A lithium battery multifunctional power supply with emergency start function

Abstract

The present invention discloses a lithium battery multifunctional power supply with an emergency start function, which belongs to the technical field of power supply stations; it includes an energy storage battery module, which is used to provide electric energy to the power load in the energy storage mode; a starting battery module, which is connected to the energy storage battery module, and is used to provide emergency start electric energy to the starter motor in the emergency start mode; a microcontroller, which is connected to the energy storage battery module and the starting battery module, and switches the power supply mode according to the power consumption strategy, and the power supply mode includes the energy storage mode and the emergency start mode. The beneficial effect of the above technical solution is: due to the adoption of the above technical solution, the energy storage battery and the starting battery are combined, and they are managed by the microcontroller, so that the two functions of energy storage and car starting are realized in the power station at the same time, and it can work in a low temperature environment.

Description

Technical Field

[0001] The invention relates to the technical field of power supply stations, and in particular to a lithium battery multifunctional power supply. Background Art

[0002] The technical paths of Power Stations currently available on the market are mainly selected between lead-acid batteries, lithium iron phosphate batteries, ternary lithium batteries and soft-pack batteries. Among them, the advantages of lead-acid batteries are low prices and high reliability, but they have short lifespans, poor low-temperature performance, and heavy weights, making them difficult to use on a large scale; lithium iron phosphate batteries are widely used in energy storage systems and some mobile energy storage products. Lithium iron phosphate batteries have long cycle lifespans and relatively high safety, but they cannot adapt to low-temperature environments; ternary lithium batteries are mainly used in small energy storage devices for their good energy density and relatively good low-temperature performance, but the BMS (Battery Management System) of ternary lithium batteries is expensive; soft-pack batteries are widely used in Jump-starter products for their good heat dissipation performance and high discharge capacity, but soft-pack batteries have short cycle lifespans and are difficult to achieve energy storage functions.

[0003] In the prior art, Figure 1 As shown, an inverter 13 is used to convert the electric energy of the starting battery 21 and then transmit it to the power load 4, the intelligent starting unit 23 is managed by the microcontroller 3, the display screen 6 visualizes the battery power, and the external clip 7 is used to connect external devices to realize the emergency starting function, but Figure 1 The technical solution does not meet the energy storage cycle requirements and has poor low-temperature performance, making it difficult to be used on a large scale; Figure 2 As shown, the energy storage battery 11 is managed by the energy storage battery manager 12 to supply power to the electrical load 4, and the display screen 6 visualizes the battery power, which can solve the problem of limited energy storage cycles. However, since the discharge rate of the energy storage battery 11 is low, it cannot effectively solve the problem of starting the car. Summary of the invention

[0004] The purpose of the present invention is to provide a lithium battery multifunctional power supply with emergency starting function to solve the above technical problems;

[0005] A lithium battery multifunctional power supply with emergency start function, comprising:

[0006] An energy storage battery module is used to provide electrical energy to the electrical load in an energy storage mode;

[0007] A starting battery module, connected to the energy storage battery module, for providing emergency starting power to the starting motor in an emergency starting mode;

[0008] A microcontroller is connected to the energy storage battery module and the starting battery module, and switches the power supply mode according to the power usage strategy, wherein the power supply mode includes the energy storage mode and the emergency starting mode.

[0009] Preferably, the energy storage battery module includes an energy storage battery and an energy storage battery manager connected to the energy storage battery, and the energy storage battery manager is used to manage the charging and discharging of the energy storage battery.

[0010] Preferably, the starting battery module includes a starting battery and a starting battery manager connected to the starting battery, and the starting battery manager is used to monitor the working state of the starting battery.

[0011] Preferably, the energy storage battery module further includes:

[0012] An inverter is connected to the energy storage battery manager and the microcontroller, and is used to convert the direct current of the energy storage battery into alternating current.

[0013] Preferably, the starting battery module further includes:

[0014] An intelligent starting unit is connected to the starting battery and the microcontroller, and transmits the electric energy of the starting battery under the control of the microcontroller.

[0015] Preferably, the electricity usage strategy includes:

[0016] When the voltage requirement of the external device is greater than the preset voltage, the starter battery module provides the emergency start-up power to the starter motor; when the voltage requirement is less than the preset voltage, the energy storage battery module supplies power to the electrical load.

[0017] Preferably, it also includes a display screen, which is connected to the microcontroller and is used to display the power status of the energy storage battery module and the starting battery module.

[0018] Preferably, an interactive button is provided on the display screen for adjusting the power supply mode in real time according to user needs.

[0019] Preferably, an external clamp is further included, one end of the external clamp is connected to the starting battery module, and the other end of the external clamp is connected to the starting motor.

[0020] Preferably, the energy storage battery is a lithium battery, and the starting battery is a lead-acid battery.

[0021] The beneficial effects of the present invention are as follows: by adopting the above technical solution, combining the energy storage battery and the starting battery, and managing them through a microcontroller, the two functions of energy storage and vehicle starting are simultaneously realized in the power station, and it can work in a low temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a power station using a starting battery in the prior art;

[0023] Figure 2 It is a schematic diagram of a power station using energy storage batteries in the prior art;

[0024] Figure 3 It is a schematic diagram of a lithium battery multifunctional power supply with an emergency starting function according to the present invention.

[0025] In the attached figure: 1. Energy storage battery module; 11. Energy storage battery; 12. Energy storage battery manager; 13. Inverter; 2. Starting battery module; 21. Starting battery; 22. Starting battery manager; 23. Intelligent starting unit; 3. Microcontroller; 4. Power load; 5. Starting motor; 6. Display screen; 7. External clip. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0028] 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.

[0029] A lithium battery multifunctional power supply with emergency start function, such as Figure 3 As shown, including,

[0030] The energy storage battery module 1 is used to provide electrical energy to the electrical load 4 in the energy storage mode;

[0031] The starting battery module 2 is connected to the energy storage battery module 1 and is used to provide emergency starting power to the starting motor 5 in the emergency starting mode;

[0032] The microcontroller 3 is connected to the energy storage battery module 1 and the starting battery module 2, and switches the power supply mode according to the power usage strategy. The power supply mode includes an energy storage mode and an emergency starting mode.

[0033] Specifically, the present invention provides a lithium battery multifunctional power supply with an emergency starting function, which is managed by a microcontroller 3. When energy storage is required, an energy storage battery module 1 is used, and when starting is required, a starting battery module 2 is used. The two functions of energy storage and vehicle starting are simultaneously realized in a power station, and the power supply can work in a low temperature environment.

[0034] In a preferred embodiment, the energy storage battery module 1 includes an energy storage battery 11 and an energy storage battery manager 12 connected to the energy storage battery 11, and the energy storage battery manager 12 is used to manage the energy storage battery 11 for charging and discharging;

[0035] The starting battery module 2 includes a starting battery 21 and a starting battery manager 22 connected to the starting battery 21, and the starting battery manager 22 is used to monitor the working state of the starting battery 21;

[0036] The energy storage battery 11 is a lithium battery, and the starting battery 21 is a lead-acid battery.

[0037] Specifically, the starting battery manager 22 interacts with the energy storage battery manager 12 and the microcontroller 3 respectively. The energy storage battery manager 12 and the starting battery manager 22 manage the energy storage battery 11 and the starting battery 21 independently respectively, so that each battery can work in its most suitable state.

[0038] The energy storage battery manager 12 optimizes the service life and efficiency of the energy storage battery 11 by controlling the charge and discharge. The starting battery manager 22 can monitor the working status of the starting battery 21 in real time to ensure that the starting battery 21 has sufficient power when the car is started.

[0039] Lithium batteries and lead-acid batteries are complementary in terms of performance and usage scenarios. Lithium batteries have high energy density and fast charge and discharge speed, making them very suitable for use as energy storage batteries11.

[0040] Lead-acid batteries have the characteristics of low cost, simple structure, and good stability, and are suitable for use as starting batteries 21. The combination of the two can provide optimal power support in different working scenarios.

[0041] The energy storage battery 11 and the starting battery 21 are respectively equipped with independent battery management systems, which can optimize and protect the batteries according to their working characteristics.

[0042] The energy storage battery management system 12 extends the battery life by preventing overcharging, over-discharging, abnormal temperature, etc., and ensures the stability of the energy storage system.

[0043] The starting battery manager 22 monitors the voltage and current of the starting battery 21 to ensure that the starting battery 21 can quickly provide starting current when needed, thereby avoiding malfunctions caused by battery problems.

[0044] The system can be flexibly adjusted according to different needs. For example, the energy storage battery 11 can provide additional power support when the system is heavily loaded, while the starting battery 21 is specifically used to provide high current during starting, so as to avoid interference between the two.

[0045] In a preferred embodiment, the energy storage battery module 1 further includes:

[0046] The inverter 13 is connected to the energy storage battery manager 12 and the microcontroller 3 and is used to convert the direct current of the energy storage battery 11 into alternating current.

[0047] Specifically, the inverter 13 interacts with the microcontroller 3, and the microcontroller 3 provides stable AC power by controlling the startup of the inverter 13. When power is no longer needed, the microcontroller 3 turns off the inverter 13 to save power.

[0048] The microcontroller 3 monitors the working status of the inverter 13, including output voltage, frequency, power, etc., to ensure that the output of the inverter 13 meets the requirements.

[0049] If an abnormality occurs in the inverter 13 , the microcontroller 3 may issue an alarm or automatically stop the operation of the inverter 13 .

[0050] In a preferred embodiment, the starting battery module 2 further includes:

[0051] The intelligent starting unit 23 is connected to the starting battery 21 and the microcontroller 3 , and transmits the electric energy of the starting battery 21 under the control of the microcontroller 3 .

[0052] Specifically, the intelligent start unit 23 interacts with the microcontroller 3. In a specific emergency start scenario, the microcontroller 3 determines whether to start the battery and provide power to the outside according to the power usage strategy. The microcontroller 3 communicates with the intelligent start unit 23 to ensure that the start process is seamless.

[0053] In a preferred embodiment, it further includes a display screen 6, which is connected to the microcontroller 3 and is used to display the power status of the energy storage battery module 1 and the starting battery module 2;

[0054] The display screen 6 is provided with an interactive button for adjusting the power supply mode in real time according to user needs.

[0055] Specifically, the display screen 6 is used to display key information such as battery power, voltage, working status, etc. in real time for reference by users or maintenance personnel.

[0056] Users can understand the battery charging and discharging status in real time. Through the intuitive display, users can easily identify the remaining battery power, which helps to manage or charge the battery in time to avoid equipment or system shutdown due to low battery power.

[0057] In a preferred embodiment, it further includes an external clamp 7 , one end of the external clamp 7 is connected to the starting battery module 2 , and the other end of the external clamp 7 is connected to the starting motor 5 .

[0058] Specifically, the external clamp 7 is usually used to connect the power station to an external device (such as a car battery or other device requiring a starting power source). Emergency starting power is conveniently provided to the external device through the intelligent starting unit 23.

[0059] In a preferred embodiment, the power usage strategy includes:

[0060] When the voltage requirement of the external device is greater than the preset voltage, the starter battery module 2 provides emergency starting power to the starter motor 5. When the voltage requirement is less than the preset voltage, the energy storage battery module 1 supplies power to the power load 4. The preset voltage can be input by the user in real time through the display screen 6, or it can be set in advance inside the system.

[0061] Specifically, the electricity usage strategy also includes:

[0062] The intelligent starting unit 23 monitors the starting current demand of the external device, determines whether the device is in a normal working state or needs an emergency start state, evaluates the load requirement of the external device through a current sensor or a power monitoring module, and feeds back the corresponding signal to the microcontroller 3.

[0063] The microcontroller 3 is responsible for coordinating the power supply switching between the energy storage battery module 1 and the starting battery module 2, and decides whether to switch to the energy storage mode or the emergency starting mode according to the requirements of the external device.

[0064] The intelligent starting unit 23 is responsible for real-time monitoring of the starting current demand of the external device. It evaluates the load status of the device through a current sensor or a power monitoring module. The specific implementation steps are as follows:

[0065] Current sensor / power monitoring module: The current sensor is installed in the circuit to measure the current of the external device in real time. When the device needs to be started, the current usually surges instantly, and the smart start unit 23 can identify this instantaneous current change through the sensor.

[0066] The intelligent starting unit 23 transmits the monitored current data to the microcontroller 3. If it is detected that the current demand reaches a threshold, the intelligent starting unit 23 can determine that the external device needs to be started, and then notify the microcontroller 3 to enter the emergency starting mode.

[0067] The intelligent starting unit 23 will feed back the judgment result (for example, whether the device is in the starting state or the normal working state) to the microcontroller 3 in real time, thereby helping the microcontroller 3 decide whether to continue using the energy storage battery module 1 or switch to the starting battery module 2 to provide the urgently needed high-power electrical energy.

[0068] Specifically, the electricity usage strategy also includes:

[0069] The microcontroller 3 calculates the actual power demand of the external device according to the load type. By reading the changes in the current and voltage of the external device, the microcontroller 3 can evaluate the load changes in real time and adjust the starting battery 21 according to these data. Power scheduling is performed according to the starting characteristics of the device (such as the instantaneous current peak at startup) to ensure that sufficient starting current is provided in a short time.

[0070] The system has two power supply modes: energy storage mode: the energy storage battery module 1 provides power for conventional loads. Emergency start mode: when the load is the starter motor 5, the microcontroller 3 switches to the emergency start mode according to the start characteristics of the load type (such as a motor, a power tool, etc.), and the starter battery module 2 provides sufficient start current for the starter motor 5.

[0071] The microcontroller 3 estimates the power demand of the load by collecting the current and voltage information of the load. This can be achieved by the following steps:

[0072] Use current sensors and voltage sensors to monitor the current and voltage changes of the load in real time.

[0073] The power P can be calculated by the formula: P = U × I.

[0074] Among them, P represents power, U represents voltage, and I represents current.

[0075] The microcontroller 3 reads the current and voltage data of the load in real time, and evaluates the power change of the load through an algorithm, including the instantaneous power peak at startup, the dynamic demand of the equipment, etc.

[0076] When a load device is started, especially a device such as a motor, an instantaneous current peak value usually appears. At this time, the microcontroller 3 needs to determine whether the load is a starting device.

[0077] When the starting current appears, the microcontroller 3 determines whether to switch to the starting battery module 2 to provide current. The starting battery module 2 has a strong discharge capacity and can provide a high instantaneous current output to support the starting of the device.

[0078] When the power demand of the load is lower than or equal to the output capacity of the energy storage battery 11 , the microcontroller 3 keeps the system running in the energy storage mode, and the energy storage battery module 1 provides energy for the load.

[0079] When the load requires a larger starting current, the microcontroller 3 determines whether it is necessary to switch to the starting battery module 2 by detecting the current mutation, load type and starting characteristics. The starting battery module 2 provides sufficient current to support the device startup. After completion, the microcontroller 3 can switch back to the energy storage mode as needed.

[0080] If the power demand of the load exceeds the output capacity of the battery module, the system should reduce the output power through control strategies, or trigger an alarm / protection mechanism to avoid battery overload.

[0081] Specifically, the electricity usage strategy also includes:

[0082] The user can check the battery power status through the display screen 6, and the microcontroller 3 displays relevant information through the display screen 6, such as load power, remaining power, battery health status, etc. The user can manually adjust the startup mode according to the real-time data to enhance the emergency response capability of the system.

[0083] Under normal working conditions, the energy storage battery module 1 provides power to the load device 4, and the start-up battery module 2 is in a standby state and does not supply power to the load.

[0084] The microcontroller 3 ensures that the system is in a healthy working state by monitoring the battery status, load power, remaining power, etc.

[0085] In energy storage mode, the system monitors the battery charge through the battery management system and controls the charging and discharging process to avoid over-discharging or over-charging of the battery.

[0086] When the system detects that the power load demand exceeds the normal operating range, or the user manually triggers the emergency start mode through the display screen 6, the microcontroller 3 will switch to the emergency start mode.

[0087] In the emergency starting mode, the starting battery module 2 provides the necessary starting power to the starting motor 5. The energy storage battery module 1 remains stationary or temporarily does not participate in power supply.

[0088] The microcontroller 3 determines whether to continue to use the starting battery module 2 for power supply according to the real-time battery power and load demand.

[0089] Automatic switching: If the system is in energy storage mode and the battery power is lower than the set threshold, the microcontroller 3 can automatically switch to the emergency start mode and use the start battery module 2 to provide emergency power.

[0090] Manual switching: Users can view real-time data such as remaining power, load power, etc. through the display 6. If the system detects that the current battery power is insufficient to meet the load demand, the user can choose to manually start the emergency mode to ensure the startup of important equipment or systems.

[0091] Display screen 6 displays information such as battery power, load power, and battery health status in real time to help users determine whether to adjust the power mode.

[0092] For example, if the display screen 6 displays "The energy storage battery 11 is low on power, it is recommended to switch to the emergency start mode", the user can manually switch the power supply mode according to the prompt.

[0093] The microcontroller 3 needs to regularly obtain the battery health status data, including the number of battery charge and discharge times, capacity decay, temperature, etc. With this data, the microcontroller 3 can warn the user in advance of possible battery failures, or restrict the system from entering certain working modes when the battery health is poor.

[0094] To extend the battery life, the system can implement intelligent adjustments. For example, when the battery power is low, the system can delay switching to emergency start mode to avoid damage to battery health due to excessive discharge.

[0095] Specifically, the electricity usage strategy also includes:

[0096] The microcontroller 3 can process the load demand according to the preset load priority. When multiple external devices are connected, the system can automatically allocate power resources according to the priority of the devices to ensure that the emergency start-up requirements of key devices are met first. The load priority can be automatically adjusted by user settings, device type, or real-time power monitoring.

[0097] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery multifunctional power supply with emergency start function, characterized in that: include, An energy storage battery module is used to provide electrical energy to the electrical load in an energy storage mode; A starting battery module, connected to the energy storage battery module, for providing emergency starting power to the starting motor in an emergency starting mode; A microcontroller is connected to the energy storage battery module and the starting battery module, and switches the power supply mode according to the power usage strategy, wherein the power supply mode includes the energy storage mode and the emergency starting mode.

2. The lithium battery multifunctional power supply with emergency start function according to claim 1, characterized in that: The energy storage battery module includes an energy storage battery and an energy storage battery manager connected to the energy storage battery, and the energy storage battery manager is used to manage the charging and discharging of the energy storage battery.

3. The lithium battery multifunctional power supply with emergency start function according to claim 2, characterized in that: The starting battery module includes a starting battery and a starting battery manager connected to the starting battery, and the starting battery manager is used to monitor the working state of the starting battery.

4. The lithium battery multifunctional power supply with emergency start function according to claim 2, characterized in that: The energy storage battery module also includes: An inverter is connected to the energy storage battery manager and the microcontroller, and is used to convert the direct current of the energy storage battery into alternating current.

5. The lithium battery multifunctional power supply with emergency start function according to claim 3, characterized in that: The starting battery module also includes: An intelligent starting unit is connected to the starting battery and the microcontroller, and transmits the electric energy of the starting battery under the control of the microcontroller.

6. The lithium battery multifunctional power supply with emergency start function according to claim 1, characterized in that: The electricity utilization strategy includes: When the voltage requirement of the external device is greater than the preset voltage, the starter battery module provides the emergency start-up power to the starter motor; when the voltage requirement is less than the preset voltage, the energy storage battery module supplies power to the electrical load.

7. The lithium battery multifunctional power supply with emergency start function according to claim 1, characterized in that: It also includes a display screen, which is connected to the microcontroller and is used to display the power status of the energy storage battery module and the starting battery module.

8. The lithium battery multifunctional power supply with emergency start function according to claim 7, characterized in that: The display screen is provided with an interactive button for adjusting the power supply mode in real time according to user needs.

9. The lithium battery multifunctional power supply with emergency start function according to claim 7, characterized in that: It also includes an external clip, one end of which is connected to the starting battery module, and the other end of which is connected to the starting motor.

10. The lithium battery multifunctional power supply with emergency start function according to claim 3, characterized in that: The energy storage battery is a lithium battery, and the starting battery is a lead-acid battery.

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