CN212486162U - Multistage excess temperature protection trades electric cabinet - Google Patents
Multistage excess temperature protection trades electric cabinet Download PDFInfo
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- CN212486162U CN212486162U CN202021295044.9U CN202021295044U CN212486162U CN 212486162 U CN212486162 U CN 212486162U CN 202021295044 U CN202021295044 U CN 202021295044U CN 212486162 U CN212486162 U CN 212486162U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Abstract
The utility model relates to a multistage excess temperature protection cabinet of changing electricity, include: the charging system comprises an alternating current input end, a power conversion unit, a main control module, a plurality of charging modules, a plurality of charging control modules, a first over-temperature protection module, a plurality of second over-temperature protection modules and a plurality of third over-temperature protection modules; the first over-temperature protection module is respectively connected with the alternating current input end and the plurality of charging modules, and is switched off when the first environment temperature is higher than a first preset temperature, or is switched on when the first environment temperature is not higher than the first preset temperature; after any second over-temperature protection module and any third over-temperature protection module are connected in series, one end of each second over-temperature protection module is connected with the power supply conversion unit, the other end of each second over-temperature protection module is connected with the main control module or any charging control module, the second over-temperature protection module is turned off when the second ambient temperature is higher than the second preset temperature, or is turned on when the second ambient temperature is higher than the third preset temperature, and the third over-temperature protection module is turned off when the third ambient temperature is higher than the third preset temperature; the second preset temperature is higher than the first preset temperature and lower than the third preset temperature. Implement the utility model discloses can realize safe and reliable's excess temperature protection more.
Description
Technical Field
The utility model relates to a trade electric cabinet technical field, more specifically say, relate to a multistage excess temperature protection trades electric cabinet.
Background
The electric vehicle charging and power-exchanging cabinet is a battery sharing system which is greatly demanded in the current civil market and used for a motor vehicle rider to quickly replace an undervoltage battery with a full-charge battery. The internal working principle is that alternating current commercial power is introduced, the charging circuit converts the alternating current commercial power into required voltage to charge a battery, and the alternating current commercial power is converted into lower working voltage to supply power to each internal control system. In order to meet the market requirements, one power exchange cabinet is generally provided with a plurality of independent cabin bodies, each cabin body can be used for placing a battery and can be combined with a main control unit to charge and exchange the batteries, and the safety performance requirement is high because the power exchange cabinet can realize the function of simultaneously charging a plurality of high-capacity batteries. In addition, for convenience of battery replacement, the battery replacement cabinet is usually installed in an open-air environment such as a doorway of a residential area and sometimes exposed to burning sun. The current commonly used battery replacement batteries adopt lithium batteries. The lithium battery is very sensitive to high-temperature charging and discharging, explosion accidents are easily caused, and the application environment of the battery replacement cabinet determines that high temperature is inevitably generated occasionally, particularly under the condition of accidents such as fire disasters and the like. How to guarantee the normal work of the power changing cabinet system under the condition that the temperature allows, and can quickly cut off the power supply system under the condition that the temperature is too high to carry out over-temperature protection, thereby avoiding the situation from further expanding, and being a key step for ensuring the safety of the power changing cabinet system.
In some aspects, it can provide an audible and visual alarm to indicate that power is turned off manually. Although easy to implement, the site must be attended by people from time to time, and after an accident, the approach of people to the power change cabinet may present a potential safety risk. In some other schemes, the temperature is acquired and judged in real time through an internal embedded system, if the temperature exceeds a critical value, a power supply is cut off in a software control mode, and power supply can be recovered after the temperature is normal. Although the normal over-temperature protection function of the software control circuit can be ensured when the temperature does not exceed the normal working range of the software control circuit, when the temperature exceeds the working range of the software control circuit, the software control circuit is in an abnormal working state, and the over-temperature protection of the whole power transformation cabinet cannot be provided.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned technical defect, a multistage excess temperature protection trades electric cabinet is provided.
The utility model provides a technical scheme that its technical problem adopted is: a multi-stage over-temperature protection electricity exchange cabinet is constructed, and comprises: the charging control system comprises an alternating current input end, a power conversion unit connected with the alternating current input end, a plurality of charging modules, a plurality of charging control modules respectively and correspondingly connected with the plurality of charging modules, a main control module connected with the charging control modules, a first over-temperature protection module, a plurality of second over-temperature protection modules and a plurality of third over-temperature protection modules;
the first over-temperature protection module is respectively connected with the alternating current input end and the plurality of charging modules, and is turned off when a first environment temperature is higher than a first preset temperature and is turned on when the first environment temperature is lower than or equal to the first preset temperature;
after any one of the second over-temperature protection modules and any one of the third over-temperature protection modules are connected in series, one end of each of the second over-temperature protection modules is connected with the power conversion unit, the other end of each of the second over-temperature protection modules is connected with the main control module or any one of the charging control modules, the second over-temperature protection module is turned off when the second ambient temperature is higher than a second preset temperature, the second over-temperature protection module is turned on when the second ambient temperature is lower than or equal to the second preset temperature, and the third over-temperature protection module is turned off when the third ambient temperature is higher than a third preset temperature;
the second preset temperature is greater than the first preset temperature and less than the third preset temperature.
The utility model discloses a multistage excess temperature protection electricity-exchanging cabinet, which also comprises a temperature detection module which is arranged at the corresponding position of the electricity-exchanging cabinet and is used for acquiring the first environment temperature of the electricity-exchanging cabinet;
the main control module is connected with the temperature detection module and the first over-temperature protection module and used for receiving the first environment temperature to control the first over-temperature protection module to be switched off or switched on.
Preferably, the temperature detection module includes a plurality of temperature sensors respectively disposed at different positions of the power distribution cabinet, and the temperature detection module obtains the first ambient temperature according to detection values of the plurality of temperature sensors.
Preferably, the temperature sensors correspond to the charging modules one to one, and the temperature sensors and the corresponding charging modules are arranged on the same PCB.
Preferably, the first over-temperature protection module comprises a contactor, an input contact end of the contactor is connected with the alternating current input end, an output contact end of the contactor is connected with the power conversion unit, one end of a coil of the contactor is connected with the alternating current input end, and the other end of the coil of the contactor is connected with the main control module.
Preferably, the second and/or third over-temperature protection modules are respectively arranged on the same PCB board as the corresponding main control module or the charging control module.
Preferably, the second ambient temperature is an ambient temperature corresponding to the PCB, and/or the third ambient temperature is an ambient temperature corresponding to the PCB.
Preferably, the utility model discloses a multistage excess temperature protection cabinet of changing electricity, still including locating a plurality of storehouses of changing electricity in the cabinet of changing electricity, charge control module and/or the module of charging correspond respectively set up in change in the storehouse, second excess temperature protection module and/or third excess temperature protection module respectively with correspond charge control module or the module of charging sets up in same storehouse of changing electricity.
Preferably, the second over-temperature protection module is an automatic recovery module, and the third over-temperature protection module is a manual recovery module.
Preferably, the second over-temperature protection module is a recoverable temperature controller, and the third over-temperature protection module is a kick type temperature controller.
Implement the utility model discloses a multistage excess temperature protection switch cabinet has following beneficial effect: can realize safer and more reliable over-temperature protection.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic structural view of a first embodiment of a multistage over-temperature protection power exchange cabinet of the present invention;
fig. 2 is a schematic structural view of a second embodiment of the multistage overheat protection power exchange cabinet of the present invention;
fig. 3 is a schematic circuit diagram of an embodiment of the multi-stage over-temperature protection power exchange cabinet of the present invention;
fig. 4 is a schematic diagram of a partial circuit of an embodiment of the multi-stage over-temperature protection power conversion cabinet of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the first embodiment of the multistage overheat protection power distribution cabinet of the present invention includes: the charging system comprises an alternating current input end 110, a power conversion unit 120 connected with the alternating current input end 110, a plurality of charging modules 130, a plurality of charging control modules 151 correspondingly connected with the plurality of charging modules 130 respectively, a main control module 141 connected with the charging control modules 151, a first over-temperature protection module 161, a plurality of second over-temperature protection modules 162 and a plurality of third over-temperature protection modules 163; the first over-temperature protection module 161 is respectively connected to the ac input terminal 110 and the plurality of charging modules 130, and is turned off when the first ambient temperature is higher than a first preset temperature and turned on when the first ambient temperature is lower than or equal to the first preset temperature; after any second over-temperature protection module 162 and any third over-temperature protection module 163 are connected in series, one end of the second over-temperature protection module 162 is connected with the power conversion unit 120, and the other end of the second over-temperature protection module is connected with the main control module 141 or any charging control module 151, the second over-temperature protection module 162 is turned off when the second ambient temperature is higher than the second preset temperature, and is turned on when the second ambient temperature is lower than or equal to the second preset temperature, and the third over-temperature protection module 163 is turned off when the third ambient temperature is higher than the third preset temperature; the second preset temperature is higher than the first preset temperature and lower than the third preset temperature.
Specifically, the commercial power input supplies power to the power conversion cabinet through the ac input terminal 110, and the commercial power input can be understood as strong power input. The strong current input provides power input to each charging module 130 through the ac input terminal 110, and each charging module 130 converts the ac input provided by the ac input terminal 110 into power to charge the rechargeable battery connected to the charging module 130. Each charging module 130 is provided with a corresponding charging control module 151, and the charging operation of the charging module 130 can be controlled by the charging control module 151. Each charging control module 151 is connected to the main control module 141, and the operating state of each charging control module 151 is controlled by the main control module 141. It can be understood that the charging module 130 includes a plurality of charging positions, which can be set at charging positions of the battery replacement batteries corresponding to the battery replacement cabinet, and the charging control module 151 also includes a plurality of charging positions, which are respectively set corresponding to the charging module 130. When the charging station is inserted into the rechargeable battery, the charging control module 151 controls the charging module 130 to charge the rechargeable battery when it recognizes that the rechargeable battery is normally accessed. The ac power input from the ac input terminal 110 is converted from a high voltage to a low voltage by the power conversion unit 120, and the converted low voltage is used to power each charging control module 151 and the main control module 141, so that the main control module 141 and each charging control module 151 can be powered on and operated respectively. Each of the charging control modules 151 and the main control module 141 is connected to the power conversion unit 120 through a second excess temperature protection module 162 and a third excess temperature protection module 163 connected in series, and the second excess temperature protection module 162 and the third excess temperature protection module 163 monitor the ambient temperature corresponding to each of the charging control modules 151 or the main control module 141 and turn on or off according to the ambient temperature to realize power-on and power-off of each of the charging control modules 151 and a final control process of the charging module 130, wherein the second excess temperature protection module 162 is turned off when the second ambient temperature is higher than a second preset temperature, is turned on when the second ambient temperature is lower than or equal to the second preset temperature, and the third excess temperature protection module 163 is turned off when the third ambient temperature is higher than a third preset temperature; the second preset temperature is less than the third preset temperature. All the charging modules 130 are connected to the ac input terminal 110 through the first over-temperature protection module 161, that is, the first over-temperature protection module 161 provides over-temperature protection for the strong current input of the ac input terminal 110, wherein the first over-temperature protection module 161 is turned off when the ambient temperature, that is, the first ambient temperature, is higher than a first preset temperature, and is turned on when the first ambient temperature is lower than or equal to the first preset temperature; the first preset temperature is set to a minimum, which is less than the second preset temperature. That is, when the corresponding ambient temperature is lower than the second preset temperature, the second over-temperature protection module 162 and the third over-temperature protection module 163 are both in a conducting state, each charging control module 151 and the main control module 141 are both powered on and normally operate, and at this time, if the ambient temperature is lower than the first preset temperature, each charging module 130 is also in a normal operating state, and the whole battery replacement cabinet normally operates. When the ambient temperature is higher than the first preset temperature, each charging control module 151 and the main control module 141 normally work at this time, the charging module 130 is disconnected, and the working state of each charging module 130 can be acquired through the charging control module 151 and the main control module 141, so that the internal working state of the power exchange cabinet is monitored. Once the ambient temperature is reduced to be lower than the first preset temperature, the first over-temperature protection module 161 is turned on, the charging module 130 is normally powered on, and the corresponding charging control module 151 can control the charging module 130 to normally operate. Namely, in the over-temperature protection, the first over-temperature protection is carried out on the strong electric circuit so as to protect the whole power exchange cabinet. When the ambient temperature is higher than the second preset temperature and lower than the third preset temperature, the second over-temperature protection module 162 is in an off state, the third over-temperature protection module 163 is in an on state, at this time, each of the charging control modules 151, the main control module 141, and the charging module 130 belong to the off state, and at this time, the battery replacement cabinet is in the over-temperature protection state. And when the temperature is recovered to be lower than the second preset temperature, the second process protection module can recover to a conducting state, and the battery changing cabinet is awakened to be in a working state so as to carry out corresponding work. I.e., the second over-temperature protection module 162, which may turn off or restore the on state according to the temperature. When the ambient temperature is higher than the third preset temperature, the second process module and the third over-temperature protection module 163 are both in an off state, at this time, each of the charging control modules 151, the main control module 141, and the charging module 130 all belong to the off state, and at this time, the battery replacement cabinet is in the over-temperature protection state. At this time, no matter how the temperature is recovered, the third over-temperature protection module 163 does not recover to be turned on, and at this time, the whole circuit is turned off and does not work.
Optionally, the multi-stage over-temperature protection power exchange cabinet of the present invention further includes a temperature detection module disposed at a corresponding position of the power exchange cabinet for obtaining a first ambient temperature of the power exchange cabinet; the main control module is connected to the temperature detection module and the first over-temperature protection module 161, and is configured to receive the first ambient temperature to control the first over-temperature protection module 161 to turn off or turn on. That is, can detect the first ambient temperature of the cabinet that trades electricity through the temperature detection module, its data and position through rationally setting up the temperature detection module acquire corresponding detection temperature to obtain corresponding first ambient temperature according to the detection temperature, main control module 141 acquires this first ambient temperature and regards this first ambient temperature as first process protection module's trigger condition, and through main control module 141 according to the first ambient temperature control first excess temperature protection module 161 that acquires turn-off or switch on.
Optionally, the temperature detection module includes a plurality of temperature sensors respectively arranged at different positions of the power exchange cabinet, and the temperature detection module acquires the first ambient temperature according to detection values of the plurality of temperature sensors. That is, the temperature of the power distribution cabinet can be obtained by the plurality of temperature sensors, and the detected temperatures of the plurality of temperature sensors can be processed in a common data processing manner to obtain the first ambient temperature, for example, the first ambient temperature obtains a maximum value, a minimum value or an average value.
In one embodiment, the temperature sensors correspond to the charging modules 130 one by one, and the temperature sensors and the corresponding charging modules 130 are disposed on the same PCB. Optionally, the temperature sensors may be disposed in one-to-one correspondence with the charging modules 130, and the two are disposed on the same PCB, that is, the charging module 130 is not an independent PCB, and each independent PCB is provided with a corresponding temperature sensor for detecting an ambient temperature corresponding to the operation of the charging module 130, so that the over-temperature protection of the charging module 130 can be better achieved.
As shown in fig. 2 and fig. 3, the second and/or third over-temperature protection modules 162 and 163 are disposed on the same PCB board as the corresponding main control module 141 or charging control module 151, respectively. In an embodiment, the second over-temperature protection module 162 and the corresponding main control module 141 or the corresponding charging control module 151 are disposed on the same PCB, that is, it is understood that each charging control module 151 is an independent PCB 150, the main control module 141 is also an independent PCB 140, and the second over-temperature protection modules 162 are respectively disposed on the PCBs. Further, through the above arrangement, the temperature detected by the second over-temperature protection module 162, that is, the second ambient temperature, may be the ambient temperature corresponding to the PCB.
In another embodiment, the third over-temperature protection module 163 may be disposed on the same PCB board as the main control module 141 corresponding thereto or the charging control module 151 corresponding thereto. That is, it can be understood that each of the charging control modules 151 is an independent PCB 150, the main control module 141 is also an independent PCB 140, and the third over-temperature protection modules 163 are correspondingly disposed on the PCBs, respectively. With this arrangement, the temperature detected by the third over-temperature protection module 163, that is, the third ambient temperature, may be the ambient temperature corresponding to the PCB.
In another embodiment, both the second over-temperature protection module 162 and the third over-temperature protection module 163 may be disposed on the same PCB as the corresponding charging control module 151 or the main control module 141. Through this setting, the respective ambient temperatures detected by the second and third over-temperature protection modules 162 and 163 may be the ambient temperatures corresponding to the PCB.
Optionally, in an embodiment, the utility model discloses a multistage excess temperature protection trades electric cabinet is including locating a plurality of electric storehouses that trade on the electric cabinet body, and the control module 151 and/or the module 130 that charges correspond respectively and set up in trading the electric storehouse, and second excess temperature protection module 162 and/or third excess temperature protection module 163 set up in same electric storehouse with the control module 151 that charges or the module 130 that charges that correspond respectively. Specifically, the charging module 130 corresponds to the battery replacing bin, the charging control module 151 also corresponds to the battery replacing bin, the second over-temperature protection module 162 and/or the third over-temperature protection module 163 can respectively correspond to the battery replacing bin through corresponding circuits, the detected ambient temperature corresponds to the battery replacing bin temperature, and the temperature condition of the work of each battery replacing bin can be well monitored so as to realize the over-temperature protection of each battery replacing bin.
As shown in fig. 3, in an embodiment, the first over-temperature protection module 161 includes a contactor QC1, an input contact terminal of the contactor QC1 is connected to the ac input terminal 110, an output contact terminal of the contactor QC1 is connected to the power conversion unit 120, and a coil of the contactor QC1 has one end connected to the ac input terminal 110 and the other end connected to the main control module 141. The contact end of the contactor QC1 comprises an input contact end and an output contact end, when the power exchange cabinet is in a normal working state, the main control module 141 controls the coil of the contactor QC1 to be powered on and conducted, the contact sheet of the contactor QC1 is closed, the input contact end and the output contact end of the contactor are conducted, and alternating current input passes through the connection charging module 130 of the contactor QC 1. When the power exchange cabinet is in an over-temperature state, namely the ambient temperature exceeds a first preset temperature, the main control module 141 controls the coil of the contactor QC1 to be powered off, the contact sheet contacting with the QC1 is restored to a normally open state, the input contact end and the output contact end are in a disconnected state, and the charging module 130 is powered off at the moment to perform over-temperature protection on the charging module 130. Wherein each charging module 130 can be connected to the ac input 110 via a connection bank. And an independent switch is arranged at the output end of the L-line connection end of the line bank, the switch corresponds to the charging modules 130, and independent electrification of each charging module 130 can be independently controlled through the switch.
Optionally, in an embodiment, the second over-temperature protection module 162 is an automatic recovery module, and the third over-temperature protection module 163 is a manual recovery module. That is, the second over-temperature protection module 162 is an automatic recovery module that can be turned off when the second ambient temperature is higher than the second preset temperature and turned on automatically when the second ambient temperature is lower than or equal to the second preset temperature. As shown in fig. 4, a recoverable temperature controller TM2 may be specifically adopted, and may correspond to a specific device model TM22/070a5, where the overtemperature protection point of the device is 70 ℃, and the device is turned off when the detected temperature, i.e., the corresponding second ambient temperature, is higher than 70 ℃, and can automatically recover when the detected temperature, i.e., the second ambient temperature, is lower than or equal to 70 ℃. The third over-temperature protection module 163 is a manual recovery module, which is turned off when the third ambient temperature is higher than the third preset temperature, but cannot be automatically recovered when it is turned off, and it needs to be manually recovered when the power transformation cabinet is determined to be in a normal state. Specifically, a kick type temperature controller TM1 can be adopted, the model of a corresponding specific device can be TM22/080M5, the over-temperature protection point of the device is 80 ℃, and when the detected temperature, namely the third environment temperature, is higher than 80 ℃, the device is turned off, and can be manually triggered to reset and restore to be turned on. The recoverable temperature controller TM2 and the kick temperature controller TM1 are connected in series and then connected to a power input terminal of the main control module 141 or the charging control module 151.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. The utility model provides a multistage excess temperature protection cabinet of changing electricity which characterized in that includes: the charging control system comprises an alternating current input end, a power conversion unit connected with the alternating current input end, a plurality of charging modules, a plurality of charging control modules respectively and correspondingly connected with the plurality of charging modules, a main control module connected with the charging control modules, a first over-temperature protection module, a plurality of second over-temperature protection modules and a plurality of third over-temperature protection modules;
the first over-temperature protection module is respectively connected with the alternating current input end and the plurality of charging modules, and is turned off when a first environment temperature is higher than a first preset temperature and is turned on when the first environment temperature is lower than or equal to the first preset temperature;
after any one of the second over-temperature protection modules and any one of the third over-temperature protection modules are connected in series, one end of each of the second over-temperature protection modules is connected with the power conversion unit, the other end of each of the second over-temperature protection modules is connected with the main control module or any one of the charging control modules, the second over-temperature protection module is turned off when the second ambient temperature is higher than a second preset temperature, the second over-temperature protection module is turned on when the second ambient temperature is lower than or equal to the second preset temperature, and the third over-temperature protection module is turned off when the third ambient temperature is higher than a third preset temperature;
the second preset temperature is greater than the first preset temperature and less than the third preset temperature.
2. The multi-stage over-temperature protection power exchange cabinet according to claim 1, further comprising a temperature detection module disposed at a position corresponding to the power exchange cabinet and configured to obtain a first ambient temperature of the power exchange cabinet;
the main control module is connected with the temperature detection module and the first over-temperature protection module and used for receiving the first environment temperature to control the first over-temperature protection module to be switched off or switched on.
3. The multi-stage over-temperature protection power exchange cabinet according to claim 2, wherein the temperature detection module comprises a plurality of temperature sensors respectively disposed at different positions of the power exchange cabinet, and the temperature detection module obtains the first ambient temperature according to detection values of the plurality of temperature sensors.
4. The multi-stage over-temperature protection and power exchange cabinet according to claim 3, wherein the temperature sensors are in one-to-one correspondence with the charging modules, and the temperature sensors and the corresponding charging modules are arranged on the same PCB.
5. The multi-stage over-temperature protection and power conversion cabinet according to claim 2, wherein the first over-temperature protection module comprises a contactor, an input contact end of the contactor is connected with the alternating current input end, an output contact end of the contactor is connected with the power conversion unit, one end of a coil of the contactor is connected with the alternating current input end, and the other end of the coil of the contactor is connected with the main control module.
6. The multi-stage overheat protection power exchange cabinet according to claim 1, wherein the second overheat protection module and/or the third overheat protection module are respectively disposed on the same PCB as the corresponding main control module or the charging control module.
7. The multi-stage over-temperature protection and power exchange cabinet according to claim 6, wherein the second ambient temperature is an ambient temperature corresponding to the PCB, and/or the third ambient temperature is an ambient temperature corresponding to the PCB.
8. The multi-stage over-temperature protection power exchange cabinet according to claim 1, further comprising a plurality of power exchange cabins arranged in the power exchange cabinet, wherein the charging control modules and/or the charging modules are respectively and correspondingly arranged in the power exchange cabins, and the second over-temperature protection module and/or the third over-temperature protection module are respectively and correspondingly arranged in the same power exchange cabin with the charging control module or the charging module.
9. The multi-stage overheat protection power exchange cabinet according to claim 1, wherein the second overheat protection module is an automatic recovery module, and the third overheat protection module is a manual recovery module.
10. The multi-stage over-temperature protection and power exchange cabinet according to claim 9, wherein the second over-temperature protection module is a recoverable temperature controller, and the third over-temperature protection module is a kick type temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021295044.9U CN212486162U (en) | 2020-07-02 | 2020-07-02 | Multistage excess temperature protection trades electric cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021295044.9U CN212486162U (en) | 2020-07-02 | 2020-07-02 | Multistage excess temperature protection trades electric cabinet |
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| CN212486162U true CN212486162U (en) | 2021-02-05 |
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| CN202021295044.9U Active CN212486162U (en) | 2020-07-02 | 2020-07-02 | Multistage excess temperature protection trades electric cabinet |
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