Charger integrated with engine starting function

Abstract

The utility model provides a charger integrated with an engine starting function, which is connected between an input terminal group and an output terminal group, and comprises a high-frequency charger, an input end of which is connected with the input terminal group; an energy storage module; the first switch is controllably communicated with the high-frequency charger and the output terminal group; the second switch is controllably communicated with the high-frequency charger and the energy storage module; the third switch is controllably communicated with the energy storage module and the output terminal group; and the controller is respectively connected with the first switch, the second switch and the third switch. The system has the advantages that the high-frequency charger and the energy storage module are used in a combined mode, continuous and stable charging current can be provided for the battery, the charging efficiency is high, when the battery fails, the energy storage module can provide strong instantaneous current sufficient for starting the engine, the engine can still be started even in the environment without an alternating current power source, and the system is safe and reliable. And the product performance and the user experience are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chargers, in particular to a charger with an integrated engine starting function. Background Art

[0002] Among the mainstream charger products currently sold on the market, chargers with integrated engine start function can be divided into two categories: one is industrial frequency chargers, and the other is high frequency chargers. Although these two types of chargers dominate the market, they have exposed many limitations and problems in actual application, failing to meet the needs of consumers well, and may even cause safety hazards in some extreme cases, seriously affecting user experience.

[0003] There are usually two technical ways to implement the charger integrated engine start function. One is to use a small high-frequency charger in combination with a large power frequency transformer. This design is a hybrid battery charger disclosed in the prior application CN104798282A. High-frequency chargers are mainly designed to meet energy efficiency regulations. Because of their high efficiency, they are easy to pass energy efficiency tests such as the US CEC (California Energy Commission) or DOE (Department of Energy). However, due to their small current output (usually no more than 30A, and a minimum of only a few amperes), consumers still need to rely on large power frequency transformers for charging and device startup in actual use. However, the main problems with this approach are:

[0004] 1) Unstable current: The current is relatively high in the initial stage of charging, and then gradually decreases, which increases the actual charging time. Consumers cannot continuously obtain the nominal maximum current, which may mislead consumers.

[0005] 2) Low charging efficiency: The efficiency of a high-frequency charger at maximum current can reach over 72%, while the efficiency of an industrial frequency transformer is only about 60% when charging at high current, resulting in a large amount of heat loss and energy waste.

[0006] 3) Challenges during startup: Due to the low efficiency of the power frequency transformer and the limited input power, the nominal maximum current (such as 300A) of the wheel chargers on the market has a false component. In actual calculations, assuming that the input power is 120V AC and the maximum allowable current is 15A, the input power is 120V*15A=1800W. Considering that the conversion efficiency of the power frequency transformer during the startup process is approximately 0.55, its actual maximum output power is 1800W*0.55=990W. If the output voltage drops to the minimum effective voltage of 7.2 volts, then under ideal conditions, the maximum effective startup current that the output can provide is only 990W / 7.2V=137.5A, which is far from enough to support the start-up requirements of the device engine when the battery fails completely.

[0007] In addition, due to the low charging efficiency of the power frequency transformer, a large amount of heat will be generated during the startup process, making it difficult to achieve continuous startup. Frequent startup may cause the transformer to overheat or be damaged.

[0008] Another implementation consists of only a large power frequency transformer, which is suitable for markets without energy efficiency requirements. Figure 1 As shown, since the linear battery charger circuit 200 (LINEAR BATTERY CHARGERCIRCUIT) is also used, it also has problems such as unstable current, low charging efficiency and limited starting current. At the same time, due to its large size and weight, it is inconvenient to carry, and it must rely on AC power to start, and it generates a lot of heat. These problems together constitute a bad user experience.

[0009] In summary, existing industrial frequency chargers and high frequency chargers with engine start function generally have the following defects in their designs: the charging current cannot be sustained and stable, the charging efficiency is low, the starting current is small, the equipment is bulky and not easy to carry, it must be connected to an AC power source to start, and it generates a lot of heat during use. These factors greatly restrict the product performance and user experience. Utility Model Content

[0010] In order to solve the above technical problems, the utility model provides a charger with integrated engine starting function.

[0011] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0012] A charger with an integrated engine starting function, connected between an input terminal group and an output terminal group, comprising:

[0013] a high-frequency charger, wherein an input end of the high-frequency charger is connected to the input terminal group;

[0014] an energy storage module;

[0015] a first switch, controllably connecting the first output end of the high-frequency charger and the first output terminal of the output terminal group;

[0016] a second switch, controllably connecting the second output terminal of the high-frequency charger and the input terminal of the energy storage module;

[0017] a third switch, controllably connecting the output end of the energy storage module and the first output terminal of the output terminal group;

[0018] A controller, wherein a first output terminal of the controller is connected to the first switch, a second output terminal of the controller is connected to the second switch, and a third output terminal of the controller is connected to the third switch.

[0019] Preferably, it also includes:

[0020] The reverse connection protection sensor is connected between the first output terminal of the high-frequency charger and the first input terminal of the controller.

[0021] Preferably, it also includes:

[0022] a first current sensor connected between the high-frequency charger and the second output terminal of the output terminal group;

[0023] The second input terminal of the controller is connected to the first current sensor.

[0024] Preferably, it also includes:

[0025] a second current sensor connected between the energy storage module and the second output terminal of the output terminal group;

[0026] The third input terminal of the controller is connected to the second current sensor.

[0027] Preferably, it also includes:

[0028] A voltage sensor is connected between the fourth input terminal of the controller and the first output terminal of the output terminal group.

[0029] Preferably, it also includes: a display screen and buttons electrically connected to the controller.

[0030] Preferably, the energy storage module is a combination of one or more of a supercapacitor module, a lithium battery, and a lead-acid battery.

[0031] Preferably, when the first switch is closed, the high-frequency charger provides a charging current or a starting current to the output terminal group; and / or

[0032] When the second switch is closed, the high-frequency charger provides a charging current to the energy storage module; and / or

[0033] When the third switch is closed, the energy storage module provides a starting current to the output terminal group.

[0034] The advantages or beneficial effects of the technical solution of the utility model are:

[0035] The utility model uses a high-frequency charger and an energy storage module in combination to provide a continuous and stable charging current for the battery with high charging efficiency. When the external battery fails, the energy storage module can provide a strong instantaneous current sufficient to start the engine. The engine can still be started in an environment without an AC power supply, which greatly improves the performance of the product and improves the user experience. At the same time, the product generates little heat during use, and its size and weight are also small, making it easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural block diagram of an industrial frequency charger with an integrated engine start function in the prior art;

[0037] Figure 2 This is a structural block diagram of a charger with integrated engine start function in a preferred embodiment of the utility model;

[0038] Figure 3 In a preferred embodiment of the present utility model, the energy storage module adopts a structural block diagram of a supercapacitor module;

[0039] Figure 4 This is a structural block diagram of a preferred embodiment of the utility model, in which the energy storage module adopts a lithium battery;

[0040] Figure 5 This is a structural block diagram of a preferred embodiment of the present invention, in which the energy storage module adopts a lead-acid battery. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0044] In a preferred embodiment of the utility model, based on the above problems existing in the prior art, a charger with an integrated engine start function is provided, which is connected between an input terminal group and an output terminal group; wherein the input terminal group includes a live wire L (Live Wire) and a neutral wire N (Neutral Wire) for connecting to a power source; the power source is an AC power source;

[0045] The output terminal group includes a first output terminal (Bat+) and a second output terminal (Bat-), and the two output terminals are respectively connected to the positive electrode and the negative electrode of the battery to achieve electrical connection between the charger and the external battery.

[0046] like Figure 2 As shown, the charger includes:

[0047] A high-frequency charger 1, wherein the input end of the high-frequency charger 1 is connected to a live wire L and a neutral wire N of an input terminal group;

[0048] an energy storage module 2;

[0049] A first switch SW1, controllably connecting the first output end of the high-frequency charger 1 and the first output terminal of the output terminal group;

[0050] a second switch SW2, controllably connecting the second output terminal of the high-frequency charger 1 and the input terminal of the energy storage module 2;

[0051] a third switch SW3, controllably connecting the output end of the energy storage module 2 and the first output terminal of the output terminal group;

[0052] A controller 3, wherein a first output terminal of the controller 3 is connected to a first switch SW1, a second output terminal of the controller 3 is connected to a second switch SW2, and a third output terminal of the controller 3 is connected to a third switch SW3.

[0053] Specifically, considering that the existing industrial frequency chargers and high frequency chargers with engine start function generally have the following defects in their designs: the charging current cannot be sustained and stable, the charging efficiency is low, the starting current is small, the equipment is bulky and not easy to carry, it must be connected to an AC power source to start, and it generates a lot of heat during use, these factors greatly restrict the product performance and user experience.

[0054] In this embodiment, the charger with integrated engine start function mainly includes key components such as a high-frequency charger 1, an energy storage module 2, three switches (a first switch SW1, a second switch SW2, and a third switch SW3), and a controller 3.

[0055] As the main power conversion device, the high-frequency charger 1 efficiently converts the AC power supply connected to the power grid to provide a stable charging current for the battery. The high-frequency charger 1 has two input terminals for connecting the input terminal group (live wire L and neutral wire N), and three output terminals, one of which is connected to the first output terminal (Bat+) of the output terminal group through the first switch SW1, and the other is connected to the energy storage module 2 through the second switch SW2, and another is connected to the second output terminal (Bat-) of the output terminal group. In addition, the high-frequency charger can meet the CEC or DOE energy efficiency regulations due to its high efficiency.

[0056] The energy storage module 2 is a component for storing electric energy, and its function is to provide instantaneous high-intensity current to start the engine when needed (such as when the external battery fails).

[0057] The controller 3 plays a core control role in the entire charger. Its first output terminal, second output terminal and third output terminal are respectively connected to the first switch SW1, the second switch SW2 and the third switch SW3. According to the working state of the charger and user needs, the controller 3 controls the opening and closing states of these three switches to flexibly switch the connection between the high-frequency charger 1 and the output terminal group, the high-frequency charger 1 and the energy storage module 2, and the energy storage module 2 and the output terminal group, thereby ensuring the stability and efficiency of the charging process and the supply of large current when the engine is started.

[0058] As a preferred embodiment, when the first switch SW1 is closed, the high-frequency charger 1 provides a charging current or a starting current to the output terminal group; and / or

[0059] When the second switch SW2 is closed, the high-frequency charger 1 provides charging current to the energy storage module 2; and / or

[0060] When the third switch SW3 is closed, the energy storage module 2 provides a starting current to the output terminal group.

[0061] Specifically, the first switch SW1 is used to control the connection between the high-frequency charger 1 and the output terminal group. When the first switch SW1 is closed, the high-frequency charger 1 directly provides a continuous and stable charging current to the battery by efficiently converting the input AC power supply.

[0062] The second switch SW2 is used to control the connection between the high-frequency charger 1 and the energy storage module 2. When the power of the energy storage module 2 is insufficient, the second switch SW2 is controlled to be closed, and the high-frequency charger 1 charges the energy storage module 2 to store enough energy, so that the energy storage module 2 can provide the battery with enough current for starting the engine regardless of whether the high-frequency charger is connected to the input AC power supply.

[0063] The third switch SW3 is used to control the connection between the energy storage module 2 and the output terminal group. When the third switch SW3 is closed, the energy storage module 2 provides the high current required for starting to the external battery. Preferably, when the input end of the high-frequency charger 1 is connected to an AC power supply, the high-frequency charger 1 can also provide starting current to the external battery at the same time as the energy storage module 2. As an example and not a limitation, assuming that the energy storage module 2 provides 300A current and the high-frequency charger 1 provides 20A current, the energy storage module 2 and the high-frequency charger 1 provide 320A current at the same time, which can further improve the starting efficiency. It should be noted that this is only an illustrative example and is not a specific limitation on the actual power supply capacity of the energy storage module 2 and the high-frequency charger 1. In fact, the current output of the two can be flexibly configured and adjusted according to the actual application scenarios and requirements.

[0064] Furthermore, when the external battery fails, that is, the battery cannot provide enough instantaneous high current for engine starting for some reason, the third switch SW3 is closed to establish a path between the energy storage module 2 and the output terminal group, and the energy storage module 2 quickly replaces the battery to provide the current required for starting the car engine. Therefore, even if there is a problem with the battery or the battery is low, the vehicle can still force the engine to start through the charger with integrated engine start function, which greatly improves the practicality and emergency handling capabilities of the product. This design effectively overcomes the problem that traditional chargers cannot start the engine when the external battery fails, and also optimizes the overall performance of the charger and improves the user experience.

[0065] As a preferred embodiment, the invention further comprises:

[0066] The reverse connection protection sensor 4 is connected between the first output terminal of the high-frequency charger 1 and the first input terminal of the controller 3 .

[0067] Specifically, in order to ensure the safety and reliability of the equipment and prevent damage to the charger or safety accidents caused by reverse battery polarity, in this embodiment, a reverse connection protection sensor 4 is provided to detect whether the battery polarity connection is correct to prevent damage to the equipment caused by reverse battery connection.

[0068] Furthermore, the input end of the reverse protection sensor 4 is electrically connected to the connection between the high-frequency charger 1 and the first switch SW1, and the output end of the reverse protection sensor 4 is connected to the first input end of the controller 3, so as to realize real-time monitoring of the polarity of the connection between the output terminal group and the battery. The specific monitoring principle is: when the user connects the charger to the battery, the reverse protection sensor 4 will immediately detect the connection status between the output terminal group and the positive and negative poles of the battery. If it is detected that the battery polarity is reversed, that is, the Bat+ terminal is connected to the negative pole of the battery, or the Bat- terminal is connected to the positive pole of the battery, the reverse protection sensor 4 will immediately send an alarm signal to the controller 3, and prevent the high-frequency charger 1 from outputting current to the battery, thereby effectively preventing equipment damage or safety hazards caused by reverse battery polarity.

[0069] In addition, after receiving the alarm signal from the reverse connection protection sensor 4, the controller 3 can display an error message on the display screen to notify the user to correct the battery polarity connection error in time to ensure the safety and normal progress of the charging process.

[0070] As a preferred embodiment, the invention further comprises:

[0071] a first current sensor 5 connected between the high frequency charger 1 and the second output terminal of the output terminal group;

[0072] The second input terminal of the controller 3 is connected to the first current sensor 5 .

[0073] Specifically, in this embodiment, a first current sensor 5 is provided on the connection line between the high-frequency charger 1 and the second output terminal (Bat-) of the output terminal group to detect the charging current output from the high-frequency charger 1 to the battery in real time; at the same time, the detected current data is transmitted to the controller 3, and the controller 3 controls the opening and closing state of the first switch SW1 according to the actual current size and the battery charging state, thereby effectively preventing the occurrence of adverse phenomena such as overcharging and undercharging.

[0074] In addition, the controller 3 can also determine the state of the battery based on the current data so as to enable the energy storage module 2 to provide instantaneous large current for engine starting when necessary.

[0075] As a preferred embodiment, the invention further comprises:

[0076] a second current sensor 6 connected between the energy storage module 2 and the second output terminal of the output terminal group;

[0077] The third input terminal of the controller 3 is connected to the second current sensor 6 .

[0078] Specifically, in this embodiment, a second current sensor 6 is arranged on the connecting line between the energy storage module 2 and the second output terminal (Bat-) of the output terminal group to monitor and record the current flowing from the energy storage module 2 to the battery in real time; at the same time, the detected current data is fed back to the controller 3, and the controller 3 turns on or off the third switch SW3 according to the actual starting current size and the battery charging status, thereby effectively preventing the occurrence of adverse phenomena such as overcharging and undercharging; in addition, when the external battery fails, it ensures that the energy storage module 2 can safely and effectively provide the high current required for starting, thereby improving the overall performance of the charger.

[0079] As a preferred embodiment, the invention further comprises:

[0080] A voltage sensor 7 is connected between the fourth input terminal of the controller 3 and the first output terminal of the output terminal group.

[0081] Specifically, in this embodiment, a voltage sensor 7 is provided between the fourth input terminal and the first output terminal (Bat+) of the controller 3 to detect voltage data at both ends of the battery in real time, and the detected voltage data is fed back to the controller 3 .

[0082] Furthermore, the controller 3 can understand the charging status of the battery based on the real-time voltage information fed back by the voltage sensor 7, such as whether the battery voltage reaches a preset charging threshold, whether it is fully charged, whether there is overvoltage or undervoltage, etc., and then the controller 3 can adjust the operating mode of the charger according to the charging status of the battery, control the closing and opening of the first switch SW1, the second switch SW2 and the third switch SW3, and achieve precise control of the charging process and the engine starting process, thereby effectively avoiding safety problems caused by overcharging, undercharging or abnormal voltage of the battery, and further optimizing the performance and user experience of the product.

[0083] As a preferred embodiment, the invention further comprises:

[0084] A power detector 8 is connected between the energy storage module 2 and the fifth input terminal of the controller 3 .

[0085] Specifically, in this embodiment, by setting a power detector 8 between the energy storage module 2 and the fifth input terminal of the controller 3, the remaining power information of the energy storage module 2 is monitored in real time, and the real-time power data is fed back to the controller 3. Further, after receiving the power data fed back by the power detector 8, the controller 3 controls the closing and opening of the second switch SW2 according to the remaining power of the energy storage module 2.

[0086] When the energy storage module 2 is low on power, the controller 3 controls the second switch SW2 to close, and charges the energy storage module 2 in advance through the high-frequency charger 1; or prompts the user of the current power status of the energy storage module through the display screen to ensure that the necessary energy support can be provided for engine starting when needed, thereby improving the overall performance of the charger and the user's experience.

[0087] When the energy storage module 2 is fully charged, the energy storage module 2 can provide the battery with sufficient current for starting the engine regardless of whether the high-frequency charger 1 is connected to the input AC power supply.

[0088] Furthermore, the power supply end of the controller 3 is connected to the high-frequency charger 1 and the energy storage module 2 respectively. When the input end of the high-frequency charger 1 is connected to an AC power source, the high-frequency charger 1 or other AC / DC auxiliary power supply supplies power to the controller 3 to achieve normal operation and function execution of the controller 3; when the input end of the high-frequency charger 1 is not connected to an AC power source, the energy storage module 2 supplies power to the controller 3 to achieve normal operation and function execution of the controller 3, ensuring that the engine can still be started in an environment without an AC power source, significantly expanding the application scenarios of the product and improving the convenience of use.

[0089] As a preferred embodiment, it further includes: a display screen 9 electrically connected to the controller 3 .

[0090] Specifically, in this embodiment, an intuitive interactive interface is provided to the user through the display screen 9, and the display screen 9 realizes data exchange with the controller 3 through electrical connection. The controller 3 collects various parameters of the charger during operation in real time, and converts them into visual information for presentation on the display screen.

[0091] Furthermore, the display screen 9 can clearly display various relevant information, such as battery voltage, charging current, remaining power of the energy storage module 2, current operation mode, switch on / off status and other data.

[0092] The charger in this embodiment has at least three operation modes, including a charging mode, a start mode, and a forced start mode.

[0093] When the user selects the charging mode, in the charging mode, first, the charger will detect the connection status of the battery. If the battery polarity connection is detected to be incorrect, the display will remind you that it is currently in a reverse connection state. When the battery is correctly connected, the charger will control the on and off state of the first switch SW1 according to the battery status to perform intelligent charging. The charging process follows the classic three-stage charging method, namely the constant current charging stage, the constant voltage charging stage, and the final floating charging stage. In the constant current charging stage, the charger will stabilize the current at the nominal rated current of the battery to ensure that the battery is charged evenly and safely.

[0094] Furthermore, the user can select a battery of corresponding charging current size and battery type according to actual needs, which battery refers to a battery between Bat+ and Bat-, and connect the selected battery to the charger of the utility model.

[0095] When the user selects the start mode, the controller in the charger (such as the microcontroller MCU) will monitor the power of the energy storage module 2 in real time. Once the power of the energy storage module 2 rises to a threshold value sufficient to start the car engine, the charger will automatically enter the start preparation state. At this time, the user only needs to select start through the button or the option on the display screen, and the car engine can be started by controlling the on-off state of the third switch SW3, using the instantaneous large current provided by the energy storage module 2 to assist or replace the battery to complete the engine starting process.

[0096] Furthermore, the starting current is usually in the range of 200A to 1000A, depending on the capacity of the energy storage module 2. The starting process is usually completed in just 2 to 3 seconds.

[0097] In special cases, such as when the battery voltage is so low that the charger cannot effectively identify the battery connection status, the user can select the forced start mode. Before entering this mode, confirm that the battery is correctly connected to prevent safety risks caused by incorrect battery connection. Under the premise of ensuring that the battery is connected correctly, even if the battery voltage is extremely low, the charger can control the on-off state of the third switch SW3 to try to start the car engine through the energy storage module 2 to provide a starting current to solve the starting requirements under extreme conditions (battery power is extremely insufficient, battery voltage is too low to start the engine normally), and avoid damage to the battery or the charger itself.

[0098] As a preferred embodiment, it further includes: a button 10 electrically connected to the controller 3 .

[0099] Specifically, in this embodiment, the buttons provide the user with an intuitive operation mode to realize the human-computer interaction function. The user can perform various operations on the charger through the buttons, such as selecting different operation modes (such as charging mode, start mode, forced start mode, etc.). The button 10 also communicates with the controller 3 through an electrical connection. After the user presses the button, the controller 3 will receive the corresponding command signal and adjust the working state of the charger or display corresponding information according to the command content.

[0100] As a preferred embodiment, the energy storage module 2 is a combination of one or more of a supercapacitor module 201 , a lithium battery 202 , and a lead-acid battery 203 .

[0101] Specifically, in this embodiment, the energy storage module 2 is designed to adopt various types of electrical energy storage elements. The energy storage module 2 can be composed of a supercapacitor module 201, and / or a lithium battery 202, and / or a lead-acid battery 203 to generate high current energy in a short time and provide a large current sufficient to start the engine.

[0102] When the energy storage module 2 uses a supercapacitor module 201, Figure 3 As shown, the fast charging and discharging characteristics of the supercapacitor are utilized to quickly provide peak current when the battery cannot provide sufficient starting current to ensure the smooth starting of the car engine.

[0103] When the energy storage module 2 uses lithium battery 202, Figure 4 As shown, due to the high energy density and stable discharge characteristics of lithium batteries, they can provide auxiliary charging for a long period of time when the battery is low, and can also provide stable starting current when the external battery fails.

[0104] When the lead-acid battery 203 is used as the energy storage module 2, Figure 5 As shown, the lead-acid battery 203 can be used as a backup power source due to its relatively low cost and mature and stable characteristics to provide the current required for starting the engine when necessary.

[0105] In practical applications, the energy storage module 2 can flexibly combine the supercapacitor module 201, the lithium battery 202 and / or the lead-acid battery 203 in series and parallel according to the specific situation to achieve the best performance matching and cost-effectiveness. The controller 3 will ensure the effective interaction between the energy storage module 2 and the high-frequency charger 1 and the output terminal group (Bat+ and Bat-) by accurately controlling the first switch SW2, the second switch SW3 and other related circuits according to the actual type and combination of the energy storage module 2, thereby providing safe and efficient charging and starting services.

[0106] The charger with integrated engine starting function of the utility model is usually connected to the vehicle's starter battery (Starter Battery), which is often called a 12-volt or 24-volt lead-acid battery or lithium battery, etc. These batteries are mainly responsible for providing instantaneous large current when the car engine is started. When the battery of the vehicle is low, the high-frequency charger or energy storage module of the charger of the utility model is used to deliver charging current to the battery. When the battery of the vehicle cannot start the engine normally for some reason, the energy storage module of the charger of the utility model provides additional starting current to help start the engine.

[0107] As a preferred embodiment, the control method of the charger with integrated engine start function is applied, and the charger with integrated engine start function includes at least three operation modes; and includes the following steps:

[0108] At least one of the three operating modes is a startup mode, and in the startup mode, the third switch SW3 is closed, and the energy storage module 2 is configured to provide a startup current to the output terminal group during the startup mode; or the first switch SW1 and the third switch SW3 are closed, and the high-frequency charger 1 and the energy storage module 2 are configured to provide a startup current to the output terminal group simultaneously during the startup mode.

[0109] At least one of the three operation modes is a charging mode, and in the charging mode, the first switch SW1 is closed, and the high-frequency charger 1 is configured to provide a charging current to a battery connected between the output terminal groups during the charging mode.

[0110] At least one of the three operation modes is a forced start-up mode, and in the forced start-up mode, the third switch SW3 is closed, and the energy storage module 2 is configured to provide a start-up current for the output terminal group during the forced start-up mode.

[0111] Furthermore, in the startup mode, according to one or more monitoring parameters, the second switch SW2 is closed and the high-frequency charger 1 is configured to charge the energy storage module 2 during the preparation period for entering the startup mode until a preset condition is met.

[0112] Specifically, the one or more monitoring parameters include the power of the energy storage module 2 .

[0113] Specifically, the one or more monitoring parameters include the battery status of the energy storage module 2 .

[0114] Specifically, the preset condition is that the power of the energy storage module 2 rises to a threshold value sufficient to start the engine.

[0115] The advantages or beneficial effects of adopting the above technical solution are:

[0116] (1) Integrated starting function: The charger of the utility model uses a high-frequency charger and an energy storage module in combination. The two work together to provide a continuous and stable charging current for the battery. When the external battery fails, the energy storage module can provide a strong instantaneous current sufficient to start the engine, greatly improving the functionality of the product.

[0117] (2) Efficient and stable charging performance: Thanks to the application of high-frequency charger, the charger of the utility model realizes continuous and stable charging current, improves charging efficiency, shortens charging time, and reduces energy loss of the battery during charging.

[0118] (3) Strong starting capability: The presence of the energy storage module enables the charger of the utility model to provide high current starting at critical moments, ensuring that the engine can be started smoothly even when the battery is in poor condition, greatly enhancing the product's emergency handling capability and reliability.

[0119] (4) Lightweight, portable and flexible in application: Compared with traditional chargers that use large linear battery chargers, the high-frequency charger and energy storage module occupy a smaller area, making the charger of the utility model compact, light and easy to carry. It can also start the engine in an environment without AC power supply, which significantly expands the application scenarios of the product and improves the convenience of use.

[0120] (5) Low heat generation and high safety: During use, due to the use of high-performance high-frequency charging technology, the charger of this utility model generates low heat, which not only extends the service life of the equipment, but also ensures the safety of the user during operation and improves the user experience.

[0121] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of this specification and illustrations should be included in the protection scope of the present invention.

Claims

1. A charger with integrated engine start function, characterized in that: Connected between an input terminal group and an output terminal group, comprising: a high-frequency charger, wherein an input end of the high-frequency charger is connected to the input terminal group; an energy storage module; a first switch, controllably connecting the first output end of the high-frequency charger and the first output terminal of the output terminal group; a second switch, controllably connecting the second output terminal of the high-frequency charger and the input terminal of the energy storage module; a third switch, controllably connecting the output end of the energy storage module and the first output terminal of the output terminal group; A controller, wherein a first output terminal of the controller is connected to the first switch, a second output terminal of the controller is connected to the second switch, and a third output terminal of the controller is connected to the third switch.

2. The charger with integrated engine start function according to claim 1, characterized in that: Also includes: The reverse connection protection sensor is connected between the first output terminal of the high-frequency charger and the first input terminal of the controller.

3. The charger with integrated engine start function according to claim 1, characterized in that: Also includes: a first current sensor connected between the high-frequency charger and the second output terminal of the output terminal group; The second input terminal of the controller is connected to the first current sensor.

4. The charger with integrated engine start function according to claim 1, characterized in that: Also includes: a second current sensor connected between the energy storage module and the second output terminal of the output terminal group; The third input terminal of the controller is connected to the second current sensor.

5. The charger with integrated engine start function according to claim 1, characterized in that: Also includes: A voltage sensor is connected between the fourth input terminal of the controller and the first output terminal of the output terminal group.

6. The charger with integrated engine start function according to claim 1, characterized in that: Also includes: A power detector is connected between the energy storage module and the fifth input terminal of the controller.

7. The charger with integrated engine start function according to claim 1, characterized in that: Also includes: A display screen and buttons electrically connected to the controller.

8. The charger with integrated engine start function according to claim 1, characterized in that: The energy storage module is a combination of one or more of a supercapacitor module, a lithium battery, and a lead-acid battery.

9. The charger with integrated engine start function according to claim 1, characterized in that: When the first switch is closed, the high-frequency charger provides a charging current or a starting current to the output terminal group; and / or When the second switch is closed, the high-frequency charger provides a charging current to the energy storage module; and / or When the third switch is closed, the energy storage module provides a starting current to the output terminal group.

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