Multifunctional energy storage temperature control system

Abstract

The utility model discloses a multifunctional energy storage temperature control system which is composed of a compressor, an air cooling heat exchanger, a throttling device, a liquid side heat exchanger, a water pump, a heating device and a heat regenerator, two water outlet temperatures can be achieved through the system, after PCS is cooled through the system, one-time heat regeneration supercooling is achieved in the heat regenerator, the battery cooling effect is enhanced, and the energy storage efficiency is improved. PCS high-temperature cooling can be achieved, battery low-temperature cooling can also be achieved, and complexity caused by two systems is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage temperature control, in particular to a multifunctional energy storage temperature control system. Background Art

[0002] Since lithium batteries have strict requirements on operating temperature, the electrochemical energy storage temperature control system can play an important role. At the same time, PCS also has temperature control requirements. Since the temperature control requirements of PCS are different from those of batteries, such as PCS can generally work at 35°C, while batteries generally operate at 15-35°C, with an optimal temperature of 25°C, different temperature control requirements are caused. If a low water supply temperature is used, PCS is prone to condensation. If a high water outlet temperature is used, the battery cannot be guaranteed. The traditional liquid cooling unit uses two sets of equipment, resulting in system waste. In order to avoid the defects of this solution, the utility model designs a multifunctional temperature control system that can have different water outlet temperatures, which can meet both PCS temperature control and battery temperature control, and the system is simple.

[0003] Therefore, how to provide a multifunctional energy storage temperature control system to solve the problems existing in the prior art is of great significance to its application. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a multifunctional energy storage temperature control system to solve the problem that traditional liquid cooling units use two sets of equipment, resulting in system waste.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A multifunctional energy storage temperature control system comprises a compressor, an air-cooled heat exchanger, a throttling device, a liquid-side heat exchanger, a water pump, a heating device, a regenerator and a heat recovery coil.

[0007] The throttling device includes a battery throttling device and a PCS throttling device, the liquid side heat exchanger includes a battery heat exchanger and a PCS heat exchanger, and the water pump includes a battery water pump and a PCS water pump.

[0008] The compressor exhaust port is connected to the air-cooled heat exchanger inlet, the air-cooled heat exchanger outlet is connected to the PCS throttling device inlet, the PCS throttling device outlet is connected to the PCS heat exchanger refrigerant channel inlet, and the PCS heat exchanger refrigerant channel outlet is connected to the regenerator inlet.

[0009] The outlet of the regenerator is connected to the inlet of the battery throttling device, the outlet of the battery throttling device is connected to the inlet of the refrigerant channel of the battery heat exchanger, the outlet of the refrigerant channel of the battery heat exchanger is connected to the inlet of the heat recovery coil in the regenerator, and the outlet of the heat recovery coil is connected to the suction port of the compressor.

[0010] Preferably, the battery water pump outlet is connected to the inlet of the battery heat exchanger coolant channel, the outlet of the battery heat exchanger coolant channel is connected to the heating device, and the outlet of the heating device is connected to the battery PACK.

[0011] Preferably, the PCS water pump outlet is connected to the inlet of the PCS heat exchanger coolant channel, and the outlet of the battery heat exchanger coolant channel is connected to the PCS.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model integrates dual evaporation temperature refrigeration and heating, and well solves the temperature control of PCS and battery in electrochemical energy storage system, realizes energy-saving, safe and reliable electrochemical energy storage, and has a simple system.

[0014] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0015] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 It is a schematic diagram of the utility model.

[0018] In the figure: 1. compressor; 2. air-cooled heat exchanger; 3. throttling device; 4. liquid-side heat exchanger; 5. water pump; 6. heating device; 7. regenerator; 8. heat recovery coil. DETAILED DESCRIPTION

[0019] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0020] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0021] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0022] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0023] See also Figure 1 , the utility model provides a technical solution for a multifunctional energy storage temperature control system:

[0024] The system includes a compressor 1, an air-cooled heat exchanger 2, a throttling device 3, a liquid-side heat exchanger 4, a water pump 5, a heating device 6, a regenerator 7 and a regenerator coil 8;

[0025] The throttling device 3 includes a battery throttling device 3A and a PCS throttling device 3B, the liquid side heat exchanger 4 includes a battery heat exchanger 4A and a PCS heat exchanger 4B, and the water pump 5 includes a battery water pump 5A and a PCS water pump 5B;

[0026] The exhaust port of the compressor 1 is connected to the inlet of the air-cooled heat exchanger 2, the outlet of the air-cooled heat exchanger 2 is connected to the inlet of the PCS throttling device 3B, the outlet of the PCS throttling device 3B is connected to the inlet of the refrigerant channel of the PCS heat exchanger 4B, and the outlet of the refrigerant channel of the PCS heat exchanger 4B is connected to the inlet of the regenerator 7;

[0027] The outlet of the regenerator 7 is connected to the inlet of the battery throttling device 3A, the outlet of the battery throttling device 3A is connected to the inlet of the refrigerant channel of the battery heat exchanger 4A, the outlet of the refrigerant channel of the battery heat exchanger 4A is connected to the inlet of the heat recovery coil 8 in the regenerator 7, and the outlet of the heat recovery coil 8 is connected to the suction port of the compressor 1.

[0028] The outlet of the battery water pump 5A is connected to the inlet of the coolant channel of the battery heat exchanger 4A, the outlet of the coolant channel of the battery heat exchanger 4A is connected to the heating device 6, and the outlet of the heating device 6 is connected to the battery PACK.

[0029] The outlet of the PCS water pump 5B is connected to the inlet of the coolant passage of the PCS heat exchanger 4B, and the outlet of the coolant passage of the battery heat exchanger 4A is connected to the PCS.

[0030] The utility model can run different working modes:

[0031] (1) When the electrochemical energy storage is being charged or discharged and the humidity is normal, select the PCS cooling + battery cooling mode. The specific operation steps are as follows:

[0032] The compressor 1 is turned on, the battery water pump 5A is turned on, the heating device 6 is not working, the battery throttling device 3A is turned on, and the PCS throttling device 3B is turned on. At this time, the compressor 1 enters the air-cooled heat exchanger 2 after compression and exhausts, and condenses and dissipates heat. After appropriate throttling by the PCS throttling device 3B, 35°C high-temperature cold water is provided to the PCS. The PCS water pump 5B is turned on to transport high-temperature cold water into the PCS coolant channel to achieve PCS cooling. The coolant itself is heated and returns to the PCS heat exchanger 4B to transfer heat to the refrigerant, and the cycle continues. Then the refrigerant passes through the regenerator 7 and the heat exchanger 4B. The coil 8 undergoes heat exchange to achieve supercooling, and enters the battery throttling device 3A again to achieve throttling and pressure reduction, providing the battery with 18°C ​​medium-temperature cold water to achieve battery cooling. The battery water pump 5A delivers the coolant to the cooling channel of the battery PACK, absorbs the heat generated by the battery and transfers it to the coolant. The coolant itself rises in temperature and returns to the coolant channel of the battery heat exchanger 4A. The coolant with a higher temperature is cooled by the heat exchange of the battery heat exchanger 4A, and is delivered to the cooling channel of the battery PACK again under the action of the battery water pump 5A for refrigeration. This cycle dissipates heat for the battery.

[0033] (2) When the electrochemical energy storage is in the transition season or the low temperature season in winter, and charging and discharging are required at this time, select the PCS non-cooling + battery heating mode: The specific operation steps are as follows:

[0034] The battery water pump 5A is turned on, the heating device 6 is turned off, the battery throttling device 3A is turned on, and the PCS throttling device 3B is fully opened. No throttling and pressure reduction are performed. The coolant directly passes through the regenerator and enters the battery throttling device 3A. The coolant is throttled and pressure reduced. The coolant with a higher temperature is cooled by the heat exchange of the battery heat exchanger 4A. The battery water pump 5A delivers the coolant to the cooling channel of the battery PACK, absorbs the heat generated by the battery and transfers it to the coolant. The coolant itself is heated up and returns to the coolant channel of the battery heat exchanger 4A. The coolant is then delivered to the cooling channel of the battery PACK again by the action of the battery water pump 5A for cooling. This cycle dissipates heat for the battery.

[0035] (3) When the electrochemical energy storage is in the low temperature season in winter and is not working in the charge and discharge mode but only in the standby state, select the PCS non-cooling + battery heating mode. The specific operation steps of the PCS non-cooling + battery heating mode are as follows:

[0036] The compressor 1 is turned off, and the heating device 6 starts working. At the same time, the battery water pump 5A also works, the battery throttling device 3A is turned off, and the PCS throttling device 3B is turned off. The coolant with a higher temperature is transported to the cooling channel of the battery PACK through the battery water pump 5A for heating. The cooled coolant is further heated and heated by the heating device 6, and then transported to the cooling channel of the battery PACK for heating again. This cycle heats the battery.

[0037] The above description is only the preferred embodiment of the utility model, which does not limit the protection scope of the utility model. For those skilled in the art, the utility model can be modified and varied in various ways. Any changes, modifications, substitutions, integrations and parameter changes to these embodiments within the spirit and principle of the utility model through conventional substitutions or capable of achieving the same functions without departing from the principles and spirit of the utility model shall fall within the protection scope of the utility model.

Claims

1. A multifunctional energy storage temperature control system, characterized in that: The system comprises a compressor (1), an air-cooled heat exchanger (2), a throttling device (3), a liquid-side heat exchanger (4), a water pump (5), a heating device (6), a regenerator (7) and a heat recovery coil (8); The throttling device (3) comprises a battery throttling device (3A) and a PCS throttling device (3B), the liquid side heat exchanger (4) comprises a battery heat exchanger (4A) and a PCS heat exchanger (4B), and the water pump (5) comprises a battery water pump (5A) and a PCS water pump (5B).

2. A multifunctional energy storage temperature control system as claimed in claim 1, characterized in that: The exhaust port of the compressor (1) is connected to the inlet of the air-cooled heat exchanger (2), the outlet of the air-cooled heat exchanger (2) is connected to the inlet of the PCS throttling device (3B), the outlet of the PCS throttling device (3B) is connected to the inlet of the refrigerant channel of the PCS heat exchanger (4B), and the outlet of the refrigerant channel of the PCS heat exchanger (4B) is connected to the inlet of the reheater (7).

3. A multifunctional energy storage temperature control system as claimed in claim 2, characterized in that: The outlet of the regenerator (7) is connected to the inlet of the battery throttling device (3A), the outlet of the battery throttling device (3A) is connected to the inlet of the refrigerant channel of the battery heat exchanger (4A), the outlet of the refrigerant channel of the battery heat exchanger (4A) is connected to the inlet of the regenerator coil (8) in the regenerator (7), and the outlet of the regenerator coil (8) is connected to the air intake of the compressor (1).

4. A multifunctional energy storage temperature control system as claimed in claim 3, characterized in that: The outlet of the battery water pump (5A) is connected to the inlet of the coolant channel of the battery heat exchanger (4A), the outlet of the coolant channel of the battery heat exchanger (4A) is connected to the heating device (6), and the outlet of the heating device (6) is connected to the battery PACK.

5. A multifunctional energy storage temperature control system as claimed in claim 4, characterized in that: The outlet of the PCS water pump (5B) is connected to the inlet of the coolant channel of the PCS heat exchanger (4B), and the outlet of the coolant channel of the battery heat exchanger (4A) is connected to the PCS.

Images