Nickel-metal hydride storage battery box system

Abstract

The nickel-metal hydride storage battery box system comprises a storage battery box, an electric control box is arranged on one side of the storage battery box, a storage battery trolley is arranged in the storage battery box, idler wheels are arranged on the two sides of the storage battery trolley, a battery pack is arranged on the storage battery trolley, and a cantilever device is arranged in the storage battery box. The cantilever device comprises a main supporting track frame and an auxiliary supporting track frame, the main supporting track frame and the auxiliary supporting track frame are rotationally connected, when the auxiliary supporting track frame is unfolded, the auxiliary supporting track frame serves as a cantilever, the storage battery trolley can be conveniently pulled out, and after the auxiliary supporting track frame is folded, the storage battery trolley can be protected; according to the innovative cantilever device, when maintenance is needed, the unfolded auxiliary supporting track frame can serve as a stable cantilever, whole-course supporting and guiding are provided for drawing and pulling of the storage battery trolley, the storage battery trolley is effectively prevented from overturning or clamping stagnation, and operation is greatly facilitated.

Description

Technical Field

[0001] This invention belongs to the field of rail transit battery technology, specifically relating to a nickel-metal hydride battery box system. Background Technology

[0002] With the rapid development of new energy technologies, nickel-metal hydride batteries are widely used in hybrid vehicles, rail transit, energy storage power stations, and various special equipment due to their high power density, good low-temperature performance, safety, reliability, and environmental friendliness. Typically, these batteries are installed in groups within dedicated battery boxes to form independent power or energy storage units.

[0003] However, existing nickel-metal hydride battery box systems still face many challenges in practical applications: First, to ensure electrical safety, the inside of the battery box usually needs to be coated with insulating varnish to prevent short circuits between the battery and the grounded box. This not only increases the complexity and cost of the manufacturing process, but also poses a risk of insulation failure under long-term use and mechanical wear. Second, for ease of maintenance and replacement, the batteries are usually mounted on a trolley, but existing trolleys lack effective support and guidance during the pulling process, making them prone to jamming and tipping over. Furthermore, they lack a stable suspension mechanism after being pulled out, causing inconvenience and safety hazards for operators. In addition, the existing battery pack fixing methods and trolley locking mechanisms are inconvenient, resulting in low maintenance efficiency. The overall reliability, safety, and economy of the system still need improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a nickel-metal hydride battery box system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a nickel-metal hydride battery box system, comprising a battery box, an electrical control box disposed on one side of the battery box, a battery trolley disposed inside the battery box, rollers disposed on both sides of the battery trolley, a battery pack disposed on the battery trolley, and a cantilever device disposed inside the battery box; the cantilever device comprises a main support rail frame and a secondary support rail frame, the main support rail frame and the secondary support rail frame being rotatably connected, when the secondary support rail frame is unfolded, it acts as a cantilever to facilitate the extraction of the battery trolley, and when the secondary support rail frame is folded, it has the function of protecting the battery trolley.

[0006] Preferably, the battery trolley is equipped with three battery packs, and the battery packs are fixed with screws.

[0007] Preferably, the secondary support track frame is provided with a secondary support track frame fixing clamp.

[0008] Preferably, a limiting baffle is provided at one end of the main support track frame, a positioning post is provided on the limiting baffle, the roller is provided on the roller frame, and the roller frame is provided with positioning holes that are adapted to the positioning post.

[0009] Preferably, the battery box is provided with door panels at both ends.

[0010] Preferably, a battery management system is installed inside the electrical control box.

[0011] Preferably, the side wall of the electrical control box is provided with glands and conduits for cables to pass through.

[0012] Preferably, the battery trolley is also equipped with a connector for quick disconnection and connection of the battery box and battery pack.

[0013] Preferably, a locking device is provided at one end of the battery trolley. The locking device includes a locking rod frame, a locking rod is provided on the locking rod frame, an anti-reverse post is provided on the locking rod, and an anti-reverse triangular plate is provided on the locking rod frame.

[0014] The technical effects and advantages of this invention are as follows: By using non-metallic rollers, a physical insulation barrier is provided between the battery cart and the metal housing, achieving reliable insulation. This design fundamentally eliminates the need to spray insulating varnish onto the inner wall of the housing, which not only simplifies the production process and significantly reduces the system's manufacturing cost, but also avoids the problem of decreased insulation performance due to long-term wear and aging of the insulating varnish, thus improving the insulation reliability throughout the entire life cycle. The innovative cantilever device (composed of a main support rail frame and a foldable secondary support rail frame) design allows the unfolded secondary support rail frame to act as a stable cantilever when maintenance is required, providing full support and guidance for the pulling of the battery cart, effectively preventing the battery cart from tipping over or getting stuck, and greatly facilitating operation. In operation, the folded secondary support rail frame can be folded into the box, protecting the battery cart and saving space. It is also securely locked by the secondary support rail frame fixing clamp. The structure is ingenious and easy to use. The rear end uses a positioning post on a limit baffle to engage with a positioning hole on a roller frame to prevent the rear end of the battery cart from moving left or right; the front end uses a locking device with a backstop post and a backstop triangular plate to insert a locking rod into the lock hole of the housing for reliable locking. This coordinated front and rear fixing method ensures the absolute stability of the battery cart under vehicle operation or equipment vibration conditions, avoiding risks such as loose connectors and component wear caused by loosening. Compared to lead-acid and nickel-cadmium batteries, nickel-metal hydride batteries have significant advantages in core performance. They have higher energy density than lead-acid and nickel-cadmium batteries, enabling lightweight design; their charge / discharge rate range is far greater than that of lead-acid and nickel-cadmium batteries, adapting to more operating conditions; and their design life is several times longer than that of lead-acid and nickel-cadmium batteries, significantly reducing replacement frequency and cost. Nickel-metal hydride batteries require no electrolyte replenishment throughout their entire lifespan, only needing a deep charge-discharge cycle every 5 years. They require no routine maintenance, simplifying railcar maintenance procedures, reducing overall operating costs. Equipped with a dedicated battery management system, they can monitor battery voltage, current, and temperature in real time, analyze battery status, safety, and health, and provide overvoltage, undervoltage, and overheat alarms. They can also communicate with the vehicle's TCMS to upload data, changing the current situation where lead-acid and nickel-cadmium systems lack digital / intelligent management, and improving battery system management efficiency and safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the folding structure of the cantilever device of the present invention; Figure 3 This is a schematic diagram of the gland head and pipe connector structure of the present invention; Figure 4 This is a schematic diagram of the battery cart structure of the present invention; Figure 5 This is a schematic diagram of the locking device structure of the present invention; Figure 6 This is a schematic diagram of the cantilever device structure of the present invention; Figure 7 This is the electrical schematic diagram of the battery of the present invention; Figure 8 This is the electrical schematic diagram for online monitoring of the present invention.

[0016] In the diagram: 1. Battery box; 2. Electrical control box; 3. Door panel; 4. Cantilever device; 41. Main support rail frame; 42. Secondary support rail frame; 43. Limiting baffle; 44. Secondary support rail frame fixing clamp; 5. Battery management system; 6. Gland connector; 7. Pipe connector; 8. Battery pack; 9. Connector; 10. Roller; 11. Battery trolley; 12. Locking device; 121. Locking rod frame; 122. Locking rod; 123. Anti-reverse column; 124. Anti-reverse triangle plate. Detailed Implementation

[0017] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] This invention provides, for example Figure 1-6 The diagram illustrates a nickel-metal hydride (NiMH) battery box system, comprising a battery box 1 with doors 3 at both ends and an electrical control box 2 on one side. Inside the battery box 1 is a battery cart 11 with rollers 10 on both sides. These rollers are non-metallic and have insulating properties, ensuring reliable insulation between the battery cart and the outer casing even without insulating paint, thus reducing paint costs. Three battery packs 8 are mounted on the battery cart 11 and secured with screws. The battery packs 8 are cylindrical NiMH batteries. A cantilever device 4 is installed inside the battery box 1. The cantilever device 4 includes a main support rail frame 41 and a secondary support rail frame 42, which are rotatably connected. When the secondary support rail frame 42 is unfolded, it acts as a cantilever, facilitating the removal of the battery cart 11. When the secondary support rail frame 42 is folded, it protects the battery cart 11.

[0019] Specifically, a secondary support track frame fixing clamp 44 rotates on one of the secondary support track frames 42. The secondary support track frame fixing clamp 44 is an L-shaped elastic plate with an n-shaped handle. When the two secondary support track frames 42 are folded, the L-shaped elastic plate will lock the two secondary support track frames 42 in place and fix them.

[0020] As an embodiment of this application, a limiting baffle 43 is provided at one end of the main support track frame 41, and a positioning post is provided on the limiting baffle 43. The roller 10 is provided on the roller frame, and the roller frame is provided with a positioning hole that matches the positioning post. When the positioning post is stuck in the positioning hole, the rear end of the battery trolley 11 is fixed and there will be no problem of left and right movement.

[0021] As an embodiment of this application, a locking device 12 is provided at one end of the battery trolley 11. The locking device 12 includes a locking rod frame 121, a locking rod 122 is provided on the locking rod frame 121, a backstop post 123 is provided on the locking rod 122, and a backstop triangular plate 124 is provided on the locking rod frame 121. The battery box 1 is provided with a lock hole adapted to the locking rod 122. When the locking rod 122 is inserted into the lock hole, the front end of the battery trolley 11 is fixed. When used in conjunction with the positioning post and positioning hole, the fixation is more secure.

[0022] The electrical control box 2 is equipped with a battery management system 5. The side wall of the electrical control box 2 is equipped with a gland 6 and a pipe connector 7 for passing cables. The pipe connector is filled with non-drying putty to prevent the electrical control device or BMS (battery management system) from generating electric sparks and causing a fire in the box when hydrogen accumulates to a certain concentration. The battery trolley 11 is also equipped with a connector 9, which is used for quick disconnection and connection of the battery box 1 and the battery pack 8.

[0023] Electrical schematic diagram as follows Figure 7 As shown, the 100.8V / 150Ah battery consists of six HM150M-14-2 batteries connected in series via a power harness. Inner box 1 and inner box 2 each house three HM150M-14-2 batteries, and the positive and negative outputs are connected to the terminal blocks at the battery box to the vehicle power supply circuit.

[0024] Figure 8 To enable online detection of electrical schematics, the online monitoring system uses a DC110V control power supply output from the charger. By collecting real-time data on the total voltage, total current, and temperature of the entire battery pack, the system performs centralized analysis and processing of the battery pack data to determine its operating status. Specifically, the DC110V control power supply is converted to 24V via a DC / DC module to power the temperature acquisition board, the CAN-to-MVB gateway device, and the data acquisition instrument. The temperature acquisition board collects the temperature of each battery pack and transmits it to the data acquisition instrument. The CAN-to-MVB gateway device is connected to the bus via an MVB interface.

[0025] The battery management system adopted enables real-time monitoring of battery voltage, current, and temperature, analysis of battery status, safety, and health, alarms for overvoltage, undervoltage, and overheating, and communication with the vehicle's TCMS to upload data, thereby improving the efficiency and safety of battery system management.

[0026] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A nickel-metal hydride battery box system, characterized in that, Including battery box (1), one side of battery box (1) is provided with electric control box (2), battery box (1) is provided with battery trolley (11) inside, battery trolley (11) is provided with gyro wheel (10) on both sides, battery trolley (11) is provided with battery pack (8) on, battery box (1) is provided with cantilever device (4) inside;The cantilever device (4) includes main support rail frame (41) and vice support rail frame (42), the main support rail frame (41) and vice support rail frame (42) are rotatably connected, when vice support rail frame (42) is unfolded, as cantilever, it is convenient for battery trolley (11) to draw out, when vice support rail frame (42) is folded, it has the effect of protecting battery trolley (11).

2. The nickel-hydrogen battery box system according to claim 1, wherein: Three groups of battery packs are arranged on the battery trolley (11), and the battery packs are fixed by screws.

3. The nickel-metal hydride battery box system according to claim 1, characterized in that: A vice support rail frame fixing clamp (44) is arranged on the vice support rail frame (42).

4. The nickel-hydrogen battery box system according to claim 1, wherein: A limiting baffle (43) is arranged at one end of the main support rail frame (41), a positioning column is arranged on the limiting baffle (43), the gyro wheel (10) is arranged on a gyro wheel frame, and a positioning hole matched with the positioning column is arranged on the gyro wheel frame.

5. The nickel-hydrogen battery box system according to claim 1, wherein: Door plates (3) are arranged at both ends of the battery box (1).

6. The nickel-hydrogen battery box system according to claim 1, wherein: A battery management system (5) is arranged in the electric control box (2).

7. The nickel-hydrogen battery box system according to claim 1, wherein: A gland (6) and a pipe joint (7) for passing through a cable are arranged on the side wall of the electric control box (2).

8. The nickel-hydrogen battery box system according to claim 1, wherein: A connector (9) is further arranged on the battery trolley (11), and the connector (9) is used for quick disconnection and connection of the battery box (1) and the battery pack (8).

9. The nickel-hydrogen battery box system according to claim 1, wherein: A locking device (12) is arranged at one end of the battery trolley (11), the locking device (12) includes a lock rod frame (121), a lock rod (122) is arranged on the lock rod frame (121), a stop column (123) is arranged on the lock rod (122), and a stop triangular plate (124) is arranged on the lock rod frame (121).

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