Storage battery detection circuit and detection device

Abstract

The utility model relates to a storage battery detection circuit and a detection device. The storage battery detection circuit comprises a controller, a first storage battery, a second storage battery and a detection module, the controller is respectively connected with the first storage battery and the second storage battery, the detection module is connected with the first storage battery, and the first storage battery and the second storage battery are both used for being connected with a main network; the controller is used for controlling connection or disconnection between the second storage battery and the main network; and the second storage battery is used for supplying power to the main network under the condition that the second storage battery is conducted with the main network.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and more particularly, to a storage battery detection circuit and a detection device. Background Art

[0002] A storage battery can be connected in parallel to the main network as an auxiliary power supply. When a power failure occurs in the main network power supply, the storage battery can discharge in time to ensure the stable operation of the main network.

[0003] However, when it is necessary to detect the effectiveness of the storage battery, the connection between the storage battery and the main network needs to be disconnected. At this time, if the main network needs to be powered by the storage battery, the storage battery cannot supply power in time, reducing the stability of the main network operation. Summary of the Utility Model

[0004] To overcome the problems existing in the related art, the present disclosure provides a storage battery detection circuit and a detection device.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided a storage battery detection circuit, including: a controller, a first storage battery, a second storage battery, and a detection module; the controller is respectively connected to the first storage battery and the second storage battery, the detection module is connected to the first storage battery, and both the first storage battery and the second storage battery are used to connect to the main network; the controller is configured to control the conduction or disconnection between the second storage battery and the main network; the second storage battery is configured to supply power to the main network when it is conductive to the main network.

[0006] Optionally, the controller is configured to control the conduction between the second storage battery and the main network when the connection between the first storage battery and the main network is disconnected and the detection module is conductive to the first storage battery.

[0007] Optionally, the storage battery detection circuit further includes: a first drive circuit and a second drive circuit; the first drive circuit is respectively connected to the controller and the first storage battery; the second drive circuit is respectively connected to the controller and the second storage battery; the first drive circuit is configured to trigger the conduction or disconnection between the first storage battery and the main network and trigger the conduction or disconnection between the first storage battery and the detection module based on a first control signal triggered by the controller; the second drive circuit is configured to trigger the conduction or disconnection between the second storage battery and the main network based on a second control signal triggered by the controller.

[0008] Optionally, the battery detection circuit further includes: a first contactor connected to the first drive circuit; the first drive circuit is configured to generate a first trigger signal based on a first control signal triggered by the controller to trigger the first contactor to trigger conduction or disconnection between the first battery and the main network, and trigger conduction or disconnection between the first battery and the detection module.

[0009] Optionally, the first contactor includes a first contact and a second contact. The first contact is used to connect to the main network, the first battery is connected to the first contact, and the second contact is respectively connected to the first battery and the detection module; the first contactor is configured to trigger closing or opening of the first contact and the second contact based on the first trigger signal.

[0010] Optionally, the battery detection circuit further includes: a second contactor connected to the second drive circuit; the second drive circuit is configured to generate a second trigger signal based on a second control signal triggered by the controller to trigger the second contactor to trigger conduction or disconnection between the second battery and the main network.

[0011] Optionally, the second contactor includes a third contact. The third contact is used to connect to the main network, and the second battery is connected to the third contact; the second contactor is configured to trigger closing or opening of the third contact based on the second trigger signal.

[0012] Optionally, the battery detection circuit further includes: a time delay circuit respectively connected to the controller and the first drive circuit; the time delay circuit is configured to delay the transmission of the first control signal triggered by the controller.

[0013] Optionally, the detection module includes a sampling resistor and a load circuit. The load circuit is connected to the first battery through the second contact, and the sampling resistor is respectively connected to the load circuit and the first battery; the sampling resistor is configured to collect the voltage value and current value of the load circuit.

[0014] Optionally, the battery detection circuit further includes a processing module connected to the sampling resistor; the sampling resistor is configured to transmit the collected voltage value and current value to the processing module.

[0015] Optionally, the battery detection circuit further includes an alarm module connected to the processing module; the alarm module is configured to output an alarm message.

[0016] According to a second aspect of the embodiments of the present disclosure, there is provided a battery detection device, including the battery detection circuit described in the first aspect above.

[0017] Through the above technical solution, the conduction or disconnection between the second battery and the main network can be controlled. When the second battery is conducting with the main network, the second battery supplies power to the main network. In this way, when it is necessary to detect the effectiveness of the power supply battery, the connection between the backup battery and the main network can be conducted. At this time, if a power failure occurs in the main network power supply, the backup battery can supply power to the main network in time, improving the stability of the main network during operation.

[0018] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. They are used together with the following specific implementation to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0020] Figure 1 is a schematic structural diagram of a battery detection circuit shown according to an exemplary embodiment.

[0021] Figure 2 is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment.

[0022] Figure 3 is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment.

[0023] Figure 4 is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment.

[0024] Figure 5 is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment.

[0025] Figure 6 is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment.

[0026] Figure 7 is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment.

[0027] Figure 8 is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment.

[0028] Figure 9It is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment.

[0029] Figure 10 It is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment.

[0030] Figure 11 It is a block diagram of a battery detection device shown according to an exemplary embodiment. Detailed implementation manners

[0031] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0032] The implementation manners described in some embodiments of the present disclosure below do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0033] The terms "first", "second", etc. in the specification and claims of this application and the above drawings are used to distinguish similar objects and do not have to be understood as a specific order or sequence. Additionally, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements.

[0034] The term "including" and its variations used herein are open-ended, that is, "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments".

[0035] In the related art, when it is necessary to detect the effectiveness of a battery, the connection between the battery and the main network needs to be disconnected. At this time, if the main network needs to be powered by the battery, the battery cannot supply power in time, reducing the stability of the main network operation.

[0036] To solve the above technical problems, the present disclosure provides a battery detection circuit and a detection device. The circuit includes a controller, a first battery, a second battery, and a detection module. The controller is respectively connected to the first battery and the second battery. The detection module is connected to the first battery. Both the first battery and the second battery are used to connect to the main network. The controller is configured to control the conduction or disconnection between the second battery and the main network. The second battery is configured to supply power to the main network when it is conductive to the main network. In this way, when it is necessary to detect the effectiveness of the power supply battery, the connection between the backup battery and the main network can be conducted. At this time, if a power supply failure occurs in the main network, the backup battery can supply power to the main network in time, improving the stability of the main network during operation.

[0037] The following will describe in detail the specific embodiments of the present disclosure with reference to the accompanying drawings.

[0038] Figure 1 FIG. 1 is a schematic structural diagram of a battery detection circuit 100 shown according to an exemplary embodiment, as Figure 1 shown, the battery detection circuit 100 includes: a controller 101, a first battery 102, a second battery 103, and a detection module 104. The controller 101 is respectively connected to the first battery 102 and the second battery 103. The detection module 104 is connected to the first battery 102. Both the first battery 102 and the second battery 103 are used to connect to the main network. The controller 101 is configured to control the conduction or disconnection between the second battery 103 and the main network. The second battery 103 is configured to supply power to the main network when it is conductive to the main network.

[0039] Among them, the controller 101 can respectively control the connection between the first battery 102 and the second battery 103 and the main network. The first battery 102 can be a power supply battery, configured to assist in supplying power to the main network when a power supply failure occurs in the main network. The second battery 103 can be a backup battery, configured to realize the auxiliary power supply function of the second battery 103 when the first battery 102 is disconnected from the main network for detection. The detection module 104 can be used to detect the effectiveness of the first battery 102. The main network can be a transmission line in a high-load power system, and battery-assisted power supply is required to achieve power transmission.

[0040] In some embodiments, the controller 101 is configured to control the conduction between the second battery 103 and the main network when the first battery 102 is disconnected from the main network and the detection module 104 is conductive to the first battery 102.

[0041] Exemplarily, when detecting the effectiveness of the first battery 102, the controller 101 can disconnect the connection between the first battery 102 and the main network, and connect the first battery 102 to the detection module 104. The first battery 102 can enter the detection state without disconnecting from the main network. At the same time, the controller 101 connects the second battery 103 to the main network to enable the second battery 103 to supply power to the main network.

[0042] With the above solution, when detecting the first battery, the connection between the first battery and the main network can be disconnected, and the connection between the detection module and the first battery can be connected. At the same time, the connection between the second battery and the main network can be connected to enable the second battery to supply power to the main network. In this way, when it is necessary to detect the effectiveness of the power supply battery, the connection between the power supply battery and the main network can be disconnected, and the connection between the backup battery and the main network can be connected. At this time, during the period when the power supply battery is being detected, when a fault occurs in the main network power supply, the backup battery can supply power to the main network in time, improving the stability of the main network during operation. At the same time, when the power supply battery is working, the backup battery is in a disconnected state, which can avoid interference from the backup battery to the power supply battery.

[0043] Figure 2 It is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment. As Figure 2 shown, the battery detection circuit 100 may further include: a first drive circuit 105 and a second drive circuit 106; the first drive circuit 105 is respectively connected to the controller 101 and the first battery 102; the second drive circuit 106 is respectively connected to the controller 101 and the second battery 103; the first drive circuit 105 is configured to trigger the conduction or disconnection between the first battery 102 and the main network, and trigger the conduction or disconnection between the first battery 102 and the detection module 104 based on a first control signal triggered by the controller 101; the second drive circuit 106 is configured to trigger the conduction or disconnection between the second battery 103 and the main network based on a second control signal triggered by the controller 101.

[0044] Exemplarily, the first control signal may include a control signal for turning on or off the connection between the first storage battery 102 and the main network, and may also include a control signal for turning on or off the connection between the first storage battery 102 and the detection module 104. The second control signal may include a control signal for turning on or off the connection between the second storage battery 103 and the main network. For example, in the case where the effectiveness of the power supply storage battery needs to be detected, the first drive circuit 105 may, based on the first control signal triggered by the controller 101, disconnect the connection between the first storage battery 102 and the main network and turn on the connection between the first storage battery 102 and the detection module 104, and the second drive circuit 106 may, based on the second control signal triggered by the controller 101, turn on the connection between the second storage battery 103 and the main network.

[0045] In some embodiments, as Figure 3 shown, the battery detection circuit 100 may further include: a first contactor KM1, which is connected to the first drive circuit 105; the first drive circuit 105 is configured to generate a first trigger signal based on the first control signal triggered by the controller 101 to trigger the first contactor KM1 to turn on or off the connection between the first storage battery 102 and the main network and trigger the connection between the first storage battery 102 and the detection module 104 to be turned on or off.

[0046] Exemplarily, the first trigger signal may include a trigger signal for turning on or off the connection between the first storage battery 102 and the main network, and may also include a trigger signal for turning on or off the connection between the first storage battery 102 and the detection module 104. For example, in the case where the effectiveness of the power supply storage battery needs to be detected, the first contactor KM1 may, based on the first trigger signal triggered by the first drive circuit 105, disconnect the connection between the first storage battery 102 and the main network and turn on the connection between the first storage battery 102 and the detection module 104.

[0047] In some embodiments, as Figure 4 shown, the first contactor KM1 includes a first contact and a second contact. The first contact is used to connect to the main network, the first storage battery 102 is connected to the first contact, and the second contact is respectively connected to the first storage battery 102 and the detection module 104; the first contactor KM1 is configured to trigger the closing or opening of the first contact and the second contact based on the first trigger signal.

[0048] Among them, the first contact is a normally closed contact, the first storage battery 102 and the main network are in a normally conducting state, the second contact is a normally open contact, and the first storage battery 102 and the detection module 104 are in a normally disconnected state. In the case where the effectiveness of the first storage battery 102 needs to be detected, based on the first trigger signal, the first contact can be disconnected to disconnect the connection between the first storage battery 102 and the main network, and the second contact can be closed to conduct the connection between the first storage battery 102 and the detection module 104.

[0049] In some embodiments, as Figure 5 shown, the battery detection circuit 100 may further include: a second contactor KM2, and the second contactor KM2 is connected to the second drive circuit 106; the second drive circuit 106 is configured to generate a second trigger signal based on a second control signal triggered by the controller 101 to trigger the second contactor KM2 to trigger the conduction or disconnection between the second storage battery 103 and the main network.

[0050] Exemplarily, the second trigger signal may include a trigger signal for the conduction or disconnection between the second storage battery 103 and the main network. For example, in the case where the effectiveness of the power supply storage battery needs to be detected, the second contactor KM2 may conduct the connection between the second storage battery 103 and the main network based on the second trigger signal triggered by the second drive circuit 106.

[0051] In some embodiments, as Figure 6 shown, the second contactor KM2 includes a third contact, and the third contact is used to connect to the main network, and the second storage battery 103 is connected to the third contact; the second contactor KM2 is configured to trigger the closing or opening of the third contact based on the second trigger signal.

[0052] Exemplarily, the third contact is a normally open contact, and the second storage battery 103 and the main network are in a normally disconnected state. In the case where the effectiveness of the first storage battery 102 needs to be detected, the third contact can be closed based on the second trigger signal to conduct the connection between the second storage battery 103 and the main network.

[0053] Figure 7 is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment. As Figure 7 shown, the battery detection circuit 100 may further include: a time delay circuit 107, and the time delay circuit 107 is respectively connected to the controller 101 and the first drive circuit 105; the time delay circuit 107 is configured to delay the transmission of the first control signal triggered by the controller 101.

[0054] Exemplarily, in the case where the effectiveness of the first battery 102 needs to be detected, the controller 101 triggers the first control signal and the second control signal. The delay circuit 107 can receive the first control signal and, after delaying for a preset duration, transmit the first control signal to the first drive circuit 105. In this way, by setting up a delay circuit, the backup battery can be first put into power supply for the main network, and then the power supply battery to be detected can be disconnected from the main network for detection, which can improve the stability of the main network operation during the switching of the battery power supply state.

[0055] In some embodiments, as Figure 8 shown, the detection module 104 may include a sampling resistor 1041 and a load circuit 1042. The load circuit 1042 is connected to the first battery 102 through the second contact. The sampling resistor 1041 is respectively connected to the load circuit 1042 and the first battery 102. The sampling resistor 1041 is used to collect the voltage value and current value of the load circuit 1042.

[0056] Among them, the load circuit 1042 can be simulated as the power consumption end when the first battery 102 supplies power to the main network circuit. The sampling resistor 1041 can sample the loop of the load circuit 1042 and the first battery 102 to collect the voltage value and current value of the load circuit 1042. The voltage value and current value include instantaneous value and effective value.

[0057] Figure 9 is a schematic structural diagram of another battery detection circuit shown according to an exemplary embodiment. As Figure 9 shown, the battery detection circuit 100 may further include: a processing module 108, and the processing module 108 is connected to the sampling resistor 1041. The sampling resistor 1041 is used to transmit the collected voltage value and current value to the processing module 108.

[0058] Exemplarily, the processing module 108 can calculate the battery capacity and internal resistance of the first battery 102 through circuit calculation methods such as the volt-ampere method and the ampere-hour current method according to the voltage value and current value collected by the sampling resistor 1041, and compare the calculated battery capacity and internal resistance with the preset capacity and internal resistance respectively. According to the capacity deviation rate between the battery capacity and the preset capacity and the internal resistance deviation rate between the battery internal resistance and the preset internal resistance, the performance deviation rate of the battery is calculated by weighted calculation.

[0059] In some embodiments, as Figure 10 shown, the battery detection circuit 100 may further include: an alarm module 109, and the alarm module 109 is connected to the processing module 108. The alarm module 109 is used to output an alarm message.

[0060] Among them, the alarm information is used to prompt the user that the performance of the battery is abnormal and the user needs to perform maintenance in a timely manner. The alarm module may include a buzzer or an indicator light. Exemplarily, when the performance deviation rate of the first battery 102 obtained by the processing module 108 is greater than the preset deviation rate threshold, the performance of the battery is abnormal at this time, and an alarm information is output. In this way, when the performance of the power supply battery is abnormal, the user can be alarmed in a timely manner, improving the stability and safety of the circuit.

[0061] The following combines Figure 10 the shown battery detection circuit to illustrate the working principle of the battery detection circuit:

[0062] When it is necessary to detect the effectiveness of the first battery 102, the controller 101 triggers the first control signal and the second control signal, sends the first control signal to the time delay circuit 107, and at the same time sends the second control signal to the second drive circuit 106.

[0063] After the time delay circuit 107 delays for a preset duration, it transmits the first control signal to the first drive circuit 105. In response to receiving the first control signal, the first drive circuit 105 generates a first trigger signal and sends the first trigger signal to the first contactor KM2, causing the normally open first contact in the first contactor KM1 to close and the normally closed second contact to open, disconnecting the connection between the first battery 102 and the main network, stopping the power supply of the first battery 102 to the main network, and at the same time conducting the connection between the first battery 102 and the detection module 104 for battery detection.

[0064] When detecting the effectiveness of the first battery 102, the first battery 102 and the sampling resistor 1041 and the load circuit 1042 connected to each other in the detection module 104 form a closed loop. The sampling resistor 1041 collects the instantaneous values and effective values of the voltage and current in the load circuit 1042, and transmits the collected voltage value and current value to the processing module 108. The processing module 108 calculates the battery capacity and internal resistance of the first battery 102 through circuit calculation methods such as the volt-ampere method and the ampere-hour current method based on the collected voltage value and current value, and compares the calculated battery capacity and internal resistance with the preset capacity and internal resistance respectively. According to the capacity deviation rate of the battery capacity and the preset capacity and the internal resistance deviation rate of the battery internal resistance and the preset internal resistance, the performance deviation rate of the battery is calculated by weighted calculation. The alarm module 109 outputs an alarm message to the user when the performance deviation rate of the battery is greater than the preset deviation rate threshold.

[0065] Meanwhile, in response to receiving the second control signal, the second drive circuit 106 generates a second trigger signal and sends the second trigger signal to the second contactor KM2, causing the normally open third contact in the second contactor KM2 to close, so that the connection between the second battery 103 and the main network is conducted, enabling the second battery 103 to supply power to the main network.

[0066] In this way, when it is necessary to detect the effectiveness of the power supply battery, the connection between the power supply battery and the main network can be disconnected, and the connection between the backup battery and the main network can be conducted. At this time, during the period when the power supply battery is being detected, when a fault occurs in the main network power supply, the backup battery can supply power to the main network in a timely manner, improving the stability of the main network during operation. At the same time, when the power supply battery is working, the backup battery is in a disconnected state, which can avoid interference from the backup battery to the power supply battery.

[0067] The present disclosure also provides a battery detection device. Figure 11 It is a block diagram of a battery detection device shown according to an exemplary embodiment, as Figure 11 shown. The battery detection device 200 includes a battery detection circuit 100 as Figures 1 to 10 shown.

[0068] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0069] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any appropriate manner. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0070] Furthermore, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A battery detection circuit, characterized in that: include: A controller, a first storage battery, a second storage battery and a detection module; the controller is connected to the first storage battery and the second storage battery respectively, the detection module is connected to the first storage battery, and the first storage battery and the second storage battery are both used to connect to the main network; The controller is used to control the connection or disconnection between the second storage battery and the main network; The second storage battery is used to supply power to the main network when the second storage battery is connected to the main network.

2. The battery detection circuit according to claim 1, characterized in that: The controller is used to control the conduction between the second storage battery and the main network when the first storage battery is disconnected from the main network and the detection module is connected to the first storage battery.

3. The battery detection circuit according to claim 1, characterized in that: The battery detection circuit further includes: a first drive circuit and a second drive circuit; the first drive circuit is connected to the controller and the first battery respectively; the second drive circuit is connected to the controller and the second battery respectively; The first driving circuit is used to trigger the connection or disconnection between the first storage battery and the main network, and trigger the connection or disconnection between the first storage battery and the detection module based on the first control signal triggered by the controller; The second driving circuit is used to trigger the connection or disconnection between the second storage battery and the main network based on a second control signal triggered by the controller.

4. The battery detection circuit according to claim 3, characterized in that: The battery detection circuit further includes: a first contactor, the first contactor being connected to the first drive circuit; The first drive circuit is used to generate a first trigger signal based on a first control signal triggered by the controller, so as to trigger the first contactor to trigger the connection or disconnection between the first battery and the main network, and to trigger the connection or disconnection between the first battery and the detection module.

5. The battery detection circuit according to claim 4, characterized in that: The first contactor comprises a first contact and a second contact, the first contact is used to connect to the main network, the first storage battery is connected to the first contact, and the second contact is respectively connected to the first storage battery and the detection module; The first contactor is used to trigger the closing or opening of the first contact and the second contact based on the first trigger signal.

6. The battery detection circuit according to claim 5, characterized in that: The battery detection circuit further includes: a second contactor, the second contactor being connected to the second drive circuit; The second drive circuit is used to generate a second trigger signal based on a second control signal triggered by the controller, so as to trigger the second contactor to trigger conduction or disconnection between the second storage battery and the main network.

7. The battery detection circuit according to claim 6, characterized in that: The second contactor comprises a third contact, the third contact is used to connect to the main network, and the second storage battery is connected to the third contact; The second contactor is used to trigger the closing or opening of the third contact based on the second trigger signal.

8. The battery detection circuit according to claim 7, characterized in that: The battery detection circuit further includes: a time delay circuit, wherein the time delay circuit is connected to the controller and the first drive circuit respectively; The delay circuit is used to delay the transmission of the first control signal triggered by the controller.

9. The battery detection circuit according to claim 8, characterized in that: The detection module includes a sampling resistor and a load circuit, the load circuit is connected to the first battery through the second contact, and the sampling resistor is connected to the load circuit and the first battery respectively; The sampling resistor is used to collect the voltage value and current value of the load circuit.

10. The battery detection circuit according to claim 9, characterized in that: The battery detection circuit also includes a processing module, and the processing module is connected to the sampling resistor; The sampling resistor is used to transmit the collected voltage value and current value to the processing module.

11. The battery detection circuit according to claim 10, characterized in that: The battery detection circuit also includes an alarm module, which is connected to the processing module; The alarm module is used to output alarm information.

12. A battery detection device, characterized in that: The invention comprises a battery detection circuit as described in any one of claims 1 to 11.

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