Pre-charging control apparatus, battery system and movable device

Abstract

A pre-charging control apparatus (124), a battery system (12) and a movable device. The battery system (12) comprises a battery (121), a component to be pre-charged (122) and a power-on self-starting device (123), wherein the battery (121) can supply power to said component (122). The pre-charging control apparatus (124) comprises: a switch unit (1241), which is connected between the battery (121) and the power-on self-starting device (123); and a trigger unit (1242), which is connected to the switch unit (1241). Before the pre-charging of said component (122) is completed, the trigger unit (1242) is in a non-triggered state, so that the switch unit (1241) is in an open state, thereby disconnecting a power supply circuit between the battery (121) and the power-on self-starting device (123); and when the pre-charging of said component (122) is completed, the trigger unit (1242) is in a triggered state, so that the switch unit (1241) is in a closed state, thereby connecting the power supply circuit between the battery (121) and the power-on self-starting device (123).

Description

Precharge control device, battery system and portable device Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a pre-charge control device, a battery system and a movable device. Background Art

[0002] In a battery system that includes a battery and a component to be pre-charged, the component to be pre-charged can be pre-charged via the battery. Pre-charging is complete when the voltage of the component to be pre-charged reaches a certain voltage threshold. However, if the battery is connected to both the component to be pre-charged and a power-on self-starting device, the power-on self-starting device will divide the voltage of the component to be pre-charged, preventing the voltage of the component to be pre-charged from rising to the voltage threshold required for pre-charging to complete, thus causing pre-charging to fail.

[0003] Summary of the Invention

[0004] In a first aspect, the present application provides a pre-charging control device for a battery system of a movable device, the battery system comprising a battery, a component to be pre-charged and a power-on self-starting device, the battery being capable of supplying power to the component to be pre-charged; the pre-charging control device comprising: a switch unit connected between the battery and the power-on self-starting device; a trigger unit connected to the switch unit; before the pre-charging of the component to be pre-charged is completed, the trigger unit is in a non-triggering state, so that the switch unit is in a disconnected state and disconnects the power supply circuit between the battery and the power-on self-starting device; when the pre-charging of the component to be pre-charged is completed, the trigger unit is in a triggering state, so that the switch unit is in a closed state and conducts the power supply circuit between the battery and the power-on self-starting device.

[0005] In a second aspect, the present application provides a battery system, comprising: a battery; a component to be pre-charged, connected to the battery; a power-on self-starting device; and a pre-charge control device of the first aspect, the pre-charge control device being connected between the battery and the power-on self-starting device.

[0006] In a third aspect, the present application provides a movable device, comprising: a movable body; and the battery system of the second aspect, wherein the battery system is mounted on the movable body.

[0007] In an embodiment of the present application, a switch unit is provided between the battery and the power-on self-starting device, and a trigger unit connected to the switch unit is provided. Before the pre-charging of the component to be pre-charged is completed, the trigger unit is in a non-triggering state, thereby placing the switch unit in a disconnected state to disconnect the power supply circuit between the battery and the power-on self-starting device. In this way, before the pre-charging of the component to be pre-charged is completed, the battery will not supply power to the power-on self-starting device, thereby the power-on self-starting device will not divide the voltage of the component to be pre-charged, thereby avoiding pre-charging failure caused by the voltage division of the power-on self-starting device. When the pre-charging of the component to be pre-charged is completed, the trigger unit is in a triggering state, thereby placing the switch unit in a closed state to conduct the power supply circuit between the battery and the power-on self-starting device. In this way, after the pre-charging is completed, the battery can supply power to the power-on self-starting device normally, thereby enabling the power-on self-starting device to be powered on and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0009] FIG1 is a schematic diagram of a movable device according to an embodiment of the present application.

[0010] FIG. 2 is a schematic diagram of a battery system in the related art.

[0011] FIG3 is a schematic diagram of a battery system according to an embodiment of the present application.

[0012] FIG4 is a schematic diagram of a pre-fill control device according to an embodiment of the present application.

[0013] FIG5 is a circuit diagram of a pre-charge control device according to an embodiment of the present application.

[0014] FIG6 is a circuit diagram of a pre-charge control device according to another embodiment of the present application.

[0015] FIG7 is a circuit diagram of a pre-charge control device according to another embodiment of the present application.

[0016] FIG8 is a schematic diagram of a pre-charge control device using software control according to an embodiment of the present application.

[0017] FIG9 is a schematic diagram of a battery system in related art.

[0018] FIG10 is a schematic diagram of a battery system according to an embodiment of the present application.

[0019] FIG. 11 is a schematic diagram of a power switching device according to an embodiment of the present application.

[0020] FIG. 12 is a schematic diagram of a power switching device including two switch loops according to an embodiment of the present application.

[0021] FIG13 is a schematic diagram of a power switching device including three switch loops according to an embodiment of the present application.

[0022] 14a and 14b are schematic diagrams of a power switching device including a circuit breaker according to an embodiment of the present application.

[0023] FIG15 is a schematic diagram of a power switching device including a switch assembly according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0026] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a", "said" and "the" used in this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items. Unless otherwise indicated, similar words such as "front", "rear", "bottom" and / or "top" are only for ease of explanation and are not limited to one position or one spatial orientation. Similar words such as "connected" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. "Multiple" means at least two.

[0027] As shown in FIG1 , the present application provides a movable device 10 , which includes a movable body 11 and a battery system 12 . The battery system 12 is mounted on the movable body 11 .

[0028] The movable device 10 includes devices that can operate or move in areas such as land, water, and air. As an example, the movable device 10 can be a land movable device, such as a car, truck, etc. As another example, the movable device 10 can be an aircraft, such as a drone, an airship, etc. As yet another example, the movable device 10 refers to a mobile device that can operate or move on water, and can be used for navigation, diving, entertainment or other water activities. For example, a water movable device can be various types of water transportation vehicles such as commercial ships, passenger ships, yachts, fishing boats, sailboats, and civilian ships. It can also be water inspection equipment, water management equipment, water environment monitoring equipment, and other equipment that can move in water. It can also be underwater detection ships and other equipment that can operate underwater. It can also be a city's sightseeing ferry, a scenic area's pleasure cruise ship, a private yacht, a leisure and entertainment boat, etc. This application does not impose any restrictions on this.

[0029] 2 , the battery system 12 may include a battery 121, a component to be pre-charged 122, and a power-on self-starting device 123. The component to be pre-charged 122 and the power-on self-starting device 123 are respectively connected to the battery 121. The battery 121 can pre-charge the component to be pre-charged 122 and can supply power to the power-on self-starting device 123 so that the power-on self-starting device 123 is powered and operates. In some embodiments, the component to be pre-charged 122 includes a motor, which can provide propulsion for the movable device 10 to drive the movable device 10 forward, backward, and turn. The power-on self-starting device 123 can include a device such as a direct current to direct current converter (DC-DC) or an inverter that can automatically start after power is applied. In an example in which the power-on self-starting device 123 is a DC-DC, the battery 121 can output electrical energy to the DC-DC so that the DC-DC charges an external battery. The battery can power the electronic control on the movable device 10, which can be used to control the output power of the motor. In an example where the power-on self-starting device 123 is an inverter, the battery 121 can output electrical energy to the inverter so that the inverter can supply power to electrical appliances such as air conditioners, refrigerators, and microwave ovens.

[0030] As battery 121 pre-charges component 122, the voltage of component 122 gradually increases. When the voltage of component 122 reaches a certain voltage threshold, pre-charging of component 122 is determined to be complete. However, when battery 121 is simultaneously connected to component 122 and self-starting device 123, self-starting device 123 divides the voltage of component 122, preventing the voltage of component 122 from rising to the voltage threshold required for pre-charging, resulting in pre-charging failure.

[0031] Based on this, referring to FIG3 , the present application adds a pre-charge control device 124 to the battery system 12 to control the on / off of the power supply circuit between the battery 121 and the power-on self-starting device 123. Before the pre-charge of the pre-charge component 122 is completed, the pre-charge control device 124 can control the power supply circuit between the battery 121 and the power-on self-starting device 123 to be disconnected, thereby avoiding pre-charge failure due to the voltage division of the power-on self-starting device 123. When the pre-charge of the pre-charge component 122 is completed, the pre-charge control device 124 can control the power supply circuit between the battery 121 and the power-on self-starting device 123 to be connected, thereby allowing the power-on self-starting device 123 to be powered and work normally. The following is an example of an embodiment of the pre-charge control device 124.

[0032] The pre-charge control device 124 of the present application is used for the battery system 12 of the mobile device 10. The battery system 12 includes a battery 121, a component to be pre-charged 122, and a power-on self-starting device 123. The battery 121 can supply power to the component to be pre-charged 122. Referring to Figure 4, the pre-charge control device 124 includes:

[0033] The switch unit 1241 is connected between the battery 121 and the power-on self-starting device 123;

[0034] A trigger unit 1242 , the trigger unit 1242 is connected to the switch unit 1241 ;

[0035] Before the pre-charging of the pre-charged component 122 is completed, the trigger unit 1242 is in a non-triggering state, so that the switch unit 1241 is in an off state, thereby disconnecting the power supply circuit between the battery 121 and the power-on self-starting device 123;

[0036] When the pre-charging of the pre-charged component 122 is completed, the trigger unit 1242 is in a trigger state, so that the switch unit 1241 is in a closed state to conduct the power supply circuit between the battery 121 and the power-on self-starting device 123.

[0037] Among them, the switch unit 1241 can be electrically connected between the battery 121 and the power-on self-starting device 123. The power-on self-starting device 123 and the switch unit 1241 can be two physically independent hardware devices, or the switch unit 1241 can also be integrated at the front end of the power-on self-starting device 123.

[0038] The trigger unit 1242 can be electrically or communicatively connected to the switch unit 1241. The trigger unit 1242 can have two states: a triggered state and a de-triggered state. These two states can automatically switch in response to the pre-charge state of the pre-charged component 122. The pre-charged state of the pre-charged component 122 includes a pre-charged state and a pre-charged complete state. Before the pre-charge of the pre-charged component 122 is complete, the pre-charged component 122 is in the pre-charged state; after the pre-charge of the pre-charged component 122 is complete, the pre-charged component 122 is in the pre-charged complete state. Initially, the trigger unit 1242 can be in the de-triggered state. In response to the pre-charge completion of the pre-charged component 122, the trigger unit 1242 can automatically switch from the de-triggered state to the triggered state. The state of the switch unit 1241 can change based on the state of the trigger unit 1242. When the trigger unit 1242 is in the de-triggered state, the switch unit 1241 can automatically switch to the open state; when the trigger unit 1242 is in the triggered state, the switch unit 1241 can automatically switch to the closed state. In this way, there is no need to manually control the switch unit 1241 to open or close, which improves the control efficiency of the switch unit 1241 and reduces the labor cost and operation complexity of the pre-charge control.

[0039] Furthermore, if the switch unit 1241 is manually turned on and off, the user may forget to close the switch unit 1241 after pre-charging is complete. In this case, the connection path between the battery 121 and the self-starting device 123 remains disconnected, and the self-starting device 123 cannot obtain power from the battery 121. Loads connected to the self-starting device 123, such as electrical controls and lighting, cannot be powered and function, seriously affecting the normal operation and use of the mobile device 10.

[0040] In some embodiments, the state of the trigger unit 1242 is determined based on the duration of time the battery 121 is powered on. If the duration of time the battery 121 is powered on does not reach the preset duration, the trigger unit 1242 is in a non-triggered state. If the duration of time the battery 121 is powered on reaches the preset duration, the trigger unit 1242 is in a triggered state. The preset duration can be pre-set based on the duration required for pre-charging to complete. Assuming that the duration required for pre-charging to complete is T, the preset duration can be set to a value greater than or equal to T. The duration required for pre-charging of different types or models of components 122 to be pre-charged may be different. Therefore, the duration required for pre-charging of the component 122 to be pre-charged to complete can be pre-calculated based on factors such as the type and / or model of the component 122 to be pre-charged, and then the preset duration can be set based on the duration, thereby ensuring that the power supply circuit between the power-on self-starting device 123 and the battery 121 is only turned on when the pre-charging of the component 122 to be pre-charged is completed.

[0041] Several implementations of the trigger unit 1242 are described below with examples.

[0042] In some embodiments, referring to FIG. 5 , the trigger unit 1242 includes a delay element KT11, and the switch unit 1241 includes a first switch element KT12. Terminals A1 and A2 of the delay element KT11 are respectively connected to the positive output terminal Out+ and the negative output terminal Out- of the battery 121. Terminal B1 of the first switch element KT12 is connected to terminal A1 of the delay element KT11 connected to the positive output terminal Out+ of the battery 121. The other terminal B2 of the first switch element KT12 is connected to the positive input terminal IN+ of the power-on self-starting device 123.

[0043] The delay element KT11 can be a magnetic delay element (e.g., a coil) or a capacitive delay element (e.g., a capacitor). When the delay element KT11 is not powered, the trigger unit 1242 is in a non-triggered state, the first switch element KT12 is in a disconnected state, and the power supply circuit between the battery 121 and the power-on self-starting device 123 is disconnected. After the battery 121 is powered on, current flows from the positive output terminal Out+ of the battery 121 through the delay element KT11 to the negative output terminal Out- of the battery 121, and the delay element KT11 is powered. When the delay element KT11 is powered for a predetermined period of time, the trigger unit 1242 is in a triggered state, thereby closing the first switch element KT12. At this time, current can flow from the positive output terminal Out+ of the battery 121 through the first switching element KT12 to the positive input terminal IN+ of the power-on self-starting device 123, and then flow through the negative input terminal IN- of the power-on self-starting device 123 to the negative output terminal Out- of the battery 121. The power supply circuit between the battery 121 and the power-on self-starting device 123 is connected.

[0044] Optionally, the delay element KT11 and the first switching element KT12 can form a delay relay. For example, when the delay element KT11 is a magnetic delay element, the delay element KT11 and the first switching element KT12 can form an electromagnetic delay relay; when the delay element KT11 is a capacitive delay element, the delay element KT11 and the first switching element KT12 can form a capacitive delay relay.

[0045] This embodiment uses a delay element KT11 and a first switch element KT12 to realize automatic delayed power-on of the power-on self-starting device 123 after the pre-charge component 122 is pre-charged. The structure is simple and there is no need for the user to manually operate the first switch element KT12.

[0046] In other embodiments, referring to FIG6 , the trigger unit 1242 includes a delay element KT11 and a magnetic element KM11, and the switch unit 1241 includes a first switch element KT12 and a second switch element KM12. The delay element KT11 has two terminals A1 and A2 connected between the positive output terminal Out+ and the negative output terminal Out- of the battery 121, respectively. One terminal B1 of the first switch element KT12 is connected to the terminal A1 of the delay element KT11 connected to the positive output terminal Out+ of the battery 121. The other terminal B2 of the first switch element KT12 is connected to one terminal C2 of the magnetic element KM11. The other terminal C1 of the magnetic element KM11 is connected to the negative output terminal Out- of the battery 121. The second switch element KM12 is connected between the battery 121 and the power-on self-starting device 123.

[0047] Among them, the delay element KT11 can also be a magnetic delay element or a capacitive delay element. In some embodiments, the delay element KT11 and the magnetic element KM11 are both coils. In the embodiment shown in Figure 6, the delay element KT11 has a delay function, the magnetic element KM11 has no delay function, and the state change of the trigger unit is mainly determined by the delay element KT11. Of course, in other embodiments, the delay element KT11 and the magnetic element KM11 can also both have a delay function, and the state change of the trigger unit can be jointly determined by the delay element KT11 and the magnetic element KM11, and this application does not limit this. In the embodiment shown in Figure 6, when the delay element KT11 is not powered, the trigger unit 1242 is in a non-triggered state, the first switch element KT12 and the second switch element KM12 are both in a disconnected state, and the power supply circuit between the battery 121 and the power-on self-starting device 123 is disconnected. After battery 121 is powered on, current flows from the positive output terminal Out+ of battery 121 through delay element KT11 to the negative output terminal Out- of battery 121, energizing delay element KT11. When the energized duration of delay element KT11 reaches a preset value, trigger unit 1242 enters a triggering state, closing first switch element KT12. At this point, current can flow from the positive output terminal Out+ of battery 121 through first switch element KT12 to magnetic element KM11, and then to the negative output terminal Out- of battery 121, energizing magnetic element KM11. After the magnetic element KM11 is energized, the second switch element KM12 is turned on, and current can flow from the positive output terminal Out+ of the battery 121 to the positive input terminal IN+ of the power-on self-starting device 123, and then flow through the negative input terminal IN- of the power-on self-starting device 123 to the negative output terminal Out- of the battery 121, thereby connecting the power supply circuit between the battery 121 and the power-on self-starting device 123.

[0048] When the power required by the power-on self-starting device 123 is high, the contacts of the delay element KT11 may experience overcurrent. By providing a magnetic element KM11 and a second switch element KM12, the current at the contacts of the delay element KT11 can be shunted, thereby reducing damage to the delay element KT11 due to excessive current and increasing the service life of the delay element KT11. The model of the magnetic element KM11 and the second switch element KM12 can be determined based on the maximum current in the circuit, and this application does not impose any restrictions.

[0049] 6 , the second switch element KM12 includes at least one of the following: a second switch element KM12 connected between the positive output terminal Out+ of the battery 121 and the positive input terminal IN+ of the power-on self-starting device 123 (as shown by KM12 on the right side of FIG6 ); and a second switch element KM12 connected between the negative output terminal Out- of the battery 121 and the negative input terminal IN- of the power-on self-starting device 123 (as shown by KM12 on the left side of FIG6 ). By providing a second switch element KM12 between the positive output terminal Out+ of the battery 121 and the positive input terminal IN+ of the power-on self-starting device 123, as well as between the negative output terminal Out- of the battery 121 and the negative input terminal IN- of the power-on self-starting device 123, complete isolation of the power supply circuit between the battery 121 and the power-on self-starting device 123 is achieved. This prevents the power-on self-starting device 123 from voltage-splitting the pre-charged component 122 before pre-charging is complete, reduces current flow between the battery 121 and the power-on self-starting device 123, and reduces power consumption of the battery 121. It is understood that only one of the two second switch elements KM12 can be retained, thereby reducing hardware costs and simplifying the circuit structure.

[0050] Referring to Figure 7, the pre-charge control device 124 also includes: at least one current limiting element F1 connected between the battery 121 and the power-on self-starting device 123, which is used to limit the current of the power supply circuit when the power supply circuit is turned on. By setting at least one current limiting element F1, the pre-charge control device 124 can be protected to reduce circuit damage caused by overcurrent in the pre-charge control device 124. Among them, the current limiting element may include but is not limited to fuses or air switches. As shown in Figure 7, the current limiting element F1 can be set at the positive output terminal Out+ of the battery 121, the negative output terminal Out- of the battery 121, the positive input terminal IN+ of the power-on self-starting device 123, and the negative input terminal IN- of the power-on self-starting device 123. In addition to this method, the current limiting element F1 can also be set only at some of the above four positions.

[0051] The above embodiment illustrates a case where the trigger unit 1242 implements delayed turn-on of the power-on self-starting device 123 using hardware. Alternatively, the trigger unit 1242 may implement delayed turn-on of the power-on self-starting device 123 using software. The following describes an embodiment in which software is used to implement delayed turn-on of the power-on self-starting device 123.

[0052] In some embodiments, the trigger unit 1242 is used to obtain pre-charge information of the component to be pre-charged 122, and is in a triggered state or a non-triggered state in response to the pre-charge information. The pre-charge information is used to indicate whether the component to be pre-charged 122 has completed pre-charging. When the trigger unit 1242 is in a non-triggered state, the trigger unit 1242 can send a disconnect instruction to the switch unit 1241 to control the switch unit 1241 to disconnect. When the trigger unit 1242 is in a triggered state, the trigger unit 1242 can send a close instruction to the switch unit 1241 to control the switch unit 1241 to close. In this embodiment, after obtaining the pre-charge information, the trigger unit 1242 can send a disconnect instruction or a close instruction to the switch unit 1241, thereby controlling the state of the switch unit 1241. The above method is implemented by software, without the need for complex wiring, with a simple structure and low implementation cost.

[0053] Among them, the trigger unit 1242 can obtain pre-charging information from the battery 121. The battery 121 may include a battery management system (BMS). The battery management system can detect various charging and discharging states of the battery 121, including whether the battery 121 has completed pre-charging the component to be pre-charged 122. If the battery management system detects that the process of pre-charging the battery 121 to the component to be pre-charged 122 is not completed, it can send pre-charging information indicating that the pre-charging is not completed to the trigger unit 1242; otherwise, it can send pre-charging information indicating that the pre-charging is completed to the trigger unit 1242.

[0054] Alternatively, the triggering unit 1242 may obtain pre-charging information from the component to be pre-charged 122. For example, the component to be pre-charged 122 may obtain its own voltage. If the voltage reaches a preset voltage threshold, it indicates that pre-charging is complete, and the component to be pre-charged 122 may send pre-charging information indicating that pre-charging is complete to the triggering unit 1242. If the voltage does not reach the preset voltage threshold, it indicates that pre-charging is incomplete, and the component to be pre-charged 122 may send pre-charging information indicating that pre-charging is incomplete to the triggering unit 1242.

[0055] The above method provides two optional solutions for the trigger unit 1242 to obtain pre-charge information. When the pre-charge information cannot be obtained through one of the methods, the pre-charge information can be obtained based on the other method, thereby reducing the problem of the trigger unit 1242 failing to successfully obtain the pre-charge information due to communication failures and other problems, thereby improving the stability of the system.

[0056] Referring to Figure 8, the trigger unit 1242 may include a first control unit 1242a and a second control unit 1242b, the first control unit 1242a is connected to the battery 121 and the component to be pre-charged 122, and the second control unit 1242b is connected to the battery 121. Among them, the first control unit 1242a is used to obtain pre-charge information from the battery 121 or the component to be pre-charged 122, and the second control unit 1242b is used to obtain pre-charge information from the battery 121. This embodiment adopts two control units, and the two control units can serve as redundant backups for each other, thereby improving the robustness of the system. In addition, the two control units obtain pre-charge information from different information acquisition paths, respectively, reducing the situation where the pre-charge information cannot be obtained due to the failure of one information acquisition path, thereby improving the stability of the system.

[0057] In some embodiments, different control priorities can be set for the first control unit 1242a and the second control unit 1242b. For example, a higher control priority can be set for the first control unit 1242a, and a lower control priority can be set for the second control unit 1242b, so that the first control unit 1242a can be used to control the on / off of the switch unit 1241 first, thereby avoiding repeated transmission of instructions.

[0058] Specifically, when the first control unit 1242a is in a normal operating state, an opening instruction or a closing instruction can be sent to the switch unit 1241 via the first control unit 1242a. When the first control unit 1242a is in an abnormal operating state, an opening instruction or a closing instruction can be sent to the switch unit 1241 via the second control unit 1242b. Because the first control unit 1242a can obtain pre-charge information from both the battery 121 and the component to be pre-charged 122, the pre-charge information obtained by the first control unit 1242a is more comprehensive and reliable. Prioritizing the sending of an opening instruction or a closing instruction to the switch unit 1241 via the first control unit 1242a can effectively improve the reliability of the obtained pre-charge information. When the first control unit 1242a is in an abnormal operating state, sending an opening instruction or a closing instruction to the switch unit 1241 via the second control unit 1242b enables the second control unit 1242b to provide a redundant backup for the first control unit 1242a, reducing the possibility of failure to properly control the switch unit 1241 due to a failure of the first control unit 1242a.

[0059] The second control unit 1242b can communicate with the first control unit 1242a and, based on the communication status between the second control unit 1242b and the first control unit 1242a, determine whether the first control unit 1242a is in a normal operating state. The second control unit 1242b and the first control unit 1242a can communicate using CAN communication, Profinet communication, or 485 communication. When communication between the second control unit 1242b and the first control unit 1242a is disconnected, the second control unit 1242b can determine that the first control unit 1242a is in an abnormal operating state. For example, the first control unit 1242a can send a heartbeat signal to the second control unit 1242b at a preset frequency. If the second control unit 1242b does not receive the heartbeat signal sent by the first control unit 1242a at the preset frequency, the second control unit 1242b confirms that communication between the second control unit 1242b and the first control unit 1242a is disconnected, thereby confirming that the first control unit 1242a is in an abnormal operating state. Otherwise, the second control unit 1242b confirms that the communication between the second control unit 1242b and the first control unit 1242a is not disconnected, thereby confirming that the first control unit 1242a is in a normal working state. In this way, the second control unit 1242b can effectively determine whether the first control unit 1242a is in a normal working state, and thus determine whether it is necessary to replace the first control unit 1242a to send an opening instruction or a closing instruction to the switch unit 1241, thereby improving the robustness of the system.

[0060] Alternatively, the first control unit 1242a can communicate with the switch unit 1241. Based on the communication status between the switch unit 1241 and the first control unit 1242a, the switch unit 1241 can determine whether the first control unit 1242a is in a normal operating state and report the status of the first control unit 1242a to the second control unit 1242b. When communication with the first control unit 1242a is lost, the switch unit 1241 determines that the first control unit 1242a is in an abnormal operating state and sends a signal to the second control unit 1242b indicating that the first control unit 1242a is in an abnormal operating state. In this embodiment, the function of determining whether the first control unit 1242a is in a normal operating state is decentralized to the switch unit 1241. The second control unit 1242b only needs to obtain the result of whether the first control unit 1242a is in a normal operating state from the switch unit 1241, without having to implement specific judgment logic. This effectively reduces the control pressure on the second control unit 1242b, allowing the second control unit 1242b to focus on implementing the original control logic, without having to modify the original control logic of the second control unit 1242b.

[0061] In some embodiments, the first control unit 1242a is a power and energy management system (PEMS), and the second control unit 1242b is a battery management system for the battery 121. As the control center of the battery system 12, the power and energy management system has more powerful communication and signal processing capabilities than the battery management system. Therefore, the power and energy management system can be used to control the on and off of the switch unit 1241. When the power and energy management system is in an abnormal working state, the battery management system controls the on and off of the switch unit 1241, thereby achieving redundant backup. Moreover, in this embodiment, the original equipment in the battery system 12 is directly used to control the on and off of the switch unit 1241, without adding an additional controller to control the on and off of the switch unit 1241, thereby maximizing the use of the existing equipment in the battery system 12 and simplifying the circuit structure of the battery system 12.

[0062] In some embodiments, the trigger unit 1242 is further configured to receive a status signal sent by the switch unit 1241, the status signal being used to indicate whether the switch unit 1241 is in an open state or a closed state, and to send the status signal to the display unit so that the display unit 1241 displays the status of the switch unit 1241 based on the status signal. The display unit may be provided in a control room or other location convenient for the user to view. By sending the status signal to the display unit for display, the user can intuitively observe the status of the switch unit 1241, thereby determining whether the status of the switch unit 1241 is consistent with the expected status. In the event that it is determined that the status of the switch unit 1241 is inconsistent with the expected status, the user may also manually control the status of the switch unit 1241.

[0063] In some embodiments, after the battery 121 is powered off, the trigger unit 1242 is in a non-triggered state, causing the switch unit 1241 to be in an off state, thereby disconnecting the power supply circuit. For example, in the embodiment shown in FIG5 , the trigger unit 1242 includes a delay element KT11. After the battery 121 is powered off, the delay element KT11 is in a non-triggered state due to power loss, thereby disconnecting the first switch element KT12 and disconnecting the power supply circuit between the battery 121 and the power-on self-starting device 123. In the embodiment shown in FIG6 , the trigger unit 1242 includes a delay element KT11 and a magnetic element KM11, and the switch unit 1241 includes a first switch element KT12 and a second switch element KM12. After the battery 121 is powered off, the delay element KT11 is in a non-triggered state due to power loss, thereby disconnecting the first switch element KT12. When the first switch element KT12 is in the off state, the magnetic element KM11 loses power, thereby disconnecting the second switch element KM12, disconnecting the power supply circuit between the battery 121 and the power-on self-starting device 123. In the embodiment shown in Figure 8, after the battery 121 is powered off, the first control unit 1242a or the second control unit 1242b can send a disconnect command to the switch unit 1241 to disconnect the switch unit 1241. In this way, after the battery 121 is powered off, the power supply circuit between the battery 121 and the power-on self-starting device 123 can be disconnected. This ensures that the power supply circuit between the battery 121 and the power-on self-starting device 123 is disconnected when the next pre-charging cycle begins. This avoids the problem of the power supply circuit being connected during the next pre-charging cycle, which could cause the power-on self-starting device 123 to divide the voltage of the pre-charged component 122 and lead to pre-charging failure. Furthermore, the above process can be automatically implemented, eliminating the need for the user to manually operate the switch unit 1241, reducing user operation complexity and reducing control errors caused by user error.

[0064] Referring to Figure 9 , the battery system 12 may include a DC busbar 125 and a rectifier assembly 126. One end of the rectifier assembly 126 is connected to the DC busbar 125, and the other end is connected to the AC power source 13. The AC power source 13 may include an AC shore power source 131 and / or an AC generator 132, and may also include at least one other AC power source. The AC shore power source 131 may be AC ​​power output from an AC power output port on shore; the AC generator 132 may be any generator capable of generating AC power, such as an AC diesel generator. The rectifier assembly 126 converts the AC power output from the AC power source 13 into DC power, which is then output to the DC busbar 125 to power the loads on the mobile device 10. The rectifier assembly 126 may be a rectifier, charger, or other device capable of converting AC power into DC power. In addition to the battery system 12, the mobile device 10 may also include other DC power sources for outputting DC power. These other DC power sources may include, but are not limited to, at least one of a lithium battery, a supercapacitor, a hydrogen fuel cell, a photovoltaic cell, and a DC shore power source.

[0065] When supplying power, the DC power source (including the battery system 12 and / or other DC power sources) and the AC power source 13 can form a hybrid power source. For example, the battery system 12 can be used to power the load on the mobile device 10. When the battery system 12 is low on power, the AC power source 13 can be used to power the load on the mobile device 10 and charge the battery system 12, thereby extending the range of the mobile device 10 and improving the endurance of the mobile device 10.

[0066] In some cases, the number of AC power sources 13 is greater than one. For example, AC power source 13 includes both AC shore power 131 and AC generator 132. If multiple AC power sources 13 are connected to the same rectifier assembly 126, the AC power output by these multiple AC power sources 13 may have phase angle differences, resulting in circulating current and damaging circuit components. Therefore, in related art, each AC power source 13 requires a separate rectifier assembly 126 to convert the AC power output from the AC power source 13 into DC power for connection to the DC network, increasing the hardware cost and equipment installation space of the battery system 12.

[0067] Based on this, referring to FIG10 , the battery system 12 of the present application includes a DC busbar 125, a rectifier assembly 126, and a power switching device 127. The battery 121 supplies power to the pre-charged component 122 via the DC busbar 125. The input of the rectifier assembly 126 is connected to the output of the power switching device 127, and the output of the rectifier assembly 126 is connected to the DC busbar 125. The input of the power switching device 127 is connected to at least two AC power sources 13. The power switching device 127 can selectively connect multiple AC power sources 13 to the DC busbar 125. This allows multiple AC power sources 13 to share the rectifier assembly 126, reducing hardware costs and equipment installation space. Furthermore, it avoids circulating current problems caused by the different phase angles of the AC power output by multiple AC power sources 13, improving the safety of the battery system 12 and thus the operational safety of the mobile device 10. The following describes an embodiment of the battery system 12 with the power switching device 127 added.

[0068] Referring to Figure 11, the power switching device 127 includes a multi-way switch circuit, each switch circuit is connected between the rectifier component 126 and an AC power source 13, and any two switch circuits in the multi-way switch circuit are mutually exclusive. Any two switch circuits in the multi-way switch circuit are mutually exclusive, which means that any two switch circuits mentioned above are not turned on at the same time. For example, when one switch circuit is turned on, the other switch circuit is disconnected. Or, both switch circuits are disconnected. By adopting a power switching device 127 including a multi-way switch circuit, when multiple AC power sources 13 are included, only a multi-way switch circuit needs to be set up, and there is no need to set up multiple rectifier components 126. Since the hardware cost and volume of the switch circuit are much lower than those of the rectifier component 126, it can effectively reduce the hardware cost and the space for equipment installation.

[0069] Taking the example of at least two AC power sources 13, including an AC shore power source 131 and an AC generator 132, the power switching device 127 includes two switching circuits, designated as switching circuit A and switching circuit B. Switching circuit A is connected to the rectifier assembly 126 and the AC shore power source 131. When switching circuit A is on, the AC shore power source 131 outputs AC power to the rectifier assembly 126, which rectifies the AC power output from the AC shore power source 131 and then inputs it to the DC busbar 125. Switching circuit B is connected to the rectifier assembly 126 and the AC generator 132. When switching circuit B is on, the AC generator 132 outputs AC power to the rectifier assembly 126, which rectifies the AC power output from the AC generator 132 and then inputs it to the DC busbar 125. Switching circuit A and switching circuit B are mutually exclusive. That is, when switching circuit A is on, switching circuit B is off; when switching circuit B is on, switching circuit A is off. Of course, switching circuits A and B can also be off simultaneously. In this way, the AC shore power 131 and the AC generator 132 will not be connected to the rectifier assembly 126 at the same time, thereby avoiding the circulation problem.

[0070] In some embodiments, each switch circuit includes a relay, and the relay includes a main contactor, a normally open contact, and a normally closed contact. The main contactor of the relay of each switch circuit is connected to the normally open contact of the relay of the switch circuit and the normally closed contacts of the relays of the remaining switch circuits. This embodiment uses relays to form the switch circuit, which has a simple circuit structure and low hardware cost. In addition, it is only necessary to control the power supply or power loss of the relay to control the corresponding switch circuit to be turned on or off, and the control logic is simple. The structure of the power switching device 127 is illustrated below by taking the cases where the power switching device 127 includes two switch circuits and three switch circuits as examples.

[0071] Figure 12 illustrates a case where the power switching device 127 includes two switching circuits. As shown in Figure 12 , K11 and K22 represent relays, K1 represents the main contactor of relay K11, K2 represents the main contactor of relay K22, K1-1 and K1-2 represent the normally open and normally closed contacts of relay K11, respectively, and K2-1 and K2-2 represent the normally open and normally closed contacts of relay K22, respectively. The switching circuit in which relay K11 resides (hereinafter referred to as Circuit 1) includes the main contactor K1, the normally open contact K1-1, and the normally closed contact K2-2; the switching circuit in which relay K22 resides (hereinafter referred to as Circuit 2) includes the main contactor K2, the normally open contact K2-1, and the normally closed contact K1-2. The main contactor K1 of circuit 1 is connected to the normally open contact K1-1 of circuit 1, the normally open contact K1-1 of circuit 1 is connected to the normally closed contact K2-2 of circuit 2, the main contactor K2 of circuit 2 is connected to the normally open contact K2-1 of circuit 2, and the normally open contact K2-1 of circuit 2 is connected to the normally closed contact K1-2 of circuit 1.

[0072] For the normally open contact K1-1, when the main contactor K1 is de-energized, it remains open. When the main contactor K1 is energized, it remains closed. For the normally closed contact K1-2, when the main contactor K1 is de-energized, it remains closed. When the main contactor K1 is energized, it remains open. The same applies to the normally open contacts K2-1 and K2-2.

[0073] When both main contactors K1 and K2 are de-energized, normally open contacts K1-1 and K2-1 are open, normally closed contacts K1-2 and K2-2 are closed, and circuits 1 and 2 are both disconnected. When main contactor K1 is energized, normally open contact K1-1 closes. Since main contactor K2 is de-energized, normally closed contact K2-2 is closed. Therefore, circuit 1, consisting of normally closed contact K2-2, normally open contact K1-1, and main contactor K1, is connected. Since normally closed contact K1-2 remains open when main contactor K1 is energized, circuit 2 remains disconnected. At this point, if main contactor K2 is energized, normally open contact K2-1 becomes closed, normally closed contact K2-2 becomes open, and main contactor K1 loses power. Circuit 1, formed by normally closed contact K2-2, normally open contact K1-1, and main contactor K1, becomes disconnected, while normally closed contact K1-2 remains closed. Circuit 2, formed by normally closed contact K1-2, normally open contact K2-1, and main contactor K2, becomes conductive. Therefore, circuits 1 and 2 are never conductive at the same time, achieving mutual exclusion between circuits 1 and 2, thereby achieving electrical isolation between the two AC power sources 13.

[0074] Figure 13 illustrates a case where the power switching device 127 includes three switching circuits. As shown in Figure 13 , K33 represents a relay, K3 represents the main contactor of relay K33, K3-1 represents the normally open contact of relay K33, and K3-2 represents the normally closed contact of relay K33. The meanings of the remaining symbols and the operating principle of relay K33 can be found in the corresponding embodiment of Figure 12 and will not be repeated here. It should be noted that in Figure 13 , K2-2 on circuit 1 and K2-2 on circuit 3 represent the same type of component, both of which are normally closed contacts of relay K22; K3-2 on circuit 1 and K3-2 on circuit 2 represent the same type of component, both of which are normally closed contacts of relay K33; and K1-2 on circuit 2 and K1-2 on circuit 3 represent the same type of component, both of which are normally closed contacts of relay K11.

[0075] When the main contactors K1, K2 and K3 are not energized, the normally open contacts K1-1, K2-1 and K3-1 are all in the open state, the normally closed contacts K1-2, K2-2 and K3-2 are all in the closed state, and loops 1, 2 and 3 (the switching circuit where relay K33 is located, including the main contactor K3, the normally open contact K3-1 and the normally closed contact K1-2) are all disconnected.

[0076] When main contactor K1 is energized, normally open contact K1-1 closes and normally closed contact K1-2 opens. Since normally closed contacts K2-2 and K3-2 are closed, circuit 1, consisting of normally closed contact K3-2, normally closed contact K2-2, normally open contact K1-1, and main contactor K1, is connected. Since normally open contacts K2-1 and K3-1 are both open, circuits 2 and 3 are disconnected.

[0077] When main contactor K2 is energized, normally open contact K2-1 closes and normally closed contact K2-2 opens. Since normally closed contact K2-2 opens, both circuits 1 and 3 are disconnected. When main contactors K1 and K3 lose power, normally open contacts K1-1 and K3-1 open, while normally closed contacts K1-2 and K3-2 close. Therefore, circuit 2, consisting of normally closed contact K1-2, normally closed contact K3-2, normally open contact K2-1, and main contactor K2, becomes conductive.

[0078] When main contactor K3 is energized, normally open contact K3-1 closes and normally closed contact K3-2 opens. Since normally closed contact K3-2 opens, circuits 1 and 2 are disconnected. When main contactors K1 and K2 lose power, normally open contacts K1-1 and K2-1 open, while normally closed contacts K1-2 and K2-2 close. Therefore, circuit 3, consisting of normally closed contact K2-2, normally closed contact K1-2, normally open contact K3-1, and main contactor K3, becomes conductive.

[0079] In summary, at any time, only one of loop 1, loop 2 and loop 3 will be conductive, achieving mutual exclusion of loop 1, loop 2 and loop 3, thereby achieving electrical isolation between the three AC power sources 13.

[0080] Any one of the above-mentioned loops 1, 2 and 3 can be loop A connected to the rectifier component 126 and the AC shore power 131 in the aforementioned embodiment, or loop B connected to the rectifier component 126 and the AC generator 132, or loop C connected to the rectifier component 126 and other AC power sources.

[0081] It is understood that when the number of AC power sources 13 is greater than 3, the working principle of the power switching device 127 is similar to the above embodiment. With the above solution, only one power switching device 127 is required to achieve electrical isolation between two or more AC power sources 13.

[0082] In some embodiments, the battery system 12 may further include multiple switch assemblies, each corresponding to a switch circuit. Each switch assembly may have an open state and a closed state. When the switch assembly is in the closed state, the corresponding switch circuit is conductive, thereby connecting the AC power source 13 connected to the switch circuit to the rectifier assembly 126; when the switch assembly is in the open state, the corresponding switch circuit is disconnected, thereby disconnecting the AC power source 13 connected to the switch circuit and the rectifier assembly 126. By providing multiple switch assemblies, the user only needs to operate the corresponding switch assembly to control the state of each switch circuit, thereby improving the convenience of controlling the switch circuit.

[0083] As shown in Figure 12, the multiple switch assemblies include a switch assembly S1 corresponding to loop 1 and a switch assembly S2 corresponding to loop 2. As shown in Figure 13, the multiple switch assemblies include a switch assembly S1 corresponding to loop 1, a switch assembly S2 corresponding to loop 2, and a switch assembly S3 corresponding to loop 3. It is understood that when the number of switch loops is greater than three, the number of switch assemblies can be increased accordingly, and this application will not elaborate on this.

[0084] In some embodiments, the switch assembly includes a local switch unit, one end of which is connected to the corresponding switch circuit, and the other end is connected to a local DC power supply. In other embodiments, the switch assembly includes a remote switch unit, one end of which is connected to the corresponding switch circuit, and the other end is connected to a remote DC power supply. Wherein, the DC power supply (including the local DC power supply and the remote DC power supply) is used to provide electrical energy to the relay on the switch circuit when the local switch unit or the remote switch unit corresponding to the switch circuit is closed, so that the main contactor of the relay on the switch circuit is energized, thereby closing the normally open contact of the relay and disconnecting the normally closed contact of the relay, thereby turning on the switch circuit. When the local switch unit and the remote switch unit corresponding to the switch circuit are both disconnected, the main contactor of the relay on the switch circuit loses power, and the switch circuit is disconnected.

[0085] Taking the example of the number of switch loops being 2, and referring to FIG15 , S1 and S2 represent local switch units, and S1′ and S2′ represent remote switch units. The user can control the local switch unit S1 to close at the location where the battery system 12 is deployed, or remotely control the remote switch unit S1′ to close, to make loop 1 conductive. It is also possible to control the switch unit S1 to open locally, or remotely control the remote switch unit S1′ to open. When both S1 and S1′ are disconnected, loop 1 is disconnected. The control method of loop 2 is similar to that of loop 1 and will not be repeated here.

[0086] Among them, the rectifier component 126 and the power switching device 127 can be deployed in a control cabinet, and the local switch unit can also be set in the control cabinet. By setting the local switch unit in the control cabinet where the rectifier component 126 and the power switching device 127 are located, the user can conveniently control the corresponding switch circuit to be turned on or off by operating the local switch unit when performing fault diagnosis and processing, thereby facilitating fault diagnosis and processing. The remote switch unit can be set in the cockpit of the movable device 10, so that the user can control the corresponding switch circuit to be turned on or off while driving the movable device 10. Therefore, by setting the local switch unit and the remote switch unit, the user's control needs in various application scenarios can be met.

[0087] Continuing with Figure 15 , when the switch assembly includes both local switch units and remote switch units, the battery system 12 further includes a switching element Sx. The switching element Sx is connected to multiple switch assemblies and is used to select whether the corresponding switch circuit is controlled by the local switch unit or the remote switch unit. When the switching element Sx is activated, the corresponding switch circuit is controlled by the local switch unit. When the switching element Sx is inactivated, the corresponding switch circuit is controlled by the remote switch unit. As shown in Figure 15 , the switching element Sx can be connected to multiple local switch units. The switching unit Sx can be a toggle switch. The toggle switch is activated when closed and inactivated when open. By closing the toggle switch, the user can control the corresponding switch circuit to be turned on or off by the local switch unit, or by opening the toggle switch, the user can control the corresponding switch circuit to be turned on or off by the remote switch unit. By configuring the switching element Sx, the user can quickly switch the switch unit controlling the switch circuit to the local switch unit or the remote switch unit by controlling the switching element Sx to be activated or inactivated, thereby improving the convenience and efficiency of switching the switch units.

[0088] In the case where the switch assembly includes a local switch unit, the battery system 12 may further include a DC conversion assembly, the input end of which is connected to the DC busbar 125, and the output end of which is connected to the local switch unit. In some embodiments, the DC conversion assembly may include a DC converter (Direct Current to Direct Current Converter, DC-DC). The DC converter may convert the voltage output by the DC busbar 125 into a voltage compatible with the local switch unit, and the converted voltage may be used as a local DC power supply and output to the local switch unit. In this way, power can be directly taken from the DC busbar 125 without setting up an additional local DC power supply. Since the output voltage of the DC busbar 125 may not match the operating voltage of the local switch unit, the output voltage of the DC busbar 125 is converted by the DC converter and output to the local switch unit to ensure that the local switch unit can operate normally.

[0089] In some embodiments, each relay includes at least two normally open contacts. One normally open contact of each switching circuit is used to connect to the normally closed contacts of the relays of the remaining switching circuits, and the remaining normally open contacts are used to connect the rectifier component 126 and the AC power supply 13. Specifically, the two ends of each of the remaining normally open contacts of the relay are used to connect the AC power supply 13 and the rectifier component 126 respectively. Taking the number of switching circuits as 2 as an example, and referring to Figures 12, 14a and 14b, the normally open contacts of relay K11 include K1-1 and K x 1-1, the normally open contacts of relay K22 include K1-2 and K x 1-2. The normally open contact K1-1 of the relay K11 is used to connect the normally closed contacts of the relays of the remaining switch circuits (i.e., the relay K22), which is the normally closed contact K2-2 in this embodiment. The remaining normally open contacts K x 1-1 (can be one or more) is used to connect the rectifier assembly 126 and the AC power supply 13. The normally open contact K2-1 of the relay K22 is used to connect the normally closed contacts of the relays of the remaining switch circuits (i.e., the relay K11), in this embodiment, the normally closed contacts K1-2, and the remaining normally open contacts K1-1 of the relay K22 are used to connect the normally closed contacts of the relays (i.e., the relay K11). x 2-1 (can be one or more) is used to connect the rectifier component 126 and the AC power supply 13.

[0090] As shown in Figure 14b, when the main contactor K1 of relay K11 is energized, the normally open contact K x 1-1 is closed, thus the normally open contact K x The AC power supply 13 connected to 1-1 is connected to the rectifier component 126; when the main contactor K1 of the relay K11 loses power, the normally open contact K x1-1 is disconnected, thus the normally open contact K x The connection between the AC power supply 13 connected to 1-1 and the rectifier assembly 126 is disconnected. Normally open contact K x The working principle of 2-1 is similar and will not be repeated here.

[0091] The two ends of the normally open contact of the relay are used to connect the AC power supply 13 and the rectifier assembly 126. When the AC power supply 13 is a single-phase AC power supply, the relay includes two normally closed contacts, and the two ends of one of the normally closed contacts are used to connect the AC power supply 13 and the rectifier assembly 126. When the AC power supply 13 is a three-phase AC power supply, as shown in Figure 14b, the relay includes four normally closed contacts, three of which are normally closed contacts K x Both ends of 1 - 1 are used to connect to the AC power source 13 and the rectifier component 126 respectively.

[0092] Continuing with Figure 14a, the battery system 12 also includes a circuit breaker, which is used to connect the rectifier assembly 126 and the AC power source 13. The remaining normally open contacts of the relay are used to connect the circuit breaker. The number of circuit breakers can match the number of switch circuits, with each circuit breaker corresponding to one switch circuit. As shown in Figure 14a, when the number of switch circuits is two, the number of circuit breakers is also two, and the two circuit breakers are respectively designated as circuit breaker Q1 and circuit breaker Q2. When the circuit breaker is closed, the AC power source 13 connected to the corresponding switch circuit is connected to the rectifier assembly 126, so that the rectifier assembly 126 rectifies the AC power output by the AC power source 13 connected to the corresponding switch circuit and inputs it to the DC busbar 125. When the circuit breaker is open, the connection between the AC power source 13 connected to the corresponding switch circuit and the rectifier assembly 126 is disconnected, causing the AC power source 13 connected to the corresponding switch circuit to stop outputting AC power to the rectifier assembly 126.

[0093] In some embodiments, the state of the circuit breaker can be controlled by the switch circuit corresponding to the circuit breaker. When the switch circuit is on, the circuit breaker corresponding to the switch circuit is closed; when the switch circuit is off, the circuit breaker corresponding to the switch circuit is open. Referring to Figures 12 and 14a, when the main contactor K1 of the relay K11 is energized, the normally open contact K x 1-1 is closed, so the circuit breaker Q1 corresponding to circuit 1 is closed. When the main contactor K1 of relay K11 loses power, the normally open contact K x 1-1 is disconnected, thereby disconnecting circuit breaker Q1 corresponding to circuit 1. The operating principle of circuit breaker Q2 is similar to that of circuit breaker Q1 and will not be further described here. By providing a circuit breaker, it can protect the relays in the corresponding switching circuit and reduce damage to the relays in the corresponding switching circuit due to excessive current flowing through the switching circuit.

[0094] It should be noted that in the above embodiment, multiple AC power sources 13 can share a group of rectifier assemblies 126, wherein a group of rectifier assemblies 126 can include one or more rectifier assemblies 126. For example, in the embodiment shown in Figures 14a and 14b, the number of rectifier assemblies 126 is two, and these two rectifier assemblies 126 are connected in parallel. In actual applications, the power of a single rectifier assembly 126 may not meet the power requirements required for circuit operation. Therefore, multiple parallel rectifier assemblies 126 can be provided. By making multiple rectifier assemblies 126 work simultaneously, the power requirements required for circuit operation can be met. It will be understood that the figures are only exemplary. In other examples, other numbers of rectifier assemblies 126 can also be provided according to actual power requirements.

[0095] In some embodiments, the AC power source 13 includes a single-phase AC power source or a three-phase AC power source. When the at least two AC power sources 13 include an AC generator 132 and an AC shore power source 131, the AC generator 132 can be a single-phase AC generator or a three-phase AC generator. A single-phase AC generator is used to output single-phase AC power, while a three-phase AC generator is used to output three-phase AC power. The AC shore power source 131 can be a single-phase AC shore power source or a three-phase AC shore power source. A single-phase AC shore power source is used to output single-phase AC power, while a three-phase AC shore power source is used to output three-phase AC power.

[0096] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0097] The above is a detailed introduction to the methods and devices provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the methods and core ideas of the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A pre-filling control device, It is characterized in that A battery system for a mobile device, the battery system comprising a battery, a component to be pre-charged, and a power-on self-starting device, the battery being capable of supplying power to the component to be pre-charged; The pre-filling control device comprises: A switch unit, the switch unit being connected between the battery and the power-on self-starting device; a trigger unit, the trigger unit being connected to the switch unit; Before the pre-charging of the pre-charged component is completed, the trigger unit is in a non-triggering state, so that the switch unit is in an off state to disconnect the power supply circuit between the battery and the power-on self-starting device; When the pre-charging of the pre-charged component is completed, the trigger unit is in a triggering state, so that the switch unit is in a closed state to conduct the power supply circuit between the battery and the power-on self-starting device.

2. The pre-filling control device according to claim 1, It is characterized in that If the battery power-on time does not reach the preset time, the trigger unit is in the non-trigger state; If the battery power-on time reaches the preset time, the trigger unit is in the trigger state.

3. The pre-filling control device according to claim 2, It is characterized in that The trigger unit includes a delay element, and the switch unit includes a first switch element; The two ends of the delay element are respectively connected to the positive output end and the negative output end of the battery, one end of the first switch element is connected to one end of the delay element connected to the positive output end of the battery, and the other end of the first switch element is connected to the positive input end of the power-on self-starting device.

4. The pre-filling control device according to claim 2, It is characterized in that The trigger unit includes a delay element and a magnetic element, and the switch unit includes a first switch element and a second switch element; The two ends of the delay element are respectively connected to the positive output end and the negative output end of the battery, one end of the first switch element is connected to one end of the delay element connected to the positive output end of the battery, the other end of the first switch element is connected to one end of the magnetic element, the other end of the magnetic element is connected to the negative output end of the battery, and the second switch element is connected between the battery and the power-on self-starting device.

5. The pre-filling control device according to claim 4, It is characterized in that The second switch element includes at least one of the following: A second switch element connected between the positive output terminal of the battery and the positive input terminal of the power-on self-starting device; A second switch element is connected between the negative output terminal of the battery and the negative input terminal of the power-on self-starting device.

6. The pre-filling control device according to any one of claims 1 to 5, It is characterized in that The pre-filling control device also includes: At least one current limiting element connected between the battery and the power-on self-starting device is used to limit the current of the power supply circuit when the power supply circuit is turned on.

7. The pre-filling control device according to claim 6, It is characterized in that The at least one current limiting element includes a fuse or an air switch.

8. The pre-filling control device according to claim 1, It is characterized in that The trigger unit is used for: Obtaining pre-charging information of the component to be pre-charged; In response to the pre-charging information, the trigger state or the non-trigger state is in the trigger state, and the pre-charging information is used to indicate whether the component to be pre-charged has completed pre-charging; When in the non-trigger state, sending a disconnection instruction to the switch unit to control the switch unit to disconnect; When in the trigger state, a closing instruction is sent to the switch unit to control the switch unit to close.

9. The pre-filling control device according to claim 8, It is characterized in that The trigger unit is used to obtain the pre-charging information from the battery or the component to be pre-charged.

10. The pre-filling control device according to claim 9, It is characterized in that The trigger unit includes a first control unit and a second control unit, the first control unit is connected to the battery and the component to be pre-charged, and the second control unit is connected to the battery; The first control unit is used to obtain the pre-charging information from the battery or the component to be pre-charged; The second control unit is used to obtain the pre-charge information from the battery.

11. The pre-filling control device according to claim 8, It is characterized in that The trigger unit includes a first control unit and a second control unit, the first control unit is connected to the battery and the component to be pre-charged, and the second control unit is connected to the battery; When the first control unit is in a normal working state, the first control unit is used to send the opening instruction or the closing instruction to the switch unit; When the first control unit is in an abnormal working state, the second control unit is used to send the opening instruction or the closing instruction to the switch unit.

12. The pre-filling control device according to claim 11, It is characterized in that The second control unit confirms that the first control unit is in the abnormal working state when the communication between the second control unit and the first control unit is disconnected; and / or When the switch unit disconnects its communication with the first control unit, it confirms that the first control unit is in the abnormal working state, and the second control unit receives the signal sent by the switch unit indicating that the first control unit is in the abnormal working state.

13. The pre-filling control device according to any one of claims 10 to 12, It is characterized in that The first control unit is a power and energy management system, and the second control unit is a battery management system of the battery.

14. The pre-filling control device according to claim 8, It is characterized in that The trigger unit is also used for: receiving a state signal sent by the switch unit, wherein the state signal is used to indicate that the switch unit is in the open state or the closed state; The state signal is sent to a display unit, so that the display unit displays the state of the switch unit based on the state signal.

15. The pre-filling control device according to claim 1, It is characterized in that After the battery is powered off, the trigger unit is in the non-trigger state, so that the switch unit is in the disconnected state to disconnect the power supply circuit.

16. A battery system, It is characterized in that The battery system comprises: Battery; A component to be pre-charged is connected to the battery; Power-on self-starting devices; and The pre-charging control device according to any one of claims 1 to 15, wherein the pre-charging control device is connected between the battery and the power-on self-starting device.

17. The battery system according to claim 16, It is characterized in that The power-on self-starting device includes at least one of the following: a DC converter and an inverter.

18. The battery system according to claim 16, It is characterized in that The battery system includes a DC bus, a rectifier component and a power switching device. The battery supplies power to the pre-charged component via the DC bus. The input end of the rectifier component is connected to the output end of the power switching device. The output end of the rectifier component is connected to the DC bus. The input end of the power switching device is connected to at least two AC power sources.

19. The battery system according to claim 18, It is characterized in that The power switching device includes a multi-way switch circuit, each of which is connected between the rectifier component and one of the AC power sources, and any two of the multi-way switch circuits are mutually exclusive.

20. The battery system according to claim 19, It is characterized in that Each of the switch circuits includes a relay, and the relay includes a main contactor, a normally open contact, and a normally closed contact; The main contactor of the relay of each switch circuit is connected to the normally open contact of the relay of the switch circuit and the normally closed contacts of the relays of the remaining switch circuits.

21. The battery system according to claim 20, It is characterized in that Each of the relays includes at least two normally open contacts, one of the normally open contacts of the relay of each switch circuit is used to connect to the normally closed contacts of the relays of the remaining switch circuits, and the remaining normally open contacts are used to connect the rectifier assembly and the AC power supply.

22. The battery system according to claim 21, It is characterized in that Two ends of each of the remaining normally open contacts are used to connect the rectifier component and the AC power supply respectively.

23. The battery system according to claim 21, It is characterized in that The battery system further comprises a circuit breaker, wherein the circuit breaker is used to connect the rectifier assembly and the AC power source, and the remaining normally open contacts are used to connect the circuit breaker.

24. The battery system according to claim 19, It is characterized in that The battery system further comprises a plurality of switch components, each of which is connected to a corresponding switch circuit to conduct the switch circuit when closed.

25. The battery system according to claim 24, It is characterized in that The switch assembly comprises a local switch unit, one end of which is connected to a corresponding switch loop, and the other end of which is connected to a local DC power supply.

26. The battery system according to claim 25, It is characterized in that The battery system further comprises a DC conversion component, an input end of the DC conversion component is connected to the DC busbar, and an output end of the DC conversion component is connected to the local switch unit.

27. The battery system according to claim 25, It is characterized in that The switch assembly comprises a remote switch unit, one end of which is connected to a corresponding switch circuit, and the other end of which is connected to a remote DC power supply.

28. The battery system according to claim 27, It is characterized in that The battery system further includes a switching element connected to the plurality of switch components, and the switching element is used for selecting a corresponding switch circuit controlled by the local switch unit or the remote switch unit.

29. The battery system according to claim 28, It is characterized in that The switching element is connected to a plurality of the local switch units; When the switching element is activated, controlling the corresponding switch circuit based on the local switch unit; When the switching element is not activated, the corresponding switch circuit is controlled based on the remote switch unit.

30. The battery system according to any one of claims 18 to 29, It is characterized in that The AC power source includes a single-phase AC power source or a three-phase AC power source.

31. The battery system according to claim 30, It is characterized in that The at least two AC power sources include an AC generator and AC shore power.

32. A movable device, It is characterized in that The movable device comprises: A movable body; and The battery system according to any one of claims 16 to 31, wherein the battery system is mounted on the movable body.

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