CN213778256U - High-efficiency energy-saving water cooling unit system of high-density energy storage battery - Google Patents
High-efficiency energy-saving water cooling unit system of high-density energy storage battery Download PDFInfo
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- CN213778256U CN213778256U CN202022099780.3U CN202022099780U CN213778256U CN 213778256 U CN213778256 U CN 213778256U CN 202022099780 U CN202022099780 U CN 202022099780U CN 213778256 U CN213778256 U CN 213778256U
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Abstract
The utility model discloses a high-efficiency energy-saving water cooling unit system of a high-density energy storage battery, which comprises a cooling liquid circulation loop and a vapor compression refrigeration loop, wherein the cooling liquid circulation loop comprises a battery cooler, a circulating pump, an expansion tank and a pipeline heater, the vapor compression refrigeration loop comprises a compressor, a condensing coil and an expansion valve, the cooling liquid circulation loop and the vapor compression refrigeration loop realize heat exchange through the coupling of an intermediate heat exchanger, the compressor is connected with a first electromagnetic valve in parallel, the expansion valve is connected with a second electromagnetic valve in parallel, the system also comprises a natural cooling loop and a three-way regulating valve, the natural cooling loop comprises a natural cooling coil, the three-way regulating valve respectively forms A, B, C three conduction positions at the cross connection part of the natural cooling coil, the intermediate heat exchanger and the pipeline heater, and the system can realize four refrigeration modes, the running time of the compressor is reduced, the annual refrigeration energy efficiency of the unit is greatly improved, and the energy-saving performance is better.
Description
Technical Field
The utility model relates to an energy storage battery technical field, concretely relates to energy-efficient water cooling unit system of high density energy storage battery.
Background
At present, the electric quantity stored by a large energy storage system is often higher than dozens of kilowatt hours or even several megawatts hours, the whole system is presented in the form of a large box body, a cabinet or a container, in order to ensure that an energy storage battery system is always within a safe temperature range, a battery cooling system is particularly important, the mode of combining a water cooling system and an air conditioning system is generally adopted at present, wherein the water cooling system cools the energy storage battery, the air conditioning system provides cold quantity through mechanical refrigeration of a compressor, the water cooling system and the air conditioning system realize heat exchange through coupling of an intermediate heat exchanger, the running power consumption of the compressor is large, when the temperature is low, the battery can be cooled normally without the cold supply and water cooling system of the air conditioning system, the compressor continues to run, so that the energy consumption is wasted, and the energy is not saved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high-efficient energy-conserving water cooling unit system of high density energy storage battery to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a high-efficiency energy-saving water cooling unit system of a high-density energy storage battery comprises a cooling liquid circulation loop and a vapor compression refrigeration loop, wherein the cooling liquid circulation loop comprises a battery cooler, a circulation pump, an expansion tank and a pipeline heater, the battery cooler is directly contacted with the energy storage battery, a first circulation medium is arranged inside the cooling liquid circulation loop, the vapor compression refrigeration loop comprises a compressor, a condensation coil and an expansion valve, a second circulation medium is arranged inside the vapor compression refrigeration loop, the cooling liquid circulation loop and the vapor compression refrigeration loop are coupled through an intermediate heat exchanger to realize heat exchange, the compressor is connected with a first electromagnetic valve in parallel, and the expansion valve is connected with a second electromagnetic valve in parallel; the cooling system also comprises a natural cooling loop, wherein the natural cooling loop comprises a natural cooling coil; the natural cooling coil pipe heat exchanger further comprises a three-way regulating valve, wherein A, B, C three conducting positions are formed at the cross connection positions of the natural cooling coil pipe, the intermediate heat exchanger and the pipeline heater respectively.
Preferably, the first circulating medium is an aqueous ethylene glycol solution.
Preferably, the second circulating medium is R410A.
Preferably, the condensing coil radiates heat through a condensing fan.
Preferably, the natural cooling coil dissipates heat through a condensing fan.
Preferably, the compressor model is Hitachi WHP09100AUKPA8LT 6.
Preferably, the circulating pump model is granoflow CME 15-1.
Preferably, the natural cooling coil is of a type of FC-030.
The utility model discloses can realize four kinds of operation modes (1) compressor refrigeration mode (2) heat pipe refrigeration mode (3) natural cooling coil pipe cooling mode (4) compressor refrigeration and natural cooling coil pipe refrigerated mixed refrigeration mode, when ambient temperature is higher, compressor mechanical refrigeration provides cold volume for the battery cooling; in spring and autumn transition seasons, the natural cooling mode can not provide enough cold energy when being operated alone, the compressor needs to supplement the deficient cold energy, and the mixed operation mode of the natural cooling coil cooling and the compressor refrigeration is realized; when the ambient temperature is lower, the compressor stops working, the vapor compression refrigeration loop is switched to a heat pipe refrigeration mode or a natural cooling coil cooling mode, in the two modes, only a condensing fan and a circulating pump with lower power consumption work, the compressor with the largest power consumption stops working, the running time of the compressor is reduced, the annual refrigeration energy efficiency of the unit is greatly improved, the energy-saving performance is better, meanwhile, the heat pipe refrigeration mode and the natural cooling coil cooling mode can be mutually backed up, when one system breaks down, the other refrigeration mode can be automatically switched to, and the reliability of battery cooling is improved.
Drawings
Fig. 1 is a sectional view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the high-efficiency energy-saving water cooling unit system of a high-density energy storage battery includes a coolant circulation loop 1 and a vapor compression refrigeration loop 2, the coolant circulation loop 1 includes a battery cooler 11, a circulation pump 12, an expansion tank 13, and a pipe heater 14, the battery cooler 11 directly contacts the energy storage battery (not shown in the figure), the coolant circulation loop 1 has a first circulation medium 6 therein, the first circulation medium 6 may be water or an aqueous solution of ethylene glycol, preferably, the aqueous solution of ethylene glycol may be subjected to concentration matching according to different use regions, and has higher applicability, the vapor compression refrigeration loop 2 includes a compressor 21, a condensation coil 22, and an expansion valve 23, the vapor compression refrigeration loop 2 has a second circulation medium 7 therein, the second circulation medium 7 may be an R134a or R410A type refrigerant, in this embodiment, R410A is used in cooperation with a model, and the coolant circulation loop 1, The vapor compression refrigeration loop 2 realizes heat exchange through the coupling of the intermediate heat exchanger 5, the second circulating medium 7 is heated up after passing through the intermediate heat exchanger 5, and the condensing coil 22 is cooled down through the heat dissipation of the condensing fan 24, the heat dissipation mode of the condensing coil 22 is not limited to air cooling, for example, the cooling down by water cooling can also be adopted, the compressor 21 is connected with the first electromagnetic valve 3 in parallel, and the expansion valve 23 is connected with the second electromagnetic valve 4 in parallel; this system still includes natural cooling circuit 8, natural cooling circuit 8 includes natural cooling coil pipe 9, natural cooling coil pipe 9 passes through condensing fan 24 heat dissipation cooling, equally also can adopt water-cooling, this system still includes three-way control valve 10, three-way control valve 10 is at natural cooling coil pipe 9, intermediate heat exchanger 5, the cross connection punishment of pipe heater 14 forms A, B, C three positions that switch on respectively, thereby the selectable formation AC direction switches on, the BC direction switches on, and AC, BC switches on three kinds of modes entirely, through controlling first solenoid valve 3, 4 kinds of operational modes are finally realized to the switching of second solenoid valve 4: 1. the system comprises a compressor refrigeration mode, a heat pipe refrigeration mode, a natural cooling coil cooling mode and a mixed refrigeration mode of compressor refrigeration and natural cooling coil cooling, wherein when the ambient temperature is higher, the compressor mechanically refrigerates to provide cold for battery cooling; in spring and autumn transition seasons, the natural cooling mode alone can not provide enough cold energy, the compressor supplements the deficient cold energy, and the natural cooling coil pipe cooling and the compressor refrigeration realize a mixed operation mode; when the ambient temperature is lower, the compressor stops working, the vapor compression refrigeration loop is switched to a heat pipe refrigeration mode or a natural cooling coil cooling mode, and is automatically switched to a corresponding operation mode according to the ambient temperature, so that the annual energy efficiency of the unit is improved to the maximum extent, meanwhile, the heat pipe refrigeration mode and the natural cooling coil cooling mode can be mutually backed up, when one system fails, the other refrigeration mode can be automatically switched to, and the reliability of battery cooling is improved.
The working principle is as follows: when the ambient temperature is above 20 ℃, the first electromagnetic valve 3 and the second electromagnetic valve 4 in the vapor compression refrigeration loop 2 are simultaneously closed, the compressor 21 is started for refrigeration, the three-way regulating valve 10 controls the BC direction to be conducted, the AC direction is closed, the compressor enters a refrigeration mode, the circulating pump 12 in the cooling liquid circulation loop 1 is started at the moment, the temperature of the first circulation medium 6 is increased after the heat productivity of the energy storage battery is absorbed, the first circulation medium is cooled through the intermediate heat exchanger 5, the vapor compression refrigeration loop 2 provides cold energy, the cooled first circulation medium 6 is accurately heated to a set temperature through the pipeline heater 14, and the first circulation medium enters the battery cooler 11 to cool the energy storage battery, so that the battery cooling circulation is completed.
When the ambient temperature is below 5 ℃, the first electromagnetic valve 3 and the second electromagnetic valve 4 in the vapor compression refrigeration loop 2 are simultaneously opened, the compressor 21 is closed, the three-way regulating valve 10 controls the BC direction to be conducted, the AC direction is closed, a heat pipe refrigeration mode is entered, the circulating pump 12 in the cooling liquid circulation loop 1 is opened at the moment, the temperature of the first circulating medium 6 is raised after absorbing the heat of the energy storage battery, the temperature is reduced through the intermediate heat exchanger 5, the vapor compression refrigeration loop 2 only provides cold energy through the condensing coil 22, the first circulating medium 6 after being reduced in temperature is accurately heated to a set temperature through the pipeline heater 14, and the first circulating medium enters the battery cooler 11 to reduce the temperature of the energy storage battery, so that the battery cooling circulation is completed.
When the ambient temperature is below 5 ℃, another mode can be selected, the first electromagnetic valve 3 and the second electromagnetic valve 4 in the vapor compression refrigeration loop 2 are closed at the same time, the compressor 21 is closed, the three-way regulating valve 10 controls the BC direction to be closed, the AC direction is conducted, and the natural cooling coil cooling mode is entered, at this time, the circulating pump 12 in the cooling liquid circulation loop 1 is opened, the temperature of the first circulating medium 6 rises after absorbing the heat of the energy storage battery, the intermediate heat exchanger 5 cannot circulate, and only the temperature can be reduced through the natural cooling coil 9, namely, the natural cooling loop 8 provides cold energy, the cooled first circulating medium 6 is accurately heated to the set temperature through the pipeline heater 14, and enters the battery cooler 11 to reduce the temperature of the energy storage battery, so that the battery cooling circulation is completed.
When the ambient temperature is between 5 ℃ and 20 ℃, the first electromagnetic valve 3 and the second electromagnetic valve 4 in the vapor compression refrigeration loop 2 are closed at the same time, the compressor 21 is started for refrigeration, the three-way regulating valve 10 controls the BC direction and the AC direction to be conducted at the same time, the opening degree of the three-way regulating valve 10 is subjected to PID (proportion integration differentiation) regulation according to the temperature of the first circulating medium 6 at the inlet of the pipeline heater 14, specifically, by controlling the flow mixing proportion of the two flow paths in the AC direction and the BC direction, if the temperature of the first circulating medium 6 is higher than the set temperature of the pipeline heater 14, the three-way regulating valve 10 is opened greatly, if the temperature of the first circulating medium 6 is lower than the set temperature of the pipeline heater 14, the three-way regulating valve 10 is opened small, the mixed refrigeration mode of compressor refrigeration and natural cooling coil cooling is entered, at the moment, the circulating pump 12 in the cooling liquid circulation loop 1 is opened, and the temperature of the first circulating medium 6 rises after absorbing the heat of the energy storage battery, and passes through the intermediate heat exchanger 5 and the first circulating valve 4 at the same time The natural cooling coil 9 cools, i.e. the steam compression refrigeration loop 2 and the natural cooling loop 8 provide cooling capacity at the same time, the cooled first circulating medium 6 is accurately heated to a set temperature through the pipeline heater 14, and enters the battery cooler 11 to cool the energy storage battery, so that the battery cooling circulation is completed.
The utility model discloses in, the model of compressor 21 is Hitachi WHP09100AUKPA8LT6, condensing coil 22's model is for leading to flourishing FC080, the model of natural cooling coil 9 is FC-030, condensing fan 24's model is ShilebaiFN 050-VDK.4I.V7P1, the model of expansion valve 23 is Kale E2V30FSAC1, the model of first solenoid valve 3 is Danfosse EVR25, the model of second solenoid valve 4 is Danfosse EVR15, the model of intermediate heat exchanger 5 is beacon FHC-050-20, circulating pump 12 model is grand Fuge CME15-1, the model of expansion tank 13 is Lejia LJPZSX-0533-18L, the model of pipe heater 14 is Zhenjiang DF-10-380, the model of three-way regulating valve 10 is WaiVz 3300-25.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An efficient energy-saving water cooling unit system of a high-density energy storage battery comprises a cooling liquid circulation loop (1) and a vapor compression refrigeration loop (2), the cooling liquid circulation loop comprises a battery cooler (11), a circulation pump (12), an expansion tank (13) and a pipeline heater (14), the battery cooler is directly contacted with the energy storage battery, the cooling liquid circulation loop is internally provided with a first circulation medium (6), the vapor compression refrigeration loop comprises a compressor (21), a condensing coil (22) and an expansion valve (23), a second circulating medium (7) is arranged in the vapor compression refrigerating loop, the cooling liquid circulating loop and the vapor compression refrigerating loop are coupled through an intermediate heat exchanger (5) to realize heat exchange, the system is characterized in that the compressor is connected with a first electromagnetic valve (3) in parallel, and the expansion valve is connected with a second electromagnetic valve (4) in parallel; also comprises a natural cooling circuit (8) comprising a natural cooling coil (9); the natural cooling system is characterized by further comprising a three-way regulating valve (10), wherein A, B, C three conducting positions are formed at the cross connection positions of the natural cooling coil (9), the intermediate heat exchanger (5) and the pipeline heater (14) respectively.
2. The energy efficient water cooling battery system of claim 1, wherein the first circulating medium is an aqueous solution of ethylene glycol.
3. The high efficiency energy saving water cooling battery system of high density energy storage battery as claimed in claim 1, wherein the second circulating medium is R410A.
4. The high efficiency energy saving water cooling battery system of high density energy storage battery as claimed in claim 1, characterized in that the condensing coil dissipates heat by a condensing fan (24).
5. The high efficiency energy saving water cooling battery system of high density energy storage battery as claimed in claim 1, characterized in that the natural cooling coil dissipates heat by a condensing fan (24).
6. The high efficiency energy saving water cooling battery system of high density energy storage battery as claimed in claim 1, wherein the compressor model is heili WHP09100AUKPA8LT 6.
7. The high efficiency energy saving water cooling battery system of high density energy storage battery as claimed in claim 1, wherein the circulating pump model is glanful CME 15-1.
8. The energy efficient water cooling battery system of claim 1, wherein the natural cooling coil is of the type FC-030.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022099780.3U CN213778256U (en) | 2020-09-23 | 2020-09-23 | High-efficiency energy-saving water cooling unit system of high-density energy storage battery |
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| CN202022099780.3U CN213778256U (en) | 2020-09-23 | 2020-09-23 | High-efficiency energy-saving water cooling unit system of high-density energy storage battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447470A (en) * | 2021-12-23 | 2022-05-06 | 广州高澜节能技术股份有限公司 | Integrated cooling system of energy storage battery and control method |
| CN114520383A (en) * | 2022-02-22 | 2022-05-20 | 广东海悟科技有限公司 | Immersed liquid cooling system and control method |
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2020
- 2020-09-23 CN CN202022099780.3U patent/CN213778256U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447470A (en) * | 2021-12-23 | 2022-05-06 | 广州高澜节能技术股份有限公司 | Integrated cooling system of energy storage battery and control method |
| CN114520383A (en) * | 2022-02-22 | 2022-05-20 | 广东海悟科技有限公司 | Immersed liquid cooling system and control method |
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