Patent Description:
At present, movable products of a medical X-ray imaging device, such as a movable C-shaped arm X-ray machine, have been developed. The movable products can easily move between different operating rooms of a hospital. In this process, it is necessary to disconnect and reconnect a power supply as well as close and restart the device. This process takes a long time, and the device cannot be used in emergency.

<CIT> discloses a device for supplying electrical power to an image-generating medical device. The device comprises a charger connected with an electrical power supply for generating at least one operation DC voltage from an AC voltage of the electrical power supply. An energy storage device is connected to the charger and provided with a lithium ions accumulator. The an input side of the energy storage device is provided with the operation DC voltage as charging voltage. An output side of an energy storage device provides directly the operation DC voltage for performing operation of the imaging medical device.

<CIT> discloses that, in a CT (computerized tomographic) scanning apparatus, a biological body under medical examination is scanned to acquire image data on the scanned body. The CT scanning apparatus comprises: an AC/DC converting unit for converting AC power supplied from a commercial power source into first DC power; a peak power consumption unit for consuming peak power during a scanning operation; and a secondary battery unit rechargeable by the first DC power supplied from the AC/DC converting unit and capable of supplying second DC power to the peak power consumption unit during at least the scanning operation.

<CIT> discloses a CT scanner. To cope with a peak power even when the power capacity of an engine generator is reduced, a secondary battery capable of charging a total power required for one time of scan or plural times of scan is provided in an X-ray high voltage device. The total power required for the scan is charged into the secondary battery in a period while the scan is interrupted, and the power is supplied from the secondary battery to the first unit of an X-ray tube, etc., when the scan is performed.

One objective of the present application is to provide a power supply system for a medical X-ray imaging device. The power supply system can reduce the time for reconnecting the medical X-ray imaging device to a power supply to recover to a normal working state.

Another objective of the present application is to provide the medical X-ray imaging device. The power supply system for the medical X-ray imaging device can reduce the time for reconnecting the medical X-ray imaging device to the power supply to recover to the normal working state.

The present application provides a power supply system for a medical X-ray imaging device. The power supply system includes a power connector, a first power supply connector, a battery module and a second power supply connector. The power connector is configured to be connected to a power grid. The first power supply connector is connected to the power connector. The first power supply connector is configured to be connected to a first-class electrical component of the medical X-ray imaging device. The battery module is connected to the power connector. The battery module is provided with a storage battery. The battery module is configured to acquire electric energy from the power grid through the power connector to charge the storage battery. The second power supply connector is connected to the battery module. The second power supply connector is configured to be connected to a second-class electrical component of the medical X-ray imaging device. The battery module is configured to connect any one of the power connector and the storage battery to the second power supply connector in a switchable mode.

According to the power supply system for a medical X-ray imaging device, the second-class electrical component can obtain electric energy from the storage battery to maintain operating in a case that the power connector is in a power-off state, so that when the power connector is reconnected to the power grid, the second-class electrical component does not need to be restarted, and only the electrical component with the restarting time less than a preset time threshold, namely the first-class electrical component, needs to be restarted. Therefore, the power supply system can effectively reduce the time for reconnecting the medical X-ray imaging device to the power supply to recover to the normal working state.

The battery module includes a first switch. The first switch is controlled by the power connector. A contact end of the first switch is connected to the power connector, the storage battery and the second power supply connector. The first switch is configured to connect the power connector to the second power supply connector in a case that the power connector is in a power-on state; and the first switch is configured to connect the storage battery to the second power supply connector in a case that the power connector is in a power-off state. By arranging the first switch, connection of the power connector, the storage battery and the second power supply connector can be automatically switched according to a condition whether the power connector is powered on or not, and therefore the convenience in use can be improved.

In another exemplary embodiment of the power supply system for a medical X-ray imaging device, the first switch is a relay.

In yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the battery module includes a first AC/DC converter and a first DC/AC converter. The first AC/DC converter is connected between the power connector and the storage battery. The first DC/AC converter is connected between the storage battery and the first switch. Therefore, the electric energy can be switched between alternating current and direct current according to the requirements of the storage battery and AC-powered electrical components.

In still yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the power supply system further includes a second AC/DC converter. The second AC/DC converter is connected to the first power supply connector and is configured to be connected to a DC-powered first-class electrical component. Therefore, the electric energy is conveniently supplied to the DC-powered first-class electrical component.

In still yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the power supply system further includes a third AC/DC converter. The third AC/DC converter is connected to the second power supply connector and configured to be connected to a DC-powered second-class electrical component. Therefore, the electric energy is conveniently supplied to the DC-powered second-class electrical component.

In still yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the power supply system includes two second power supply connectors; one second power supply connector is configured to be connected to an AC-powered second-class electrical component, and the other second power supply connector is configured to be connected to the DC-powered second-class electrical component. The contact end of the first switch is provided with a first contact set and a second contact set. The first contact set is connected to the second power supply connector which is configured to be connected to the AC-powered second-class electrical component, and the second contact set is connected to the second power supply connector which is configured to be connected to the DC-powered second-class electrical component. The battery module further includes a first AC/DC converter, a first DC/AC converter and a DC/DC converter. The first AC/DC converter is connected between the power connector and the storage battery. The first DC/AC converter is connected between the storage battery and the first contact set. The DC/DC converter is connected between the storage battery and the second contact set. Therefore, the electric energy can be switched between alternating current and direct current according to the requirements of the storage battery and the electrical components.

In still yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the power supply system further includes a second AC/DC converter. The second AC/DC converter is connected to the first power supply connector and configured to be connected to the DC-powered first-class electrical component. The second contact set is connected to the power connector through the second AC/DC converter and the first power supply connector. Therefore, a circuit can be simplified, and the stability of the power supply system can be improved.

In still yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the battery module further includes a battery management system. The battery management system is configured to detect a residual electric quantity of the storage battery and transmit an electric quantity signal. The power supply system further includes a prompt module. The prompt module is connected to the battery management system and is configured to display patterns or make a sound according to the electric quantity signal. Therefore, a user can conveniently know the residual electric quantity of the storage battery.

In still yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the battery module is an uninterruptible power supply. The power supply system further includes a second switch and a third power supply connector. The third power supply connector is configured to be connected to a second-class electrical component needing limitation on operating power in power off. The second switch is controlled by the power connector. A contact end of the second switch is connected to the power connector, the second power supply connectors and the third power supply connector. The second switch is configured to connect the power connector to the third power supply connector in a case that the power connector is in the power-on state, and the second switch is configured to connect the second power supply connectors to the third power supply connector in a case that the power connector is in the power-off state. By arranging the uninterruptible power supply, the circuit can be simplified, and the stability of the power supply system can be improved. By arranging the second switch and the third power supply connector, a situation that the maximum output power of the uninterruptible power supply limits the operating power of the electrical components in a case that the power connector is in the power-on state can be avoided.

In still yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the second switch is a relay.

In still yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the power supply system further includes a monitoring module. The monitoring module is configured to detect an on-off state of the contact end of the second switch and transmit an operating power limiting signal in a case of detecting that the second switch connects the second power supply connectors to the third power supply connector. A control system for a medical X-ray imaging device is configured to control the second-class electrical component needing limitation on operating power in power off to only implement a function that the power is less than a set threshold according to the operating power limiting signal. Therefore, a situation that the device is damaged because of forcibly operating a function that the power is greater than the maximum output power of the uninterruptible power supply in a case that the power connector is in the power-off state can be prevented.

In still yet another exemplary embodiment of the power supply system for a medical X-ray imaging device, the power supply system further includes an AC/AC converter. The AC/AC converter is connected between the power connector and the first power supply connector and between the power connector and the battery module.

The present application further provides a medical X-ray imaging device. The medical X-ray imaging device includes the abovementioned power supply system. The power supply system for the medical X-ray imaging device can effectively reduce the time for reconnecting the medical X-ray imaging device to the power supply to recover to the normal working state.

In another exemplary embodiment of the medical X-ray imaging device, the electrical components of the medical X-ray imaging device are divided into the first-class electrical component and the second-class electrical component according to the time for restarting; the restarting time of the first-class electrical component is less than a preset time threshold; and the restarting time of the second-class electrical component is greater than or equal to the preset time threshold.

In yet another exemplary embodiment of the medical X-ray imaging device, the medical X-ray imaging device is a movable C-shaped arm X-ray machine; and the second-class electrical component of the movable C-shaped arm X-ray machine includes an X-ray generator, a computer, a collimator and a micro-control unit.

The following drawings are only used to schematically explain the present embodiments, and do not limit the scope of the present embodiments.

In order to have a clearer understanding of the technical characteristics, objectives, and effects of the present application, the specific embodiments of the present application are explained with reference to the accompanying drawings. The same reference numerals in each figure represent components with the same structure or similar structure and the same function.

In the present applicatipon, "exemplary" means "serving as an instance, example, or explanation", and any illustration or embodiment described as "exemplary" in the present application cannot be interpreted as a more preferred or advantageous technical solution.

In the present application, "first", "second", etc. are not used to indicate their importance or order, but only to indicate their differences and facilitate the description of the document.

To make the drawings concise, only the parts related to the present application are schematically represented in each figure, and they do not represent the actual structure of a product.

In the present application, "AC" represents alternating current, and "DC" represents direct current. An AC/DC converter refers to an element that converts AC into DC. A DC/AC converter refers to an element that converts DC into AC. An AC/AC converter refers to an element that converts AC of one form into AC of another form. A DC/DC converter refers to an element that converts DC of one form into DC of another form.

The present application provides a power supply system for a medical X-ray imaging device. Electrical components of the medical X-ray imaging device are divided into a first-class electrical component and a second-class electrical component according to the time for restarting; the restarting time of the first-class electrical component is less than a preset time threshold; and the restarting time of the second-class electrical component is greater than or equal to the preset time threshold. The specific numerical value of the time threshold can be flexibly adjusted according to actual needs. The medical X-ray imaging device can be, for example, a movable C-shaped arm X-ray machine. The second-class electrical component of the movable C-shaped arm X-ray machine includes an X-ray generator, a computer, a collimator and a micro-control unit.

<FIG> is a schematic circuit diagram of a power supply system for a medical X-ray imaging device of an exemplary embodiment. As shown in <FIG>, the power supply system for a medical X-ray imaging device includes a power connector <NUM>, a first power supply connector <NUM>, a battery module <NUM> and a second power supply connector <NUM>.

The power connector <NUM> is configured to be connected to a power grid. The first power supply connector <NUM> is connected to the power connector <NUM>. The first power supply connector <NUM> is configured to be connected to a first-class electrical component (including an AC-powered first-class electrical component <NUM> and a DC-powered first-class electrical component <NUM>) of the medical X-ray imaging device. The battery module <NUM> is connected to the power connector <NUM>. The battery module <NUM> is provided with a storage battery <NUM>. The battery module <NUM> is configured to acquire electric energy from the power grid through the power connector <NUM> to charge the storage battery <NUM>. The second power supply connector <NUM> is connected to the battery module <NUM>. The second power supply connector <NUM> is configured to be connected to a second-class electrical component (including an AC-powered second-class electrical component <NUM> and a DC-powered second-class electrical component <NUM>) of the medical X-ray imaging device. The battery module <NUM> is configured to connect any one of the power connector <NUM> and the storage battery <NUM> to the second power supply connector <NUM> in a switchable mode. For example, switching is achieved in a manual control or automatic control mode. In this exemplary embodiment, the battery module <NUM> achieves automatic switching through a switch, but it is not limited to this.

The working process of the power supply system is illustrated as follows.

In a case that the power connector <NUM> is in a power-on state (namely, the power connector <NUM> is connected to the power grid), the first-class electrical component (including the AC-powered first-class electrical component <NUM> and the DC-powered first-class electrical component <NUM>) can obtain electric energy from the power grid through the power connector <NUM>. Meanwhile, the battery module <NUM> is switched to connect the power connector <NUM> to the second power supply connector <NUM>, and the second-class electrical component (including the AC-powered second-class electrical component <NUM> and the DC-powered second-class electrical component <NUM>) can obtain electric energy from the power grid through the power connector <NUM>. Meanwhile, the battery module <NUM> can obtain the electric energy from the power grid through the power connector <NUM> to charge the storage battery <NUM>.

In a case that the power connector <NUM> is in a power-off state (namely, the power connector <NUM> is not connected to the power grid), the first-class electrical component (including the AC-powered first-class electrical component <NUM> and the DC-powered first-class electrical component <NUM>) is powered off. Meanwhile, the battery module <NUM> is switched to connect the storage battery <NUM> to the second power supply connector <NUM>, and the second-class electrical component (including the AC-powered second-class electrical component <NUM> and the DC-powered second-class electrical component <NUM>) can obtain electric energy from the storage battery <NUM> to maintain operating.

When the power connector <NUM> is reconnected to the power grid, the first-class electrical component (including the AC-powered first-class electrical component <NUM> and the DC-powered first-class electrical component <NUM>) can obtain electric energy from the power grid through the power connector <NUM> to be restarted. Meanwhile, the battery module <NUM> is switched to connect the power connector <NUM> to the second power supply connector <NUM>, and the second-class electrical component (including the AC-powered second-class electrical component <NUM> and the DC-powered second-class electrical component <NUM>) can obtain electric energy from the power grid through the power connector <NUM>. Meanwhile, the battery module <NUM> can obtain electric energy from the power grid through the power connector <NUM> to charge the storage battery <NUM> again.

As the second-class electrical component can obtain electric energy from the storage battery <NUM> to maintain operating in a case that the power connector <NUM> is in the power-off state, when the power connector <NUM> is reconnected to the power grid, the second-class electrical component does not need to be restarted, and only the electrical component with the restarting time less than a preset time threshold, namely the first-class electrical component, needs to be restarted. Therefore, the power supply system can effectively reduce the time for reconnecting the medical X-ray imaging device to the power supply to recover to the normal working state.

As shown in <FIG>, in this exemplary embodiment, the battery module <NUM> includes a first switch <NUM> (only a contact end of the first switch is drawn in <FIG>). The first switch <NUM> is controlled by the power connector <NUM>, for example, the first switch is a relay, but it is not limited to this. The contact end of the first switch <NUM> is connected to the power connector <NUM>, the storage battery <NUM> and the second power supply connector <NUM>, specifically, a contact A1 is connected to the power connector <NUM>, a contact A2 is connected to the storage battery <NUM>, and a contact A3 is connected to the second power supply connector <NUM>. The first switch <NUM> is configured to connect the power connector <NUM> to the second power supply connector <NUM> in a case that the power connector <NUM> is in a power-on state (namely, the contact A1 makes contact with the contact A3, and the contact A2 is disconnected from the contact A3), and the first switch <NUM> is configured to connect the storage battery <NUM> to the second power supply connector <NUM> in a case that the power connector <NUM> is in a power-off state (namely, the contact A2 makes contact with the contact A3, and the contact A1 is disconnected from the contact A3). By arranging the first switch, connection of the power connector <NUM>, the storage battery <NUM> and the second power supply connector <NUM> can be automatically switched according to a condition whether the power connector <NUM> is powered on or not, and therefore the convenience in use can be improved.

As shown in <FIG>, in this exemplary embodiment, the battery module <NUM> further includes a first AC/DC converter <NUM> and a first DC/AC converter <NUM>. The first AC/DC converter <NUM> is connected between the power connector <NUM> and the storage battery <NUM>. The first DC/AC converter <NUM> is connected between the storage battery <NUM> and the contact A2 of the first switch <NUM>. As current in the power grid is alternating current, the storage battery <NUM> is charged with direct current, and current in some electrical components is alternating current; and the first AC/DC converter <NUM> and the first DC/AC converter <NUM> are arranged to switch electric energy between alternating current and direct current according to the requirements of the storage battery <NUM> and AC-powered electrical components.

As shown in <FIG>, in this exemplary embodiment, the power supply system further includes a second AC/DC converter <NUM> and a third AC/DC converter <NUM>. The second AC/DC converter <NUM> is connected to the first power supply connector <NUM> and configured to be connected to the DC-powered first-class electrical component <NUM>. The AC-powered first-class electrical component <NUM> is directly connected to the first power supply connector <NUM>. The third AC/DC converter <NUM> is connected to the second power supply connector <NUM> and configured to be connected to the DC-powered second-class electrical component <NUM>. The AC-powered second-class electrical component <NUM> is directly connected to the second power supply connector <NUM>. Electric energy can be conveniently supplied to the DC-powered electrical components through the second AC/DC converter <NUM> and the third AC/DC converter <NUM>.

As shown in <FIG>, in this exemplary embodiment, the power supply system further includes an AC/AC converter <NUM>. The AC/AC converter <NUM> is connected between the power connector <NUM> and the first power supply connector <NUM> and between the power connector <NUM> and the battery module <NUM>. Therefore, the alternating current provided by the power grid is converted into alternating current meeting the requirements of the medical X-ray imaging device.

As shown in <FIG>, in this exemplary embodiment, the battery module <NUM> further includes a battery management system <NUM>. The battery management system <NUM> is configured to detect a residual electric quantity of the storage battery <NUM> and transmit an electric quantity signal. The power supply system further includes a prompt module <NUM>. The prompt module <NUM> is connected to the battery management system <NUM> and is configured to display patterns or make a sound according to the electric quantity signal. The prompt module <NUM> is a display for example, and is configured to display different patterns to represent different residual electric quantities of the storage battery <NUM>. The prompt module <NUM> is also a buzzer for example, and is configured to make a sound to remind a user when the residual electric quantity of the storage battery <NUM> is less than a threshold.

<FIG> is a schematic circuit diagram of a power supply system for a medical X-ray imaging device of another exemplary embodiment. As shown in <FIG>, the power supply system for a medical X-ray imaging device includes a power connector <NUM>, a first power supply connector <NUM>, a battery module <NUM> and two second power supply connectors <NUM>.

The power connector <NUM> is configured to be connected to a power grid. The first power supply connector <NUM> is connected to the power connector <NUM>. The first power supply connector <NUM> is configured to be connected to a first-class electrical component (including an AC-powered first-class electrical component <NUM> and a DC-powered first-class electrical component <NUM>) of the medical X-ray imaging device. The battery module <NUM> is connected to the power connector <NUM>. The battery module <NUM> is provided with a storage battery <NUM>. The battery module <NUM> is configured to acquire electric energy from the power grid through the power connector <NUM> to charge the storage battery <NUM>. The second power supply connector <NUM> is connected to the battery module <NUM>. The second power supply connectors <NUM> are configured to be connected to a second-class electrical component of the medical X-ray imaging device; one second power supply connector <NUM> is configured to be connected to an AC-powered second-class electrical component <NUM>, and the other second power supply connector <NUM> is configured to be connected to a DC-powered second-class electrical component <NUM>. The battery module <NUM> is configured to connect any one of the power connector <NUM> and the storage battery <NUM> to the second power supply connectors <NUM> in a switchable mode.

Specifically, as shown in <FIG>, the battery module <NUM> includes a first switch <NUM> (only a contact end of the first switch is drawn in <FIG>). The first switch <NUM> is controlled by the power connector <NUM>, for example, the first switch is a relay, but it is not limited to this. The contact end of the first switch <NUM> is provided with a first contact set (i.e., contacts B1, B2 and B3) and a second contact set (i.e., contacts C1, C2 and C3). In the first contact set, the contact B1 is connected to the power connector <NUM>, the contact B2 is connected to the storage battery <NUM>, and the contact B3 is connected to the second power supply connector <NUM> which is configured to be connected to the AC-powered second-class electrical component <NUM>. In the second contact set, the contact C1 is connected to the power connector <NUM>, the contact C2 is connected to the storage battery <NUM>, and the contact C3 is connected to the second power supply connector <NUM> which is configured to be connected to the DC-powered second-class electrical component <NUM>.

As shown in <FIG>, in this exemplary embodiment, the battery module <NUM> further includes a first AC/DC converter <NUM>, a first DC/AC converter <NUM> and a DC/DC converter <NUM>. The first AC/DC converter <NUM> is connected between the power connector <NUM> and the storage battery <NUM>. The first DC/AC converter <NUM> is connected between the storage battery <NUM> and the contact B2 of the first contact set. The DC/DC converter <NUM> is connected between the storage battery <NUM> and the contact C2 of the second contact set.

The first switch <NUM> is configured to connect the power connector <NUM> to the second power supply connectors <NUM> (namely, the contact B1 makes contact with the contact B3, and the contact C1 makes contact with the contact C3) in a case that the power connector <NUM> is in a power-on state; and the first switch <NUM> is configured to connect the storage battery <NUM> to the second power supply connectors <NUM> (namely, the contact B2 makes contact with the contact B3, and the contact C2 makes contact with the contact C3) in a case that the power connector <NUM> is in a power-off state. By arranging the first switch, connection of the power connector <NUM>, the storage battery <NUM> and the second power supply connector <NUM> can be automatically switched according to a condition whether the power connector <NUM> is powered on or not, and therefore the convenience in use can be improved.

As shown in <FIG>, in this exemplary embodiment, the power supply system further includes a second AC/DC converter <NUM>. The second AC/DC converter <NUM> is connected to the first power supply connector <NUM> and configured to be connected to the DC-powered first-class electrical component <NUM>. The AC-powered first-class electrical component <NUM> is directly connected to the first power supply connector <NUM>. The contact C1 of the second contact set is connected to the power connector <NUM> through the second AC/DC converter <NUM> and the first power supply connector <NUM>. Electric energy can be conveniently supplied to the DC-powered electrical components through the second AC/DC converter <NUM>.

The schematic explanation of the working process of the power supply system is the same as that of the working process of the power supply system shown in <FIG>, so it is not repeated herein.

<FIG> is a schematic circuit diagram of a power supply system for a medical X-ray imaging device of yet another exemplary embodiment. The power supply system shown in <FIG> is the same as or similar to the power supply system shown in <FIG>, and is not repeated herein, and the difference is as follows.

As shown in <FIG>, in this exemplary embodiment, the battery module <NUM> is an uninterruptible power supply. A second-class electrical component of the medical X-ray imaging device can be divided into a second-class electrical component needing limitation on operating power in power off and a second-class electrical component not needing limitation on operating power in power off according to, for example, the maximum operating power in operation. The maximum operating power of the second-class electrical component needing limitation on operating power in power off is greater than the maximum output power of the uninterruptible power supply, for example, the second-class electrical component is an X-ray generator, the exposure power of the second-class electrical component is greater than the maximum output power of the uninterruptible power supply, and the power for maintaining the power-on state is less than or equal to the maximum output power of the uninterruptible power supply. The maximum operating power of the second-class electrical component not needing limitation on operating power in power off is less than or equal to the maximum output power of the uninterruptible power supply.

As shown in <FIG>, in this exemplary embodiment, the power supply system further includes a second switch <NUM> (only a contact end of the second switch is drawn in <FIG>) and a third power supply connector <NUM>. The third power supply connector <NUM> is configured to be connected to an AC-powered second-class electrical component <NUM> needing limitation on operating power in power off in second-class electrical component. An AC-powered second-class electrical component <NUM> not needing limitation on operating power in power off is directly connected to the second power supply connectors <NUM>. The second switch <NUM> is controlled by the power connector <NUM>, for example, the second switch is a relay, but it is not limited to this. In the contact end of the second switch <NUM>, a contact D1 is connected to the power connector <NUM>, a contact D2 is connected to the second power supply connectors <NUM>, and a contact D3 is connected to the third power supply connector <NUM>. The second switch <NUM> is configured to connect the power connector <NUM> to the third power supply connector <NUM> in a case that the power connector <NUM> is in the power-on state (namely the contact D1 makes contact with the contact D3). The second switch <NUM> is configured to connect the second power supply connectors <NUM> to the third power supply connector <NUM> in a case that the power connector <NUM> is in the power-off state (namely the contact D2 makes contact with the contact D3). In a case that the second power supply connector <NUM> is connected to the third power supply connector <NUM>, the AC-powered second-class electrical component <NUM> needing limitation on operating power can only start a function that the operating power is less than or equal to the maximum output power of the uninterruptible power supply. For example, the X-ray generator can only maintain the power-on state and cannot be exposed. By arranging the uninterruptible power supply, the circuit can be simplified, and the stability of the power supply system can be improved. By arranging the second switch <NUM> and the third power supply connector <NUM>, a situation that the maximum output power of the uninterruptible power supply limits the operating power of the electrical components in a case that the power connector <NUM> is in the power-on state can be avoided.

As shown in <FIG>, in this exemplary embodiment, the power supply system further includes a monitoring module <NUM>. The monitoring module <NUM> is configured to detect an on-off state of the contact end of the second switch <NUM> and transmit an operating power limiting signal in a case of detecting that the second switch <NUM> connects the second power supply connectors <NUM> to the third power supply connector <NUM>. A control system for a medical X-ray imaging device is configured to control the second-class electrical component needing limitation on operating power in power off to only implement a function that the power is less than a set threshold (the maximum output power of the uninterruptible power supply is not exceeded) according to the operating power limiting signal. For example, the X-ray generator can only maintain the power-on state and cannot be exposed. Therefore, a situation that the device is damaged because of forcibly operating a function that the power is greater than the maximum output power of the uninterruptible power supply in a case that the power connector <NUM> is in the power-off state can be prevented.

The present utility model further provides a medical X-ray imaging device. In one exemplary embodiment, the medical X-ray imaging device includes any one of the abovementioned power supply systems. The electrical components of the medical X-ray imaging device are divided into the first-class electrical component and the second-class electrical component according to the time for restarting; the restarting time of the first-class electrical component is less than a preset time threshold; and the restarting time of the second-class electrical component is greater than or equal to the preset time threshold. The power supply system for the medical X-ray imaging device can effectively reduce the time for reconnecting the medical X-ray imaging device to the power supply to recover to the normal working state.

In this exemplary embodiment, the medical X-ray imaging device is a movable C-shaped arm X-ray machine, and second-class electrical component of the movable C-shaped arm X-ray machine includes an X-ray generator, a computer, a collimator and a micro-control unit; and the X-ray generator belongs to the second-class electrical component needing limitation on operating power in power off.

It is to be understood that, although this description is described according to each embodiment, each embodiment may not include only one independent technical solution. The narrative mode of this description is merely for clarity. This description should be considered as a whole by a person skilled in the art, and the technical solution in each embodiment may also be properly combined, to form other embodiments that can be understood by a person skilled in the art.

Claim 1:
A power supply system for a medical X-ray imaging device, comprising:
a power connector (<NUM>) configured to be connected to a power grid;
a first power supply connector (<NUM>) connected to the power connector (<NUM>), the first power supply connector (<NUM>) being configured to be connected to a first-class electrical component of the medical X-ray imaging device;
a battery module (<NUM>) connected to the power connector (<NUM>), the battery module (<NUM>) being provided with a storage battery (<NUM>), and the battery module (<NUM>) being configured to acquire electric energy from the power grid through the power connector (<NUM>) to charge the storage battery (<NUM>); and
a second power supply connector (<NUM>) connected to the battery module (<NUM>), the second power supply connector (<NUM>) being configured to be connected to a second-class electrical component of the medical X-ray imaging device,
characterized in that the battery module (<NUM>) comprises a first switch (<NUM>) and is configured to connect any one of the power connector (<NUM>) and the storage battery (<NUM>) to the second power supply connector (<NUM>) in a switchable mode, wherein the first switch (<NUM>) is controlled by the power connector (<NUM>); a contact end of the first switch (<NUM>) is connected to the power connector (<NUM>), the storage battery (<NUM>) and the second power supply connector (<NUM>); the first switch (<NUM>) is configured to connect the power connector (<NUM>) to the second power supply connector (<NUM>) in a case that the power connector (<NUM>) is in a power-on state; and the first switch (<NUM>) is configured to connect the storage battery (<NUM>) to the second power supply connector (<NUM>) in a case that the power connector (<NUM>) is in a power-off state.