Adjustable and monitorable lithium battery rapid charging device

Abstract

The utility model discloses an adjustable and monitorable lithium battery rapid charging device, which comprises a shell, a main control current board is arranged in the shell, and the main control current board is electrically connected with an MCU (Microprogrammed Control Unit) main control module, a charging module, a current and voltage detection module, an intelligent protection module, a current and voltage adjusting module and a fan rotating speed adjusting module respectively. The current and voltage adjusting module is electrically connected with a current potentiometer and a voltage potentiometer, the fan rotating speed adjusting module is connected with a fan and a fan potentiometer, the current and voltage adjusting module is electrically connected with an LED display module, and the charging module is electrically connected with the charging lithium battery pack through a power line. According to the utility model, parameters such as battery temperature, current and voltage, residual electric quantity and the like in a charging process can be monitored, stopping and starting of charging and discharging of the battery can be realized, and the operation is safe and convenient; the magnitude of voltage and current adapting to the battery capacity and the rotation degree of the fan can be automatically or manually adjusted; and over-current and over-voltage protection of the rechargeable battery can be realized.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery charging, in particular to an adjustable and monitorable lithium battery fast charging device. Background Art

[0002] In recent years, the new energy industry has developed by leaps and bounds. Lithium-ion power batteries, as the main energy storage components of current new energy vehicles, are one of the core components of electric transportation vehicles. The quality of their charging and discharging performance is directly related to the performance of the entire vehicle. Therefore, it is of great significance to develop lithium-ion power battery charging devices with excellent performance.

[0003] At present, ordinary lithium battery charging devices have the following problems: 1. The charging device cannot be adjusted to high current charging, and the charging speed is slow; some can achieve fast charging but cannot dynamically adjust the charging current, and the charging speed cannot be changed; 2. It is impossible to monitor the charging status of lithium-ion batteries during charging, such as: battery temperature, real-time charging current and voltage, battery remaining power and other parameters; 3. The charging and discharging control method lacks intelligent remote control operation. In summary, ordinary lithium-ion charging equipment cannot achieve real-time fast and adjustable charging, and lacks some humanized monitoring and operation. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable and monitorable lithium battery fast charging device which solves the above-mentioned problem.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An adjustable and monitorable lithium battery fast charging device comprises a shell, wherein a main control current board is arranged inside the shell, wherein the main control current board is electrically connected to an MCU main control module, a charging module, a current and voltage detection module, an intelligent protection module, a current and voltage regulation module and a fan speed regulation module, respectively, wherein the current and voltage regulation modules are electrically connected to a current potentiometer and a voltage potentiometer, respectively, wherein the fan speed regulation module is electrically connected to a fan and a fan potentiometer, respectively, wherein a fan hole is opened on the shell, wherein the fan is arranged at the fan hole, wherein the current and voltage detection module is electrically connected to an LED display module for displaying current and voltage, wherein the LED display module is arranged outside the shell, and wherein the charging module is electrically connected to a rechargeable lithium battery pack through a power line.

[0007] Preferably, the intelligent protection module includes a battery power detection module, a temperature sensor module, and an overcurrent and overvoltage protection module, and the overcurrent and overvoltage protection module is electrically connected to the current and voltage flow detection module.

[0008] Preferably, the main control current board is connected to a Bluetooth module, the current and voltage detection module, the battery power detection module and the temperature sensor module are all connected to the Bluetooth module, and the Bluetooth module is connected to a mobile phone.

[0009] Preferably, the charging module includes a transformer module, a rectifier bridge module, a filter module, and a Buck-Boost module.

[0010] Preferably, the current and voltage detection module includes a voltage detection module, a current detection module and a feedback module.

[0011] Preferably, the power cord is provided with an aviation plug.

[0012] The beneficial effects of the utility model are as follows: the utility model can automatically or manually adjust the voltage size, the real-time charging current size, and the real-time cooling fan speed to adapt to the battery capacity; the use of aviation head male and female connectors can effectively adapt to the large current regulation during charging; the use of LED display module can display the charging current size and battery voltage size in real time; the use of intelligent protection module can not only realize real-time monitoring of charging parameters, but also realize over-current and over-voltage protection of rechargeable batteries; the battery temperature, current and voltage size, remaining power and other parameters during the charging process can be monitored through a mobile phone, and the battery charging and discharging can be stopped and started through the mobile phone, and the operation is safe and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a rear view structural schematic diagram of the housing of the utility model;

[0015] Figure 3 It is a schematic cross-sectional structural diagram of the housing of the utility model;

[0016] Wherein: housing 1, main control current board 2, MCU main control module 3, charging module 4, current and voltage detection module 5, intelligent protection module 6, current and voltage regulation module 7, fan speed regulation module 8, Bluetooth module 10, current potentiometer 11, voltage potentiometer 12, fan 13, fan potentiometer 14, fan hole 15, LED display module 16, power cord 17, rechargeable lithium battery pack 18, aviation plug 19, power connector 20. DETAILED DESCRIPTION

[0017] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0018] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] like Figures 1 to 3 As shown, the utility model provides an adjustable and monitorable lithium battery fast charging device, which includes a shell 1, a main control current board 2 is arranged inside the shell 1, and the main control current board 2 is electrically connected to an MCU main control module 3, a charging module 4, a current and voltage detection module 5, an intelligent protection module 6, a current and voltage adjustment module 7, a fan speed adjustment module 8, and a Bluetooth module 10.

[0020] Among them, the MCU main control module 3 is used to control the work of other modules. The current and voltage regulation module 7 is used to adjust the charging current and voltage of the pulse output by adjusting the duty cycle of the PMW, so as to achieve a larger range of adjustable charging current and charging voltage. The current and voltage regulation module 7 includes a current regulation module and a voltage regulation module, and the current regulation module and the voltage regulation module are respectively electrically connected to a current potentiometer 11 and a voltage potentiometer 12, and the voltage size and real-time current size adapted to the battery capacity are manually adjusted by rotating the potentiometer. The adjustable charging voltage range of the utility model is 0-100V, and the adjustable current range is 0-30A. The fan speed regulation module 8 is respectively connected to a fan 13 and a fan potentiometer 14, and the fan 13 is used to dissipate heat inside the housing 1. The speed of the fan 13 can be adjusted automatically according to the heat dissipation temperature, or the speed of the fan 13 can be adjusted by manually rotating the fan potentiometer 14, thereby improving the charging efficiency. A fan hole 15 is provided on the housing 1, and the fan 13 is arranged at the fan hole 15.

[0021] The current and voltage detection module 5 includes a voltage detection module, a current detection module and a feedback module, which can feed back the detected real-time voltage and current values ​​to the MCU main control module 3, and then the main control module 3 determines the charging stage (constant current control stage or pulse control stage) according to the battery voltage threshold. The current and voltage detection module 5 is electrically connected to an LED display module 16 and a Bluetooth module 10 for displaying current and voltage, and the Bluetooth module 10 is wirelessly connected to the mobile phone. The LED display module 16 is an LED display tube arranged on the outer surface of the housing 1, and the voltage and current magnitude detected in real time are prompted by the LED display module 16 and the mobile phone.

[0022] The charging module 4 is electrically connected to the rechargeable lithium battery pack 18 through a power cord 17, and an aviation plug 19 is provided on the power cord 17, which can effectively adapt to the large current regulation during charging. The charging module 4 includes a transformer module, a rectifier bridge module, a filter module, and a Buck-Boost module. Among them, the rectifier bridge module adopts full-bridge rectification, which can effectively reduce the heating of the rectifier bridge. Both the filter module and the Buck-Boost module adopt high-power MOS tubes and large capacitors with high withstand voltage values, which can realize controlled rectification, and can improve the power factor, thereby improving the charging efficiency.

[0023] The intelligent protection module 6 includes a battery power detection module, a temperature sensor module, and an overcurrent and overvoltage protection module. The battery power detection module and the temperature sensor module are respectively connected to the Bluetooth module 10, and under the control of the main control module 3, calculate the charging and discharging capacity of the rechargeable lithium battery pack 18, and detect and obtain the temperature of the battery in real time. The overcurrent and overvoltage protection module forms a loop with the main control module 3, the rechargeable lithium battery pack 18, and the current and voltage detection module 5, and under the control of the main control module 3, realizes overcurrent protection and overvoltage protection for the rechargeable lithium battery pack 18.

[0024] The Bluetooth module 10 can establish wireless communication with the mobile phone app. Under the control of the main control module, the mobile phone app can monitor parameters such as battery temperature, current and voltage, and remaining power during the charging process. It can also control the stop and start of battery charging and discharging online in real time.

[0025] The charging principle of the utility model is as follows: after power-on, the MCU main control module 3 determines whether the charging module 4 enters the constant current control stage or the pulse control stage according to the battery voltage threshold fed back by the current and voltage detection module 5; when the battery voltage threshold reaches or exceeds the threshold voltage threshold, the charging module 4 directly enters the pulse control stage, otherwise, the charging module 4 enters the constant current charging stage, and the charging enters the constant current area at this time; in the constant current area, the MCU main control module 3 detects the battery voltage in real time, and controls the charging module 4 to perform constant current charging with a constant current according to the real-time current monitored. When the battery voltage reaches the threshold voltage threshold, the constant current charging stage ends and the pulse charging mode starts. After the pulse charging mode starts, the charging enters the pulse area. When the battery voltage is less than the cut-off voltage threshold, charging starts with a constant current. When the battery voltage is greater than or equal to the cut-off voltage threshold, charging stops, and this is repeated.

[0026] When the utility model is used, the power is first turned on, and the voltage potentiometer 12 is used to manually adjust the full-charge voltage of the rechargeable lithium battery pack 18 according to the voltage display of the LED display module 16, and then the aviation plug 19 is inserted into the rechargeable lithium battery pack 18, and the current potentiometer 11 is used to manually adjust the appropriate current value according to the current display of the LED display module 16, and then charging begins.

[0027] During the charging process, the fan potentiometer 14 can be used to manually adjust the speed of the fan 13 to better dissipate heat from the components inside the housing and increase charging efficiency. After the voltage of the LED display module 16 is displayed as the full-charge voltage, unplug the aviation connector 19 first, and then wait until the current of the LED display module 16 is displayed as 0, unplug the power connector 20 connecting the charging device to the power supply, and charging is completed.

[0028] During the charging process, you can use the mobile phone APP to monitor parameters such as battery temperature, battery voltage, current remaining battery power, remaining charging time, etc. in real time. You can also use the mobile phone APP to control the stop and start of battery charging and discharging.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable and monitorable lithium battery fast charging device, comprising a housing, characterized in that: A main control current board is arranged inside the shell, and the main control current board is electrically connected to the MCU main control module, the charging module, the current and voltage detection module, the intelligent protection module, the current and voltage regulation module and the fan speed regulation module, respectively, the current and voltage regulation modules are electrically connected to the current potentiometer and the voltage potentiometer, respectively, the fan speed regulation module is connected to the fan and the fan potentiometer, a fan hole is opened on the shell, the fan is arranged at the fan hole, the current and voltage detection module is electrically connected to an LED display module for displaying current and voltage, the LED display module is arranged outside the shell, and the charging module is electrically connected to the rechargeable lithium battery pack through a power cord.

2. The adjustable and monitorable lithium battery fast charging device according to claim 1, comprising a housing, characterized in that: The intelligent protection module includes a battery power detection module, a temperature sensor module, and an overcurrent and overvoltage protection module. The overcurrent and overvoltage protection module is electrically connected to the current and voltage flow detection module.

3. The adjustable and monitorable lithium battery fast charging device according to claim 2, characterized in that: The main control current board is connected to a Bluetooth module, the current and voltage detection module, the battery power detection module and the temperature sensor module are all connected to the Bluetooth module, and the Bluetooth module is connected to a mobile phone.

4. The adjustable and monitorable lithium battery fast charging device according to claim 3 is characterized in that: The charging module includes a transformer module, a rectifier bridge module, a filter module, and a Buck-Boost module.

5. The adjustable and monitorable lithium battery fast charging device according to claim 4, characterized in that: The current and voltage detection module includes a voltage detection module, a current detection module and a feedback module.

6. The adjustable and monitorable lithium battery fast charging device according to claim 1, characterized in that: The power line is provided with an aviation plug.

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