Double-circuit switching starting power supply of engine

Abstract

An engine double-circuit switching starting power supply is characterized in that a battery control cabinet comprises a switching power supply, a common battery charger, a standby battery charger and a standby battery voltage detection controller; a change-over switch and an emergency stop button are arranged in the battery control cabinet; alternating current is introduced into the battery control cabinet to be connected with the circuit breaker QF1, the circuit breaker QF1 is connected with the switching power supply through the fuse FU1, the switching power supply is connected into the control loop, the circuit breaker QF1 is electrically connected with the common starting battery charger through the fuse FU2, the circuit breaker QF1 is electrically connected with the standby starting battery charger through the fuse FU3, and the standby starting battery charger is electrically connected with the control loop through the fuse FU1. And the circuit breaker QF1 is connected with a common starting battery voltage detection controller through a fuse FU4. When the starting engine cannot be normally started due to the fact that the common starting battery of the engine starting engine is lack of electricity, the standby starting battery can be switched in time, and normal starting of the starting engine is guaranteed. And the structure is simple and stable, the safety and reliability are greatly improved, and reliable guarantee is provided for the use requirements of users on important equipment.

Description

Technical Field

[0001] The utility model relates to an engine starting power supply and its guarantee, in particular to a dual-circuit starting power supply for an engine of a fire pump station. Background Art

[0002] The engines are mainly gasoline engines and diesel engines, which are widely used in vehicles, ships, fire pumps, generator sets and other fields. The engine starter is mainly composed of a starter, a starter relay, a starter battery and a control circuit. In important application places such as fire pump stations and emergency generator sets, when the starter battery is low, the starter cannot start the engine normally, which is bound to bring serious safety hazards to fire rescue and emergency power supply. Therefore, the relevant fields have clear regulations and requirements for the engine starting power supply and its guarantee. However, since the probability of the engine set of the fire pump station being activated is extremely low, it is only used when a fire occurs and during regular drills. The standing starting power supply mode commonly used in the existing technology requires a dedicated person to be responsible for maintenance, and its operating costs constitute a waste. It is very difficult to manage it by relying on the staff's voluntary execution. Over time, it cannot reliably guarantee that the starting power supply is sufficient and in good condition. Summary of the invention

[0003] The utility model aims to provide a dual-circuit switching starting power supply for an engine, so as to achieve the purposes of convenient maintenance, real-time monitoring and dual-circuit protection.

[0004] The engine dual-circuit switching starting power supply provided by the utility model comprises a bracket, a common starting battery, a spare starting battery and a battery control cabinet; the battery control cabinet, the common starting battery and the spare starting battery are respectively fixed on the bracket; the utility model is characterized in that the battery control cabinet comprises a switching power supply, a common battery charger, a spare battery charger and a spare battery voltage detection controller; a conversion switch and an emergency stop button are arranged in the battery control cabinet; an alternating current is introduced into the battery control cabinet to connect the circuit breaker QF1, the circuit breaker QF1 is connected to the switching power supply through the fuse FU1, the switching power supply is connected to the control circuit, the circuit breaker QF1 is electrically connected to the common starting battery charger through the fuse FU2, the circuit breaker QF1 is electrically connected to the spare starting battery charger through the fuse FU3, and the circuit breaker QF1 is connected to the common starting battery voltage detection controller through the fuse FU4.

[0005] Furthermore, the common starting battery charger is connected to the positive and negative electrodes of the common starting battery through a shunt, and the ammeter is connected to the common starting battery charging circuit shunt; the spare starting battery charger is connected to the positive and negative electrodes of the spare starting battery through a shunt, and the ammeter is connected to the spare starting battery charging circuit shunt; the common starting battery voltage detection controller is connected to the positive and negative electrodes of the common starting battery through a signal line.

[0006] Furthermore, the emergency stop button is connected in series with the normally open contacts of the intermediate relay KA1 and the coil of the DC relay KM1 and then connected to a switching power supply, wherein a group of normally open contacts of the intermediate relay KA2 is connected in parallel with the normally open contacts of the intermediate relay KA1, and the backup starting battery running buzzer HD1 is connected in parallel with the coil of the DC relay KM1.

[0007] Furthermore, the emergency stop button is connected in series with the normally open contact of the common starting battery voltage detection controller and the common starting battery operation indicator HD2 and then connected to the switch power supply terminal; the emergency stop button is connected in series with the backup starting battery voltage detection controller and then connected to the switch power supply.

[0008] Furthermore, the emergency stop button is connected in series with the normally open contact of the backup starting battery voltage detection controller and the backup starting battery fault buzzer HD4 and then connected to the switch power terminal; the emergency stop button is connected in series with the control circuit power indicator HD3 and then connected to the switch power terminal.

[0009] The dual-way switching starting power supply for the engine provided by the utility model has the following positive effects: when the common starting battery of the engine starter runs out of power and the starter cannot start normally, it can switch to the backup starting battery in time to ensure that the starter can start normally. It can automatically switch and send a fault alarm signal when the backup starting battery runs out of power. The structure is simple and stable, which greatly improves the safety and reliability and provides reliable guarantee for users' use needs of important equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the general diagram of the battery control cabinet of the utility model;

[0011] Figure 2 It is a structural diagram of the support of the utility model;

[0012] Figure 3 , Figure 4 , Figure 5 This is the electrical schematic diagram of the automatic switching control of the starter battery of the utility model;

[0013] Figure 6 This is a common starting battery voltage detection controller structure diagram of the utility model;

[0014] Figure 7 This is a structure diagram of the backup starting battery voltage detection controller of the utility model;

[0015] Figure 8 It is a schematic diagram of the operation control logic of the utility model.

[0016] In the figure, 1- common starting battery ammeter, 2- spare starting battery ammeter, 3- common starting battery voltage detection controller, 4- control circuit power indicator light, 5- spare starting battery fault buzzer, 6- spare starting battery operation buzzer, 7- common starting battery operation indicator light, 8- emergency stop button, 9- conversion switch, 10- stop button, 11- start button, 12- bracket, 13- common starting battery, 14- spare starting battery, 15- anchor bolt fixing plate, 16- DC24V switching power supply, 17- common starting battery charger, 18- spare starting battery charger, 19- spare starting battery voltage detection controller, 20- starter, 21- battery control cabinet, 22- common starting battery monitoring signal line, 23- common starting battery charging line, 24- spare starting battery monitoring signal line, 25- spare starting battery charging line. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] like Figures 1 to 8 As shown, the utility model provides an engine dual-way switching starting power supply, comprising a bracket 12, a common starting battery 13, a spare starting battery 14, an anchor bolt fixing plate 15, and a battery control cabinet 21; the battery control cabinet 21 is fixed to the top of the bracket 12 by bolts, the common starting battery 13 and the spare starting battery 14 are respectively fixed to the bracket, and the bracket 12 is fixed to the ground by anchor bolts through the anchor bolt fixing plate 15; the battery control cabinet 21 comprises a DC24V switching power supply 16, a common battery charger 17, a spare battery charger 18 and a spare battery voltage detection control controller 19; AC220V AC power is introduced into the battery control cabinet 21 to connect the circuit breaker QF1, the circuit breaker QF1 is connected to the DC24V switching power supply 16 through the fuse FU1, the 24V+ and 0V terminals of the DC24V switching power supply 16 are respectively connected to the 24V+ and 0V terminals of the control circuit, the circuit breaker QF1 is electrically connected to the common starting battery charger 17 through the fuse FU2, the circuit breaker QF1 is electrically connected to the backup starting battery charger 18 through the fuse FU3, and the circuit breaker QF1 is connected to the common starting battery voltage detection controller 3 through the fuse FU4.

[0019] The common starting battery charger 17 is connected to the positive and negative electrodes of the common starting battery 13 through a shunt, and the common starting battery ammeter 1 is connected to the common starting battery charging circuit shunt; the spare starting battery charger 18 is connected to the positive and negative electrodes of the spare starting battery 14 through a shunt, and the spare starting battery ammeter 2 is connected to the spare starting battery charging circuit shunt; the common starting battery voltage detection controller 3 is connected to the positive and negative electrodes of the common starting battery 13.

[0020] The starter 20 is a supporting product for the engine equipment. The starter needs to provide positive and negative terminals for wiring with the starting battery. The positive electrode of the common starting battery 13 is connected to the positive electrode of the starter 20 through the normally closed contact of the DC relay KM1, and the positive electrode of the spare starting battery 14 is connected to the positive electrode of the starter 20 through the normally open contact of the DC relay KM1; the negative electrodes of the common starting battery 13 and the spare starting battery 14 are connected to the starter 20 respectively; the positive and negative electrodes of the common battery are respectively led out with signal lines 22 connected to the voltage detection terminals of the common starting battery voltage detection controller 3, and the charging line 23 is connected to the common starting battery charger 17; the positive and negative electrodes of the spare battery are respectively led out with signal lines 24 connected to the voltage detection terminals of the spare starting battery voltage detection controller 19, and the charging line 25 is connected to the common starting battery charger 18.

[0021] The battery control cabinet 21 also includes an SB3 emergency stop button 8 and an SA switch 9. The 24V+ terminal of the DC24V switch power supply 16 in the battery control cabinet 21 is connected to the SB3 emergency stop button 8, and the SB3 emergency stop button 8 is connected to the automatic normally closed contact and the manual normally open contact of the SA switch 9. The automatic normally closed contact of the SA switch 9 is connected to the normally open contact V1 of the common starting battery voltage detection controller 3, and the normally open contact V1 is connected to the coil of the intermediate relay KA1 and then connected to the 0V terminal of the DC24V switch power supply 16.

[0022] The manual normally open contact of the SA switching switch 9 is connected to the SB1 stop button 10, and the SB1 stop button 10 is connected in series with the SB2 start button 11 and the intermediate relay KA2 coil and then connected to the 0V terminal of the DC24V switching power supply 16, wherein a group of normally open contacts of the intermediate relay KA2 is connected in parallel with the SB2 start button 11.

[0023] The SB3 emergency stop button 8 is connected in series with the normally open contacts of the intermediate relay KA1 and the coil of the DC relay KM1 and then connected to the 0V terminal of the DC24V switching power supply 16. A group of normally open contacts of the intermediate relay KA2 is connected in parallel with the normally open contacts of the intermediate relay KA1 and the remote control normally open contact Y1. The HD1 backup starting battery running buzzer 6 is connected in parallel with the coil of the DC relay KM1.

[0024] The SB3 emergency stop button 8 is connected in series with the normally open contact V2 of the common starting battery voltage detection controller 3 and the HD2 common starting battery operation indicator light 7 and then connected to the 0V terminal of the DC24V switching power supply 16.

[0025] The SB3 emergency stop button 8 is connected in series with the HD3 control circuit power indicator light 4 and then connected to the 0V terminal of the DC24V switching power supply 16.

[0026] The SB3 emergency stop button 8 is connected in series with the backup starting battery voltage detection controller 19 and then connected to the 0V terminal of the DC24V switching power supply 16.

[0027] The SB3 emergency stop button 8 is connected in series with the normally open contact V3 of the backup starting battery voltage detection controller 19 and the HD4 backup starting battery fault buzzer 5 and then connected to the 0V terminal of the DC24V switching power supply 16.

[0028] The positive electrode of the common starting battery (13) is connected to the positive electrode of the starter (20) through the normally closed contact of the DC relay KM1, and the positive electrode of the backup starting battery (14) is connected to the positive electrode of the starter (20) through the normally open contact of the DC relay KM1; the negative electrodes of the common starting battery (13) and the backup starting battery (14) are respectively connected to the starter (20).

[0029] When the common starting battery charger 17 charges the common starting battery 13 , the common starting battery ammeter 1 displays the charging current value of the common starting battery 13 ; when the standby starting battery charger 18 charges the standby starting battery 14 , the standby starting battery ammeter 2 displays the charging current value of the standby starting battery 14 .

[0030] When the DC24V switching power supply 16 operates normally, the control circuit power indicator light 4 is always on; when the voltage of the backup starting battery 14 is lower than the set value, the backup starting battery failure buzzer 5 sounds an alarm.

[0031] When the voltage of the common starting battery 13 is lower than the set value and the standby starting battery 14 is put into operation, the standby starting battery operation buzzer 6 sounds an alarm.

[0032] When the common starting battery 13 is running, the common starting battery running indicator light 7 is always on.

[0033] The on-site wireless transmission module uploads the working current values ​​of the on-site common starting battery ammeter (1) and the backup starting battery ammeter (2), and the voltage values ​​of the common starting battery (13) and the backup starting battery (14) to the remote network monitoring platform through the wireless transmission module and displays them on the platform; at the same time, the platform also displays the working status of the power indicator light (4), the backup starting battery fault buzzer (5), the backup starting battery operation buzzer (6), and the common starting battery operation indicator light (7).

[0034] like Figure 3 , 4 In a specific application example of the utility model shown in 5, the starting voltage of the starter 20 is 12V, the common starting battery 13 and the spare starting battery 14 are 80D26R / 12V lead-acid batteries; the common starting battery voltage detection controller 3 is Q5100A-00-23-2-P, and the spare starting battery voltage detection controller 19 is YVT8-A; the common starting battery charger 17 and the spare starting battery charger 18 are NPB-360-12.

[0035] When the circuit breaker QF1 is closed, AC220V supplies power to the DC24V switching power supply 16, the normal starting battery charger 17, the backup starting battery charger 18, and the normal starting battery voltage detection controller 3.

[0036] The DC24V switching power supply 16 supplies power to the control circuit, and the power indicator light HD3 is always on.

[0037] Among them, the SA conversion switch 9 automatically closes the contact and is in the automatic switching state, and the process is as follows:

[0038] Step 1: When the common starting battery voltage detection controller 3 detects that the voltage of the common starting battery 13 is normal (higher than 10.8V), the normally open contact V2 of the common starting battery voltage detection controller 3 is closed, the HD2 common starting battery operation indicator light 7 is powered and always on, the common starting battery 13 is in operation, and the backup starting battery 14 is in disconnected state. At this time, the starter 20 is powered by the common starting battery 13;

[0039] Step 2: When the common starting battery voltage detection controller 3 detects that the voltage of the common starting battery 13 is abnormal (lower than 10.8V), the normally open contact V1 of the common starting battery voltage detection controller 3 is closed, and the normally open contact V2 is reset and disconnected, and the HD2 common starting battery operation indicator light 7 loses power and goes out;

[0040] Step 3: The common starting battery charger 17 charges the common starting battery 13, and the common starting battery ammeter 1 displays the charging current value; after the charging is completed, the ammeter 1 displays zero;

[0041] Step 4: The normally open contact V1 of the common starting battery voltage detection controller 3 is closed, the coil of the intermediate relay KA1 is energized, the normally open contact of the intermediate relay KA1 is closed, then the coil of the DC relay KM1 is energized, the normally closed contact of the DC relay KM1 is disconnected, the normally open contact is closed, and the HD1 backup starting battery operation buzzer 5 is energized to alarm. At this time, the common starting battery 13 is disconnected, the backup starting battery 14 is put into operation, and the starter 20 is powered by the backup starting battery 14;

[0042] Step 5: When the backup starting battery monitoring controller 19 detects that the backup starting battery 14 is abnormal (lower than 10.8V), the normally open contact V3 of the backup starting battery monitoring controller 19 is closed, and the backup starting battery fault buzzer 5 alarms;

[0043] Step 6: The standby starting battery charger 18 charges the common standby starting battery 14, and the standby starting battery ammeter 2 displays the charging current value. After the charging is completed, the ammeter 2 displays zero, and the standby starting battery fault buzzer 5 stops alarming;

[0044] Among them, the SA conversion switch 9 is manually closed at the normally open contact, which is the manual switching state. The process is as follows:

[0045] Step 1: Press the SB2 start button 11, then the coil of the intermediate relay KA2 is energized, the normally open contact of the intermediate relay KA2 is closed and self-locked, the coil of the DC relay KM1 is energized, the normally closed contact of the DC relay KM1 is disconnected, and the normally open contact is closed, the HD1 backup starting battery operation buzzer 6 is energized and sounds an alarm, at this time the normal starting battery 13 is disconnected, the backup starting battery 14 is put into operation, and the starter 20 is powered by the backup starting battery 14;

[0046] Step 2: Press the SB1 stop button 10, the intermediate relay KA2 coil loses power, the intermediate relay KA2 normally open contact resets and disconnects, the DC relay KM1 coil loses power, the DC relay KM1 normally closed contact resets and closes, and the normally open contact resets and disconnects. At this time, the HD1 backup starting battery running buzzer 6 loses power and stops alarming;

[0047] Step 3: After pressing the SB1 stop button 10, the coil of the DC relay KM1 loses power, its normally closed contact is reset, and the normally open contact is disconnected; at this time, the normal starting battery 13 is put into operation, the backup starting battery 14 is disconnected, and the starter 20 is powered by the normal starting battery 13.

[0048] The remote switching process is as follows:

[0049] Step 1: The remote network monitoring platform monitors the data transmitted by the wireless transmission module. If the common starting battery is low (lower than 10.8V) and the backup starting battery is not detected, the buzzer 6 will sound an alarm, and the monitoring platform will remotely control the closing of the remote control contact Y1;

[0050] Step 2: The DC relay coil KM1 is energized, the normally closed contact of the DC relay is disconnected, the normally open contact is closed, the backup starting battery 14 starts to work, and the backup starting power running buzzer 6 alarms;

[0051] Step 3: The remote network monitoring platform disconnects the remote control contact Y1 through the control line, then the DC relay coil KM1 loses power, the normally closed contact of the DC relay is restored, and the normally open contact is disconnected; the backup starting battery 14 stops working, the backup starting power running buzzer 6 stops alarming, and the starter 20 is powered by the normal starting battery 13;

[0052] Among them, when the SB3 emergency stop button 8 is pressed in an emergency, the control circuit is powered off.

[0053] The dual-way switching starting power supply for the engine provided by the utility model adopts a combination of automatic, manual and remote switching, so that when the common starting battery of the engine starter is depleted and the starter cannot start normally, it can be switched to the backup starting battery in time to ensure that the starter can start normally. It can automatically switch and send a fault alarm signal when the backup starting battery is depleted. The remote monitoring platform can monitor and control the operating status in real time and can realize the remote control function. The structure is simple and stable, which greatly improves the safety and reliability and provides reliable protection for users' use needs of important equipment.

[0054] It should be understood that the above examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined in the present application.

Claims

1. An engine dual-way switching starting power supply, comprising a bracket (12), a common starting battery (13), a spare starting battery (14), and a battery control cabinet (21); the battery control cabinet (21), the common starting battery (13), and the spare starting battery (14) are respectively fixed on the bracket; characterized in that: The battery control cabinet (21) comprises a switching power supply (16), a normal starting battery charger (17), a standby starting battery charger (18) and a standby battery voltage detection controller (19); a conversion switch (9) and an emergency stop button (8) are arranged inside the battery control cabinet (21); an alternating current is introduced into the battery control cabinet (21) to connect a circuit breaker QF1, the circuit breaker QF1 is connected to the switching power supply (16) through a fuse FU1, the switching power supply (16) is connected to a control circuit, the circuit breaker QF1 is electrically connected to the normal starting battery charger (17) through a fuse FU2, the circuit breaker QF1 is electrically connected to the standby starting battery charger (18) through a fuse FU3, and the circuit breaker QF1 is connected to the normal starting battery voltage detection controller (3) through a fuse FU4.

2. The engine dual-circuit switching starting power supply according to claim 1, characterized in that: The common starting battery charger (17) is connected to the positive and negative electrodes of the common starting battery through a shunt, and the common starting battery ammeter (1) is connected to the common starting battery charging circuit shunt; the spare starting battery charger (18) is connected to the positive and negative electrodes of the spare starting battery through a shunt, and the spare starting battery ammeter (2) is connected to the spare starting battery charging circuit shunt; the common starting battery voltage detection controller (3) is connected to the positive and negative electrodes of the common starting battery through a signal line (22).

3. The engine dual-circuit switching starting power supply according to claim 2, characterized in that: The emergency stop button (8) is connected in series with the normally open contacts of the intermediate relay KA1 and the coil of the DC relay KM1 and then connected to a switch power supply (16), wherein a group of normally open contacts of the intermediate relay KA2 is connected in parallel with the normally open contacts of the intermediate relay KA1, and the backup starting battery operation buzzer HD1 is connected in parallel with the coil of the DC relay KM1.

4. The engine dual-circuit switching starting power supply according to claim 3, characterized in that: The emergency stop button (8) is connected in series with the normally open contact of the common starting battery voltage detection controller (3) and the common starting battery operation indicator HD2, and then connected to the switch power supply (16) terminal; the emergency stop button (8) is connected in series with the backup starting battery voltage detection controller (19), and then connected to the switch power supply (16).

5. The engine dual-circuit switching starting power supply according to claim 4, characterized in that: The emergency stop button (8) is connected in series with the normally open contact of the backup starting battery voltage detection controller (19) and the backup starting battery fault buzzer HD4 and then connected to the switch power supply (16) terminal; the emergency stop button (8) is connected in series with the control circuit power indicator HD3 and then connected to the switch power supply (16) terminal.

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