshold, controls cooling device and described electrokinetic cell is not carried out to cooling processing.
3. method according to claim 1, is characterized in that, when the Current Temperatures of electrokinetic cell is not less than the second temperature threshold, carries out the intensity of cooling processing according to the size adjustment cooling device of described Current Temperatures.
4. method according to claim 1, is characterized in that, the input power of described electrokinetic cell and the preparation method of power output are: the current electric current of the current voltage of described electrokinetic cell and electrokinetic cell is multiplied each other.
5. a cooling system for electrokinetic cell, is characterized in that, comprising:
Temperature acquisition module, for obtaining the Current Temperatures of electrokinetic cell;
Temperature comparison module, for comparing the Current Temperatures of described electrokinetic cell and the first temperature threshold and the second temperature threshold;
Cooling control module, said cooling control module comprises power acquisition module and cooling adjusting module, described power obtains submodule for obtaining at least one power of input power and power output of electrokinetic cell, and described cooling adjustment submodule carries out the intensity of cooling processing to described electrokinetic cell for adjusting cooling device according to the size of obtained power.
6. system according to claim 5, is characterized in that, described cooling control module is specifically set to: when the Current Temperatures of electrokinetic cell is not more than the first temperature threshold, controls cooling device and electrokinetic cell is not carried out to cooling processing.
7. system according to claim 5, it is characterized in that, described cooling control module is specifically set to: when the Current Temperatures of electrokinetic cell is not less than the second temperature threshold, carry out the intensity of cooling processing according to the size adjustment cooling device of described Current Temperatures.
8. system according to claim 5, is characterized in that, the input power of described electrokinetic cell and the preparation method of power output are: the current electric current of the current voltage of described electrokinetic cell and electrokinetic cell is multiplied each other.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105514525B (en) * | 2016-03-02 | 2017-11-03 | 安徽江淮汽车集团股份有限公司 | A kind of hybrid power automobile battery temperature control equipment and control method |
| CN106229574B (en) * | 2016-08-18 | 2019-12-06 | 宁德时代新能源科技股份有限公司 | cooling method and system for battery pack |
| CN109599624B (en) * | 2017-09-30 | 2021-01-19 | 比亚迪股份有限公司 | Temperature adjusting method and temperature adjusting system for vehicle-mounted battery |
| CN109599605B (en) * | 2017-09-30 | 2021-01-19 | 比亚迪股份有限公司 | Temperature adjusting method and temperature adjusting system for vehicle-mounted battery |
| CN109599637B (en) * | 2017-09-30 | 2021-05-14 | 比亚迪股份有限公司 | Temperature adjusting method and temperature adjusting system for vehicle-mounted battery |
| CN109599617B (en) * | 2017-09-30 | 2021-01-19 | 比亚迪股份有限公司 | Temperature adjusting method and temperature adjusting system for vehicle-mounted battery |
| CN109599636B (en) * | 2017-09-30 | 2021-06-18 | 比亚迪股份有限公司 | Temperature adjusting method and temperature adjusting system for vehicle-mounted battery |
| CN107799848B (en) * | 2017-11-13 | 2023-11-21 | 河南森源电气股份有限公司 | Battery energy storage equipment and thermal management system thereof |
| CN108400404A (en) * | 2018-02-11 | 2018-08-14 | 乐视汽车（北京）有限公司 | battery cooling control method, battery thermal management system and electric vehicle |
| CN110176656A (en) * | 2018-04-11 | 2019-08-27 | 山东交通学院 | A kind of electric automobile power battery temprature control method |
| CN109278588B (en) * | 2018-10-24 | 2020-06-12 | 重庆长安汽车股份有限公司 | Method for controlling temperature of lithium battery |
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| CN201975487U (en) * | 2010-12-17 | 2011-09-14 | 上海汽车集团股份有限公司 | Automotive battery heat management system |
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| JP4768277B2 (en) * | 2005-01-28 | 2011-09-07 | プライムアースＥｖエナジー株式会社 | Cooling device and power supply device |
| JP4932340B2 (en) * | 2006-06-22 | 2012-05-16 | プライムアースＥｖエナジー株式会社 | Battery cooling device and cooling air volume control device |
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| CN201975487U (en) * | 2010-12-17 | 2011-09-14 | 上海汽车集团股份有限公司 | Automotive battery heat management system |
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Application publication date: 20120711 Assignee: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. Assignor: Chongqing Changan Automobile Co.,Ltd.|CHONGQING CHANG'AN NEW ENERGY AUTOMOBILE Co.,Ltd. Contract record no.: 2018500000022 Denomination of invention: Method and system for cooling power battery Granted publication date: 20140423 License type: Exclusive License Record date: 20181130 |
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Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |