A quartz movement component with dual module power supply

Abstract

The utility model discloses a quartz movement component shared by dual-module power supplies, which comprises a display module, a display module mainboard, a quartz movement module, a power management module, a battery holder and a battery installed in the battery holder with an output voltage of a first voltage, wherein the battery is connected to the display module mainboard and the power management module respectively, and the display module mainboard is connected to the display module; the power management module can convert the output voltage of the battery into a stable second voltage that can be used by the quartz movement module, so that a single battery can meet the power supply requirements of the display module and the quartz movement module at the same time, thus avoiding a multi-battery design, saving a battery, thereby reducing production costs, facilitating battery installation and later disassembly and replacement, and ensuring that the power supply voltage of the quartz movement module is stable, so that the quartz movement module always operates in a state of optimal torque under the condition of effective power, thereby ensuring the timing accuracy of the quartz movement.

Description

Technical Field

[0001] The utility model relates to the technical field of quartz movement, in particular to a quartz movement component shared by a double-module power supply. Background Art

[0002] As we all know, the core component of a quartz watch is the quartz movement. With the continuous development of quartz watches, a display screen has been added to quartz watches, so that the display module and the quartz movement for electronic timing exist inside the quartz watch at the same time. Because the display module and the quartz movement have different power supply, the display module needs a voltage of 3V, while the quartz movement needs a voltage of 1.5V, so when the two modules are used in combination, two power supply batteries are required to provide power separately.

[0003] However, using a multi-battery design to simultaneously meet the dual-module power supply requirements of the display module and the quartz movement increases the design difficulty of the quartz watch, increases the size of the quartz watch, and increases the production material cost. In addition, battery replacement or installation is more complicated and difficult to operate, which affects the production and maintenance efficiency of the quartz watch. In addition, the torque of the quartz movement will undergo a corresponding linear decay as the battery voltage decays, thereby affecting the timing accuracy. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a quartz movement component shared by a dual-module power supply, which can achieve the purpose of a single battery meeting the power supply requirements of a display module and a quartz movement module at the same time, avoiding a multi-battery design, reducing production costs, facilitating the installation and later disassembly and replacement of the battery, and at the same time ensuring the stability of the power supply voltage of the quartz movement, thereby ensuring the timing accuracy of the quartz movement.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A quartz movement component shared by dual-module power supplies comprises a display module, a display module mainboard, a quartz movement module, a power management module, a battery holder and a battery installed in the battery holder with an output voltage of a first voltage, wherein the battery is respectively connected to the display module mainboard and the power management module, the display module mainboard is connected to the display module, and the power management module is used to convert the output voltage of the battery into a stable second voltage to supply power to the quartz movement module.

[0007] Preferably, the quartz movement assembly shared by the dual-module power supplies also includes a light-emitting sheet and a display module bracket, a display module accommodating space is provided on the upper portion of the display module bracket, and a movement accommodating space is provided on the lower portion of the display module bracket, the display module and the light-emitting sheet are embedded and installed in the display module accommodating space, the light-emitting sheet is located below the display module and is connected to the display module mainboard, the quartz movement module is embedded and installed in the movement accommodating space, the quartz movement module includes a quartz movement deck, a quartz movement drive mainboard and a quartz movement function cover sheet, and the power management module is arranged on the quartz movement drive mainboard or the display module mainboard.

[0008] Preferably, the power management module is arranged on the display module mainboard, the quartz movement module is provided with a positive connector and a negative connector, the display module mainboard is provided with a positive power interface connected to the positive connector and a negative power interface connected to the negative connector, the positive power interface is connected to the positive pole of the power output terminal of the power management module, and the negative power interface is connected to the negative pole of the power output terminal of the power management module.

[0009] Preferably, the positive electrode connector adopts a conductive spring, and the negative electrode connector adopts a conductive spring; or, the positive electrode connector adopts a conductive spring, and the negative electrode connector adopts a conductive spring.

[0010] Preferably, the positive electrode connector adopts a conductive spring, the negative electrode connector adopts a conductive spring, a spring fixing column is provided on the quartz movement module, and the conductive spring is sleeved on the spring fixing column.

[0011] Preferably, the power management module is arranged on the display module mainboard, and the power management module is connected to the quartz movement module by soldering of enameled wire.

[0012] Preferably, the power management module includes a power input terminal, a power output terminal, a reference voltage generating circuit, an operational amplifier, a transistor and an output sampling circuit; the power input terminal is used to connect to the battery, and the power output terminal is used to connect to the quartz movement module; the reference voltage generating circuit is connected to the power input terminal, and is used to output a reference voltage to the in-phase input terminal of the operational amplifier, and the reference voltage is less than the second voltage; the output terminal of the operational amplifier is connected to the base of the transistor, the collector of the transistor is connected to the power input terminal, and the emitter of the transistor is connected to the power output terminal; the output sampling circuit is used to sample the output voltage of the power management module, and feed the sampled voltage back to the inverting input terminal of the operational amplifier; the operational amplifier controls the output of the transistor according to the comparison result between the reference voltage and the sampling voltage, so that the power management module can output a stable second voltage.

[0013] Preferably, the reference voltage generating circuit includes a first resistor and a zener diode, one end of the first resistor is connected to the power input terminal, the other end of the first resistor is respectively connected to the cathode of the zener diode and the in-phase input terminal of the operational amplifier, and the anode of the zener diode is grounded.

[0014] Preferably, the output sampling circuit includes a second resistor and a third resistor, the emitter of the transistor is connected to ground via the second resistor and the third resistor in sequence, and the connection point between the second resistor and the third resistor is connected to the inverting input terminal of the operational amplifier.

[0015] Preferably, the first voltage is 3V, the second voltage is 1.5V, and the reference voltage is 1.2V.

[0016] The beneficial technical effect of the utility model is that the quartz movement component shared by the above-mentioned dual-module power supplies includes a power management module, which can convert the output voltage of the battery into a stable second voltage that can be used by the quartz movement module, so that a single battery can meet the power supply requirements of the display module and the quartz movement module at the same time, avoiding a multi-battery design, saving a battery, thereby reducing production costs, and facilitating the installation and subsequent disassembly and replacement of the battery. At the same time, it can ensure that the power supply voltage of the quartz movement module is stable, so that the quartz movement module always runs in the optimal torque state under the condition of effective power, thereby ensuring the timing accuracy of the quartz movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the exploded structure of the quartz movement assembly shared by the dual-module power supply of the utility model in one direction;

[0018] Figure 2It is a schematic diagram of the exploded structure of the quartz movement assembly shared by the dual-module power supply of the utility model in another direction;

[0019] Figure 3 This is a circuit schematic diagram of the power management module of the utility model. DETAILED DESCRIPTION

[0020] In order to enable ordinary technicians in the field to more clearly understand the purpose, technical solutions and advantages of the utility model, the utility model is further explained below in conjunction with the accompanying drawings and embodiments.

[0021] The utility model provides a quartz movement component shared by dual-module power supplies.

[0022] like Figure 1-2 As shown, in one embodiment of the utility model, the quartz movement assembly shared by the dual module power supply includes a display module 10, a display module mainboard 20, a quartz movement module 30, a battery 40, a battery holder 41, a display module bracket 50, a light-emitting sheet 60 and a power management module (not shown in the figure). The upper part of the display module bracket 50 is provided with a display module accommodating space 51, and the lower part of the display module bracket 50 is provided with a movement accommodating space 52. The display module 10 and the light-emitting sheet 60 are embedded and installed in the display module accommodating space 51, and the light-emitting sheet 60 is located below the display module 10. The quartz movement module 30 is embedded and installed in the movement accommodating space 52. The quartz movement module 30 includes a quartz movement deck 31, a quartz movement driving mainboard 32 and a quartz movement function cover sheet 33; the display module mainboard 20 and the battery holder 41 are arranged below the display module bracket 50, and the display module mainboard 20 is located between the battery holder 41 and the display module bracket 50.

[0023] The battery 40 is a button cell with a first output voltage. The battery 40 is installed in a battery holder 41 and fixed by a battery pressing sheet 42. The battery 40 is connected to the display module mainboard 20 and the power management module. The display module mainboard 20 is connected to the display module 10 and the light-emitting sheet 60. The power management module is used to convert the output voltage of the battery 40 into a stable second voltage to power the quartz movement module 30. In this embodiment, the first voltage is 3V and the second voltage is 1.5V. Of course, in other embodiments, the first voltage and the second voltage can select other voltage values ​​according to actual needs, so as to adapt to the display module and the quartz movement module 30.

[0024] like Figure 3As shown, the power management module includes a power input terminal, a power output terminal, a reference voltage generating circuit 101, an operational amplifier U1, a transistor Q1 and an output sampling circuit 102; the power input terminal is used to connect to the battery 40, and the power output terminal is used to connect to the quartz movement module 30; the reference voltage generating circuit 101 is connected to the power input terminal, and is used to output a reference voltage Vref to the non-inverting input terminal of the operational amplifier U1, and the reference voltage Vref is less than the second voltage; the output terminal of the operational amplifier U1 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the power input terminal, and the emitter of the transistor Q1 is connected to the power output terminal; the output sampling circuit 101 is used to sample the output voltage Vo of the power management module, and feed back the sampled sampled voltage Vn to the inverting input terminal of the operational amplifier U1; the operational amplifier U1 controls the output of the transistor Q1 according to the comparison result between the reference voltage Vref and the sampled voltage U1, so that the power management module can output a stable second voltage.

[0025] In this embodiment, the reference voltage generating circuit 101 includes a first resistor R1 and a voltage stabilizing diode D1. One end of the first resistor R1 is connected to the power input terminal, and the other end of the first resistor R1 is respectively connected to the cathode of the voltage stabilizing diode D1 and the non-inverting input terminal of the operational amplifier U1, and the anode of the voltage stabilizing diode D1 is grounded. The first resistor R1 and the voltage stabilizing diode D1 can form a reference voltage source to provide a reference voltage Vref that does not change with the outside world for the circuit. When the input voltage Vi changes, the reference voltage Vref remains substantially unchanged. Among them, the reference voltage Vref can be set according to actual conditions. For example, the reference voltage Vref in this embodiment is set to 1.2V. The first resistor R1 and the voltage stabilizing diode D1 can select appropriate specifications according to the reference voltage Vref to be set. For example, the resistance value of the first resistor R1 in this embodiment is 1.2MΩ, and the withstand voltage of the voltage stabilizing diode D1 is 1.2V. Of course, in other embodiments, the reference voltage generating circuit 101 can also be implemented using existing technology, thereby providing a reference voltage Vref that does not change with the outside world for the circuit.

[0026] In this embodiment, the output sampling circuit 102 includes a second resistor R2 and a third resistor R3, the emitter of the transistor Q1 is connected to ground after passing through the second resistor R2 and the third resistor R3 in sequence, and the connection point between the second resistor R2 and the third resistor R3 is connected to the inverting input terminal of the operational amplifier U1. When the output sampling circuit 101 samples the output voltage Vo of the power management module, due to the voltage division effect of the second resistor R2 and the third resistor R3, the sampled sampling voltage Vn is the voltage division of the output voltage Vo, and finally the sampled voltage Vn is fed back to the inverting input terminal of the operational amplifier U1. Among them, the second resistor R2 and the third resistor R3 can select appropriate specifications according to actual needs. For example, the resistance value of the second resistor R2 in this embodiment is 370KΩ, and the resistance value of the third resistor R3 is 1.2MΩ. Of course, in other embodiments, the output sampling circuit 102 can be implemented using existing technology, and the sampling result of the output sampling circuit 102 can be the output voltage Vo, or the voltage division of the output voltage Vo.

[0027] In this embodiment, the power input end of the power management module is connected in parallel with a filter capacitor C1, and the power output end of the power management module is connected in parallel with a filter capacitor C2; of course, in other embodiments, the power management module includes a power input end and a power output end and a filter capacitor may not be set.

[0028] The specific working process of the power management module is as follows: when the input voltage Vi increases, the output voltage Vo will tend to increase, and the increase in the output voltage Vo will increase the sampling voltage Vn; and since the reference voltage source Vref basically does not change, the increase in the sampling voltage Vn will reduce the output of the operational amplifier U1; and the transistor Q1 works in the state of an emitter follower, and when its base voltage decreases, the emitter voltage (equivalent to the output voltage Vo) will also decrease, thereby suppressing the trend of the output voltage Vo increasing. When the input voltage Vi decreases, the output voltage Vo will tend to decrease, and the decrease in the output voltage Vo will reduce the sampling voltage Vn; and since the reference voltage source Vref basically does not change, the decrease in the sampling voltage Vn will increase the output of the operational amplifier U1; and the transistor Q1 works in the state of an emitter follower, and when its base voltage increases, the emitter voltage (equivalent to the output voltage Vo) will also increase, thereby suppressing the trend of the output voltage Vo decreasing. Due to the virtual short input characteristic of the operational amplifier, it can be considered that Vn=Vref, so its output Vo=Vn*(R2+R3) / R3=Vref*(R2+R3) / R3. In this embodiment, Vref=1.2V, the resistance value of the second resistor R2 is 370KΩ, and the resistance value of the third resistor R3 is 1.2MΩ, then Vo=1.2V*(3.7K+1.2M) / 1.2M=1.5V. Therefore, the power management module can maintain a stable output of 1.5V.

[0029] In some embodiments of the utility model, the power management module may also use existing technologies to implement voltage conversion and voltage stabilization output, thereby outputting a stable second voltage that can be used by the quartz movement module 30 .

[0030] like Figure 1-2 As shown, in this embodiment, the power management module is arranged on the display module mainboard 20, and the quartz movement module 30 is provided with a conductive spring 34 and a conductive spring 35, which are respectively connected to the positive pole of the power input terminal and the negative pole of the power input terminal of the quartz movement driving mainboard 32, and the display module mainboard 20 is provided with a positive power interface 21 connected to the conductive spring 34 and a negative power interface 22 connected to the conductive spring 35, the positive power interface 21 is connected to the positive pole of the power output terminal of the power management module, and the negative power interface 22 is connected to the negative pole of the power output terminal of the power management module; the conductive spring 34 and the conductive spring 35 are respectively pressed against the positive power interface 21 and the negative power interface 22 to realize the conductive connection between the display module mainboard 20 and the quartz movement module 30. The conductive spring and conductive spring are used to realize the conductive connection between the display module mainboard 20 and the quartz movement module 30, which can not only meet the stability requirements of the conductive connection between the modules, but also can rely on the elastic force of the conductive spring and the conductive spring to improve the stability after the quartz movement module 30 is installed and fixed, so as to avoid the swing of the connection between the display module mainboard 20 and the quartz movement module 30, thereby preventing unnecessary collisions. In order to avoid the deviation of the conductive spring 35, a spring fixing column 36 is also provided on the quartz movement module 30, and the conductive spring 35 is sleeved on the spring fixing column 36. Of course, in other embodiments, a conductive spring can be used as the positive connector of the quartz movement module 30 to be conductively connected to the positive power interface 21 of the display module mainboard 20, and a conductive spring can be used as the negative connector of the quartz movement module 30 to be conductively connected to the negative power interface 22 of the display module mainboard 20.

[0031] In some embodiments of the utility model, the power management module is arranged on the display module mainboard 20, and the power management module is connected to the quartz movement module by soldering of enameled wire.

[0032] In some embodiments of the utility model, the power management module may also be arranged on the quartz movement driving mainboard 30 .

[0033] To sum up, the quartz movement component shared by the dual-module power supplies of the utility model includes a power management module, which can convert the 3V voltage output by the battery into a stable 1.5V voltage that can be used by the quartz movement module, so that a single battery can meet the power supply requirements of the display module and the quartz movement module at the same time, avoiding a multi-battery design, saving a battery, thereby reducing production costs, and facilitating the installation and subsequent disassembly and replacement of the battery. At the same time, it can ensure that the 1.5V power supply voltage of the quartz movement module is stable, so that the quartz movement module always runs in the optimal torque state under the condition of effective power, thereby ensuring the timing accuracy of the quartz movement.

[0034] The above description is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments, and all equivalent changes or modifications made within the scope of the claims should fall within the protection scope of the utility model.

Claims

1. A quartz movement assembly shared by dual module power supplies, characterized in that: It includes a display module, a display module mainboard, a quartz movement module, a power management module, a battery holder and a battery installed in the battery holder with an output voltage of a first voltage, the battery is respectively connected to the display module mainboard and the power management module, the display module mainboard is connected to the display module, and the power management module is used to convert the output voltage of the battery into a stable second voltage to power the quartz movement module.

2. The quartz movement assembly shared by dual module power supplies as claimed in claim 1, characterized in that: The quartz movement component shared by the dual-module power supply also includes a light-emitting sheet and a display module bracket. A display module accommodating space is provided on the upper part of the display module bracket, and a movement accommodating space is provided on the lower part of the display module bracket. The display module and the light-emitting sheet are embedded and installed in the display module accommodating space. The light-emitting sheet is located below the display module and is connected to the display module mainboard. The quartz movement module is embedded and installed in the movement accommodating space. The quartz movement module includes a quartz movement deck, a quartz movement drive mainboard and a quartz movement function cover sheet. The power management module is arranged on the quartz movement drive mainboard or the display module mainboard.

3. The quartz movement assembly shared by dual module power supplies as claimed in claim 1, characterized in that: The power management module is arranged on the display module mainboard, the quartz movement module is provided with a positive connector and a negative connector, the display module mainboard is provided with a positive power interface connected to the positive connector and a negative power interface connected to the negative connector, the positive power interface is connected to the positive pole of the power output terminal of the power management module, and the negative power interface is connected to the negative pole of the power output terminal of the power management module.

4. The quartz movement assembly shared by dual module power supplies as claimed in claim 3, characterized in that: The positive electrode connector adopts a conductive spring, and the negative electrode connector adopts a conductive spring; or, the positive electrode connector adopts a conductive spring, and the negative electrode connector adopts a conductive spring.

5. The quartz movement assembly shared by dual module power supplies as claimed in claim 3, characterized in that: The positive connector adopts a conductive spring, the negative connector adopts a conductive spring, a spring fixing column is arranged on the quartz movement module, and the conductive spring is sleeved on the spring fixing column.

6. The quartz movement assembly shared by dual module power supplies as claimed in claim 1, characterized in that: The power management module is arranged on the display module mainboard, and the power management module is connected and conducted with the quartz movement module through enameled wire soldering.

7. The quartz movement assembly shared by the dual-module power supply as claimed in any one of claims 1 to 6, characterized in that: The power management module includes a power input terminal, a power output terminal, a reference voltage generating circuit, an operational amplifier, a transistor and an output sampling circuit; the power input terminal is used to connect to the battery, and the power output terminal is used to connect to the quartz movement module; the reference voltage generating circuit is connected to the power input terminal, and is used to output a reference voltage to the in-phase input terminal of the operational amplifier, and the reference voltage is less than the second voltage; the output terminal of the operational amplifier is connected to the base of the transistor, the collector of the transistor is connected to the power input terminal, and the emitter of the transistor is connected to the power output terminal; the output sampling circuit is used to sample the output voltage of the power management module, and feed the sampled voltage back to the inverting input terminal of the operational amplifier; the operational amplifier controls the output of the transistor according to the comparison result between the reference voltage and the sampled voltage, so that the power management module can output a stable second voltage.

8. The quartz movement assembly shared by dual-module power supplies as claimed in claim 7, characterized in that: The reference voltage generating circuit includes a first resistor and a voltage regulator diode, one end of the first resistor is connected to the power input terminal, the other end of the first resistor is respectively connected to the cathode of the voltage regulator diode and the in-phase input terminal of the operational amplifier, and the anode of the voltage regulator diode is grounded.

9. The quartz movement assembly shared by dual module power supplies as claimed in claim 8, characterized in that: The output sampling circuit includes a second resistor and a third resistor. The emitter of the transistor is connected to ground after passing through the second resistor and the third resistor in sequence. The connection point between the second resistor and the third resistor is connected to the inverting input terminal of the operational amplifier.

10. The quartz movement assembly shared by dual module power supplies as claimed in claim 9, characterized in that: The first voltage is 3V, the second voltage is 1.5V, and the reference voltage is 1.2V.

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