Energy storage system battery charging and discharging system

Abstract

The utility model discloses a kind of energy storage system battery charging and discharging systems, it is related to energy storage station technical field, auxiliary heat radiation assembly: the auxiliary heat radiation assembly includes pedestal, the pedestal is fixedly connected with heat conduction plate, the lower of heat conduction plate is equipped with liquid cavity, the one side of pedestal is equipped with with liquid cavity intercommunication inlet liquid pipe and outlet liquid pipe, inlet liquid pipe is equipped with solenoid valve;Temperature detection component: the temperature detection component includes heat conduction gasket, the inboard of heat conduction gasket is equipped with temperature measurement optical fiber, temperature measurement optical fiber is connected with optical fiber temperature measurement module;Circuit control component: the circuit control component includes relay, the relay is used to control the on-off of battery and charging and discharging circuit;Main control module: the solenoid valve, optical fiber temperature measurement module and relay are connected with main control module.This energy storage system battery charging and discharging system, heat dissipation effect is good, can effectively guarantee the safe operation of battery pack.

Description

Technical Field

[0001] This utility model relates to the field of energy storage station technology, specifically to a battery charging and discharging system for an energy storage system. Background Technology

[0002] In the current field of energy storage power station technology, parallel operation of battery packs is the mainstream solution for improving energy storage capacity and power output. Traditional energy storage power stations generally arrange parallel battery packs in a container and rely on air conditioning systems for air cooling. However, air has a low thermal conductivity as a heat transfer medium, and due to the limited space layout inside the container, it is difficult to form an efficient convection channel, resulting in severe heat accumulation, which greatly reduces heat dissipation efficiency and affects the performance stability and lifespan of the battery packs. At the same time, due to the dense arrangement of battery packs inside the container, when individual batteries experience a sudden temperature rise due to abnormal conditions, it is difficult to cut off the circuit in time, affecting the safe operation of the battery pack.

[0003] Therefore, it is necessary to propose a battery charging and discharging system for energy storage to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved The purpose of this invention is to provide a battery charging and discharging system for an energy storage system to solve the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a battery charging and discharging system for an energy storage system, comprising: Auxiliary heat dissipation assembly: The auxiliary heat dissipation assembly includes a base, on which a heat-conducting plate is fixedly connected. A liquid cavity is provided below the heat-conducting plate. An inlet pipe and an outlet pipe communicating with the liquid cavity are provided on one side of the base. A solenoid valve is provided on the inlet pipe. Temperature detection component: The temperature detection component includes a thermally conductive pad, and a temperature-sensing optical fiber is provided on the inner side of the thermally conductive pad. The temperature-sensing optical fiber is connected to the optical fiber temperature measurement module. Circuit control component: The circuit control component includes a relay, which is used to control the connection and disconnection of the battery and the charging and discharging circuit; Main control module: The solenoid valve, fiber optic temperature measurement module and relay are all connected to the main control module.

[0006] Preferably, a guide plate is fixedly connected inside the liquid cavity.

[0007] Preferably, fins are fixedly connected to the side of the heat-conducting plate near the liquid cavity.

[0008] Preferably, an insulating bracket is fixedly connected to one side of the base, and a first terminal and a second terminal are fixedly connected to the insulating bracket. Both the first terminal and the second terminal are electrically connected to a relay and are controlled by the relay to switch on and off.

[0009] Preferably, the fixed position of the second terminal corresponds to the position of the positive and negative terminals of the battery, and the second terminal includes a metal post that is slidably connected to an insulating bracket, with a return spring sleeved on the outside of the metal post.

[0010] Preferably, the temperature-measuring optical fiber is arranged in an S-shape inside the thermally conductive pad.

[0011] Preferably, the height of the end of the inlet pipe and outlet pipe furthest from the liquid cavity is greater than the height of the liquid cavity.

[0012] Preferably, the thermally conductive pad is fixed to the side of the insulating bracket near the thermally conductive plate.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides a battery charging and discharging system for an energy storage system, which has the following beneficial effects: 1. The battery charging and discharging system of this energy storage system monitors the battery temperature in real time. When the temperature exceeds a preset threshold, it activates auxiliary heat dissipation components for rapid cooling and can disconnect the abnormally heated battery from the circuit. Its excellent heat dissipation effectively ensures the safe operation of the battery pack.

[0014] 2. In the battery charging and discharging system of this energy storage system, when installing the battery, align it with the second terminal and place it on the heat-conducting plate, and push the battery towards the insulating bracket to complete the installation of the battery, thus making the installation more convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the system of this utility model; Figure 2 This is a three-dimensional schematic diagram of the structure of this utility model; Figure 3 This is a partial cross-sectional schematic diagram of the structure of this utility model; Figure 4 This is a three-dimensional schematic diagram of the base of this utility model; Figure 5 This is a cross-sectional schematic diagram of the base of this utility model; Figure 6 This is a cross-sectional schematic diagram of the second terminal of this utility model.

[0016] In the diagram: 1. First terminal; 3. Insulating bracket; 4. Inlet pipe; 5. Outlet pipe; 6. Base; 7. Second terminal; 8. Thermal pad; 9. Fin; 10. Heat-conducting plate; 11. Flow guide plate; 12. Solenoid valve; 13. Temperature-sensing optical fiber; 14. Liquid chamber; 16. Relay; 17. Return spring; 18. Metal column; 19. Fiber optic temperature sensing module. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Please see Figure 1-6 As shown, a battery charging and discharging system for an energy storage system includes an auxiliary heat dissipation component, a temperature detection component, a circuit control component, and a main control module. The auxiliary heat dissipation component includes a base 6, on which a heat-conducting plate 10 is fixedly connected. A liquid chamber 14 is provided below the heat-conducting plate 10. An inlet pipe 4 and an outlet pipe 5 communicating with the liquid chamber 14 are provided on one side of the base 6. A solenoid valve 12 is provided on the inlet pipe 4. The temperature detection component includes a heat-conducting pad 8, on which a temperature-sensing optical fiber 13 is provided inside. The temperature-sensing optical fiber 13 is connected to an optical fiber temperature sensing module 19. The circuit control component includes a relay 16, which is used to control the connection and disconnection of the battery and the charging and discharging circuit. The solenoid valve 12, the optical fiber temperature sensing module 19, and the relay 16 are all connected to the main control module.

[0019] In use, the battery is placed on the heat-conducting plate 10, and the inlet pipe 4 and outlet pipe 5 are connected to the cooling water circulation system. A heat-conducting pad 8 is attached to one side of the battery. During charging and discharging, the heat generated is transferred to the heat-conducting pad 8, and then from the pad to the temperature-sensing optical fiber 13. The optical fiber temperature sensing module 19 monitors the battery temperature based on the Raman scattering principle of the optical fiber 13. The module transmits the monitored data to the main control module. When the battery temperature exceeds a preset threshold, the main control module controls the solenoid valve 12 to open, allowing cooling water to circulate into the liquid chamber 14 through the inlet pipe 4 and outlet pipe 5, cooling the battery in conjunction with the heat-conducting plate 10. When the cooling effect is limited and the battery temperature continues to rise, the main control module controls the relay 16 to cut off the circuit, disconnecting the battery from the charging and discharging line. Preferably, the main control module is connected to a monitoring terminal for timely maintenance and replacement of batteries with abnormal temperatures.

[0020] To improve heat exchange efficiency, a guide plate 11 is fixedly connected inside the liquid cavity 14. The guide plate 11 guides the cooling water, increasing its residence time in the liquid cavity 14 and allowing for more efficient heat exchange with the heat-conducting plate 10. Simultaneously, the guide plate 11 provides auxiliary support to the heat-conducting plate 10, improving its structural strength. Preferably, fins 9 are fixedly connected to the side of the heat-conducting plate 10 closest to the liquid cavity 14. By providing fins 9, the contact area with the cooling water is increased, thereby further improving the heat exchange efficiency.

[0021] In some embodiments, an insulating bracket 3 is fixedly connected to one side of the base 6. Two first terminals 1 and two second terminals 7 are fixedly connected to the insulating bracket 3. The two first terminals 1 and the two second terminals 7 are respectively connected and controlled by a relay 16. When connecting the battery, the positive and negative terminals of the battery are connected to the two second terminals 7 respectively, and the two first terminals 1 are connected to the charging and discharging circuit.

[0022] To facilitate battery replacement, the fixed position of the second terminal 7 corresponds to the positions of the positive and negative terminals of the battery. The second terminal 7 includes a metal post 18 slidably connected to the insulating bracket 3, and a return spring 17 is sleeved on the outside of the metal post 18. When installing the battery, place it on the heat-conducting plate 10, aligning its positive and negative terminals with the second terminal 7, and then push the battery towards the insulating bracket 3. The positive and negative terminals of the battery will then contact the two metal posts 18 respectively, thus completing the electrical connection. Under the action of the return spring 17, the metal posts 18 are made into tight contact with the battery terminals.

[0023] In some embodiments, the thermally conductive pad 8 is fixed to the side of the insulating bracket 3 near the heat-conducting plate 10. By fixing the thermally conductive pad 8 to the insulating bracket 3, the battery can be pushed against the insulating bracket 3 during battery installation, thus bringing the thermally conductive pad 8 into contact with the battery. To ensure effective temperature monitoring and increase the temperature sensing area, the temperature-sensing optical fiber 13 is arranged in an S-shape inside the thermally conductive pad 8.

[0024] To prevent gas accumulation in the liquid chamber 14 from affecting heat exchange, the height of the ends of the inlet pipe 4 and outlet pipe 5 away from the liquid chamber 14 is greater than the height of the liquid chamber 14. Both the inlet pipe 4 and the outlet pipe 5 are connected to the top of one side of the liquid chamber 14.

[0025] 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. A battery charging and discharging system for an energy storage system, characterized in that, include: Auxiliary heat dissipation assembly: The auxiliary heat dissipation assembly includes a base (6), a heat-conducting plate (10) is fixedly connected to the base (6), a liquid cavity (14) is provided below the heat-conducting plate (10), an inlet pipe (4) and an outlet pipe (5) communicating with the liquid cavity (14) are provided on one side of the base (6), and a solenoid valve (12) is provided on the inlet pipe (4). Temperature detection component: The temperature detection component includes a thermal pad (8), and a temperature measuring fiber (13) is provided on the inner side of the thermal pad (8). The temperature measuring fiber (13) is connected to the fiber optic temperature measuring module (19). Circuit control component: The circuit control component includes a relay (16), which is used to control the connection and disconnection of the battery and the charging and discharging line; Main control module: The solenoid valve (12), fiber optic temperature measurement module (19) and relay (16) are all connected to the main control module.

2. The energy storage system battery charging and discharging system according to claim 1, characterized in that: A guide plate (11) is fixedly connected inside the liquid cavity (14).

3. The energy storage system battery charging and discharging system according to claim 1, characterized in that: The heat-conducting plate (10) is fixedly connected to a fin (9) on the side near the liquid cavity (14).

4. The energy storage system battery charging and discharging system according to claim 1, characterized in that: An insulating bracket (3) is fixedly connected to one side of the base (6). A first terminal (1) and a second terminal (7) are fixedly connected to the insulating bracket (3). Both the first terminal (1) and the second terminal (7) are electrically connected to the relay (16) and are controlled by the relay (16) to switch on and off.

5. The energy storage system battery charging and discharging system according to claim 4, characterized in that: The fixed position of the second terminal (7) corresponds to the position of the positive and negative terminals of the battery. The second terminal (7) includes a metal post (18) that is slidably connected to the insulating bracket (3). A return spring (17) is sleeved on the outside of the metal post (18).

6. The energy storage system battery charging and discharging system according to claim 1, characterized in that: The temperature-measuring optical fiber (13) is arranged in an S-shape inside the thermal pad (8).

7. The energy storage system battery charging and discharging system according to claim 1, characterized in that: The height of the end of the inlet pipe (4) and outlet pipe (5) away from the liquid chamber (14) is greater than the height of the liquid chamber (14).

8. The energy storage system battery charging and discharging system according to claim 1, characterized in that: The thermal pad (8) is fixed to the side of the insulating bracket (3) near the thermal plate (10).

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