TW201340446A - Backup battery box for electric cylinder - Google Patents

Abstract

The present invention provides a backup battery box for electric cylinder, which is assembled and electrically connected with the control box for driving the operation of the electric cylinder. The present invention comprises: a charge/discharge device and a rechargeable battery. The charge/discharge device comprises: a protection unit, a power conversion unit, a voltage detection unit, a control unit, a discharge unit, a display unit and a switch unit. The rechargeable battery and the charge/discharge device are electrically connected. When the start button of the switch unit is pressed, the charge/discharge device may transfer the electricity in the rechargeable battery to the control box. When the power-off button of the switch unit is pressed, the charge/discharge device will be in a power-off mode to prevent the electricity of the backup battery to be exhausted.

Description

Spare battery case for electric cylinder

The present invention relates to a control system, and more particularly to a spare battery case that provides power to the control box to drive an electric cylinder.

It is known that at present, the bottom of the hospital bed is equipped with an electric cylinder control device. After the electric control cylinder is driven, the electric cylinder can adjust the lifting height of the hospital bed and the rising angle of the mattress, so that the user can Comfortably lying on the bed.

The electric cylinder control device on the hospital bed is composed of a control box, a spare battery box and an electric cylinder. The electric cylinder is electrically connected to the control box, and the backup battery box is assembled and electrically connected to the control box. After the backup battery box is charged with power, the backup battery box provides the working power required by the control box. When the control box receives the operation signal input by the external operation interface, the electric cylinder can be controlled to perform the lifting adjustment of the mattress or the bed frame.

Since the battery compartment of the electric cylinder is charged or installed, the electric cylinder device is stored or installed in the hospital for a period of time, and after the bed or the electric cylinder device is transported to the hospital for installation, when the power switch is pressed for testing or use, often The occurrence of the control box cannot control the operation of the electric cylinder, and the main reason is that the power of the rechargeable battery itself has been exhausted. Since the charging and discharging device inside the spare battery case and the components used on the circuit board of the control box have a specific internal resistance value, the internal resistance value causes the rechargeable battery to form an invisible discharge state, so the electric cylinder device storage time Or the transportation time is too long, it is easy to cause the exhausted battery to run out of power.

Therefore, the main object of the present invention is to solve the conventional deficiency and avoid the existence of the missing. The present invention installs a switch unit on the spare battery case of the electric cylinder, and the switch unit is used for powering off or starting the power supply during storage or transportation. In the middle, the switch unit can be pressed to make the backup battery box undischarged to prevent the backup battery box from being exhausted.

In order to achieve the above purpose, the present invention provides a backup battery case for an electric cylinder, which is assembled and electrically connected to the control box for driving the electric cylinder, including:

A charging and discharging device includes a discharge unit and a switch unit, and the discharge unit is electrically connected to the switch unit;

a rechargeable battery electrically connected to the charging and discharging device;

Wherein, when the switch unit is pressed to make the discharge unit be in a power-off state, the charge and discharge device is in a non-power supply mode; when the switch unit is pressed to cause the discharge unit to be in an activated state, the charge and discharge device transmits the power of the rechargeable battery To the control box.

The discharge unit of the charging and discharging device is connected to a voltage detecting unit and a control unit. When the voltage detecting unit detects that the discharging voltage of the rechargeable battery is too low, the voltage detecting unit outputs a signal. To the control unit, the control unit outputs a control signal to the discharge unit to stop the discharge unit from discharging.

The control unit included in the charging and discharging device is electrically connected to a protection unit, a power conversion unit and a voltage detecting unit, and the control unit is configured to receive the voltage detecting unit to detect that the charging voltage is too high. The feedback signal is sent to the control unit, and the control unit outputs a signal to drive the protection unit to cut off the power supply.

The protection unit is electrically connected to the external control box. When the rechargeable battery is overcharged, the protection unit is used to cut off the power input by the control box.

The power conversion unit is electrically connected to the protection unit for converting the DC power outputted by the protection unit into a DC power output of a constant voltage and a constant current to provide charging of the rechargeable battery.

The voltage detecting unit included in the charging and discharging device is electrically connected to the power conversion unit to detect when the charging voltage of the rechargeable battery is too high, to start the protection unit to cut off the power, or to detect When the discharge voltage of the rechargeable battery is measured to be too low, the discharge is stopped.

Wherein, the charging and discharging device further comprises a display unit electrically connected to the protection unit and the discharge unit, the rechargeable battery is discharged, and the display unit is to be illuminated to display that the backup battery case is discharged.

Wherein, the display unit is a light emitting diode.

The switch unit includes a power-off switch and a start switch.

Wherein, the power-off switch is pressed, and the discharge unit is in an open state, so that the discharge unit stops outputting power to the control box.

Wherein, when the control box is connected to the AC power source, the control unit interrupts the function of the power-off switch.

Wherein, the start switch is pressed, and the discharge unit is in an on state to transmit power to the control box.

Wherein, the rechargeable battery is a lead-acid battery.

The technical content and detailed description of the present invention are as follows:

Please refer to the first and second figures, which are circuit diagrams of the circuit block of the spare battery case of the present invention and the control box and the electric cylinder connected to the spare battery case of the first figure. As shown in the figure, the backup battery case 10 of the electric cylinder of the present invention comprises: a charging and discharging device 1 and a rechargeable battery 2.

The charging and discharging device 1 includes a protection unit 11, a power conversion unit 12, a voltage detecting unit 13, a control unit 14, a discharge unit 15, a display unit 16, and a switch unit 17.

The protection unit 11 is electrically connected to the external control box 20, and the protection unit 11 is used to cut off the power input by the control box 20 when the rechargeable battery 2 is overcharged.

The power conversion unit 12 is electrically connected to the protection unit 11 for converting the DC power outputted by the protection unit 11 into a DC power output of a constant voltage and a constant current to provide charging of the rechargeable battery 2.

The voltage detecting unit 13 is electrically connected to the power converting unit 12, and is divided by the first voltage dividing resistor (R5) 131 and the second voltage dividing resistor (R20) 132 of the voltage detecting unit 13 and then transmitted to the voltage detecting unit 13 When the control unit 14 determines that the charging voltage of the rechargeable battery 2 is too high, the power is turned off by the activation protection unit 11. The third voltage dividing resistor (R10) 133 and the fourth voltage dividing resistor (R11) 134 of the voltage detecting unit 13 are divided and transmitted to the control unit 14 for determining that the discharging voltage of the rechargeable battery 2 is too low. The unit 14 outputs a control signal to the discharge unit 15 to cause the discharge unit 15 to stop the discharge operation.

The control unit 14 is electrically connected to the protection unit 11, the power conversion unit 12, and the voltage detection unit 13. The control unit 14 is configured to receive the feedback when the voltage detection unit 13 detects that the charging voltage is too high. The signal is sent to the control unit 14, and the control unit 14 outputs a signal to drive the protection unit 11 to cut off the power supply to prevent the rechargeable battery 2 from being overcharged and damaged.

The voltage detecting unit 13 is electrically connected to the voltage detecting unit 13 and the control unit 14. When the voltage detecting unit 13 detects that the discharging voltage of the rechargeable battery 2 is too low, the voltage detecting unit 13 outputs a signal to In the control unit 14, the control unit 14 outputs a control signal to the discharge unit 15 to stop the discharge operation of the discharge unit 15.

The display unit 16 is electrically connected to the protection unit 11, the discharge unit 15, and the control box 20. The rechargeable battery 2 is discharged to provide the required working power of the control box 20. The display unit 16 will be illuminated. To show that the spare battery case 10 is discharging. In the figure, the display unit 16 is a light emitting diode.

The switch unit 17 includes a power-off switch 171 and a start switch 172 electrically connected to the discharge unit 15. The switch unit 17 is used to control the first transistor (Q4) 151 of the discharge unit 15 at the break. When the electric switch 171 is pressed, the third pin and the fourth pin are short-circuited, so that the second transistor (Q10) 152 of the discharge unit 15 is turned off, thereby turning off the first transistor (Q4) 151, and the discharge unit 15 is turned off. In the open state, at this time, the first voltage terminal 101 of +VCC has no voltage, and the system is turned off due to no power. After the control box 20 is plugged in, the second voltage terminal 102 having 30V can directly supply power through the diode (D6) 103. When the power-off switch 171 is pressed, the first and second transistors 151 and 152 are turned off, but The first voltage terminal 101 of +VCC is still energized, and the system continues to operate without being affected. After the start switch 172 is pressed, the first pin and the second pin are short-circuited, and the voltage of the rechargeable battery 2 passes through the diode (D5) 104, so that the first voltage terminal 101 of the +VCC is powered, and the system can be powered on. After the system is started, the fourth pin (SWICTH) 141 of the control unit 14 outputs a voltage of 5V, which is input by the switch pin (SWITCH) 153 of the discharge unit 15, so that the second transistor 152 and the second transistor are enabled. 151 maintains conduction so that the first voltage terminal 101 of +VCC does not become dead due to the release of the start switch 172.

The rechargeable battery 2 is electrically connected to the voltage detecting unit 13 for receiving power output by the voltage detecting unit 13 for charging. In this figure, the rechargeable battery is a lead acid battery.

Please refer to the third, fourth and fifth figures, which are schematic diagrams of the appearance of the spare battery case and the decomposition and combination of the spare battery case and the control box of the present invention; please refer to the first figure as shown in the figure: in the spare battery case 10 and control When the cartridge 20 is assembled, the backup battery case 10 is locked to the control box 20 by the screw 40, and then the power transmission line 105 on the backup battery case 10 is plugged onto the control box 20, so that the circuit board 201 of the control box 20 is It is electrically connected to the inside of the backup battery case 10.

After the control box 20 is plugged in, the DC power converted by the control box 20 is transmitted to the backup battery case 10, and passes through the protection unit 11, the power conversion unit 12, and the voltage detecting unit 13 of the charging and discharging device 1. The rechargeable battery 2 can be charged. When the voltage detecting unit 13 detects that the charging voltage of the rechargeable battery 2 is too high, the voltage detecting unit 13 outputs a signal to the control unit 14, and the control unit 14 outputs a signal to drive the protection unit 11 to interrupt the power output ( Stop powering).

During the transportation of the backup battery case 10, the power-off switch 171 of the switch unit 17 can be pressed to bring the discharge unit 15 into an open state (while the control unit 14 does not operate), so that the backup battery case 10 is in the process of being transported. The power of the rechargeable battery 2 is not exhausted.

After the start switch 172 is pressed, the discharge unit 15 is turned on (while the control unit 14 is activated), the power of the rechargeable battery 2 can be transmitted to the control box 20, and the display unit 16 is simultaneously illuminated during the transmission of power. It is in a discharged state.

After the control box 20 is plugged in (connected to the AC power source), the power source transferred to the backup battery case 10 is charged to the rechargeable battery 2, and the control unit 14 interrupts the power-off switch 171 function, and is pressed at this time. The power-off switch 171 has no effect.

Please refer to the sixth figure, which is a schematic diagram of the state of use of the present invention. As shown in the figure, the backup battery case 10 of the present invention is assembled and electrically connected to the control box 20. The control box 20 has a plurality of control transmission lines 202, and one of the control transmission lines 202 is electrically connected to the electric cylinder 30. After the start switch 172 of the switch unit 17 on the charging and discharging device 1 of the backup battery case 20 is pressed, the power of the rechargeable battery 2 is transmitted from the power transmission line 105 to the circuit board 201 of the control box 20, at which time the control The control unit 20 transmits the control signal to the electric cylinder 30 by the control transmission line 202, so that the electric cylinder 30 can be immediately actuated to push the back of the mattress or the reclining chair of the hospital bed at different angles.

The above are only the preferred embodiments of the present invention and are not intended to limit the scope of the present invention. That is, the equivalent changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the invention.

10. . . Spare battery case

101. . . First voltage terminal

102. . . Second voltage terminal

103. . . Dipole

104. . . Dipole

105. . . Power transmission line

1. . . Charge and discharge device

2. . . Rechargeable Battery

11. . . Protection unit

12. . . Power conversion unit

13. . . Voltage detection unit

14. . . control unit

141. . . Fourth pin

15. . . Discharge unit

151. . . First transistor

152. . . Second transistor

153. . . Switch pin

16. . . Display unit

17. . . Switch unit

171. . . Power off switch

172. . . Start switch

20. . . control box

201. . . Circuit board

202. . . Control transmission line

30. . . Electric cylinder

The first figure is a schematic diagram of the circuit block of the spare battery case of the present invention and the control box and the electric cylinder.

The second figure is a schematic diagram of the circuit of the spare battery case of the present invention.

The third figure is a schematic view of the appearance of the spare battery case of the present invention.

The fourth figure is an exploded view of the spare battery case and the control box of the present invention.

The fifth figure is a schematic diagram of the combination of the spare battery case and the control box of the present invention.

Fig. 6 is a schematic view showing the state of use of the present invention.

10. . . Spare battery case

1. . . Charge and discharge device

2. . . Rechargeable Battery

11. . . Protection unit

12. . . Power conversion unit

13. . . Voltage detection unit

14. . . control unit

15. . . Discharge unit

16. . . Display unit

17. . . Switch unit

20. . . control box

30. . . Electric cylinder

Claims (13)

A spare battery case for an electric cylinder is assembled and electrically connected with a control box for driving an electric cylinder, including:
A charging and discharging device includes a discharge unit and a switch unit, and the discharge unit is electrically connected to the switch unit;
a rechargeable battery electrically connected to the charging and discharging device;
Wherein, when the switch unit is pressed to cause the discharge unit to be in a power-off state, the charge and discharge device is in a non-power supply mode; when the switch unit is pressed to cause the discharge unit to be in an activated state, the charge and discharge device is used to charge the battery Power is transferred to the control box. The battery pack of the charging and discharging device is connected to a voltage detecting unit and a control unit, and the voltage detecting unit detects the rechargeable battery. When the discharge voltage is too low, the voltage detecting unit outputs a signal to the control unit, and the control unit outputs a control signal to the discharge unit to stop the discharge unit from discharging. The battery pack of claim 2, wherein the control unit included in the charging and discharging device is electrically connected to a protection unit, a power conversion unit and a voltage detecting unit. When the voltage detecting unit is detected to detect that the charging voltage is too high, the feedback signal is sent to the control unit, and the control unit outputs a signal to drive the protection unit to cut off the power supply. The spare battery case according to claim 3, wherein the protection unit is electrically connected to an external control box, and the protection unit is configured to cut off the power input by the control box when the rechargeable battery is overcharged. The backup battery case according to claim 3, wherein the power conversion unit is electrically connected to the protection unit, and is configured to convert the DC power outputted by the protection unit into a constant voltage and constant current DC power supply. Output to provide charging of the rechargeable battery. The battery pack according to claim 3, wherein the voltage detecting unit included in the charging and discharging device is electrically connected to the power converting unit to detect that the charging voltage of the rechargeable battery is too high. When the power is turned off by the startup protection unit, or when the discharge voltage of the rechargeable battery is detected to be too low, the discharge is stopped. The battery pack according to any one of claims 3 to 6, wherein the charging and discharging device further comprises a display unit electrically connected to the protection unit and the discharge unit, and the rechargeable battery is discharged. The display unit will be illuminated to indicate that the spare battery compartment is discharging. The spare battery case according to claim 7, wherein the display unit is a light emitting diode. The spare battery case according to claim 1, wherein the switch unit comprises a power-off switch and a start switch. The spare battery case according to claim 9, wherein the power-off switch is pressed, and the discharge unit is in an open state, so that the discharge unit stops outputting power to the control box. The spare battery case according to claim 10, wherein the control unit interrupts the function of the power-off switch when the control box is connected to the AC power source. The spare battery case according to claim 11, wherein the start switch is pressed, and the discharge unit is in an on state to transmit power to the control box. The spare battery case according to claim 1, wherein the rechargeable battery is a lead-acid battery.