CN221960185U - Positive pressure explosion-proof cabinet used in new energy power battery test environment cabin - Google Patents

Abstract

The utility model discloses a positive pressure explosion-proof cabinet for a new energy power battery testing environment cabin, which relates to the technical field of explosion-proof cabinets and comprises a cabinet body, wherein a sealing door is arranged in front of the cabinet body, a manual air valve and an air inlet pipe are arranged on the left side and the right side of the top of the cabinet body, a signal cable sealing element is arranged behind the manual air valve, a cable gram head is arranged behind the air inlet pipe, a circulating cooling pipeline and a liquid collecting tank are arranged at the bottom of the cabinet body, a quick connector is distributed above the inside of the cabinet body in the circulating cooling pipeline, and a steel grid is distributed in the middle of the cabinet body. The utility model discloses be convenient for install and maintain, can not form explosion environment, equipment and part safety in the effective protection cabinet, through filling the gas in the cabinet, make in the cabinet with the cabinet outside shape pressure differential to it is internal to have prevented that flammable dangerous gas, dust etc. get into the malleation cabinet, can cool down the cooling for the internal equipment of cabinet, thereby reach the explosion-proof purpose of electrical apparatus, protect internal equipment and part effectively, the size of the cabinet body can increase or reduce along with the equipment component size of inside.

Description

A positive pressure explosion-proof cabinet for new energy power battery test environment chamber

Technical Field

The utility model relates to the technical field of explosion-proof cabinets, in particular to a positive pressure explosion-proof cabinet used in a new energy power battery test environment cabin.

Background Art

Before leaving the factory, the power batteries of new energy vehicles must be tested in the test environment chamber set up inside the factory. The main test items are: safety performance, including overcharging, over-discharging, short circuit, extrusion, acupuncture, heavy object impact, falling, thermal abuse, low pressure, seawater immersion, washing, external fire, etc. The tested battery may be damaged inside, and dangerous conditions may occur, such as electrolyte leakage, fire, deflagration, etc., and some toxic gases or harmful dust will be generated at the same time. For example, the authorized patent CN201920789449.9 is a test safety cabinet, which performs explosion-proof treatment on battery testing to ensure a certain degree of safety, and the environmental chamber needs to be equipped with various related equipment. The electrical components inside the equipment will generate sparks and the temperature will rise or even reach a dangerous temperature during normal operation. Once they meet the explosive gas mixture on site, it will cause an explosion or a short circuit, which will not only easily damage the equipment but also directly endanger the user's property and life safety. To this end, we have developed a positive pressure explosion-proof cabinet that is economical, easy to install and maintain, does not form an explosive environment, and effectively protects the safety of equipment and parts in the cabinet. It is suitable for use in the environmental chamber of the power battery test of new energy vehicles, and effectively protects the equipment and parts in the cabinet.

Utility Model Content

The purpose of the utility model is to provide a positive pressure explosion-proof cabinet for use in a new energy power battery test environment chamber to solve the problems raised in the above-mentioned background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positive pressure explosion-proof cabinet used in a new energy power battery test environment chamber, comprising a cabinet body, a sealed door is provided in the front of the cabinet body, manual air valves and air inlet pipes are provided on the left and right sides of the top of the cabinet body, a signal cable seal is provided behind the manual air valve, a cable gland is provided behind the air inlet pipe, a circulating cooling pipe and a liquid collecting tank are provided at the bottom of the cabinet body, the circulating cooling pipe is located inside the cabinet body and is provided with quick connectors on the upper part, and a steel grille is distributed in the middle of the cabinet body.

Furthermore: the cabinet body is bolted and fixed with sealing plates on five sides, a lighting lamp and a low-voltage power supply are arranged on the top of the cabinet body, and a switch is arranged on the rear of the cabinet body, and the switch, the lighting lamp and the low-voltage power supply are electrically connected.

Further: the sealed door is divided into a single-opening door and a double-opening door, which are connected to the cabinet body through hinges, and an observation window is provided above the sealed door.

Preferably, a drain valve is connected to the left side of the liquid collecting tank.

Preferably, the circulating cooling pipeline is divided into a water inlet pipe and a water outlet pipe, and the outside of the pipeline is connected to the water supply equipment through a flange.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a positive pressure explosion-proof cabinet which is economical, easy to install and maintain, cannot form an explosive environment, effectively protects the safety of equipment and parts in the cabinet, and is suitable for use in flammable and explosive new energy battery environment cabins. By filling the cabinet with air (low cost) or nitrogen under necessary conditions, a pressure difference is formed between the inside and outside of the cabinet, thereby preventing flammable and dangerous gases, dust, etc. from entering the positive pressure cabinet. At the same time, the circulating air supply takes away the heat in the cabinet and cools the equipment in the cabinet, thereby achieving the purpose of electrical explosion-proof and effectively protecting the equipment and parts in the cabinet. The size of the cabinet can be increased or reduced with the size of the internal equipment components.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

Figure 2 is a front view of the utility model;

Fig. 3 is a top view of the utility model;

Fig. 4 is a schematic cross-sectional view of A-A;

Fig. 5 is a schematic cross-sectional view at B-B;

FIG. 6 is a schematic diagram of the rear side of the utility model without a cover.

In the figure: 1. cabinet, 2. sealed door, 3. cover plate, 4. manual air valve, 5. signal cable seal, 6. cable gland, 7. air inlet pipe, 8. circulating cooling pipe, 9. drain valve, 10. liquid collecting tank, 11. quick connector, 12. switch, 13. steel grille, 14. lighting, 15. low-voltage power supply, 16. electronic control equipment.

DETAILED DESCRIPTION

The present invention will be described below based on the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. However, it is worth noting that the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. However, for the parts that are not described in detail, those skilled in the art can also fully understand the present invention.

In addition, those skilled in the art should understand that the drawings are only provided to illustrate the purpose, features and advantages of the present invention, and the drawings are not actually drawn according to scale.

At the same time, unless the context clearly requires otherwise, the words "include", "comprises" and similar words throughout the specification and claims should be interpreted as inclusive rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

Please refer to Figures 1 to 6. The utility model provides a technical solution: it includes a cabinet 1, a sealed door 2 is provided in the front of the cabinet 1, manual air valves 4 and air inlet pipes 7 are provided on the left and right sides of the top of the cabinet 1, a signal cable seal 5 is provided behind the manual air valve 4, a cable gland 6 is provided behind the air inlet pipe 7, a circulating cooling pipe 8 and a liquid collecting tank 10 are provided at the bottom of the cabinet 1, the circulating cooling pipe 8 is located on the upper part of the interior of the cabinet 1, and a quick connector 11 is distributed, and a steel grille 13 is distributed in the middle of the cabinet 1.

The steel structure cabinet 1 is bolted on five sides with sealing plates 3, and each joint surface has undergone special sealing treatment. It is equipped with a sealing door 2, which is divided into a single door and a double door and has an observation window on the top. The sealing door 2 and the cabinet 1 form a closed structure; the entire surface of the cabinet 1 is electrostatically sprayed with powder after high-speed shot blasting, and has a beautiful appearance; a liquid collecting tank 10 is installed at the bottom of the cabinet to collect leaked liquid, and it is discharged into a designated container through a side drain valve 9. A steel grille 13 for placing equipment is installed in the middle layer of the cabinet 1, and quick connectors 11 of various pipe diameters are arranged in the interval gap for the equipment to connect external cooling water. The bottom of the quick connector 11 is installed on the circulating cooling pipe 8, and a DC 24V is installed on the top of the cabinet. A 24W lighting lamp 14 is provided with a 24V/100W low-voltage power supply 15 and a switch 12. A signal cable seal 5 is provided on the left side of the top of the cabinet 1, and a cable gland 6 is provided on the right side to reduce the gap at the entrance of the cables. A manual air valve 4 is provided at the air inlet on the top of the cabinet 1 to facilitate control of the air intake speed and adjust the pressure inside the cabinet 1 to ensure that the cabinet 1 is in the required positive pressure state. An air inlet duct 7 is provided on the right side of the cabinet 1.

Place the cabinet 1 at the designated position, connect the external ventilation pipeline to the air inlet pipe 7 of the cabinet 1, and open the manual air valve 4. Since the cabinet 1 is sealed, the cabinet 1 is in a positive pressure state (the pressure inside the cabinet is greater than the pressure outside the cabinet), thereby forming a safe micro-positive pressure environment, preventing external flammable and dangerous gases, dust, etc. from entering the positive pressure cabinet 1, ensuring the safe operation of the built-in electronic control equipment 16 and electrical components, etc. The electronic control equipment 16 is placed on the steel grille 13, and can be connected to the quick connector 11 according to the needs of different equipment to facilitate the connection of the equipment to external cooling water. When the equipment is running, the operation of the equipment in the cabinet 1 can be observed at any time through the observation window on the single door or double door on the front side, which is also convenient for the maintenance of the internal equipment. The liquid collecting tank 10 is installed at the bottom of the cabinet to facilitate the collection and cleaning of the leaked liquid, and it is discharged into the designated container through the side drain valve 9 to prevent the accidental overflow of the chemical liquid.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. A positive pressure explosion-proof cabinet for use in a new energy power battery test environment chamber, characterized in that it comprises a cabinet body (1), a sealed door (2) is provided in front of the cabinet body (1), manual air valves (4) and air inlet pipes (7) are provided on the left and right sides of the top of the cabinet body (1), a signal cable seal (5) is provided behind the manual air valve (4), a cable gland (6) is provided behind the air inlet pipe (7), a circulating cooling pipe (8) and a liquid collecting tank (10) are provided at the bottom of the cabinet body (1), a quick connector (11) is distributed above the circulating cooling pipe (8) located inside the cabinet body (1), and a steel grille (13) is distributed in the middle of the cabinet body (1). 2. A positive pressure explosion-proof cabinet for use in a new energy power battery test environment cabin according to claim 1, characterized in that: the cabinet body (1) is bolted and fixed with sealing plates (3) on five sides, a lighting lamp (14) and a low-voltage power supply (15) are provided above the cabinet body (1), and a switch (12) is provided at the rear of the cabinet body (1), and the switch (12), the lighting lamp (14) and the low-voltage power supply (15) are electrically connected. 3. A positive pressure explosion-proof cabinet for use in a new energy power battery test environment chamber according to claim 1, characterized in that: the sealed door (2) is divided into a single door and a double door and is connected to the cabinet body (1) by a hinge, and an observation window is provided above the sealed door (2). 4. A positive pressure explosion-proof cabinet for use in a new energy power battery test environment chamber according to claim 1, characterized in that a drain valve (9) is connected to the left side of the liquid collecting tank (10). 5. A positive pressure explosion-proof cabinet for use in a new energy power battery test environment chamber according to claim 1, characterized in that: the circulating cooling pipe (8) is divided into a water inlet pipe and a water outlet pipe, and the outside of the pipe is connected to the water supply equipment through a flange.