Insulation monitoring device for underwater platform charging

Abstract

The utility model relates to an insulation monitoring device for underwater platform charging. The insulation monitoring device for underwater platform charging comprises a battery pack, a first insulation module, a boost module, a second insulation module and a main control module. The first insulation module is electrically connected with the battery pack; the boosting module is electrically connected with the first insulation module; the second insulating module is electrically connected with the boosting module; the main control module is electrically connected with the first insulation module, the boost module and the second insulation module. According to the scheme provided by the invention, insulation monitoring can be carried out without directly adopting the battery voltage, and the safety risk caused by directly adopting the battery voltage for measurement is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery insulation monitoring technical field, especially a kind of insulation monitoring device for underwater platform charging. BACKGROUND

[0002] Underwater battery pack is located inside underwater platform, when carrying out underwater charging, charging equipment and platform are connected by water-tight connector and water-tight cable and are inserted to realize charging to battery pack.

[0003] In the related art, the traditional insulation monitoring scheme needs to use battery voltage for insulation detection, but there is a certain risk of water leakage at the connection of water-tight cable, and if direct battery voltage is used for detection, there is a certain safety risk in detection if the connector leaks during detection. Therefore, at present, a high-safety insulation monitoring device is urgently needed. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the insufficient in prior art, provide a kind of insulation monitoring device for underwater platform charging, can not directly through battery voltage for insulation monitoring, avoid the security risk brought by direct battery voltage measurement.

[0005] The utility model aims at overcoming the insufficient in prior art, provide a kind of insulation monitoring device for underwater platform charging, can not directly through battery voltage for insulation monitoring, avoid the security risk brought by direct battery voltage measurement.

[0006] The first aspect of the application provides an insulation monitoring device for underwater platform charging, comprising: a battery pack; a first insulation module electrically connected to the battery pack; a voltage boosting module electrically connected to the first insulation module; a second insulation module electrically connected to the voltage boosting module; and a main control module electrically connected to the first insulation module, the voltage boosting module, and the second insulation module.

[0007] The first insulation module includes a voltage measurement unit V1, a resistor Rb1, and a resistor Ra1. The voltage measurement unit V1 is electrically connected to the voltage boosting module. The first end of the resistor Rb1 is electrically connected to the voltage measurement unit V1. The second end of the resistor Rb1 is electrically connected to the shell of the battery pack. The first end of the resistor Ra1 is electrically connected to the voltage measurement unit V1. The second end of the resistor Ra1 is electrically connected to the shell of the battery pack.

[0008] The first insulation module includes a switch K2, a resistor R3, and a resistor R4. The first end of the switch K2 is electrically connected to the voltage measurement unit V1. The second end of the switch K2 is electrically connected to the first end of the resistor R3. The second end of the resistor R3 is electrically connected to the first end of the resistor R4. The second end of the resistor R4 is electrically connected to the shell of the battery pack.

[0009] The first insulation module comprises a switch K1, a resistor R1 and a resistor R2, a first end of the switch K1 is electrically connected with the voltage measurement unit V1, a second end of the switch K2 is electrically connected with a first end of the resistor R1, a second end of the resistor R1 is electrically connected with a first end of the resistor R2, and a second end of the resistor R2 is used for being electrically connected with a shell of the battery pack.

[0010] The second insulation module comprises a voltage measurement unit V2, a resistor Rb2 and a resistor Ra2, the voltage measurement unit V2 is electrically connected with the voltage boost module, a first end of the resistor Rb2 is electrically connected with the voltage measurement unit V2, a second end of the resistor Rb2 is used for being electrically connected with a shell of the underwater platform, a first end of the resistor Ra1 is electrically connected with the voltage measurement unit V1, and a second end of the resistor Ra1 is used for being electrically connected with the shell of the underwater platform.

[0011] The second insulation module further comprises a switch K4, a resistor R7 and a resistor R8, a first end of the switch K4 is electrically connected with the voltage measurement unit V2, a second end of the switch K4 is electrically connected with a first end of the resistor R7, a second end of the resistor R7 is electrically connected with a first end of the resistor R8, and a second end of the resistor R8 is used for being electrically connected with the shell of the underwater platform.

[0012] The second insulation module further comprises a switch K3, a resistor R5 and a resistor R6, a first end of the switch K3 is electrically connected with the voltage measurement unit V2, a second end of the switch K3 is electrically connected with a first end of the resistor R5, a second end of the resistor R5 is electrically connected with a first end of the resistor R6, and a second end of the resistor R6 is used for being electrically connected with the shell of the underwater platform.

[0013] The main control module comprises an MCU unit, a first voltage acquisition unit and a second voltage acquisition unit, the MCU unit is electrically connected with the voltage boost module, a first end of the first voltage acquisition unit is respectively electrically connected with a second end of the resistor R1, a first end of the resistor R2, a second end of the resistor R3 and a first end of the resistor R4, a second end of the first voltage acquisition unit is electrically connected with the MCU unit, a first end of the second voltage acquisition unit is respectively electrically connected with a second end of the resistor R5, a first end of the resistor R6, a second end of the resistor R7 and a first end of the resistor R8, and a second end of the second voltage acquisition unit is electrically connected with the MCU unit.

[0014] The voltage boost module comprises a digital controller and a transformer, a first end of the digital controller is electrically connected with the MCU unit, a second end of the digital controller is electrically connected with the transformer, and the transformer is respectively electrically connected with the voltage measurement unit V1 and the voltage measurement unit V2.

[0015] The charging device is electrically connected with the battery pack.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] The voltage generated by the battery pack is boosted by the voltage boosting module, and an isolated voltage is generated. Due to the presence of the first insulation module and the second insulation module, a leakage current is generated in the loop, and when flowing through the first insulation module and the second insulation module, the resistance of the first insulation module and the second insulation module can be calculated by the master control module, so that insulation monitoring is realized. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiments will be briefly introduced below.

[0019] Figure 1 The functional module diagram of the insulation monitoring device for underwater platform charging in an embodiment of the utility model;

[0020] Figure 2 The circuit diagram of the insulation monitoring device for underwater platform charging in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0022] It should be understood that although the terms "first", "second", "third" and the like can be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0023] Unless otherwise defined, the terms "mounting", "connected", "connecting", "fixed", and the like, are to be construed as broad terms, for example, can be fixed connection, can also be detachable connection or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal connection of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0024] The technical solutions of the embodiments of the application are described in detail below with reference to the drawings.

[0025] Please refer to Figure 1 An insulation monitoring device for charging an underwater platform, comprising: a battery pack 100, a first insulation module 200, a boost module 300, a second insulation module 400 and a master control module 500; the first insulation module 200 is electrically connected with the battery pack 100; the boost module 300 is electrically connected with the first insulation module 200; the second insulation module 400 is electrically connected with the boost module 300; the master control module 500 is electrically connected with the first insulation module 200, the boost module 300 and the second insulation module 400 respectively.

[0026] It should be noted that the battery pack 100 is externally provided with a shell, and then placed in the shell of the underwater platform. The boost module 300 is used to generate a constant isolation voltage for the battery pack, the first insulation module 200 and the second insulation module 400 are both resistors, and the master control module 500 is used to control the boost module 300. Further, the boost module 300 boosts the voltage generated by the battery pack 100 and generates an isolation voltage. Due to the existence of the first insulation module 200 and the second insulation module 400, a leakage current will be generated in the loop, and when flowing through the first insulation module 200 and the second insulation module 400, the resistance of the first insulation module 200 and the second insulation module 400 can be calculated by the master control module, thereby realizing insulation monitoring.

[0027] It should be further noted that the charging device of the present application is on land, and the charging device is electrically connected with the battery pack 100 through a water-proof cable.

[0028] Please refer to Figure 2 In an embodiment, the first insulation module 200 comprises a voltage measurement unit V1, a resistor Rb1 and a resistor Ra1, the voltage measurement unit V1 is electrically connected with the boost module 300, the first end of the resistor Rb1 is electrically connected with the voltage measurement unit V1, the second end of the resistor Rb1 is used to be electrically connected with the shell of the battery pack 100, the first end of the resistor Ra1 is electrically connected with the voltage measurement unit V1, and the second end of the resistor Ra1 is used to be electrically connected with the shell of the battery pack 100.

[0029] It should be noted that the voltage measuring unit V1 can be a voltmeter for measuring the voltage of the battery pack. The resistance Rb1 and the resistance Ra1 constitute an equivalent resistance between the battery pack 100 and the shell of the battery pack 100, that is, the insulation condition between the battery pack 100 and the shell of the battery pack 100 can be known by monitoring the resistance values of the resistance Rb1 and the resistance Ra1.

[0030] Please refer to Figure 2 In an embodiment, the first insulation module 200 includes a switch K2, a resistance R3 and a resistance R4, the first end of the switch K2 is electrically connected with the voltage measuring unit V1, the second end of the switch K2 is electrically connected with the first end of the resistance R3, the second end of the resistance R3 is electrically connected with the first end of the resistance R4, and the second end of the resistance R4 is used for being electrically connected with the shell of the battery pack 100.

[0031] It should be noted that the resistance R3 and the resistance R4 are both voltage dividing resistors.

[0032] Please refer to Figure 2 In an embodiment, the first insulation module 200 includes a switch K1, a resistance R1 and a resistance R2, the first end of the switch K1 is electrically connected with the voltage measuring unit V1, the second end of the switch K2 is electrically connected with the first end of the resistance R1, the second end of the resistance R1 is electrically connected with the first end of the resistance R2, and the second end of the resistance R2 is used for being electrically connected with the shell of the battery pack 100.

[0033] It should be noted that the resistance R1 and the resistance R2 are both voltage dividing resistors.

[0034] Please refer to Figure 2 In an embodiment, the second insulation module 400 includes a voltage measuring unit V2, a resistance Rb2 and a resistance Ra2, the voltage measuring unit V2 is electrically connected with the boost module 300, the first end of the resistance Rb2 is electrically connected with the voltage measuring unit V2, the second end of the resistance Rb2 is used for being electrically connected with the shell of the underwater platform, the first end of the resistance Ra1 is electrically connected with the voltage measuring unit V1, and the second end of the resistance Ra1 is used for being electrically connected with the shell of the underwater platform.

[0035] It should be noted that the voltage measuring unit V2 can be a voltmeter, and the resistance Rb2 and the resistance Ra2 constitute an equivalent resistance between the water-tight cable and the shell of the underwater platform, that is, the insulation condition between the water-tight cable and the shell of the underwater platform can be known by monitoring the resistance values of the resistance Rb2 and the resistance Ra1.

[0036] Please refer to Figure 2In an embodiment, the second insulation module 400 further comprises a switch K4, a resistor R7 and a resistor R8, a first end of the switch K4 is electrically connected with the voltage measurement unit V2, a second end of the switch K4 is electrically connected with a first end of the resistor R7, a second end of the resistor R7 is electrically connected with a first end of the resistor R8, and a second end of the resistor R8 is used to be electrically connected with the shell of the underwater platform.

[0037] It should be noted that the resistor R7 and the resistor R8 are both voltage dividing resistors.

[0038] Please refer to Figure 2 In an embodiment, the second insulation module 400 further comprises a switch K3, a resistor R5 and a resistor R6, a first end of the switch K3 is electrically connected with the voltage measurement unit V2, a second end of the switch K3 is electrically connected with a first end of the resistor R5, a second end of the resistor R5 is electrically connected with a first end of the resistor R6, and a second end of the resistor R6 is used to be electrically connected with the shell of the underwater platform.

[0039] It should be noted that the resistor R5 and the resistor R6 are both voltage dividing resistors.

[0040] Please refer to Figure 2 In an embodiment, the main control module 500 comprises an MCU unit, a first voltage acquisition unit and a second voltage acquisition unit, the MCU unit is electrically connected with the boost module, a first end of the first voltage acquisition unit is respectively electrically connected with a second end of the resistor R1, a first end of the resistor R2, a second end of the resistor R3 and a first end of the resistor R4, a second end of the first voltage acquisition unit is electrically connected with the MCU unit, a first end of the second voltage acquisition unit is respectively electrically connected with a second end of the resistor R5, a first end of the resistor R6, a second end of the resistor R7 and a first end of the resistor R8, and a second end of the second voltage acquisition unit is electrically connected with the MCU unit.

[0041] It should be noted that the MCU unit is a chip, and the model that can be used is MSP430G2452. The first voltage acquisition unit is used to acquire the voltage of the resistor R1 and the resistor R2, and the voltage of the resistor R3 and R4, and the second voltage acquisition unit is used to acquire the voltage of the resistor R5 and the resistor R6, and the voltage of the resistor R7 and R8.

[0042] Please refer to Figure 2 In an embodiment, the boost module 300 comprises a digital controller and a transformer, a first end of the digital controller is electrically connected with the MCU unit, a second end of the digital controller is electrically connected with the transformer, and the transformer is respectively electrically connected with the voltage measurement unit V1 and the voltage measurement unit V2.

[0043] It should be noted that the model of the digital controller can be a flyback DC-DC conversion circuit, which compares the set output voltage target value with the actual feedback output voltage value, and controls the on and off time of the switch tube by adjusting the duty cycle of the PWM signal. When the switch tube is turned on, the electrical energy is stored in the transformer; when it is turned off, the transformer transfers energy to the secondary side, realizing voltage step-up and isolation.

[0044] The circuit principle of the present application is described below:

[0045] The digital controller drives the transformer to step up the battery pack voltage and generate an isolated voltage, and the output isolated voltage can be adjusted through the transformer to ensure continuous constant output. Then, the MCU unit controls the closing of switches K1 and K2, respectively. Due to the existence of resistors Ra1 and Rb1, a leakage current will be generated between the positive electrode of the battery pack 100 and the shell of the battery pack 100, and a voltage division will be generated when flowing through resistors R1 and R2 and resistors R3 and R4. The resistance values of resistors Ra1 and Rb1 can be calculated by the bridge method to determine whether they meet the preset standard, thereby realizing the insulation resistance monitoring of the positive and negative electrodes of the battery pack 100 and the shell of the battery pack 100.

[0046] Then, the MCU unit controls the closing of switches K3 and K4, respectively. Due to the existence of resistors Ra2 and Rb2, a leakage current will be generated between the positive electrode of the battery pack 100 and the shell of the battery pack 100, and a voltage division will be generated when flowing through resistors R5 and R6 and resistors R7 and R8. The resistance values of resistors Ra2 and Rb2 can be calculated by the bridge method to determine whether they meet the preset standard, thereby realizing the insulation resistance monitoring of the positive and negative electrodes of the water-proof cable and the shell of the platform. The above-mentioned preset standard can be the national standard, or it can be set according to the actual situation.

[0047] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above-described embodiments, the description of each embodiment focuses on different aspects, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily required by the present application. In addition, it can be understood that the steps in the method embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs, and the modules in the device embodiments of the present application can be combined, divided and reduced according to actual needs.

[0048] Having described various embodiments of the application, it is to be understood that the above description is meant not to limit and not to encompass all of the possible embodiments. Many modifications and variations of this application can be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. It is intended that the scope of the application be defined by the scope of the patent and by the claims as allowed by the patent office, which can include adaptations based on the description, equivalents, and / or substitutions of elements individually or collectively to the entire disclosure.

Claims

1. An insulation monitoring device for underwater platform charging, characterized in that, include: Battery pack; The first insulating module is electrically connected to the battery pack; The boost module is electrically connected to the first insulating module; The second insulation module is electrically connected to the boost module; The main control module is electrically connected to the first insulation module, the boost module, and the second insulation module, respectively.

2. The insulation monitoring device for underwater platform charging according to claim 1, characterized in that, The first insulation module includes a voltage measurement unit V1, a resistor Rb1, and a resistor Ra1. The voltage measurement unit V1 is electrically connected to the boost module. The first end of the resistor Rb1 is electrically connected to the voltage measurement unit V1, and the second end of the resistor Rb1 is used to be electrically connected to the casing of the battery pack. The first end of the resistor Ra1 is electrically connected to the voltage measurement unit V1, and the second end of the resistor Ra1 is used to be electrically connected to the casing of the battery pack.

3. The insulation monitoring device for underwater platform charging according to claim 2, characterized in that, The first insulation module includes a switch K2, a resistor R3, and a resistor R4. The first end of the switch K2 is electrically connected to the voltage measurement unit V1, the second end of the switch K2 is electrically connected to the first end of the resistor R3, the second end of the resistor R3 is electrically connected to the first end of the resistor R4, and the second end of the resistor R4 is used to be electrically connected to the casing of the battery pack.

4. The insulation monitoring device for underwater platform charging according to claim 3, characterized in that, The first insulation module includes a switch K1, a resistor R1 and a resistor R2. The first end of the switch K1 is electrically connected to the voltage measuring unit V1. The second end of the switch K2 is electrically connected to the first end of the resistor R1. The second end of the resistor R1 is electrically connected to the first end of the resistor R2. The second end of the resistor R2 is used to be electrically connected to the outer casing of the battery pack.

5. The insulation monitoring device for underwater platform charging according to claim 4, characterized in that, The second insulation module includes a voltage measuring unit V2, a resistor Rb2, and a resistor Ra1. The voltage measuring unit V2 is electrically connected to the boost module. The first end of the resistor Rb2 is electrically connected to the voltage measuring unit V2, and the second end of the resistor Rb2 is used to be electrically connected to the outer shell of the underwater platform. The first end of the resistor Ra1 is electrically connected to the voltage measuring unit V1, and the second end of the resistor Ra1 is used to be electrically connected to the outer shell of the underwater platform.

6. The insulation monitoring device for underwater platform charging according to claim 5, characterized in that, The second insulation module also includes a switch K4, a resistor R7, and a resistor R8. The first end of the switch K4 is electrically connected to the voltage measurement unit V2, the second end of the switch K4 is electrically connected to the first end of the resistor R7, the second end of the resistor R7 is electrically connected to the first end of the resistor R8, and the second end of the resistor R8 is used to electrically connect to the outer shell of the underwater platform.

7. The insulation monitoring device for underwater platform charging according to claim 6, characterized in that, The second insulation module also includes a switch K3, a resistor R5, and a resistor R6. The first end of the switch K3 is electrically connected to the voltage measuring unit V2, the second end of the switch K3 is electrically connected to the first end of the resistor R5, the second end of the resistor R5 is electrically connected to the first end of the resistor R6, and the second end of the resistor R6 is used to electrically connect to the outer shell of the underwater platform.

8. The insulation monitoring device for underwater platform charging according to claim 7, characterized in that, The main control module includes an MCU unit, a first voltage acquisition unit, and a second voltage acquisition unit. The MCU unit is electrically connected to the boost module. The first terminal of the first voltage acquisition unit is electrically connected to the second terminals of resistors R1, R2, R3, and R4, respectively. The second terminal of the first voltage acquisition unit is electrically connected to the MCU unit. The first terminal of the second voltage acquisition unit is electrically connected to the second terminals of resistors R5, R6, R7, and R8, respectively. The second terminal of the second voltage acquisition unit is electrically connected to the MCU unit.

9. The insulation monitoring device for underwater platform charging according to claim 8, characterized in that, The boost module includes a digital controller and a transformer. The first terminal of the digital controller is electrically connected to the MCU unit, and the second terminal of the digital controller is electrically connected to the transformer. The transformer is electrically connected to the voltage measurement unit V1 and the voltage measurement unit V2, respectively.

10. The insulation monitoring device for underwater platform charging according to claim 1 or 8, characterized in that, It also includes a charging device that is electrically connected to the battery pack.

Images