A semiconductor refrigeration structure for an electric vehicle battery swap cabinet

Abstract

The utility model discloses a kind of semiconductor refrigeration structures for electric vehicle battery replacement cabinet, including shell, the top of the shell is equipped with control cabinet, the inside of the shell is evenly equipped with multiple battery compartment for placing battery;The inside rear end of the battery compartment is equipped with cold plate, TEC module is installed on the cold plate, the rear end of the battery compartment is equipped with heat conduction plate covering TEC module, adopt TEC module to combine aluminium alloy cold plate, pass through cold end and directly conduct cold quantity in battery compartment, cooperate with the efficient heat dissipation combination of hot end heat conduction plate, radiating fin and radiating fan, the problem of insufficient temperature control of traditional natural ventilation or air cooling under high temperature environment is solved, battery compartment temperature can be quickly stabilized in safety range, effectively reduce the aging acceleration and thermal runaway risk of lithium battery due to high temperature, each battery compartment is independent cavity, only when battery is detected to be put in, corresponding TEC module is started, no battery is kept closed, avoid invalid energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of battery swapping cabinet technology, specifically a semiconductor cooling structure for electric vehicle battery swapping cabinets. Background Technology

[0002] Most existing battery swapping cabinets use natural ventilation or air cooling for temperature regulation, but these methods are ineffective in reducing battery compartment temperature under high temperatures or in sealed environments, leading to accelerated lithium battery aging and increased risk of thermal runaway. While some high-end systems use compressor cooling, they suffer from high cost, large size, and difficult maintenance. In recent years, semiconductor thermoelectric cooling technology (Peltier modules) has become a new trend in temperature control for battery swapping equipment due to its compact structure, high temperature control accuracy, refrigerant-free operation, and low noise.

[0003] However, existing products lack optimized design schemes that integrate thermoelectric cooling with structural integration specifically for multi-compartment battery swapping structures. This invention provides a technical solution to address these issues. Therefore, a semiconductor cooling structure for electric vehicle battery swapping cabinets is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a semiconductor cooling structure for electric vehicle battery swapping cabinets to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a semiconductor cooling structure for an electric vehicle battery swapping cabinet, comprising a housing, a control cabinet mounted on the top of the housing, and multiple battery compartments for placing batteries evenly installed inside the housing;

[0006] The rear end of the battery compartment is equipped with a cooling plate, on which a TEC module is mounted. The rear end of the battery compartment is also equipped with a heat-conducting plate covering the TEC module. The heat-conducting plate is uniformly provided with heat dissipation fins and is equipped with a cooling fan.

[0007] Preferably, the cold end of the TEC module is in contact with the cold-conducting plate, and the cold-conducting plate is made of aluminum alloy plate.

[0008] Preferably, the hot end of the TEC module is in contact with the heat-conducting plate.

[0009] Preferably, a temperature sensor is installed inside the battery compartment. The temperature sensor is of model DSB and is electrically connected to the control cabinet.

[0010] Preferably, a power adapter is installed on the outside of the battery compartment.

[0011] Preferably, a plurality of doors are evenly installed on the front surface of the housing, and an inspection door is installed on the rear surface of the housing.

[0012] Preferably, the top of the access door or the outer casing is provided with an air duct for heat dissipation.

[0013] Preferably, the inner wall of the battery compartment is provided with a heat insulation layer, which is composed of polyurethane foam material and a reflective heat insulation film.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by using a TEC module combined with an aluminum alloy cold-conducting plate, the cold end directly conducts cold energy into the battery compartment. Combined with the high-efficiency heat dissipation combination of the hot end heat-conducting plate, heat dissipation fins and cooling fan, it solves the problem of insufficient temperature control in high-temperature environments caused by traditional natural ventilation or air cooling. It can quickly stabilize the battery compartment temperature within a safe range, effectively reducing the risk of accelerated aging and thermal runaway of lithium batteries caused by high temperatures. Each battery compartment is an independent cavity, and the corresponding TEC module is activated only when a battery is detected to be inserted. It remains closed when there is no battery, avoiding unnecessary energy consumption. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the battery compartment of this utility model;

[0018] Figure 4 This is an exploded view of the battery compartment structure of this utility model.

[0019] In the diagram: 1. Outer casing; 2. Battery compartment; 3. Door; 4. Inspection door; 5. Power adapter; 6. Heat dissipation fins; 7. Cooling fan; 8. Cooling plate; 9. TEC module; 10. Heat dissipation plate; 12. Control cabinet. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a semiconductor cooling structure for a battery swapping cabinet for electric vehicles, including a shell 1, which is a rectangular hollow structure, with a control cabinet 12 fixedly installed on its top by bolts. The control cabinet 12 integrates a control motherboard and a power supply module. Multiple battery compartments 2 for placing batteries are evenly spaced along the horizontal direction inside the shell 1. Each battery compartment 2 is an independent cavity and is fixedly connected to the inner wall of the shell 1 by bolts.

[0022] A cooling plate 8 is vertically mounted at the rear end of the battery compartment 2. At least one TEC module 9 is fixedly installed on the side of the cooling plate 8 facing away from the battery. The TEC module 9 controls the current via PWM and supports dynamic cooling intensity adjustment. A heat-conducting plate 10 is fixedly installed on the outer wall of the rear end of the battery compartment 2. Multiple heat dissipation fins 6 are vertically and evenly arranged on the side of the heat-conducting plate 10 facing away from the TEC module 9. The heat dissipation fins 6 are arranged parallel to each other along the length of the heat-conducting plate 10, with a spacing of 5-10 mm between adjacent heat dissipation fins 6. At least one cooling fan 7 is also fixedly mounted on the heat-conducting plate 10 on one side of the heat dissipation fins 6 via a bracket. The air outlet direction of the cooling fan 7 is directly facing the heat dissipation fins 6.

[0023] The cold end of the TEC module 9 is in complete contact with the surface of the cooling plate 8 on the side away from the battery. The cooling plate 8 is made of aluminum alloy.

[0024] The hot end of the TEC module 9 is also tightly bonded to the surface of the heat-conducting plate 10 near the battery compartment 2 via thermal grease, and the bonding area between the hot end and the heat-conducting plate 10 is not less than 95% of the total area of ​​the hot end of the TEC module 9.

[0025] At least one temperature sensor, model DS18B20, is fixedly installed on the inner side wall of the battery compartment 2. Its detection end faces the battery placement area. The temperature sensor is electrically connected to the control main board in the control cabinet 12 through a shielded wire. The wire is arranged along the reserved wire groove on the inner wall of the battery compartment 2.

[0026] A power adapter 5 is fixedly installed in the middle of the outer side wall of the battery compartment 2 by a clip or screw. The input end of the power adapter 5 is connected to an external power supply line through a wire, and the output end extends into the battery compartment 2 through a wire and is equipped with a charging interface that matches the battery.

[0027] Multiple doors 3 are evenly installed on the front surface of the outer casing 1, corresponding to each battery compartment 2. The doors 3 are made of metal, with one side hinged to the outer casing 1 and the other side equipped with a lock. An inspection door 4 is installed on the rear surface of the outer casing 1, corresponding to the position of the heat conduction plate 10 and the heat dissipation fins 6.

[0028] An air duct for heat dissipation is provided in the middle of the inspection door 4 or the top of the outer shell 1. The air duct has a grille structure and a removable dustproof net is provided inside the air duct.

[0029] The inner wall of the battery compartment 2 is provided with an insulation layer with a total thickness of 10-20mm. The insulation layer consists of an inner layer of polyurethane foam material and an outer layer of reflective heat insulation film. The reflective heat insulation film is tightly bonded to the surface of the polyurethane foam material with an adhesive.

[0030] Working principle: After the battery is placed in the battery compartment, the charging head control cabinet 12 detects the battery placement and connects. The control logic is set to activate the corresponding TEC module only when the battery is detected in the compartment; otherwise, it remains off to save energy. The control cabinet 12 initiates the cooling process: The DS18B20 temperature sensor inside the battery compartment monitors the temperature in real time. The cold end of the TEC module 9 quickly generates cooling, which is then evenly transferred to the inside of the battery compartment 2 through the aluminum alloy cooling plate 8 that is tightly attached to the cold end, directly reducing the ambient temperature around the battery.

[0031] Simultaneously, the heat generated at the hot end of the TEC module 9 is rapidly conducted to the heat dissipation fins 6 through the attached heat-conducting plate 10. The control cabinet 12 simultaneously starts the cooling fan 7, which blows air onto the heat dissipation fins 6 to accelerate airflow and remove heat from the surface of the heat dissipation fins 6. The heat is discharged to the outside of the battery swapping cabinet through the inspection door 4 or the grille-type air duct on the top of the outer casing 1. The dustproof net inside the air duct prevents external dust from entering the equipment.

[0032] The insulation layer on the inner wall of battery compartment 2 effectively reduces the loss of cold air from the compartment to the outside, while blocking the intrusion of heat from the external environment, thus improving cooling efficiency. When the temperature sensor detects that the temperature inside the compartment has dropped to the set safe range, the control cabinet will automatically shut down the TEC module 9 and the cooling fan 7 to achieve on-demand cooling and reduce energy consumption.

[0033] 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 semiconductor cooling structure for an electric vehicle battery swapping cabinet, comprising a housing (1), characterized in that: A control cabinet (12) is installed on the top of the outer casing (1), and multiple battery compartments (2) for placing batteries are evenly installed inside the outer casing (1). The battery compartment (2) has a cooling plate (8) at its rear end, a TEC module (9) is installed on the cooling plate (8), a heat-conducting plate (10) covering the TEC module (9) is installed at the rear end of the battery compartment (2), heat dissipation fins (6) are evenly distributed on the heat-conducting plate (10), and a cooling fan (7) is installed on the heat-conducting plate (10).

2. The semiconductor cooling structure for an electric vehicle battery swapping cabinet according to claim 1, characterized in that: The cold end of the TEC module (9) is in contact with the cold guide plate (8), which is made of aluminum alloy plate.

3. The semiconductor cooling structure for an electric vehicle battery swapping cabinet according to claim 2, characterized in that: The hot end of the TEC module (9) is in contact with the heat-conducting plate (10).

4. The semiconductor cooling structure for an electric vehicle battery swapping cabinet according to claim 1, characterized in that: A temperature sensor is installed inside the battery compartment (2). The temperature sensor is a DS18B20 and is electrically connected to the control cabinet (12).

5. A semiconductor cooling structure for an electric vehicle battery swapping cabinet according to claim 1, characterized in that: A power adapter (5) is installed on the outside of the battery compartment (2).

6. The semiconductor cooling structure for an electric vehicle battery swapping cabinet according to claim 1, characterized in that: Multiple doors (3) are evenly installed on the front surface of the outer shell (1), and an inspection door (4) is installed on the rear surface of the outer shell (1).

7. A semiconductor cooling structure for an electric vehicle battery swapping cabinet according to claim 6, characterized in that: The top of the inspection door (4) or the outer casing (1) is provided with an air duct for heat dissipation.

8. A semiconductor cooling structure for an electric vehicle battery swapping cabinet according to claim 1, characterized in that: The inner wall of the battery compartment (2) is provided with a heat insulation layer, which is composed of polyurethane foam material and reflective heat insulation film.

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