Power supply equipment
By employing a ping-pong power supply scheme involving a charging module and a power switching module, and utilizing the stable voltage output through electrochemical reactions, the problem of high cost in noise control for switching power supplies is solved. This enables stable power supply for high-precision sensors and data acquisition devices, thereby reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI FASHION TECH
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-21
AI Technical Summary
In existing technologies, when high-precision sensors and data acquisition devices are powered by switching power supplies, noise control costs are high and the noise source cannot be actively controlled.
By employing a charging module and a power supply switching module, and using the first and second rechargeable batteries in a ping-pong manner to provide power, the system utilizes the stable voltage output from the electrochemical reaction. Combined with the charging and power supply switching modules, the system controls the connection between the battery and the load, thereby achieving active control of the noise source.
It reduces power supply noise, improves the accuracy and stability of monitoring data, avoids the need for software or hardware updates, and reduces costs.
Smart Images
Figure CN224153974U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering measurement technology, and in particular to a power supply device. Background Technology
[0002] In certain scenarios or needs within the field of structural safety monitoring, the measurement accuracy requirements for sensors and acquisition equipment are often extremely high, particularly in critical applications such as precision electronic scales, tilt monitoring, microseismic monitoring, and high-precision strain measurement. This is because even the smallest measurement error can lead to a deviation in the assessment of structural safety, thereby triggering potential safety hazards.
[0003] To meet these high-precision requirements, various strategies are typically employed to improve the performance of sensors and acquisition devices, such as using higher-precision sensing elements to enhance measurement accuracy, increasing the number of bits in the analog-to-digital converter (ADC), and removing random noise and other interference signals through digital filtering.
[0004] Sensors and data acquisition devices are typically powered by switching power supplies. During the switching process, the power supply generates high-frequency interference, which can seriously affect the normal operation of high-precision equipment. Although the above methods can reduce noise to some extent, the investment in software and hardware will increase costs, and it is impossible to actively control the noise at the source of the noise, namely the noise generated at the switching power supply. Utility Model Content
[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a power supply device that solves the technical problem that when powering high-precision sensors and acquisition devices with switching power supplies, noise control using traditional methods not only increases costs but also fails to actively control the noise generated at the switching power supply.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0007] A power supply device includes a charging module, wherein the charging module is electrically connected to a first rechargeable battery and a second rechargeable battery respectively via a charging switching module, and the charging switching module is used to connect the charging module to the first rechargeable battery or the second rechargeable battery. The first rechargeable battery and the second rechargeable battery are both electrically connected to a load via a power supply switching module, and the power supply switching module is used to connect the first rechargeable battery or the second rechargeable battery to the load.
[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: By using the first rechargeable battery or the second rechargeable battery to power the load, the output voltage of the battery is relatively stable compared with the power supply of a switching power supply, and the current is directly generated by the electrochemical reaction, effectively reducing power supply noise; by setting the charging switching module and the power supply switching module, when the high-precision sensor or acquisition device is continuously powered, the first rechargeable battery is connected to the load, and the second rechargeable battery is disconnected from the load. At the same time, the charging module is disconnected from the first rechargeable battery and connected to the second rechargeable battery. When the first rechargeable battery is powered, the second rechargeable battery is charged. When the first rechargeable battery is powered, the second rechargeable battery is charged. When the power supply decreases, the charging module is connected to the first rechargeable battery, and the connection between the first rechargeable battery and the load is disconnected. Simultaneously, the connection between the charging module and the second rechargeable battery is disconnected, and the second rechargeable battery is connected to the load. The second rechargeable battery supplies power to the load and charges the first rechargeable battery. This avoids the charging module being simultaneously connected to the load when either the first or second rechargeable battery is being charged, further reducing power supply noise. This achieves a ping-pong power supply. Through the above method, while actively controlling the noise source and improving the accuracy and stability of monitoring data, the need for software or hardware updates is avoided, thus reducing costs.
[0009] Furthermore, the charging switching module includes a first charging switch and a second charging switch. The charging module is electrically connected to the first rechargeable battery through the first charging switch, and the charging module is electrically connected to the second rechargeable battery through the second charging switch.
[0010] Furthermore, the power supply switching module includes a first power supply switch and a second power supply switch. The first rechargeable battery is electrically connected to the load through the first power supply switch, and the second rechargeable battery is electrically connected to the load through the second power supply switch.
[0011] Furthermore, the charging module includes a charging management chip U1, the first rechargeable battery is battery BAT-A, the second rechargeable battery is battery BAT-B, the first charging switch is relay RL1, the second charging switch is relay RL3, the eighth pin of U1 is electrically connected to the fourth pin of relay RL1 and the fourth pin of relay RL3, the third pin of relay RL1 is electrically connected to battery BAT-A, and the third pin of relay RL3 is electrically connected to battery BAT-B.
[0012] Furthermore, a Schottky diode D12 is disposed between the eighth pin of the charging management chip U1 and the fourth pin of the relay RL1, and a Schottky diode D13 is disposed between the eighth pin of the charging management chip U1 and the fourth pin of the relay RL3.
[0013] Furthermore, the first power supply switch is a relay RL2, the second power supply switch is a relay RL4, the first rechargeable battery is electrically connected to the fourth pin of the relay RL2, the second rechargeable battery is electrically connected to the fourth pin of the relay RL4, and the third pins of both the relay RL2 and the relay RL4 are electrically connected to the load.
[0014] Furthermore, a P-channel transistor T1 is disposed between the third pin of the relay RL2 and the load, and a P-channel transistor T2 is disposed between the third pin of the relay RL4 and the load. The third pin of the relay RL2 is electrically connected to the drain of the P-channel transistor T1 and the gate of the P-channel transistor T2, respectively. The source of the P-channel transistor T1 is electrically connected to the load. The third pin of the relay RL4 is electrically connected to the drain of the P-channel transistor T2 and the gate of the P-channel transistor T1, respectively. The source of the P-channel transistor T2 is electrically connected to the load.
[0015] Furthermore, both the first and second rechargeable batteries are electrically connected to a power detection module via an analog switch. The power detection module is electrically connected to a microcontroller, which is in turn connected to the charging switching module and the power supply switching module. The microcontroller is also electrically connected to the analog switch to control the analog switch to connect either the first or second rechargeable battery to the power detection module. Attached Figure Description
[0016] Figure 1 This is a structural block diagram of the power supply equipment in an embodiment of this utility model;
[0017] Figure 2 This is a connection circuit diagram of the charging module and charging switching module in the power supply equipment of this utility model embodiment;
[0018] Figure 3 This is a circuit diagram of the power supply switching module in the power supply equipment in this embodiment of the utility model;
[0019] Explanation of key component symbols:
[0020] 1. Charging module; 2. Charging switching module; 3. First rechargeable battery; 4. Second rechargeable battery; 5. Power supply switching module; 6. Analog switch; 7. Power detection module; 8. Load; 9. Microcontroller.
[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation
[0022] To facilitate understanding of this utility model, a more complete description of it will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.
[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0025] Please see Figures 1 to 3 The power supply device in this embodiment of the present invention includes a charging module 1. The charging module 1 is electrically connected to a first rechargeable battery 3 and a second rechargeable battery 4 through a charging switching module 2. In this embodiment, the first rechargeable battery 3 and the second rechargeable battery 4 are both lithium batteries or storage batteries. The charging switching module 2 is used to connect the charging module 1 to the first rechargeable battery 3 or the second rechargeable battery 4. Specifically, the charging switching module 2 includes a first charging switch and a second charging switch. The charging module 1 is electrically connected to the first rechargeable battery 3 through the first charging switch, and the charging module 1 is electrically connected to the second rechargeable battery 4 through the second charging switch.
[0026] The charging module 1 includes a charging management chip U1, the first rechargeable battery 3 is battery BAT-A, the second rechargeable battery 4 is battery BAT-B, the first charging switch is relay RL1, the second charging switch is relay RL3, the eighth pin of U1 is electrically connected to the fourth pin of relay RL1 and the fourth pin of relay RL3, the third pin of relay RL1 is electrically connected to battery BAT-A, and the third pin of relay RL3 is electrically connected to battery BAT-B. Understandably, diode Q1, resistor R2 and resistor R3 form the driving circuit of relay RL1, and diode Q3, resistor R10 and resistor R11 form the driving circuit of relay RL3. A Schottky diode D12 is disposed between the eighth pin of the charging management chip U1 and the fourth pin of the relay RL1, and a Schottky diode D13 is disposed between the eighth pin of the charging management chip U1 and the fourth pin of the relay RL3. The Schottky diodes D12 and D13 are used to prevent the first rechargeable battery 3 and the second rechargeable battery 4 from being reverse-energized when both are simultaneously turned on during the charging switching process.
[0027] Both the first rechargeable battery 3 and the second rechargeable battery 4 are electrically connected to the load 8 via the power supply switching module 5. In this embodiment, the load 8 is a high-precision sensor or acquisition device. The power supply switching module 5 is used to connect either the first rechargeable battery 3 or the second rechargeable battery 4 to the load 8. By using the first rechargeable battery 3 or the second rechargeable battery 4 to power the load 8, the output voltage of the battery is relatively stable compared to a switching power supply, and the current is directly generated by the electrochemical reaction, effectively reducing power supply noise. By setting the charging switching module 2 and the power supply switching module 5, when the high-precision sensor or acquisition device is continuously powered, the first rechargeable battery 3 is connected to the load 8, and the second rechargeable battery 4 is disconnected from the load 8. At the same time, the charging module 1 is disconnected from the first rechargeable battery 3 and connected to the second rechargeable battery 4. When the first rechargeable battery 3 is supplying power, the second rechargeable battery 4 is charged. When the charge of the first rechargeable battery 3 decreases, the charging module 1 is connected to the second rechargeable battery 4. Module 1 is connected to the first rechargeable battery 3 and disconnected from the load 8. Simultaneously, the connection between the charging module 1 and the second rechargeable battery 4 is disconnected, and the second rechargeable battery 4 is connected to the load 8. The second rechargeable battery supplies power to the load 8 and charges the first rechargeable battery 3. This avoids the charging module 1 from simultaneously connecting to the load 8 when the first rechargeable battery 3 or the second rechargeable battery 4 is being charged, further reducing power supply noise. This achieves a ping-pong power supply. Through the above method, while actively controlling the noise source and improving the accuracy and stability of monitoring data, the need for software or hardware updates is avoided, thus reducing costs.
[0028] The power supply switching module 5 includes a first power supply switch and a second power supply switch. The first rechargeable battery 3 is electrically connected to the load 8 through the first power supply switch, and the second rechargeable battery 4 is electrically connected to the load 8 through the second power supply switch. Specifically, the first power supply switch is a relay RL2, and the second power supply switch is a relay RL4. The first rechargeable battery 3 is electrically connected to the fourth pin of the relay RL2, and the second rechargeable battery 4 is electrically connected to the fourth pin of the relay RL4. The third pins of both the relay RL2 and the relay RL4 are electrically connected to the load 8. It can be understood that diode Q2, resistor R4, and resistor R6 constitute the driving circuit of the relay RL2, and diode Q4, resistor R12, and resistor R13 constitute the driving circuit of the relay RL4.
[0029] A P-channel transistor T1 is disposed between the third pin of relay RL2 and the load 8, and a P-channel transistor T2 is disposed between the third pin of relay RL4 and the load 8. The third pin of relay RL2 is electrically connected to the drain of P-channel transistor T1 and the gate of P-channel transistor T2, respectively. The source of P-channel transistor T1 is electrically connected to the load 8. The third pin of relay RL4 is electrically connected to the drain of P-channel transistor T2 and the gate of P-channel transistor T1, respectively. The source of P-channel transistor T2 is electrically connected to the load 8. The P-channel transistors T1 and T2 are used to ensure seamless timing switching between the first rechargeable battery 3 and the second rechargeable battery 4 during power supply switching, ensuring the continuity of power transition. For example, when the first rechargeable battery 3 supplies power to the load 8 through the first power supply switch, and it is necessary to switch the second rechargeable battery 4 to supply power to the load 8 through the second power supply switch, the connection between the first rechargeable battery 3 and the load 8 is not disconnected. Simultaneously, the second rechargeable battery 4 is connected to the load 8 through the second power supply switch. Since the gate of the P-channel transistor T2 has a voltage from the first rechargeable battery 3 at this time, the P-channel transistor T2 is not conducting. The second rechargeable battery 4 is connected to the load 8 through the P-channel transistor T2, and at the same time, the voltage of the second rechargeable battery 4 is applied to the gate of the P-channel transistor T1, causing the P-channel transistor T1 to not conduct. However, the first rechargeable battery 3 can be applied to the load 8 through the P-channel transistor T1. Within this very short time, the load 8 achieves power continuity during the switching process between the first rechargeable battery 3 and the second rechargeable battery 4. After this switching time, the first power supply switch is disconnected, and the first rechargeable battery 3 is connected to the charging module 1. Similarly, the same working logic is followed during the next switch to ensure seamless power switching.
[0030] Both the first rechargeable battery 3 and the second rechargeable battery 4 are electrically connected to the power detection module 7 via an analog switch 6. The analog switch 6 is a two-to-one analog signal switching switch, an optocoupler, or a signal relay. The power detection module 7 is electrically connected to the microcontroller 9. Since precise battery power detection is not required, the power detection module 7 uses a voltage method to estimate the battery power. That is, it obtains the battery voltage value through a voltage divider sampling circuit and an analog-to-digital converter, and then obtains the current battery power value according to the battery discharge curve. It should be noted that in order to accurately detect the battery voltage, the battery to be measured can be temporarily disconnected from the battery charging circuit and the battery's open-circuit voltage can be directly sampled. The microcontroller 9 is electrically connected to the charging switching module 2 and the power supply switching module 5, and is also electrically connected to the analog switch 6 to control the analog switch 6 to make the first rechargeable battery 3 or the second rechargeable battery 4 conduct with the power detection module 7. It can be understood that after the microcontroller 9 obtains the power detection result of the first rechargeable battery 3 or the second rechargeable battery 4, it controls the first rechargeable battery 3 or the second rechargeable battery 4 to conduct with the charging module 1 for charging, and controls the first rechargeable battery 3 or the second rechargeable battery 4 to supply power to the load 8.
[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0032] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A power supply device, characterized by comprising: The device includes a charging module, which is electrically connected to a first rechargeable battery and a second rechargeable battery respectively via a charging switching module. The charging switching module is used to connect the charging module to either the first rechargeable battery or the second rechargeable battery. Both the first rechargeable battery and the second rechargeable battery are electrically connected to a load via a power supply switching module, which is used to connect either the first rechargeable battery or the second rechargeable battery to the load.
2. The power supply device according to claim 1, wherein The charging switching module includes a first charging switch and a second charging switch. The charging module is electrically connected to the first rechargeable battery through the first charging switch, and the charging module is electrically connected to the second rechargeable battery through the second charging switch.
3. The power supply device according to claim 1, wherein The power supply switching module includes a first power supply switch and a second power supply switch. The first rechargeable battery is electrically connected to the load through the first power supply switch, and the second rechargeable battery is electrically connected to the load through the second power supply switch.
4. The power supply device according to claim 2, wherein The charging module includes a charging management chip U1, the first rechargeable battery is battery BAT-A, the second rechargeable battery is battery BAT-B, the first charging switch is relay RL1, the second charging switch is relay RL3, the eighth pin of U1 is electrically connected to the fourth pin of relay RL1 and the fourth pin of relay RL3, the third pin of relay RL1 is electrically connected to battery BAT-A, and the third pin of relay RL3 is electrically connected to battery BAT-B.
5. The power supply device according to claim 4, wherein A Schottky diode D12 is disposed between the eighth pin of the charging management chip U1 and the fourth pin of the relay RL1, and a Schottky diode D13 is disposed between the eighth pin of the charging management chip U1 and the fourth pin of the relay RL3.
6. The power supply device according to claim 3, wherein The first power supply switch is a relay RL2, the second power supply switch is a relay RL4, the first rechargeable battery is electrically connected to the fourth pin of the relay RL2, the second rechargeable battery is electrically connected to the fourth pin of the relay RL4, and the third pins of both the relay RL2 and the relay RL4 are electrically connected to the load.
7. The power supply device according to claim 6, wherein A P-channel transistor T1 is disposed between the third pin of relay RL2 and the load, and a P-channel transistor T2 is disposed between the third pin of relay RL4 and the load. The third pin of relay RL2 is electrically connected to the drain of P-channel transistor T1 and the gate of P-channel transistor T2, respectively. The source of P-channel transistor T1 is electrically connected to the load. The third pin of relay RL4 is electrically connected to the drain of P-channel transistor T2 and the gate of P-channel transistor T1, respectively. The source of P-channel transistor T2 is electrically connected to the load.
8. The powered device of claim 1, wherein, Both the first rechargeable battery and the second rechargeable battery are electrically connected to a power detection module via an analog switch. The power detection module is electrically connected to a microcontroller. The microcontroller is electrically connected to the charging switching module and the power supply switching module, and the microcontroller is also electrically connected to the analog switch to control the analog switch to connect the first rechargeable battery or the second rechargeable battery to the power detection module.