Alkali lithium battery compatible system

Abstract

The invention provides an alkaline lithium battery compatible system. The system comprises a power supply input module, a lithium ion capacitor, an MCU module, a switch control module, a system power supply module and a sampling module, the input end of the power input module is used for connecting a battery, and the output end is connected with the input end of the system power module to transmit electric energy of the battery to the system power module; the sampling module is connected with the power supply input module and the MCU module, collects the output voltage of the power supply input module and transmits the output voltage to the MCU module; one end of the switch control module is connected with the output end of the power input module, and the other end is connected with the lithium ion capacitor; the MCU module is connected with the system power supply module and the switch control module, and judges the type of the battery based on the output voltage of the power supply input module; when the battery is a lithium battery, the switch control module is controlled to be switched on; and when the battery is an alkali battery, the switch control module is controlled to be switched off. Based on the alkaline lithium battery compatible system provided by the invention, compatible use of the alkaline lithium battery is realized.

Description

Technical Field

[0001] This application relates to the field of batteries, and particularly to an alkaline lithium battery compatible system. Background Art

[0002] In real life, users will choose to use a battery-powered device with either an alkaline battery or a lithium battery. To meet the needs of different customers, a dual-power supply solution with both alkaline batteries and lithium batteries is generally provided to users.

[0003] In the existing dual-power supply solutions, two separate battery interfaces are often used to connect the lithium battery and the alkaline battery respectively. Since the charging circuits used for lithium batteries and alkaline batteries are different, if the battery is connected to the wrong battery interface, it will cause damage to the components inside the charging circuit, thus triggering potential safety hazards. For example, lithium batteries need to be used in parallel with supercapacitors or lithium-ion capacitors, but the operating voltages of supercapacitors or lithium-ion capacitors are generally 3.9V or 5V. If used with overvoltage, it will cause explosion and fire. The voltage of alkaline batteries is generally 4V - 7V. If the voltage regulator fails or the battery interface is plugged in wrongly, it is very easy to cause overvoltage of the supercapacitor or lithium-ion capacitor, resulting in serious and irreversible consequences. Therefore, providing a solution that can be compatible with the charging of lithium batteries and alkaline batteries is a problem to be solved in this field. Summary of the Invention

[0004] This application provides an alkaline lithium battery compatible system, which can realize the compatible use of alkaline batteries and lithium batteries.

[0005] This application provides an alkaline lithium battery compatible system, which includes: a power input module, a lithium-ion capacitor, an MCU module, a switch control module, a system power module, and a sampling module;

[0006] The input end of the power input module is used to connect to the battery, and the output end of the power input module is connected to the input end of the system power module, for transmitting the electrical energy of the battery to the system power module;

[0007] The sampling module is connected to the power input module and the MCU module, for collecting the output voltage of the power input module and transmitting it to the MCU module;

[0008] One end of the switch control module is connected to the output end of the power input module, and the other end of the switch control module is connected to the lithium-ion capacitor; the MCU module is connected to the system power module and the switch control module, and the MCU module is used to judge the type of the battery based on the output voltage of the power input module collected by the sampling module; if the type of the battery is a lithium battery, the switch control module is controlled to conduct, so as to establish a connection between the lithium-ion capacitor and the output end of the power input module to form a parallel relationship; if the type of the battery is an alkaline battery, the switch control module is controlled to disconnect, so as to disconnect the connection between the lithium-ion capacitor and the output end of the power input module.

[0009] In one example, the MCU module is used to judge the type of the battery based on the output voltage of the power input module collected by the sampling module, including:

[0010] If the output voltage of the power input module is within a first voltage range, the MCU module determines that the type of the battery is a lithium battery; if the output voltage of the power input module is within a second voltage range, the MCU module determines that the type of the battery is an alkaline battery.

[0011] In one example, the switch control module includes: a switch unit;

[0012] One end of the switch unit is used as one end of the switch control module and is connected to the output end of the power input module, the other end of the switch unit is used as the other end of the switch control module and is connected to the lithium-ion capacitor, and the control end of the switch unit is connected to the MCU module, and is used to receive the control signal sent by the MCU module, and conduct when receiving the first control signal sent by the MCU module, and disconnect when receiving the second control signal sent by the MCU module, the first control signal is the control signal sent by the MCU module to the switch control module when determining that the type of the battery is a lithium battery, and the second control signal is the control signal sent by the MCU module to the switch control module when determining that the type of the battery is an alkaline battery.

[0013] In one example, the switch control module further includes: a first filtering unit;

[0014] One end of the first filtering unit is connected to the control end of the switch unit, and the other end of the first filtering unit is grounded, and is used to filter the control signal sent to the switch unit.

[0015] In one example, the sampling module includes a sampling unit;

[0016] One end of the sampling unit is connected to the power input module as one end of the sampling module, and the other end of the sampling unit is connected to the MCU module as the other end of the sampling module, for collecting the output voltage of the power input module and transmitting it to the MCU module.

[0017] In one example, the sampling module further includes a second filtering unit;

[0018] One end of the second filtering unit is connected to the other end of the sampling unit, and the other end of the second filtering unit is grounded, for filtering the output voltage of the power input module collected by the sampling unit.

[0019] In one example, the system further includes a voltage conversion module;

[0020] The input end of the voltage conversion module is connected to the output end of the power input module, and the output end of the voltage conversion module is connected to the input end of the system power module, for converting the voltage value of the output voltage of the power input module to the working voltage of the system power module and then transmitting it to the system power module.

[0021] In one example, the voltage conversion module includes a boost module and a buck module;

[0022] The input end of the boost module is connected to the output end of the power input module as the input end of the voltage conversion module, and the output end is connected to the input end of the buck module, for boosting the voltage value of the output voltage of the power input module to a preset first voltage and transmitting the output voltage with the voltage value of the first voltage to the buck module;

[0023] The output end of the buck module is connected to the system power module as the output end of the voltage conversion module, for reducing the voltage value of the output voltage from the first voltage to a preset second voltage and transmitting the output voltage with the voltage value of the second voltage to the system power module, and the second voltage is the working voltage of the system power module.

[0024] In one example, the system further includes: a filtering module, and the filtering module includes: a third filtering unit, a fourth filtering unit and a fifth filtering unit;

[0025] One end of the third filtering unit is connected to the output end of the power input module, and the other end of the third filtering unit is grounded, for filtering the output voltage of the power input module;

[0026] One end of the fourth filtering unit is connected to the output end of the boost module, and the other end of the fourth filtering unit is grounded, for filtering the output voltage of the boost module;

[0027] One end of the fifth filtering unit is connected to the output end of the buck module, and the other end of the fifth filtering unit is grounded, for filtering the output voltage of the buck module.

[0028] In one example, the system further includes: a liquid crystal display module;

[0029] The output end of the MCU module is further connected to the liquid crystal display module, and is further configured to calculate the remaining power of the battery based on the battery power calculation model, and transmit the remaining power of the battery to the liquid crystal display module, so that the liquid crystal display module displays the remaining power of the battery.

[0030] The alkali lithium battery compatible system provided by the present application, the system includes: a power input module, a lithium-ion capacitor, an MCU module, a switch control module, a system power module and a sampling module; wherein, the input end of the power input module is used to connect to the battery, and the output end is connected to the input end of the system power module, for transmitting the electric energy of the battery to the system power module; the sampling module is connected to the power input module and the MCU module, for collecting the output voltage of the power input module and transmitting it to the MCU module; one end of the switch control module is connected to the output end of the power input module, and the other end is connected to the lithium-ion capacitor; the MCU module is connected to the system power module and the switch control module, for judging the type of the battery based on the output voltage of the power input module collected by the sampling module; if the type of the battery is a lithium battery, controlling the switch control module to conduct, so as to establish a connection between the lithium-ion capacitor and the output end of the power input module to form a parallel relationship; if the type of the battery is an alkaline battery, controlling the switch control module to disconnect, so as to disconnect the connection between the lithium-ion capacitor and the output end of the power input module. The present application only provides one battery interface, which can prevent the battery from being connected to the wrong battery interface, and the MCU module can judge the type of the battery based on the output voltage of the power input module collected by the sampling module. Since the charging circuits used for alkaline batteries and lithium batteries are different, the corresponding charging circuit is switched for the battery based on the type of the battery. Specifically, when the battery is a lithium battery, the lithium-ion capacitor is conducted, and the lithium-ion capacitor is used in parallel with the lithium battery. When the battery is an alkaline battery, the lithium-ion capacitor is disconnected to prevent overvoltage of the lithium-ion capacitor. Therefore, the alkali lithium battery compatible system provided by the present application can realize the compatible use of alkaline batteries and lithium batteries. Description of the Drawings

[0031] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0032] Figure 1 Schematic diagram of the application scenario for an example of this application;

[0033] Figure 2 Schematic diagram of the structure of an alkali lithium battery compatible system provided in the first embodiment of this application;

[0034] Figure 3 Schematic diagram of the structure of another alkali lithium battery compatible system provided in the first embodiment of this application;

[0035] Figure 4 Schematic diagram of the structure of yet another alkali lithium battery compatible system provided in the first embodiment of this application;

[0036] Figure 5 Schematic diagram of the structure of yet another alkali lithium battery compatible system provided in the first embodiment of this application;

[0037] Figure 6 Schematic diagram of the structure of yet another alkali lithium battery compatible system provided in the first embodiment of this application;

[0038] Figure 7 Schematic diagram of the structure of yet another alkali lithium battery compatible system provided in the first embodiment of this application;

[0039] Figure 8 Schematic diagram of the structure of yet another alkali lithium battery compatible system provided in the first embodiment of this application;

[0040] Figure 9 Schematic diagram of the structure of yet another alkali lithium battery compatible system provided in the first embodiment of this application;

[0041] Figure 10 Schematic diagram of the structure of yet another alkali lithium battery compatible system provided in the first embodiment of this application;

[0042] Figure 11 Schematic diagram of the structure of yet another alkali lithium battery compatible system provided in the first embodiment of this application;

[0043] Figure 12 Schematic diagram of the structure of an alkali lithium battery compatible circuit provided in the second embodiment of this application.

[0044] Through the above accompanying drawings, specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These accompanying drawings and written descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by reference to specific embodiments. Detailed implementation manners

[0045] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of systems and systems consistent with some aspects of the present application as detailed in the appended claims.

[0046] Figure 1 This is a schematic diagram of the application scenario of the example of the present application. In real life, users will choose to use one of the alkaline battery or lithium battery for battery-powered devices. In order to meet the needs of different customers, a dual-power supply scheme with the coexistence of alkaline batteries and lithium batteries is generally provided to users.

[0047] In the existing dual-power supply schemes, two separate battery interfaces are often used to connect the lithium battery and the alkaline battery respectively. Since the charging circuits used for the lithium battery and the alkaline battery are different, if the wrong battery is connected to the battery interface, it will cause damage to the components inside the charging circuit, thus leading to potential safety hazards. For example, the lithium battery has problems such as weak transient discharge ability, low voltage, and easy passivation. It often needs to be used in parallel with a supercapacitor or a lithium-ion capacitor. However, the supercapacitor or the lithium-ion capacitor usually has the characteristics of strong activity, high energy density, and low device withstand voltage, such as generally 3.9V or 5V. If overvoltage is used, it will cause explosion and fire. The voltage of the alkaline battery is generally 4V - 7V, and the typical value is 6V - 6.5V. If the voltage regulator fails or the battery interface is plugged in wrongly, it is very easy to overvoltage the supercapacitor or the lithium-ion capacitor, resulting in serious and irreversible consequences. Therefore, providing a set of solutions that can be compatible with the charging of lithium batteries and alkaline batteries is a problem to be solved in this field.

[0048] The alkali-lithium battery compatible system provided by this application includes: a power input module, a lithium-ion capacitor, an MCU module, a switch control module, a system power module, and a sampling module; wherein, the input end of the power input module is used to connect to a battery, and the output end is connected to the input end of the system power module, for transmitting the electrical energy of the battery to the system power module; the sampling module is connected to the power input module and the MCU module, for collecting the output voltage of the power input module and transmitting it to the MCU module; one end of the switch control module is connected to the output end of the power input module, and the other end is connected to the lithium-ion capacitor; the MCU module is connected to the system power module and the switch control module, for judging the type of the battery based on the output voltage of the power input module collected by the sampling module; if the type of the battery is a lithium battery, then control the switch control module to conduct, so as to establish a connection between the lithium-ion capacitor and the output end of the power input module, forming a parallel relationship; if the type of the battery is an alkaline battery, then control the switch control module to disconnect, so as to disconnect the connection between the lithium-ion capacitor and the output end of the power input module. This application only provides one battery interface, which can prevent the wrong battery interface from being accessed, and the MCU module can judge the type of the battery based on the output voltage of the power input module collected by the sampling module. Since the charging circuits used for alkaline batteries and lithium batteries are different, corresponding charging circuits are switched for the battery based on the type of the battery. Specifically, when the battery is a lithium battery, the lithium-ion capacitor is conducted, and the lithium-ion capacitor is used in parallel with the lithium battery. When the battery is an alkaline battery, the lithium-ion capacitor is disconnected to prevent overvoltage of the lithium-ion capacitor. Therefore, the alkali-lithium battery compatible system provided by this application can realize the compatible use of alkaline batteries and lithium batteries.

[0049] It should be noted that the brief description of the terms in this application is only for the convenience of understanding the following described embodiments, rather than intending to limit the embodiments of this application. Unless otherwise specified, these terms should be understood in their ordinary and general meanings.

[0050] The technical solutions of this application will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. In the description of this application, unless otherwise clearly specified and limited, each term should be understood in a broad sense in the art. The embodiments of this application will be described below with reference to the accompanying drawings.

[0051] Embodiment 1

[0052] Figure 2 is a structural schematic diagram of an alkali-lithium battery compatible system provided by Embodiment 1 of this application, asFigure 2 As shown, the system includes: a power input module, a lithium-ion capacitor, an MCU module, a switch control module, a system power module, and a sampling module;

[0053] The input end of the power input module is used to connect to a battery, and the output end of the power input module is connected to the input end of the system power module, for transmitting the electrical energy of the battery to the system power module;

[0054] The sampling module is connected to the power input module and the MCU module, for collecting the output voltage of the power input module and transmitting it to the MCU module;

[0055] One end of the switch control module is connected to the output end of the power input module, and the other end of the switch control module is connected to the lithium-ion capacitor; the MCU module is connected to the system power module and the switch control module, and the MCU module is used to judge the type of the battery based on the output voltage of the power input module collected by the sampling module; if the type of the battery is a lithium battery, then control the switch control module to conduct, so as to establish a connection between the lithium-ion capacitor and the output end of the power input module, forming a parallel relationship; if the type of the battery is an alkaline battery, then control the switch control module to disconnect, so as to disconnect the connection between the lithium-ion capacitor and the output end of the power input module.

[0056] Combined with the scenario example, the input end of the power input module can serve as a battery interface for connecting a battery. There is only one battery interface in the power input module for the battery to be connected. The battery can be either a lithium battery or an alkaline battery, and the electrical energy of the connected battery is obtained and sent to the system power module. The sampling module can be an analog / digital (AD) sampling circuit, which can be implemented by an analog-to-digital converter. The acquisition module generally acquires the output voltage of the power input module, and the output voltage is the output voltage of the battery. The microcontroller unit (MCU) module determines whether the battery is a lithium battery or an alkaline battery based on the output voltage of the battery acquired by the acquisition module. The MCU module is a control module and can be implemented by software. When the switch control module is turned on, the parallel connection between the lithium-ion capacitor and the power input module can be conducted. When the switch control module is turned off, the connection between the lithium-ion capacitor and the power input module can be disconnected. When the battery is a lithium battery, considering the working properties of the lithium battery, it needs to be connected in parallel with the lithium-ion capacitor to achieve stable power supply. Therefore, the MCU module controls the switch control module to turn on. When the battery is an alkaline battery, since the working voltage of the alkaline battery is greater than the working voltage of the lithium-ion capacitor, in order to prevent the lithium-ion capacitor from being damaged due to overvoltage, the connection between the power input module and the lithium-ion capacitor needs to be disconnected. Therefore, the MCU module controls the switch control module to turn off.

[0057] This example only provides one battery interface, which can prevent the wrong battery interface from being connected. And the MCU module, through software, determines the type of the battery based on the output voltage of the power input module acquired by the sampling module. Since the charging circuits used for alkaline batteries and lithium batteries are different, corresponding charging circuits are switched for the battery based on the type of the battery. Specifically, when the battery is a lithium battery, the lithium-ion capacitor is turned on so that the lithium-ion capacitor and the lithium battery are used in parallel. When the battery is an alkaline battery, the lithium-ion capacitor is disconnected to prevent the lithium-ion capacitor from overvoltage. Therefore, the alkaline-lithium battery compatible system provided in this example can achieve the compatible use of alkaline batteries and lithium batteries.

[0058] Optionally, the MCU module is used to determine the type of the battery based on the output voltage of the power input module acquired by the sampling module, including:

[0059] If the output voltage of the power input module is within the first voltage range, the MCU module determines that the type of the battery is a lithium battery; if the output voltage of the power input module is within the second voltage range, the MCU module determines that the type of the battery is an alkaline battery.

[0060] Combined with the scenario example, since there are obvious differences in the output voltages of lithium batteries and alkaline batteries. For example, the output voltage of a lithium battery is generally 3V - 3.9V, while the output voltage of an alkaline battery is generally 4.5V - 7V. Therefore, the range of 3V - 3.9V can be set as the first voltage range, and the range of 4.5V - 7V can be set as the second voltage range. When the output voltage of the power input module is within the range of 3V - 3.9V, the MCU module can determine that the battery is a lithium battery. When the output voltage of the power input module is within the range of 4.5V - 7V, the MCU module can determine that the battery is an alkaline battery.

[0061] Optionally, Figure 3 The following is a schematic structural diagram of another alkaline lithium battery compatible system provided in the first embodiment of this application. As Figure 3 shown, the switch control module includes: a switch unit;

[0062] One end of the switch unit is connected to the output end of the power input module as one end of the switch control module, and the other end of the switch unit is connected to the lithium-ion capacitor as the other end of the switch control module. The control end of the switch unit is connected to the MCU module, and is used to receive the control signal sent by the MCU module, and conduct when receiving the first control signal sent by the MCU module, and disconnect when receiving the second control signal sent by the MCU module. The first control signal is the control signal sent by the MCU module to the switch control module when it determines that the type of the battery is a lithium battery, and the second control signal is the control signal sent by the MCU module to the switch control module when it determines that the type of the battery is an alkaline battery.

[0063] Combined with the scenario example, whether the switch control module is turned on or off depends on whether the switch unit is turned on or off. The switch unit can be composed of Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs). For example, two PMOS transistor switches are selected in series, and the gates of the two PMOS transistor switches are connected to the MCU module. The MCU module is used to send control signals to the PMOS transistor switches in the switch unit to control the on and off of the PMOS transistor switches. When the PMOS transistor switch is closed, the switch control module is turned on; when the PMOS transistor switch is opened, the switch control module is turned off. Therefore, when the battery is a lithium battery, the MCU module sends a first control signal to the two PMOS transistor switches, and the first control signal is a control signal for closing the PMOS transistor switches. When the battery is an alkaline battery, the MCU module sends a second control signal to the two PMOS transistor switches, and the second control signal is a control signal for opening the PMOS transistor switches.

[0064] Optionally, Figure 4 As shown in the structure diagram of another alkaline lithium battery compatible system provided in Embodiment 1 of the present application, Figure 4 as shown, the switch control module further includes: a first filtering unit;

[0065] One end of the first filtering unit is connected to the control end of the switch unit, and the other end of the first filtering unit is grounded, and is used for filtering the control signal sent to the switch unit.

[0066] Combined with the scenario example, in order to ensure that the control signal sent by the MCU module to the PMOS transistor switch is not interfered by clutter, a first filtering unit can be set in the switch control module. The first control signal or the second control signal is filtered by the first filtering unit, and the first filtering unit can be realized by a capacitor and a resistor.

[0067] Optionally, Figure 5 As shown in the structure diagram of another alkaline lithium battery compatible system provided in Embodiment 1 of the present application, Figure 5 as shown, the sampling module includes a sampling unit;

[0068] One end of the sampling unit is used as one end of the sampling module and is connected to the power input module, and the other end of the sampling unit is used as the other end of the sampling module and is connected to the MCU module, and is used for collecting the output voltage of the power input module and transmitting it to the MCU module.

[0069] Combined with the scenario example, the sampling unit can be composed of two triodes with different conduction voltages. The conduction voltage of the first triode can be set to the output voltage of the lithium battery, i.e., 3V - 3.9V, and the conduction voltage of the second triode can be set to the output voltage of the alkaline battery, i.e., 4.5V - 7V. And the two triodes are respectively connected to the MCU module. The output voltages of the power input module respectively pass through the two triodes, and can feedback conduction signals to the MCU module after conduction. If the MCU module receives the conduction signal of the first triode but does not receive the conduction signal of the second triode, it indicates that the voltage passing through at this time is in the range of 3V - 3.9V, indicating that the battery at this time is a lithium battery. If the MCU module receives both the conduction signal of the first triode and the conduction signal of the second triode, it indicates that the voltage passing through at this time is in the range of 4.5V - 7V, indicating that the battery at this time is an alkaline battery. In this example, the sampling unit performs single-channel AD sampling, and the MCU module judges the battery type through software, which simplifies the sampling module and reduces the device cost.

[0070] Optionally, Figure 6 As shown in the structure schematic diagram of another alkaline lithium battery compatible system provided in the first embodiment of the present application, as Figure 6 shown, the sampling module further includes a second filtering unit;

[0071] One end of the second filtering unit is connected to the other end of the sampling unit, and the other end of the second filtering unit is grounded, and is used for filtering the output voltage of the power input module collected by the sampling unit.

[0072] Combined with the scenario example, in order to ensure that the conduction signal sent by the triode in the sampling unit to the MCU module is not interfered by clutter, a second filtering unit can be set in the sampling module, and the conduction is filtered through the second filtering unit. The second filtering unit can be realized by a capacitor and a resistor.

[0073] Optionally, Figure 7 As shown in the structure schematic diagram of another alkaline lithium battery compatible system provided in the first embodiment of the present application, as Figure 7 shown, the system further includes a voltage conversion module;

[0074] The input end of the voltage conversion module is connected to the output end of the power input module, and the output end of the voltage conversion module is connected to the input end of the system power module, and is used for converting the voltage value of the output voltage of the power input module to the working voltage of the system power module and then transmitting it to the system power module.

[0075] Combined with the scenario example, the battery is connected to provide electrical energy for the system power module. Since the output voltage provided by the lithium battery is 3V - 3.9V, and the output voltage provided by the alkaline battery is 4.5V - 7V, but the operating voltage of the system power module is fixed, and the operating voltage of the system power module can be 3.3V. Therefore, the voltage conversion module is set between the power input module and the system power module to convert the output voltage of the lithium battery or the alkaline battery into the operating voltage of the system power module, and the voltage conversion module can be implemented by selecting a voltage conversion chip.

[0076] Optionally, Figure 8 As shown in the structure schematic diagram of another alkaline lithium battery compatible system provided in the first embodiment of the present application, Figure 8 as shown, the voltage conversion module includes a boost module and a buck module;

[0077] The input end of the boost module is connected to the output end of the power input module as the input end of the voltage conversion module, and the output end is connected to the input end of the buck module, and is used to boost the voltage value of the output voltage of the power input module to a preset first voltage, and transmit the output voltage with the voltage value of the first voltage to the buck module;

[0078] The output end of the buck module is connected to the system power module as the output end of the voltage conversion module, and is used to step down the voltage value of the output voltage from the first voltage to a preset second voltage, and transmit the output voltage with the voltage value of the second voltage to the system power module, and the second voltage is the operating voltage of the system power module.

[0079] Combined with the scenario example, when converting the output voltage of the battery, the output voltage can be first boosted to a first voltage by a boost module. The first voltage can be selected as 10V. Then, the first voltage is stepped down to a second voltage by the buck module, and the second voltage is 3.3V. For the voltage conversion module, the operation of first boosting and then reducing the output voltage can achieve a relatively wide voltage input range, which can ensure the compatible use of lithium batteries and alkaline batteries. Both the boost module and the buck module are implemented by a direct current-direct current (DC-DC) converter. Generally, the efficiency of a single-stage DC-DC converter is greater than 80%, and the total efficiency of a two-stage DC-DC converter is greater than 64%, which is much higher than the conversion efficiency of directly using a voltage regulator to step down the voltage. The DC-DC converter in the boost module can be selected to be implemented by a boost conversion chip, and the DC-DC converter in the buck module can be selected to be implemented by a buck conversion chip. The boost module and the buck module provided in this example improve the conversion efficiency of electrical energy, enhance the battery utilization rate, and at the same time expand the input voltage range, leaving an upgrade space for subsequent adaptation to other batteries.

[0080] Optionally, Figure 9 As shown in the structural schematic diagram of another alkaline lithium battery compatible system provided in the first embodiment of the present application, Figure 9 as shown, the system further includes: a filtering module, and the filtering module includes: a third filtering unit, a fourth filtering unit, and a fifth filtering unit;

[0081] One end of the third filtering unit is connected to the output end of the power input module, and the other end of the third filtering unit is grounded, and is used for filtering the output voltage of the power input module;

[0082] One end of the fourth filtering unit is connected to the output end of the boost module, and the other end of the fourth filtering unit is grounded, and is used for filtering the output voltage of the boost module;

[0083] One end of the fifth filtering unit is connected to the output end of the buck module, and the other end of the fifth filtering unit is grounded, and is used for filtering the output voltage of the buck module.

[0084] Combined with the scenario example, in order to eliminate the clutter in the output voltage output by the power input module, the third filtering unit can be added to the output end of the power input module, and the third filtering unit can be implemented by a capacitor; similarly, in order to eliminate the clutter in the first voltage output by the boost module, the fourth filtering unit can be added to the output end of the boost module, and the fourth filtering unit can be implemented by two capacitors in parallel; in order to eliminate the clutter in the second voltage output by the buck module, the fifth filtering unit can be added to the output end of the buck module, and the fifth filtering unit can be implemented by three capacitors in parallel.

[0085] Optionally, Figure 10 As shown in the structural schematic diagram of another alkaline lithium battery compatible system provided in the first embodiment of the present application, Figure 10 as shown, the system further includes: a liquid crystal display module;

[0086] The output end of the MCU module is also connected to the liquid crystal display module, and is further configured to calculate the remaining power of the battery based on the battery power calculation model, and transmit the remaining power of the battery to the liquid crystal display module, so that the liquid crystal display module displays the remaining power of the battery.

[0087] Combined with the scenario example, charging with the alkaline battery or lithium battery can be applied to various industries. For example, in the meter industry, the alkaline battery or lithium battery is used for charging. For a clock, the display of the battery power can timely remind the user whether charging is needed. Therefore, the alkaline lithium battery compatible system provided in this example further includes a liquid crystal display module. After determining the type of the battery, the MCU module will calculate the remaining power of the battery by using the battery power calculation model of this type, and send the remaining power to the liquid crystal display module, so that the liquid crystal display module displays the remaining power of the battery sent by the MCU module. On the liquid crystal display module, the remaining power of the battery can be displayed in the form of a percentage.

[0088] Optionally, Figure 11 As shown in the structural schematic diagram of another alkaline lithium battery compatible system provided in the first embodiment of the present application, Figure 11 as shown, the system further includes: a plurality of function modules; the input end of each function module is connected to the output end of the MCU module, and the MCU module can send an enable signal to each function module to enable each function module to work. For example, if the function module includes a pointer control module, the MCU module can send an enable signal for controlling the pointer to rotate to the pointer control module, so that the pointer control module controls the pointer to run according to the established rules.

[0089] The alkali-lithium battery compatible system provided in this embodiment includes: a power input module, a lithium-ion capacitor, an MCU module, a switch control module, a system power module, and a sampling module; wherein, the input end of the power input module is used to connect to the battery, and the output end is connected to the input end of the system power module for transmitting the electrical energy of the battery to the system power module; the sampling module is connected to the power input module and the MCU module for collecting the output voltage of the power input module and transmitting it to the MCU module; one end of the switch control module is connected to the output end of the power input module, and the other end is connected to the lithium-ion capacitor; the MCU module is connected to the system power module and the switch control module for judging the type of the battery based on the output voltage of the power input module collected by the sampling module; if the type of the battery is a lithium battery, the switch control module is controlled to conduct to establish a connection between the lithium-ion capacitor and the output end of the power input module to form a parallel relationship; if the type of the battery is an alkaline battery, the switch control module is controlled to disconnect to disconnect the connection between the lithium-ion capacitor and the output end of the power input module. This embodiment provides only one battery interface, which can prevent the battery from being connected to the wrong battery interface, and the MCU module can judge the type of the battery based on the output voltage of the power input module collected by the sampling module. Since the charging circuits used for alkaline batteries and lithium batteries are different, corresponding charging circuits are switched for the battery based on the type of the battery. Specifically, when the battery is a lithium battery, the lithium-ion capacitor is conducted to be used in parallel with the lithium battery; when the battery is an alkaline battery, the lithium-ion capacitor is disconnected to prevent overvoltage of the lithium-ion capacitor. Therefore, the alkali-lithium battery compatible system provided in this embodiment can realize the compatible use of alkaline batteries and lithium batteries.

[0090] Embodiment 2

[0091] Figure 12 is a schematic structural diagram of an alkali-lithium battery compatible circuit provided in the second embodiment of the present application, as Figure 12As shown, the circuit includes: a power input module P1, a lithium-ion capacitor C101, an MCU module, a switch control module, a system power module, a sampling module, a filtering module, a boost module, and a buck module. The switch control module includes a switch unit, a first filtering unit, and a first resistor R1. The switch unit is composed of a first MOS transistor Q1 and a second MOS transistor Q2. After receiving the first control signal from the MCU module, the switch unit turns on Q1 and Q2, so that the lithium-ion capacitor C101 is in parallel with the power input module P1. After receiving the second control signal from the MCU module, Q1 and Q2 are pulled up through the first resistor R1, and there is no voltage difference between the gate and the drain, so the conduction condition is not met. Therefore, at this time, Q1 and Q2 are turned off, and the lithium-ion capacitor C101 is not connected to the power input module P1. The first filtering unit is composed of a second resistor R2 and a first capacitor C1, and mainly filters the control signal. The sampling circuit includes a sampling unit, a second filtering circuit, a third resistor R3, a fourth resistor R4, and a fifth resistor R5. The sampling unit includes a first triode Q3 and a second triode Q4. When the battery is a lithium battery, the output voltage is 3V - 3.9V. When the battery is an alkaline battery, the output voltage is 4.5 - 7V. Therefore, the conduction voltage of the first triode Q3 can be set to 3V - 3.9V, and the conduction voltage of the second triode Q4 can be set to 4.5 - 7V. When the battery is a lithium battery, Q3 conducts. When the battery is an alkaline battery, both Q3 and Q4 conduct. Q3 and Q4 send a conduction signal to the MCU module to enable the MCU module to judge the battery type. The second filtering unit is composed of a sixth resistor R6 and a second capacitor C2, and mainly filters the conduction signal. The third resistor R3, the fourth resistor R4, and the fifth resistor R5 mainly play a role in current limiting in the circuit. The boost module is composed of a boost conversion chip U1, an inductor L1, a first diode D1, a seventh resistor R7, an eighth resistor R8, and a ninth resistor R9. The boost conversion chip is in parallel with the first inductor L1, and boosts the output voltage of the power input module to 10V. The first diode D1 prevents the current in the boost module from flowing backward. The seventh resistor R7, the eighth resistor R8, and the ninth resistor R9 play a role in current limiting. The buck module is composed of a buck conversion chip U2, a second inductor L2, a third capacitor C3, a fourth capacitor C4, a second diode D2, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, and a thirteenth resistor R13. Among them, the buck conversion chip U2 is in series with the second inductor L2 and is used to step down the 10V voltage to 3.3V. The second diode D2 prevents the current in the buck module from flowing backward. The third capacitor C3 and the fourth capacitor C4 play a role in filtering in the buck module. The tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, and the thirteenth resistor R13 play a role in current limiting in the buck module.The filtering module includes a third filtering unit, a fourth filtering unit and a fifth filtering unit. The third filtering unit includes a fifth capacitor C5 for filtering the output voltage output by the power input module; the fourth filtering unit includes a sixth capacitor C6 and a seventh capacitor C7 for filtering the 10V voltage output by the boost module; the fifth filtering unit includes an eighth capacitor C8, a ninth capacitor C9 and a tenth capacitor C10 for filtering the 3.3V voltage output by the buck module. In addition, the alkaline lithium battery compatible circuit further includes a third diode D3, which functions to prevent the output current of the power input module from flowing backward.

[0092] This embodiment can prevent the battery from being connected to the wrong battery interface, and the MCU module can determine the type of the battery based on the output voltage of the power input module collected by the sampling module. Since the charging circuits used for alkaline batteries and lithium batteries are different, corresponding charging circuits are switched for the battery according to the type of the battery. Specifically, when the battery is a lithium battery, the lithium-ion capacitor is turned on so that the lithium-ion capacitor is used in parallel with the lithium battery; when the battery is an alkaline battery, the lithium-ion capacitor is disconnected to prevent overvoltage of the lithium-ion capacitor. Therefore, the alkaline lithium battery compatible circuit provided by this embodiment can achieve the compatible use of alkaline batteries and lithium batteries.

[0093] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the invention herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not claimed in the present application. The specification and embodiments are only to be considered as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0094] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. An alkali lithium battery compatible system, characterized in that, The system includes: a power input module, a lithium-ion capacitor, an MCU module, a switch control module, a system power module, and a sampling module; The input end of the power input module is used to connect to a battery, and the output end of the power input module is connected to the input end of the system power module, for transmitting the electrical energy of the battery to the system power module; The sampling module is connected to the power input module and the MCU module, for collecting the output voltage of the power input module and transmitting it to the MCU module; One end of the switch control module is connected to the output end of the power input module, and the other end of the switch control module is connected to the lithium-ion capacitor; the MCU module is connected to the system power module and the switch control module, and the MCU module is used to determine the type of the battery based on the output voltage of the power input module collected by the sampling module; if the type of the battery is a lithium battery, it controls the switch control module to conduct, so as to establish a connection between the lithium-ion capacitor and the output end of the power input module to form a parallel relationship; if the type of the battery is an alkaline battery, it controls the switch control module to disconnect, so as to disconnect the connection between the lithium-ion capacitor and the output end of the power input module.

2. The system according to claim 1, wherein The MCU module is used to determine the type of the battery based on the output voltage of the power input module collected by the sampling module, including: If the output voltage of the power input module is within a first voltage range, the MCU module determines that the type of the battery is a lithium battery; if the output voltage of the power input module is within a second voltage range, the MCU module determines that the type of the battery is an alkaline battery.

3. The system according to claim 1, wherein The switch control module includes: a switch unit; One end of the switch unit is used as one end of the switch control module and is connected to the output end of the power input module, the other end of the switch unit is used as the other end of the switch control module and is connected to the lithium-ion capacitor, and the control end of the switch unit is connected to the MCU module, for receiving the control signal sent by the MCU module, and conducting when receiving the first control signal sent by the MCU module, and disconnecting when receiving the second control signal sent by the MCU module, where the first control signal is the control signal sent by the MCU module when determining that the type of the battery is a lithium battery to the switch control module, and the second control signal is the control signal sent by the MCU module when determining that the type of the battery is an alkaline battery to the switch control module.

4. The system according to claim 3, characterized in that, The switch control module further includes: a first filtering unit; One end of the first filtering unit is connected to the control end of the switch unit, and the other end of the first filtering unit is grounded, for filtering the control signal sent to the switch unit.

5. The system according to claim 1, wherein The sampling module includes a sampling unit; One end of the sampling unit is connected to the power input module as one end of the sampling module, and the other end of the sampling unit is connected to the MCU module as the other end of the sampling module, for collecting the output voltage of the power input module and transmitting it to the MCU module.

6. The system according to claim 1, wherein The sampling module further includes a second filtering unit; One end of the second filtering unit is connected to the other end of the sampling unit, and the other end of the second filtering unit is grounded, for filtering the output voltage of the power input module collected by the sampling unit.

7. The system according to claim 1, characterized in that, The system further includes a voltage conversion module; The input end of the voltage conversion module is connected to the output end of the power input module, and the output end of the voltage conversion module is connected to the input end of the system power module, for converting the voltage value of the output voltage of the power input module to the operating voltage of the system power module and then transmitting it to the system power module.

8. The system according to claim 7, wherein The voltage conversion module includes a boost module and a buck module; The input end of the boost module is connected to the output end of the power input module as the input end of the voltage conversion module, and the output end is connected to the input end of the buck module, for boosting the voltage value of the output voltage of the power input module to a preset first voltage and transmitting the output voltage with the voltage value of the first voltage to the buck module; The output end of the buck module is connected to the system power module as the output end of the voltage conversion module, for stepping down the voltage value of the output voltage from the first voltage to a preset second voltage and transmitting the output voltage with the voltage value of the second voltage to the system power module, and the second voltage is the operating voltage of the system power module.

9. The system according to claim 8, characterized in that, The system further includes: a filtering module, and the filtering module includes: a third filtering unit, a fourth filtering unit and a fifth filtering unit; One end of the third filtering unit is connected to the output end of the power input module, and the other end of the third filtering unit is grounded, for filtering the output voltage of the power input module; One end of the fourth filtering unit is connected to the output end of the boost module, and the other end of the fourth filtering unit is grounded, for filtering the output voltage of the boost module; One end of the fifth filtering unit is connected to the output end of the buck module, and the other end of the fifth filtering unit is grounded, for filtering the output voltage of the buck module.

10. The system according to any one of claims 1-9, characterized in that, The system further includes: a liquid crystal display module; The output end of the MCU module is further connected to the liquid crystal display module, and is further used for calculating the remaining power of the battery based on the battery power calculation model and transmitting the remaining power of the battery to the liquid crystal display module, so that the liquid crystal display module displays the remaining power of the battery.

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