CN113108507A - Battery cooling and unit integrated refrigerating system - Google Patents
Battery cooling and unit integrated refrigerating system Download PDFInfo
- Publication number
- CN113108507A CN113108507A CN202110329626.7A CN202110329626A CN113108507A CN 113108507 A CN113108507 A CN 113108507A CN 202110329626 A CN202110329626 A CN 202110329626A CN 113108507 A CN113108507 A CN 113108507A
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- battery
- refrigeration system
- battery cooling
- energy storage
- compressor
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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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- 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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- Manufacturing & Machinery (AREA)
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a battery cooling and unit integrated refrigerating system. The system comprises an external alternating current power supply, a semi-controlled rectifying device, a direct current loop capacitor, an energy storage unit and a refrigerating system, wherein the external alternating current power supply is connected with the semi-controlled rectifying device; the battery heat exchanger is arranged on the energy storage unit and connected with a back pressure controller, and the battery heat exchanger and the back pressure controller are both connected with a refrigerating system. The battery cooling and unit integrated refrigerating system provided by the invention is provided with a refrigerating system which adopts alternating current and direct current to supply power at the same time, and a part of refrigerant of the refrigerating system is introduced into the energy storage battery heat exchanger to carry out heat exchange so as to achieve the purpose of cooling the energy storage battery.
Description
Technical Field
The invention relates to the field of refrigeration systems, in particular to a battery cooling and unit integrated refrigeration system.
Background
With the continuous importance of the national energy policy on carbon emission and carbon neutralization, the refrigeration system is gradually changed to use a direct-current brushless frequency conversion system as an energy-using household. The principle of the system is that according to the peak-valley difference of the power load, the off-peak electricity can be stored by the energy storage system and then released during the peak period of the power utilization, so that the problem of insufficient off-peak electricity utilization is solved, and the problem of insufficient peak electricity utilization is solved.
And traditional energy storage system's energy storage mode is mostly to adopt to store the electricity to the storage unit through the method of alternating current to direct current to need to become the alternating current input electric wire netting with direct current contravariant when later stage uses and use, wherein, always along with energy loss in the charge-discharge process of battery, and the energy of loss becomes heat energy mostly, thereby can make the battery temperature rise, can cause consume and risk. In order to reduce the temperature of the energy storage battery, an additional water chiller is generally used to provide cold water to take away the heat of the battery for cooling, thereby consuming more resources. Furthermore, the cold water used for cooling is generally not deionized and is itself electrically conductive, and in the event of a leak, it affects the insulation of the battery material, resulting in a short circuit and thus the safety of the battery and thus the entire energy storage system.
Disclosure of Invention
In order to solve the problems, the invention provides a battery cooling and unit integrated refrigerating system.
According to one aspect of the invention, a battery cooling and unit integrated refrigeration system is provided, which comprises an external alternating current power supply, a half-control rectification device, a direct current loop capacitor, an energy storage unit and a refrigeration system, wherein the external alternating current power supply is connected with the half-control rectification device, the direct current loop capacitor, the energy storage unit and the refrigeration system are all connected to the half-control rectification device, and the direct current loop capacitor and the energy storage unit are connected in parallel; the energy storage unit is provided with a battery heat exchanger, the battery heat exchanger is connected with a back pressure controller, and the battery heat exchanger and the back pressure controller are both connected with the refrigerating system.
The battery cooling and unit integrated refrigerating system provided by the invention is provided with a refrigerating system which adopts alternating current and direct current to supply power simultaneously, a part of refrigerant of the refrigerating system is introduced into the energy storage battery heat exchanger to carry out heat exchange so as to achieve the purpose of cooling the energy storage battery, and the refrigerant is non-conductive, so that the control precision is higher, and the effect of avoiding surface condensation of the heat exchanger can be achieved by adjusting the cooling temperature.
In some embodiments, the operating voltage of the battery of the energy storage unit is the rated voltage of the busbar, and the error is not more than 5%. Thereby, the operating voltage parameter of the battery is set.
In some embodiments, the battery of the energy storage unit is an acid lithium iron phosphate battery or a lead acid battery. Thus, the battery type of the energy storage unit is provided, which should be suitable for the battery cooling function of the present system.
In some embodiments, the refrigeration system includes a three-phase IGBT inverter, a compressor, a condenser, a throttling device, and an evaporator; the three-phase IGBT inverter is connected with the semi-controlled rectifying equipment, the compressor is connected with the three-phase IGBT inverter, and the compressor, the condenser, the throttling device and the evaporator are sequentially connected with one another to form a cycle. Thus, the respective structures and connection modes of the refrigeration system are provided.
In some embodiments, the compressor is a magnetic levitation compressor. Thereby, an appropriate kind of compressor is provided.
In some embodiments, the condenser is connected to a battery cooling throttle device, which is connected to the battery heat exchanger. Therefore, the liquid refrigerant supplied by the condenser can be further throttled and depressurized by the battery cooling throttling device to become a gas-liquid two-phase low-temperature low-pressure refrigerant.
In some embodiments, the compressor is further connected to a hot gas bypass device connected to the battery heat exchanger and in parallel with the battery cooling throttle device. Therefore, the hot gas bypass device can heat the battery when the ambient temperature is too low, so that the battery can operate in a safe environment.
In some embodiments, the evaporator is connected to the backpressure controller. Thus, the refrigerant gas having passed through the battery heat exchanger passes through the back pressure controller and is discharged into the evaporator.
In some embodiments, the back pressure controller is connected to a conduit between the compressor and the evaporator. Therefore, when the back pressure controller is all gas, the efficiency of the system can be improved by directly leading the gas into the suction pipeline of the compressor.
Drawings
FIG. 1 is a block diagram of a battery cooling and unit integrated refrigeration system according to an embodiment of the present invention;
FIG. 2 is a schematic view of an alternative configuration of the battery cooling and unit integrated refrigeration system of FIG. 1;
fig. 3 is a schematic structural diagram of a battery cooling and unit integrated refrigeration system shown in fig. 1, which is provided with a hot gas bypass device.
In the figure: the system comprises an external alternating-current power supply 1, a half-controlled rectifying device 2, a direct-current loop capacitor 3, an energy storage unit 4, a three-phase IGBT inverter 5, a compressor 6, a condenser 7, a throttling device 8, an evaporator 9, a battery cooling throttling device 10, a battery heat exchanger 11, a backpressure controller 12, a hot-gas bypass device 13 and a refrigerating system 100.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 schematically shows the structure of a battery cooling and unit integrated refrigeration system according to an embodiment of the present invention. As shown in fig. 1, the system mainly includes an external ac power supply 1, a half-controlled rectifier device 2, a dc loop capacitor 3, an energy storage unit 4, and a refrigeration system 100, where the external ac power supply 1 is connected to the half-controlled rectifier device 2, the dc loop capacitor 3, the energy storage unit 4, and the refrigeration system 100 are all connected to a busbar of the half-controlled rectifier device 2, and the positive and negative poles of the dc loop capacitor 3 and the energy storage unit 4 are connected in parallel.
The external alternating current power supply 1 inputs alternating current, and the half-controlled rectifying device 2 can rectify the alternating current input by the external alternating current power supply 1 into direct current, and then input the direct current into the direct current loop capacitor 3, the energy storage unit 4 and the refrigerating system 100 for filtering, storing electric power, refrigerating and the like.
The direct current loop capacitor 3 is used for filtering the rectified direct current so as to stabilize the voltage quality of the direct current.
The energy storage unit 4 has a battery, and can store the rectified dc power to output electric energy in time when needed, for example, when the ac input is missing. The battery of the energy storage unit 4 is an acid-phosphate lithium iron battery or a lead-acid battery, the working voltage of the battery is the rated voltage of the bus bar, and the error is not more than 5%.
A battery heat exchanger 11 is arranged on the energy storage unit 4, and the battery heat exchanger 11 is connected to a backpressure controller 12. The battery heat exchanger 11 can exchange heat away in time when the battery of the energy storage unit 4 generates heat, so as to avoid overheating of the battery; and the backpressure controller 12 can influence the heat exchange temperature range in the battery heat exchanger 11 by controlling the pressure, so that the condensation is avoided. Furthermore, the battery heat exchanger 11 and the back pressure controller 12 are both connected to the refrigeration system 100, and the refrigeration system 100 can supply refrigerant to the battery heat exchanger 11 and the back pressure controller 12.
The refrigeration system 100 mainly comprises a three-phase IGBT inverter 5, a compressor 6, a condenser 7, a throttling device 8 and an evaporator 9, wherein the three-phase IGBT inverter 5 is connected with the half-controlled rectifying device 2, and the compressor 6 is connected with the three-phase IGBT inverter 5. The three-phase IGBT inverter 5 can invert the input dc power into three-phase ac power to drive the motor of the compressor 6 to operate, and the compressor 6 is used to compress the refrigerant.
The condenser 7 can cool the compressed refrigerant vapor to change the refrigerant vapor into a high-pressure normal-temperature liquid refrigerant, the throttling device 8 can throttle and reduce the pressure of the liquid refrigerant to change the refrigerant into a gas-liquid two-phase low-temperature low-pressure refrigerant, and the evaporator 9 can absorb the ambient heat to heat the liquid refrigerant into a gas. In which a compressor 6, a condenser 7, a throttle device 8 and an evaporator 9 are connected to one another in this order to form a cycle in which refrigerant can be changed in temperature and form and supplied to a desired mechanism as needed.
The condenser 7 is connected to a battery heat exchanger 11, which can be supplied with liquid refrigerant for heat exchange purposes. The evaporator 9 is connected to the back pressure controller 12, and specifically, when liquid exists in the back pressure controller 12, the evaporator 9 needs to be connected to the back pressure controller 12, and the refrigerant gas passing through the battery converter 11 can be discharged into the evaporator 9 after passing through the back pressure controller 12, and then enter the compressor 6.
Preferably, the compressor 6 is a magnetic levitation compressor.
Preferably, a battery cooling throttle 10 may be provided between the condenser 7 and the battery heat exchanger 11 as required, i.e. the condenser 7 is connected to the battery cooling throttle 10 and the battery cooling throttle 10 is connected to the battery heat exchanger 11. The battery cooling throttle device 10 has the effect similar to the throttle device 8 in the refrigeration system 100, and can throttle and depressurize the liquid refrigerant to change the liquid refrigerant into a gas-liquid two-phase low-temperature low-pressure refrigerant for use by the battery heat exchanger 11. When the battery temperature rises to a preset temperature, the battery cooling throttling device 10 is opened, so that the refrigerant can flow into the battery heat exchanger 11 to cool the battery, and the refrigerant subjected to heat exchange by the heat exchanger 5 returns to a low-pressure area of the refrigeration system.
Fig. 2 shows another configuration of the battery cooling and unit integrated refrigeration system of fig. 1. As shown in fig. 2, in the case where the back pressure controller 12 does not have liquid but only gas, the evaporator 9 may be connected to a pipe between the compressor 6 and the evaporator 9 so as to be directly introduced into a suction line of the compressor 6, and the operation efficiency of the entire system may be improved.
Fig. 3 shows the structure of the battery cooling and unit integrated refrigeration system of fig. 1 when a hot gas bypass device is provided. As shown in fig. 3, the compressor 6 is also connected to a hot gas bypass 13, the hot gas bypass 13 is connected to the battery heat exchanger 10, and the hot gas bypass 13 is connected in parallel to the battery cooling throttle 10. The hot gas bypass device 13 can pass through a refrigerant (including a gas refrigerant, a liquid refrigerant or a gas-liquid two-phase refrigerant) from the high-pressure side of the refrigeration system, and can heat the battery through hot gas bypass when the ambient temperature is low, so as to ensure that the battery is in a proper temperature environment.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a battery cooling and integrative refrigerating system of unit which characterized in that: the refrigeration system comprises an external alternating current power supply (1), a semi-controlled rectifying device (2), a direct current loop capacitor (3), an energy storage unit (4) and a refrigeration system (100), wherein the external alternating current power supply (1) is connected with the semi-controlled rectifying device (2), the direct current loop capacitor (3), the energy storage unit (4) and the refrigeration system (100) are all connected to the semi-controlled rectifying device (2), and the direct current loop capacitor (3) is connected with the energy storage unit (4) in parallel; the energy storage unit (4) is provided with a battery heat exchanger (11), the battery heat exchanger (11) is connected with a back pressure controller (12), and the battery heat exchanger (11) and the back pressure controller (12) are both connected with the refrigeration system (100).
2. A battery cooling and unit integrated refrigeration system according to claim 1, wherein: the working voltage of the battery of the energy storage unit (4) is the rated voltage of the bus bar, and the error does not exceed 5%.
3. A battery cooling and unit integrated refrigeration system according to claim 1, wherein: the battery of the energy storage unit (4) is an acid-phosphate lithium iron battery or a lead-acid battery.
4. A battery cooling and unit integrated refrigeration system according to claim 1, wherein: the refrigeration system (100) comprises a three-phase IGBT inverter (5), a compressor (6), a condenser (7), a throttling device (8) and an evaporator (9); the three-phase IGBT inverter (5) is connected with the semi-controlled rectifying device (2), the compressor (6) is connected with the three-phase IGBT inverter (5), and the compressor (6), the condenser (7), the throttling device (8) and the evaporator (9) are sequentially connected with one another to form a circulation.
5. A battery cooling and unit integrated refrigeration system according to claim 4, wherein: the compressor (6) is a magnetic suspension compressor.
6. A battery cooling and unit integrated refrigeration system according to claim 4, wherein: the condenser (7) is connected with a battery cooling throttling device (10), and the battery cooling throttling device (10) is connected with the battery heat exchanger (11).
7. A battery cooling and unit integrated refrigeration system according to any one of claim 6, wherein: the compressor (6) is also connected with a hot gas bypass device (13), and the hot gas bypass device (13) is connected with the battery heat exchanger (11) and is connected with the battery cooling throttling device (10) in parallel.
8. A battery cooling and unit integrated refrigeration system according to claim 4, wherein: the evaporator (9) is connected with the backpressure controller (12).
9. A battery cooling and unit integrated refrigeration system according to claim 4, wherein: the backpressure controller (12) is connected to a pipeline between the compressor (6) and the evaporator (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110329626.7A CN113108507A (en) | 2021-03-26 | 2021-03-26 | Battery cooling and unit integrated refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110329626.7A CN113108507A (en) | 2021-03-26 | 2021-03-26 | Battery cooling and unit integrated refrigerating system |
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| Publication Number | Publication Date |
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| CN113108507A true CN113108507A (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110329626.7A Pending CN113108507A (en) | 2021-03-26 | 2021-03-26 | Battery cooling and unit integrated refrigerating system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110174004A1 (en) * | 2008-07-29 | 2011-07-21 | Thomas Heckenberger | Device for cooling a heat source of a motor vehicle |
| CN102214945A (en) * | 2010-12-21 | 2011-10-12 | 深圳市泰昂能源科技股份有限公司 | Direct current power system based on paralleling connection of storage batteries |
| KR20170013437A (en) * | 2015-07-27 | 2017-02-07 | 한온시스템 주식회사 | Battery cooling system for vehicle |
| CN107565189A (en) * | 2016-07-01 | 2018-01-09 | 福特全球技术公司 | Battery coolant circuit controls |
| CN108790675A (en) * | 2017-05-02 | 2018-11-13 | 福特全球技术公司 | Vehicular charging and atmosphere control system |
| CN109489283A (en) * | 2018-11-20 | 2019-03-19 | 华霆（合肥）动力技术有限公司 | Battery pouring-basket cooling system and battery pack structure |
| CN215216784U (en) * | 2021-03-26 | 2021-12-17 | 必信能源科技(苏州)有限公司 | Battery cooling and unit integrated refrigerating system |
-
2021
- 2021-03-26 CN CN202110329626.7A patent/CN113108507A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110174004A1 (en) * | 2008-07-29 | 2011-07-21 | Thomas Heckenberger | Device for cooling a heat source of a motor vehicle |
| CN102214945A (en) * | 2010-12-21 | 2011-10-12 | 深圳市泰昂能源科技股份有限公司 | Direct current power system based on paralleling connection of storage batteries |
| KR20170013437A (en) * | 2015-07-27 | 2017-02-07 | 한온시스템 주식회사 | Battery cooling system for vehicle |
| CN107565189A (en) * | 2016-07-01 | 2018-01-09 | 福特全球技术公司 | Battery coolant circuit controls |
| CN108790675A (en) * | 2017-05-02 | 2018-11-13 | 福特全球技术公司 | Vehicular charging and atmosphere control system |
| CN109489283A (en) * | 2018-11-20 | 2019-03-19 | 华霆（合肥）动力技术有限公司 | Battery pouring-basket cooling system and battery pack structure |
| CN215216784U (en) * | 2021-03-26 | 2021-12-17 | 必信能源科技(苏州)有限公司 | Battery cooling and unit integrated refrigerating system |
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Address after: 215000 No.158 Jinshajiang Road, high tech Zone, Suzhou City, Jiangsu Province Applicant after: Bixin energy technology (Suzhou) Co.,Ltd. Address before: 215000 No.158 Jinshajiang Road, high tech Zone, Suzhou City, Jiangsu Province Applicant before: SUZHOU BSE AIR CONDITIONER Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210713 |