CN102569934A - Method and system for cooling power battery - Google Patents
Method and system for cooling power battery Download PDFInfo
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- CN102569934A CN102569934A CN2012100140629A CN201210014062A CN102569934A CN 102569934 A CN102569934 A CN 102569934A CN 2012100140629 A CN2012100140629 A CN 2012100140629A CN 201210014062 A CN201210014062 A CN 201210014062A CN 102569934 A CN102569934 A CN 102569934A
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- 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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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 exhausted day by day and global environmental pollution of whole world petroleum resources is key factors of restriction society, economic development, and energy pressure 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 by electrokinetic cell the car load energy to be provided, and by drive motors the actuating force of vehicle is provided.Because electrokinetic cell need provide lot of energy, therefore in the course of the work, electrokinetic cell inevitably can produce great amount of heat.When electrokinetic cell was charged, electrokinetic cell can produce a large amount of heats too.The excessive buildup of these heats can have a negative impact to the operating efficiency of electrokinetic cell, and then influences the normal operation of electric automobile.Certainly, except that electric automobile, the vehicle that other working power batteries carry out the energy raising also has identical problem.
Therefore, how efficiently for electrokinetic cell carries out cooling processing, still be to put a difficult problem in face of the research staff in this area.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of cooling means and system of electrokinetic cell, and to realize the efficient cooling to electrokinetic cell, technical scheme is following:
A kind of cooling means of electrokinetic cell comprises:
The Current Temperatures of battery and compare with first temperature threshold and second temperature threshold gains impetus; When said Current Temperatures during, said electrokinetic cell is carried out cooling processing according to the input power of electrokinetic cell and the size control cooling device of at least one power in the power output greater than said first temperature threshold and less than second temperature threshold.
Preferably, said electrokinetic cell is carried out cooling processing, specifically comprises according to the input power of electrokinetic cell and the size control cooling device of at least one power in the power output:
The input power of battery that gains impetus and at least one power in the power output;
Carry out the intensity of cooling processing according to the size adjustment cooling device of the power that is obtained.
Preferably, when the Current Temperatures of electrokinetic cell was not more than first temperature threshold, the control cooling device did not carry out cooling processing to said electrokinetic cell.
Preferably, when the Current Temperatures of electrokinetic cell is not less than second temperature threshold, carry out the intensity of cooling processing according to the size adjustment cooling device of said Current Temperatures.
Preferably, the preparation method of the input power of said electrokinetic cell and power output is: the current voltage of said electrokinetic cell and the current electric current of electrokinetic cell are multiplied each other.
The present invention also provides a kind of cooling system of electrokinetic cell, comprising:
The temperature acquisition module, the Current Temperatures of the battery that is used to gain impetus;
Temperature comparison module is used for the Current Temperatures of said electrokinetic cell and first temperature threshold and second temperature threshold are compared;
The cooling control module; Be used for according to the input power of electrokinetic cell and the size control cooling device of at least one power in the power output said electrokinetic cell being carried out cooling processing when said Current Temperatures during greater than said first temperature threshold and less than second temperature threshold.
Preferably, said cooling control module comprises: power obtains submodule and cooling adjustment submodule,
Said power obtains submodule, is used for obtaining at least one power of the input power and the power output of electrokinetic cell;
Said cooling adjustment submodule is used for adjusting the intensity that cooling device carries out cooling processing according to the size of the power that is obtained.
Preferably, said cooling control module specifically is set to: when the Current Temperatures of electrokinetic cell was not more than first temperature threshold, the control cooling device did not carry out cooling processing to electrokinetic cell.
Preferably, said cooling control module specifically is set to: when the Current Temperatures of electrokinetic cell is not less than second temperature threshold, carry out the intensity of cooling processing according to the size adjustment cooling device of said Current Temperatures.
Preferably, the preparation method of the input power of said electrokinetic cell and power output is: the current voltage of said electrokinetic cell and the current electric current of electrokinetic cell are multiplied each other.
Through using above technical scheme; The cooling means of a kind of electrokinetic cell that the embodiment of the invention provides and system; Can regulate the intensity of cooling of cooling device according to the Current Temperatures of electrokinetic cell and the power of electrokinetic cell simultaneously, thereby make that the cooling effect of electrokinetic cell is better.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment that put down in writing among the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The schematic flow sheet of the cooling means of a kind of electrokinetic cell that Fig. 1 provides for the embodiment of the invention;
The structural representation of the cooling system of a kind of electrokinetic cell that Fig. 2 provides for the embodiment of the 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 invention.
Embodiment
In order to make those skilled in the art person understand the technical scheme among the present invention better; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the present invention's protection.
As shown in Figure 1, the cooling means of a kind of electrokinetic cell that the embodiment of the invention provides comprises:
The Current Temperatures of S101, the battery that gains impetus;
Be understood that easily the method for obtaining the electrokinetic cell Current Temperatures has multiple, as adopting temperature sensor etc.
S102, the Current Temperatures and first temperature threshold of said electrokinetic cell compared, when greater than said first temperature threshold, execution in step S103, otherwise execution in step S107;
Wherein, first temperature threshold can be set and revise according to the real work situation, as according to the significance level of ambient temperature, equipment, the coefficient of heat transfer of battery etc.Concrete, first temperature threshold can be made as the safe working temperature of electrokinetic cell, when the Current Temperatures of electrokinetic cell during less than this safe working temperature, thinks that electrokinetic cell can trouble free service that is:, need not carry out cooling processing; When greater than this safe working temperature, need carry out cooling processing.
S103, the Current Temperatures and second temperature threshold of said electrokinetic cell compared, second temperature threshold is greater than first temperature threshold, when said Current Temperatures during less than second temperature threshold, and execution in step S104, otherwise execution in step S106;
In like manner, second temperature threshold also can be set and revise according to actual conditions.
Wherein, second temperature threshold can be made as the harm working temperature of an electrokinetic cell, and when the Current Temperatures of electrokinetic cell endangered working temperature greater than this, electrokinetic cell was in the temperature environment of a hazardous, need carry out high-intensity cooling processing.
The input power of S104, the battery that gains impetus and at least one power in the power output;
When electrokinetic cell was supplied power, it had power output, when power battery charging, had input power, and when charging simultaneously and supplying power, it has this two power simultaneously.
Wherein, the preparation method of the input power of said electrokinetic cell and power output all can for: the current voltage of said electrokinetic cell and the current electric current of electrokinetic cell are multiplied each other.
Preferably, when electrokinetic cell has input power and power output simultaneously, can these two power be superposeed, obtain a gross power.
S105, said electrokinetic cell is carried out cooling processing according to the size of the power that is obtained control cooling device;
Concrete, step S105 can specifically be set to: when the power that is obtained during greater than first power threshold, carry out the intensity of cooling processing according to the size adjustment cooling device of the power that is obtained.
Need to prove that iff relies on the Current Temperatures of electrokinetic cell that cooling device is regulated, and possibly can't guarantee that electrokinetic cell is cooled off timely.Because need pass through long period of time from the Current Temperatures generation significant change that the power output or the input power of electrokinetic cell become greater to electrokinetic cell suddenly, and the internally-powered battery also need cool off during this period of time.Therefore, according to power cooling device is regulated simultaneously, can be cooled off electrokinetic cell timely, improved cooling effect.
Wherein, cooling device can comprise: air-cooled equipment, water cooling equipment etc.Be understood that easily these cooling devices all have the intensity attribute of work, and these attributes are controllable.In practical application, those skilled in the art are easy to learn through limited number of time experiment or according to experience in the past the working strength of the cooling device that is complementary with electrokinetic cell Current Temperatures and electrokinetic cell power.A kind of in addition method is, in different temperatures, the caloric value under the different capacity obtains the intensity with the cooling device work of electrokinetic cell coupling through electrokinetic cell.Be understood that easily, regulate cooling device work intensity and with the Current Temperatures and power match of electrokinetic cell after, just can well cool off for electrokinetic cell.
S106, carry out the intensity of cooling processing according to the size of said Current Temperatures adjustment cooling device;
When the Current Temperatures of electrokinetic cell is excessive, can consider the power of electrokinetic cell, direct electrokinetic cell the cooling according to the size of Current Temperatures gets final product.Be understood that easily when the Current Temperatures of electrokinetic cell was high more, the working strength of cooling device should be big more.
S107, control cooling device do not carry out cooling processing to electrokinetic cell.
When temperature of powered cell is very little, be in safe working temperature when following, can electrokinetic cell not carried out cooling processing.
The cooling means of a kind of electrokinetic cell that the embodiment of the invention provides can be regulated the intensity of cooling of cooling device according to the Current Temperatures of electrokinetic cell and the power of electrokinetic cell, thereby make that the cooling effect of electrokinetic cell is better simultaneously.
Corresponding with top method embodiment, 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 invention provides comprises:
Wherein, the temperature acquisition module can be connected for temperature sensor or with temperature sensor.
Wherein, first temperature threshold and second temperature threshold can be set and revise according to the real work situation, as according to ambient temperature, and the significance level of equipment, the coefficient of heat transfer of battery etc.Concrete, first temperature threshold can be made as the safe working temperature of electrokinetic cell, when the Current Temperatures of electrokinetic cell during less than this safe working temperature, thinks that electrokinetic cell can trouble free service that is:, need not carry out cooling processing; When greater than this safe working temperature, need carry out cooling processing.Wherein, second temperature threshold can be made as the harm working temperature of an electrokinetic cell, and when the Current Temperatures of electrokinetic cell endangered working temperature greater than this, electrokinetic cell was in the temperature environment of a hazardous, need 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, is used for obtaining at least one power of the input power and the power output of electrokinetic cell;
When electrokinetic cell was supplied power, it had power output, when power battery charging, had input power, and when charging simultaneously and supplying power, it has this two power simultaneously.
The input power of electrokinetic cell and the preparation method of power output are: the current voltage of said electrokinetic cell and the current electric current of electrokinetic cell are multiplied each other.
Wherein, the cooling control module can specifically be set to: when the Current Temperatures of electrokinetic cell during less than first temperature threshold, the control cooling device does not carry out cooling processing to electrokinetic cell.
When temperature of powered cell is very little, be in safe working temperature when following, can electrokinetic cell not carried out cooling processing.
The cooling control module can also specifically be set to: when the Current Temperatures of electrokinetic cell during greater than second temperature threshold, carry out the intensity of cooling processing according to the size adjustment cooling device of said Current Temperatures.
When the Current Temperatures of electrokinetic cell is excessive, can consider the power of electrokinetic cell, direct electrokinetic cell the cooling according to the size of Current Temperatures gets final product.Be understood that easily when the Current Temperatures of electrokinetic cell was high more, the working strength of cooling device should be big more.
Need to prove that iff relies on the Current Temperatures of electrokinetic cell that cooling device is regulated, and possibly can't guarantee that electrokinetic cell is cooled off timely.Because need pass through long period of time from the Current Temperatures generation significant change that the power output or the input power of electrokinetic cell become greater to electrokinetic cell suddenly, and the internally-powered battery also need cool off during this period of time.Therefore, according to power cooling device is regulated simultaneously, can be cooled off electrokinetic cell timely, improved cooling effect.
Wherein, cooling device can comprise: air-cooled equipment, water cooling equipment etc.Be understood that easily these cooling devices all have the intensity attribute of work, and these attributes are adjustable.In practical application, those skilled in the art are easy to learn through limited number of time experiment or according to experience in the past the working strength of the cooling device that is complementary with electrokinetic cell Current Temperatures and electrokinetic cell power.A kind of in addition method is, in different temperatures, the caloric value under the different capacity obtains the intensity with the cooling device work of electrokinetic cell coupling through electrokinetic cell.Be understood that easily, regulate cooling device work intensity and with the Current Temperatures and power match of electrokinetic cell after, just can well cool off for electrokinetic cell.
The cooling system of a kind of electrokinetic cell that the embodiment of the invention provides can be regulated the intensity of cooling of cooling device according to the Current Temperatures of electrokinetic cell and the power of electrokinetic cell, thereby make that the cooling effect of electrokinetic cell is better simultaneously.
For the convenience of describing, be divided into various unit with function when describing above the device and describe respectively.Certainly, when embodiment of the present invention, can in same or a plurality of softwares and/or hardware, realize the function of each unit.
Description through above execution mode can know, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform.Each embodiment in this specification all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses all is the difference with other embodiment.Especially, for system embodiment, because it is basically similar in appearance to method embodiment, so describe fairly simplely, relevant part gets final product referring to the part explanation of method embodiment.System embodiment described above only is schematic; Wherein said unit as the separating component explanation can or can not be physically to separate also; The parts that show as the unit can be or can not be physical locations also; Promptly can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Can realize the purpose of present embodiment scheme according to the needs selection some or all of module wherein of reality.Those of ordinary skills promptly can understand and implement under the situation of not paying creative work.
The above only is an embodiment of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. the cooling means of an electrokinetic cell is characterized in that, comprising:
The Current Temperatures of battery and compare with first temperature threshold and second temperature threshold gains impetus; When said Current Temperatures during, said electrokinetic cell is carried out cooling processing according to the input power of electrokinetic cell and the size control cooling device of at least one power in the power output greater than said first temperature threshold and less than second temperature threshold.
2. method according to claim 1 is characterized in that, according to the input power of electrokinetic cell and the size control cooling device of at least one power in the power output said electrokinetic cell is carried out cooling processing, specifically comprises:
The input power of battery that gains impetus and at least one power in the power output;
Carry out the intensity of cooling processing according to the size adjustment cooling device of the power that is obtained.
3. method according to claim 1 is characterized in that, when the Current Temperatures of electrokinetic cell was not more than first temperature threshold, the control cooling device did not carry out cooling processing to said electrokinetic cell.
4. method according to claim 1 is characterized in that, when the Current Temperatures of electrokinetic cell is not less than second temperature threshold, carries out the intensity of cooling processing according to the size adjustment cooling device of said Current Temperatures.
5. method according to claim 1 is characterized in that, the input power of said electrokinetic cell and the preparation method of power output are: the current voltage of said electrokinetic cell and the current electric current of electrokinetic cell are multiplied each other.
6. the cooling system of an electrokinetic cell is characterized in that, comprising:
The temperature acquisition module, the Current Temperatures of the battery that is used to gain impetus;
Temperature comparison module is used for the Current Temperatures of said electrokinetic cell and first temperature threshold and second temperature threshold are compared;
The cooling control module; Be used for according to the input power of electrokinetic cell and the size control cooling device of at least one power in the power output said electrokinetic cell being carried out cooling processing when said Current Temperatures during greater than said first temperature threshold and less than second temperature threshold.
7. system according to claim 6 is characterized in that, said cooling control module comprises: power obtains submodule and cooling adjustment submodule,
Said power obtains submodule, is used for obtaining at least one power of the input power and the power output of electrokinetic cell;
Said cooling adjustment submodule is used for adjusting the intensity that cooling device carries out cooling processing according to the size of the power that is obtained.
8. system according to claim 6 is characterized in that, said cooling control module specifically is set to: when the Current Temperatures of electrokinetic cell was not more than first temperature threshold, the control cooling device did not carry out cooling processing to electrokinetic cell.
9. system according to claim 6; It is characterized in that; Said cooling control module specifically is set to: when the Current Temperatures of electrokinetic cell is not less than second temperature threshold, carry out the intensity of cooling processing according to the size adjustment cooling device of said Current Temperatures.
10. system according to claim 6 is characterized in that, the input power of said electrokinetic cell and the preparation method of power output are: the current voltage of said electrokinetic cell and the current electric current of electrokinetic cell are multiplied each other.
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| CN201210014062.9A CN102569934B (en) | 2012-01-17 | 2012-01-17 | Method and system for cooling power battery |
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| CN201210014062.9A CN102569934B (en) | 2012-01-17 | 2012-01-17 | Method and system for cooling power battery |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105514525A (en) * | 2016-03-02 | 2016-04-20 | 安徽江淮汽车股份有限公司 | Temperature control device and control method for batteries of hybrid electric vehicles |
| CN106229574A (en) * | 2016-08-18 | 2016-12-14 | 宁德时代新能源科技股份有限公司 | Cooling method and system for battery pack |
| CN107799848A (en) * | 2017-11-13 | 2018-03-13 | 河南森源电气股份有限公司 | A kind of battery energy storage equipment and its heat management system |
| 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 |
| CN109278588A (en) * | 2018-10-24 | 2019-01-29 | 重庆长安汽车股份有限公司 | A method of control lithium battery temperature |
| CN109599624A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle battery |
| CN109599637A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle battery |
| CN109599617A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle battery |
| CN109599605A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle battery |
| CN109599636A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle battery |
| CN110176656A (en) * | 2018-04-11 | 2019-08-27 | 山东交通学院 | A kind of electric automobile power battery temprature control method |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105514525A (en) * | 2016-03-02 | 2016-04-20 | 安徽江淮汽车股份有限公司 | Temperature control device and control method for batteries of hybrid electric vehicles |
| CN106229574A (en) * | 2016-08-18 | 2016-12-14 | 宁德时代新能源科技股份有限公司 | Cooling method and system for battery pack |
| 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 |
| CN109599636A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle battery |
| CN109599624A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle battery |
| CN109599637A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle battery |
| CN109599617A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle battery |
| CN109599605A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | The temperature control method and humidity control system of on-vehicle 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 |
| 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 |
| CN107799848A (en) * | 2017-11-13 | 2018-03-13 | 河南森源电气股份有限公司 | A kind of battery energy storage equipment and its heat management system |
| 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 |
| CN109278588A (en) * | 2018-10-24 | 2019-01-29 | 重庆长安汽车股份有限公司 | A method of control lithium battery temperature |
| 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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| CN102569934B (en) | 2014-04-23 |
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