Hand-held terminal with replaceable battery

Abstract

The invention provides a handheld terminal with a replaceable battery. The handheld terminal with the replaceable battery comprises a battery compartment, a standby battery and a switching circuit, wherein the battery compartment is a part of the shell of the handheld terminal and is used for placing a main battery; the main battery is connected with the input end of the switching circuit through the battery bin; the standby battery and the switching circuit are both located on a circuit board in the handheld terminal; the standby battery is connected with the input end of the switching circuit; the output end of the switching circuit is connected with the power supply end of the clock circuit. According to the handheld terminal with the replaceable battery, the battery can be conveniently replaced, the handheld terminal is not powered off, the system time does not need to be manually adjusted after the battery is replaced, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of handheld terminal design, and in particular to a handheld terminal with replaceable batteries. Background Art

[0002] Traditional handheld terminals mainly include a shell, a touch screen, a circuit board, and a battery. The circuit board is fixed inside the shell, and the touch screen is encapsulated on the front of the shell. In order to meet the protection level and electromagnetic compatibility requirements, the shell adopts an integrated design, and the battery is directly welded on the circuit board. At the same time, the clock circuit of the handheld terminal is also powered by the battery.

[0003] When the battery life is exhausted or the battery is damaged and needs to be replaced, the entire housing needs to be disassembled and professional tools need to be used to replace the battery, resulting in the battery replacement having to be returned to the factory. The clock timing of the handheld terminal will also return to the factory time due to battery power outage. After replacing the battery, the time needs to be manually adjusted again, which is very inconvenient, time-consuming, labor-intensive, costly, and has a poor user experience. Summary of the invention

[0004] The present invention provides a handheld terminal with replaceable batteries, which is used to solve the technical problem in the prior art that the convenience of replacing batteries is poor, resulting in poor user experience.

[0005] The present invention provides a handheld terminal with replaceable batteries, comprising: Battery compartment, backup battery and switching circuit; Among them, the battery compartment is a part of the handheld terminal shell, used for placing the main battery; the main battery is connected to the input end of the switching circuit through the battery compartment; the backup battery and the switching circuit are both located on the circuit board inside the handheld terminal; the backup battery is connected to the input end of the switching circuit; the output end of the switching circuit is connected to the power supply end of the clock circuit.

[0006] In some embodiments, the battery compartment includes a battery cover; The battery cover is used to fix the main battery.

[0007] In some embodiments, the battery cover is provided with screws; The screw is used to lock or remove the battery cover.

[0008] In some embodiments, the battery compartment further includes a conductive sealing ring; The conductive sealing ring is arranged inside the battery compartment to prevent dust, water and electromagnetic leakage.

[0009] In some embodiments, the handheld terminal with replaceable batteries further includes a battery extension cable; The battery extension line is used to connect the main battery and the input end of the switching circuit.

[0010] In some embodiments, when the main battery is removed from the battery compartment, the switching circuit switches the power supply of the clock circuit to that provided by the backup battery.

[0011] In some embodiments, the switching circuit includes a first Schottky diode; The first Schottky diode is a common cathode bidirectional diode, comprising two parallel diodes, wherein the anodes of the two parallel diodes are respectively the first pin and the second pin of the first Schottky diode; The first pin of the first Schottky diode is connected to the positive electrode of the backup battery, the second pin of the first Schottky diode is connected to the positive electrode of the main battery, and the cathode of the first Schottky diode is connected to the power supply end of the clock circuit.

[0012] In some embodiments, the backup battery comprises a button cell; The positive electrode of the button battery is connected to the first pin of the first Schottky diode, and the negative electrode of the button battery is grounded.

[0013] In some embodiments, the handheld terminal with replaceable battery further includes a second Schottky diode; The anode of the second Schottky diode is connected to the anode of the main battery.

[0014] In some embodiments, the handheld terminal with replaceable battery further comprises a resistor; The first end of the resistor is connected to the cathode of the second Schottky diode; the second end of the resistor is connected to the anode of the backup battery.

[0015] The handheld terminal with replaceable battery provided by the present invention comprises a battery compartment, a backup battery and a switching circuit; wherein the battery compartment is a part of the housing of the handheld terminal and is used to place the main battery; the main battery is connected to the input end of the switching circuit through the battery compartment; the backup battery and the switching circuit are both located on a circuit board inside the handheld terminal; the backup battery is connected to the input end of the switching circuit; the output end of the switching circuit is connected to the power supply end of the clock circuit. The handheld terminal with replaceable battery provided by the present invention realizes convenient battery replacement while the handheld terminal is powered on, and there is no need to manually adjust the system time after the replacement is completed, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is one of the structural schematic diagrams of the handheld terminal with replaceable batteries provided by the present invention.

[0018] Figure 2 This is the second structural schematic diagram of the handheld terminal with replaceable batteries provided by the present invention.

[0019] Figure 3 It is a principle diagram of the switching circuit provided by the present invention.

[0020] Reference numerals: 1: Battery compartment; 2: Backup battery; 3: Switching circuit; 4: Screws; 5: Conductive sealing ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Figure 1 FIG. 1 is a schematic diagram of a handheld terminal with replaceable battery provided by the present invention. Figure 1 As shown, the present invention provides a handheld terminal with replaceable batteries, comprising: a battery compartment 1, a backup battery 2 and a switching circuit 3.

[0023] Among them, the battery compartment 1 is a part of the handheld terminal shell, used for placing the main battery; the main battery is connected to the input end of the switching circuit 3 through the battery compartment 1; the backup battery 2 and the switching circuit 3 are both located on the circuit board inside the handheld terminal; the backup battery 2 is connected to the input end of the switching circuit 3; the output end of the switching circuit 3 is connected to the power supply end of the clock circuit.

[0024] Specifically, the handheld terminal includes a housing and an internal circuit board.

[0025] The handheld terminal housing is designed with a battery compartment. The battery traditionally welded on the circuit board is used as the main battery, and the battery compartment is used to place the main battery. Users can open the battery compartment to replace the main battery by themselves.

[0026] In order to keep the handheld terminal powered on when the main battery is replaced, a backup battery and a switching circuit are added. The backup battery and the switching circuit are both arranged inside the handheld terminal, specifically on a circuit board inside the handheld terminal.

[0027] When the main battery is placed in the battery compartment, it is connected to the input end of the switching circuit. The backup battery is also connected to the input end of the switching circuit. The switching between the main battery and the backup battery is achieved through the switching circuit.

[0028] The output end of the switching circuit is connected to the power supply end of the clock circuit, so that the clock circuit is continuously powered by the main battery and the backup battery.

[0029] The handheld terminal with replaceable batteries provided in the embodiment of the present application can replace the main battery more conveniently. When replacing the main battery, the power supply of the clock circuit can be automatically switched to the backup battery, ensuring that the clock timing of the handheld terminal will not return to the factory time due to battery power failure. Without affecting the protection level of the handheld terminal, the convenience of use is greatly improved, the cost of use is reduced, and the user experience is improved.

[0030] In some embodiments, the battery compartment includes a battery cover; The battery cover is used to fix the main battery.

[0031] Specifically, the battery compartment includes a battery cover, which is used to fix the main battery in the battery compartment. The user can open the battery cover on the battery compartment to directly replace the main battery, which improves the convenience of battery replacement in the handheld terminal.

[0032] In some embodiments, the battery cover is provided with screws; The screw is used to lock or remove the battery cover.

[0033] Specifically, Figure 2 FIG. 2 is a second structural diagram of a handheld terminal with replaceable batteries provided by the present invention. Figure 2 As shown, the battery cover on the battery compartment 1 may be provided with screws / screws 4, and the battery cover can be disassembled and locked by means of screws.

[0034] In some embodiments, the battery compartment further includes a conductive sealing ring; The conductive sealing ring is arranged inside the battery compartment to prevent dust, water and electromagnetic leakage.

[0035] Specifically, Figure 2 As shown, a conductive sealing ring 5 is provided around the interior of the battery compartment 1. The conductive sealing ring is a rubber ring that can both seal and conduct electricity. It is used to prevent dust and water as well as electromagnetic leakage to ensure that the protection level and electromagnetic compatibility requirements are met.

[0036] In some embodiments, the handheld terminal with replaceable batteries further includes a battery extension cable; The battery extension line is used to connect the main battery and the input end of the switching circuit.

[0037] Specifically, the handheld terminal further includes a battery extension line, and the main battery can be connected to the internal circuit board, specifically to the input end of the switching circuit, through the battery extension line.

[0038] In some embodiments, when the main battery is removed from the battery compartment, the switching circuit switches the power supply of the clock circuit to that provided by the backup battery.

[0039] Specifically, the main battery and the backup battery are both connected to the input end of the switching circuit, and the output end of the switching circuit is connected to the power supply end of the clock circuit. When the main battery is removed, the switching circuit will automatically switch the power supply of the clock circuit to the backup battery to ensure the correct timing of the clock circuit.

[0040] In some embodiments, the switching circuit includes a first Schottky diode; The first Schottky diode is a common cathode bidirectional diode, comprising two parallel diodes, wherein the anodes of the two parallel diodes are respectively the first pin and the second pin of the first Schottky diode; The first pin of the first Schottky diode is connected to the positive electrode of the backup battery, the second pin of the first Schottky diode is connected to the positive electrode of the main battery, and the cathode of the first Schottky diode is connected to the power supply end of the clock circuit.

[0041] Specifically, Figure 3 is a schematic diagram of a switching circuit provided by the present invention, such as Figure 3 As shown, the switching circuit includes a first Schottky diode D1.

[0042] The first Schottky diode D1 can be a common cathode bidirectional diode, which includes two parallel diodes, wherein the anode of one diode is the first pin of the first Schottky diode D1, the anode of the other diode is the second pin of the first Schottky diode D1, and the cathodes of the two diodes are connected together to form the cathode or the third pin of the first Schottky diode D1.

[0043] The first pin of the first Schottky diode D1 is connected to the positive electrode of the backup battery, the second pin of the first Schottky diode D1 is connected to the positive electrode VCC_BATTERY of the main battery, and the cathode / third pin of the first Schottky diode D1 is connected to the power supply end VCC_RTC of the clock circuit.

[0044] In some embodiments, the backup battery comprises a button cell; The positive electrode of the button battery is connected to the first pin of the first Schottky diode, and the negative electrode of the button battery is grounded.

[0045] Specifically, Figure 3 As shown, the backup battery includes a rechargeable button battery G1, the positive electrode of the rechargeable button battery G1 is connected to the first pin of the first Schottky diode D1, and the negative electrode of the rechargeable button battery G1 is connected to the ground.

[0046] In some embodiments, the handheld terminal with replaceable battery further includes a second Schottky diode; The anode of the second Schottky diode is connected to the anode of the main battery.

[0047] Specifically, Figure 3 As shown, the handheld terminal further includes a second Schottky diode D2, and the anode of the second Schottky diode D2 is connected to the anode VCC_BATTERY of the main battery.

[0048] In some embodiments, the handheld terminal with replaceable battery further comprises a resistor; The first end of the resistor is connected to the cathode of the second Schottky diode; the second end of the resistor is connected to the anode of the backup battery.

[0049] Specifically, Figure 3 As shown, the first end (pin 1) of the resistor R1 is connected to the cathode of the second Schottky diode D2, and the second end of the resistor R1 is connected to the anode of the rechargeable button battery G1.

[0050] like Figure 3 As shown, the working principle of the switching circuit is as follows: VCC_BATTERY is the 3.3V voltage converted from the battery voltage. VCC_BATTERY is connected to the second foot of the Schottky diode D1 and is also connected to the positive electrode of the Schottky diode D2.

[0051] The backup battery G1 is a rechargeable button battery with a nominal voltage of 3.0V and can be recharged 100 times or more. The positive electrode of the backup battery G1 is connected to the first foot of the Schottky diode D1, and the negative electrode of the backup battery G1 is connected to the ground.

[0052] VCC_RTC is the power supply voltage of the clock circuit, and VCC_RTC is connected to the third pin of the Schottky diode D1.

[0053] When the handheld terminal is connected to the battery, the voltage at VCC_BATTERY is 3.3V, and the voltage of the backup battery G1 is 3.0V. At this time, the 2nd pin of the Schottky diode is 3.3V, and the 1st pin is 3.0V. Since 3.0V is lower than 3.3V, the diodes at pins 2 and 3 of the Schottky diode are turned on, and the diodes at pins 1 and 3 are turned off. At this time, the power supply voltage VCC_RTC of the clock circuit is provided by the 3.3V battery voltage VCC_BATTERY. At the same time, VCC_BATTERY charges the backup battery G1 through the Schottky diode D2 and the current limiting resistor R1.

[0054] When the handheld terminal disconnects the battery, the battery voltage VCC_BATTERY drops to 0V, and the voltage of the backup battery G1 is 3.0V. At this time, the 2nd pin of the Schottky diode is 0V, and the 1st pin is 3.0V. Since 3.0V is greater than 0V, the diodes at pins 2 and 3 of the Schottky diode are cut off, and the diodes at pins 1 and 3 are turned on. At this time, the power supply voltage VCC_RTC of the clock circuit is provided by the backup battery voltage 3.0V.

[0055] The handheld terminal with replaceable batteries provided in the embodiment of the present application is designed with a battery compartment, a battery cover and a backup battery. The battery compartment is used to place the battery traditionally welded on the circuit board. The battery can be directly replaced by opening the battery cover on the battery compartment, ensuring that the protection level and electromagnetic compatibility requirements are met, while supporting convenient battery replacement. When replacing the battery, the power supply to the clock circuit is automatically switched to the backup battery, ensuring that the clock timing of the handheld terminal will not return to the factory time due to battery power failure, while achieving convenient battery replacement, so that the handheld terminal is not disconnected from the power supply, ensuring the correct timing of the clock circuit, so that there is no need to manually adjust the system time after the replacement is completed, which improves the user experience.

[0056] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present invention can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A handheld terminal with replaceable battery, characterized in that: include: Battery compartment, backup battery and switching circuit; Wherein, the battery compartment is a part of the housing of the handheld terminal and is used to place the main battery; The main battery is connected to the input end of the switching circuit through the battery compartment; the backup battery and the switching circuit are both located on a circuit board inside the handheld terminal; the backup battery is connected to the input end of the switching circuit; and the output end of the switching circuit is connected to the power supply end of the clock circuit.

2. The handheld terminal with replaceable battery according to claim 1, characterized in that: The battery compartment includes a battery cover; The battery cover is used to fix the main battery.

3. The handheld terminal with replaceable battery according to claim 2, characterized in that: The battery cover is provided with screws; The screw is used to lock or remove the battery cover.

4. The handheld terminal with replaceable battery according to claim 2, characterized in that: The battery compartment also includes a conductive sealing ring; The conductive sealing ring is arranged inside the battery compartment to prevent dust, water and electromagnetic leakage.

5. The handheld terminal with replaceable battery according to claim 1, characterized in that: The handheld terminal with replaceable battery also includes a battery extension cable; The battery extension line is used to connect the main battery and the input end of the switching circuit.

6. The handheld terminal with replaceable battery according to claim 1, characterized in that: When the main battery is taken out of the battery compartment, the switching circuit switches the power supply of the clock circuit to that provided by the backup battery.

7. The handheld terminal with replaceable battery according to claim 1, characterized in that: The switching circuit includes a first Schottky diode; The first Schottky diode is a common cathode bidirectional diode, comprising two parallel diodes, wherein the anodes of the two parallel diodes are respectively the first pin and the second pin of the first Schottky diode; The first pin of the first Schottky diode is connected to the positive electrode of the backup battery, the second pin of the first Schottky diode is connected to the positive electrode of the main battery, and the cathode of the first Schottky diode is connected to the power supply end of the clock circuit.

8. The handheld terminal with replaceable battery according to claim 7, characterized in that: The backup battery includes a button battery; The positive electrode of the button battery is connected to the first pin of the first Schottky diode, and the negative electrode of the button battery is grounded.

9. The handheld terminal with replaceable battery according to claim 1, characterized in that: The handheld terminal with replaceable battery also includes a second Schottky diode; The anode of the second Schottky diode is connected to the anode of the main battery.

10. The handheld terminal with replaceable battery according to claim 9, characterized in that: The handheld terminal with replaceable battery also includes a resistor; The first end of the resistor is connected to the cathode of the second Schottky diode; the second end of the resistor is connected to the anode of the backup battery.

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