Electrochemical energy storage heat recovery control device

Abstract

The utility model discloses an electrochemical energy storage heat recovery control device, and relates to the technical field of energy recovery devices. The electrochemical energy storage heat recovery control device comprises a battery heat dissipation end, a refrigeration end and a heat recovery end, the battery heat dissipation end comprises a battery pack, a cold plate, a water pump and a first heat exchanger, the cold plate, the water pump and the first heat exchanger are connected through pipelines, and the refrigeration end comprises a first heat exchanger, a first compressor, a heat recoverer, a condenser and an electromagnetic expansion valve. The first heat exchanger, the first compressor, the heat recoverer, the condenser and the electromagnetic expansion valve are connected through pipelines, the heat recovery end comprises the heat recoverer, a second compressor, a second heat exchanger, a second electromagnetic expansion valve and a hot water tank, and the heat recoverer, the second compressor, the second heat exchanger and the second electromagnetic expansion valve are connected through pipelines. The second heat exchanger is connected with the hot water tank through a pipeline.

Description

Technical Field

[0001] This utility model relates to the field of energy recovery device technology, specifically to an electrochemical energy storage heat recovery control device. Background Technology

[0002] Currently, considering both efficiency and safety, electrochemical energy storage batteries are considered to operate within a temperature range of -40 to 60°C, with an optimal range of 10 to 35°C. Temperatures that are too low can cause the electrolyte to solidify, increasing impedance, while excessively high temperatures will significantly reduce battery capacity, lifespan, and safety. Furthermore, as temperatures continue to rise, the internal heat of the battery cannot dissipate in time, potentially leading to thermal runaway. Therefore, all energy storage systems require a thermal management system to address battery heat generation issues through active / passive thermal management technologies. Mainstream energy storage temperature control still primarily relies on air cooling and liquid cooling technologies, while thermal management systems are designed solely to ensure normal operation of the energy storage system, without considering comprehensive energy utilization. Waste heat from energy storage systems is often too low to be directly used; regardless of whether the system uses air or liquid cooling, a large portion of the battery heat is not recovered and utilized, resulting in significant heat loss. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides an electrochemical energy storage heat recovery control device, which solves the problem that existing thermal management systems are designed solely based on ensuring the normal operation of energy storage, resulting in a large amount of heat being wasted, and the waste heat from energy storage being too low to be used directly.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides an electrochemical energy storage heat recovery control device, comprising: a battery heat dissipation end, a cooling end, and a heat recovery end. The battery heat dissipation end includes a battery pack, a cold plate, a water pump, and a heat exchanger. The battery pack and the cold plate are connected by bolts. The cold plate, the water pump, and the heat exchanger are connected by pipes. The cooling end includes a heat exchanger, a compressor, a heat recovery unit, a condenser, and an electromagnetic expansion valve. The heat exchanger, compressor, heat recovery unit, condenser, and electromagnetic expansion valve are connected by pipes. The heat recovery end includes a heat recovery unit, a second compressor, a second heat exchanger, a second electromagnetic expansion valve, and a hot water tank. The heat recovery unit, compressor, heat exchanger, and electromagnetic expansion valve are connected by pipes. Temperature sensors are installed at the inlet and outlet of the heat recovery unit. The second heat exchanger is connected to the hot water tank by pipes. The battery pack, water pump, compressor, electromagnetic expansion valve, compressor, electromagnetic expansion valve, temperature sensors, and PLC controller are electrically connected.

[0008] Preferably, the outer sides of the heat exchanger, heat recovery unit, heat exchanger, hot water tank, and pipes are all covered with heat insulation cotton.

[0009] Preferably, a motor speed controller is connected between the water pump, compressor one, compressor two and the PLC controller.

[0010] Preferably, temperature sensors are also installed inside the hot water tank and the battery pack, and the temperature sensors are electrically connected to the PLC controller.

[0011] Preferably, a heater is installed in the connecting pipe between the heat exchanger and the cold plate.

[0012] Preferably, a cooling fan is bolted to the left side of the condenser, and the cooling fan is electrically connected to the PLC controller.

[0013] Preferably, both ends of the pipe are connected by flanges.

[0014] (III) Beneficial Effects

[0015] This invention provides an electrochemical energy storage heat recovery control device, which has at least the following advantages compared with the prior art:

[0016] 1. The electrochemical energy storage heat recovery control device has the heat recovery device connected in series in the cooling circuit of the thermal management system, which does not affect the normal operation of the thermal management system and the thermal management system can play a backup role.

[0017] 2. The heat recovery device comes with a built-in heat pump system, which can achieve precise temperature control of the heat recovery loop and the waste heat utilization loop, avoiding excessive recovery of battery heat and affecting the normal operation of the battery. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an isometric view of the present invention;

[0020] Figure 3 This is a top side view of the present invention;

[0021] Figure 4 This is a rear side view of the present invention.

[0022] In the diagram: 1. Battery heat dissipation end; 2. Cooling end; 3. Heat recovery end; 11. Battery pack; 12. Cold plate; 13. Water pump; 14. Heat exchanger one; 21. Compressor one; 22. Heat recovery unit; 23. Condenser; 24. Electromagnetic expansion valve; 31. Compressor two; 32. Heat exchanger two; 33. Electromagnetic expansion valve two; 34. Hot water tank; 41. Heater; 42. Cooling fan. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This utility model provides a technical solution: an electrochemical energy storage heat recovery control device, comprising: a battery heat dissipation end 1, a cooling end 2, and a heat recovery end 3. The battery heat dissipation end 1 includes a battery pack 11, a cold plate 12, a water pump 13, and a heat exchanger 14. The battery pack 11 and the cold plate 12 are connected by bolts, and the cold plate 12, the water pump 13, and the heat exchanger 14 are connected by pipes. The cooling end 2 includes a heat exchanger 14, a compressor 21, a heat recovery unit 22, a condenser 23, and an electromagnetic expansion valve 24. The expansion valves 24 are connected by pipes. The heat recovery end 3 includes a heat recovery unit 22, a second compressor 31, a second heat exchanger 32, a second electromagnetic expansion valve 33, and a hot water tank 34. The heat recovery unit 22, the second compressor 31, the second heat exchanger 32, and the second electromagnetic expansion valve 33 are connected by pipes. Temperature sensors are installed at the inlet and outlet of the heat recovery unit 22. The second heat exchanger 32 and the hot water tank 34 are connected by pipes. The battery pack 11, the water pump 13, the first compressor 21, the electromagnetic expansion valve 24, the second compressor 31, the second electromagnetic expansion valve 33, the temperature sensors, and the PLC controller are electrically connected.

[0025] During use, the desired temperature is set in the temperature control system. Water pump 13 pushes the coolant inside the battery heat dissipation end 1 pipe. Cold plate 12 absorbs heat from the battery pack 11, which is then transferred to the pipe via internal heat sinks and copper pipes. The coolant temperature inside the pipe rises and is transferred by water pump 13 to heat exchanger 14, where the heat is dissipated. The coolant then enters again through the inlet of cold plate 12, absorbing heat from the cold plate 12 and thus the battery pack 11. After the heat is transferred to heat exchanger 14, it dissipates and is absorbed by the refrigerant in cooling end 2. The refrigerant becomes a high-temperature, low-pressure gaseous state, which is then compressed by compressor 21, becoming a high-temperature, high-pressure gaseous state. It then enters heat recovery unit 22, where heat is absorbed, converting it into a low-temperature gas-liquid mixture. This mixture then enters the condenser 23 for further cooling, and the temperature is further reduced. Finally, it passes through electromagnetic expansion valve 24 and becomes a low-temperature gaseous mixture. The low-temperature, low-pressure liquid returns to heat exchanger 14 to absorb heat from the coolant. After absorbing heat, the refrigerant in the right-side pipe of heat recovery unit 22 is absorbed and converted into a high-temperature, low-pressure gas. After being pressurized by compressor 21, it becomes a high-temperature, high-pressure gas and enters the left side of heat exchanger 22 for heat dissipation, converting into a low-temperature, high-pressure gas-liquid mixture. Then, it enters electromagnetic expansion valve 23 and becomes a low-temperature, low-pressure liquid, entering heat recovery unit 22 for cooling. As the heat in heat exchanger 22 increases, the temperature of the refrigerant inside heat exchanger 22 rises. It then enters the pipe inside hot water tank 34 to heat and store the water inside. After being discharged through the pipe, it re-enters heat exchanger 22 for further heating. Temperature sensors detect and control the temperature at the location of heat recovery unit 22.

[0026] like Figure 1-4 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the heat exchanger 14, heat recovery unit 22, heat exchanger 32, hot water tank 34 and the outside of the pipe are all covered with heat insulation cotton.

[0027] Analysis of the above structure shows that heat exchanger 14, heat recovery unit 22, heat exchanger 22, hot water tank 34 and the outside of the pipes are insulated with heat insulation cotton, which can effectively reduce the influence of the outside on the internal heat.

[0028] like Figure 1-4 As shown in the figure, this utility model embodiment provides an implementation method. Based on the above implementation method, a motor speed controller is connected between the water pump 13, compressor 1 21, compressor 2 31 and the PLC controller.

[0029] Analysis of the above structure shows that the speed of water pump 13, compressor 1 21, and compressor 2 31 can be controlled by the motor speed controller, thereby controlling the flow rate and temperature.

[0030] like Figure 1-4 As shown in the figure, this utility model embodiment provides an implementation method. Based on the above implementation method, a temperature sensor is also installed inside the hot water tank 34 and the battery pack 11, and the temperature sensor is electrically connected to the PLC controller.

[0031] Analysis of the above structure shows that temperature sensors are installed inside the hot water tank 34 and the battery pack 11, which transmit the temperature information of these two locations in real time. When the temperature of the battery pack 1 and the temperature of the hot water tank 34 exceed the required temperature, adjustments will be made.

[0032] like Figure 1-4 As shown, this utility model embodiment provides an implementation method in which a heater 41 is installed in the connecting pipe between the heat exchanger 14 and the cold plate 12.

[0033] Analysis of the above structure shows that when the temperature of the battery pack 11 is too low, the heater 41 can be activated for timely adjustment.

[0034] like Figure 1-4 As shown in the figure, this utility model embodiment provides an implementation method. Based on the above implementation method, a cooling fan 42 is installed on the left side of the condenser 23 by bolts, and the cooling fan 42 is electrically connected to the PLC controller.

[0035] Analysis of the above structure shows that when the cooling fan 42 is turned on, it blows air onto the heat sink of the condenser 23, helping to cool the refrigerant inside the condenser 23.

[0036] like Figure 1-4 As shown, this utility model embodiment provides an implementation method in which both ends of the pipeline are connected by flanges.

[0037] Analysis of the above structure shows that both ends of the pipe are connected by flanges, which can ensure the strength of the connection.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrochemical energy storage heat recovery control device, characterized by, Include: The battery heat dissipation end (1), refrigeration end (2) and heat recovery end (3), the battery heat dissipation end (1) includes battery pack (11), cold plate (12), water pump (13), heat exchanger one (14), the battery pack (11) and cold plate (12) are connected by bolt, the cold plate (12), water pump (13), heat exchanger one (14) are connected by pipeline, the refrigeration end (2) includes heat exchanger one (14), compressor one (21), heat recovery (22), condenser (23), electromagnetic expansion valve (24), heat exchanger one (14), compressor one (21), heat recovery (22), condenser (23), electromagnetic expansion valve (24) are connected by pipeline, the heat recovery end (3) includes heat recovery (22), compressor two (31), heat exchanger two (32), electromagnetic expansion valve two (33), hot water tank (34), heat recovery (22), compressor two (31), heat exchanger two (32), electromagnetic expansion valve two (33) are connected by pipeline, the inlet and outlet of heat recovery (22) are provided with temperature sensor, heat exchanger two (32) and hot water tank (34) are connected by pipeline, the battery pack (11), water pump (13), compressor one (21), electromagnetic expansion valve (24), compressor two (31), electromagnetic expansion valve two (33), temperature sensor and PLC controller are electrically connected.

2. An electrochemical energy storage heat recovery control device according to claim 1, wherein: The heat exchanger one (14), heat recovery (22), heat exchanger two (32), hot water tank (34) and the outer side of pipeline are all pasted with temperature insulation cotton.

3. The electrochemical energy storage heat recovery control device of claim 1, wherein: The water pump (13), compressor one (21), compressor two (31) and PLC controller are connected with motor speed regulator.

4. The electrochemical energy storage heat recovery control device of claim 1, wherein: The hot water tank (34) and the inside of battery pack (11) are also provided with temperature sensor, and the temperature sensor and PLC controller are electrically connected.

5. The electrochemical energy storage heat recovery control device of claim 1, wherein: The connecting pipeline between heat exchanger one (14) and cold plate (12) is provided with heater (41).

6. An electrochemical energy storage heat recovery control device according to claim 1, wherein: The left side of condenser (23) is provided with heat dissipation fan (42) through bolt, and the heat dissipation fan (42) and PLC controller are electrically connected.

7. The electrochemical energy storage and heat recovery control device of claim 1, wherein: Both ends of the pipeline are connected by flange plate.

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