Device and method for preventing glass of incubator from frosting
By using a combination system of explosion-proof glass, heating strips, and a constant humidity chamber in the incubator, the problem of frost formation on the incubator glass is solved, and defrosting of the glass surface is achieved, thus improving the safety and reliability of the test.
Patent Information
- Application Number
- CN202511073320.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-01
- Publication Date
- 2025-11-07
AI Technical Summary
In existing technologies, the glass of the incubator is prone to frost formation in low-temperature or high-humidity environments, which causes the glass to fog up and become blurry, affecting visibility and reducing the safety and reliability of the test.
The system, consisting of explosion-proof glass, heating strips, a humidifier, a temperature sensor, and a humidity collector, monitors temperature and humidity in real time to control the operation of the heating strips and the humidifier, maintaining a constant temperature and humidity on the glass surface and preventing frost formation.
It effectively prevents frost formation on glass, improving glass clarity and the safety and reliability of testing.
Smart Images
Figure CN120900726A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of battery, and particularly relates to a device and method for preventing frosting of glass of a temperature box. BACKGROUND
[0002] With the rapid development of new energy automobile, energy storage system and other industries, high and low temperature test boxes are widely used in performance testing of power batteries. The clarity of the observation window glass of the door body of the test box is crucial. The operator needs to monitor the appearance change of the battery in the test box in real time. If the abnormal appearance change cannot be identified in time and the test is terminated, serious safety accidents such as battery explosion may be caused. In the prior art, resistance wires or electric heating pipes are usually used to convert electric energy into heat energy, and the heat is uniformly distributed in the interior of the test box by circulating air with a fan to heat and warm the interior of the test box. However, when the interior of the temperature box works at low temperature, high humidity or high temperature, the significant temperature difference and humidity difference between the interior and exterior of the box will rapidly form condensate water or even frost on the surface of the glass, resulting in glass fogging and blurring, seriously affecting the visibility, and failing to defrost the surface of the glass, thereby reducing the safety and reliability of the test.
[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. SUMMARY
[0004] The technical problem to be solved by the present application is the technical problem that the surface of the glass cannot be defrosted, and the safety and reliability of the test are poor.
[0005] To solve the above technical problems, the application provides a device for preventing the frosting of the glass of a temperature box, which comprises a box body, a blast door hinged to the box body, a blast-proof glass installed on an observation area of the blast door, the blast-proof glass, the blast door and the box body forming a test cavity for accommodating a battery to be tested, a heating strip installed along the circumference of the blast-proof glass and in contact with the blast-proof glass, a constant humidity machine, a temperature sensor arranged in the test cavity, a humidity collector arranged in the test cavity, a solid-state relay connected to the heating strip, and a control module, the constant humidity machine being in communication with the test cavity, the temperature sensor being used to collect the environmental temperature information of the test cavity in real time, the humidity collector being used to collect the humidity information of the test cavity in real time, the control module being connected to the solid-state relay, the temperature sensor, the constant humidity machine and the humidity collector, the control module being configured to receive the environmental temperature information, compare the environmental temperature information with a preset temperature deviation value, and determine whether the environmental temperature information is greater than the temperature deviation value; if yes, a direct current control signal for controlling the solid-state relay to be turned on is generated, the solid-state relay receives the direct current control signal, controls the heating strip to be powered on to heat the blast-proof glass; the humidity information is received, the humidity information is compared with a preset humidity deviation value, and it is determined whether the humidity information is greater than the preset humidity deviation value; if yes, a humidity control signal for controlling the constant humidity machine to be turned on is generated, the constant humidity machine receives the humidity control signal, starts the constant humidity machine to reduce the humidity in the test cavity, and maintains the constant humidity state in the test cavity.
[0006] Optionally, the device further comprises an insulating platform arranged in the test cavity and used to carry the battery to be tested, and a support net arranged on the blast door, the support net covering the blast-proof glass and being located in the test cavity.
[0007] Optionally, the device further comprises high-temperature glue connected to the blast door and the blast-proof glass respectively, and arranged along the circumference of the blast-proof glass.
[0008] Optionally, the control module comprises a temperature control meter or a PLC.
[0009] Optionally, the device further comprises a tin foil layer wrapped on the heating strip for heat equalization and insulation.
[0010] Optionally, the device further comprises a power supply device, the power supply device being electrically connected to the solid-state relay, and the solid-state relay being located between the power supply device and the heating strip.
[0011] According to another aspect of the present application, the present application also provides a method for preventing the frosting of the glass of a temperature box, the method comprising the device for preventing the frosting of the glass of a temperature box, and further comprising the following steps: S1, placing a battery to be tested on an insulating platform in a test cavity, starting a refrigeration system after closing a blast door to reduce the temperature in the test cavity to a base temperature, the base temperature being not higher than 0℃; S2, collecting environmental temperature information in the test cavity in real time through a temperature sensor, and collecting humidity information in the test cavity in real time through a humidity collector; S3, a control module receiving the environmental temperature information and the humidity information respectively; S4, the control module comparing the environmental temperature information with a preset temperature deviation value to determine whether the environmental temperature information is greater than the temperature deviation value; S5, if yes, generating a direct current control signal for controlling the solid-state relay to be turned on, the solid-state relay receiving the direct current control signal and controlling the heating strip to be powered on to heat the explosion-proof glass; S6, or the control module comparing the humidity information with a preset humidity deviation value to determine whether the humidity information is greater than the preset humidity deviation value; S7, if yes, generating a humidity control signal for controlling the constant humidity machine to be turned on, the constant humidity machine receiving the humidity control signal and maintaining a constant humidity state in the test cavity.
[0012] Optionally, the step S4 comprises taking the difference between the environmental temperature information and the base temperature as a temperature comparison value, comparing the temperature comparison value with the temperature deviation value to determine whether the temperature comparison value is greater than the temperature deviation value, wherein the temperature comparison value is 5℃, and the base temperature is an initial temperature value at the beginning of the test.
[0013] Optionally, the step S4 further comprises, if no, not generating the direct current control signal for controlling the solid-state relay to be turned on, at this time, the solid-state relay being in an off state so that the heating strip stops heating the explosion-proof glass.
[0014] Optionally, the step S6 further comprises, if no, not generating the humidity control signal for controlling the constant humidity machine to be turned on, at this time, the constant humidity machine stopping working.
[0015] Advantages:
[0016] The present application provides a device for preventing the glass of a temperature box from frosting, which is hinged to a box body through a rupture disc, a rupture disc glass is installed on the observation area of the rupture disc, the rupture disc glass, the rupture disc and the box body enclose a test cavity, the test cavity is used to accommodate a battery to be tested, a heating strip is installed along the circumference of the rupture disc and is in contact with the rupture disc, a constant humidity machine is in communication with the test cavity, a temperature sensor and a humidity collector are respectively arranged inside the test cavity, the temperature sensor is used to collect the environmental temperature information inside the test cavity in real time, the humidity collector is used to collect the humidity information inside the test cavity in real time, a solid-state relay is connected with the heating strip, a control module is connected with the solid-state relay, the temperature sensor, the constant humidity machine and the humidity collector, the control module receives the environmental temperature information and compares the environmental temperature information with a preset temperature deviation value to determine whether the environmental temperature information is greater than the temperature deviation value, if yes, a direct current control signal for controlling the solid-state relay to be turned on is generated, after the solid-state relay receives the direct current control signal, the heating strip is powered to heat the rupture disc, then the humidity information is received and compared with a preset humidity deviation value to determine whether the humidity information is greater than the preset humidity deviation value, if yes, a humidity control signal for controlling the constant humidity machine to be turned on is generated, after the constant humidity machine receives the humidity control signal, the constant humidity machine is started to reduce the humidity inside the test cavity to maintain the constant humidity state inside the test cavity. In this way, the control module acquires the environmental temperature information inside the rupture disc in real time and compares the environmental temperature information with the preset temperature deviation value, if the environmental temperature is higher than the deviation value, the control module drives the heating strip to be powered to heat through the solid-state relay, so that the temperature of the outer surface of the rupture disc is increased, the temperature difference between the inner surface and the outer surface of the rupture disc is reduced, to avoid the water vapor condensing into frost on the rupture disc. At the same time, the control module acquires the humidity information in real time and compares the humidity information with the preset humidity deviation value, if the humidity is higher than the deviation value, the control module starts the dehumidification operation of the constant humidity machine to reduce the humidity inside the test cavity, to inhibit the frosting, to maintain the constant humidity state inside the test cavity, to realize the defrosting of the glass surface, to improve the stability of the clarity of the rupture disc. Thus, the surface of the glass can be defrosted, the safety and reliability of the test are improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only show some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.
[0018] Figure 1 The present application provides a device for preventing the glass of a temperature box from frosting, which is hinged to a box body through a rupture disc, a rupture disc glass is installed on the observation area of the rupture disc, the rupture disc glass, the rupture disc and the box body enclose a test cavity, the test cavity is used to accommodate a battery to be tested, a heating strip is installed along the circumference of the rupture disc and is in contact with the rupture disc, a constant humidity machine is in communication with the test cavity, a temperature sensor and a humidity collector are respectively arranged inside the test cavity, the temperature sensor is used to collect the environmental temperature information inside the test cavity in real time, the humidity collector is used to collect the humidity information inside the test cavity in real time, a solid-state relay is connected with the heating strip, a control module is connected with the solid-state relay, the temperature sensor, the constant humidity machine and the humidity collector, the control module receives the environmental temperature information and compares the environmental temperature information with a preset temperature deviation value to determine whether the environmental temperature information is greater than the temperature deviation value, if yes, a direct current control signal for controlling the solid-state relay to be turned on is generated, after the solid-state relay receives the direct current control signal, the heating strip is powered to heat the rupture disc, then the humidity information is received and compared with a preset humidity deviation value to determine whether the humidity information is greater than the preset humidity deviation value, if yes, a humidity control signal for controlling the constant humidity machine to be turned on is generated, after the constant humidity machine receives the humidity control signal, the constant humidity machine is started to reduce the humidity inside the test cavity to maintain the constant humidity state inside the test cavity. In this way, the control module acquires the environmental temperature information inside the rupture disc in real time and compares the environmental temperature information with the preset temperature deviation value, if the environmental temperature is higher than the deviation value, the control module drives the heating strip to be powered to heat through the solid-state relay, so that the temperature of the outer surface of the rupture disc is increased, the temperature difference between the inner surface and the outer surface of the rupture disc is reduced, to avoid the water vapor condensing into frost on the rupture disc. At the same time, the control module acquires the humidity information in real time and compares the humidity information with the preset humidity deviation value, if the humidity is higher than the deviation value, the control module starts the dehumidification operation of the constant humidity machine to reduce the humidity inside the test cavity, to inhibit the frosting, to maintain the constant humidity state inside the test cavity, to realize the defrosting of the glass surface, to improve the stability of the clarity of the rupture disc. Thus, the surface of the glass can be defrosted, the safety and reliability of the test are improved.
[0019] Figure 2 A structural block diagram of a temperature sensor, a humidity collector, a control module, a solid-state relay, a heating strip, a constant humidity machine and a power supply device in a device for preventing frosting of a glass of a temperature box according to an embodiment of the present application.
[0020] Figure 3 A flow chart of a method for preventing frosting of a glass of a temperature box according to an embodiment of the present application. DETAILED DESCRIPTION
[0021] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings, in which the same or similar components are denoted by the same or similar reference numerals throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are for the purpose of explanation only, and are not to be understood as limiting the present application.
[0022] In order to make the technical personnel in the art better understand the scheme of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0023] In the embodiments of the present application, at least one means one or more, and multiple means two or more. In the description of the present application, the terms "first", "second", "third" and the like are only used for distinguishing the purposes of description, and cannot be understood as indicating or implying relative importance, nor indicating or implying sequence.
[0024] In the present specification, the reference "an embodiment" or "some embodiments" and the like means that a specific feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Therefore, the terms "include", "comprise", "have" and their variants in the present specification mean "include but not limited to", unless otherwise specifically emphasized. It should be noted that in the embodiments of the present application, the "and / or" description of the associated objects represents that there can be three relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B together, and the existence of B alone.
[0025] It should be noted that in the embodiments of the present application, when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be an intermediate component. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be an intermediate component. When a component is referred to as being "set on" another component, it can be directly set on the other component or there can be an intermediate component. Meanwhile, "connection" in the embodiments of the present application can also be understood as electrical connection, and the connection between two electrical components can be direct or indirect connection between the two electrical components. For example, A and B are connected, which can be direct connection between A and B, or indirect connection between A and B through one or more other electrical components. The terms "vertical", "horizontal", "left", "right" and the like used in the embodiments of the present application are only for illustrative purposes, and are not intended to limit the present application.
[0026] An apparatus for preventing the glass of a temperature box from frosting provided by an embodiment of the present application is shown in Figures 1 to 2 Figure 1 is a structural schematic diagram of an apparatus for preventing the glass of a temperature box from frosting provided by an embodiment of the present application, Figure 2 A structure block diagram of a temperature sensor 6, a humidity collector 7, a control module 9, a solid-state relay 8, a heating strip 4, a constant humidity machine 5 and a power supply device 103 in a device for preventing the frosting of a glass of a temperature box is provided by the embodiment of the present application. The device for preventing the frosting of the glass of the temperature box provided by the embodiment of the present application comprises a box body 1, a rupture disc 2, a rupture glass 3, a heating strip 4, a constant humidity machine 5, a temperature sensor 6, a humidity collector 7, a solid-state relay 8 and a control module 9, the rupture disc 2 is hinged to the box body 1, the rupture glass 3 is installed on an observation area 21 of the rupture disc 2, the rupture glass 3, the rupture disc 2 and the box body 1 enclose a closed test cavity 11, the test cavity 11 is used for accommodating a battery 104 to be tested, the heating strip 4 is installed along the circumference of the rupture glass 3 and the heating strip 4 is in contact with the rupture glass 3, the constant humidity machine 5 is in communication with the inside of the test cavity 11, the temperature sensor 6 and the humidity collector 7 are respectively arranged in the inside of the test cavity 11, the temperature sensor 6 is used for collecting the environmental temperature information in the inside of the test cavity 11 in real time, the humidity collector 7 is used for collecting the humidity information in the inside of the test cavity 11 in real time, the solid-state relay 8 is connected with the heating strip 4, the control module 9 is connected with the solid-state relay 8, the temperature sensor 6, the constant humidity machine 5 and the humidity collector 7 respectively, the control module 9 is configured to receive the environmental temperature information and compare the environmental temperature information with a preset temperature deviation value to determine whether the environmental temperature information is greater than the temperature deviation value; if yes, a direct current control signal for controlling the solid-state relay 8 to be turned on is generated, after the solid-state relay 8 receives the direct current control signal, the heating strip 4 is controlled to be powered on to heat the rupture glass 3; the humidity information is received and compared with a preset humidity deviation value to determine whether the humidity information is greater than the preset humidity deviation value; if yes, a humidity control signal for controlling the constant humidity machine 5 to be turned on is generated, after the constant humidity machine 5 receives the humidity control signal, the constant humidity machine 5 is started to reduce the humidity in the test cavity 11 to maintain the constant humidity state in the test cavity 11.
[0027] The inside of the test cavity 11 has a space for accommodating the temperature sensor 6, the humidity collector 7 and the battery 104 to be tested, the heating strip 4 is installed along the circumference of the rupture glass 3 and is in close contact with the surface of the rupture glass 3, the output end of the constant humidity machine 5 is in communication with the test cavity 11, for example, the dehumidifying outlet of the constant humidity machine 5 can be connected with the interface of the side wall of the test cavity 11 through a stainless steel bellows, and the constant humidity machine 5 can adopt semiconductor refrigeration dehumidification. The rupture disc 2 can be hinged to the front end face of the box body 1 through a hinge. The humidity collector 7 can adopt a capacitive humidity probe, and the temperature sensor 6 and the humidity collector 7 can be respectively installed on one side of the test cavity 11.
[0028] The control module 9 can be electrically connected with the temperature sensor 6 and the humidity collector 7 respectively, for receiving the environmental temperature information collected by the temperature sensor 6 and the humidity information collected by the humidity collector 7 in real time. The control module 9 can include a single-chip microcomputer with built-in algorithm, such as the algorithm is programmed to include reading the environmental temperature information collected by the temperature sensor 6 and the humidity information collected by the humidity collector 7 at a certain frequency. And compare the environmental temperature information with the preset temperature deviation value, if the environmental temperature information is greater than the preset temperature deviation value, a direct current control signal is generated and output to the solid-state relay 8, the solid-state relay 8 can turn on the alternating current power supply, so that the heating strip 4 is powered to heat and heat the explosion-proof glass 3. The control module 9 can compare the humidity information with the preset humidity deviation value, if the humidity information is greater than the preset humidity deviation value, a humidity control signal is generated and output to the constant humidity machine 5, the constant humidity machine 5 starts dehumidification operation to reduce the humidity in the test cavity 11 and maintain its constant humidity state.
[0029] In actual work, when anti-frosting or defrosting control is needed, the control module 9 compares the received environmental temperature information with the preset temperature deviation value. If the result shows that the current environmental temperature information is higher than the temperature deviation value, that is, the temperature change amplitude of the inner surface of the glass is too large and the frosting risk is high, the control module 9 generates and outputs a direct current control signal to the solid-state relay 8. The solid-state relay 8 receives the direct current control signal and immediately acts to turn on the power supply of the heating strip 4 and the power supply equipment 103, the heating strip 4 is powered to heat and conduct heat to the closely contacted periphery of the explosion-proof glass 3, so that the temperature difference between the inner surface of the glass and the humid hot airflow in the cavity is significantly reduced, which is conducive to reducing the possibility of water vapor condensing into frost on the ice-cold inner surface of the glass. When constant humidity control is needed, the control module 9 compares the received humidity information with the preset humidity deviation value. If the result shows that the current humidity information is higher than the humidity deviation value, that is, the humidity in the cavity is too high and water vapor is more likely to condense, the control module 9 generates and outputs a humidity control signal to the constant humidity machine 5. The constant humidity machine 5 receives the humidity control signal and immediately starts dehumidification operation to actively reduce the humidity level in the test cavity 11, such as through refrigeration cycle or adsorption drying to cool the humid air flowing through the inside of the constant humidity machine 5 to below the dew point, so that water vapor condenses and is collected and discharged, and then dry air is sent back to the inside of the test cavity 11.
[0030] In the embodiment, the explosion door 2 is hinged on the box body 1, the explosion glass 3 is installed on the observation area 21 of the explosion door 2, the explosion glass 3, the explosion door 2 and the box body 1 enclose to form a test cavity 11 for accommodating the battery 104 to be tested, the heating strip 4 is installed along the circumference of the explosion glass 3 and in contact with the explosion glass 3, the constant humidity machine 5 is in communication with the test cavity 11, the temperature sensor 6 and the humidity collector 7 are respectively arranged in the test cavity 11, the environmental temperature information in the test cavity 11 is collected in real time by the temperature sensor 6, the humidity information in the test cavity 11 is collected in real time by the humidity collector 7, the solid-state relay 8 is connected with the heating strip 4, the control module 9 is connected with the solid-state relay 8, the temperature sensor 6, the constant humidity machine 5 and the humidity collector 7, the environmental temperature information is received by the control module 9 and compared with the preset temperature deviation value to determine whether the environmental temperature information is greater than the temperature deviation value, if yes, the direct current control signal for controlling the solid-state relay 8 to be turned on is generated, after the solid-state relay 8 receives the direct current control signal, the heating strip 4 is controlled to be powered on to heat the explosion glass 3, then the humidity information is received and compared with the preset humidity deviation value to determine whether the humidity information is greater than the preset humidity deviation value, if yes, the humidity control signal for controlling the constant humidity machine 5 to be turned on is generated, after the constant humidity machine 5 receives the humidity control signal, the constant humidity machine 5 is started to reduce the humidity in the test cavity 11 to maintain the constant humidity state in the test cavity 11. In this way, the control module 9 acquires the environmental temperature information on the inside of the explosion glass 3 in real time and compares the environmental temperature information with the preset temperature deviation value, if the environmental temperature is higher than the deviation value, the control module 9 drives the heating strip 4 to be powered on to heat by the solid-state relay 8, so that the temperature of the outer surface of the explosion glass 3 is increased to reduce the temperature difference between the inner surface and the outer surface of the explosion glass 3 to avoid the water vapor condensing into frost on the explosion glass 3. At the same time, the control module 9 acquires the humidity information in real time and compares the humidity information with the preset humidity deviation value, if the humidity is higher than the deviation value, the control module 9 starts the dehumidification operation of the constant humidity machine 5 to reduce the humidity in the test cavity 11 to inhibit the frost, so that the constant humidity state in the test cavity 11 is achieved to realize the defrosting of the glass surface and improve the stability of the clarity of the explosion glass 3. Thus, the technical effect of defrosting the surface of the glass and improving the safety and reliability of the test is achieved.
[0031] As an implementation form, the device for preventing the glass of the temperature box from frosting provided by the first embodiment of the present application further comprises an insulating platform 10 and a support net, the insulating platform 10 is arranged inside the test cavity 11, and the insulating platform 10 is used for carrying the battery 104 to be tested, the support net is arranged on the explosion-proof door 2, the support net covers the explosion-proof glass 3, and the support net is located inside the test cavity 11. The battery 104 to be tested can be physically isolated from the conductive structure of the test cavity 11 by the insulating platform 10, so as to block the stray current conduction path generated when the battery is abnormal, such as liquid leakage or short circuit. The support net covers the inside of the explosion-proof glass 3, when the battery test occurs in the extreme case of severe thermal runaway, explosion and the like, causing the explosion-proof glass 3 to be accidentally broken, the support net can physically intercept the high-speed splashing glass fragments, prevent the glass fragments from impacting the equipment in the test cavity 11 or splashing out of the cavity to threaten the safety of personnel, so that the key sensing and executing components such as the temperature sensor 6, the humidity collector 7 and the heating strip 4 are not damaged or disturbed in the extreme working condition, and can still work stably in the whole test process, including the battery failure stage.
[0032] In some embodiments, the device for preventing the glass of the temperature box from frosting provided by the first embodiment of the present application further comprises high-temperature glue 102, the high-temperature glue 102 is connected with the explosion-proof door 2 and the explosion-proof glass 3 respectively, and the high-temperature glue 102 is arranged along the circumference of the explosion-proof glass 3. The circumferential sealing and bonding of the high-temperature glue 102 can improve the air tightness of the connection between the explosion-proof door 2 and the explosion-proof glass 3, so as to prevent the moisture in the test cavity 11 from leaking along the gap of the glass edge, improve the measurement accuracy of the humidity collector 7 and the dehumidification efficiency of the constant humidity machine 5. And since the heating strip 4 is installed on the periphery of the explosion-proof glass 3 and contacts the same, the temperature of the glass periphery area is high during the continuous heating process, the high-temperature glue 102 has the characteristics of resisting high temperature, and can maintain the bonding strength and sealing property for a long time without failure in this working condition, which is beneficial to improve the sealing property of the cavity and the reliability of the structure of the connection.
[0033] In some embodiments, the control module 9 comprises a temperature control meter or a PLC, the temperature control meter or the PLC is used as an automatic control device, the temperature control meter can perform the comparison between the above-mentioned environmental temperature information and the preset temperature deviation value and drive the solid-state relay 8. The PLC can also perform the above-mentioned temperature control, and efficiently realize the humidity information processing, the humidity deviation value comparison and the start-stop control of the constant humidity machine 5, and can also combine or time-optimize the temperature control and the humidity control as needed, respectively.
[0034] In some embodiments, the device for preventing the frosting of the glass of the incubator provided by the first embodiment of the present application further comprises a tin foil layer, which is wrapped around the heating strip 4 and uniformly heats and insulates the heating strip 4 through the tin foil layer. By wrapping the tin foil layer around the outside of the heating strip 4, the tin foil layer can promote the rapid and uniform distribution of the temperature of the heating area of the heating strip 4 itself as a good thermal conductor, so as to avoid the local overheating or cold spots of the heating strip 4. Meanwhile, the uniform heating effect can promote the more uniform conduction of the heat to the periphery of the explosion-proof glass 3 through the contact surface, so as to improve the consistency of the overall heating of the explosion-proof glass 3 and more effectively reduce the temperature difference between the inner and outer surfaces of the whole explosion-proof glass 3. In addition, the complete wrapping of the conductive heating element of the heating strip 4 in the tin foil layer can effectively prevent the direct contact of the live part of the heating strip 4 with the external environment, so as to avoid the risk of accidental electric leakage and short circuit.
[0035] In some embodiments, the device for preventing the frosting of the glass of the incubator provided by the first embodiment of the present application further comprises a power supply device 103, which is electrically connected with the solid-state relay 8, and the solid-state relay 8 is located between the power supply device 103 and the heating strip 4. The power supply device 103 can include an AC / DC converter or direct access to the mains to provide the main loop current required for the operation of the heating strip 4. The solid-state relay 8 as a switching device can be located in the main loop and accept the low-voltage DC control signal sent by the control module 9 to drive the internal optical coupling or semiconductor switch of the solid-state relay 8 to act, so as to safely control the strong current with weak current, that is, to control the on-off of the main loop, and to improve the reliability and execution efficiency of the power supply and on-off action of the heating strip 4.
[0036] In order to make the method for preventing the frosting of the glass of the incubator provided by the present application more clear, the above-mentioned first embodiment has made a detailed description of the device for preventing the frosting of the glass of the incubator, and based on the same inventive concept, the present application further provides a method for preventing the frosting of the glass of the incubator, which will be described in detail in the second embodiment.
[0037] Please refer to Figure 3 shown in the figure, Figure 3 is a flowchart of the method for preventing the frosting of the glass of the incubator provided by the first embodiment of the present application. The second embodiment of the present application provides a method for preventing the frosting of the glass of the incubator, which comprises the above-mentioned device for preventing the frosting of the glass of the incubator and further comprises the following steps:
[0038] Step S1, placing the battery to be tested 104 on the insulating platform 10 in the test cavity 11, starting the refrigeration system after closing the explosion-proof door 2 to reduce the temperature in the test cavity 11 to a base temperature, and the base temperature is not higher than 0℃;
[0039] Specifically, after placing the battery to be tested 104 on the insulating platform 10 in the test cavity 11, closing the explosion-proof door 2, and starting the refrigeration system to reduce the temperature in the test cavity 11 to a base temperature, the base temperature is set to be not higher than 0°C, as the initial temperature condition at the beginning of the test, for example, when the base temperature is -1°C, the temperature of the above-mentioned explosion-proof glass 3 is also -1°C. By setting the base temperature to be less than or equal to 0°C, a low-temperature test environment can be simulated. The refrigeration system can include a cascade compressor set or a variable frequency compressor, and the evaporator is located at the top of the test cavity 11 to reduce the temperature at a certain rate until the temperature sensor 6 feedback value reaches the base temperature. In addition, the refrigeration system can also integrate a temperature feedback control unit, such as by dynamically adjusting the cooling rate to improve the uniformity of the temperature drop to the base temperature.
[0040] Step S2, collecting the environmental temperature information in the test cavity 11 in real time through the temperature sensor 6, and collecting the humidity information in the test cavity 11 in real time through the humidity collector 7;
[0041] Specifically, the environmental temperature information can reflect the thermal state near the glass, that is, the greater the temperature difference, the higher the risk of frosting, and the humidity information can reflect the saturation degree of water vapor, that is, the higher the humidity, the higher the risk of condensation. The collected environmental temperature information and humidity information can provide input for the control module 9 for real-time anti-frosting control.
[0042] Step S3, the control module 9 receives the environmental temperature information and the humidity information respectively;
[0043] Specifically, the control module 9 is a programmable logic unit, such as a PLC. After receiving the information, the control module 9 can make the following judgments of steps S4 and S6, and execute the following steps S5 and S7, so as to close the loop of anti-frosting and constant humidity control, and realize the stability of the glass surface clarity.
[0044] Step S4, the control module 9 compares the environmental temperature information with a preset temperature deviation value to determine whether the environmental temperature information is greater than the temperature deviation value;
[0045] The step S4 includes taking the difference between the environmental temperature information and the base temperature as a temperature comparison value, comparing the temperature comparison value with the temperature deviation value to determine whether the temperature comparison value is greater than the temperature deviation value, wherein the temperature comparison value is 5°C, and the base temperature is the initial temperature value at the beginning of the test.
[0046] The step S4 further includes if not, no direct current control signal is generated for controlling the solid-state relay 8 to be turned on, at this time the solid-state relay 8 is in an open state, so that the heating strip 4 stops heating the explosion-proof glass 3.
[0047] Specifically, the control module 9 compares the ambient temperature information with the preset temperature deviation value to determine whether the ambient temperature information is greater than the temperature deviation value, such as taking the difference between the calculated ambient temperature information and the base temperature as the temperature comparison value, and comparing the temperature comparison value with the preset temperature deviation value; if the determination result is no, such as the temperature comparison value is not greater than the deviation value, no direct current control signal for controlling the solid state relay 8 to be turned on is generated, at this time the solid state relay 8 is in an off state, and the heating strip 4 stops heating the explosion-proof glass 3. That is, by calculating the temperature comparison value, i.e. the ambient temperature information minus the base temperature, and comparing the temperature comparison value with the temperature deviation value, it can be determined whether the temperature difference is out of limit. If not, the heating is turned off to avoid excessive heating leading to energy waste or unnecessary temperature fluctuation. The temperature comparison value can reflect the degree of glass surface temperature difference, and the temperature comparison value higher than the temperature deviation value indicates a high risk of frosting.
[0048] Step S5, if yes, a direct current control signal for controlling the solid state relay 8 to be turned on is generated, and after the solid state relay 8 receives the direct current control signal, the heating strip 4 is controlled to be powered on to heat the explosion-proof glass 3;
[0049] Specifically, if the ambient temperature information is greater than the temperature deviation value, the control module 9 generates a direct current control signal for controlling the solid state relay 8 to be turned on, and after the solid state relay 8 receives it, the heating strip 4 is controlled to be powered on to heat the explosion-proof glass 3. By generating a direct current control signal, the solid state relay 8 is quickly turned on, the heating strip 4 is powered on to heat and conduct to the glass periphery, which can reduce the temperature difference between the inside and outside of the explosion-proof glass 3, i.e. shorten the temperature difference between the outer surface of the explosion-proof glass 3 and the environment near the inner surface of the explosion-proof glass 3, directly preventing frosting.
[0050] Step S6, or the control module 9 compares the humidity information with a preset humidity deviation value to determine whether the humidity information is greater than the preset humidity deviation value.
[0051] Wherein, after the step S6, if no, no humidity control signal for controlling the constant humidity machine 5 to be turned on is generated, at this time the constant humidity machine 5 stops working.
[0052] Specifically, the humidity information can reflect the water vapor content, i.e. the higher the value of the humidity information, the higher the dew point and the greater the risk of frosting, and the preset humidity deviation value can be specifically set according to the actual test requirements. By comparing the humidity information with the preset humidity deviation value through the control module 9, it is determined whether the humidity information is greater than the preset humidity deviation value, and if the determination result is that the humidity information is not greater than the deviation value, no humidity control signal for controlling the constant humidity machine 5 to be turned on is generated, at this time the constant humidity machine 5 stops working, to avoid excessive dehumidification leading to dryness of the cavity or energy waste, and maintain the humidity stability of the test cavity 11.
[0053] If yes, a humidity control signal for controlling the dehumidifier 5 to start is generated, and the dehumidifier 5 receives the humidity control signal to maintain the constant humidity state in the test cavity 11.
[0054] Specifically, when it is judged that the humidity information is greater than the preset humidity deviation value, the control module 9 generates a humidity control signal for controlling the dehumidifier 5 to start, and the dehumidifier 5 starts to maintain the constant humidity state in the test cavity 11 through dehumidification operation after receiving the humidity control signal. The generation of the humidity control signal enables the dehumidifier 5 to start quickly, which can reduce the absolute humidity in the cavity and inhibit the condensation of water vapor on the glass surface.
[0055] The application provides a method for preventing frost formation on the glass of a temperature box. The battery to be tested 104 is placed on the insulating platform 10 in the test cavity 11, and the refrigeration system is started to reduce the temperature in the test cavity 11 to a base temperature not higher than 0℃ after the explosion-proof door 2 is closed. Then, the temperature sensor 6 is used to collect the environmental temperature information in the test cavity 11 in real time, and the humidity collector 7 is used to collect the humidity information in the test cavity 11 in real time. The control module 9 receives the environmental temperature information and the humidity information respectively. Then, the control module 9 compares the environmental temperature information with a preset temperature deviation value to judge whether the environmental temperature information is greater than the temperature deviation value. If yes, a direct current control signal for controlling the solid-state relay 8 to start is generated, and the solid-state relay 8 controls the heating strip 4 to be powered on to heat the explosion-proof glass 3 after receiving the direct current control signal. Alternatively, the control module 9 compares the humidity information with a preset humidity deviation value to judge whether the humidity information is greater than the preset humidity deviation value. If yes, a humidity control signal for controlling the dehumidifier 5 to start is generated, and the dehumidifier 5 receives the humidity control signal to maintain the constant humidity state in the test cavity 11. The control module 9 acquires the environmental temperature information inside the explosion-proof glass 3 in real time and compares the environmental temperature information with a preset temperature deviation value. If the environmental temperature is higher than the deviation value, the control module 9 drives the heating strip 4 to be powered on to heat through the solid-state relay 8, so that the temperature of the outer surface of the explosion-proof glass 3 is increased, and the temperature difference between the inner surface and the outer surface of the explosion-proof glass 3 is reduced, to avoid the condensation of water vapor on the explosion-proof glass 3 to form frost. At the same time, the control module 9 acquires the humidity information in real time and compares the humidity information with a preset humidity deviation value. If the humidity is higher than the deviation value, the control module 9 starts the dehumidification operation of the dehumidifier 5 to reduce the humidity in the test cavity 11, so as to inhibit frost formation, maintain the constant humidity state in the test cavity 11, realize defrosting of the glass surface, and improve the stability of the clarity of the explosion-proof glass 3. Thus, the technical effect of defrosting the glass surface and improving the safety and reliability of the test is achieved.
[0056] Finally, it should be noted that the above detailed description is merely illustrative of the technical solutions of the present application and is not limiting, and although the present application has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.
Claims
1. A device for preventing the frosting of a glass of a temperature chamber, characterized in that, The device comprises a box, a blast door hinged to the box, a blastproof glass installed on an observation area of the blast door, the blastproof glass, the blast door and the box enclosing a test cavity for accommodating a battery to be tested, a heating strip installed along the circumference of the blastproof glass and in contact with the blastproof glass, a constant humidity machine, a temperature sensor arranged in the test cavity, a humidity collector arranged in the test cavity, a solid-state relay connected to the heating strip, and a control module, the constant humidity machine being in communication with the test cavity, the temperature sensor being used to collect real-time environmental temperature information in the test cavity, the humidity collector being used to collect real-time humidity information in the test cavity, the control module being connected to the solid-state relay, the temperature sensor, the constant humidity machine and the humidity collector, the control module being configured to receive the environmental temperature information and compare the environmental temperature information with a preset temperature deviation value to determine whether the environmental temperature information is greater than the temperature deviation value, if yes, a direct current control signal for controlling the solid-state relay to be turned on is generated, the solid-state relay receives the direct current control signal and controls the heating strip to be powered on to heat the blastproof glass, the humidity information is received and compared with a preset humidity deviation value to determine whether the humidity information is greater than the preset humidity deviation value, if yes, a humidity control signal for controlling the constant humidity machine to be turned on is generated, the constant humidity machine receives the humidity control signal and starts the constant humidity machine to reduce the humidity in the test cavity to maintain a constant humidity state in the test cavity.
2. The device for preventing the frosting of the glass of a warm box according to claim 1, characterized in that, The device further comprises an insulating platform arranged in the test cavity and used to carry the battery to be tested, and a support net arranged on the blast door, the support net covering the blastproof glass and being located in the test cavity.
3. The device for preventing the frosting of the glass of a warm box according to claim 1, characterized in that, The device further comprises high-temperature glue connected to the blast door and the blastproof glass respectively and arranged along the circumference of the blastproof glass.
4. The apparatus for preventing frosting of the glass of a warm box according to claim 1, characterized by, The control module comprises a temperature control table or a PLC.
5. The apparatus for preventing the frosting of the glass of a warm box according to claim 1, characterized in that, The device further comprises a tin foil layer wrapped on the heating strip for heat equalization and insulation.
6. The apparatus for preventing frosting of the glass of a warm box according to claim 1, wherein The device further comprises a power supply device electrically connected to the solid-state relay, the solid-state relay being located between the power supply device and the heating strip.
7. A method for preventing the frosting of a glass of a temperature box, characterized by, The method comprises the device for preventing the blastproof glass of a temperature box from frosting according to any one of claims 1 to 6, and further comprises Step S1, placing the battery to be tested on the insulating platform in the test cavity, starting the refrigeration system after closing the blast door to reduce the temperature in the test cavity to a base temperature, the base temperature being not higher than 0℃; Step S2, collecting real-time environmental temperature information in the test cavity by the temperature sensor and collecting real-time humidity information in the test cavity by the humidity collector; Step S3, the control module receives the environmental temperature information and the humidity information respectively; Step S4, the control module compares the ambient temperature information with a preset temperature deviation value to determine whether the ambient temperature information is greater than the temperature deviation value; Step S5, if yes, a direct current control signal for controlling the solid state relay to be turned on is generated, and the solid state relay receives the direct current control signal to control the heating strip to be powered on to heat the explosion-proof glass; Step S6, or the control module compares the humidity information with a preset humidity deviation value to determine whether the humidity information is greater than the preset humidity deviation value; Step S7, if yes, a humidity control signal for controlling the constant humidity machine to be turned on is generated, and the constant humidity machine receives the humidity control signal to maintain a constant humidity state in the test cavity.
8. The method for preventing the frosting of the glass of a warm box according to claim 7, characterized in that, The step S4 comprises: taking a difference value between the ambient temperature information and a basic temperature as a temperature comparison value; comparing the temperature comparison value with the temperature deviation value to determine whether the temperature comparison value is greater than the temperature deviation value; wherein the temperature comparison value is 5℃, and the basic temperature is an initial temperature value at the beginning of the test.
9. The method for preventing the frosting of the glass of a warm box according to claim 7, characterized in that, The step S4 further comprises: if no, a direct current control signal for controlling the solid state relay to be turned on is not generated, and the solid state relay is in an off state to stop the heating strip from heating the explosion-proof glass.
10. The method for preventing the frosting of the glass of a warm box according to claim 7, characterized in that, The step S6 further comprises: if no, a humidity control signal for controlling the constant humidity machine to be turned on is not generated, and the constant humidity machine stops working.