Charging and discharging protection integrated charging and discharging control module for multi-path control

Abstract

The utility model discloses a charge-discharge protection integrated charge-discharge control module for multipath control, which relates to the field of semiconductors and comprises a multipath control module, a charge control module, a discharge control module, a protection function module, a power output module and a control and communication module. The output end of the multi-path control module is connected with the input end of the charging control module and the input end of the protection function module, the output end of the charging control module is connected with the input end of the discharging control module, and the output end of the discharging control module is connected with the input end of the protection function module. The output end of the protection function module is connected with the input end of the power output module, and the control and communication module is electrically connected with the multi-path control module. According to the utility model, the rapid seamless switching of power supply paths and the efficient and stable charging and discharging process are realized, the safety and reliability of an electronic equipment system are obviously improved, and the flexibility and adaptability of the charging and discharging control module are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a semiconductor technical field, concretely relates to a kind of charge-discharge protection integrated charge-discharge control module for multi-path control. BACKGROUND

[0002] With the wide application of electronic equipment and the gradual increase of battery-powered equipment demand, the current charge-discharge management module plays a vital role in various devices, and the traditional charge-discharge module usually needs to have the following functions: charge management, discharge management, battery protection, current detection and multi-path switching. However, due to the complexity of various application scenarios, the existing charge-discharge management module often has certain limitations when implementing multi-path control and protection functions.

[0003] Considering the application requirements of electronic equipment, how to design the current industry demand charge-discharge management module is an important issue to be solved in the industry. UTILITY MODEL CONTENT

[0004] Therefore, the utility model embodiment provides a kind of charge-discharge control module for the charge-discharge protection integrated charge-discharge control module of multi-path control, to solve the problem that the charge-discharge management module in prior art often has certain limitations when implementing multi-path control and protection functions.

[0005] According to the first aspect, the utility model embodiment provides a kind of charge-discharge control module for the charge-discharge protection integrated charge-discharge control module of multi-path control, comprising:

[0006] Multi-path power supply switching module, charge control module, discharge control module, protection function module, power output module and control and communication module;

[0007] The multi-path control module has multiple input terminals, and each input terminal of the multi-path control module is connected with an input signal, the output terminal of the multi-path control module is connected with the input terminal of the charge control module and the input terminal of the protection function module, the output terminal of the charge control module is connected with the input terminal of the discharge control module, the output terminal of the discharge control module is connected with the input terminal of the protection function module, the output terminal of the protection function module is connected with the input terminal of the power output module, the input terminal of the power output module is connected with load equipment, and the control and communication module is electrically connected with the multi-path control module and is used to control the power supply switching of input terminal of the multi-path control module and monitor battery state.

[0008] In the first embodiment of the first aspect, the multi-path control module comprises:

[0009] a first control switch corresponding to the input of the multi-path control module;

[0010] The multi-path control module is connected with the first control switch, the drain electrode of the first control switch is connected with the input of the multi-path control module, the source electrode of the first control switch is connected with the protection function module, and the gate electrode of the first control switch is connected with the ground through the first voltage dividing resistor.

[0011] In the second embodiment of the first aspect, the multi-path control module further comprises:

[0012] a second control switch and a third control switch corresponding to the input of the multi-path control module;

[0013] The source electrode of the second control switch is connected with the input of the multi-path control module, the drain electrode of the second control switch is connected with the ground through the second voltage dividing resistor, the drain electrode of the third control switch is connected with the source electrode of the first control switch, the source electrode of the third control switch is connected with the ground through the first voltage dividing resistor, and the gate electrode of the second control switch and the gate electrode of the third control switch are connected with each other.

[0014] In the third embodiment of the first aspect, the charging control module comprises a charging management chip, the charging management chip is used for charging management of the battery, dynamic adjustment of the charging current and the charging mode according to the state of the battery, and the overcharge protection function is provided;

[0015] The discharge control module comprises a discharge control circuit and a current detection circuit connected with each other, the discharge control module is used for monitoring the discharge process of the battery, ensuring the stability of the load current, and preventing the damage of the battery caused by over-discharge.

[0016] In the fourth embodiment of the first aspect, the charging management chip adopts an SLM6305 chip.

[0017] In the fifth embodiment of the first aspect, the protection function module specifically comprises:

[0018] An overcurrent protection unit is used for detecting the current size to protect the circuit from overcurrent damage;

[0019] An overvoltage protection unit is used for real-time monitoring of the voltage to avoid damage caused by excessively high input or output voltage;

[0020] A short-circuit protection unit is used for quickly cutting off the circuit when the power supply path or the load is short-circuited, so as to protect the battery and the element;

[0021] A superheat protection unit for detecting temperature and preventing component damage due to overheating.

[0022] With the first aspect, in the sixth implementation of the first aspect, the control and communication module comprises a communication control chip, which is used to monitor the voltage, current and capacity state data of the battery in real time, and transmit the data to the external device through the I 2 The C communication interface interacts with the external device.

[0023] With the sixth implementation of the first aspect, in the seventh implementation of the first aspect, the communication control chip adopts a MAX17048 chip.

[0024] With the first aspect, in the eighth implementation of the first aspect, the power output module comprises a buck-boost conversion circuit, which is used to stabilize the input voltage output by the multi-path power supply switching module.

[0025] With the eighth implementation of the first aspect, in the ninth implementation of the first aspect, the buck-boost conversion circuit adopts an LP5300BF chip.

[0026] The charging and discharging control module for multi-path control and charging and discharging protection integrates multi-path power supply switching, charging control, discharging control and comprehensive protection functions in the charging and discharging control module, realizes rapid and seamless switching of the power supply path and efficient and stable charging and discharging process, significantly improves the safety and reliability of the electronic device system, and improves the flexibility and adaptability of the charging and discharging control module through dynamic adjustment of the charging and discharging parameters and real-time monitoring function. At the same time, compared with the existing charging and discharging control module, the charging and discharging control module has higher integration and efficiency, can reduce the complexity and the number of components of the circuit design, reduce the manufacturing cost and volume, and significantly reduce the energy consumption, improve the friendliness to the working environment, and is suitable for various complex application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0028] Wherein:

[0029] Figure 1 One of the circuit schematic diagrams of the charging and discharging control module for multi-path control and charging and discharging protection provided by the utility model is shown in the figure.

[0030] Figure 2 The utility model provides a circuit schematic diagram two of the charge and discharge control module of charge and discharge protection integration for multipath control is provided;

[0031] Figure 3 The utility model provides a circuit schematic diagram three of the charge and discharge control module of charge and discharge protection integration for multipath control is provided;

[0032] Figure 4 The utility model provides a circuit schematic diagram four of the charge and discharge control module of charge and discharge protection integration for multipath control is provided;

[0033] Figure 5 The utility model provides a circuit schematic diagram five of the charge and discharge control module of charge and discharge protection integration for multipath control is provided;

[0034] Figure 6 The utility model provides a circuit schematic diagram six of the charge and discharge control module of charge and discharge protection integration for multipath control is provided;

[0035] Figure 7 The utility model provides a circuit schematic diagram seven of the charge and discharge control module of charge and discharge protection integration for multipath control is provided;

[0036] Figure 8 The utility model provides a schematic diagram of the charge and discharge control module of charge and discharge protection integration for multipath control is provided. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantage of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be described clearly and completely in conjunction with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0038] With the wide application of electronic equipment and the gradual increase of the demand of battery-powered equipment, the current charge and discharge management module plays a vital role in various equipment. The traditional charge and discharge module usually needs to have the following functions: charge management, discharge management, battery protection, current detection and multi-path switching. However, due to the complexity of various application scenarios, the existing charge and discharge management module often has certain limitations when realizing the multi-path control and protection function.

[0039] For example, the charge and discharge management module for multi-path control is mainly used to realize intelligent selection and switching of different power supply paths, for example, when the external power supply is connected, the charge and discharge management module preferentially uses the external power supply, and when the external power supply is disconnected, the charge and discharge management module automatically switches to battery power supply. In addition, real-time monitoring of the current and voltage in the power supply path is required, and overcurrent, overvoltage, and overheat protection functions are provided. However, the existing charge and discharge management module usually has problems such as complex design, low efficiency, and insufficient protection when integrating multi-path switching and protection.

[0040] Therefore, how to design a charge and discharge management module that meets the current industry demand is an important issue that needs to be solved in the industry.

[0041] In order to solve the above problems, a charge and discharge control module with integrated charge and discharge protection for multi-path control is provided in the specification. It can be understood that the charge and discharge control module with integrated charge and discharge protection for multi-path control provided in the specification can be applied to electronic devices, which can include notebooks, desktop computers, smartphones, smart wearable devices (virtual reality glasses, smart watches, etc.), tablets, etc.

[0042] Please refer to Figures 1 to 7 The charge and discharge control module comprises:

[0043] A multi-path control module, a charge control module, a discharge control module, a protection function module, a power output module, and a control and communication module. The multi-path control module has multiple input terminals, and each input terminal of the multi-path control module is connected to an input signal. The output terminal of the multi-path control module is connected to the input terminal of the charge control module and the input terminal of the protection function module. The output terminal of the charge control module is connected to the input terminal of the discharge control module. The output terminal of the discharge control module is connected to the input terminal of the protection function module. The output terminal of the protection function module is connected to the input terminal of the power output module. The input terminal of the power output module is connected to a load device, which is the electronic device mentioned above. The control and communication module is electrically connected to the multi-path control module and is used to control the multi-path control module to switch the power supply of the input terminal and monitor the battery status.

[0044] Please refer to Figure 5 In this embodiment, the multi-path control module is a multi-path power supply switching module in the charge and discharge control module, which is used for intelligent power supply switching between multiple paths. The charge and discharge control module has three input terminals, namely a first input terminal, a second input terminal, and a third input terminal. More specifically, the first input terminal is used to access the input of the external power supply path, the second input terminal is used to access the input of the USB path, and the third input terminal is used to access the input of the battery power supply path.

[0045] More specifically, the multi-path control module comprises:

[0046] A first control switch corresponding to each input terminal of the multi-path control module, each output terminal of the multi-path control module is connected with one first control switch, the first control switch is a MOSFET switch, such as Q21, Q19 and Q17 in the figure, the drain of the first control switch is connected with the input terminal of the multi-path control module, the source of the first control switch is connected with the protection function module, and the gate of the first control switch is connected with the ground through a voltage dividing resistor. Figure 5

[0047] Through the above arrangement, the multi-path control module can realize the judgment and switching of the priority power supply path based on the real-time detection of the input voltage and current, and ensure the continuity and stability of the power supply process.

[0048] The multi-path control module further comprises:

[0049] A second control switch and a third control switch corresponding to each input terminal of the multi-path control module, the second control switch and the third control switch are also MOSFET switches, the source of the second control switch is connected with the input terminal of the multi-path control module, the drain of the second control switch is connected with the ground through a second voltage dividing resistor, the drain of the third control switch is connected with the source of the first control switch, the source of the third control switch is connected with the ground through a first voltage dividing resistor, and the gate of the second control switch and the gate of the third control switch are connected with each other.

[0050] Through the above arrangement, the multi-path control module can realize the judgment and switching of the priority power supply path based on the real-time detection of the input voltage and current, and ensure the continuity and stability of the power supply process.

[0051] Referring to Figure 3 , the charging control module is a charging management module in the charge and discharge control module, and the charging control module comprises a charging management chip, such as U53 in the figure, which is used for intelligent charging management of the battery, can dynamically adjust the charging current and the charging mode (such as constant current charging and constant voltage charging) according to the battery state, and provides an overcharge protection function.

[0052] In the embodiment, the charging management chip adopts an SLM6305 chip.

[0053] The discharge control module is a discharge management module in the charge and discharge control module, and the discharge control module comprises a discharge control circuit and a current detection circuit connected with each other, which is used for monitoring the battery discharge process, ensuring the stability of the load current, and preventing over-discharge from damaging the battery.

[0054] ​The protection function module is configured to provide comprehensive protection functions, and specifically includes:

[0055] An over-current protection (OCP) unit is configured to protect the circuit from over-current damage by detecting the current size, such as Figure 3 the voltage on the sampling resistor R154 in the middle of the circuit, and

[0056] An over-voltage protection (OVP) unit is configured to prevent damage caused by excessively high input or output voltage by monitoring the voltage in real time.

[0057] A short-circuit protection (SCP) unit is configured to quickly cut off the circuit when a short circuit occurs in the power supply path or load, thereby protecting the battery and components.

[0058] An over-temperature protection (OTP) unit is configured to prevent component damage caused by overheating by detecting the temperature through a thermistor (NTC).

[0059] The control and communication module includes a communication control chip, such as Figure 6 U47 in the middle of the circuit, which is configured to monitor the voltage, current, capacity, and other state data of the battery in real time, and interact with external devices (such as a master control system) through an I 2 C communication interface, thereby achieving intelligent management and control.

[0060] In this embodiment, the communication control chip is a MAX17048 chip.

[0061] Please refer to Figure 5 The power output module includes a step-up / down conversion circuit, such as Figure 5 U36 in the middle of the circuit, which is configured to stabilize the input voltage output by the multi-path control module, ensuring that the output voltage meets the requirements of the load device

[0062] In this embodiment, the step-up / down conversion circuit is an LP5300BF chip.

[0063] The charging and discharging control module for multi-path control and charging and discharging protection of the utility model, through the integration of multi-path power supply switching, charging control, discharging control and comprehensive protection function in the charging and discharging control module, realizes the fast seamless switching of power supply path and the efficient and stable charging and discharging process, significantly improves the safety and reliability of electronic equipment system, and through the dynamic adjustment of charging and discharging parameters and real-time monitoring function, improves the flexibility and adaptability of the charging and discharging control module. At the same time, compared with the existing charging and discharging control module, the charging and discharging control module has higher integration and efficiency, can reduce the complexity of circuit design and the number of components, reduce the manufacturing cost and volume, and significantly reduce the energy consumption, improve the friendliness to the working environment, and is suitable for various complex application scenarios.

[0064] The apparatus embodiments described above are merely illustrative, wherein the units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0065] Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and necessary universal hardware platforms, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of software products, and the computer software products can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and include a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0066] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A charge / discharge control module integrating charge / discharge protection for multi-path control, characterized in that, include: Multipath control module, charging control module, discharging control module, protection function module, power output module, and control and communication module; The multipath control module has multiple input terminals, and each input terminal of the multipath control module is connected to an input signal. The output terminal of the multipath control module is connected to the input terminal of the charging control module and the input terminal of the protection function module. The output terminal of the charging control module is connected to the input terminal of the discharging control module. The output terminal of the discharging control module is connected to the input terminal of the protection function module. The output terminal of the protection function module is connected to the input terminal of the power output module. The input terminal of the power output module is connected to a load device. The control and communication module is electrically connected to the multipath control module and is used to control the multipath control module to switch the power supply at the input terminal and monitor the battery status.

2. The charge / discharge control module for multi-path control and integrated charge / discharge protection according to claim 1, characterized in that, The multipath control module includes: A first control switch that has the same number of input terminals as the multipath control module and corresponds one-to-one with them; Each output terminal of the multipath control module is connected to a first control switch. The drain of the first control switch is connected to the input terminal of the multipath control module, the source of the first control switch is connected to the protection function module, and the gate of the first control switch is grounded through a first voltage divider resistor.

3. The charge / discharge control module for multi-path control and integrated charge / discharge protection according to claim 2, characterized in that, The multipath control module also includes: A second control switch and a third control switch that are equal in number and correspond one-to-one with the input terminals of the multipath control module; The source of the second control switch is connected to the input terminal of the multipath control module, the drain of the second control switch is grounded through the second voltage divider resistor, the drain of the third control switch is connected to the source of the first control switch, the source of the third control switch is grounded through the first voltage divider resistor, and the gates of the second control switch and the third control switch are interconnected.

4. The charge / discharge control module for multi-path control and integrated charge / discharge protection according to claim 1, characterized in that, The charging control module includes a charging management chip, which is used to manage the charging of the battery, dynamically adjust the charging current and charging mode according to the battery status, and provide overcharge protection. The discharge control module includes an interconnected discharge control circuit and a current detection circuit. The discharge control module is used to monitor the battery discharge process, ensure stable load current, and prevent over-discharge from damaging the battery.

5. The charge / discharge control module for multi-path control with integrated charge / discharge protection according to claim 4, characterized in that, The charging management chip used is the SLM6305 chip.

6. The charge / discharge control module for multi-path control and integrated charge / discharge protection according to claim 1, characterized in that, The protection function module specifically includes: An overcurrent protection unit is used to detect the magnitude of the current to protect the circuit from overcurrent damage. An overvoltage protection unit is used to monitor the voltage in real time to prevent damage caused by excessive input or output voltage. A short-circuit protection unit is used to quickly disconnect the circuit and protect the battery and components when a short circuit occurs in the power supply path or load. An overheat protection unit is used to detect temperature and prevent component damage due to overheating.

7. The charge / discharge control module for multi-path control and integrated charge / discharge protection according to claim 1, characterized in that, The control and communication module includes a communication control chip, which is used to monitor the battery's voltage, current, and capacity status data in real time, and to communicate with the battery via I / O. 2 The C communication interface interacts with external devices.

8. The charge / discharge control module for multi-path control and integrated charge / discharge protection according to claim 7, characterized in that, The communication control chip used is the MAX17048 chip.

9. The charge / discharge control module for multi-path control with integrated charge / discharge protection according to claim 1, characterized in that, The power output module includes a buck-boost converter circuit, which is used to regulate the input voltage output by the multi-path power supply switching module.

10. The charge / discharge control module for multi-path control with integrated charge / discharge protection according to claim 9, characterized in that, The buck-boost conversion circuit uses the LP5300BF chip.

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