TW201521324A - Programmable charging system and method thereof - Google Patents

Abstract

A programmable charging system and method thereof is disclosed. By transmitting detecting conditions from a control end to a battery management end so as to programming a controller within the battery management end, and driving sensors to detect electricity parameters of battery according to the detecting conditions, the controller will compare the detecting conditions and the electricity parameters to produce a comparing results when programming process is complete, and controlling switch elements for charging and equalizing. The mechanism is help to improve the efficiency of charge equalization.

Description

Programmable charging system and charging method thereof

The present invention relates to a charging system and a method thereof, and more particularly to a programmable charging system and a charging method thereof that allow a control terminal to specify a detection condition to detect a battery state as a basis for charging balance.

In recent years, with the popularization and vigorous development of secondary batteries (also known as rechargeable batteries), various technologies applied to secondary batteries have sprung up, and among them, charging balance technology has attracted the most attention.

In general, the charge balance can be divided into passive balance and active balance. The passive balance divides the excess current to the bypass resistor, so that the bypass resistor can dissipate excess current and avoid overcharging the battery unit. The balance does not dissipate excess current, but instead delivers it to a battery unit that is not fully charged. In other words, active balancing provides compensation for residual power imbalance between cells. Since active balancing does not allow excess current to convert electrical energy into thermal energy through electrical resistance, there is no need to add additional thermal management techniques, and the individual cells in the battery pack do not have different degrees of aging due to different temperature gradients. The same, so active balance has become the focus of technology development of various manufacturers.

In view of this, some manufacturers have proposed to adjust the charging voltage or charging current of the battery unit by estimating the state of charge (SOC) of the battery unit, thereby solving the problem of inefficient charging balance, for example, the US patent. "Battery system and electric motor vehicle using the battery system with charge equalizing features" disclosed in the publication "US 5,905,360". However, in this way, it must be established to accurately estimate the residual power of each battery unit, otherwise the efficiency of the charge balance will be reduced. However, the above method does not provide the user to set the detection condition to detect the electrical parameters of the battery unit. As a basis for estimation, it is easy to produce an inability to accurately estimate the residual power using inappropriate detection conditions. In this case, the problem of inefficient charging balance is still not effectively solved.

In summary, it can be seen that the prior art has always had a problem of inefficient charging balance, so it is necessary to propose an improved technical means to solve this problem.

In view of the problems of the prior art, the present invention discloses a programmable charging system and a charging method thereof.

The programmable charging system disclosed in the present invention comprises: a control end and a battery management end. The control terminal is configured to transmit detection conditions, and each detection condition includes at least a preset threshold. Then, in the battery management part, the battery module, the processing module, the detection module and the control module are included. The battery module has electrically connected battery cells, each of which is electrically connected to the corresponding switching component; the processing module is configured to receive the detection condition transmitted by the control terminal, and according to the received detection condition The controller performs programmatic processing; the detection module is configured to drive the corresponding sensor according to the detection condition, so that the sensor detects the electrical parameter of each battery unit; the control module includes the controller and the decoding driver when the control After the program is programmed, the controller compares the electrical parameters with the preset thresholds of the detection conditions, and drives the decoding driver to control the switching elements to adjust the charging voltage or charging current of each of the battery cells according to the comparison result. The battery unit is caused to form a charge balance state.

As for the programmable charging method of the present invention, the steps include: transmitting a detection condition to the battery management terminal at the control end, each detection condition includes at least a preset threshold; and the battery management terminal receives the detection transmitted by the control terminal. Condition, and the controller is programmed according to the received detection condition; the battery management terminal drives the corresponding sensor according to the detection condition, so that the sensor detects a plurality of electrically connected battery cells in the battery management terminal After the battery management terminal finishes the stylization process, the electrical parameters are compared with the preset thresholds of the detection conditions, and the decoding driver is driven according to the comparison result to control the switching components electrically connected to the battery cells. To adjust the charging voltage or charging current of each battery unit, so that the battery unit forms a charging balance state.

The system and method disclosed in the present invention are as above, and the difference from the prior art is that the present invention transmits a detection condition to the battery management terminal through the control terminal, so as to program the controller in the battery management terminal, and according to the detection The condition-driven sensor detects the electrical parameters of the battery unit, and after completing the stylization process, the controller compares the detection conditions and electrical parameters. To generate a comparison result, and control the switching element to charge balance the battery unit according to the comparison result.

Through the above technical means, the present invention can achieve the technical effect of improving the efficiency of charge balance.

10‧‧‧Control end

20‧‧‧Battery management terminal

210‧‧‧ battery module

220‧‧‧Processing module

230‧‧‧Detection module

240‧‧‧Control Module

300‧‧‧Touch display components

311~313‧‧‧Input block

321‧‧‧Select button

322‧‧‧Ignore buttons

411‧‧‧ Controller

412‧‧‧Decoding driver

421‧‧‧ voltage sensor

422‧‧‧ Current Sensor

423‧‧‧temperature sensor

424‧‧‧Internal resistance sensor

431‧‧‧Switching elements

432‧‧‧ battery unit

Step 210‧‧‧ transmits at least one detection condition to a battery management terminal on a control terminal, and each detection condition includes at least a preset threshold

Step 220‧‧‧ The battery management terminal receives the detection condition transmitted by the control terminal, and performs programmatic processing on a controller according to the received detection condition

Step 230‧‧ The battery management terminal drives the corresponding sensor according to the detection condition, so that the sensor detects at least one electrical parameter of the plurality of electrically connected battery cells in the battery management terminal

Step 240‧‧‧ After the battery management terminal completes the stylization process, the electrical parameter is compared with a preset threshold of the detection condition, and a decoding driver is driven according to the comparison result to control the electrical properties of each battery unit The connected switching element adjusts a charging voltage or a charging current of each battery unit to form a charging balance state of the battery unit

Figure 1 is a block diagram of a system of a programmable charging system of the present invention.

2 is a flow chart of a method of a programmable charging method of the present invention.

3A and 3B are schematic diagrams of setting detection conditions on the control terminal by applying the present invention.

Figure 4 is a circuit diagram of the battery management terminal of the present invention.

The embodiments of the present invention will be described in detail below with reference to the drawings and embodiments, so that the application of the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Before describing the programmable charging system and the charging method thereof disclosed in the present invention, the nouns defined by the present invention are described. The control terminal of the present invention is a computer device, such as a car computer, a personal computer, or an individual. In the actual implementation, the control terminal is a device for providing a user to set a detection condition and a preset threshold included therein, and the detection condition is to detect the voltage of the battery, a condition of at least one of a combination of current, temperature, polarity, and internal resistance, and the preset threshold may be a user-specified standard range, a high-standard range, and a low-standard range or at least one of them. In other words, if the detection condition is “battery temperature”, the corresponding preset threshold can be set to “0 degrees to 60 degrees” as the standard range, “more than 60 degrees” is the high standard range, and “less than 0 degrees” is low. The scope of the standard will be described in detail later in conjunction with the embodiment. In addition, the battery management terminal is a device for managing a plurality of electrically connected battery cells, and has a programmable controller, an electrical parameter for detecting the battery unit, and a function of charging and balancing the battery unit. .

The following is a description of the programmable charging system and the charging method thereof according to the drawings. Please refer to FIG. 1 and FIG. 1 is a programmable charging system of the present invention. The system block diagram, the system includes: a control terminal 10 and a battery management terminal 20. The control terminal 10 is configured to transmit the detection condition to the battery management terminal 20, and each detection condition includes at least a preset threshold. Since the detection condition and the preset threshold have been described in the previously defined noun, I will not repeat them here. In particular, in actual implementation, the manner in which the control terminal 10 transmits the detection condition to the battery management terminal 20 can be transmitted by wire (for example, Ethernet, RS-232, etc.) or Wireless transmission (eg Wi-Fi, GPRS, etc.) is implemented.

The battery management terminal 20 includes: a battery module 210, a processing module 220, The detection module 230 and the control module 240. The battery module 210 has a plurality of electrically connected battery cells, wherein each of the battery cells is electrically connected to a corresponding switching component. In practical implementation, the electrical connection between the battery cells is connected in series or in parallel, and the switching component can use a Metal-Oxide-Semiconductor FET (MOSFET) as an open circuit or an open circuit. Components.

The processing module 220 is configured to receive the detection condition transmitted by the control terminal 10, and The controller is programmed according to the received detection conditions. The controller is an integrated circuit (also referred to as a programmable logic element) that can be programmed to provide different logic functions, and allows writing/erasing through electrical signals (eg, Electrically Erasable Programmable Read Only, EEPROM), or an element that erases Erasable Programmable Read Only (EPROM), is a technique for writing and erasing, and therefore will not be repeated here.

The detection module 230 is configured to drive according to the detection conditions received by the processing module 220. Corresponding sensors, such as voltage sensors, current sensors, temperature sensors and internal resistance sensors, etc., are used to detect electrical parameters of the battery unit, such as: Voltage, current, temperature, internal resistance, etc.

The control module 240 includes the controller and the decoding driver, when the controller completes the process After the processing, the controller compares the electrical parameters with the preset thresholds of the detection conditions, and drives the decoding driver according to the comparison result to control the switching elements to adjust the charging voltage or charging current of each battery unit. So that the battery unit forms a charge balance state.

Next, please refer to "Figure 2", "Figure 2" is a programmable charge of the present invention. A method flow diagram of an electrical method, the steps comprising: transmitting a detection condition to the battery management at the control terminal 10 The terminal 20, each detection condition includes at least a preset threshold (step 210); the battery management terminal 20 receives the detection condition transmitted by the control terminal 10, and performs programmatic processing on the controller according to the received detection condition. (Step 220); the battery management terminal 20 drives the corresponding sensor according to the detection condition, so that the sensor detects the electrical parameters of the plurality of electrically connected battery cells in the battery management terminal 20 (step 230); when the battery management After the terminal 20 completes the stylization process, the electrical parameters are compared with the preset thresholds of the detection conditions, and the decoding driver is driven according to the comparison result to control the switching elements electrically connected to the battery cells, so as to adjust each battery. The charging voltage or charging current of the unit causes the battery unit to form a charge balancing state (step 240). Through the above steps, the detection condition can be transmitted to the battery management terminal 20 through the control terminal 10 to program the controller in the battery management terminal 20, and the sensor is driven to detect the electrical condition of the battery unit according to the detection condition. The parameters, and after the stylization process is completed, the controller compares the detection conditions and the electrical parameters to generate a comparison result, and controls the switching elements to charge balance the battery cells according to the comparison result.

The following is carried out in the manner of the embodiments in conjunction with "3A" to "4". Please refer to "3A" and "3B", "3A" and "3B" for the purpose of setting the detection conditions on the control side using the present invention. When the user wants to adjust the detection condition for estimating the residual battery power to improve the efficiency of the charging balance, the user can select the setting detection condition through the control terminal 10, such as the touch mode in the touch mode as shown in FIG. 3A. Click "Sense Internal Resistance" on display element 300. Thereafter, the touch display component 300 will display a preset threshold value of the "sensing internal resistance" as a detection condition as shown in "FIG. 3B", such as a standard range, a high standard range, and a low standard range. At this time, the user can click the input blocks (311, 312, and 313) corresponding to the preset thresholds for setting, for example, the input input block 311 sets the internal resistance value of the standard range to be 20 ohms. Up to 30 ohms, the input input block 312 sets the internal resistance value of the high standard range to "greater than 30 ohms", and the input input block 313 sets the internal resistance value of the low standard range to "less than 20 ohms", and then, After the setting is completed, the selection button 321 is selected to determine the use of the detection condition. Otherwise, if the user does not want to use the detection condition, the ignore button 322 can be selected to cancel the selection of the detection condition.

As stated above, when the user sets the detection conditions to be used one by one (eg: "feeling" After measuring the internal resistance and the "sensing voltage", the control terminal 10 transmits the detection condition set by the user and the preset threshold included therein to the battery management terminal through wired transmission or wireless transmission. 20. Since the manner of wired transmission or wireless transmission is a conventional technique, no further details are provided herein.

As shown in "Figure 4", "Figure 4" is a schematic diagram of the circuit of the battery management terminal of the present invention. As mentioned above, the control terminal 10 transmits the detection condition selected by the user and the setting and its preset threshold to the battery management terminal 20. At this time, the processing module 220 of the battery management terminal 20 receives the detection condition transmitted by the control terminal 10, and performs programmatic processing on the controller 411 in the control module 240 according to the received detection condition. At the same time, the detection module 230 also drives the corresponding sensor according to the detection condition received by the processing module 220. For example, if the processing module 220 receives the detection condition as “sensing internal resistance” And the "sensing voltage", the detecting module 230 will drive the voltage sensor 421 and the internal resistance sensor 424 to detect the electrical parameters of each of the battery cells 432. Similarly, if the detection condition received by the processing module 220 is “sensing current” or “sensing temperature”, the detecting module 230 will drive the current sensor 422 or the temperature sensor 423. Since each sensor and the manner of driving each sensor are conventional technologies, no further details are provided herein.

Next, after the controller 411 completes the stylization process, the controller 411 reads the electrical parameters detected by the detection module 230, and compares it with the preset threshold of the detection condition, and according to the ratio. The result driving decoder driver 412 controls the switching element 431 to adjust the charging voltage or charging current of each battery unit 432 to cause the battery unit 432 to form a charging balance state. For example, the electrical parameters detected by the detecting module 230 are assumed. For the temperature of the battery, and the temperature of each battery unit 432 is “10 degrees”, “61 degrees” and “2 degrees below zero”, the controller 411 presets these temperatures and the detection condition “battery temperature”. The threshold is compared. If the detection condition is preset, the corresponding preset threshold is “0 degrees to 60 degrees” as the standard range, “more than 60 degrees” is the high standard range, and “less than 0 degrees” is the low standard range. The controller 411 can control the switching element 431 to charge the battery unit 432 of the low-standard range first, then charge the battery unit 432 of the standard range, and then charge the battery unit 432 of the high-standard range at the latest. In addition, if the electrical parameter detected by the detection module 230 is at least one of voltage, current, and internal resistance, the controller 411 can further estimate the battery residual capacity according to the electrical parameters, and use the battery as a percentage of the battery residual capacity. The charging sequence of the unit 432 or the basis for stopping the charging may be performed by using a specific gravity method, an open circuit voltage method, a load voltage method, an ampere-hour method, an internal resistance method, and the like. Since the method for estimating the residual power of the battery is a conventional technique, it will not be repeated here.

In summary, it can be seen that the difference between the present invention and the prior art is that the detection condition is transmitted to the battery management terminal through the control terminal, so that the controller in the battery management terminal is programmed, and the sensing is driven according to the detection condition. The device detects the electrical parameters of the battery unit, and after completing the stylization process, the controller compares the detection condition and the electrical parameter to generate a comparison result, and controls the switching element to charge balance the battery unit according to the comparison result, Therefore, a technical means can solve the problems existing in the prior art, thereby achieving the technical effect of improving the efficiency of the charge balance.

While the present invention has been described above in the foregoing embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of patent protection shall be subject to the definition of the scope of the patent application attached to this specification.

10‧‧‧Control end

20‧‧‧Battery management terminal

210‧‧‧ battery module

220‧‧‧Processing module

230‧‧‧Detection module

240‧‧‧Control Module

Claims (10)

A programmable charging system, the system comprising: a control terminal for transmitting at least one detection condition, each detection condition comprising at least a preset threshold; and a battery management terminal, the battery management terminal comprising: a battery module, the battery module has a plurality of electrically connected battery cells, wherein each battery cell is electrically connected to a corresponding one of the switching components; and a processing module is configured to receive the detection transmitted by the control terminal a condition, and a program is processed according to the received detection condition; a detection module is configured to drive the corresponding sensor according to the detection condition, so that the sensor detects At least one electrical parameter of each battery unit; and a control module comprising the controller and a decoding driver, the controller, when the controller completes the stylization process, the controller Aligning the preset thresholds of the detection conditions, and driving the decoding driver according to the comparison result to control the switching element to adjust the charging voltage or the charging current of each battery unit, so that the battery unit is shaped Charge balance. The programmable charging system of claim 1, wherein the control terminal transmits the detection condition to a processing module of the battery management terminal by way of wired transmission or wireless transmission. The programmable charging system of claim 1, wherein the detecting condition comprises at least one of a combination of a voltage, a current, a temperature, a polarity, and an internal resistance of the battery. The programmable charging system of claim 1, wherein the preset threshold comprises at least one of a standard range, a high range, and a low range. The programmable charging system of claim 1, wherein the sensor comprises a voltage sensor, a current sensor, a temperature sensor, and an internal resistance sensor. A programmable charging method includes the steps of: transmitting, by a control terminal, at least one detection condition to a battery management terminal, each detection condition including at least a preset threshold; and the battery management terminal receiving the control terminal Transmitting a detection condition, and programstizing a controller according to the received detection condition; the battery management terminal drives the corresponding sensor according to the detection condition, so that the sensor detects At least one electrical parameter of the plurality of electrically connected battery cells in the battery management terminal; and after the battery management terminal completes the stylization process, comparing the electrical parameter with a preset threshold of the detection condition, and according to The comparison result drives a decoding driver to control the switching elements electrically connected to the respective battery cells to adjust the charging voltage or charging current of each of the battery cells to cause the battery cells to form a charge balancing state. The programmable charging method of claim 6, wherein the control terminal transmits the cable in a wired or wireless manner. The programmable charging method of claim 6, wherein the detecting condition comprises at least one of a combination of a voltage, a current, a temperature, a polarity, and an internal resistance of the battery. The programmable charging method of claim 6, wherein the preset threshold comprises at least one of a standard range, a high range, and a low range. The programmable charging method of claim 6, wherein the sensor comprises a voltage sensor, a current sensor, a temperature sensor, and an internal resistance sensor.