CN211530794U

CN211530794U - Intelligent charger

Info

Publication number: CN211530794U
Application number: CN202020322127.6U
Authority: CN
Inventors: 刘淼; 谭欣荣; 刘时雨
Original assignee: Shenzhen Grepow Battery Co Ltd
Current assignee: Shenzhen Grepow Battery Co Ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-09-18
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses an intelligent charger, it includes: the charging device comprises a shell, wherein an input interface used for being connected with an external power supply and an output interface used for being connected with an external battery are arranged on the shell, an input detection circuit, a radio frequency card reader and a charging circuit are arranged in the shell, the charging circuit is electrically connected between the input interface and the output interface, the charging circuit is also electrically connected with a controller, the detection input end of the input detection circuit is electrically connected with the input interface, the output end of the input detection circuit is electrically connected with the controller, and the output end of the radio frequency card reader is electrically connected with the controller. The intelligent charger can read the radio frequency identification on the current lithium ion battery, automatically matches the charging control program corresponding to the current radio frequency identification to control the charging circuit to charge the lithium ion battery by adopting the currently adapted charging parameters, avoids the problems of overcharging and the like, and improves the intelligence and safety of battery charging.

Description

Intelligent charger

Technical Field

The utility model relates to a lithium ion battery field of charging especially relates to an intelligent charger.

Background

Along with the better and better living standard of people, the material requirements of the people are improved along with the better living standard, the electric model increases pleasure for the life of people, but the crowd culture level and the understanding capability of the people are different, the existing charger is integrated in multiple types, and the operation is quite complicated, so that the potential safety hazard of the model lithium battery during charging due to improper parameter setting is caused. The larger the battery is, the higher the voltage is, the more prominent the safety problem is, and the more important and enhanced the safety performance of the battery is.

Disclosure of Invention

An object of the embodiment of the utility model is to provide an intelligent charger, this intelligent charger can read the radio frequency identification on the current lithium ion battery, and the charging control program control charging circuit who matches automatically and correspond with current radio frequency identification adopts the charging parameter of current adaptation to charge to it, avoids overcharging the scheduling problem, has improved battery charging's intelligence and security.

The embodiment of the utility model provides a pair of intelligent charger, include: the device comprises a shell, an input interface for accessing an external power supply and an output interface for externally connecting a battery are arranged on the shell, an input detection circuit, a radio frequency card reader and a charging circuit are arranged in the shell,

the charging circuit is electrically connected between the input interface and the output interface and is also electrically connected with the controller,

the detection input end of the input detection circuit is electrically connected with the input interface, the output end of the input detection circuit is electrically connected with the controller, and the output end of the radio frequency card reader is electrically connected with the controller.

Optionally, a battery pack balancing interface is further disposed on the housing, and is used for accessing an electrode of each single battery of the current battery pack;

and a battery pack balancing circuit is also arranged in the shell and is electrically connected with the battery pack balancing interface and the controller respectively.

Optionally, an encoder is further disposed on the housing, and the encoder is electrically connected to the controller.

Optionally, a display screen is further disposed on the housing, and the display screen is electrically connected to the controller.

Optionally, a reversible panel is disposed on the housing, the display screen is disposed on the panel, when the panel is turned over and covered on the housing, the display screen is hidden between the panel and the housing, and when the panel is turned over to form an obtuse angle or an acute angle with the housing, the panel and the display screen stand on the housing.

Compared with the charger in the prior art, the charger in the prior art adopts the same charging strategy regardless of the specification of the currently charged lithium ion battery, adopts the same voltage and charging current to charge various lithium ion batteries, and is easy to cause the charging safety problem. However, according to the technical scheme of this embodiment, each lithium ion battery is provided with a radio frequency identifier, when charging is performed, the radio frequency card reader reads the radio frequency identifier of the lithium ion battery to be currently charged, the controller determines the charging parameter corresponding to the current radio frequency identifier according to the radio frequency identifier, and the charging circuit converts an external power supply input by the input interface into a direct current corresponding to the current charging parameter under the control of the controller, outputs the direct current to the lithium ion battery connected to the output interface, and charges the lithium ion battery.

Therefore, by applying the technical scheme, the intelligent charger can read the radio frequency identification on the current lithium ion battery, automatically matches the charging control program corresponding to the current radio frequency identification to control the charging circuit to charge the lithium ion battery by adopting the currently matched charging parameters, so that the problems of overcharging and the like are avoided, and the intelligence and safety of battery charging are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute an undue limitation on the invention.

Fig. 1 is a schematic circuit diagram of an intelligent charger circuit according to embodiment 1 of the present invention, in which an STM32F103VCT6 chip is used as a controller;

fig. 2 is a schematic diagram of a circuit principle of a charging circuit implemented by using an SC8802 chip in the intelligent charger circuit according to embodiment 1 of the present invention;

fig. 3 is a schematic diagram of a battery pack balancing circuit used in an intelligent charger circuit according to embodiment 1 of the present invention;

fig. 4 to 6 are schematic views of various viewing angles when the panel in the intelligent charger provided by embodiment 1 of the present invention is in an open state.

Detailed Description

The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided to explain the invention, but not to limit the invention.

Referring to fig. 1 to 6, the present embodiment provides an intelligent charger, which mainly includes a housing 1, an input interface 4 and an output interface 2 are disposed on the housing 1, and an input detection circuit, a charging circuit, a controller, and a radio frequency card reader are disposed in the housing 1.

Referring to fig. 1-3, an input interface 4 is connected to an external power supply, an output interface 2 is used for externally connecting a lithium ion battery to be charged, a charging circuit is connected between the input interface 4 and the output interface 2, the charging circuit is electrically connected to a controller, and the charging circuit converts the external power supply input by the input interface 4 into a charging voltage and a charging current required by the current lithium ion battery under the control of the controller to charge the lithium ion battery connected to the output interface 2. The detection input end of the input detection circuit is electrically connected with the input interface 4, the output end of the input detection circuit is electrically connected with the controller, parameters of an external power supply which is currently accessed at the input interface 4, such as voltage parameters, current parameters and the like, are input to the controller, the controller controls the charging circuit according to the voltage parameters and the current parameters of the currently accessed external power supply, the controller is also electrically connected with a radio frequency card reader, the radio frequency card reader inputs a currently read radio frequency identification to the controller, the controller determines a battery of a lithium ion battery to be charged currently according to the currently input radio frequency identification, the controller determines charging parameters of charging voltage, charging current and the like corresponding to the current lithium ion battery according to the current radio frequency identification, the charging circuit is controlled according to the current charging parameters, the external power supply which is input at the input interface 4 is converted into required charging voltage, charging current, The charging current is output to the output interface 2, and the charging of the lithium ion battery is realized.

When the technical scheme of this embodiment is applied, a lithium ion battery manufacturer sets a radio frequency identifier on a lithium ion battery, as shown in fig. 1, a radio frequency reader rfid mode radio frequency reads a radio frequency identifier on a lithium ion battery to be charged currently and inputs the radio frequency identifier to a controller, and a charging control program corresponding to each radio frequency identifier and each radio frequency identifier is prestored in the controller, so that charging parameters (such as, but not limited to, charging voltage and charging current) corresponding to the identifier can be determined during charging, and different charging control programs are adopted. The preset charging control programs may be, but are not limited to, any of various charging control programs in the prior art.

Compared with the charger in the prior art, the charger in the prior art adopts the same charging strategy regardless of the specification of the currently charged lithium ion battery, adopts the same voltage and charging current to charge various lithium ion batteries, and is easy to cause the charging safety problem. However, according to the technical scheme of this embodiment, each lithium ion battery is provided with a radio frequency identifier, when charging is performed, the radio frequency card reader reads the radio frequency identifier of the lithium ion battery to be charged currently, the controller determines the charging parameter corresponding to the current radio frequency identifier according to the radio frequency identifier, and the charging circuit converts an external power supply input by the input interface 4 into a direct current corresponding to the current charging parameter under the control of the controller, outputs the direct current to the lithium ion battery connected to the output interface 2, and charges the lithium ion battery. Therefore, by applying the technical scheme, the intelligent charger can read the radio frequency identification on the current lithium ion battery, automatically matches the charging control program corresponding to the current radio frequency identification to control the charging circuit to charge the lithium ion battery by adopting the currently matched charging parameters, so that the problems of overcharging and the like are avoided, and the intelligence and safety of battery charging are improved.

As an illustration of the present embodiment, the present embodiment may, but is not limited to, adopt the STM32F103VCT6 as a main control chip of the controller, and the peripheral circuit of the STM32F103VCT6 chip may, but is not limited to, refer to fig. 1.

As a schematic illustration of the present embodiment, referring to fig. 1, the controller of the present embodiment is further electrically connected to the output interface 2 through an output detection circuit to collect a voltage of the lithium ion battery connected to the output interface 2, and a specific output detection circuit is shown in fig. 1, where BAT + BAT "is a positive electrode and a negative electrode of the lithium ion battery, and the controller may further determine whether the current lithium ion battery is reversely connected according to the collected voltage of BAT + BAT" to cut off the output to the output interface 2 when the lithium ion battery is reversely connected, so as to avoid a short circuit of the lithium ion battery, and the detailed principle is shown in fig. 2. In addition, referring to fig. 2, the controller of this embodiment is further electrically connected to the INPUT interface 4INPUT + to collect the voltage of the INPUT power INPUT + terminal connected to the INPUT interface 4 terminal, so that the controller determines that the current INPUT power is a dc power or an ac power according to the INPUT power and collects the voltage and the current of the current INPUT power, and the controller controls the charging circuit according to the INPUT power parameters.

Referring to fig. 2, as an illustration of the present embodiment, in the present embodiment, but not limited to, an SC8802 chip is used as a charging control chip of a charging circuit, the charging control chip is electrically connected to a controller chip, the charging control chip in the charging circuit operates according to charging parameters input by the controller chip, and a charging circuit implemented by using the SC8802 charging control chip may be, but not limited to, as shown in fig. 2, and further, the operating principle of the SC8802 chip and the principle of peripheral circuits are referred to the prior art, and are not described herein again.

Preferably, the charging circuit of this embodiment is implemented by using a charging control chip (for example, SC8802 chip) compatible with a dc-dc conversion support and an ac-dc conversion support, so that the input interface 4 of the intelligent charger of this embodiment can support both dc input and ac input, thereby improving the application convenience of the intelligent charger and facilitating the use of the user.

As an illustration of the present embodiment, referring to fig. 1 and 3, a battery pack balancing interface 3 is further disposed on the housing 1 of the present embodiment, the battery pack balancing interface 3 is connected to the positive electrode and the negative electrode of each battery cell of the battery pack, and accordingly, a battery pack balancing circuit is further disposed in the housing 1, the battery pack balancing circuit is electrically connected to the battery pack balancing interface 3 and the controller respectively (see fig. 1 and 3), a battery pack balancing control program is further preset in the controller, and the controller controls the battery pack balancing circuit according to the preset battery pack balancing control program to perform balancing control on each battery cell in the battery pack connected to the battery pack balancing interface 3, so as to improve the consistency of the current battery pack and improve the service life of the battery pack. Referring to fig. 1 and 3, the battery balance control program may adopt any one of the battery balance control technologies in the prior art.

As an illustration of the present embodiment, an encoder 7 is further disposed on the housing 1 of the present embodiment, as shown in fig. 1, the encoder 7 is electrically connected to the controller through an interface J5, where the encoder 7 may be, but is not limited to, a roller encoder 7, for example, if a radio frequency identifier is not disposed on a lithium ion battery that needs to be charged currently, or the controller cannot identify the radio frequency identifier on the current lithium ion battery currently, a user may set a charging parameter through the encoder 7, or set the charging parameter to a general charging state through the encoder 7, and the controller controls a charging control chip in the charging circuit according to the set charging parameter or according to a preset general charging control program to charge the current lithium ion battery, so as to improve the charging flexibility and the application versatility of the intelligent charger of the present embodiment.

As an illustration of the present embodiment, referring to fig. 1, a display screen 6 is further disposed on the housing 1 of the present embodiment, and the display screen 6 is electrically connected to the controller to display various charging parameters currently being charged on the display screen 6, so as to be convenient for a user to use, referring to fig. 1, the display screen 6 is electrically connected to a terminal of the controller through a line socket of the LCD 1.

Referring to fig. 4 and 5, for example, a panel 5 that can be opened, closed and turned over may be disposed on the housing 1, the display screen 6 is disposed on the inner side of the panel 5, when the panel 5 is turned over to cover the housing 1, the display is hidden between the panel 5 and the housing 1, and when the display device is used, the panel 5 may be turned over to form a certain included angle with the housing 1 and stand on the housing 1, so that the display screen 6 on the panel 5 may be conveniently checked by a user.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. An intelligent charger, comprising: the device comprises a shell, an input interface for accessing an external power supply and an output interface for externally connecting a battery are arranged on the shell, an input detection circuit, a radio frequency card reader and a charging circuit are arranged in the shell,

2. The intelligent charger according to claim 1,

the shell is also provided with a battery pack balance interface for accessing the electrode of each single battery of the current battery pack;

3. The intelligent charger according to claim 1,

the shell is also provided with an encoder which is electrically connected with the controller.

4. The intelligent charger according to claim 1,

the shell is further provided with a display screen, and the display screen is electrically connected with the controller.

5. The intelligent charger according to claim 4,

a reversible panel is arranged on the shell body,

the display screen sets up on the panel, works as the panel upset is covered when on the casing, the display screen hide in the panel with between the casing, works as the panel upset to with when the casing becomes an obtuse angle or acute angle, panel and display screen stand on the casing.