Battery control device for a generator set and vehicle

Abstract

The present disclosure provides a battery control device for a generator set and a vehicle, and relates to the technical field of generator sets, wherein the device comprises a first battery pack, a second battery pack, a negative electrode contactor, a positive electrode contactor and a change-over switch. One end of the negative electrode contactor is connected to the negative electrode of a first set starting motor and the negative electrode of a second set starting motor, and the other end is connected to the negative electrode of the first battery pack and the negative electrode of the second battery pack. One end of the positive electrode contactor is connected to the positive electrode of the first set starting motor and the positive electrode of the first battery pack, and the other end is connected to the positive electrode of the second set starting motor and the positive electrode of the second battery pack. The output end of the change-over switch is connected to the control end of the negative electrode contactor and the control end of the positive electrode contactor. When the change-over switch is in the first gear, the negative electrode contactor and the positive electrode contactor are disconnected. The device can effectively prevent the battery from being depleted, without the need for regular starting of the generator set or external charging maintenance of the battery.

Description

Technical Field

[0001] This disclosure belongs to the field of generator set technology, specifically relating to a battery control device for generator sets and a vehicle. Background Technology

[0002] When a generator set is shut down for an extended period, its backup battery may become depleted due to a lack of charging and discharging maintenance. This is because batteries gradually lose charge due to self-discharge during idle periods. If the generator set is not started regularly or the battery is not externally charged for maintenance, the battery capacity may decrease, ultimately leading to failure in emergency power supply. In emergencies, the generator set may not be able to start normally, severely impacting the reliability of power supply.

[0003] Although there are parallel high-capacity battery devices for vehicles in related technologies, they have the following disadvantages: 1) The negative terminal of the battery needs to be connected to the vehicle frame to form a circuit, which cannot be used in situations where there is no grounding point, and the battery is still subject to depletion; 2) It only supports fixed parallel mode and cannot switch to independent power supply, and cannot realize the power supply mode of a single battery pack; 3) It cannot be applied to generator sets with two-wire starter motors. Utility Model Content

[0004] This disclosure provides a battery control device and vehicle for generator sets, aiming to at least partially solve the technical problem that related technologies are not applicable to situations without a grounding point and where battery depletion occurs.

[0005] At least one embodiment of this disclosure provides a battery control device for a generator set, the generator set including a No. 1 generator set, a No. 1 generator set starter motor, a No. 2 generator set, and a No. 2 generator set starter motor, the battery control device including:

[0006] First battery pack and second battery pack;

[0007] First battery pack and second battery pack;

[0008] A negative contactor, one end of which is connected to the negative terminal of the starting motor of Unit 1 and the negative terminal of the starting motor of Unit 2, and the other end of which is connected to the negative terminal of the first battery pack and the negative terminal of the second battery pack.

[0009] A positive contactor, one end of which is connected to the positive terminal of the starter motor of Unit 1 and the positive terminal of the first battery pack, and the other end of which is connected to the positive terminal of the starter motor of Unit 2 and the positive terminal of the second battery pack; and,

[0010] A changeover switch, wherein the changeover switch is provided with a first position, and the output terminal of the changeover switch is connected to the control terminal of the negative contactor and the control terminal of the positive contactor;

[0011] When the selector switch is in the first position, the negative contactor and the positive contactor are in the open state.

[0012] In the battery control device provided in at least one embodiment of this disclosure, the changeover switch is further provided with a second position and a third position;

[0013] Specifically, when the selector switch is in the second position, the negative contactor is in the closed state and the positive contactor is in the open state; and when the selector switch is in the third position, both the negative contactor and the positive contactor are in the closed state.

[0014] The battery control device provided in at least one embodiment of this disclosure further includes:

[0015] Changeover switch control circuit; and,

[0016] The changeover switch control circuit includes a first branch for connecting the control terminal of the negative contactor and a second branch for connecting the control terminal of the positive contactor. When the changeover switch is switched to the first position, both the first branch and the second branch are disconnected. When the changeover switch is switched to the second position, the first branch is turned on and the second branch is disconnected. When the changeover switch is switched to the third position, both the first branch and the second branch are turned on.

[0017] The battery control device provided in at least one embodiment of this disclosure further includes:

[0018] A battery box, wherein the changeover switch is mounted on the outer surface of the battery box, and the changeover switch control circuit is provided on the inner side of the battery box;

[0019] In a battery control device provided in at least one embodiment of this disclosure, the first branch is provided with a first contact, and the second branch is provided with a second contact;

[0020] Specifically, when the selector switch is switched to the second position, the first contact is energized and the first branch is connected, while the second contact is de-energized and the second branch is disconnected. When the selector switch is switched to the third position, both the first and second contacts are energized and both the first and second branches are connected.

[0021] The battery control device provided in at least one embodiment of this disclosure further includes:

[0022] A negative cable, one end of which is connected to the negative contactor, and the other end of which is connected to the negative terminal of the starting motor of Unit 1 and the negative terminal of the starting motor of Unit 2; and,

[0023] A positive cable, one end of which is connected to the positive contactor, and the other end of which is connected to the positive terminal of the first battery pack and the positive terminal of the second battery pack.

[0024] In the battery control device provided in at least one embodiment of this disclosure, the selector switch is a mechanical rotary switch, and the first gear, the second gear, and the third gear are gears corresponding to different preset angles to which the selector switch is rotated.

[0025] In a battery control device provided in at least one embodiment of this disclosure, the first gear position is a 0° gear position arranged in a vertical direction, the second gear position is a gear position arranged on one side of the 0° gear position and forming a first angle with the 0° gear position, and the third gear position is a gear position arranged on the other side of the 0° gear position and forming a second angle with the 0° gear position.

[0026] In at least one embodiment of the battery control device provided in this disclosure, the battery cells of the first battery pack and the second battery pack are all connected in series; and...

[0027] The number of individual battery cells in the first battery pack and the second battery pack is equal.

[0028] In the battery control device provided in at least one embodiment of this disclosure, both the negative contactor and the positive contactor are DC contactors.

[0029] At least one embodiment of this disclosure also provides a vehicle, the vehicle including a generator set and a battery control device as provided in any embodiment of this disclosure.

[0030] This disclosure provides a battery control device for a generator set and a vehicle, which, compared to related technologies, achieves power-off protection in a first-position by incorporating a changeover switch, a negative contactor, and a positive contactor. This effectively prevents the first and second battery banks from becoming depleted without requiring periodic generator start-up or external battery charging, making battery management and maintenance easier. Furthermore, the battery negative terminal in this control device does not need to be connected to the vehicle frame to form a circuit, thus avoiding the risk of battery damage due to abnormal frame potential. The changeover switch design allows operators to flexibly select the battery's operating state and easily achieve power-off protection. The synergistic action of the negative and positive contactors ensures safe isolation of the battery in power-off protection mode, effectively preventing current leakage and battery self-discharge. This device not only improves the stability and safety of the vehicle's power supply but also reduces additional costs caused by improper battery maintenance. Additionally, the device is easy to install and remove, facilitating operation during vehicle maintenance and upgrades.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the composition of a battery control device provided for at least one embodiment of this disclosure;

[0034] Figure 2 A schematic diagram of another battery control device provided for at least one embodiment of the present disclosure;

[0035] Figure 3 A schematic diagram of the composition of a changeover switch control circuit provided for at least one embodiment of this disclosure;

[0036] Figure 4 A schematic diagram illustrating the composition of yet another battery control device provided in at least one embodiment of this disclosure;

[0037] Figure 5 A schematic diagram of component connections for a battery control device provided in at least one embodiment of this disclosure;

[0038] Figure 6This is a structural block diagram of a vehicle provided for at least one embodiment of the present disclosure.

[0039] Figure Labels

[0040] 100-Battery control device; 101-Changeover switch; 102-Battery box; 103-Negative cable; 104-First battery pack; 105-Positive cable; 106-Negative contactor; 107-Second battery pack; 108-Positive contactor;

[0041] 109 - Changeover switch control circuit; 200 - Generator set; 201 - Unit 1 starter motor; 202 - Unit 2 starter motor; 203 - Unit 1; 204 - Unit 2; A - First contact; B - Second contact; B+ - Battery positive terminal; B - Battery negative terminal. Detailed Implementation

[0042] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the disclosure. Similarly, the following embodiments are only some, not all, embodiments of the present disclosure, and all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0043] The terms "first," "second," and "third" used in the embodiments of this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," and "third" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0044] In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and perform secondary processing on the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0045] The terms “comprising” and “having”, and any variations thereof, used in this disclosure are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to such processes, methods, products, or devices.

[0046] In this disclosure, the term "battery pack" refers to a battery pack consisting of multiple individual battery cells connected in series, used to store electrical energy and provide power to a generator set or other loads when needed. For example, two DC 12V batteries connected in series form a DC 24V power output. As used herein, "DC" refers to direct current.

[0047] In this disclosure, the term "generator set" refers to a device that converts other forms of energy into electrical energy.

[0048] In the embodiments of this disclosure, the term "contactor" refers to a DC contactor or an AC contactor. When the coil inside the contactor is energized, it generates a magnetic field, which drives the contacts to close, thereby opening or closing the circuit.

[0049] In the embodiments of this disclosure, the term "changeover switch" refers to a low-voltage switch capable of switching multiple positions.

[0050] Figure 1 This is a schematic diagram illustrating the composition of a battery control device according to at least one embodiment of the present disclosure. The generator set 200 includes a primary generator set 203, a primary generator set starter motor 201, a secondary generator set 204, and a secondary generator set starter motor 202. The primary generator set starter motor 201 is used to start the primary generator set 203, and the secondary generator set starter motor 202 is used to start the secondary generator set. Figure 1 As shown, the battery control device includes a first battery pack 104, a second battery pack 107, a negative contactor 106, a positive contactor 108, and a changeover switch 101.

[0051] One end of the negative contactor 106 is connected to the negative terminal of the starting motor 201 of Unit 1 and the negative terminal of the starting motor 202 of Unit 2, and the other end of the negative contactor 106 is connected to the negative terminal of the first battery pack 104 and the negative terminal of the second battery pack 107.

[0052] One end of the positive contactor 108 is connected to the positive terminal of the starter motor 201 of Unit 1 and the positive terminal of the first battery pack 104, and the other end of the positive contactor 108 is connected to the positive terminal of the starter motor 202 of Unit 2 and the positive terminal of the second battery pack 107.

[0053] The selector switch 101 has a first position, and its output is connected to the control terminal of the negative contactor 106 and the control terminal of the positive contactor 108. This first position is used to implement the power-off protection mode of the battery control device.

[0054] When the changeover switch 101 is in the first position, the negative contactor 106 and the positive contactor 108 are in the open state, so that the first battery pack 104 and the second battery pack 107 have no power supply circuit, thereby stopping the power supply to the generator set.

[0055] It should be noted that the above connections can all be made via cables or other connecting lines, and the embodiments disclosed herein are not limited in this regard. The negative contactor 106 and positive contactor 108, as conventional electronic devices, typically have control circuits and can achieve both open and closed states. The changeover switch 101 is used to switch the battery control mode and can have other positions besides the first position to achieve other battery control modes. Battery control modes include, but are not limited to, power-off protection modes.

[0056] The generator set 200 includes, but is not limited to, two or more units; adding a unit only requires adding the corresponding power circuit. Each of the two units, Unit 1 203 and Unit 2 204, is equipped with a starter motor, namely starter motor 201 for Unit 1 and starter motor 202 for Unit 2. To effectively manage and control the starting and power supply of these units, the battery control device is designed with a changeover switch 101, a negative contactor 106, and a positive contactor 108. The changeover switch 101, as the core component, allows for precise control of the negative contactor 106 and the positive contactor 108 through switching between different positions, thereby determining the power supply status of each unit in the generator set 200.

[0057] The first position is equivalent to activating the power-off protection mode, including but not limited to the 0° position. In this position, the battery control device 100 is in the off state, the control circuit inside the battery control device 100 is in the open state, the coils inside the negative contactor 106 and the positive contactor 108 are not energized, the negative contactor 106 and the positive contactor 108 are in the open state, and the first battery pack 104 and the second battery pack 107 cannot form a power circuit because the negative contactor 106 and the positive contactor 108 are in the open state, thus preventing the battery from being depleted.

[0058] During implementation, after the selector switch 101 is placed in the first position, the battery control device enters the power-off protection mode. In the power-off protection mode, the negative contactor 106 and the positive contactor 108 are in the open state. The entire battery control device is in a non-operating state, the first battery pack 104 and the second battery pack 107 do not provide power to the outside, and there is no energized circuit for either the first battery pack 104 or the second battery pack 107. This effectively prevents the batteries from running out of power and ensures that the batteries can still provide good charging performance even when not in use for a long time.

[0059] Some embodiments of this disclosure also provide vehicles corresponding to the above-described battery control device.

[0060] The battery control device provided in at least one embodiment of this disclosure is applicable to any existing generator set usage scenario, and the embodiments of this disclosure are not limited thereto. For example, the device can be applied to different types of generator sets such as wind power, hydropower, or thermal power. In wind power scenarios, when wind speed fluctuations cause unstable power output, the device can effectively balance the supply and demand of the power system by precisely controlling the charging and discharging process of the battery, ensuring the continuity and stability of power supply. In hydropower, facing changes in water flow, the device can also flexibly adjust the energy storage and release strategy of the battery to adapt to fluctuations in power demand. In addition, in the field of thermal power generation, the device can also play an important role, especially during periods of low power demand, by storing excess power and releasing it during peak periods to improve energy utilization efficiency and the overall economic benefits of the power generation system. In summary, the battery control device provided in the embodiments of this disclosure has broad applicability and can meet the needs of different types of generator sets in different usage scenarios.

[0061] Compared to related technologies, the battery control device disclosed herein, through the inclusion of a changeover switch 101, a negative contactor 106, and a positive contactor 108, achieves a power-off protection function in the first position. This effectively prevents the first battery pack 104 and the second battery pack 107 from becoming depleted, eliminating the need for periodic generator start-up or external battery charging maintenance, thus simplifying battery management and maintenance. Furthermore, the negative terminal of the battery in this control device does not need to be connected to the vehicle frame to form a circuit, thereby avoiding the risk of battery damage due to abnormal frame potential. The design of the changeover switch 101 allows operators to flexibly select the battery's operating state, easily achieving power-off protection. The synergistic effect of the negative contactor 106 and the positive contactor 108 ensures safe isolation of the battery in the power-off protection mode, effectively preventing current leakage and battery self-discharge. This device not only improves the stability and safety of the vehicle's power supply but also reduces additional costs caused by improper battery maintenance. Additionally, the device is easy to install and remove, facilitating operation during vehicle maintenance and upgrades.

[0062] The first battery pack 104 and the second battery pack 107 include, but are not limited to, lead-acid batteries. Lead-acid batteries are characterized by high energy density, long lifespan, and low self-discharge rate, and can maintain stable performance in various harsh environments.

[0063] The negative contactor 106 and the positive contactor 108 include, but are not limited to, electromagnetic contactors, and may also be vacuum contactors or semiconductor contactors, ensuring their stability and reliability under various operating conditions. Electromagnetic contactors have a fast response characteristic, enabling them to connect or disconnect circuits in a short time, effectively protecting the battery and the entire power supply system.

[0064] The changeover switch 101 typically employs high-quality materials and advanced manufacturing processes, giving it high strength, high wear resistance, and high corrosion resistance, enabling it to maintain stable performance in various harsh working environments. Simultaneously, the changeover switch 101 should be easy to operate, allowing for rapid switching between battery control modes. Battery control modes include, but are not limited to, three types: power outage protection mode, independent power supply mode, and parallel power supply mode.

[0065] In some embodiments, to integrate the power supply protection and power supply mode switching functions into a single control device, the changeover switch 101 is further provided with a second position and a third position. When the changeover switch 101 is in the second position, which is equivalent to activating the independent power supply mode, the negative contactor 106 is in the closed state and the positive contactor 108 is in the open state, so as to supply power to the starter motor 201 of Unit 1 and the starter motor 202 of Unit 2 separately. When the changeover switch 101 is in the third position, which is equivalent to activating the parallel power supply mode, both the negative contactor 106 and the positive contactor 108 are in the closed state, so as to supply power to the starter motor 201 of Unit 1 and the starter motor 202 of Unit 2 simultaneously.

[0066] The selector switch 101 includes, but is not limited to, a first position, a second position, and a third position, meaning the selector switch 101 has, but is not limited to, a three-position design. For example, a fourth position can also be set to realize different power supply circuits between the battery and the generator set. The battery control device can intelligently switch between three operating modes: power failure protection mode, independent power supply mode, and parallel power supply mode.

[0067] The selector switch 101 is in the second position, which includes, but is not limited to, the 45° position. In independent power supply mode, the battery control device 100 is in the ON state, the contacts on the control circuit of the negative contactor 106 are energized, controlling the coil inside the negative contactor 106 to close and energize it. The control circuit of the positive contactor 108 is not energized, and the coil inside the positive contactor 108 cannot be closed, so the positive contactor 108 remains in the OFF state. The first battery pack 104 and the second battery pack 107 each form their own electrical circuit, and each battery pack starts the generator set independently. This allows the other battery pack to independently power the generator set or other equipment in the event that one battery pack is depleted. The contacts of the negative contactor 106 and the positive contactor 108 can be configured with one or more contacts as needed.

[0068] The selector switch 101 is in the third position, which includes, but is not limited to, the -45° position. In parallel power supply mode, the battery control device 100 is in the ON state, the contacts on the control circuit of the negative contactor 106 are energized, thereby controlling the coil inside the negative contactor 106 to close. The contacts on the control circuit of the positive contactor 108 are energized, thereby controlling the coil inside the positive contactor 108 to close. Both the negative contactor 106 and the positive contactor 108 are closed and energized, and the positive and negative terminals of the first battery pack 104 and the second battery pack 107 are connected together, simultaneously providing starting power to both generator set 203 and generator set 204. This allows the parallel power supply mode to be activated when a larger power output is required or when the battery packs need to be balanced. At this time, the selector switch 101 connects to the two battery packs, enabling them to work in parallel and jointly provide power to the generator set or other equipment. For example, when the battery is depleted and cannot start the generator set, parallel power supply can be used to increase the capacity of the battery pack, which can effectively start the generator set.

[0069] Parallel connection of battery packs can be achieved through synchronous control of positive and negative contactors, while maintaining independent management capabilities within the parallel mode and allowing for quick switching back to independent power supply mode. This design not only improves power supply flexibility but also optimizes battery pack efficiency and extends battery life.

[0070] In some embodiments, to achieve a preferred power supply control effect, during the startup process of Unit 1 203 and Unit 2 204, when both the first battery pack 104 and the second battery pack 107 are powered, Unit 1 203 and Unit 2 204 operate under independent power supply mode, each supplying power independently. When one of the battery packs 104 and 107 is depleted, the first battery pack 104 and the second battery pack 107 are connected in parallel to supply power, enabling Unit 1 203 and Unit 2 204 to be powered on and started.

[0071] Figure 2 A schematic diagram illustrating the composition of another battery control device provided for at least one embodiment of this disclosure. (See diagram below.) Figure 2 As shown, in Figure 1In addition to the above, for precise power supply control, the battery control device also includes a changeover switch control circuit 109 and a battery box 102. The changeover switch control circuit 109 generates control signals for the negative contactor 106 and the positive contactor 108 based on the selected position of the changeover switch 101. The changeover switch 101 is mounted on the outer surface of the battery box 102, and the changeover switch control circuit is located on the inner side. The structure of the changeover switch control circuit 109 is not unique; its design can be flexibly selected according to specific needs. For example, it can be constructed using switching elements, such as relays or transistors, to achieve the required logic control functions. The position selection of the changeover switch 101 determines whether the No. 1 unit start motor 201 and the No. 2 unit start motor 202 start and stop, as well as the charging and discharging state of the battery. When the changeover switch 101 is in the first position, the changeover switch control circuit 109 generates a first control signal, causing both the negative contactor 106 and the positive contactor 108 to disconnect. When the selector switch 101 is in the second position, the selector switch control circuit 109 generates a second control signal, causing the negative contactor 106 to close and the positive contactor 108 to open, thus entering the independent power supply mode. When the selector switch 101 is in the third position, the selector switch control circuit 109 generates a third control signal, causing both the negative contactor 106 and the positive contactor 108 to close, thereby connecting the first battery pack 104 and the second battery pack 107 in parallel.

[0072] In some embodiments, to ensure stable and reliable output of the changeover switch control circuit 109, the changeover switch control circuit 109 includes a first branch for connecting to the control terminal of the negative contactor 106 and a second branch for connecting to the control terminal of the negative contactor 106. One end of the first branch is connected to the positive terminal B+ of the battery, or may be connected to other power sources or controllers, and the other end is connected to the negative terminal B- of the battery via the negative contactor 106. One end of the second branch is connected to the positive terminal B+ of the battery, or may be connected to other power sources or controllers, and the other end is connected to the negative terminal B- of the battery via the positive contactor 108. When the selector switch 101 is switched to the first position, both the first and second branches are disconnected, causing the negative contactor 106 and the positive contactor 108 to disconnect. When the selector switch 101 is switched to the second position, the first branch is connected and the second branch is disconnected, causing the negative contactor 106 to connect and the positive contactor 108 to disconnect. When the selector switch 101 is switched to the third position, both the first and second branches are connected, causing the negative contactor 106 and the positive contactor 108 to connect. The connection and disconnection of the first and second branches are directly controlled by the selector switch 101. Specifically, the selector switch 101 may contain mechanical contacts or electronic switches. These contacts or switches change their state when the selector position is switched, thereby affecting the connection and disconnection of the first and second branches through the selector switch control circuit 109. This design ensures that the battery pack can be connected to or disconnected from the circuit in a predetermined manner under different operating modes, thus meeting the various operating requirements of the generator set. In addition, the changeover switch control circuit 109 may also include protection circuitry to prevent short circuits or overloads caused by misoperation or malfunction, further improving the reliability and safety of the entire battery control device.

[0073] Figure 3 This is a schematic diagram illustrating the composition of a changeover switch control circuit provided for at least one embodiment of this disclosure. Figure 3As shown, to achieve precise control of the opening and closing of the first and second branches, the first branch is provided with a first contact A for controlling the on / off state of the first branch. The number of first contacts A can be one or more. The second branch is provided with a second contact B for controlling the on / off state of the second branch. The number of second contacts B can also be one or more. Specifically, when the changeover switch 101 is switched to the first position, both first contacts A and second contacts B are de-energized, thus disconnecting both the first and second branches. When the changeover switch 101 is switched to the second position, first contact A is energized and second contact B is de-energized, thus connecting the first branch and disconnecting the second branch. Furthermore, when the changeover switch 101 is switched to the third position, both first contacts A and second contacts B are energized, thus connecting both the first and second branches. It should be noted that the changeover switch control circuit 109 can also be provided with other branches besides the first and second branches. Each branch is provided with one or more contacts to realize other energized circuits different from those of the first and second branches.

[0074] Figure 4 This is a schematic diagram illustrating the composition of yet another battery control device provided in at least one embodiment of the present disclosure. (See diagram below.) Figure 4 As shown, in Figure 1 To ensure smooth start-up and operation of the generator set under various operating conditions, the battery control device also includes a negative cable 103 and a positive cable 105. One end of the negative cable 103 is connected to the negative contactor 106, and the other end is connected to the negative terminal of the starter motor 201 of unit 1 and the negative terminal of the starter motor 202 of unit 2. One end of the positive cable 105 is connected to the positive contactor 108, and the other end is connected to the positive terminal of the first battery pack 104 and the positive terminal of the second battery pack 107. Both the negative contactor 106 and the positive contactor 108 are controlled by the changeover switch control circuit 109. When the changeover switch 101 is in different positions, the changeover switch control circuit 109 controls the opening and closing of the negative contactor 106 and the positive contactor 108 accordingly, thereby determining whether the starter motor 201 of Unit 1 and the starter motor 202 of Unit 2 are connected to the power supply of the first battery pack 104 or the second battery pack 107. The negative cable 103 and the positive cable 105 are wrapped with high-quality insulation material to ensure the safety and stability of current transmission. This design not only simplifies the battery pack switching process but also improves the accuracy and reliability of switching, ensuring that the generator set can start and operate smoothly under various operating conditions.

[0075] Figure 5 A schematic diagram of component connections for a battery control device provided in at least one embodiment of this disclosure. (See diagram below.) Figure 5As shown, one end of the negative contactor 106 is connected via a cable to the negative terminal of the starter motor 201 of Unit 1 and the negative terminal of the starter motor 202 of Unit 2. The other end of the negative contactor 106 is connected via a cable to the negative terminal of the first battery pack 104 and the negative terminal of the second battery pack 107. One end of the positive contactor 108 is connected via a cable to the positive terminal of the starter motor 201 of Unit 1 and the positive terminal of the first battery pack 104. The other end of the positive contactor 108 is connected via a cable to the positive terminal of the starter motor 202 of Unit 2 and the positive terminal of the second battery pack 107.

[0076] In some embodiments, to ensure operational effectiveness, the selector switch 101 is a mechanical rotary switch. The first, second, and third positions correspond to different preset angles when the selector switch 101 is rotated. Each position corresponds to a different battery connection state, allowing operators to switch battery packs simply by rotating the selector switch 101. This mechanical rotary switch design is intuitive and easy to operate, greatly reducing operational difficulty and the risk of misoperation. Simultaneously, the preset angles of the selector switch 101 ensure a smooth transition when switching between different positions, avoiding momentary interruptions or instability in battery power, thereby further improving the operational stability and reliability of the generator set.

[0077] In some embodiments, for ease of operation, the first gear is set to a 0° gear vertically, the second gear is set to a gear located to one side of the 0° gear and forming a first angle with the 0° gear, and the third gear is set to a gear located to the other side of the 0° gear and forming a second angle with the 0° gear. The first and second angles can be equal or unequal, depending on actual needs. When the first and second angles are equal, for example, both 45°, the rotation path of the changeover switch 101 is evenly distributed, ensuring that the operator rotates the same angle each time when switching battery packs, facilitating memorization and operation. When the first and second angles are unequal, a smaller rotation angle can be set for the gear corresponding to the battery pack with higher switching frequency, based on the needs of the actual usage scenario, to complete the switching operation more quickly and improve work efficiency. Furthermore, the gear settings of the changeover switch 101 can be customized according to factors such as the specific model and power of the generator set and the capacity of the battery pack to meet the needs of different customers.

[0078] In some embodiments, to simplify battery control, the battery cells of the first battery pack 104 and the second battery pack 107 are connected in series. Furthermore, the number of battery cells in the first battery pack 104 and the second battery pack 107 is equal. This design ensures consistent voltage output between the two battery packs, eliminating the need to adjust voltage parameters when switching between different battery packs, further simplifying the operation. Simultaneously, the series connection of the battery cells increases the overall voltage of the battery packs, meeting the generator set's high-voltage input requirements. Moreover, the equal number of battery cells in the first battery pack 104 and the second battery pack 107 not only ensures a balance in capacity and performance between the two battery packs but also facilitates seamless switching, ensuring continuous and stable operation of the generator set.

[0079] In some embodiments, to ensure the safety and reliability of the battery control device, both the negative and positive contactors are DC contactors. DC contactors are capable of withstanding large currents and voltages, and are reliable in operation and have a long lifespan. The use of DC contactors for the negative contactor 106 and positive contactor 108 ensures that the circuit can be quickly and stably switched on and off when the battery pack is connected or disconnected, avoiding power fluctuations or malfunctions caused by poor contact or slow operation. Furthermore, the design of the DC contactors meets the high requirements of generator sets for electrical components, ensuring the safety and reliability of the entire battery control device.

[0080] The following provides an example of a control method for the battery control device provided in this disclosure. The method includes the following steps S10-S30.

[0081] Step S10: When the changeover switch 101 is switched to the first position, the negative contactor 106 and the positive contactor 108 are triggered to disconnect synchronously, so as to realize the power supply protection of the first battery pack 104 and the second battery pack 107 by cutting off the power supply circuit of the first battery pack 104 and the second battery pack 107.

[0082] Step S20: When the changeover switch 101 is switched to the second position, the negative contactor 106 is triggered to close and the positive contactor 108 remains open, so that the first battery pack 104 independently supplies power to the starter motor 201 of the first unit and the second battery independently supplies power to the starter motor 202 of the second unit.

[0083] Step S30: When the changeover switch 101 is switched to the third position, the negative contactor 106 and the positive contactor 108 are triggered to close synchronously, so that the first battery pack 104 and the second battery pack 107 are connected in parallel to supply power to the starter motor 201 of Unit 1 and the starter motor 202 of Unit 2 synchronously.

[0084] The following provides an example of another control method for the battery control device provided in this disclosure. The method includes the following steps S40-S60.

[0085] Step S40: Identify whether the first battery pack 104 and the second battery pack 107 are undercharged.

[0086] Step S50: When neither the first battery pack 104 nor the second battery pack 107 is undercharged, control the changeover switch 101 to switch to the second position.

[0087] Step S70: When one of the first battery pack 104 and the second battery pack 107 is undercharged, control the changeover switch 101 to switch to the third position.

[0088] Figure 6 This is a structural block diagram of a vehicle provided for at least one embodiment of the present disclosure. For example... Figure 6 As shown, the vehicle 1 includes a generator set 200 and a battery control device 100 as provided in any of the above embodiments.

[0089] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A battery control device for a generator set, the generator set comprising a No. 1 generator unit, a No. 1 generator unit starter motor, a No. 2 generator unit, and a No. 2 generator unit starter motor, characterized in that, The battery control device includes: First battery pack and second battery pack; A negative contactor, one end of which is connected to the negative terminal of the starting motor of Unit 1 and the negative terminal of the starting motor of Unit 2, and the other end of which is connected to the negative terminal of the first battery pack and the negative terminal of the second battery pack. A positive contactor, one end of which is connected to the positive terminal of the starter motor of Unit 1 and the positive terminal of the first battery pack, and the other end of which is connected to the positive terminal of the starter motor of Unit 2 and the positive terminal of the second battery pack; and, A changeover switch, wherein the changeover switch is provided with a first position, and the output terminal of the changeover switch is connected to the control terminal of the negative contactor and the control terminal of the positive contactor; When the selector switch is in the first position, the negative contactor and the positive contactor are in the open state.

2. The battery control device according to claim 1, characterized in that, The selector switch is also provided with a second position and a third position; Specifically, when the selector switch is in the second position, the negative contactor is in the closed state and the positive contactor is in the open state; and when the selector switch is in the third position, both the negative contactor and the positive contactor are in the closed state.

3. The battery control device according to claim 2, characterized in that, Also includes: Changeover switch control circuit; The changeover switch control circuit includes a first branch for connecting the control terminal of the negative contactor and a second branch for connecting the control terminal of the positive contactor. When the changeover switch is switched to the first position, both the first branch and the second branch are disconnected. When the changeover switch is switched to the second position, the first branch is turned on and the second branch is disconnected. When the changeover switch is switched to the third position, both the first branch and the second branch are turned on.

4. The battery control device according to claim 3, characterized in that, Also includes: A battery box, wherein the changeover switch is mounted on the outer surface of the battery box, and the changeover switch control circuit is provided on the inner side of the battery box.

5. The battery control device according to claim 3, characterized in that, The first branch is provided with a first contact, and the second branch is provided with a second contact; Specifically, when the selector switch is switched to the second position, the first contact is energized and the first branch is connected, while the second contact is de-energized and the second branch is disconnected. When the selector switch is switched to the third position, both the first and second contacts are energized and both the first and second branches are connected.

6. The battery control device according to claim 1 or 2, characterized in that, Also includes: A negative cable, one end of which is connected to the negative contactor, and the other end of which is connected to the negative terminal of the starting motor of Unit 1 and the negative terminal of the starting motor of Unit 2; and, A positive cable, one end of which is connected to the positive contactor, and the other end of which is connected to the positive terminal of the first battery pack and the positive terminal of the second battery pack.

7. The battery control device according to claim 2, characterized in that, The selector switch is a mechanical rotary switch, and the first, second, and third positions are the positions corresponding to different preset angles to which the selector switch is rotated.

8. The battery control device according to claim 2, characterized in that, The first gear position is a 0° gear position set vertically, the second gear position is a gear position set on one side of the 0° gear position and forming a first angle with the 0° gear position, and the third gear position is a gear position set on the other side of the 0° gear position and forming a second angle with the 0° gear position.

9. The battery control device according to claim 1 or 2, characterized in that, The battery cells of both the first and second battery packs are connected in series; and... The number of individual battery cells in the first battery pack and the second battery pack is equal.

10. A vehicle, characterized in that, The vehicle includes a generator set and a battery control device as described in any one of claims 1 to 9.

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