Liquid cooling combined control energy storage system

Abstract

The utility model discloses a liquid cooling combined control energy storage system, which comprises a storage tank, a first liquid cooling pipeline group, a second liquid cooling pipeline group, a first plate heat exchanger and a second plate heat exchanger, and the secondary side outlet end of the first plate heat exchanger is communicated with the inlet end of the first liquid cooling pipeline group; the secondary side outlet end of the second plate heat exchanger is communicated with the inlet end of the second liquid cooling pipeline group; a first pipeline is communicated between the secondary side outlet end of the first plate heat exchanger and the secondary side outlet end of the second plate heat exchanger; a second pipeline is communicated between the secondary side inlet end of the first plate heat exchanger and the secondary side outlet end of the second plate heat exchanger; the storage tank is buried underground, and fluid in the storage tank exchanges heat with underground substances; the energy storage battery pack can be operated in multiple modes, is flexible to use, and ensures that heat exchange is carried out on the energy storage battery and the inverter so as to meet the heat dissipation requirement of an energy storage system, so that the temperature of the energy storage battery pack is in a better temperature range, and the energy storage system can operate stably.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of energy storage system, specifically relates to a liquid cooling combined control energy storage system. BACKGROUND

[0002] The energy storage system includes a power generation end for providing power, an energy storage battery for storing the power, and an inverter assembly for charging and discharging, and in the working operation, the energy storage battery and the inverter will generate a certain temperature, so that the generated heat at both places needs to be taken away, so that both can be in a suitable working temperature range, generally, a fan is used for temperature diffusion, and a liquid cooling mode is also used, but for the liquid cooling mode, the operation mode of liquid cooling can be further improved to have certain working flexibility. SUMMARY

[0003] In view of the above technical problems, the utility model aims at providing a liquid cooling combined control energy storage system with multiple operation modes, flexible use and low cost.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] The liquid cooling combined control energy storage system includes a storage tank, a first liquid cooling pipe group, a second liquid cooling pipe group, a first plate heat exchanger, a second plate heat exchanger,

[0006] The second side outlet end of the first plate heat exchanger is communicated with the inlet end of the first liquid cooling pipe group, and the outlet end of the first liquid cooling pipe group is communicated with the second side inlet end of the first plate heat exchanger;

[0007] The second side outlet end of the second plate heat exchanger is communicated with the inlet end of the second liquid cooling pipe group, and the outlet end of the second liquid cooling pipe group is communicated with the second side inlet end of the second plate heat exchanger;

[0008] The first pipe is communicated between the second side outlet end of the first plate heat exchanger and the second side outlet end of the second plate heat exchanger, and the first electric control valve is installed on the first pipe;

[0009] The second pipe is communicated between the second side inlet end of the first plate heat exchanger and the second side outlet end of the second plate heat exchanger, and the second electric control valve is installed on the second pipe;

[0010] The storage tank is buried underground, the fluid in the storage tank exchanges heat with underground matter, the storage tank is communicated with a liquid outlet pipe, a liquid return pipe and a liquid outlet delivery pump, and the liquid outlet delivery pump is installed on the liquid outlet pipe;

[0011] The outlet pipeline is connected with a third pipeline and a fourth pipeline, a third electric control valve is installed on the third pipeline, a fourth electric control valve is installed on the fourth pipeline, the third pipeline is communicated with the first plate heat exchanger on the primary side inlet, and the fourth pipeline is communicated with the second plate heat exchanger on the primary side inlet.

[0012] The first plate heat exchanger on the primary side outlet and the second plate heat exchanger on the primary side outlet are communicated with the liquid return pipeline.

[0013] As a further embodiment, the first liquid cooling pipeline group includes a plurality of first liquid cooling pipes, a first liquid cooling control valve and a first flow sensor are installed on the inlet end of each first liquid cooling pipe, a first temperature sensor is installed on the outlet end of each first liquid cooling pipe, and the first temperature sensor is in signal connection with the first liquid cooling control valve.

[0014] As a further embodiment, the second liquid cooling pipeline group includes a plurality of second liquid cooling pipes, a second liquid cooling control valve and a second flow sensor are installed on the inlet end of each second liquid cooling pipe, a second temperature sensor is installed on the outlet end of each second liquid cooling pipe, and the second temperature sensor is in signal connection with the second liquid cooling control valve.

[0015] As a further embodiment, the second plate heat exchanger on the primary side inlet or / and the second plate heat exchanger on the primary side inlet is communicated with a supplementary pipeline, and the supplementary pipeline is communicated with a supplementary tank.

[0016] As a further embodiment, a bypass pipeline is connected to the liquid return pipeline, the bypass pipeline is communicated with a finned radiator, a fifth electric control valve is installed on the bypass pipeline, a sixth electric control valve is installed on the liquid return pipeline, a liquid return temperature sensor is installed at the front end of the liquid return pipeline and the bypass pipeline, and the liquid return temperature sensor is in signal connection with the fifth electric control valve and the sixth electric control valve, respectively.

[0017] As a further embodiment, a partition plate arranged horizontally is fixedly arranged in the middle of the storage tank, a through hole is arranged on the partition plate, the liquid return pipeline is communicated with the top of the storage tank, and the outlet pipeline is communicated with the bottom of the storage tank; a metal radiation plate extending towards the outer periphery of the storage tank is fixedly arranged on the outer periphery of the storage tank.

[0018] The utility model discloses a technical scheme is adopted, the first liquid cooling pipeline group in the utility model is used as battery liquid cooling pipeline, is used for heat exchange to the energy storage battery in energy storage system, the second liquid cooling pipeline group is used as inverter liquid cooling pipeline, is used for heat exchange to the inverter in energy storage system, namely when the first electric control valve, second electric control valve are closed, first plate heat exchanger and first liquid cooling pipeline group, second plate heat exchanger and second liquid cooling pipeline group are independently operated respectively, can realize independent heat exchange to energy storage battery place / inverter place respectively, when the first electric control valve, second electric control valve, seventh electric control valve are opened, first plate heat exchanger can simultaneously first liquid cooling pipeline group, second liquid cooling pipeline group operate in coordination, when the first electric control valve, second electric control valve, eighth electric control valve are opened, second plate heat exchanger can simultaneously first liquid cooling pipeline group, second liquid cooling pipeline group operate in coordination, to satisfy different working condition use demand, when needing to maintain first plate heat exchanger (second plate heat exchanger), can select second plate heat exchanger (first plate heat exchanger) and operate. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is system structure schematic diagram of the utility model,

[0020] The reference signs in the drawings represent as follows:

[0021] 10, storage tank, 11, first liquid cooling pipeline group, 12, second liquid cooling pipeline group, 13, first plate heat exchanger, 14, second plate heat exchanger, 15, first pipeline, 16, first electric control valve, 17, seventh electric control valve, 18, second pipeline, 19, second electric control valve, 20, eighth electric control valve, 21, liquid outlet pipeline, 22, liquid return pipeline, 23, liquid outlet delivery pump, 24, third pipeline, 25, fourth pipeline, 26, third electric control valve, 27, fourth electric control valve, 28, first liquid cooling pipe, 29, first liquid cooling control valve, 30, first flow sensor, 31, first temperature sensor, 32, second liquid cooling pipe, 33, second liquid cooling control valve, 34, second flow sensor, 35, second temperature sensor, 36, supplementary pipeline, 37, supplementary control valve, 38, bypass pipeline, 39, finned radiator, 40, fifth electric control valve, 41, sixth electric control valve, 42, liquid return temperature sensor, 43, partition plate, 44, metal radiation plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please see Figure 1 As shown in the figure, the liquid cooling combined control energy storage system comprises a storage tank 10, a first liquid cooling pipe group 11, a second liquid cooling pipe group 12, a first plate heat exchanger 13 and a second plate heat exchanger 14. The storage tank 10 made of stainless steel is buried underground. The fluid in the storage tank 10 exchanges heat with underground substances. The fluid in the storage tank 10 can be water, air or cold-resistant fluid such as glycol water solution that does not affect fluidity under certain low temperature conditions. The storage tank 10 exchanges heat with soil and underground water in underground substances, so that the fluid in the storage tank 10 can also exchange heat, thereby adjusting the temperature of the fluid in the storage tank 10 to serve as a heat exchange medium in the subsequent plate exchange process.

[0024] The second side outlet of the first plate heat exchanger 13 is communicated with the inlet of the first liquid cooling pipe group 11, and the outlet of the first liquid cooling pipe group 11 is communicated with the second side inlet of the first plate heat exchanger 13. That is, the fluid in the second side of the first plate heat exchanger 13 can exchange heat in the first liquid cooling pipe group 11. The first liquid cooling pipe group 11 is used as a battery liquid cooling pipe to exchange heat with the battery. When the battery temperature is too high, the heat generated by the battery is removed. When the battery temperature is low in cold weather, a certain amount of heat energy is radiated to the battery, so as to ensure that the battery temperature tends to be stable under the working temperature condition.

[0025] The second side outlet of the second plate heat exchanger 14 is communicated with the inlet of the second liquid cooling pipe group 12, and the outlet of the second liquid cooling pipe group 12 is communicated with the second side inlet of the second plate heat exchanger 14. That is, the fluid in the second side of the second plate heat exchanger 14 can exchange heat in the second liquid cooling pipe group 12. The second liquid cooling pipe group 12 is used as an inverter liquid cooling pipe to exchange heat with the inverter. When the inverter temperature is too high, the heat generated by the inverter is removed. When the inverter temperature is low in cold weather, a certain amount of heat energy is radiated to the inverter, so as to ensure that the inverter temperature tends to be stable under the working temperature condition.

[0026] The first plate heat exchanger 13 is connected with the second plate heat exchanger 14 through the first pipe 15, and the first electric control valve 16 is installed on the first pipe 15; the seventh electric control valve 17 is installed on the second plate heat exchanger 13; the second pipe 18 is connected between the first plate heat exchanger 13 and the second plate heat exchanger 14, and the second electric control valve 19 is installed on the second pipe 18; the eighth electric control valve 20 is installed on the second plate heat exchanger 14; when the first electric control valve 16 and the second electric control valve 19 are closed, the first plate heat exchanger 13 and the first liquid cooling pipe group 11, and the second plate heat exchanger 14 and the second liquid cooling pipe group 12 are independently operated; when the first electric control valve 16, the second electric control valve 19 and the seventh electric control valve 17 are opened, the first plate heat exchanger can be operated in cooperation with the first liquid cooling pipe group 11 and the second liquid cooling pipe group 12; similarly, when the first electric control valve 16, the second electric control valve 19 and the eighth electric control valve 20 are opened, the second plate heat exchanger can be operated in cooperation with the first liquid cooling pipe group 11 and the second liquid cooling pipe group 12, so as to meet different working conditions and use requirements.

[0027] The storage tank 10 is connected with the liquid outlet pipe 21, the liquid return pipe 22 and the liquid outlet pump 23, the liquid outlet pump 23 is installed on the liquid outlet pipe 21, and the liquid outlet pump 23 draws the fluid in the storage tank 10; the liquid outlet pipe 21 is connected with the third pipe 24 and the fourth pipe 25, the third electric control valve 26 is installed on the third pipe 24, the fourth electric control valve 27 is installed on the fourth pipe 25, the third pipe 24 is connected with the first plate heat exchanger 13, and the fourth pipe 25 is connected with the second plate heat exchanger 14; the first plate heat exchanger 13 and the second plate heat exchanger 14 are connected with the liquid return pipe 22. Through the control of the third electric control valve 26 and the fourth electric control valve 27, the fluid in the storage tank 10 can flow to the first plate heat exchanger 13 or the second plate heat exchanger 14, or flow to the first plate heat exchanger 13 and the second plate heat exchanger 14 at the same time, and then flow back to the storage tank 10 through the liquid return pipe 22.

[0028] The first liquid cooling pipe group 11 includes a plurality of first liquid cooling pipes 28, a first liquid cooling control valve 29 and a first flow sensor 30 are installed at the inlet end of each first liquid cooling pipe 28, and a first temperature sensor 31 is installed at the outlet end of each first liquid cooling pipe 28, and the first temperature sensor 31 is in signal connection with the first liquid cooling control valve 29. When the medium needs to flow in a certain first liquid cooling pipe 28, the first liquid cooling control valve 29 on the corresponding liquid cooling pipe can be opened, and the flow sensor is used to monitor the flow rate; here the first liquid cooling control valve 29 can adopt an adjustable valve which can change the opening angle, when the temperature monitored by the first temperature sensor 31 is not within the set range, the flow rate of the fluid can be changed by adjusting the opening degree of the first liquid cooling control valve 29, so as to change the heat exchange capacity of the first liquid cooling pipe 28 corresponding to the battery.

[0029] Similarly, the second liquid cooling pipe group 12 includes a plurality of second liquid cooling pipes 32, a second liquid cooling control valve 33 and a second flow sensor 34 are installed at the inlet end of each second liquid cooling pipe 32, and a second temperature sensor 35 is installed at the outlet end of each second liquid cooling pipe 32, and the second temperature sensor is in signal connection with the second liquid cooling control valve 33. The second liquid cooling pipe group 12 can adopt the same operation mode as the first liquid cooling pipe group 11 for control, which will not be described here.

[0030] The inlet end of the secondary side of the first plate heat exchanger 13 is communicated with a supplementary pipe 36, the supplementary pipe 36 is communicated with a supplementary tank, and a supplementary control valve 37 is installed on the supplementary pipe 36. By opening the supplementary control valve 37, the fluid in the supplementary tank flows into the secondary side of the plate heat exchanger through the supplementary pipe 36.

[0031] The bypass pipe 38 is connected to the return pipe 22, the bypass pipe 38 is communicated with the finned radiator 39, the fifth electric control valve 40 is installed on the bypass pipe 38, the sixth electric control valve 41 is installed on the return pipe 22, and the return liquid temperature sensor 42 is installed at the front end of the connection between the return pipe 22 and the bypass pipe 38. The return liquid temperature sensor 42 is in signal connection with the fifth electric control valve 40 and the sixth electric control valve 41, respectively. When the return temperature of the primary side of the plate heat exchanger is within the set range, the sixth electric control valve 41 can be opened to directly flow into the storage tank 10; when the temperature monitored by the return liquid temperature sensor 42 is higher than the set value, the fifth electric control valve 40 can be opened to make the return medium pass through the finned radiator 39 to dissipate heat outward, so as to correspondingly reduce the temperature of the medium returned to the storage tank 10.

[0032] The middle part of the storage tank 10 is fixedly provided with a partition plate 43 arranged in horizontal direction, the partition plate 43 is provided with through holes, the liquid return pipeline 22 is communicated with the top of the storage tank 10, and the liquid outlet pipeline 21 is communicated with the bottom of the storage tank 10; when the liquid return pipeline 22 introduces the reflux medium from the upper part of the storage tank 10, the reflux medium flows to the lower part of the storage tank 10 through the through holes of the partition plate 43, is uniformly mixed with the medium in the storage tank 10, and the temperature of the fluid is balanced; the metal radiation plate 44 extending to the outer periphery of the storage tank 10 is fixedly arranged on the outer periphery of the storage tank 10. Through the arrangement of the metal radiation plate 44, the contact area of the storage tank 10 and the underground matter is increased, the heat exchange area of the storage tank 10 is correspondingly increased, and the temperature heat exchange of the medium in the storage tank 10 has a positive significance.

[0033] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid-cooled combined control energy storage system, comprising a storage tank, a first liquid-cooled piping group, a second liquid-cooled piping group, a first plate heat exchanger, and a second plate heat exchanger, characterized in that, The secondary side outlet of the first plate heat exchanger is connected to the inlet of the first liquid cooling pipeline group, and the outlet of the first liquid cooling pipeline group is connected to the secondary side inlet of the first plate heat exchanger. The secondary side outlet of the second plate heat exchanger is connected to the inlet of the second liquid cooling pipeline group, and the outlet of the second liquid cooling pipeline group is connected to the secondary side inlet of the second plate heat exchanger. A first pipe connects the secondary side outlet of the first plate heat exchanger and the secondary side outlet of the second plate heat exchanger, and a first electric control valve is installed on the first pipe. A second pipe connects the secondary side inlet of the first plate heat exchanger and the secondary side outlet of the second plate heat exchanger, and a second electric control valve is installed on the second pipe. The storage tank is buried underground, and the fluid inside the storage tank exchanges heat with the underground substances; the storage tank is connected to an outlet pipe, a return pipe, and an outlet transfer pump, with the outlet transfer pump installed on the outlet pipe; The liquid outlet pipe is connected to a third pipe and a fourth pipe. A third electric control valve is installed on the third pipe and a fourth electric control valve is installed on the fourth pipe. The third pipe is connected to the primary side inlet of the first plate heat exchanger and the fourth pipe is connected to the primary side inlet of the second plate heat exchanger. The primary outlet of the first plate heat exchanger and the primary outlet of the second plate heat exchanger are connected to the return liquid pipeline.

2. The liquid-cooled combined control energy storage system as described in claim 1, characterized in that, The first liquid cooling pipeline group includes multiple first liquid cooling pipes. A first liquid cooling control valve and a first flow sensor are installed at the inlet of each first liquid cooling pipe, and a first temperature sensor is installed at the outlet of each first liquid cooling pipe. The first temperature sensor and the first liquid cooling control valve form a signal connection.

3. The liquid-cooled combined control energy storage system as described in claim 1, characterized in that, The second liquid cooling pipeline assembly includes multiple second liquid cooling pipes. A second liquid cooling control valve and a second flow sensor are installed at the inlet of each second liquid cooling pipe, and a second temperature sensor is installed at the outlet of each second liquid cooling pipe. The second temperature sensor is connected to the second liquid cooling control valve via a signal connection.

4. The liquid-cooled combined control energy storage system as described in claim 1, characterized in that, The secondary side inlet of the first plate heat exchanger is connected to a supplementary pipe, and the supplementary pipe is connected to a supplementary tank.

5. The liquid-cooled combined control energy storage system as described in claim 1, characterized in that, A bypass pipe is connected to the return pipe, and the bypass pipe is connected to a finned radiator. A fifth electric control valve is installed on the bypass pipe, and a sixth electric control valve is installed on the return pipe. A return temperature sensor is installed at the front end of the junction of the return pipe and the bypass pipe, and the return temperature sensor forms a signal connection with the fifth electric control valve and the sixth electric control valve respectively.

6. The liquid-cooled combined control energy storage system as described in claim 1, characterized in that, A horizontally arranged partition plate is fixedly installed in the middle of the storage tank. The partition plate has through holes. The return liquid pipe is connected to the top of the storage tank, and the outlet liquid pipe is connected to the bottom of the storage tank. A metal radiating plate extending towards the outer periphery of the storage tank is fixedly installed on the outer periphery of the storage tank.

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