CN210778891U - Continuous cooling device for power exchange cabinet - Google Patents

Abstract

The utility model belongs to the technical field of the charging safety of a battery replacing cabinet, in particular to a continuous cooling device for the battery replacing cabinet, which comprises a temperature monitor, a controller, a medicament bottle and an outer pipeline, wherein the outer pipeline is provided with a spray pipe corresponding to each battery compartment, and the spray pipes extend into the battery compartments; the mouth of the medicament bottle is provided with an electric control valve, an inner tube is arranged in the medicament bottle, the inner tube is a hard tube, and the axis of the inner tube is superposed with the axis of the medicament bottle; the tail end of the inner tube is provided with a guide tube, and the lower pipe orifice of the guide tube deviates from the axis and points to the side wall of the medicament bottle; the device also comprises a temperature monitor arranged in each battery compartment; the coolant above the orifice of the guide tube is sprayed out through the inner tube under the action of pressure, and the coolant below the orifice overflows from the inner tube through evaporation. The device can divide two stages release coolant, first order rapid cooling to continuously supply the coolant in the second stage, prevent that the temperature from rising again, can effectively avoid the battery in the battery compartment thermal runaway to appear.

Description

Continuous cooling device for power exchange cabinet

Technical Field

The utility model belongs to the technical field of trade the electric cabinet safety of charging, specifically be a last heat sink for trading electric cabinet.

Background

At present, a cooling system of a battery replacement cabinet generally uses an exhaust fan, and air circulation is realized in a cabinet body to achieve the purpose of cooling a battery pack. Because set up the baffle between the battery compartment of the cabinet of changing electricity, the air mobility is poor between storehouse and the storehouse, and the air in every storehouse can't be taken out fast to the exhaust fan. And the peripheral air temperature of battery cabinet is also high, and behind the exhaust fan extraction from the interior steam in storehouse, under the atmospheric pressure effect, external high temperature gas also can enter the storehouse, leads to exhaust fan's cooling performance greatly reduced. Most of the existing batteries are lead-acid batteries and lithium batteries, and the use places of the power exchange cabinet are generally outdoors and are mostly in the environment of sun exposure. When the battery is charged in summer, the temperature of the battery is high, and the battery is very easy to generate thermal runaway after the battery is exposed to the sun, so that the thermal runaway of the battery is generated, the battery is ignited and burns, and a fire hazard is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a last heat sink for trading electricity cabinet, this system can spray the coolant through the extremely fast of first stage and with the battery submergence in the coolant to reduce fast in the storehouse and battery temperature, then the second stage is through the slow release coolant, lasts long-time reduction battery compartment internal environment temperature, thereby reaches the purpose of lasting cooling, prevents or stops battery thermal runaway.

In order to achieve the above object, the utility model provides a following technical scheme: a continuous cooling device for a power transformation cabinet comprises a medicament bottle and an outer pipeline, wherein the upper part of the outer pipeline sprays medicament, the lower part of the outer pipeline is connected with the medicament bottle, the outer pipeline is provided with a spray pipe corresponding to each battery compartment, the spray pipes extend into the battery compartments, and the spray ends of the spray pipes are spray heads; the medicament bottle contains coolant and inert gas, a bottle mouth of the medicament bottle is provided with a bottle mouth assembly, an inner pipe is arranged in the medicament bottle, the inner pipe is a hard pipe, and the axis of the inner pipe is superposed with the axis of the medicament bottle; the tail end of the inner tube is provided with a guide tube, and the lower pipe orifice of the guide tube deviates from the axis and points to the side wall of the medicament bottle; the system also comprises a temperature monitor arranged in each battery compartment, the temperature monitors are connected with a controller, an electric control valve is arranged on the spray pipe or the bottle mouth assembly, and the controller is connected with and controls the electric control valve; the coolant above the orifice of the guide tube is sprayed out through the inner tube under the pressure of the inert gas, and the coolant below the orifice overflows from the inner tube through the evaporation effect.

In the technical scheme, the temperature monitor monitors the temperature in each battery compartment in real time, when the temperature reaches a preset value, the controller controls the electric control valve to be opened, the coolant in the medicament bottle is released at the moment, the releasing process comprises two processes, firstly, the coolant above the pipe orifice is quickly sprayed out, the battery compartment is quickly filled with the coolant, the temperature is forcibly reduced, and secondly, the coolant below the pipe orifice slowly overflows, so that the coolant can be continuously supplemented to the battery compartment, and the battery compartment is kept in a low-temperature state.

Preferably, the medicament bottle can be placed horizontally or vertically, the pipe orifice of the guide pipe needs to be positioned at the lowest position when the medicament bottle is placed horizontally, and the volume of the coolant below the pipe orifice of the guide pipe is the same when the medicament bottle is placed horizontally or vertically; in order to conveniently and accurately and quickly horizontally place the medicament bottle, a label in a specific horizontal placing direction of the medicament bottle is arranged on the bottle mouth assembly or the bottle body; the coolant at the upper part of the pipe orifice of the guide pipe is a water agent with 5000V voltage insulation, the coolant at the lower part is heptafluoropropane or other air-conditioning coolant, the density is higher than that of water, and the boiling point is less than-20 ℃. When the device is used, how to place the medicament bottle is selected according to the specific specification of the power exchange cabinet, and the proportion and the preset injection time of the two parts of coolants in the medicament bottle cannot be influenced.

Preferably, the spraying time of the coolant above the pipe orifice of the guide pipe is 4-8min, the rapid cooling of the battery compartment is completed, the high-concentration state of the coolant is kept continuously in the period, then the coolant below the pipe orifice of the guide pipe is slowly evaporated for 55-65min, and the coolant is continuously added into the battery compartment in the process to make up for the part flowing away from the gap.

Preferably, the inner diameter of the outer pipeline is 0.5mm-30mm, and the inner diameter of the spray pipe is 0.2mm-10 mm; the end part of the spray pipe is provided with an atomizing nozzle, the caliber of the atomizing nozzle is 0.05mm-10mm, and the lowest flow of the sprayed medicament is 12L/min.m²Under the condition of meeting the spraying requirement, an appropriate outer pipeline, a spraying pipe and a spraying head can be selected according to various factors such as the scale of a battery bin, the specification of a medicament bottle and the like, so that the system has good applicability.

Preferably, the inert gas is nitrogen, the nitrogen pressure is 0.2MPa-5MPa, the nitrogen is stable in property, wide in source and low in preparation cost, and the nitrogen can not harm the battery compartment and the air after being released.

Preferably, the temperature monitor detects the ambient temperature of the battery compartment in real time and transmits the data to the controller; when the temperature reaches a preset parameter value, the controller sends an electric signal to the electric control valve, and the cooling system starts to be started; the preset parameter values can be set according to different battery types.

Preferably, a safety valve is arranged on the bottle mouth assembly, the electronic control valves are arranged on the spray pipe, and the controller controls each electronic control valve independently. The safety valve is used as a safety valve of the medicine bottle, the safety valve can prevent coolant from leaking in the transportation and carrying processes, and the safety valve is opened after the refrigeration system is installed, so that the medicine bottle can enter a working state at any time. The electrically controlled valve provided on each nozzle can control the corresponding injection channel individually, so that the injection can be performed for the battery compartment generating the alarm signal, which can avoid waste of coolant.

Preferably, the outer pipeline is connected with the medicine bottle through the hose, and the medicine bottle can be moved in the connection state of the hose, so that the device is convenient to mount, a new medicine bottle is convenient to replace in the later period, the rigid connection between the outer pipeline and the medicine bottle can be avoided, and the leakage probability of the connection position is reduced.

Preferably, the electric control valve is arranged on a spray head at the spray end of the spray pipe, the electric control valve internally comprises a temperature sensing glass ball and a sealing ring, the temperature sensing glass ball is attached with an electric heating ring, and the temperature sensing glass ball and the sealing ring seal the spray head; the electric heating ring can heat the temperature sensing glass ball, and when the temperature of the temperature sensing glass ball reaches the fracture temperature, the temperature sensing glass ball fractures, and the spray head starts to spray the medicament.

In summary, the system can rapidly reduce the temperature of the battery compartment, and can continuously supply the coolant after temperature reduction, thereby preventing temperature from rising, and under the condition that the quantity of the coolant is the same, the medicament supply time of the system is greatly prolonged, and a limited quantity of the coolant is utilized in stages, thereby having better refrigeration function.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of a half-section structure of the medicine bottle of fig. 1.

Fig. 3 is a schematic structural view of an electric control valve used in the embodiment.

In the figure, an outer pipeline 1, a spray pipe 2, a medicine bottle 3, a hose 4, an electric control valve 5, a controller 6, a temperature monitor 7, a battery bin 8, a safety valve 9, a spray head 10, an inner pipe 31, a guide pipe 32, a temperature sensing glass ball 51, a sealing ring 52 and an electric heating ring 53.

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

Fig. 1 and fig. 2 are the utility model discloses well trade embodiment of continuous cooling system of electricity cabinet, including medicament bottle 3 and internal diameter for 18 mm's outer pipeline 1, set up on the outer pipeline 1 with the spray tube 2 of 8 one-to-ones in battery compartment, spray tube 2 stretches into in the battery compartment 8, and sets up shower nozzle 10 at the spray tube tip, 2 internal diameters 10mm in spray tube, atomizer bore 0.2mm, the bottleneck subassembly of medicament bottle 3 is passed through hose 4 to the port under 1 outer pipeline. The medicine bottle 3 is filled with coolant, an inner tube 31 is arranged in the medicine bottle 3, the inner tube 31 is a hard tube, the axis of the inner tube 31 is overlapped with the axis of the medicine bottle, an arc-shaped guide tube 32 is arranged at the tail end of the inner tube 31, and the lower pipe opening of the guide tube 32 deviates from the axis and points to the side wall of the medicine bottle 3; the safety valve 9 is arranged on the bottle mouth assembly, and as a safety valve of the medicine bottle, after the medicine bottle is connected with the outer pipeline 1, the safety valve 9 is opened.

The system also comprises a temperature monitor 7 arranged in each battery compartment 8, the temperature monitors 7 are connected with a controller 6 after being connected in series or in parallel, the controller 6 is connected with and controls the electric control valve 5, and the electric control valve 5 is arranged on each spray head 10. Specifically, the structure of the electric control valve 5 is schematically shown in fig. 3, and the inside of the electric control valve includes a temperature sensing glass ball 51 and a sealing ring 52, and an electric heating ring 53 is attached to the temperature sensing glass ball 51, and the temperature sensing glass ball 51 and the sealing ring 52 seal the spray head 10; the electric heating ring 53 can heat the temperature sensing glass ball 51, when the temperature of the temperature sensing glass ball reaches the fracture temperature, the temperature sensing glass ball fractures, and the spray head 10 starts to spray the medicament; when the environmental temperature of the battery compartment rises and reaches the fracture temperature of the temperature sensing glass ball, the temperature sensing glass ball can also be fractured.

The medicament bottle 3 contains partial high-pressure nitrogen and coolant, wherein the coolant at the upper part of the nozzle of the guide pipe is a 5000V voltage insulating water agent, the coolant at the lower part is heptafluoropropane or other air-conditioning coolant, the density of the coolant is higher than that of water, and the boiling point of the coolant is lower than-20 ℃. Under the action of the nitrogen gas, the coolant above the orifice of the guide pipe 32 is ejected through the inner pipe 31, and the coolant below the orifice slowly overflows from the inner pipe 31 by the evaporation action.

The volume of the medicine bottle 3 used in the example was 6L, the volume of the coolant above the orifice of the guide tube 32 was 4L, and the volume of the coolant below the orifice was 0.5L. In cooperation with the external pipeline 1 of the above specification, the injection phase of the medicine bottle takes 5min, and the evaporation phase of the medicine takes 60 min.

In the above technical scheme, temperature monitor real-time supervision temperature in every battery compartment 8, when the temperature reaches the default, controller 6 control automatically controlled valve 5 opens, and the coolant in the medicament bottle 3 is released this moment, and this release process includes two processes, and the quick blowout of the coolant more than the mouth of pipe makes battery compartment 8 be full of the coolant fast, forces the cooling, and the coolant below the mouth of pipe slowly overflows, and this can continuously supply the coolant for battery compartment 8, makes battery compartment 8 keep the low temperature state.

Different battery compartment 8, predetermined fire control storehouse structure is different, some needs crouch and put medicament bottle 3, some needs put medicament bottle 3 immediately, in order to satisfy different demands, set up the orificial distance of leading tube 32 highly make and apart from the bottle lateral wall, make the bottle crouch put or when putting immediately, the following medicament volume of mouth of pipe is 1.5L (when selecting to crouch to put, be located the minimum with the mouth of pipe of leading tube 32), put the medicament bottle for the accuracy crouches for being convenient for, set up a recess as the sign bottom the bottle, be located the minimum with the recess, can accurately crouch and put medicament bottle 3.

This system has real-time supervision's function to the temperature of battery compartment 8, in case a certain battery compartment temperature exceeds the default, controller 6 will start corresponding automatically controlled valve 5 alone, in the injection stage of medicament, the medicament is full of battery compartment 8 fast, in order to reduce the temperature of battery compartment 8, and can continuously supply the coolant after the cooling, prevent the temperature and rise again, this refrigeration performance is that the exhaust fan can not realize far, it combines with the exhaust fan, can effectively avoid the defect that the battery can't lower the temperature when thermal runaway leads to appearing, effectively prevent dangerous situations such as open fire or explosion that the battery thermal runaway leads to from appearing in the storehouse.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (10)

1. The utility model provides a last heat sink for trading electricity cabinet, includes medicament bottle and outer pipeline, and medicine is spouted on outer pipeline upper portion, sub-unit connection medicament bottle, its characterized in that: the outer pipeline is provided with a spray pipe corresponding to each battery compartment, the spray pipes extend into the battery compartments, and the spray ends of the spray pipes are spray heads; the medicament bottle contains coolant and part of inert gas, a bottle mouth assembly is arranged at the bottle mouth of the medicament bottle, an inner tube connected with the bottle mouth assembly is arranged inside the medicament bottle, the inner tube is a hard tube, and the axis of the inner tube is superposed with the axis of the medicament bottle; the tail end of the inner tube is provided with a guide tube, and the lower pipe orifice of the guide tube deviates from the axis and points to the side wall of the medicament bottle; the system also comprises a temperature monitor arranged in each battery compartment, wherein the temperature monitors are connected with a controller after being connected in series or in parallel, an electric control valve is arranged on the spray pipe or the bottle mouth assembly, and the controller is connected with and controls the electric control valve; the coolant above the orifice of the guide tube is sprayed out through the inner tube under the action of pressure, and the coolant below the orifice overflows from the inner tube through the action of evaporation.

2. A continuous cooling device for a power exchange cabinet according to claim 1, wherein: the medicament bottle can be placed horizontally or vertically, when the medicament bottle is placed horizontally or vertically, the volume of the coolant below the pipe orifice of the guide pipe is the same, the coolant on the upper part and the coolant on the lower part of the pipe orifice of the guide pipe are two different coolants, and the density of the coolant on the upper part is smaller than that of the coolant on the lower part.

3. A continuous cooling device for a power exchange cabinet according to claim 1, wherein: the spraying time of the coolant above the orifice of the guide pipe is 4-8min, and the evaporation time of the coolant below the orifice of the guide pipe is 55-65 min.

4. A continuous cooling device for a power change cabinet according to claim 3, wherein: the inner diameter of the outer pipeline is 0.5mm-30mm, and the inner diameter of the spray pipe is 0.2mm-10 mm; the end part of the spray pipe is provided with an atomizing nozzle with the caliber of 0.05mm-10mm, and the lowest flow of the medicament sprayed by the atomizing nozzle is 12L/min.m²。

5. A continuous cooling device for a power change cabinet according to claim 4, characterized in that: the inert gas in the medicament bottle is nitrogen, and the nitrogen pressure is 0.2MPa-5 MPa.

6. A continuous cooling device for a power change cabinet according to claim 2, wherein: the bottle mouth component or the bottle body is provided with a label of the medicine bottle in a horizontal placing specific direction.

7. A continuous cooling device for a power change cabinet according to any one of claims 1 to 6, characterized in that: the temperature monitor detects the ambient temperature of the battery compartment in real time and transmits data to the controller; when the temperature reaches a preset parameter value, the controller sends an electric signal to the electric control valve, and the cooling system starts to start.

8. A continuous cooling apparatus for a switchgear cabinet as claimed in claim 7, wherein: the bottle mouth assembly is provided with a safety valve, the electric control valves are installed on the spray pipes, and the controller controls the electric control valves independently.

9. A continuous cooling apparatus for a switchgear cabinet as claimed in claim 7, wherein: the outer line is connected to the medicine bottle through a hose, and the medicine bottle can be moved in a connected state of the hose.

10. A continuous cooling apparatus for a switchgear cabinet as claimed in claim 8, wherein: the electric control valve is arranged on a spray head at the spray end of the spray pipe, the electric control valve internally comprises a temperature sensing glass ball and a sealing ring, the temperature sensing glass ball is attached with an electric heating ring, and the temperature sensing glass ball and the sealing ring seal the spray head; the electric heating ring can heat the temperature sensing glass ball, and when the temperature of the temperature sensing glass ball reaches the fracture temperature, the temperature sensing glass ball fractures, and the spray head starts to spray the medicament.

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