A battery power supply method, device, equipment and electromagnetic water meter system

Abstract

The application provides a battery power supply method, device, equipment and electromagnetic water meter system. Voltage information of a currently powered battery is collected, wherein the currently powered battery is one of a plurality of batteries. If it is judged that the collected voltage information is less than a first preset threshold, another battery of the plurality of batteries is switched to supply power to the system, a battery switching unit corresponding to the currently powered battery is turned off, and a battery switching unit corresponding to the switched battery is turned on, so that the voltage of the switched battery is received by a voltage conversion unit and the working voltage required by the system is output. This can prevent mutual charging between the batteries, solve the problem of safety of the traditional circuit, greatly improve the service life of the battery, and ensure that the output voltage is the working voltage required by the system through the voltage conversion unit, thereby avoiding the problem of damage to the battery caused by output of high voltage, and improving the electric energy conversion efficiency.

Description

Technical Field

[0001] This invention relates to the field of battery-powered technology, and in particular to a battery-powered method, apparatus, device, and electromagnetic water meter system. Background Technology

[0002] With technological advancements and the rapid development of water conservancy projects, battery-powered electromagnetic water meters have seen rapid growth in recent years as an emerging type of flow meter. The power supply system is a crucial component of electromagnetic water meters, providing power to the entire system.

[0003] The current battery power supply method for electromagnetic water meters is usually to use 6 lithium batteries connected in parallel, and control the 6 lithium batteries to power the entire system.

[0004] Because each lithium battery has a different voltage and internal resistance, when the voltage required by the system changes, the output voltage of each battery will generate a larger voltage difference. This means that the battery with the higher output voltage will not only provide power to the system but also to the battery with the lower voltage. This not only seriously affects the battery life but may even lead to the danger of lithium battery explosion. Summary of the Invention

[0005] This invention provides a battery-powered method, apparatus, device, and electromagnetic water meter system to solve the problem of low overall battery life caused by directly connecting multiple batteries in parallel to power the system in the prior art.

[0006] On one hand, the present invention provides a battery power supply method applied to a battery power supply system, the battery power supply system including multiple batteries, each battery being provided with a corresponding battery switching unit, the battery being connected to a voltage conversion unit through the corresponding battery switching unit;

[0007] The method includes:

[0008] Collect the voltage information of the currently powered battery, wherein the currently powered battery is one of the plurality of batteries;

[0009] Determine whether the collected voltage information is less than a first preset threshold;

[0010] If it is determined that the collected voltage information is less than the first preset threshold, then another battery among the multiple batteries is switched to power the system. The battery switching unit corresponding to the currently powered battery is turned off, and the battery switching unit corresponding to the switched battery is turned on, so as to receive the voltage of the switched battery through the voltage conversion unit and output the operating voltage required by the system.

[0011] Optionally, the system further includes a voltage acquisition unit, and each battery is connected to the voltage acquisition unit through a corresponding battery switching unit;

[0012] The process of collecting the voltage information of the currently powered battery includes:

[0013] The voltage acquisition unit collects the voltage information of the currently powered battery.

[0014] Optionally, the battery switching unit corresponding to each battery includes: a main transistor and a secondary transistor; one end of the secondary transistor is connected to the positive terminal of the corresponding battery, the other end of the secondary transistor is connected to the voltage conversion unit, the control terminal of the secondary transistor is connected to one end of the main transistor, the other end of the main transistor is connected to ground, and the end of the secondary transistor connected to the positive terminal of the battery is also connected to the control terminal of the secondary transistor through a resistor; the negative terminal of the battery is connected to ground.

[0015] The control of disconnecting the battery switching unit corresponding to the currently powered battery and turning on the battery switching unit corresponding to the switched battery includes:

[0016] The main transistor in the battery switching unit corresponding to the currently powered battery is turned off, and the main transistor in the battery switching unit corresponding to the switched battery is turned on.

[0017] Optionally, the voltage conversion unit includes a buck converter module and / or a pass-through module;

[0018] The method further includes:

[0019] When the acquired voltage information is higher than the second preset voltage, the voltage is stepped down by the step-down conversion module to output the operating voltage required by the system. The operating voltage required by the system is less than or equal to the second preset voltage and greater than the first preset voltage; and / or,

[0020] When the collected voltage information is lower than the second preset voltage, the system performs a direct-through conversion through the direct-through module and outputs the operating voltage required by the system.

[0021] Optionally, the pass-through module includes a first transistor, and the buck converter module includes a buck chip;

[0022] When the collected voltage information is higher than the second preset voltage, the step-down conversion module performs step-down conversion to output the operating voltage required by the system, including:

[0023] When the collected voltage information is higher than the second preset voltage, the first transistor is controlled to turn off and the buck chip is enabled so that the received voltage is converted to a step-down voltage through the buck chip to output the operating voltage required by the system.

[0024] When the collected voltage information is lower than the second preset voltage, the system performs a direct-through conversion through the direct-through module and outputs the operating voltage required by the system, including:

[0025] When the collected voltage information is lower than the second preset voltage, the buck chip is controlled to close and the first transistor is controlled to turn on, so that the received voltage is directly converted through the first transistor and the operating voltage required by the system is output.

[0026] Optionally, the voltage acquisition unit includes a second transistor and a sampling resistor connected in series with the second transistor;

[0027] The method further includes:

[0028] The second transistor is periodically turned on or off to periodically acquire the voltage of the currently powered battery through the sampling resistor.

[0029] Optionally, the step of periodically controlling the second transistor to turn on or off to periodically acquire the voltage of the currently powered battery through the sampling resistor includes:

[0030] Set voltage thresholds and / or usage time thresholds;

[0031] The second transistor is periodically turned on to periodically acquire the voltage of the currently powered battery through the sampling resistor;

[0032] If it is determined that the voltage of the currently powered battery is greater than the voltage threshold and / or the usage time of the currently powered battery is greater than the usage time threshold, the second transistor is controlled to disconnect.

[0033] On the other hand, the present invention provides a battery-powered device, comprising:

[0034] The acquisition module is used to acquire the voltage information of the currently powered battery, wherein the currently powered battery is one of the plurality of batteries;

[0035] The judgment module is used to determine whether the collected voltage information is less than a first preset threshold.

[0036] The control module is used to switch another battery among the multiple batteries to power the system if it is determined that the collected voltage information is less than a first preset threshold. It controls the battery switching unit corresponding to the currently powered battery to be disconnected and the battery switching unit corresponding to the switched battery to be turned on, so as to receive the voltage of the switched battery through the voltage conversion unit and output the operating voltage required by the system.

[0037] On the other hand, the present invention provides a battery-powered device, including: a memory and a processor;

[0038] Memory, used to store the processor-executable instructions;

[0039] The processor is configured to implement the battery-powered method described above.

[0040] On the other hand, the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the battery-powered method described above.

[0041] This invention provides a battery-powered method, apparatus, device, and electromagnetic water meter system. By collecting the voltage information of the currently powered battery (one of a plurality of batteries), if the collected voltage information is determined to be less than a first preset threshold, another battery from the plurality of batteries is switched to power the system. The battery switching unit corresponding to the currently powered battery is disconnected, and the battery switching unit corresponding to the switched battery is turned on. A voltage conversion unit receives the voltage of the switched battery and outputs the operating voltage required by the system. This prevents batteries from charging each other, solving the safety problems of traditional circuits and greatly improving battery life. Furthermore, by setting the voltage conversion unit, the output voltage is ensured to be the operating voltage required by the system, thus avoiding battery damage caused by high output voltage and improving energy conversion efficiency. Attached Figure Description

[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0043] Figure 1 This is a block diagram of a battery power supply system provided in an embodiment of the present invention;

[0044] Figure 2 A circuit diagram of a battery-powered system provided in an embodiment of the present invention;

[0045] Figure 3 A flowchart of a battery power supply method provided in an embodiment of the present invention;

[0046] Figure 4 A flowchart of another battery power supply method provided in an embodiment of the present invention;

[0047] Figure 5 This is a schematic diagram of the structure of a battery-powered device provided in an embodiment of the present invention;

[0048] Figure 6 This is a block diagram of a battery-powered device provided in an embodiment of the present invention.

[0049] The accompanying drawings have illustrated specific embodiments of the invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0052] To address the problems existing in current battery power supply methods, this invention designs a battery power supply method applied to a battery power supply system. The battery power supply system includes multiple batteries, each battery having a corresponding battery switching unit. The batteries are connected to a voltage conversion unit through the corresponding battery switching unit.

[0053] The core idea of ​​the battery power supply method of this invention is to set a corresponding battery switching unit for each battery, thereby enabling the system to be powered by a single battery, preventing mutual charging between batteries, solving the safety problems of traditional circuits, and also allowing multiple batteries to be used to cyclically power the system, thus greatly improving battery life. In other words, existing battery power supply methods use multiple batteries to power the system, while this invention cyclically controls a single battery to power the system, that is, always keeping only one battery switching unit in operation, which not only avoids the problem of mutual charging between batteries, but also ensures the safety of the power supply system.

[0054] Specifically, this invention sets up a corresponding battery switching unit for each battery. By collecting the voltage information of the currently powered battery and determining whether the collected voltage information is less than a first preset threshold, it determines whether to switch the power supply battery. If it is determined that the power supply battery should be switched, another battery among the multiple batteries is switched to power the system. This controls the battery switching unit corresponding to the currently powered battery to disconnect and the battery switching unit corresponding to the switched battery to connect. At the same time, considering that the power supply system's requirements may change, this invention sets up a voltage conversion unit to effectively convert the voltage provided by the battery to output the operating voltage required by the system, thereby improving the flexibility of power supply.

[0055] Figure 1 This is a block diagram illustrating a battery-powered system according to an embodiment of the present invention. This battery-powered system can be applied to battery-powered scenarios in electromagnetic water meters. Figure 1 As shown, the battery power supply system includes a control unit 1, multiple batteries 2, a voltage acquisition unit 4, and a voltage conversion unit 5. Each of the multiple batteries is equipped with a corresponding battery switching unit, forming multiple battery switching units 3.

[0056] Specifically, each battery is connected to the input terminal of the corresponding battery switching unit, and the voltage acquisition unit 4 and the voltage conversion unit 5 are respectively connected to the output terminal of the battery switching unit. When a battery switching unit is turned on, the corresponding battery supplies power to the system.

[0057] Among them, the voltage acquisition unit 4 is used to acquire the voltage information of the currently powered battery.

[0058] The voltage conversion unit 5 is used to receive the voltage of the switched battery and output the operating voltage required by the system.

[0059] The control unit 1 is used to control the voltage acquisition unit 4 to acquire the voltage information of the currently powered battery and determine whether the acquired voltage information is less than a first preset threshold. If it is determined that the acquired voltage information is less than the first preset threshold, then another battery among the multiple batteries is switched to power the system, and the battery switching unit corresponding to the currently powered battery is disconnected and the battery switching unit corresponding to the switched battery is turned on.

[0060] The voltage conversion unit 5 is used to receive the voltage of the switched battery.

[0061] The control unit 1 is also used to control the voltage conversion unit 5 to convert the voltage of the switched battery into the operating voltage required by the system.

[0062] Figure 2 A circuit diagram of a battery-powered system provided for an embodiment of the present invention, such as... Figure 2As shown, the power supply system includes a control unit (not shown), six batteries, a voltage acquisition unit 4, and a voltage conversion unit 5. The six batteries are battery 21, battery 22, battery 23, battery 24, battery 25, and battery 26. Battery 21 corresponds to a battery switching unit 31, battery 22 corresponds to a battery switching unit 32, battery 23 corresponds to a battery switching unit 33, battery 24 corresponds to a battery switching unit 34, battery 25 corresponds to a battery switching unit 35, and battery 26 corresponds to a battery switching unit 36.

[0063] As a possible design solution, such as Figure 2 As shown, each battery switching unit includes a main transistor and a secondary transistor; one end of the secondary transistor is connected to the positive terminal of the corresponding battery, the other end of the secondary transistor is connected to the voltage conversion unit, the control terminal of the secondary transistor is connected to one end of the main transistor, the other end of the main transistor is connected to ground, and the end of the secondary transistor connected to the positive terminal of the battery is also connected to the control terminal of the secondary transistor through a resistor; the negative terminal of the battery is connected to ground, and each battery is connected to the voltage acquisition unit through the corresponding battery switching unit.

[0064] In this scheme, the control unit is used to collect the voltage information of the currently powered battery, wherein the currently powered battery is one of the multiple batteries; it determines whether the collected voltage information is less than a first preset threshold. If it is determined that the collected voltage information is less than the first preset threshold, it switches another battery among the multiple batteries to power the system, controls the battery switching unit corresponding to the currently powered battery to disconnect and the battery switching unit corresponding to the switched battery to turn on.

[0065] For example, taking battery switching unit 31 as an example, battery switching unit 31 includes a main transistor Q2 and a secondary transistor Q1. One end of the secondary transistor Q1 is connected to the positive terminal of the corresponding battery 21, and the other end of the secondary transistor Q1 is connected to the voltage conversion unit 5. The control terminal of the secondary transistor Q1 is connected to one end of the main transistor Q2, and the other end of the main transistor Q2 is connected to ground. The end of the secondary transistor Q1 connected to the positive terminal of the battery 21 is also connected to the control terminal of the main transistor Q2 through a resistor R1. The negative terminal of the battery 21 is connected to ground. In addition, the main transistor Q2 can also be connected to a control unit (not shown in the figure) through a resistor R2, so that the control unit can control the conduction of the main transistor Q2. For other components included in battery switching units, please refer to [link to relevant documentation]. Figure 2 As shown, the present invention will not elaborate further.

[0066] For example, if the currently collected voltage information is taken as the voltage of battery 21, and the voltage of battery 21 is less than a first preset threshold, and it is desired to switch battery 22 to power the system, the control unit can control the battery switching unit 31 corresponding to battery 21 to disconnect and the battery switching unit 32 corresponding to the switched battery 22 to turn on. Specifically, this can be achieved by controlling the main transistor Q2 in the battery switching unit 31 corresponding to the currently powered battery 21 to disconnect and the main transistor Q4 in the battery switching unit 32 corresponding to the switched battery 22 to turn on, thereby enabling battery 22 to power the system.

[0067] Similarly, battery switching unit 32 may include a main transistor Q4, a secondary transistor Q3, resistors R3 and R4; battery switching unit 33 may include a main transistor Q6, a secondary transistor Q5, resistors R5 and R6; battery switching unit 34 may include a main transistor Q8, a secondary transistor Q7, resistors R9 and R12; battery switching unit 35 may include a main transistor Q10, a secondary transistor Q9, resistors R13 and R15; and battery switching unit 36 ​​may include a main transistor Q12, a secondary transistor Q11, resistors R17 and R18. For specific control methods and implementation principles, please refer to battery switching unit 31, which will not be repeated here.

[0068] As a possible design solution, such as Figure 2 As shown, the control unit collects the voltage information of the currently powered battery through the voltage acquisition unit 4. The voltage acquisition unit 4 includes a second transistor Q13 and a sampling resistor R16 connected in series with the second transistor. Furthermore, the voltage acquisition unit 4 also includes resistors R10 and R14, and a capacitor C1. These three components are used to ensure the safety of the input voltage and the stability of the output voltage.

[0069] In this scheme, the control unit periodically controls the second transistor Q13 to turn on or off, so as to periodically acquire the voltage of the currently powered battery through the sampling resistor R14. The set period can be configured according to requirements; for example, a period of 5 minutes is set so that the control unit controls the second transistor Q13 to turn on or off every five minutes, acquiring the voltage of the currently powered battery through the sampling resistor R14 every five minutes. The purpose of setting the period is to consider that the voltage of the powered battery does not change much within a second. If the voltage of the powered battery is detected in seconds, the detected voltage results are often the same or have very small differences, thus increasing the load on the voltage acquisition unit 4. Therefore, a more reasonable acquisition period (e.g., 5 minutes) can be set to ensure that the voltage of the currently powered battery can be acquired while reducing the load on the voltage acquisition unit.

[0070] Furthermore, in this scheme, periodically controlling the second transistor to turn on or off to periodically acquire the voltage of the currently powered battery through the sampling resistor may include: setting a voltage threshold and / or a usage time threshold; periodically controlling the second transistor to turn on to periodically acquire the voltage of the currently powered battery through the sampling resistor; if it is determined that the voltage of the currently powered battery is greater than the voltage threshold and / or the usage time of the currently powered battery is greater than the usage time threshold, controlling the second transistor to turn off.

[0071] It should be noted that by periodically collecting the voltage of the currently powered battery and recording its usage time, and setting corresponding voltage and usage time thresholds, the utilization rate of each battery can be greatly improved by cyclically using each battery. Specifically, the approximate voltage value of the currently powered battery can be obtained by combining the power consumption of the backend load with the usage time thresholds, thus assisting in battery switching time.

[0072] As a possible design solution, such as Figure 2 As shown, the voltage conversion unit 5 includes a buck converter module 51 and / or a pass-through module 52.

[0073] In this scheme, the control unit is used to perform step-down conversion through the step-down conversion module 51 when the collected voltage information is higher than the second preset voltage, so as to output the working voltage required by the system. The working voltage required by the system is less than or equal to the second preset voltage and greater than the first preset voltage; and / or, when the collected voltage information is lower than the second preset voltage, the voltage information is performed through the pass-through module 52 and the working voltage required by the system is output.

[0074] As a possible design solution, such as Figure 2 As shown, the pass-through module 52 includes a first transistor Q14, and the buck converter module 51 includes a buck chip U1. In addition to the first transistor Q14, the pass-through module 52 also includes a resistor R30 and a capacitor C40. These two devices are used to ensure the safety of the input voltage and the stability of the output voltage. Similarly, the buck converter module 51, in addition to the buck chip U1, also includes an inductor L1, resistors R8, R7, and R11, a capacitor C7, and a diode D1. The connection relationships between these devices are as follows: Figure 4 As shown, capacitors C11, C12, and C13 constitute a filter unit, which can be used to reduce the ripple and noise of the output voltage.

[0075] In this scheme, the control unit is used to control the first transistor Q14 to turn off and enable the buck chip U1 when the collected voltage information is higher than the second preset voltage, so as to perform buck conversion on the received voltage through the buck chip U1 to output the operating voltage required by the system.

[0076] The control unit is also used to control the buck chip U1 to close and control the first transistor Q14 to turn on when the collected voltage information is lower than the second preset voltage, so as to perform a pass-through conversion on the received voltage through the first transistor Q14 and output the operating voltage required by the system.

[0077] Based on the above Figure 1 and Figure 2 This invention provides a battery-powered system and a battery-powered method, which are applied to a control unit. Figure 3 A flowchart of a battery power supply method provided in an embodiment of the present invention is shown below. Figure 3 As shown, the method includes:

[0078] S101. Collect the voltage information of the currently powered battery.

[0079] In this step, the currently powered battery is one of the plurality of batteries.

[0080] In this embodiment of the invention, the control unit can control the voltage acquisition unit in the battery power supply system to acquire the voltage information of the currently powered battery. It should be noted that, since the battery power supply concept of this invention is that only one battery powers the system at a time, the voltage acquisition unit cannot know which battery is providing the voltage; it can only acquire the voltage information and then send it to the control unit. The control unit knows which battery is currently providing power, and therefore can determine the voltage information of the currently powered battery based on the voltage information sent by the voltage acquisition unit.

[0081] For example, if the current power supply battery is battery 21, and the voltage collected by the voltage acquisition unit is 3V, the voltage acquisition unit does not know that 3V is the voltage of battery 21. The voltage acquisition unit only needs to send the voltage information of 3V to the control unit, so that the control unit can determine that the voltage of battery 21 is 3V.

[0082] S102. Determine whether the collected voltage information is less than the first preset threshold.

[0083] In this step, the first preset threshold is a cutoff voltage threshold, which can be understood as the minimum operating voltage required by the system. For example, the first preset threshold may include 2.5V.

[0084] In this embodiment of the invention, if it is determined that the collected voltage information is greater than a first preset threshold, it indicates that the collected voltage information meets the minimum operating voltage required by the system; if it is determined that the collected voltage information is less than the first preset threshold, it indicates that the collected voltage information does not meet the minimum operating voltage required by the system, and it is necessary to switch to another battery for power supply. Specifically, the subsequent step S103 can be executed to switch another battery among the multiple batteries to power the system, and control the battery switching unit corresponding to the currently powered battery to be disconnected and the battery switching unit corresponding to the switched battery to be turned on.

[0085] S103. If it is determined that the collected voltage information is less than the first preset threshold, then another battery among the multiple batteries is switched to power the system. The battery switching unit corresponding to the currently powered battery is turned off, and the battery switching unit corresponding to the switched battery is turned on, so as to receive the voltage of the switched battery through the voltage conversion unit and output the working voltage required by the system.

[0086] In this step, the voltage conversion unit is used to convert the voltage of the received switched battery accordingly and output the operating voltage required by the system. For example, when the voltage of the switched battery is higher than the operating voltage required by the system, the voltage of the battery is stepped down before the operating voltage required by the system is output; when the voltage of the switched battery is not higher than the operating voltage required by the system but is greater than a first preset threshold, the voltage of the battery is the operating voltage required by the system and can be directly output; when the voltage of the switched battery is less than the first preset threshold, the control unit continues to switch another battery among the multiple batteries to power the system, controlling the battery switching unit corresponding to the currently powered battery to disconnect and the battery switching unit corresponding to the switched battery to turn on, that is, replacing the next battery to power the system.

[0087] In this embodiment of the invention, by controlling the battery switching unit corresponding to the currently powered battery to be disconnected and the battery switching unit corresponding to the switched battery to be turned on, it is possible to switch batteries to power the system. It should be noted that when the battery switching unit corresponding to the switched battery is turned on, the battery switching units corresponding to the other batteries are disconnected. That is, only one battery powers the system at a time, which not only avoids the problem of batteries charging each other, but also improves battery utilization efficiency and enhances the safety of the battery power supply system.

[0088] In one embodiment of the battery power supply method provided by this invention, the voltage information of the currently powered battery (one of a plurality of batteries) is collected. If it is determined that the collected voltage information is less than a first preset threshold, another battery from the plurality of batteries is switched to power the system. The battery switching unit corresponding to the currently powered battery is disconnected, and the battery switching unit corresponding to the switched battery is turned on. This allows the voltage of the switched battery to be received by a voltage conversion unit and the required operating voltage of the system to be output. This prevents batteries from charging each other, solves the safety problem of traditional circuits, and greatly improves the battery life. Furthermore, by setting the voltage conversion unit, the output voltage can be guaranteed to be the required operating voltage of the system, thus adapting to the different voltages required by different electromagnetic water meters while avoiding battery damage caused by high output voltage, thereby improving energy conversion efficiency.

[0089] Figure 4 A flowchart of a battery power supply method provided in an embodiment of the present invention is shown below. Figure 4 As shown, this method is applied to a control unit, and the method includes:

[0090] S201. The voltage information of the currently powered battery is collected through the voltage acquisition unit.

[0091] In this step, each battery is connected to the voltage acquisition unit through a corresponding battery switching unit, so that the voltage acquisition unit can acquire the voltage information of the currently powered battery.

[0092] In this embodiment of the invention, as an optional solution, the voltage acquisition unit includes a second transistor and a sampling resistor connected in series with the second transistor. Therefore, the specific execution process of step S201 may include: periodically controlling the second transistor to be turned on or off, so as to periodically acquire the voltage of the currently powered battery through the sampling resistor.

[0093] For example, when the control unit turns the second transistor off, the voltage acquisition unit is not turned on, so the sampling resistor cannot acquire the voltage of the currently powered battery; when the control unit turns the second transistor on, the voltage acquisition unit turns on, so the sampling resistor can acquire the voltage of the currently powered battery. The purpose of this setting is to reduce system power consumption (constantly acquiring the voltage of the currently powered battery increases system power consumption) by periodically acquiring the voltage of each battery, thereby improving battery life.

[0094] Furthermore, in addition to acquiring the voltage information of the currently powered battery through the voltage acquisition unit, the battery usage time can also be acquired and recorded by the voltage acquisition unit and compared with the usage time of a reference battery. This can reduce the power loss due to mismeasurement and thus improve the battery life.

[0095] S202. Determine whether the collected voltage information is less than the first preset threshold.

[0096] In this embodiment of the invention, this step can be referred to the execution process of step S102 above.

[0097] S203. If it is determined that the collected voltage information is less than the first preset threshold, then switch another battery among the multiple batteries to power the system, and control the main transistor in the battery switching unit corresponding to the currently powered battery to turn off and the main transistor in the battery switching unit corresponding to the switched battery to turn on.

[0098] In this step, as a possible design, the battery switching unit corresponding to each battery includes: a main transistor and a secondary transistor; one end of the secondary transistor is connected to the positive terminal of the corresponding battery, the other end of the secondary transistor is connected to the voltage conversion unit, the control terminal of the secondary transistor is connected to one end of the main transistor, the other end of the main transistor is connected to ground, and the end of the secondary transistor connected to the positive terminal of the battery is also connected to the control terminal of the main transistor through a resistor; the negative terminal of the battery is connected to ground.

[0099] In this embodiment of the invention, through the above design scheme, when the control unit determines that the collected voltage information is less than a first preset threshold and it is necessary to switch another battery among the multiple batteries to power the system, the main transistor in the battery switching unit corresponding to the currently powered battery is turned off, thereby preventing the battery corresponding to the currently powered battery from continuing to supply power. The main transistor in the battery switching unit corresponding to the switched battery is turned on, thereby turning on the battery switching unit corresponding to the switched battery, thereby enabling the switched battery to power the system.

[0100] It should be noted that the control unit not only needs to control the main transistor in the battery switching unit corresponding to the currently powered battery to turn off and the main transistor in the battery switching unit corresponding to the switched battery to turn on, but also needs to control the main transistors in the battery switching units corresponding to the remaining batteries other than the currently powered battery and the switched battery to turn off. For example, taking multiple batteries including battery 21, battery 22, battery 23, battery 24, battery 25, and battery 26 as an example, when the currently powered battery is battery 21 and the switched battery is battery 22, the control unit controls the main transistor in the battery switching unit corresponding to battery 21 to turn off, the main transistor in the battery switching unit corresponding to battery 22 to turn on, and the main transistors in the battery switching units corresponding to batteries 22-26 to turn off.

[0101] In this embodiment of the invention, the control unit can prevent different batteries from charging each other by sequentially switching between different batteries, thereby ensuring the safety of the power supply system.

[0102] S204. The voltage of the switched battery is received through the voltage conversion unit and the operating voltage required by the system is output.

[0103] In this step, the voltage conversion unit includes a buck converter module and / or a pass-through module. The buck converter module is used to perform a step-down conversion on the voltage of the currently powered battery to output the operating voltage required by the system. The pass-through module is used to perform a pass-through conversion on the voltage of the currently powered battery to output the operating voltage required by the system.

[0104] In this embodiment of the invention, S204 may include:

[0105] S2041. When the collected voltage information is higher than the second preset voltage, the voltage is stepped down by the step-down conversion module to output the operating voltage required by the system. The operating voltage required by the system is less than or equal to the second preset voltage and greater than the first preset voltage.

[0106] In this step, the second preset threshold can be understood as the highest operating voltage required by the system. For example, the second preset threshold may include 3V.

[0107] In this embodiment of the invention, for example, taking the collected voltage information as 3.6V, since 3.6V > 3V, a step-down conversion module is needed to perform step-down conversion to output the operating voltage required by the system. The operating voltage required by the system is ≤ 3V, for example, the 3.6V voltage is stepped down to 3V or 2.8V.

[0108] Furthermore, as an optional solution, the pass-through module includes a first transistor, and the buck converter module includes a buck chip.

[0109] S2041 may specifically include: when the acquired voltage information is higher than the second preset voltage, controlling the first transistor to disconnect and enabling the buck chip to perform buck conversion on the received voltage to output the operating voltage required by the system.

[0110] In this embodiment of the invention, by controlling the first transistor to disconnect, the through module is not working, and the buck converter is enabled by the buck chip. The purpose of this is to ensure that the collected voltage information is converted through only one module, so as not to cause voltage reduction due to passing through two modules, thereby affecting the output of the working voltage required by the system.

[0111] S2042. When the collected voltage information is lower than the second preset voltage, the system performs a direct-through conversion through the direct-through module and outputs the operating voltage required by the system.

[0112] In this embodiment of the invention, for example, taking the collected voltage information as 2.8V, since 2.8V < 3V, this voltage is the operating voltage required by the system and does not need to be stepped down. Therefore, the voltage information is directly converted through the pass-through module and the operating voltage required by the system is output. This can be understood as directly outputting 2.8V without step-down processing.

[0113] Furthermore, as an optional solution, the pass-through module includes a first transistor, and the buck converter module includes a buck chip.

[0114] S2042 may specifically include: when the collected voltage information is lower than the second preset voltage, controlling the buck chip to close and controlling the first transistor to conduct, so as to perform direct conversion on the received voltage through the first transistor and output the operating voltage required by the system.

[0115] In this embodiment of the invention, by setting a buck converter module and a pass-through module, the buck chip in the buck converter module can output a voltage that meets the working requirements when it is started, and when the buck chip is closed, it can switch to the pass-through module to directly output the voltage of the currently powered battery, thereby improving the flexibility of power supply.

[0116] In an embodiment of a battery power supply method provided by the present invention, the voltage information of the currently powered battery is collected, wherein the currently powered battery is one of a plurality of batteries; if it is determined that the collected voltage information is less than a first preset threshold, another battery among the plurality of batteries is switched to power the system, the battery switching unit corresponding to the currently powered battery is disconnected and the battery switching unit corresponding to the switched battery is turned on, so that the voltage of the switched battery is received by the voltage conversion unit and the operating voltage required by the system is output. This can prevent the batteries from charging each other, solve the safety problem of traditional circuits, greatly improve the battery life, and at the same time, by setting the voltage conversion unit, it can also ensure that the output voltage is the operating voltage required by the system, thereby avoiding the problem of battery damage caused by high output voltage and improving the power conversion efficiency.

[0117] Figure 5 This is a schematic diagram of the structure of a battery-powered device provided in an embodiment of the present invention, as shown below. Figure 5 As shown, the battery-powered device 10 includes:

[0118] The acquisition module 11 is used to acquire the voltage information of the currently powered battery, wherein the currently powered battery is one of the multiple batteries;

[0119] The judgment module 12 is used to determine whether the collected voltage information is less than a first preset threshold.

[0120] The control module 13 is used to switch another battery among the multiple batteries to power the system if it is determined that the collected voltage information is less than a first preset threshold. It controls the battery switching unit corresponding to the currently powered battery to be disconnected and the battery switching unit corresponding to the switched battery to be turned on, so as to receive the voltage of the switched battery through the voltage conversion unit and output the operating voltage required by the system.

[0121] Optionally, the system further includes a voltage acquisition unit, and each battery is connected to the voltage acquisition unit through a corresponding battery switching unit;

[0122] In this embodiment of the invention, the acquisition module 11 of the device is specifically used to acquire the voltage information of the currently powered battery through the voltage acquisition unit.

[0123] Optionally, the battery switching unit corresponding to each battery includes: a main transistor and a secondary transistor; one end of the secondary transistor is connected to the positive terminal of the corresponding battery, the other end of the secondary transistor is connected to the voltage conversion unit, the control terminal of the secondary transistor is connected to one end of the main transistor, the other end of the main transistor is connected to ground, and the end of the secondary transistor connected to the positive terminal of the battery is also connected to the control terminal of the secondary transistor through a resistor; the negative terminal of the battery is connected to ground.

[0124] In this embodiment of the invention, the control module 13 of the device is specifically used to control the main transistor in the battery switching unit corresponding to the currently powered battery to turn off and the main transistor in the battery switching unit corresponding to the switched battery to turn on.

[0125] Optionally, the voltage conversion unit includes a buck converter module and / or a pass-through module;

[0126] In this embodiment of the invention, the device further includes a conversion module 14.

[0127] The conversion module 14 is used to perform step-down conversion through the step-down conversion module when the collected voltage information is higher than the second preset voltage, so as to output the working voltage required by the system. The working voltage required by the system is less than or equal to the second preset voltage and greater than the first preset voltage; and / or, when the collected voltage information is lower than the second preset voltage, perform pass-through conversion through the pass-through module and output the working voltage required by the system.

[0128] Optionally, the pass-through module includes a first transistor, and the buck converter module includes a buck chip;

[0129] In this embodiment of the invention, the conversion module 14 of the device is specifically used to control the first transistor to disconnect and enable the step-down chip when the collected voltage information is higher than the second preset voltage, so as to perform step-down conversion on the received voltage through the step-down chip to output the working voltage required by the system.

[0130] In this embodiment of the invention, the conversion module 14 of the device is specifically used to control the step-down chip to close and control the first transistor to conduct when the collected voltage information is lower than the second preset voltage, so as to perform direct conversion on the received voltage through the first transistor and output the operating voltage required by the system.

[0131] Optionally, the voltage acquisition unit includes a second transistor and a sampling resistor connected in series with the second transistor;

[0132] In this embodiment of the invention, the control module 13 of the device is also used to periodically control the second transistor to turn on or off, so as to periodically collect the voltage of the currently powered battery through the sampling resistor.

[0133] The specific implementation principle and effects of the device provided in this embodiment can be found in the foregoing embodiments, and will not be repeated here.

[0134] This invention also provides a battery-powered device, including: a memory and a processor; the memory being a storage device for storing executable instructions of the processor; wherein the processor is configured to implement the battery-powered method described in any of the foregoing embodiments.

[0135] Figure 6 This is a block diagram of a battery-powered device provided in an embodiment of the present invention, such as... Figure 6 As shown, the battery-powered device 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an alarm component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0136] Processing component 802 typically handles the overall operation of battery-powered device 800, including operations associated with display, data communication, and recording. Processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0137] Memory 804 is configured to store various types of data to support the operation of the battery-powered device 800. Examples of this data include instructions for any application or method operating on the battery-powered device 800, for information, accumulated flow, amounts, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0138] The power supply assembly 806 provides power to the various components of the battery-powered device 800. The power supply assembly 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the battery-powered device 800.

[0139] The multimedia component 808 includes a screen that provides an output interface between the battery-powered device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation.

[0140] Alarm component 810 is configured to output and / or input alarm signals. For example, alarm component 810 may send alarm information via audible and visual alarm. The received alarm signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, alarm component 810 further includes a speaker for outputting alarm signals.

[0141] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0142] Sensor assembly 814 includes one or more sensors for providing status assessments of various aspects of the battery-powered device 800. For example, sensor assembly 814 can detect the on / off state of the battery-powered device 800, the relative positioning of components such as the display and keypad of the battery-powered device 800, changes in the position of the battery-powered device 800 or one of its components, the presence or absence of user contact with the battery-powered device 800, the orientation or acceleration / deceleration of the battery-powered device 800, and temperature changes of the battery-powered device 800. Sensor assembly 814 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications. In some embodiments, sensor assembly 814 may also include accelerometers, gyroscopes, magnetometers, pressure sensors, or temperature sensors. Specifically, when sensor assembly 814 includes a magnetometer, processor 820 generates an excitation signal that causes a coil to generate a magnetic field. In an electromagnetic water meter system, water flow can act as a conductor, cutting magnetic lines of force to generate an induced voltage, which processor 820 then measures to obtain a flow rate value.

[0143] Communication component 816 is configured to facilitate wired or wireless communication between battery-powered device 800 and other devices. Battery-powered device 800 can access wireless networks based on communication standards, such as WiFi, 2G, 3G, 4G, 5G, or Narrow Band Internet of Things (NB-IoT), or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID), Infrared Data Association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0144] In an exemplary embodiment, the battery-powered device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0145] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by a processor 820 of a battery-powered device 800 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0146] A non-transitory computer-readable storage medium, wherein when instructions in the storage medium are executed by a processor of a battery-powered device, the battery-powered device is enabled to perform the battery-powered method described above.

[0147] This invention also provides an electromagnetic water meter system, including the battery-powered device 800 described above.

[0148] This invention also provides a computer program product, including a computer program that, when executed by a processor, implements the battery power supply method described in any of the foregoing embodiments.

[0149] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0150] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein.

[0151] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A battery-powered method for an electromagnetic water meter, characterized in that, Applied to a battery-powered system, the battery-powered system includes multiple batteries, each battery is provided with a corresponding battery switching unit, and the battery is connected to a voltage conversion unit through the corresponding battery switching unit; The method includes: Collect the voltage information of the currently powered battery, wherein the currently powered battery is one of the plurality of batteries; Determine whether the collected voltage information is less than a first preset threshold; If it is determined that the collected voltage information is less than the first preset threshold, then another battery among the multiple batteries is switched to power the system. The battery switching unit corresponding to the currently powered battery is turned off and the battery switching unit corresponding to the switched battery is turned on, so that the voltage of the switched battery can be received through the voltage conversion unit and the operating voltage required by the system can be output. Only one battery powers the system at a time. The system further includes a voltage acquisition unit, the voltage acquisition unit comprising a second transistor and a sampling resistor connected in series with the second transistor; the method further includes: Set voltage thresholds and / or usage time thresholds; The second transistor is periodically turned on to periodically acquire the voltage of the currently powered battery through the sampling resistor; If it is determined that the voltage of the currently powered battery is greater than the voltage threshold and / or the usage time of the currently powered battery is greater than the usage time threshold, the second transistor is controlled to disconnect so that each battery can be used in a cyclic manner.

2. The battery-powered method according to claim 1, characterized in that, The system also includes a voltage acquisition unit, and each battery is connected to the voltage acquisition unit through a corresponding battery switching unit. The process of collecting the voltage information of the currently powered battery includes: The voltage information of the currently powered battery is collected by the voltage acquisition unit.

3. The battery-powered method according to claim 1, characterized in that, Each battery switching unit includes: a main transistor and a secondary transistor; one end of the secondary transistor is connected to the positive terminal of the corresponding battery, the other end of the secondary transistor is connected to the voltage conversion unit, the control terminal of the secondary transistor is connected to one end of the main transistor, the other end of the main transistor is connected to ground, and the end of the secondary transistor connected to the positive terminal of the battery is also connected to the control terminal of the main transistor through a resistor; the negative terminal of the battery is connected to ground. The control of disconnecting the battery switching unit corresponding to the currently powered battery and turning on the battery switching unit corresponding to the switched battery includes: The main transistor in the battery switching unit corresponding to the currently powered battery is turned off, and the main transistor in the battery switching unit corresponding to the switched battery is turned on.

4. The battery-powered method according to claim 2, characterized in that, The voltage conversion unit includes a buck converter module and / or a through module; The method further includes: When the acquired voltage information is higher than the second preset voltage, the voltage is stepped down by the step-down conversion module to output the operating voltage required by the system. The operating voltage required by the system is less than or equal to the second preset voltage and greater than the first preset voltage; and / or, When the collected voltage information is lower than the second preset voltage, the system performs a direct conversion through the direct module and outputs the operating voltage required by the system.

5. The battery-powered method according to claim 4, characterized in that, The pass-through module includes a first transistor, and the buck converter module includes a buck chip; When the acquired voltage information is higher than the second preset voltage, the step-down conversion module performs step-down conversion to output the operating voltage required by the system, including: When the acquired voltage information is higher than the second preset voltage, the voltage acquisition unit controls the first transistor to turn off and enables the step-down chip to perform step-down conversion on the received voltage in order to output the operating voltage required by the system. When the collected voltage information is lower than the second preset voltage, the system performs a direct-through conversion through the direct-through module and outputs the operating voltage required by the system, including: When the collected voltage information is lower than the second preset voltage, the voltage acquisition unit controls the buck chip to close and controls the first transistor to turn on, so as to perform a direct conversion on the received voltage through the first transistor and output the operating voltage required by the system.

6. A battery-powered device for an electromagnetic water meter, characterized in that, include: The acquisition module is used to acquire the voltage information of the currently powered battery, wherein the currently powered battery is one of a plurality of batteries; The judgment module is used to determine whether the collected voltage information is less than a first preset threshold. The control module is used to switch another battery among the multiple batteries to power the system if it is determined that the collected voltage information is less than a first preset threshold. It controls the battery switching unit corresponding to the currently powered battery to be disconnected and the battery switching unit corresponding to the switched battery to be turned on, so as to receive the voltage of the switched battery through the voltage conversion unit and output the working voltage required by the system. Only one battery powers the system at a time. The control module is also used for: Set voltage thresholds and / or usage time thresholds; The second transistor is periodically turned on to periodically sample the voltage of the currently powered battery through a sampling resistor; If it is determined that the voltage of the currently powered battery is greater than the voltage threshold and / or the usage time of the currently powered battery is greater than the usage time threshold, the second transistor is controlled to disconnect so that each battery can be used in a cycle.

7. A battery-powered device, characterized in that, include: Memory, processor; Memory, used to store the processor-executable instructions; The processor is configured to implement the battery-powered method as described in any one of claims 1-5.

8. An electromagnetic water meter system, characterized in that, Includes the battery-powered device as described in claim 7.

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