Power supply device with uninterruptible power supply during battery replacement and electric equipment

Abstract

The utility model provides an uninterruptible power supply device for battery replacement and electric equipment, and the device comprises a first battery jack which is used for the access of a first battery; the second battery socket is used for accessing a second battery; a first static contact of the large-current relay is connected with the first positive electrode end, and a second static contact of the large-current relay is connected with the second positive electrode end; the battery positive electrode end of the voltage stabilizing module is connected with the movable contact of the large-current relay, the battery negative electrode end of the voltage stabilizing module is connected with the first negative electrode end and the second negative electrode end, and the voltage stabilizing module further comprises a voltage stabilizing capacitor, a power supply positive electrode end and a power supply negative electrode end; the voltage stabilizing capacitor is used for supplying power at the switching moment when the first battery or the second battery is switched to supply power, and the power supply anode end and the power supply cathode end are respectively connected with the electric equipment to form a power supply loop. According to the utility model, power is not interrupted when the two batteries are switched, and the use efficiency of electric equipment in production is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery replacement, in particular to a power supply device and an electric device capable of being powered off when replacing a battery. Background Art

[0002] Composite robots generally include four major components: automatic navigation vehicles (hereinafter referred to as: AGV (Automated Guided Vehicle)), robotic arms, vision modules, and grippers. They are important components for realizing automatic handling and loading and unloading in modern smart factories. Its power supply system is provided by batteries. Due to the compact structure of composite robots, the installation space of batteries is small, and the volume and battery capacity are limited. Regarding the charging and battery life issues of composite robots / AGVs, there are two methods: automatic charging during operation and manual charging when the battery is replaced during shutdown. Automatic charging during operation: When the composite robot / AGV is running and the battery is low or idle, it drives to the automatic charging point and uses the automatic charging pile for automatic charging; manual charging when the battery is replaced during shutdown: After the AGV is shut down, a fully charged battery is manually replaced, and the low-battery battery is manually charged.

[0003] During operation, automatic charging requires the composite robot / AGV to travel to an automatic charging point and use an automatic charging pile to charge, which affects work efficiency and takes a long time to charge. Although the battery can be replaced with a fully charged battery during shutdown, saving the long charging time, the composite robot / AGV equipment needs to be shut down and go through the process of "shutdown-replace fully charged battery-restart". Shutdown will cause the communication between the upstream and downstream equipment in the factory and the composite robot / AGV to be disconnected, causing data monitoring interruption and unnecessary alarms. After restarting, the composite robot / AGV needs to be repositioned and related operations need to be performed, which has certain requirements on the technical level of the operator and has a great impact on the factory's production efficiency. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a power supply device and electrical equipment that can replace batteries without interrupting power supply, which can improve the use efficiency of the electrical equipment in production when switching between two batteries.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A power supply device that can replace batteries without interruption, the device comprising: a first battery socket, the first battery socket is used to connect a first battery; a second battery socket, the second battery socket is used to connect a second battery; a high-current relay, the first static contact of the high-current relay is connected to the first positive terminal of the first battery socket, and the second static contact of the high-current relay is connected to the second positive terminal of the second battery socket; a stable voltage module, the battery positive terminal of the stable voltage module is connected to the moving contact of the high-current relay, the battery negative terminal of the stable voltage module is connected to the first negative terminal of the first battery socket and the second negative terminal of the second battery socket, the stable voltage module also includes a voltage-stabilizing capacitor, a positive power supply terminal and a negative power supply terminal, the voltage-stabilizing capacitor is used to supply power at the switching moment of switching between the first battery or the second battery for power supply, and the positive power supply terminal and the negative power supply terminal are respectively connected to electrical equipment to form a power supply circuit.

[0007] In addition, the power supply device for replacing batteries without interrupting power supply according to the utility model may also have the following additional technical features:

[0008] According to an embodiment of the utility model, the device further includes: a first anti-reverse diode, wherein the first anti-reverse diode is arranged between the first positive terminal of the first battery socket and the first static contact of the high-current relay.

[0009] According to an embodiment of the utility model, the device further comprises: a freewheeling diode, and the freewheeling diode is reversely connected to the coil of the high-current relay.

[0010] According to one embodiment of the utility model, the device also includes: the device also includes: a battery selection knob, the first group of contacts of the battery selection knob is arranged between the coil of the high current relay and the stable voltage module, the battery selection knob has two gears, when the battery selection knob is switched to the first gear, the first group of contacts is disconnected, and the first battery supplies power to the electrical equipment; when the battery selection knob is switched to the second gear, the first group of contacts is closed, and the second battery supplies power to the electrical equipment.

[0011] According to one embodiment of the utility model, the device also includes: a controller, the controller is used to control the battery selection knob to be in a first gear position or a second gear position, a second group of contacts of the battery selection knob is arranged between the controller and the positive end of the battery switch of the first battery, and a third group of contacts of the battery selection knob is arranged between the controller and the positive end of the battery switch of the second battery, when the battery selection knob is switched to the first gear position, the second group of contacts is closed and the third group of contacts is disconnected; when the battery selection knob is switched to the second gear position, the second group of contacts is disconnected and the third group of contacts is closed.

[0012] According to one embodiment of the utility model, the device also includes: a switching knob, one end of the switching knob is connected to the moving contact of the high-current relay, and the other end of the switching knob is connected to the second positive terminal of the second battery socket through the fourth group of contacts of the battery selection knob, and a group of normally open contacts is arranged on the switching knob, wherein when the battery selection knob is switched to the first gear, the fourth group of contacts is disconnected; when the battery selection knob is switched to the second gear, the fourth group of contacts is closed.

[0013] According to an embodiment of the present invention, the switching knob is a power on knob or a release knob.

[0014] According to one embodiment of the utility model, the device also includes: a charging interface, which is respectively connected to the first positive terminal of the first battery socket and the second positive terminal of the second battery socket, and the charging interface is used to connect to an external power supply to charge the first battery or the second battery.

[0015] Furthermore, the device also includes: a second anti-reverse diode, which is arranged between the second positive terminal of the second battery socket and the charging interface.

[0016] In addition, to achieve the above-mentioned purpose, the utility model also provides an electrical device.

[0017] An electrical device, comprising the power supply device as described above which can replace batteries without interrupting power supply.

[0018] Beneficial effects of the utility model:

[0019] The utility model discloses a power supply device capable of switching power supply without interruption when replacing batteries, wherein a first static contact of a high-current relay is connected to a first positive terminal of a first battery socket, a second static contact of the high-current relay is connected to a second positive terminal of a second battery socket, and a moving contact of the high-current relay is switched to close with the first static contact or the second static contact, so as to switch power supply of the first battery or the second battery; a voltage-stabilizing capacitor is arranged in a voltage stabilizing module for supplying power at the switching moment of switching power supply of the first battery or the second battery, so that power supply can be kept without interruption when switching two batteries, thereby improving the use efficiency of electrical equipment in production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a power supply device for replacing batteries without interrupting power supply according to a specific embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the connection between the coil and the freewheeling diode of a high current relay of a specific embodiment of the utility model;

[0022] Reference numerals: 10-first battery socket, 11-first positive terminal, 12-first negative terminal, 20-second battery socket, 21-second positive terminal, 22-second negative terminal, 30-high current relay, 31-first static contact, 32-second static contact, 33-moving contact, 34-coil, 40-stable voltage module, 50-first battery, 60-second battery, 70-first terminal row, 80-second terminal row, 90-freewheeling diode, 101-first group of contacts of battery selection knob, 102- The second set of contacts of the battery selection knob, 103-the third set of contacts of the battery selection knob, 104-the fourth set of contacts of the battery selection knob, 1100-controller, 1200-controller socket, 1300-power on knob, 1400-release knob, 1500-automatic charging interface, 1600-manual charging interface, 1700-automatic charging contactor, 1800-first anti-reverse diode, 1900-second anti-reverse diode, 2000-third anti-reverse diode, 2100-fourth anti-reverse diode. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1As shown, the power supply device for replacing batteries without interruption in the embodiment of the utility model comprises a first battery socket 10, a second battery socket 20, a high current relay 30 and a voltage stabilization module 40, wherein the first battery socket 10 is used to connect the first battery 50; the second battery socket 20 is used to connect the second battery 60; the first static contact 31 of the high current relay 30 is connected to the first positive terminal 11 of the first battery socket, and the second static contact 32 of the high current relay 30 is connected to the second positive terminal 21 of the second battery socket; the battery positive terminal +Vi of the voltage stabilization module 40 is connected to the moving contact 33 of the high current relay 30, and the battery negative terminal -Vi of the voltage stabilization module 40 is connected to the first negative terminal 12 of the first battery socket and the second negative terminal 22 of the second battery socket. The voltage stabilization module 40 also includes a voltage stabilization capacitor, a positive power supply terminal -Vo and a negative power supply terminal +Vo. The voltage stabilization capacitor is used to supply power at the switching moment of switching the power supply of the first battery 50 or the second battery 60, and the positive power supply terminal and the negative power supply terminal are respectively connected to the electrical equipment to form a power supply circuit.

[0025] It should be noted that the power supply device that can replace the battery without interruption only needs to control the closing of the moving contact of the high-current relay and the first static contact or the second moving contact to realize the switching of the two batteries, which can avoid the electrical equipment needing to be charged or shut down for battery replacement due to low power of a certain battery, which affects the sustainability of production work; and the power supply device that can replace the battery without interruption can not only use the voltage-stabilizing capacitor in the stable voltage module to supply power at the moment of switching batteries, but also directly add a capacitor between the common moving contact of the high-current relay and the stable voltage module to supply power at the moment of switching batteries, thereby ensuring that the electrical equipment is powered off when switching batteries, thereby improving the working efficiency of the electrical equipment.

[0026] It is easy to understand that the electric device can be a composite robot or an AGV device, such as a robotic arm, a visual module, a gripper, etc., and this embodiment does not limit this. The first battery and the second battery can be lithium batteries or other types of batteries that meet the use requirements of the electric device, and this embodiment does not limit this.

[0027] In one embodiment of the present invention, Figure 1 As shown, the moving contact 33 of the high-current relay 30 can be connected to the positive battery terminal of the voltage stabilization module 40 through the first terminal row 70, the first negative terminal 12 of the first battery socket and the second negative terminal 22 of the second battery socket can be connected to the second terminal row 80, and the negative battery terminal of the voltage stabilization module 40 is connected to the first negative terminal 12 of the first battery socket and the second negative terminal 22 of the second battery socket through the second terminal row 80.

[0028] In one embodiment of the utility model, in order to solve the problem that when switching batteries, the coil 34 of the high current relay 30 will generate reverse electromotive force at the moment of power failure, causing system circuit fluctuations, a freewheeling diode 90 (such as Figure 2 As shown), it is used to consume the reverse current caused by the reverse electromotive force to smooth the current in the power supply device and reduce the fluctuation of the current in the power supply device. The freewheeling diode can be a Schottky freewheeling diode or other diodes that can consume electromotive force, and this embodiment is not limited.

[0029] In one embodiment of the present invention, Figure 1-2 As shown, the power supply device that can replace the battery without interruption also includes a battery selection knob, and the battery selection knob can be rotated to control the attraction of the coil 34 of the high-current relay 30 to achieve the connection and disconnection of the moving contact 33 of the high-current relay 30 and the two battery circuits.

[0030] Specifically, Figure 1-2 As shown, the first group of contacts 101 of the battery selection knob are arranged between the coil 34 of the high current relay 30 and the stabilized voltage module 40. The battery selection knob has two gears. When the battery selection knob is switched to the first gear, the first group of contacts 101 is disconnected to de-energize the coil 34 of the high current relay 30, the moving contact 33 of the high current relay 30 is closed with the first static contact 31, and the first battery 50 supplies power to the electrical equipment; when the battery selection knob is switched to the second gear, the first group of contacts 101 is closed to energize the coil 34 of the high current relay 30, the moving contact 33 of the high current relay 30 is closed with the second static contact 32, and the second battery 60 supplies power to the electrical equipment.

[0031] In one embodiment of the present invention, Figure 1 As shown, the power supply device that can replace the battery without interruption can also include a controller 1100. The controller 1100 can be used to control the battery selection knob to be in the first gear or the second gear. A second group of contacts 102 of the battery selection knob is arranged between the controller 1100 and the positive terminal POWER+ of the battery switch of the first battery 50. A third group of contacts 103 of the battery selection knob is arranged between the controller 1100 and the positive terminal POWER+ of the battery switch of the second battery 60. When the battery selection knob is switched to the first gear, the second group of contacts 102 is closed and the third group of contacts 103 is opened; when the battery selection knob is switched to the second gear, the second group of contacts 102 is opened and the third group of contacts 103 is closed.

[0032] like Figure 1As shown, the controller 1100 can be connected to the first battery 50 through the controller socket 1200 and the first battery socket 10, and connected to the second battery 60 through the controller socket 1200 and the second battery socket 20; the controller 1100 can also transmit signals with the first battery 50 and the second battery 60 through RS485 communication, and a shielded cable is used to connect the controller socket 1200 and the first battery socket 10 and the second battery socket 20 to avoid external interference affecting communication; the controller 1100 also includes a group of normally open dry contacts (battery switch 1N and battery switch 1O), and the battery switch 1N can be connected through the ACC (accessory, enable) terminal of the controller socket 1200 The ACC end of the first battery socket 10 is connected to the ACC of the battery switch of the first battery 60, and is connected to the ACC of the battery switch of the second battery 60 through the ACC end of the controller socket 1200 and the ACC end of the second battery socket 20. The battery switch 1O can be connected to the positive terminal POWER+ of the battery switch of the first battery 50 through the second group of contacts 102 of the battery selection knob, and is connected to the positive terminal POWER+ of the battery switch of the second battery 60 through the third group of contacts 103 of the battery selection knob. When the battery switch 1N and the battery switch 1O are short-circuited, the ACC and POWER+ of the first battery 50 or the second battery 60 can be short-circuited to provide power to the electrical equipment.

[0033] In one embodiment of the utility model, the moving contact 33 of the high current relay 30 and the first static contact 31 are in a normally closed state, and the moving contact 33 of the high current relay 30 and the second static contact 32 are in a normally open state. When the electrical device is in the off state, if the first battery 50 supplies power to the electrical device, the electric energy of the first battery 50 can be transmitted to the first terminal block 70 through the first static contact 31 and the moving contact 33 of the high current relay 30, and the power on / off / release function of the electrical device is not affected; when the second battery 60 is used to power the electrical device, since the second static contact 32 and the moving contact 33 of the high current relay 30 are in a disconnected state, the power on / off / release function of the electrical device will be invalid due to the power supply being cut off. Therefore, it is necessary to further improve the power supply setting so that the electrical device can be normally powered on / off / released when powered by the second battery 60.

[0034] The power supply device that can replace the battery without interruption may also include a switching knob, one end of the switching knob is connected to the moving contact of the high-current relay, and the other end of the switching knob is connected to the second positive terminal of the second battery socket through the fourth group of contacts of the battery selection knob. A group of normally open contacts is arranged on the switching knob. The switching knob is used for the electrical equipment to adopt the second battery to power the power, and when the normally open main contact of the high-current relay is disconnected from the common main contact, the normally open contact of the switching knob is closed, so that the output power of the second battery is connected to the circuit of the power supply device so that the normally open main contact of the high-current relay is attracted to the common main contact, wherein when the battery selection knob is switched to the first gear, the fourth group of contacts is disconnected; when the battery selection knob is switched to the second gear, the fourth group of contacts is closed.

[0035] Specifically, the switch knob can be a power-on knob or a release knob, or two switch knobs (power-on knob 1300 and release knob 1400) can be provided for powering on and releasing the switch respectively (such as Figure 1 By providing a power on knob 1300 and a release knob 1400 in the power supply device, one end of which is connected to the moving contact 33 of the high current relay 30 and the other end of which is connected to the fourth group of contacts 104 of the battery selection knob, the power consumption device can realize the functions of release and power on and off regardless of whether it is powered by the first battery 50 or the second battery 60.

[0036] In one embodiment of the utility model, the power supply device for replacing the battery without interruption also includes a charging interface, which can be connected to the first positive terminal of the first battery socket and the second positive terminal of the second battery socket respectively, for connecting to an external power supply to charge the first battery or the second battery.

[0037] like Figure 1 As shown, the charging interface can be an automatic charging interface 1500 or a manual charging interface 1600, which is connected to the first positive terminal 11 of the first battery socket and the second positive terminal 11 of the second battery socket respectively, and is used to connect to an external power source to charge the first battery 50 or the second battery 60. Among them, an automatic charging contactor 1700 can be provided between the automatic charging interface 1500 and the first positive terminal 11 of the first battery socket and the second positive terminal 21 of the second battery socket to realize automatic charging.

[0038] In one embodiment of the utility model, in order to prevent the first battery and the second battery from charging each other during the battery switching process, an anti-reverse diode can be provided in the power supply device that does not interrupt power supply when the battery is replaced.

[0039] Specifically, Figure 1As shown, the first anti-reverse diode 1800 can be arranged between the first positive terminal 11 of the first battery socket and the first static contact 31 of the high current relay 30, and the second anti-reverse diode 1900 can be arranged between the second positive terminal 21 of the second battery socket and the charging interface to prevent the first battery 50 from charging the second battery 60; the third anti-reverse diode 2000 can be arranged between the second positive terminal 21 of the second battery socket and the second static contact 32 of the high current relay 30, and the fourth anti-reverse diode 2100 can be arranged between the first positive terminal 11 of the first battery socket and the charging interface to prevent the second battery 60 from charging the first battery 50.

[0040] The working principle of the power supply device capable of replacing batteries without interrupting power supply of the present invention is described below with reference to a specific embodiment.

[0041] When the battery powering the electrical device is low, it needs to be replaced with another fully charged battery. This can be divided into two situations:

[0042] I. Changing from the first battery to the second battery:

[0043] 1. When the electric device prompts that the power of the first battery in use is low on power, the electric device can be docked at a battery exchange station in standby mode; the second battery socket is removed from the battery compartment of the electric device (the first battery socket and the second battery socket are movably arranged in the battery compartment of the electric device), and connected with the second battery with full charge to be replaced, and the battery switch on the second battery is turned on. At this time, the electric device is still powered by the first battery.

[0044] 2. Turn the battery selection knob from the first position to the second position, so that the coil of the high-current relay is energized, and the moving contact and the first static contact change from the closed state to the open state. At the same time, the moving contact and the second static contact change from the open state to the closed state, and the power supply of the electrical equipment is switched from the first battery to the second battery. At the moment of switching, the voltage stabilizing capacitor in the voltage stabilizing module (if the capacity is not enough, it can be added separately in the circuit) ensures that the electrical equipment is powered on continuously. The capacity of the capacitor depends on the specific situation.

[0045] 3. Turn off the battery switch of the first battery, unplug the first battery from the first battery socket, take the first battery out of the battery compartment, and then put the second battery socket and the second battery into the battery compartment to fix them. The replacement of the first battery with the second battery is completed without powering off.

[0046] Ⅱ. Changing from the second battery to the first battery:

[0047] 4. When the power-consuming device indicates that the second battery in use is low on power, the power-consuming device can be parked at the battery exchange station in standby mode. Take the first battery socket out of the battery compartment of the power-consuming device, plug it into the fully charged first battery to be replaced, and turn on the battery switch on the first battery. At this time, the power-consuming device is still powered by the second battery.

[0048] 5. Turn the battery selection knob from the second position to the first position, so that the coil of the high-current relay loses power, the moving contact and the second static contact change from closed to open, and at the same time, the moving contact and the first static contact change from open to closed, and the power supply of the electrical equipment is switched from the second battery to the first battery. At the moment of switching, the voltage-stabilizing capacitor in the voltage stabilizing module (if the capacity is not enough, it can be added separately in the circuit) ensures that the electrical equipment is powered on. The size of the capacitor depends on the specific situation; when switching, the reverse electromotive force formed by the loss of power in the coil of the high-current relay is consumed by the Schottky freewheeling diode to smooth the current in the power supply device.

[0049] 6. Turn off the battery switch of the second battery, unplug the second battery from the second battery socket, take the second battery out of the battery compartment, and then put the first battery socket and the first battery into the battery compartment to fix them. The second battery can be replaced with the first battery without powering off.

[0050] In this way, the cyclic switching between the first battery and the second battery is completed, and the power-consuming device will not lose power. Since the power-consuming device does not need to be shut down and restarted when replacing the battery, it will not cause the disconnection of communication between the upstream and downstream devices and the power-consuming device, will not cause data loss and unnecessary alarms, and the operator does not need to relocate the power-consuming device and other related operations, which greatly improves the production efficiency of the power-consuming equipment factory application project.

[0051] According to the power supply device for replacing batteries without interruption in the embodiment of the utility model, the first static contact of the high-current relay is connected to the first positive terminal of the first battery socket, the second static contact of the high-current relay is connected to the second positive terminal of the second battery socket, and the moving contact of the high-current relay is switched to close with the first static contact or the second static contact to realize switching of the first battery or the second battery for power supply; a voltage-stabilizing capacitor is arranged in the voltage stabilization module to provide power at the switching moment of switching between the first battery and the second battery for power supply, so that power can be switched without interruption when the two batteries are switched, thereby improving the use efficiency of electrical equipment in production.

[0052] In addition, to achieve the above-mentioned purpose, the utility model also proposes an electrical device, including the power supply device as described above that can replace the battery without interruption of power supply.

[0053] The electric equipment according to the embodiment of the utility model can keep power supply when switching between two batteries, thereby improving the utilization efficiency of the electric equipment in production.

[0054] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A power supply device that can replace batteries without interruption of power supply, characterized in that: The device comprises: A first battery socket, the first battery socket is used to connect a first battery; A second battery socket, the second battery socket is used to connect a second battery; A high-current relay, wherein a first static contact of the high-current relay is connected to a first positive terminal of the first battery socket, and a second static contact of the high-current relay is connected to a second positive terminal of the second battery socket; A voltage stabilizing module, wherein the positive battery terminal of the voltage stabilizing module is connected to the moving contact of the high-current relay, and the negative battery terminal of the voltage stabilizing module is connected to the first negative terminal of the first battery socket and the second negative terminal of the second battery socket. The voltage stabilizing module also includes a voltage stabilizing capacitor, a positive power supply terminal and a negative power supply terminal. The voltage stabilizing capacitor is used to supply power at the switching moment of switching the first battery or the second battery for power supply. The positive power supply terminal and the negative power supply terminal are respectively connected to electrical equipment to form a power supply circuit.

2. The power supply device for replacing batteries without interruption according to claim 1, characterized in that: The device also includes: A first anti-reverse diode is arranged between a first positive terminal of the first battery socket and a first static contact of the high-current relay.

3. The power supply device for replacing batteries without interruption according to claim 1, characterized in that: The device also includes: A freewheeling diode is reversely connected to the coil of the high-current relay.

4. The power supply device for replacing batteries without interruption according to claim 1, characterized in that: The device also includes: A battery selection knob, wherein the first group of contacts of the battery selection knob is arranged between the coil of the high current relay and the voltage stabilization module, and the battery selection knob has two gears. When the battery selection knob is switched to the first gear, the first group of contacts is disconnected, and the first battery supplies power to the electrical device; when the battery selection knob is switched to the second gear, the first group of contacts is closed, and the second battery supplies power to the electrical device.

5. The power supply device for replacing batteries without interruption according to claim 4, characterized in that: The device also includes: A controller, the controller is used to control the battery selection knob to be in a first gear or a second gear, a second group of contacts of the battery selection knob is arranged between the controller and the positive terminal of the battery switch of the first battery, and a third group of contacts of the battery selection knob is arranged between the controller and the positive terminal of the battery switch of the second battery, when the battery selection knob is switched to the first gear, the second group of contacts is closed and the third group of contacts is disconnected; when the battery selection knob is switched to the second gear, the second group of contacts is disconnected and the third group of contacts is closed.

6. The power supply device for replacing batteries without interruption according to claim 5, characterized in that: The device also includes: A switch knob, one end of the switch knob is connected to the moving contact of the high-current relay, and the other end of the switch knob is connected to the second positive terminal of the second battery socket through the fourth group of contacts of the battery selection knob. A group of normally open contacts is provided on the switch knob, wherein when the battery selection knob is switched to the first gear, the fourth group of contacts is disconnected; when the battery selection knob is switched to the second gear, the fourth group of contacts is closed.

7. The power supply device for replacing batteries without interruption according to claim 6, characterized in that: The switching knob is a power on knob or a release knob.

8. The power supply device for replacing batteries without interruption according to claim 1, characterized in that: The device also includes: A charging interface, wherein the charging interface is respectively connected to the first positive terminal of the first battery socket and the second positive terminal of the second battery socket, and the charging interface is used to connect to an external power source to charge the first battery or the second battery.

9. The power supply device for replacing batteries without interruption according to claim 8, characterized in that: The device also includes: A second anti-reverse diode is arranged between the second positive terminal of the second battery socket and the charging interface.

10. An electrical device, characterized in that: The electrical equipment comprises a power supply device capable of being powered on without interruption by replacing batteries according to any one of claims 1 to 9.

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