Impact-resistant power supply holding circuit, telescope and observation equipment

Abstract

The utility model relates to an anti-impact power supply holding circuit, a telescope and observation equipment wherein the anti-impact power supply holding circuit comprises a main power supply, a conversion module, a switch module and an auxiliary power supply which are arranged in a battery compartment; the main power supply is connected with the positive electrode contact and the negative electrode contact in the battery compartment and is used for supplying power to an external load; the auxiliary power supply is connected with an external load through the switch module. And the conversion module is respectively connected with the main power supply, the auxiliary power supply and the switch module and is used for controlling the switch module to be switched on when the main power supply is detected to be powered down so as to switch to the auxiliary power supply to supply power to the external load. According to the utility model, while power supply holding is realized, the conversion module is utilized to realize reverse connection prevention of two power supplies, so that the miniaturization requirement of the circuit is met; the problem that in the prior art, a dual-power-supply anti-reverse-connection circuit structure needs to be designed, and the miniaturization requirement of the circuit cannot be met is solved.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and in particular to an impact-resistant power holding circuit, a telescope, and an observation device. Background Technology

[0002] In observation equipment with replaceable batteries, the batteries are housed inside the battery compartment. The batteries are connected via two terminals (positive and negative) inside the compartment to supply power to the equipment. During use, if the batteries lose power due to impacts or other reasons, it will affect the normal operation of the equipment. Therefore, a power retention circuit needs to be designed to address this issue.

[0003] Current power supply backup circuits include a main power supply, a secondary power supply, and a dual power management circuit. Under the control of the dual power management circuit, both the main and secondary power supplies simultaneously power the load. Therefore, when the main power supply fails, the secondary power supply continues to provide power. The drawback of this approach is that it requires designing a reverse connection protection circuit within the dual power management circuit, which makes it impossible to meet the miniaturization requirements of the circuit.

[0004] Currently, no effective solution has been proposed to address the issue that related technologies require the design of dual-power supply anti-reverse connection circuit structures, which makes it impossible to meet the miniaturization requirements of the circuits. Utility Model Content

[0005] In view of this, it is necessary to provide a shock-resistant power holding circuit, telescope and observation equipment to at least solve the problem that the related technology requires the design of a dual power supply anti-reverse connection circuit structure, which cannot meet the miniaturization requirements of the circuit.

[0006] In a first aspect, this utility model provides an impact-resistant power holding circuit, including a main power supply, a conversion module, a switching module and an auxiliary power supply disposed in the battery compartment;

[0007] The main power supply is connected to the positive and negative contacts in the battery compartment and is used to supply power to external loads.

[0008] The auxiliary power supply is connected to the external load through the switching module;

[0009] The conversion module is connected to the main power supply, the auxiliary power supply and the switch module respectively, and is used to control the switch module to turn on when the main power supply fails, so as to switch the auxiliary power supply to supply power to the external load.

[0010] In one embodiment, the secondary power source is capacitor C1;

[0011] The positive terminal of capacitor C1 is connected to both the conversion module and the switching module; the negative terminal of capacitor C1 is grounded.

[0012] In one embodiment, the conversion module includes a power chip U1, resistors R1, R2, and R3, an inductor L1, and a feedback unit.

[0013] Pin 1 of the power chip U1 is connected to the positive contact, one end of resistor R1, and one end of resistor R3; pin 2 of the power chip U1 is connected to the other end of resistor R1; pin 3 of the power chip U1 serves as the output terminal and is connected to the other end of inductor L1 and the feedback unit; pin 4 of the power chip U1 is connected to the feedback unit; pin 5 of the power chip U1 is grounded through resistor R2; pin 6 of the power chip U1 is connected to the other end of resistor R3; pin 8 of the power chip U1 is connected to one end of inductor L1; pins 7 and 9 of the power chip U1 are grounded.

[0014] In one embodiment, the feedback unit includes resistors R4 and R5;

[0015] One end of the resistor R4 is connected to pin 3 of the power chip U1 and the other end of the inductor L1, respectively.

[0016] The other end of resistor R4 is connected to pin 4 of power chip U1 and one end of resistor R5, respectively.

[0017] The other end of the resistor R5 is grounded.

[0018] In one embodiment, the conversion module further includes capacitors C2 and C3;

[0019] The positive terminal of capacitor C2 is connected to the positive contact; the negative terminal of capacitor C2 is grounded.

[0020] The positive terminal of capacitor C3 is connected to pin 3 of power chip U1; the negative terminal of capacitor C3 is grounded.

[0021] In one embodiment, the power holding circuit further includes a voltage divider unit;

[0022] The voltage divider unit is disposed between the conversion module and the auxiliary power supply.

[0023] In one embodiment, the switching module is one of a field-effect transistor, a transistor, and a unidirectional power switch.

[0024] In one embodiment, the power switch includes a switch chip U2 and a resistor R6;

[0025] The first pin of the switch chip U2 is connected to the positive contact; the second pin of the switch chip U2 is grounded; the fourth pin of the switch chip U2 is connected to the other end of the resistor R6; and the fifth pin of the switch chip U2 is connected to one end of the resistor R6, the auxiliary power supply, and the conversion module.

[0026] In a second aspect, embodiments of this application provide a telescope including a shock-resistant power holding circuit as described in the first aspect above.

[0027] In a third aspect, an observation device provided in this application includes a shock-resistant power holding circuit as described in the first aspect above.

[0028] This utility model provides an impact-resistant power holding circuit, a telescope, and an observation device. The impact-resistant power holding circuit includes a main power supply, a conversion module, a switching module, and an auxiliary power supply, all housed in a battery compartment. The main power supply is connected to the positive and negative contacts in the battery compartment and supplies power to an external load. The auxiliary power supply is connected to the external load via the switching module. The conversion module is connected to the main power supply, the auxiliary power supply, and the switching module, and controls the switching module to conduct when a main power failure is detected, switching to the auxiliary power supply to power the external load. This application utilizes the cooperation of the conversion module and the switching module to control the switching module to conduct when a main power failure is detected, switching to the auxiliary power supply to power the external load, thus achieving power holding. Furthermore, the conversion module provides reverse connection protection for the two power supplies, meeting the miniaturization requirements of the circuit. This solves the problem in related technologies where a dual-power reverse connection protection circuit structure is required, making it impossible to meet the miniaturization requirements of the circuit. Attached Figure Description

[0029] Figure 1 A structural block diagram of an impact-resistant power holding circuit provided in an embodiment of the present invention;

[0030] Figure 2 A circuit diagram of a conversion module provided in an embodiment of this utility model;

[0031] Figure 3 A circuit diagram of a switching module provided in an embodiment of this utility model;

[0032] Figure 4 A circuit diagram of an impact-resistant power holding circuit provided in a preferred embodiment of this utility model.

[0033] Reference numerals: 10, main power supply; 20, conversion module; 30, auxiliary power supply; 40, switch module. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application. Furthermore, it is understood that although the efforts made in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, modifications to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0035] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0036] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. When an element is referred to as being "located" on another element, it may be directly disposed on the other element or may have an intervening element. When an element is considered to be "disposed on" another element, it may be directly disposed on the other element or may have an intervening element present. When an element is considered to be "fixed to" another element, it may be directly fixed to the other element or may have an intervening element present. The terms "first," "second," "third," etc., used in this application are merely to distinguish similar objects and do not represent a specific order of objects. The terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] Please see Figure 1 This utility model provides an impact-resistant power holding circuit, including a main power supply 10, a conversion module 20, a switching module 40 and an auxiliary power supply 30 disposed in the battery compartment;

[0038] The main power supply 10 is connected to the positive and negative contacts in the battery compartment and is used to supply power to external loads.

[0039] The auxiliary power supply 30 is connected to an external load via the switching module 40;

[0040] The conversion module 20 is connected to the main power supply 10, the auxiliary power supply 30 and the switch module 40 respectively. When the main power supply 10 is detected to be out of power, the switch module 40 is turned on to switch the auxiliary power supply 30 to supply power to the external load.

[0041] Specifically, the main power supply 10 is located in the battery compartment, which has positive and negative contacts. The positive terminal of the main power supply 10 contacts the positive contact, and the negative terminal contacts the negative contact. To replace the main power supply 10, simply remove it from the battery compartment and replace it with a new one.

[0042] The auxiliary power supply 30 is non-removable. During the normal process of the main power supply 10 supplying power to the external load, the main power supply 10 can charge the auxiliary power supply 30 through the conversion module 20, so that the auxiliary power supply 30 is fully charged. At this time, due to the influence of the switch module 40 (normally disconnected), the auxiliary power supply 30 is isolated and will not supply power to the external load.

[0043] If the battery compartment is impacted, causing the main power supply 10 to disconnect from the (positive or negative contact), resulting in a power outage, the conversion module 20 will detect the power outage and control the switch module 40 to turn on, allowing the auxiliary power supply 30 to switch on and supply power to the external load. The main power supply 10 will then rebound and continue supplying power to the external load. The controller will then control the switch module 40 to disconnect the auxiliary power supply 30, and the main power supply 10 will continue to charge the auxiliary power supply 30 through the conversion module 20. This process repeats to maintain power supply. This embodiment features a simple circuit structure, reduces hardware costs, and ensures reliable operation.

[0044] This embodiment provides an impact-resistant power holding circuit, comprising a main power supply 10, a conversion module 20, a switching module 40, and an auxiliary power supply 30, all housed in the battery compartment. The main power supply 10 is connected to the positive and negative contacts in the battery compartment and is used to supply power to an external load. The auxiliary power supply 30 is connected to the external load via the switching module 40. The conversion module 20 is connected to the main power supply 10, the auxiliary power supply 30, and the switching module 40, respectively, and is used to control the switching module 40 to conduct when a power failure of the main power supply 10 is detected, switching to the auxiliary power supply 30 to supply power to the external load. This application utilizes the cooperation of the conversion module 20 and the switching module 40 to control the switching module 40 to conduct when a power failure of the main power supply 10 is detected, switching to the auxiliary power supply 30 to supply power to the external load, thus achieving power holding. The conversion module is used to prevent reverse connection of the two power supplies, eliminating the need for a separate reverse charging protection circuit for both power supplies, thereby meeting the miniaturization requirements of the circuit and reducing hardware costs. This solves the problem in related technologies where a dual-power supply reverse connection protection circuit structure is required, making it impossible to meet the miniaturization requirements of the circuit.

[0045] The following is combined Figure 4 The circuit diagram of the preferred embodiment is shown below, and the above-mentioned components are described in detail:

[0046] In one embodiment, the secondary power supply is capacitor C1;

[0047] The positive terminal of capacitor C1 is connected to both the conversion module and the switching module; the negative terminal of capacitor C1 is grounded.

[0048] Specifically, capacitor C1 can be a farad capacitor. Farad capacitors, also known as electric double-layer capacitors, gold capacitors, or supercapacitors, store energy by polarizing the electrolyte without undergoing a chemical reaction. Furthermore, the energy storage process is reversible, allowing for hundreds of thousands of charge-discharge cycles. In other embodiments, the secondary power supply can be implemented using other electronic devices; there are no restrictions on this.

[0049] When the main power supply is working normally, it charges capacitor C1; when the main power supply stops supplying power due to impact or other reasons, capacitor C1 discharges to supply power to the external load; when the main power supply rebounds, it continues to supply power to the external load, the controller controls the switching module to disconnect the power supply to capacitor C1, and the main power supply continues to charge capacitor C1 through the conversion module, and so on.

[0050] This embodiment reduces hardware costs and ensures operational stability.

[0051] In one embodiment, combined with Figure 2 The conversion module includes a power chip U1, resistors R1, R2, and R3, an inductor L1, and a feedback unit.

[0052] Pin 1 of power chip U1 is connected to the positive contact, one end of resistor R1, and one end of resistor R3; pin 2 of power chip U1 is connected to the other end of resistor R1; pin 3 of power chip U1 serves as the output terminal and is connected to the other end of inductor L1 and the feedback unit; pin 4 of power chip U1 is connected to the feedback unit; pin 5 of power chip U1 is grounded through resistor R2; pin 6 of power chip U1 is connected to the other end of resistor R3; pin 8 of power chip U1 is connected to one end of inductor L1; pins 7 and 9 of power chip U1 are grounded.

[0053] Specifically, the power chip U1 can step down the main power supply voltage to charge the auxiliary power supply, thus differentiating the supply voltages of the main and auxiliary power supplies and enabling the counting of power outages of the main power supply. V_C is the output voltage of the conversion module; VBAT is the voltage at the positive contact.

[0054] The main power supply voltage is connected to pin 6 of power chip U1 via resistor R3, pulling up the enable pin (pin 6) of power chip U1 and activating power chip U1 to output voltage at pin 3. Pin 5 of power chip U1 is used to set its mode; in this embodiment, pin 5 of power chip U1 is grounded via resistor R2, thereby pulling down pin 5 of power chip U1 to configure power chip U1 in operating mode. The main power supply voltage is connected to pin 2 of power chip U1 via resistor R1, pulling up the power detection pin of power chip U1. Therefore, when the main power supply is abnormal, pin 2 of power chip U1 will be pulled low, thus realizing power failure detection of the main power supply. Pin 8 of power chip U1 is connected to pin 3 of power chip U1 via inductor L1, which stores energy to buffer the main power supply failure. Pin 4 of power chip U1 is connected to the feedback unit to obtain the feedback voltage; and the output voltage of pin 3 is adjusted according to the feedback voltage to keep the output voltage stable at the preset voltage value.

[0055] In this embodiment, the power chip U1 and its surrounding circuitry are used to implement the conversion module, thereby reducing hardware costs.

[0056] In one embodiment, the feedback unit includes resistors R4 and R5;

[0057] One end of resistor R4 is connected to pin 3 of power chip U1 and the other end of inductor L1, respectively.

[0058] The other end of resistor R4 is connected to pin 4 of power chip U1 and one end of resistor R5; the other end of resistor R5 is grounded.

[0059] Specifically, resistors R4 and R5 form a feedback unit. Resistors R4 and R5 divide the output voltage of pin 3 of power chip U1 to obtain a feedback voltage, which is then input to pin 4 of power chip U1. This allows power chip U1 to adjust the output voltage based on the feedback voltage, maintaining a stable output voltage at a preset value. In other embodiments, the feedback unit can be implemented using other electronic devices; there are no limitations on this.

[0060] In this embodiment, a feedback unit is formed by resistors R4 and R5, which simplifies the circuit complexity.

[0061] In one embodiment, the conversion module further includes capacitors C2 and C3;

[0062] The positive terminal of capacitor C2 is connected to the positive contact; the negative terminal of capacitor C2 is grounded.

[0063] The positive terminal of capacitor C3 is connected to pin 3 of power chip U1; the negative terminal of capacitor C3 is grounded.

[0064] Specifically, capacitors C2 and C3 are both voltage regulator capacitors. Capacitor C2 is used for voltage regulation at the input stage of power supply chip U1. Capacitor C3 is used for voltage regulation at the output of power supply chip U1.

[0065] This embodiment utilizes two stages of voltage-regulating capacitors to improve operational stability.

[0066] In one embodiment, the power holding circuit further includes a voltage divider unit;

[0067] The voltage divider unit is located between the conversion module and the auxiliary power supply.

[0068] Specifically, to protect capacitor C1, especially when C1 is a supercapacitor, a voltage divider unit is installed in front of it to limit the current. The voltage divider unit can be a resistor R4.

[0069] In one embodiment, the switching module is one of a field-effect transistor, a transistor, and a unidirectional power switch.

[0070] Specifically, the switching module can be one of the following: a field-effect transistor, a transistor, or a unidirectional power switch, to suit different application scenarios. The switching module takes different forms, allowing for adjustments to the corresponding circuit connections; examples will not be provided here.

[0071] In one embodiment, combined with Figure 3 The power switch includes a switch chip U2 and a resistor R6;

[0072] Pin 1 of switch chip U2 is connected to the positive contact; pin 2 of switch chip U2 is grounded; pin 4 of switch chip U2 is connected to the other end of resistor R6; pin 5 of switch chip U2 is connected to one end of resistor R6, the auxiliary power supply, and the conversion module.

[0073] Specifically, V_C is the output voltage of the conversion module; VBAT is the voltage at the positive contact. The positive terminal of the auxiliary power supply is connected to pin 4 of the switching chip U2 through resistor R6, pulling up the enable of the switching chip U2 to start the power switch U2; this causes pin 1 (output pin) of the switching chip U2 to output voltage to the positive contact; thus, the auxiliary power supply can be switched to supply power to the external load. It can be considered that when the main power supply voltage drops below V_C, the auxiliary power supply is switched on, and the auxiliary power supply outputs to the positive contact through the power switch U2, acting as a secondary power supply.

[0074] In this embodiment, a power switch is implemented using a switch chip U2 and a resistor R6, thereby reducing hardware costs.

[0075] In addition, by combining the shock-resistant power holding circuit in the above embodiments, this application embodiment can provide a telescope to achieve this.

[0076] The telescope includes any of the shock-resistant power holding circuits described in the above embodiments.

[0077] In addition, by combining the shock-resistant power holding circuit in the above embodiments, this application embodiment can provide an observation device to achieve this.

[0078] The observation device includes any of the shock-resistant power holding circuits described in the above embodiments.

[0079] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A shock-resistant power supply holding circuit, characterized in that, This includes the main power supply, conversion module, switching module, and auxiliary power supply, all housed in the battery compartment. The main power supply is connected to the positive and negative contacts in the battery compartment and is used to supply power to external loads. The auxiliary power source is capacitor C1. The positive terminal of capacitor C1 is connected to both the conversion module and the switching module. The negative terminal of capacitor C1 is grounded. When the main power source is working normally, capacitor C1 is charged. When the main power source stops supplying power due to an impact or other reasons, capacitor C1 discharges to supply power to the external load. The auxiliary power supply is connected to the external load through the switching module; The conversion module is connected to the main power supply, the auxiliary power supply and the switch module respectively, and is used to control the switch module to turn on when the main power supply fails, so as to switch the auxiliary power supply to supply power to the external load. The conversion module includes a power chip U1, resistors R1, R2, and R3, an inductor L1, and a feedback unit. Pin 1 of power chip U1 is connected to the positive contact, one end of resistor R1, and one end of resistor R3; pin 2 of power chip U1 is connected to the other end of resistor R1; pin 3 of power chip U1 serves as the output terminal and is connected to the other end of inductor L1 and the feedback unit; pin 4 of power chip U1 is connected to the feedback unit; pin 5 of power chip U1 is grounded through resistor R2; pin 6 of power chip U1 is connected to the other end of resistor R3; pin 8 of power chip U1 is connected to one end of inductor L1; pins 7 and 9 of power chip U1 are grounded. The feedback unit includes resistors R4 and R5; One end of the resistor R4 is connected to pin 3 of the power chip U1 and the other end of the inductor L1, respectively. The other end of resistor R4 is connected to pin 4 of power chip U1 and one end of resistor R5, respectively. The other end of the resistor R5 is grounded.

2. The shock-resistant power supply holding circuit according to claim 1, characterized in that, The conversion module also includes capacitors C2 and C3; The positive terminal of capacitor C2 is connected to the positive contact; the negative terminal of capacitor C2 is grounded. The positive terminal of capacitor C3 is connected to pin 3 of power chip U1; the negative terminal of capacitor C3 is grounded.

3. The shock-resistant power supply holding circuit according to claim 1, characterized in that, The power supply holding circuit also includes a voltage divider unit; The voltage divider unit is disposed between the conversion module and the auxiliary power supply.

4. The shock-resistant power supply holding circuit according to claim 1, characterized in that, The switching module is one of a field-effect transistor, a transistor, or a unidirectional power switch.

5. The shock-resistant power supply holding circuit according to claim 4, characterized in that, The power switch includes a switch chip U2 and a resistor R6; The first pin of the switch chip U2 is connected to the positive contact; the second pin of the switch chip U2 is grounded; the fourth pin of the switch chip U2 is connected to the other end of the resistor R6; and the fifth pin of the switch chip U2 is connected to one end of the resistor R6, the auxiliary power supply, and the conversion module.

6. A telescope, characterized in that, Includes the shock-resistant power holding circuit as described in any one of claims 1 to 5.

7. An observation device, characterized in that, Includes the shock-resistant power holding circuit as described in any one of claims 1 to 5.

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