Storage battery follow current activation detection device and method

Abstract

According to the storage battery follow current activation detection device, method and device provided by the invention, when the charging module is in the floating charging state, open circuit detection can be performed on the storage battery pack, whether an open circuit condition exists in the storage battery pack or not and the condition that the capacity is reduced are judged, and when it is judged that the capacity of the storage battery pack is reduced, activation treatment is performed on the storage battery pack through the activation module; the storage battery pack is recovered to the state closest to the original performance, and the problems of unbalanced single voltage and decline of electric energy storage capability are avoided by timely discovering the conditions of open circuit and capacity reduction of the storage battery pack, so that the service life of the storage battery pack is prolonged. Some existing problems of the storage battery pack are predicted in advance, major accidents and the like of a power system caused by voltage loss of a direct-current system due to storage battery faults are avoided, and normal power supply of the station direct-current power supply system is ensured.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery continuous current activation detection device and method. Background Art

[0002] A storage battery is a device that converts chemical energy directly into electrical energy. It is a battery designed to be rechargeable and is recharged through a reversible chemical reaction. It usually refers to a lead-acid battery, which is a type of battery and belongs to a secondary battery. Its working principle: when charging, it uses external electrical energy to regenerate the internal active substances and store the electrical energy as chemical energy. When it needs to be discharged, it converts the chemical energy into electrical energy output again, such as the mobile phone batteries commonly used in life.

[0003] Battery freewheeling refers to a technical means to ensure that the battery pack can continue to supply power to the outside through a specific circuit design when an open circuit fault occurs in a single cell in the battery pack. This technology is particularly important in places such as substations where high power reliability is required.

[0004] Battery activation refers to restoring the performance of batteries through a specific charging and discharging process, especially for batteries whose performance has deteriorated after long-term use or storage. The activation process usually includes deep charging and discharging of the battery to eliminate sulfides on the plates and restore the battery's capacity and performance.

[0005] The DC system provides reliable DC power for relay protection, automatic devices, control, signal and emergency lighting in the power system. Its reliability is seriously dependent on the operating condition of the battery. The reliability of the battery pack has a vital impact on the safe and stable operation of the power system.

[0006] Existing battery packs often have hidden dangers such as cell voltage imbalance and reduced energy storage capacity due to reduced capacity and open circuit problems, which shortens the service life of the battery pack. Summary of the invention

[0007] The technical problem to be solved by the present application is that the existing battery packs often have hidden dangers such as cell voltage imbalance and reduced energy storage capacity due to reduced capacity and open circuit problems, which shortens the service life of the battery pack.

[0008] In order to solve the above problems, in order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a battery continuous current activation detection device and method.

[0009] In a first aspect, the present invention discloses a battery continuous current activation detection device, which comprises an activation module, an open circuit detection module, and a charging module, wherein the activation module, the open circuit detection module, and the charging module are respectively connected to a battery;

[0010] The charging module supplies power to the battery pack. When the charging module is in a floating charge state, the open circuit detection module detects and processes the open circuit on the battery pack connection line, and the activation module activates the battery pack.

[0011] Preferably, it comprises a control module, and the control module is respectively connected to the activation module, the open circuit detection module and the charging module.

[0012] Preferably, the activation module comprises a monitoring unit and a load unit;

[0013] The monitoring unit detects the real-time power of the battery pack, the load unit is connected to the battery pack, and the battery pack supplies power to the load unit.

[0014] Preferably, a freewheeling module is included, and the freewheeling module is respectively connected to the control module and the battery pack.

[0015] Preferably, the control module comprises a detection unit, and the detection unit detects the open circuit voltage across the battery pack.

[0016] Preferably, the control module comprises a communication unit, and the communication unit is connected to an external system.

[0017] Preferably, the control module comprises a signal receiving unit, and the signal receiving unit receives parameter information and control information set by a user.

[0018] In a second aspect, the present invention discloses a battery continuous current activation detection method, which comprises the following steps:

[0019] Confirm that the system is operating normally, connect the battery pack to the system, start the system floating charge state, and charge the battery at a constant voltage;

[0020] Regularly perform open circuit detection on the battery pack. If the battery has an open circuit, perform freewheeling processing on the battery pack.

[0021] The system periodically reduces the output voltage of the battery pack, and the battery pack is connected to the load unit to run with load. When the parameters of the battery pack reach the preset conditions, the battery pack stops running with load, and the system starts the equalization charging state to charge the battery pack.

[0022] Preferably, the periodic open circuit detection is performed on the battery pack periodically, and when an open circuit occurs in the battery, the battery pack is subjected to a freewheeling process, which specifically includes the following steps:

[0023] When the bus voltage of the system drops rapidly to the voltage setting end value of the battery pack, and the battery current is zero, it is judged that the battery pack is open circuit or the battery pack capacity is seriously insufficient;

[0024] The system records the judgment result in the system's own storage module, the output voltage returns to the floating charge voltage, and an audible and visual warning signal is issued.

[0025] Preferably, the system periodically reduces the output voltage of the battery pack, and the battery pack is connected to the load unit to run with load. When the parameters of the battery pack reach a preset threshold, the battery pack stops running with load, and the system starts the equalization charging state to charge the battery pack, which specifically includes the following steps:

[0026] The system reduces the output voltage of the battery pack, allowing the battery pack to be connected to the load unit, and the battery pack supplies power to the load unit;

[0027] The system monitors the parameters of the battery pack in real time, compares the real-time parameters of the battery pack with the preset thresholds, and stops the battery pack from running with load when the real-time parameters of the battery pack reach the preset thresholds;

[0028] The system increases the input voltage to the battery pack, turns on the equalization charging state, and charges the battery pack.

[0029] The above technical solution provided by this application has the following advantages compared with the prior art:

[0030] The battery continuous current activation detection device and method provided in the present application mention that when the charging module is in a floating charge state, an open circuit detection can be performed on the battery pack to determine whether there is an open circuit in the battery pack and whether the capacity has decreased. When it is determined that the capacity of the battery pack has decreased, the battery pack is activated through the activation module to restore the battery pack to a state closest to the original performance. By promptly detecting the open circuit and reduced capacity of the battery pack, the problems of single cell voltage imbalance and reduced energy storage capacity can be avoided, thereby increasing the service life of the battery pack.

[0031] Furthermore, some existing problems of the battery pack can be predicted in advance to avoid battery failure causing DC system pressure loss and causing major power system accidents, thereby ensuring the normal power supply of the station DC power supply system.

[0032] The method mentions that in the floating charge state, the device implements open circuit detection on the battery pack to determine whether the battery pack has an open circuit and whether the capacity has decreased, regularly performs open circuit detection on the battery pack, and implements freewheeling processing when it is determined that an open circuit occurs, and regularly activates the battery pack to increase the activity inside the battery pack and keep the battery pack in a state closest to its original performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1 A schematic diagram of the structure of a battery freewheeling activation detection device provided in this application;

[0036] Figure 2 A flow chart of the steps of a battery freewheeling activation detection method provided in this application;

[0037] Figure 3 A voltage schematic diagram of an open circuit detection process in a battery freewheeling activation detection method provided in the present application;

[0038] Figure 4 A voltage schematic diagram of activation processing in a battery freewheeling activation detection method provided in the present application.

[0039] Description of reference numerals:

[0040] 1. Battery continuous current activation detection device;

[0041] 11. Activation module; 111. Monitoring unit; 112. Load unit;

[0042] 12. Open circuit detection module;

[0043] 13. Control module; 131. Detection unit; 132. Communication unit; 133. Signal receiving unit;

[0044] 14. Charging module. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0046] First, see Figure 1The present invention provides a battery continuous current activation detection device 1, which automatically outputs a voltage regularly to realize the discharge of a battery pack. Due to the long-term use of the battery, the battery pack capacity may decrease and the circuit may be open. These problems affect the normal operation of the battery pack. At the same time, these problems are difficult to find in daily life and are usually exposed only after an accident occurs. Therefore, the battery continuous current activation detection device 1 is needed to perform continuous current processing and activation processing on the battery pack.

[0047] The battery continuous current activation detection device 1 includes an activation module 11, an open circuit detection module 12, and a charging module 14. The activation module 11, the open circuit detection module 12 and the charging module 14 are respectively connected to batteries. The charging module 14 supplies power to the battery pack. When the charging module 14 is in a floating charge state, the open circuit detection module 12 detects the open circuit on the battery pack connection line and performs processing, and the activation module 11 performs activation processing on the battery pack.

[0048] Specifically, when the charging module 14 is in a floating charge state, an open circuit detection can be performed on the battery pack to determine whether there is an open circuit in the battery pack and whether the capacity has decreased. When it is determined that the capacity of the battery pack has decreased, the battery pack is activated through the activation module 11 to restore the battery pack to a state closest to its original performance. By promptly detecting the open circuit and reduced capacity of the battery pack, problems such as single cell voltage imbalance and reduced energy storage capacity can be avoided, thereby increasing the service life of the battery pack.

[0049] Furthermore, some existing problems of the battery pack can be predicted in advance to avoid battery failure causing loss of pressure in the DC charging system and causing major accidents in the power system, thereby ensuring the normal power supply of the DC charging system.

[0050] Furthermore, the reliability judgment of the battery pack can be remotely controlled and unattended, and the operation is safe and reliable, which can avoid battery failure causing the DC charging system to lose pressure and cause major accidents in the power system, ensure the normal power supply of the DC charging system, and improve the operational reliability and automation level of the power system. That is, the automatic voltage reduction method is used to timely discover the hidden danger of insufficient independent power supply capacity of the DC battery pack.

[0051] The battery freewheeling activation detection device 1 comprises a control module 13 and a freewheeling module. The control module 13 is respectively connected to the activation module 11 , the open circuit detection module 12 and the charging module 14 , and the freewheeling module is respectively connected to the control module 13 and the battery pack.

[0052] Specifically, the freewheeling module is used to perform freewheeling processing for the battery pack, so that after the battery pack is open-circuited, a small current can be continued to allow the battery pack to work normally. At the same time, an electrical signal is sent to the control module 13 and transmitted to the external system, so that it can transmit the abnormal situation of the open circuit of the battery pack to the operator.

[0053] The activation module 11 includes a monitoring unit 111 and a load unit 112 . The monitoring unit 111 detects the real-time power of the battery pack. The load unit 112 is connected to the battery pack, and the battery pack supplies power to the load unit 112 .

[0054] Specifically, the monitoring unit 111 determines the real-time power of the battery pack through the voltage and current values ​​output by the battery pack. The load unit 112 can consume the power of the battery pack to achieve the effect of discharging the battery pack. The activation module 11 can periodically charge and discharge the battery pack so that the capacity of the battery pack can be restored to a state close to the original state, thereby restoring the battery performance.

[0055] The control module 13 includes a detection unit 131 , a communication unit 132 , and a signal receiving unit 133 . The communication unit 132 is connected to an external system, and the signal receiving unit 133 receives parameter information and control information set by a user.

[0056] Specifically, the detection unit 131 detects the open circuit voltage at both ends of the battery pack, monitors the charging and discharging current of the battery pack and the voltage conditions of each segment in real time, and determines whether the battery pack is open-circuited by monitoring the open circuit voltage of the battery pack. When the open circuit voltage of the battery pack drops rapidly and the current of the battery pack is zero, it can be determined that the battery pack is open-circuited. If the open circuit voltage drops and the current decreases, it can be determined that the internal capacity of the battery pack decreases and continuous current processing is required. The communication unit 132 uses the RS485 communication protocol to communicate with the external system, and sends out the parameters and related data information of the battery pack obtained in the device, which can facilitate data communication between the device and the external system, such as the upper system. In the upper system, the message transmitted by the connection device can be better presented to the operator, so that the operator can obtain the information of the battery pack connected to the current device, as well as the subsequent processing and operation. The device includes information input mechanisms such as a touch screen and a control panel. The operator uses the information input mechanisms to convert the operations required to process the battery pack into electrical signals and input them into the control module 13 of the device. The signal receiving unit 133 is connected to these information input mechanisms to receive information related to the operator's operating steps to facilitate subsequent operations of the device.

[0057] Second, see Figure 2-4 The present invention discloses a battery continuous current activation detection method, which comprises the following steps:

[0058] Step S1: Confirm that the system is operating normally, connect the battery pack to the system, start the floating charge state of the system, and charge the battery at a constant voltage;

[0059] Step S2: regularly perform periodic open circuit detection on the battery pack, and if the battery has an open circuit, perform freewheeling processing on the battery pack;

[0060] Step S3: The system periodically reduces the output voltage of the battery pack, and the battery pack is connected to the load unit to run with load. When the parameters of the battery pack reach the preset conditions, the battery pack stops running with load, and the system starts the equalization charging state to charge the battery pack.

[0061] Specifically, in step S1, it is necessary to first confirm that the entire system is in a normal operating state, then connect the battery pack to the system, and finally the system enters a floating charge state to charge the battery at a fixed voltage. Confirming that the system is operating normally is to ensure the safety and effectiveness of subsequent battery charging operations, and to avoid system failures that affect battery charging or cause other risks. In addition, charging at a constant voltage in a floating charge state can maintain the battery in a fully charged state, compensate for the self-discharge loss of the battery, and ensure that the battery can provide sufficient power at any time.

[0062] Specifically, in step S2, the battery pack is tested for open circuits at a certain time period. Periodic open circuit testing helps to timely discover possible connection problems or internal open circuit faults in the battery pack. When an open circuit is detected in the battery, the battery pack is subjected to continuous current processing. Once an open circuit is found, the continuous current processing can avoid charging interruptions caused by the open circuit or other situations that may affect the operation of the system, ensuring that the battery pack can continue to work normally. Regular testing can detect problems at the early stage of a fault, improve the reliability and stability of the system, and the continuous current processing can quickly resolve the impact of the open circuit problem and reduce interference with the overall operation of the system.

[0063] Specifically, in step S3, the system periodically reduces the output voltage to the battery pack so that the battery pack is connected to the load unit and starts to run with load. By reducing the output voltage to allow the battery pack to run with load, the performance of the battery pack under actual load can be tested, including its discharge capacity, etc. When the relevant parameters of the battery pack reach the preset conditions, the battery pack stops running with load, and the system starts the equalization charging state to charge the battery pack. When the parameters reach the preset conditions, the load operation is stopped and the equalization charging state is started, which helps to balance the power of each battery in the battery pack and prevent individual batteries from being overcharged or undercharged. The equalization charging state can improve the overall charging effect of the battery pack, optimize the performance of the battery pack, and extend the service life of the battery pack.

[0064] It can be understood that in the floating charge state, the system implements open circuit detection on the battery pack to determine whether the battery pack has an open circuit and whether the capacity has decreased. The battery pack is regularly tested for open circuits. If an open circuit is determined, the system implements freewheeling processing and regularly activates the battery pack to increase the activity inside the battery pack and keep the battery pack in a state closest to its original performance.

[0065] The step S2 specifically includes the following steps:

[0066] Step S21: When the bus voltage of the system drops rapidly to the voltage setting end value of the battery pack, and the battery current is zero, it is determined that the battery pack is open circuit or the battery pack capacity is seriously insufficient;

[0067] Step S22: the system records the judgment result in the storage module of the system, the output voltage is restored to the floating charge voltage, and an audible and visual warning signal is issued.

[0068] Monitor the bus voltage of the system. When the bus voltage drops rapidly to the voltage setting end value of the battery pack, check whether the battery current is zero. If the above two conditions are met, the battery pack is judged to be open circuit or the battery pack capacity is seriously insufficient. The monitoring of the bus voltage can reflect the power supply status of the entire system. Its rapid drop may indicate that there is a serious problem with the battery pack. Checking the condition that the battery current is zero can help further confirm the abnormal state of the battery pack from the perspective of current, because under normal circumstances, the battery should provide current when the bus voltage drops. This judgment mechanism can accurately identify possible serious faults of the battery pack (open circuit or serious lack of capacity), thereby providing a basis for subsequent processing. Quickly and accurately locate the problem, can timely discover the serious fault of the battery pack, and avoid greater impact on the system due to the battery pack failure. In addition, by setting clear judgment conditions, the possibility of misjudgment is reduced and the reliability of judgment is improved. The judgment result is recorded in the system's built-in storage module, and the output voltage is restored to the floating charge voltage. Restoring the output voltage to the floating charge voltage can provide a relatively stable voltage environment for subsequent processing of the battery pack while ensuring the basic power supply stability of the system, and send out an audible and visual warning signal. The audible and visual warning signal can promptly notify relevant personnel that there is a problem with the battery pack in the system so that corresponding measures can be taken in time.

[0069] Step S3 specifically includes the following steps:

[0070] Step S31: the system reduces the output voltage of the battery pack, connects the battery pack to the load unit, and the battery pack supplies power to the load unit;

[0071] Step S32: the system monitors the parameters of the battery pack in real time, compares the real-time parameters of the battery pack with the preset threshold value, and stops the battery pack from running with load when the real-time parameters of the battery pack reach the preset threshold value;

[0072] Step S33: the system increases the input voltage to the battery pack, turns on the equalization charging state, and charges the battery pack.

[0073] Specifically, the battery pack is connected to the load unit, and the load unit is powered by the battery pack, thereby achieving the effect of discharging the battery pack. The battery pack can be activated by charging and discharging the battery pack multiple times, and the parameters of the battery pack can be monitored in real time. It can be determined whether the battery pack has recovered to a state close to its original state by judging between the parameters and preset thresholds. After the activation process is completed, the input voltage of the battery pack returns to normal, the equalization charging state is started, and the battery pack operates normally.

[0074] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0081] The above is a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A battery continuous current activation detection device, characterized in that: It includes an activation module, an open circuit detection module, and a charging module, wherein the activation module, the open circuit detection module, and the charging module are connected to a storage battery respectively; The charging module supplies power to the battery pack. When the charging module is in a floating charge state, the open circuit detection module detects and processes the open circuit on the battery pack connection line, and the activation module activates the battery pack.

2. The device according to claim 1, characterized in that It includes a control module, which is respectively connected to the activation module, the open circuit detection module and the charging module.

3. The device according to claim 1, characterized in that The activation module includes a monitoring unit and a load unit; The monitoring unit detects the real-time power of the battery pack, the load unit is connected to the battery pack, and the battery pack supplies power to the load unit.

4. The device according to claim 2, characterized in that It includes a freewheeling module, which is respectively connected to the control module and the battery pack.

5. The device according to claim 2, characterized in that The control module includes a detection unit, which detects the open-circuit voltage across the battery pack.

6. The device according to claim 2, characterized in that The control module includes a communication unit, and the communication unit is connected to an external system.

7. The device according to claim 2, characterized in that The control module includes a signal receiving unit, which receives parameter information and control information set by a user.

8. A battery continuous current activation detection method, characterized in that: The following steps are involved: Confirm that the system is operating normally, connect the battery pack to the system, start the system floating charge state, and charge the battery at a constant voltage; Regularly perform open circuit detection on the battery pack. If the battery has an open circuit, perform freewheeling processing on the battery pack. The system periodically reduces the output voltage of the battery pack, and the battery pack is connected to the load unit to run with load. When the parameters of the battery pack reach the preset conditions, the battery pack stops running with load, and the system starts the equalization charging state to charge the battery pack.

9. The method according to claim 8, characterized in that: The method of periodically performing open circuit detection on the battery pack and performing freewheeling processing on the battery pack when an open circuit occurs in the battery pack specifically includes the following steps: When the bus voltage of the system drops rapidly to the voltage setting end value of the battery pack, and the battery current is zero, it is judged that the battery pack is open circuit or the battery pack capacity is seriously insufficient; The system records the judgment result in the system's own storage module, the output voltage returns to the floating charge voltage, and an audible and visual warning signal is issued.

10. The method according to claim 8, characterized in that: The system periodically reduces the output voltage of the battery pack, and the battery pack is connected to the load unit to run with load. When the parameters of the battery pack reach the preset threshold, the battery pack stops running with load, and the system starts the equalization charging state to charge the battery pack. Specifically, the following steps are included: The system reduces the output voltage of the battery pack, allowing the battery pack to be connected to the load unit, and the battery pack supplies power to the load unit; The system monitors the parameters of the battery pack in real time, compares the real-time parameters of the battery pack with the preset thresholds, and stops the battery pack from running with load when the real-time parameters of the battery pack reach the preset thresholds; The system increases the input voltage to the battery pack, turns on the equalization charging state, and charges the battery pack.

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