Reinforced tablet computer with replaceable battery

Abstract

The utility model discloses a reinforced tablet personal computer with a replaceable battery, which comprises a computer body and an external battery compartment arranged on the computer body, a power supply battery is arranged in the computer body, a rechargeable battery is arranged in the external battery compartment, and the battery is arranged in the external battery compartment. Both the power supply battery and the rechargeable battery can supply power to a clock module of the computer body, a circuit board of the computer body is provided with a switching circuit, and the switching circuit is connected with the power supply battery and the rechargeable battery at the same time. And the switching circuit is used for switching the rechargeable battery to supply power to the clock module when the voltage of the power supply battery is lower than that of the rechargeable battery. According to the clock circuit, when the voltage of the power supply battery is lower than that of the rechargeable battery, the rechargeable battery is switched to supply power to the clock module, and correct timing of the clock circuit is guaranteed.

Description

Technical Field

[0001] The utility model relates to a reinforced tablet computer with replaceable batteries. Background Art

[0002] Traditional rugged tablet computers 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 to the circuit board. At the same time, the clock circuit of the rugged tablet computer is also powered by the battery. When the battery life is exhausted or the battery is damaged and needs to be replaced, the entire shell needs to be disassembled and professional tools need to be used to replace the battery. As a result, the battery replacement can only be completed by returning to the factory. The clock timing of the rugged tablet computer 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 and labor-intensive, and costly, and the user experience is poor. Utility Model Content

[0003] The main purpose of the utility model is to provide a reinforced tablet computer with a replaceable battery, aiming to solve the above technical problems.

[0004] To achieve the above-mentioned objectives, the utility model proposes a reinforced tablet computer with a replaceable battery, including a computer body and an external battery compartment arranged on the computer body. A power battery is provided inside the computer body, and a rechargeable battery is provided inside the external battery compartment. Both the power battery and the rechargeable battery can supply power to the clock module of the computer body. A switching circuit is provided on the circuit board of the computer body, and the switching circuit is connected to the power battery and the rechargeable battery at the same time. The switching circuit is used to switch the rechargeable battery to supply power to the clock module when the voltage of the power battery is lower than the voltage of the rechargeable battery.

[0005] In one embodiment, the switching circuit includes a first Schottky diode and a second Schottky diode, the first end and the second end of the second Schottky diode are respectively connected to the power battery and the first end of the rechargeable battery, the first end of the rechargeable battery is also connected to the first end of the first Schottky diode, the power battery is also connected to the second end of the first Schottky diode, and the second end of the rechargeable battery is grounded.

[0006] In one embodiment, the third end of the first Schottky diode is connected to a clock module of the computer body.

[0007] In one embodiment, the switching circuit further includes a current limiting resistor connected between the second Schottky diode and the rechargeable battery.

[0008] In one embodiment, the external battery compartment is disposed on the back of the computer body.

[0009] In one embodiment, the external battery compartment has a cavity for accommodating the rechargeable battery.

[0010] In one embodiment, a battery cover capable of closing the cavity is detachably provided on the external battery compartment.

[0011] In one embodiment, a conductive sealing ring is provided on the external battery compartment.

[0012] In one embodiment, the battery cover and the external battery compartment are connected by bolts or snaps.

[0013] In one embodiment, a device nameplate is provided on the computer body.

[0014] In the technical solution of the present utility model, a reinforced tablet computer with a replaceable battery includes a computer body and an external battery compartment arranged on the computer body. The computer body is provided with a power supply battery, and the external battery compartment is provided with a rechargeable battery. Both the power supply battery and the rechargeable battery can supply power to the clock module of the computer body. A switching circuit is provided on the circuit board of the computer body. The switching circuit is connected to the power supply battery and the rechargeable battery at the same time. The switching circuit is used to switch the rechargeable battery to supply power to the clock module when the voltage of the power supply battery is lower than the voltage of the rechargeable battery. Therefore, in the present technical solution, when the voltage of the power supply battery is lower than the voltage of the rechargeable battery, the rechargeable battery is switched to supply power to the clock module to ensure the correct timing of the clock circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of a reinforced tablet computer with a replaceable battery according to an embodiment of the present invention;

[0017] Figure 2 FIG. 1 is a circuit diagram of a switching circuit according to an embodiment of the present invention.

[0018] Explanation of the accompanying figures: 10, computer body; 20, external battery compartment; 30, cavity; 40, conductive sealing ring; Q1, power battery; Q2, rechargeable battery; D1, first Schottky diode; D2, second Schottky diode, KT; clock module; R, current limiting resistor.

[0019] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0023] Moreover, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] The utility model provides a reinforced tablet computer with replaceable batteries.

[0025] like Figure 1As shown, the reinforced tablet computer with replaceable batteries provided by an embodiment of the present invention includes a computer body 10 and an external battery compartment 20 arranged on the computer body 10. A power battery Q1 is provided inside the computer body 10, and a rechargeable battery Q2 is provided inside the external battery compartment 20. Both the power battery Q1 and the rechargeable battery Q2 can supply power to the clock module KT of the computer body 10. A switching circuit is provided on the circuit board of the computer body 10, and the switching circuit is connected to the power battery Q1 and the rechargeable battery Q2 at the same time. The switching circuit is used to switch the rechargeable battery Q2 to supply power to the clock module KT when the voltage of the power battery Q1 is lower than the voltage of the rechargeable battery Q2.

[0026] In this embodiment, when the voltage of the power battery Q1 is lower than the voltage of the rechargeable battery Q2, the rechargeable battery Q2 is switched to supply power to the clock module KT to ensure correct timing of the clock circuit.

[0027] Specifically, please refer to Figure 2 The switching circuit includes a first Schottky diode D1 and a second Schottky diode D2. The first and second ends of the second Schottky diode D2 are connected to the power battery Q1 and the first end of the rechargeable battery Q2, respectively. The first end of the rechargeable battery Q2 is also connected to the first end of the first Schottky diode D1. The power battery Q1 is also connected to the second end of the first Schottky diode D1. The second end of the rechargeable battery Q2 is grounded. The third end of the first Schottky diode D1 is connected to the clock module KT of the computer body 10.

[0028] The positive electrode of the rechargeable battery Q2 is connected to the first pin of the first Schottky diode D1, the negative electrode of the rechargeable battery Q2 is connected to the ground, the positive electrode of the second Schottky diode D2 is connected to the positive electrode of the power battery Q1, the negative electrode of the second Schottky diode D2 is connected to the current limiting resistor R, and the other pin of the current limiting resistor R is connected to the positive electrode of the rechargeable battery Q2.

[0029] The switching circuit includes a first Schottky diode D1. This is a common-cathode bidirectional diode consisting of two parallel diodes, one with its anode at pin 1 and the other at pin 2. The cathodes of the two diodes are connected together at pin 3. Pin 1 of the first Schottky diode D1 is connected to the positive electrode of the rechargeable battery Q2, pin 2 of the first Schottky diode D1 is connected to the power supply battery Q1, and pin 3 of the first Schottky diode D1 is connected to the clock module KT.

[0030] The working principle of the switching circuit is as follows:

[0031] The power supply battery Q1 is a 3.3V voltage converted from the battery voltage. The power supply battery Q1 is connected to the second pin of the first Schottky diode D1 and is also connected to the positive electrode of the second Schottky diode D2.

[0032] Rechargeable battery Q2 is a rechargeable button battery with a nominal voltage of 3.0V and a rechargeable cycle of 100 or more times. The positive electrode of rechargeable battery Q2 is connected to pin 1 of the first Schottky diode D1, and the negative electrode of rechargeable battery Q2 is connected to ground. Clock module KT is connected to pin 3 of the first Schottky diode D1.

[0033] When the rugged tablet is connected to a battery, the voltage at power battery Q1 is 3.3V, and the voltage at rechargeable battery Q2 is 3.0V. At this point, pin 2 of the first Schottky diode D1 is 3.3V, and pin 1 is 3.0V. Because 3.0V is lower than 3.3V, the diodes at pins 2 and 3 of the first Schottky diode D1 conduct, while the diodes at pins 1 and 3 are cut off. At this point, the power supply voltage for clock module KT is provided by the 3.3V supply voltage of power battery Q1. Simultaneously, power battery Q1 charges rechargeable battery Q2 through the second Schottky diode D2 and current-limiting resistor R.

[0034] When the rugged tablet computer is disconnected from the battery, the voltage of the power battery Q1 drops to 0V, and the voltage of the rechargeable battery Q2 is 3.0V. At this time, the second pin of the first Schottky diode D1 is 0V, and the first pin is 3.0V. Since 3.0V is greater than 0V, the diodes at pins 2 and 3 of the first Schottky diode D1 are cut off, and the diodes at pins 1 and 3 are turned on. At this time, the power supply voltage of the clock module KT is provided by the 3.0V of the rechargeable battery Q2.

[0035] It is understandable that, in this application, the wiring harness connections between the various components and the specific circuit structure of the computer body 10 belong to the prior art and will not be described in detail here.

[0036] Please refer to Figure 1 The external battery compartment 20 is disposed on the back of the computer body 10. The external battery compartment 20 has a cavity 30 for accommodating the rechargeable battery Q2. A battery cover is detachably provided on the external battery compartment 20 to seal the cavity 30. In this embodiment, the battery cover and the external battery compartment 20 can be connected by bolts or other means (such as a snap connection) to achieve opening and locking of the battery cover, allowing the battery to be directly replaced through the battery cover.

[0037] The external battery compartment 20 is provided with a conductive sealing ring 40, which is a rubber ring that is both sealing and conductive, and is used to prevent dust and water, electromagnetic leakage, and ensure protection level and electromagnetic compatibility requirements. In addition, the computer body 10 is provided with a device nameplate to display device information.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A reinforced tablet computer with a replaceable battery, characterized in that: The reinforced tablet computer with a replaceable battery comprises a computer body (10) and an external battery compartment (20) arranged on the computer body (10); a power battery (Q1) is provided inside the computer body (10); a rechargeable battery (Q2) is provided inside the external battery compartment (20); both the power battery (Q1) and the rechargeable battery (Q2) can supply power to a clock module (KT) of the computer body (10); a switching circuit is provided on a circuit board of the computer body (10); the switching circuit is connected to the power battery (Q1) and the rechargeable battery (Q2) at the same time; the switching circuit is used to switch the rechargeable battery (Q2) to supply power to the clock module (KT) when the voltage of the power battery (Q1) is lower than the voltage of the rechargeable battery (Q2).

2. The reinforced tablet computer with replaceable battery according to claim 1, characterized in that: The switching circuit comprises a first Schottky diode (D1) and a second Schottky diode (D2), wherein the first end and the second end of the second Schottky diode (D2) are respectively connected to the power battery (Q1) and the first end of the rechargeable battery (Q2), the first end of the rechargeable battery (Q2) is also connected to the first end of the first Schottky diode (D1), the power battery (Q1) is also connected to the second end of the first Schottky diode (D1), and the second end of the rechargeable battery (Q2) is grounded.

3. The reinforced tablet computer with replaceable battery according to claim 2, characterized in that: The third end of the first Schottky diode (D1) is connected to the clock module (KT) of the computer body (10).

4. The reinforced tablet computer with replaceable battery according to claim 2, characterized in that: The switching circuit further includes a current limiting resistor (R) connected between the second Schottky diode (D2) and the rechargeable battery (Q2).

5. The reinforced tablet computer with replaceable battery according to claim 1, characterized in that: The external battery compartment (20) is arranged on the back of the computer body (10).

6. The reinforced tablet computer with replaceable battery according to claim 5, characterized in that: The external battery compartment (20) has a cavity (30) for accommodating the rechargeable battery (Q2).

7. The reinforced tablet computer with replaceable battery according to claim 6, characterized in that: The external battery compartment (20) is detachably provided with a battery cover capable of closing the cavity (30).

8. The reinforced tablet computer with replaceable battery according to claim 6, characterized in that: A conductive sealing ring (40) is provided on the external battery compartment (20).

9. The reinforced tablet computer with replaceable battery according to claim 7, characterized in that: The battery cover and the external battery compartment (20) are connected by bolts or by snaps.

10. The reinforced tablet computer with replaceable battery according to any one of claims 1 to 9, characterized in that: The computer body (10) is provided with a device nameplate.

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