Battery charging unit

Abstract

The utility model relates to a battery charging unit which comprises a charging bin, and a fire extinguishing module is fixedly installed on the charging bin. The fire extinguishing module comprises a first spraying assembly; the first spraying assembly comprises a first fire-fighting pipe and a first spraying head; the first spray head is provided with a first spray opening, a first plug, a first glass column and a heating assembly; the battery charging unit is ingenious in design, adopts an active fire extinguishing structure and is high in response speed, if flames are found or overheat abnormity caused by faults of the battery is detected, the heating assembly is actively started to rapidly rise the temperature to trigger the first glass column to be broken, a spraying system can be rapidly started, and the service life of the spraying system can be prolonged. The fire behavior can be controlled more quickly without completely depending on the accuracy of a temperature sensor; and the design that the heating assembly triggers the first glass column to be broken can effectively reduce false spraying caused by false alarm of the temperature controller, loss is reduced, and the fireproof safety performance of the charging bin can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging cabinets, and more specifically, to a battery charging unit. Background Art

[0002] A battery charging cabinet is a device designed to provide a safe charging environment for batteries. It typically includes a charging module, battery storage area, management system, and safety protection measures. Since electric vehicle batteries can overheat or short-circuit during charging, potentially causing a fire, it is crucial to have a fire extinguishing device inside the charging compartment.

[0003] Most common fire extinguishing devices in the prior art use sprinkler-type fire heads. For example, Patent No. CN202220572190.4 discloses a water fire-fighting intelligent charging cabinet, which includes a shell, multiple charging compartments are provided in the shell, and a sprinkler head connected to a water distribution pipe is provided in the charging compartment; a temperature sensor is also provided at the bottom of the charging compartment, and a solenoid valve is installed on the water distribution pipe. When the temperature reaches a preset warning temperature, the solenoid valve opens and sprays water to extinguish the fire; the above method is a passive fire extinguishing method, which automatically takes fire extinguishing measures only when the temperature reaches a certain temperature; however, this method also has the following disadvantages:

[0004] 1. Slow response time: The system will start extinguishing the fire only when the temperature reaches the preset warning temperature, which may take some time, during which time the fire may have spread.

[0005] 2. Dependence on temperature sensors: If the temperature sensor fails or misreports, it may cause the system to fail to start in time or incorrectly initiate fire extinguishing measures.

[0006] 3. Unable to respond to early-stage fires: In the early stages of a fire, the temperature may not have reached the preset warning temperature. At this time, the system cannot take fire-fighting measures and may miss the best opportunity to extinguish the fire. Utility Model Content

[0007] The technical problem to be solved by the present invention is to provide a battery charging unit in view of the above-mentioned defects of the prior art.

[0008] The technical solution adopted by the present invention to solve its technical problems is: a battery charging unit, which includes a charging compartment, wherein the charging compartment is provided with a charging cavity for placing a battery; the charging compartment is provided with a pole piece for demagnetizing and eliminating static electricity of the battery and an electric plug electrically connected to the battery; the charging compartment is fixedly installed with a fire extinguishing module; the fire extinguishing module includes a first spray assembly that actively extinguishes the battery in the charging cavity; the first spray assembly includes a first fire hose connected to the charging cavity, and a first nozzle fixedly connected to the water outlet of the first fire hose; the first nozzle is provided with a first spray port connected to the first fire hose, a first plug adapted to the first spray port, a first glass column that provides support for the first plug so that it blocks the water outlet of the first fire hose, and a heating assembly sleeved on the first glass column to trigger its fracture;

[0009] The battery charging unit of the present utility model, wherein the fire extinguishing module further comprises a second spray assembly for passively extinguishing a fire of a battery in the charging cavity;

[0010] The battery charging unit of the present invention, wherein the second spray assembly includes a second fire-fighting pipe communicating with the charging cavity, and a second nozzle fixedly connected to the water outlet of the second fire-fighting pipe; the second nozzle is provided with a second spray port communicating with the second fire-fighting pipe, a second plug adapted to fit the second spray port, and a second glass column providing support for the second plug to block the water outlet of the second fire-fighting pipe;

[0011] The battery charging unit of the present invention, wherein the fire extinguishing module is arranged above the charging compartment; the fire extinguishing module further comprises a protective cover fixedly connected to the upper surface of the charging compartment; a receiving space is provided within the protective cover; a through hole is provided on the charging compartment within the coverage of the protective cover; the receiving space is connected to the charging cavity through the through hole; the first nozzle and the second nozzle are both located within the receiving space;

[0012] The battery charging unit of the present invention, wherein the upper surface of the charging compartment is further provided with at least one pressure relief hole communicating with the charging cavity;

[0013] The battery charging unit of the present invention has an upper surface of the charging compartment provided with an opening, and a pressure relief plate closing the opening and detachably connected to the charging compartment; a plurality of pressure relief holes are evenly distributed in an array on the pressure relief plate;

[0014] The battery charging unit of the present invention is provided with a plurality of first pads for supporting the battery at the inner bottom of the charging compartment; a heat dissipation channel is provided between two adjacent first pads;

[0015] The battery charging unit of the present invention is provided with at least one second pad on the left and right inner walls of the charging compartment for positioning the battery on the left and right sides;

[0016] The battery charging unit described in the present invention further includes a fan for blowing air to the charging compartment.

[0017] The beneficial effects of the present invention are as follows: the battery charging unit is cleverly designed, employing an active fire extinguishing structure with a fast response speed. The first spray assembly can intervene as soon as a fire appears, preventing the occurrence of a fire in advance and reducing the damage caused by the fire to the battery and cabinet. The active spray fire extinguishing design prevents the first spray head from easily triggering water spraying in non-fire situations, thereby reducing the risk of misoperation. If a flame is detected or a battery failure or overheating anomaly is detected, the heating assembly is actively activated to rapidly heat up to trigger the first glass column to break, which can quickly activate the spray system without relying entirely on the accuracy of the temperature sensor, allowing for faster fire control. The design of the heating assembly triggering the first glass column to break can effectively reduce misfires caused by false alarms from the temperature controller, reducing losses and helping to improve the fire safety performance of the charging compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0019] Figure 1 This is a structural diagram of a battery charging unit in a preferred embodiment of the present utility model;

[0020] Figure 2 yes Figure 1 A schematic structural diagram of the fire extinguishing module 20;

[0021] Figure 3 yes Figure 2 A perspective exploded view of the middle fire extinguishing module 20;

[0022] Figure 4 yes Figure 3 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0023] The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0024] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] "Multiple" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0026] Moreover, the terms "up, down, front, back, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or apparatus described in this solution during normal use.

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the following will be a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work shall fall within the scope of protection of the present invention.

[0028] A battery charging unit in a preferred embodiment of the present invention is as follows Figure 1-4As shown, the charging compartment 10 includes a charging cavity 11 for placing batteries; a pole piece for demagnetizing and eliminating static electricity in the batteries, and an electrical plug electrically connected to the batteries; a fire extinguishing module 20 fixedly mounted on the charging compartment 10; the fire extinguishing module 20 includes a first spray assembly 21 for actively extinguishing fires in the batteries in the charging cavity 11; the first spray assembly 21 includes a first fire hose 211 connected to the charging cavity 11, and a first nozzle 212 fixedly connected to the water outlet of the first fire hose 211; the first nozzle 212 includes a first spray port 213 connected to the first fire hose 211, a first plug 214 adapted to fit the first spray port 213, a first glass column 215 that provides support for the first plug 214 to block the water outlet of the first fire hose 211, and a heating assembly 216 that is sleeved on the first glass column 215 to trigger the first glass column 215 to break. In this embodiment, the heating assembly can adopt a heating wire structure known in the prior art. The heating wire can be heated up through the system control of the charging cabinet; it is worth noting that controlling the heating wire heating up through the system is a conventional technical means and is not an improvement point of the present invention, so it will not be elaborated here; if a flame is found or a battery failure is detected and an overheating abnormality occurs, the system can actively start the heating component to quickly heat up to trigger the first glass column to break, and the first plug is affected by the water pressure in the first fire pipe and detached from the first spray port, thereby allowing the water in the first fire pipe to flow into the charging cavity to extinguish the fire and cool the battery.

[0029] This battery charging unit features an ingenious design, employing an active fire extinguishing mechanism with a fast response. The first sprinkler assembly intervenes at the first sign of a fire, preventing it from occurring and minimizing damage to the battery and cabinet. Furthermore, the active sprinkler fire extinguishing system prevents the first sprinkler head from easily triggering water spraying in the absence of a fire, thereby reducing the risk of misoperation. If a fire is detected, or a battery malfunction or overheating anomaly is detected, the heating assembly is activated to rapidly heat up, triggering the first glass column to break. This allows for rapid activation of the sprinkler system, eliminating reliance on the accuracy of the temperature sensor and enabling faster fire control. Furthermore, the heating assembly triggering the first glass column to break effectively reduces false alarms from the temperature controller, minimizing losses and contributing to the charging compartment's fire safety.

[0030] Furthermore, the fire extinguishing module 20 also includes a second spray assembly 22 for passively extinguishing battery fires in the charging cavity 11. By setting up both active and passive fire protection in the charging box, the charging compartment is provided with a double fire extinguishing protection, which is safe and reliable.

[0031] Optionally, the second spray assembly 22 includes a second fire hose 221 communicating with the charging cavity 11, and a second nozzle 222 fixedly connected to the water outlet of the second fire hose 221. The second nozzle 222 is provided with a second spray port 223 communicating with the second fire hose 221, a second plug 224 adapted to the second spray port 223, and a second glass column 225 providing support for the second plug 224 to block the water outlet of the second fire hose 221. When the battery temperature rises above the heat resistance threshold of the second glass column, the second glass column 225 naturally ruptures, and the second plug, affected by the water pressure in the second fire hose, detaches from the second spray port, allowing water in the second fire hose to flow into the charging cavity, extinguishing the fire and cooling the battery. This passive fire extinguishing method requires no human intervention, providing a second level of fire protection for the charging compartment.

[0032] Furthermore, the first glass column 215 is coaxially arranged with the first plug 214, and the cross-sectional area of ​​the first glass column 215 is smaller than the cross-sectional area of ​​the first plug 214. The fracture of the first glass column is thinner, so that the heating component can quickly break the first glass column for subsequent rapid fire extinguishing.

[0033] In one embodiment, the fire extinguishing module 20 is disposed above the charging compartment 10. The fire extinguishing module 20 also includes a protective cover 23 fixedly connected to the upper surface of the charging compartment 10. The fire extinguishing module 20 does not occupy excessive space in the charging compartment, thereby reducing the overall volume of the charging compartment 10. A receiving space 231 is defined within the protective cover 23. The charging compartment 10 is provided with a through hole 12 within the coverage of the protective cover 23. The receiving space communicates with the charging cavity 11 via the through hole 12. The first nozzle 212 and the second nozzle 222 are both located within the receiving space. The first and second nozzles are not susceptible to external interference. Alternatively, the fire extinguishing module 20 can be disposed within the charging compartment 10.

[0034] Furthermore, the top surface of the charging compartment 10 is provided with at least one pressure relief hole 13 communicating with the charging cavity 11. This pressure relief hole balances the internal and external pressures of the charging compartment, preventing the pressure from pushing the battery compartment door open and injuring people in the event of a battery fire or explosion. It also dissipates heat from the battery, extending its lifespan.

[0035] Furthermore, the upper surface of the charging compartment 10 is provided with an opening (not shown) and a pressure relief plate 14 that closes the opening (not shown) and is detachably connected to the charging compartment. The opening is provided at the front end of the charging compartment 10. A plurality of pressure relief holes 13 are evenly distributed in an array on the pressure relief plate 14. The pressure relief plate 14 and the charging compartment 10 can be secured by screws, snaps, or other detachable connection methods, facilitating assembly and disassembly.

[0036] Furthermore, the inner bottom of the charging compartment 10 is provided with a plurality of first pads 15 for supporting the batteries, and a heat dissipation channel is provided between adjacent first pads 15. The first pads 15 can support the batteries while leaving a heat dissipation gap between their lower surface and the inner floor of the charging compartment, thereby facilitating heat dissipation.

[0037] Furthermore, at least one second pad 15 is provided on the left and right inner walls of the charging compartment 10 to position the battery. These two second pads 15 not only prevent the battery from shifting left and right within the charging compartment, but also create a heat dissipation gap between the side walls of the charging compartment and the battery, ensuring good heat dissipation and safety.

[0038] Optionally, the battery charging unit further includes a fan (not shown) for blowing air to the charging compartment 10 , which can further dissipate the heat of the battery.

[0039] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A battery charging unit, characterized in that: The invention comprises a charging compartment, wherein a charging cavity for placing a battery is provided in the charging compartment; a pole piece for demagnetizing and eliminating static electricity of the battery and an electric plug electrically connected to the battery are provided in the charging compartment; a fire extinguishing module is fixedly installed on the charging compartment; the fire extinguishing module comprises a first spray assembly for actively extinguishing a fire of the battery in the charging cavity; the first spray assembly comprises a first fire-fighting pipe connected to the charging cavity, and a first nozzle fixedly connected to the water outlet of the first fire-fighting pipe; the first nozzle is provided with a first spray port connected to the first fire-fighting pipe, a first plug adapted to the first spray port, a first glass column providing support for the first plug so that it blocks the water outlet of the first fire-fighting pipe, and a heating assembly sleeved on the first glass column to trigger its fracture.

2. The battery charging unit according to claim 1, wherein: The fire extinguishing module further includes a second spray assembly for passively extinguishing a fire of a battery in the charging cavity.

3. The battery charging unit according to claim 2, wherein: The second spray assembly includes a second fire-fighting pipe connected to the charging cavity, and a second nozzle fixedly connected to the water outlet of the second fire-fighting pipe; the second nozzle is provided with a second spray port connected to the second fire-fighting pipe, a second plug adapted to the second spray port, and a second glass column providing support force to the second plug so that it blocks the water outlet of the second fire-fighting pipe.

4. The battery charging unit according to claim 3, characterized in that The fire extinguishing module is arranged above the charging compartment; the fire extinguishing module also includes a protective cover fixedly connected to the upper surface of the charging compartment; a accommodating space is provided in the protective cover; a through hole is provided on the charging compartment within the coverage range of the protective cover; the accommodating space is connected to the charging cavity through the through hole; the first nozzle and the second nozzle are both located in the accommodating space.

5. The battery charging unit according to claim 1, wherein: The upper surface of the charging compartment is also provided with at least one pressure relief hole connected to the charging cavity.

6. The battery charging unit according to claim 5, characterized in that The upper surface of the charging compartment is provided with an opening, and a pressure relief plate that closes the opening and is detachably connected to the charging compartment; a plurality of pressure relief holes are evenly distributed in an array on the pressure relief plate.

7. The battery charging unit according to claim 1, wherein: The inner bottom of the charging compartment is provided with a plurality of first pads for supporting the battery; a heat dissipation channel is provided between two adjacent first pads.

8. The battery charging unit according to claim 7, characterized in that At least one second pad is provided on the left and right inner walls of the charging compartment for positioning the battery on the left and right sides.

9. The battery charging unit according to any one of claims 1 to 8, characterized in that: The battery charging unit further includes a fan for blowing air toward the charging compartment.

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