Control circuit, charging control method and start-stop power supply

Abstract

The invention provides a control circuit, a charging control method and a start-stop power supply, and relates to the technical field of battery control, the control circuit comprises a connecting end, an electric energy acquisition module, a first switch module and a control module; the connecting end comprises a first connecting end and a second connecting end, the first connecting end is connected with the generator, and the second connecting end is connected with the energy storage module; the electric energy acquisition module is connected between the first connecting end and the second connecting end and is used for acquiring charging information corresponding to electric energy transmitted to the energy storage module by the generator; the first switch module is connected between the first connecting end and the second connecting end, and the first switch module is used for controlling on-off of power supply of the generator to the energy storage module; the control module is connected with the electric energy acquisition module and the first switch module and used for controlling on-off of the first switch module according to the charging information. The invention aims to prevent the coil temperature of the generator from exceeding a safety range, thereby ensuring that the generator can stably charge the energy storage module.

Description

Technical Field

[0001] This application relates to the field of battery control technology, and in particular to a control circuit, a charging control method, and a start-stop power supply. Background Technology

[0002] Currently, prolonged charging of car batteries by alternators can easily lead to coil burnout, subsequently damaging the alternator itself. The inventors' research revealed that this is due to current alternator charging technology. The alternator uses constant power direct charging, with the charging power entirely dependent on the alternator's inherent output characteristics (such as rated power corresponding to engine speed). The charging current is not optimized for the type of car battery. When the battery's internal resistance is low, the charging current can easily become too high, causing alternator overload and overheating during prolonged charging, resulting in coil burnout and alternator damage.

[0003] Therefore, how to prevent the generator coil temperature from exceeding the safe range, thereby ensuring that the generator can stably charge the energy storage module, has become an urgent technical problem to be solved. Summary of the Invention

[0004] The main purpose of this application is to provide a control circuit, a charging control method, and a start-stop power supply, which aims to prevent the coil temperature of the generator from exceeding the safe range, thereby ensuring that the generator can stably charge the energy storage module.

[0005] In a first aspect, this application provides a control circuit, comprising: a connection terminal, a power acquisition module, a first switch module, and a control module; the connection terminal includes a first connection terminal and a second connection terminal, the first connection terminal being connected to a generator, and the second connection terminal being connected to an energy storage module; the power acquisition module is connected between the first connection terminal and the second connection terminal, and is used to acquire charging information corresponding to the power transmitted from the generator to the energy storage module; the first switch module is connected between the first connection terminal and the second connection terminal, and is used to control the on / off state of power supply from the generator to the energy storage module; the control module is connected to both the power acquisition module and the first switch module, and is used to control the on / off state of the first switch module according to the charging information.

[0006] Secondly, this application provides a charging control method applied to the control circuit in the first aspect embodiment. The method includes: acquiring charging information corresponding to the electrical energy transmitted from the generator to the energy storage module; controlling the on / off state of the first switch module according to the charging information to execute an intermittent charging strategy; wherein the charging information includes the charging amount, and the intermittent charging strategy includes: when the charging amount reaches a first preset amount value, controlling the first switch module to disconnect to disconnect the electrical connection between the generator and the energy storage module, and recording the disconnection duration; when the disconnection duration reaches a preset duration, controlling the first switch module to turn on, reacquiring the charging amount, and continuing to execute the intermittent charging strategy according to the charging amount.

[0007] Thirdly, this application provides a start-stop power supply, including: a housing, an energy storage module, terminals, and a control circuit as described in the first aspect embodiment, wherein the housing includes at least a shell; the energy storage module is disposed within the shell; the terminals are disposed on one side of the housing and electrically connected to the energy storage module; and the control circuit is used to control the on / off supply of power from the generator to the energy storage module.

[0008] According to the control circuit, charging control method, and start / stop power supply provided in this application, the control circuit includes: a connection terminal, a power acquisition module, a first switch module, and a control module. The control module is connected to both the power acquisition module and the first switch module, and is used to control the on / off state of the first switch module based on charging information. Firstly, the circuit segment formed by the connection between the first switch module and the power acquisition module constitutes part of the power supply circuit. The power supply circuit is used to realize the power transfer between the generator and the energy storage module. By controlling the on / off state of the first switch module, the on / off state of the power supply from the generator to the energy storage module can be indirectly controlled. Secondly, the control module in the control circuit can be used to control the first switch module based on charging information. By switching the module on and off, the coil temperature of the generator is always kept within a safe range. In summary, the control circuit provided in this application enables commercially available generators to be compatible with different types of energy storage modules for charging. Furthermore, during generator operation, it prevents the generator coil temperature from exceeding the safe range, thus ensuring stable charging of the energy storage module. In addition, compared to related technologies that redesign the generator's internal structure to accommodate the temperature detection module and prevent the generator coil from burning out, this application's solution does not require redesigning the generator's internal structure, resulting in higher reliability and significantly reduced costs. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A system architecture diagram of a first control circuit provided in an embodiment of this application; Figure 2 A system architecture diagram of a second control circuit provided in an embodiment of this application; Figure 3 A system architecture diagram of a third control circuit provided in an embodiment of this application; Figure 4 A system architecture diagram of a fourth control circuit provided in an embodiment of this application; Figure 5 A connection diagram of the first switching unit, the second switching unit, and the current sampling unit in a control circuit provided in an embodiment of this application; Figure 6 A circuit schematic diagram of the first driving unit in a control circuit provided in an embodiment of this application; Figure 7 A circuit schematic diagram of the battery management module in a control circuit provided in an embodiment of this application; Figure 8 This is a diagram showing the connection relationship between the control module and the heating module in a control circuit provided in an embodiment of this application. Figure 9 A flowchart illustrating a charging control method provided in one embodiment of this application; Figure 10 A flowchart illustrating another charging control method provided in an embodiment of this application; Figure 11 This application provides a schematic diagram of the structure of a start-stop power supply according to one embodiment.

[0011] Figure label: 100. Control circuit; A. First connection terminal; B. Second connection terminal; 200. Energy storage module; 110. Power acquisition module; 111. Current sampling unit; 112. Battery management unit; 120. First switch module; 121. First switch unit; 122. First drive unit; 130. Control module; 140. Second switch module; 141. Second switch unit; 142. Second drive unit; 150. Transient voltage suppression module; 160. First temperature detection module; 170, heating module; 171, heating element; 172, first heating switch unit; 173, second heating switch unit; 174, first heating drive unit; 175, second heating drive unit; 180, second temperature detection module; 1000, outer casing; 200, energy storage module; 100, control circuit; 310, first pole; 320, second pole. Detailed Implementation

[0012] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0013] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0014] The inventors discovered that after a generator charges a car battery for an extended period, the generator coil is prone to burnout, which in turn damages the generator. Through research, the inventors found that this is due to the current generator charging technology on the market. The generator uses constant power direct charging, and the charging power depends entirely on the generator's inherent output characteristics (such as the rated power corresponding to the speed). The charging current is not optimized for the type of car battery. When the battery's internal resistance is low, the charging current is prone to being too high. Prolonged charging leads to generator power overload and excessive temperature, causing the generator coil to burn out and damaging the generator.

[0015] Based on this, embodiments of this application provide a control circuit, a charging control method, and a start-stop power supply, which can prevent the coil temperature of the generator from exceeding the safe range, thereby ensuring that the generator can stably charge the energy storage module.

[0016] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0017] Reference Figure 1In a first aspect, this application provides a control circuit 100, which includes: a connection terminal, an energy acquisition module 110, a first switch module 120, and a control module 130; the connection terminal includes a first connection terminal B and a second connection terminal A, the first connection terminal B being connected to a generator, and the second connection terminal A being connected to an energy storage module 200; the energy acquisition module 110 is connected between the first connection terminal B and the second connection terminal A, and is used to acquire charging information corresponding to the energy transmitted from the generator to the energy storage module 200; the first switch module 120 is connected between the first connection terminal B and the second connection terminal A, and is used to control the on / off state of power supply from the generator to the energy storage module 200; the control module 130 is connected to the energy acquisition module 110 and the first switch module 120 respectively, and is used to control the on / off state of the first switch module 120 according to the charging information.

[0018] For example, the first switch module 120 is connected in series between the first connection terminal B and the second connection terminal A, and the power acquisition module 110 is connected in series with the first switch module 120. The circuit segment formed by the connection of the first switch module 120 and the power acquisition module 110 constitutes part of the power supply circuit. The power supply circuit is used to realize the power transmission between the generator and the energy storage module 200.

[0019] For example, the control module 130 is connected to the power acquisition module 110 and the first switch module 120 respectively. The control module 130 controls the on / off state of the first switch module 120 according to the charging information, including: if the charging information is detected to be inconsistent with the preset charging conditions, the control module 130 controls the first switch module 120 to disconnect, so as to disconnect the power supply circuit; if the charging information is detected to be consistent with the preset charging conditions, the control module 130 controls the first switch module 120 to conduct, so as to conduct the power supply circuit. Wherein, if the power supply circuit is disconnected, power cannot be transferred between the generator and the energy storage module 200; if the power supply circuit is conducted, power can be transferred between the generator and the energy storage module 200.

[0020] For example, an experiment can be conducted in a safe environment (e.g., a laboratory) to charge the energy storage module 200 with a generator. The coil temperature data of the generator under different continuous working durations can be detected, and the charging information corresponding to the electrical energy transmitted by the generator to the energy storage module 200 under the continuous working duration when the generator coil temperature reaches the highest safe temperature can be recorded. This charging information can be used as preset charging information.

[0021] It should be noted that different types of energy storage modules 200 can also obtain preset charging information suitable for the energy storage module 200 by charging the energy storage module 200 with the generator mentioned above.

[0022] Optionally, the energy storage module 200 includes a lithium battery, and this application does not impose too many restrictions on the type of battery installed inside the energy storage module 200.

[0023] For example, controlling the on / off state of the first switch module 120 based on charging information includes: controlling the on / off state of the first switch module 120 based on whether the charging information meets preset charging conditions. Controlling the on / off state of the first switch module 120 based on whether the charging information meets preset charging conditions includes: if the charging information does not meet the preset charging conditions, controlling the first switch module 120 to disconnect; otherwise, controlling the first switch module 120 to conduct. The preset charging conditions are as follows: the difference between the power data corresponding to the preset charging information and the power data corresponding to the charging information falls within a first preset power range, the minimum value of the first preset power range is greater than zero, and the preset charging information is associated with the maximum safe temperature information of the generator coil. Therefore, if the charging information is detected to meet the preset charging conditions, it indicates that the coil temperature of the corresponding generator will not exceed the maximum safe temperature, and the first switch module 120 can be turned on to ensure that the generator can safely supply power to the energy storage module 200; if the charging information is detected to not meet the preset charging conditions, it indicates that the coil temperature of the generator is about to exceed the maximum safe temperature and there is a risk of it being burned out. The first switch module 120 can be turned off, the generator stops supplying power to the energy storage module 200, and the coil temperature of the generator can be reduced to a safe temperature range.

[0024] Optionally, the power data corresponding to the preset charging information is 12% of the total energy storage capacity of the energy storage module 200. The minimum value of the first preset power range is 2% of the total energy storage capacity of the energy storage module 200, and the maximum value of the first preset power range is 12% of the total energy storage capacity of the energy storage module 200. In this application, the minimum value of the first preset power range is not limited too much.

[0025] Understandably, if the minimum value of the first preset power range is set to zero, during the process of the generator charging the energy storage module 200, the first switch module 120 will only be controlled to disconnect when the power data corresponding to the charging information is equal to the power data corresponding to the preset charging information. This could easily cause the generator coil temperature to exceed the maximum safe temperature. Therefore, by setting the minimum value of the first preset power range to a value greater than zero, the generator coil temperature can be controlled within a safe range during the process of the generator charging the energy storage module 200.

[0026] It should be noted that, in order to address the technical problem that current generator charging technologies on the market are not optimized for different types of energy storage modules 200, leading to the easy burnout of generator coils, some related technologies have proposed solutions that involve setting up temperature detection modules inside the generator coils to control the start and stop of generator power supply to the energy storage module 200 based on the detection data from these modules. While theoretically this can prevent generator coil burnout, it presents several problems in practical applications. For example, during generator operation, the internal rotor rotates at high speed, making it impossible to wire a temperature detection module. Wireless temperature detection modules are not only expensive but also have poor anti-interference capabilities. Oil, dust, and other substances inside the generator can easily cover the temperature detection module, leading to inaccurate detection results, and the generator coils are still prone to burnout during operation. Furthermore, to improve the detection accuracy of the temperature detection module, the internal structure of the generator needs to be redesigned to accommodate the installation of the temperature detection module and improve its detection accuracy. This not only results in high development, design, and mass production costs but may also sacrifice some of the generator's charging performance due to the alteration of the generator's internal structure.

[0027] It is understood that in this application, the control circuit 100 includes: a connection terminal, a power acquisition module 110, a first switch module 120, and a control module 130. The control module 130 is connected to both the power acquisition module 110 and the first switch module 120, and is used to control the on / off state of the first switch module 120 according to charging information. First, the circuit segment formed by the connection between the first switch module 120 and the power acquisition module 110 constitutes part of the power supply circuit. The power supply circuit is used to realize the power transmission between the generator and the energy storage module 200. By controlling the on / off state of the first switch module 120, the on / off state of the generator supplying power to the energy storage module 200 can be indirectly realized. Second, the control module 130 in the control circuit 100 can be used to control the on / off state of the first switch module 120 according to charging information. This ensures that the generator coil temperature is always kept within a safe range. In summary, the control circuit 100 provided in this application enables commercially available generators to charge different types of energy storage modules 200 (e.g., energy storage modules 200 composed of low-internal-resistance lithium batteries). Furthermore, during generator operation, it prevents the generator coil temperature from exceeding a safe range, thus ensuring stable charging of the energy storage module 200. In addition, compared to related technologies that redesign the generator's internal structure to accommodate a temperature detection module and prevent generator coil burnout, this application's solution does not require redesigning the generator's internal structure, resulting in higher reliability and significantly reduced production and development costs.

[0028] In some embodiments, refer to Figure 2 The power acquisition module 110 includes a current sampling unit 111 and a battery management unit 112. The current sampling unit 111 is connected between the first connection terminal B and the second connection terminal A, and is used to collect the current data corresponding to the power transmitted from the generator to the energy storage module 200. The battery management unit 112 is connected to the current sampling unit 111 and the control module 130 respectively, and is used to acquire the current data, generate charging information based on the current data, and send it to the control module 130.

[0029] For example, refer to Figure 5 The current sampling unit 111 is a resistor module. The current sampling unit 111 is connected in series with the first switch module 120. The circuit segment formed by the connection of the first switch module 120 and the current sampling unit 111 constitutes part of the power supply circuit. The power supply circuit is used to realize the power transmission between the generator and the energy storage module 200.

[0030] For example, the battery management unit 112 is used to acquire current data and generate charging information based on the current data. The charging information includes the charging capacity. Specifically, the battery management unit 112 can convert the current data collected by the current sampling unit 111 into the charging capacity according to the ampere-hour integration algorithm. Further, the battery management unit 112 sends the charging capacity to the control module 130 so that the control module 130 can control the on / off state of the first switch module 120 according to the charging capacity, thereby ensuring that the coil temperature of the generator is always controlled within a safe temperature range.

[0031] It should be noted that the battery management unit 112 includes a BMS device U1, which is connected to the current sampling unit 111 via connection terminal CAR-L and connection terminal CAR-H, as shown below. Figure 7 As shown.

[0032] In some embodiments, the control module 130 is used to control the on / off state of the first switch module 120 according to charging information to execute an intermittent charging strategy. The charging information includes the charging capacity, and the intermittent charging strategy includes: When the charging power reaches the first preset power value, the first switch module 120 is controlled to disconnect, thereby disconnecting the electrical connection between the generator and the energy storage module 200, and the disconnection duration is recorded. When the disconnection time reaches the preset time, the first switch module 120 is turned on to reacquire the charging power and continue to execute the intermittent charging strategy based on the newly acquired charging power.

[0033] Optionally, if the power data corresponding to the preset charging information is 12% of the total energy storage capacity of the energy storage module 200, the minimum value of the first preset power range is 2% of the total energy storage capacity of the energy storage module 200, and the maximum value of the first preset power range is 12% of the total energy storage capacity of the energy storage module 200, the first preset power can be set to 10% of the total energy storage capacity of the energy storage module 200. In this application, the specific value of the first preset power is not limited too much.

[0034] For example, when the charging power is less than 10% of the total energy storage capacity of the energy storage module 200, the difference between the power data corresponding to the preset charging information and the charging power is greater than 2%, and the difference falls within the first preset power range, that is, the charging power meets the preset charging conditions, indirectly indicating that the coil temperature of the generator is lower than the maximum safe temperature, and the first switch module 120 is kept in a continuously conducting state; when the charging power reaches 10% of the total energy storage capacity of the energy storage module 200, the difference between the power data corresponding to the preset charging information and the charging power is 2%, and the difference is about to exceed the first preset power range, indicating that the charging power is about to fail the preset charging conditions, and the first switch module 120 is controlled to disconnect, so as to disconnect the electrical connection between the generator and the energy storage module 200, which can effectively prevent the coil temperature of the generator from exceeding the maximum safe temperature.

[0035] Optionally, the preset duration is 10 minutes. When the disconnection time reaches 10 minutes, the first switch module 120 is turned on to reacquire the charging power and continue to execute the intermittent charging strategy based on the newly acquired charging power. The preset duration can be determined based on the time it takes for the generator to drop to the preset temperature during historical experiments. In this application, the specific value of the preset duration is not limited too much.

[0036] For example, during the 10-minute period when the first switch module 120 is disconnected, the temperature of the generator can be further reduced to a relatively low temperature value within the safe temperature range. For instance, when the disconnection time reaches 10 minutes, it can be reduced to the ambient temperature, and the first switch module 120 can be turned on to control the generator to supply power to the energy storage module 200, reacquire charging power, and continue to execute the intermittent charging strategy according to the newly acquired charging power. This cycle continues until the energy storage module 200 is fully charged.

[0037] Understandably, the control module 130 is used to control the on / off state of the first switch module 120 based on the charging information to execute an intermittent charging strategy, thereby controlling the generator to intermittently supply power to the energy storage module 200, reasonably controlling the charging amount of the generator during each continuous operation, so that the maximum operating temperature of the generator does not exceed the maximum safe temperature, thereby ensuring that the generator operates within a safe temperature range each time, effectively avoiding the situation where the coil temperature of the energy storage module 200 is too high due to the continuous high current of the generator charging, which could burn out the generator.

[0038] In some embodiments, refer to Figure 4 The first switch module 120 includes a first switch unit 121 and a first drive unit 122. The first switch unit 121 is connected between the first connection terminal B and the second connection terminal A. The first drive unit 122 is connected to the control module 130 and the first switch unit 121 respectively. The control module 130 is used to control the first drive unit 122 to work according to the charging information to switch the on / off state of the first switch unit 121.

[0039] Optional, refer to Figure 5 The first switching unit 121 is the first MSO transistor Q25. The first switching unit 121 can also be a relay or other electronically controlled switching element. In this application, the type of the first switching unit 121 is not limited too much.

[0040] It should be noted that the first switch unit 121 is connected between the first connection terminal B and the second connection terminal A, thus connecting to a high-voltage, high-current power supply circuit. If it were directly connected to the control module 130, on the one hand, the driving voltage of the first switch unit 121 would be too high, and the low-voltage weak current signal output by the control module 130 would not be able to drive the first switch unit 121 to switch on or off. On the other hand, it would cause the surge and peak voltage of the high-voltage power supply circuit to flow back into the control module 130, causing damage to the control module 130. Based on this, by setting a first drive unit 122, which is connected to both the control module 130 and the first switch unit 121, on the one hand, the first drive unit 122 can convert the low-voltage weak current signal output by the control module 130 into a high-voltage drive signal, thereby enabling the control module 130 to indirectly and effectively control the first switch unit 121. On the other hand, when the first switch unit 121 experiences a short circuit, overcurrent, or other fault, the first drive unit 122 can act as an isolation unit, preventing the fault current from flowing directly to the control module 130 and reducing the risk of damage to the control module 130.

[0041] For example, the first driving unit 122 includes multiple switching elements, such as MOSFETs and transistors. Figure 6 As shown, the low-voltage weak electrical signal output by the control module 130 is converted into a strong electrical drive signal through the amplification function of the transistor.

[0042] It should be noted that, referring to Figure 5 , Figure 6 The control module 130 is connected to the input terminal CHG_SW of the first drive unit 122, and the output terminal CHG_EN of the first drive unit 122 is connected to the first switch unit 121.

[0043] For example, controlling the first driving unit 122 to switch the on / off state of the first switching unit 121 based on charging information includes: if the charging information is detected to meet the preset charging conditions, outputting a first control signal to the first driving unit 122 to control the first driving unit 122 to output a charging control signal, such as a high-level signal, so that the first switching unit 121 is turned on; if the charging information is detected to not meet the preset charging conditions, outputting a second control signal to the first driving unit 122 to control the first driving unit 122 to output a power-off control signal, such as a low-level signal, so that the first switching unit 121 is turned off.

[0044] In some embodiments, refer to Figure 3 The power acquisition module 110 is also used to acquire discharge information corresponding to the power transmitted from the energy storage module 200 to the generator; the control circuit 100 also includes: a second switch module 140, which is connected between the first connection terminal B and the second connection terminal A. The second switch module 140 is used to control the on / off of power supply from the energy storage module 200 to the generator. Furthermore, the second switch module 140 is connected to the control module 130, which is also used to control the on / off of the second switch module 140 according to the discharge information.

[0045] For example, the second switch module 140 is connected in series with the first switch module 120 and the power acquisition module 110 respectively. The circuit segment formed by the connection of the first switch module 120, the power acquisition module 110 and the second switch module 140 constitutes part of the power supply circuit. The power supply circuit is used to realize the power transmission between the generator and the energy storage module 200.

[0046] It should be noted that controlling the on / off state of the second switch module 140 based on the discharge information includes: if the discharge information does not meet the preset discharge conditions, controlling the second switch module 140 to disconnect so that the power supply circuit is disconnected, preventing the energy storage module 200 from further charging the generator or load; if the discharge information meets the preset discharge conditions, controlling the second switch module 140 to conduct so that the power supply circuit is conducted.

[0047] For example, the discharge information includes the discharge current, and the preset discharge condition is that the discharge current data is greater than the preset discharge current data.

[0048] It should be noted that the control module 130 is also used to detect the type of information collected by the power acquisition module 110. If it is charging information, it is used to control the on / off state of the first switch module 120 according to the charging information, and control the second switch module 140 to remain in the conducting state, so that the first switch module 120 can play a charging protection role. If it is discharging information, it is used to control the on / off state of the second switch module 140 according to the discharging information, and control the first switch module 120 to remain in the conducting state, so that the second switch module 140 can play a discharging protection role.

[0049] In some embodiments, refer to Figure 3 The control circuit 100 also includes a transient voltage suppression module 150, which is connected to the second switch module 140.

[0050] It is understandable that the transient voltage suppression module 150 is a high-power absorption device. When the two ends connected to the second switch module 140 and the transient voltage suppression module 150 exceed the breakdown voltage of the transient voltage suppression module 150, the transient voltage suppression module 150 will break down and clamp the voltage across the second switch module 140, effectively preventing the second switch module 140 from being turned off due to excessive discharge current, and avoiding the generation of reverse peak voltage that breaks down the withstand voltage of the second switch module 140.

[0051] For example, the transient voltage suppression module 150 includes a first transient voltage suppression transistor TVS1 and a second transient voltage suppression transistor TVS2. The first transient voltage suppression transistor TVS1 is connected in parallel with the second switching unit 141 in the second switching module 140, and the second transient voltage suppression transistor TVS2 is connected in parallel with the first transient voltage suppression transistor TVS1.

[0052] Understandably, by setting two transient voltage suppressor transistors, if one transient voltage suppressor transistor fails, the other transient voltage suppressor transistor can still protect the second switching module 140, thereby improving the operational stability of the control circuit.

[0053] In some embodiments, refer to Figure 4 The second switch module 140 includes a second switch unit 141 and a second drive unit 142. The second switch unit 141 is connected between the first connection terminal B and the second connection terminal A. The second drive unit 142 is connected to the control module 130 and the second switch unit 141 respectively. The control module 130 is used to control the second drive unit 142 to work according to the discharge information to switch the on / off state of the second switch unit 141.

[0054] Optional, refer to Figure 5The second switching unit 141 is the second MSO transistor Q26. The second switching unit 141 can also be a relay or other electronically controlled switching element. In this application, the type of the second switching unit 141 is not limited too much.

[0055] It should be noted that the second switching unit 141 is connected between the first connection terminal B and the second connection terminal A, thus connecting to a high-voltage, high-current power supply circuit. If it were directly connected to the control module 130, on the one hand, the driving voltage of the second switching unit 141 would be too high, and the low-voltage weak current signal output by the control module 130 would not be able to drive the second switching unit 141 to switch on or off. On the other hand, it would cause surges and voltage spikes in the high-voltage power supply circuit to flow back into the control module 130, causing damage to the control module 130. Based on this, by setting a second driving unit 142, which is connected to both the control module 130 and the second switching unit 141, on the one hand, the second driving unit 142 can convert the low-voltage weak current signal output by the control module 130 into a high-voltage driving signal, thereby enabling the control module 130 to indirectly and effectively control the second switching unit 141. On the other hand, when the second switching unit 141 experiences a short circuit, overcurrent, or other fault, the second driving unit 142 can act as an isolation unit, preventing the fault current from flowing directly to the control module 130 and reducing the risk of damage to the control module 130.

[0056] For example, controlling the operation of the second driving unit 142 to switch the on / off state of the second switching unit 141 according to the discharge information includes: if the discharge information is detected to meet the preset discharge conditions, a third control signal is output to the second driving unit 142 to control the second driving unit 142 to output a discharge control signal, such as a high-level signal, so that the second switching unit 141 is turned on; if the discharge information is detected to not meet the preset discharge conditions, a fourth control signal is output to the second driving unit 142 to control the second driving unit 142 to output a power-off control signal, such as a low-level signal, so that the second switching unit 141 is turned off.

[0057] In some embodiments, refer to Figure 4 The control circuit 100 further includes: a first temperature detection module 160 and a heating module 170; the first temperature detection module 160 is used to obtain the temperature of the energy storage module 200, the control module 130 is connected to the first temperature detection module 160, the heating module 170 is used to increase the internal temperature of the energy storage module 200, the control module 130 is connected to the heating module 170, and the control module 130 is also used to control the working state of the heating module 170 according to the temperature of the energy storage module 200.

[0058] It should be noted that if the energy storage module 200 and the generator are applied to the automotive field, when the ambient temperature is below 0°C, the viscosity of the electrolyte inside the energy storage module 200 will increase significantly, the ion migration rate will decrease drastically, the battery internal resistance will rise sharply, and the battery output capacity will decrease significantly (e.g., at -20°C, the capacity may drop to less than 50% of that at room temperature), which will not be able to meet the power requirements for vehicle starting and driving, and may even lead to the risk of power interruption.

[0059] Understandably, by setting up the heating module 170, the internal temperature of the energy storage module 200 can be raised to the optimal operating temperature range of the energy storage module 200, so as to restore the fluidity of the electrolyte and the migration ability of lithium ions, and ensure stable charging and discharging performance.

[0060] For example, the optimal operating temperature range for the energy storage module 200 is 10–25°C.

[0061] For example, controlling the operating state of the heating module 170 based on the temperature of the energy storage module 200 includes: if the temperature of the energy storage module 200 is detected to be lower than the minimum value of the optimal operating temperature range of the energy storage module 200, then controlling the heating module 170 to operate until the temperature of the energy storage module 200 reaches a third preset temperature value, wherein the third preset temperature value can be the maximum value of the optimal operating temperature range of the energy storage module 200.

[0062] In some embodiments, refer to Figure 8 The heating module 170 also includes a heating element 171, a first heating switch unit 172, a second heating switch unit 173, a first heating drive unit 174, and a second heating drive unit 175. The first heating switch unit 172 and the second heating switch unit 173 are respectively connected to the heating element 171. The control module 130 is connected to the first heating switch unit 172 through the first heating drive unit 174, and the control module 130 is connected to the second heating switch unit 173 through the second heating drive unit 175.

[0063] For example, the first heating switch unit 172 includes a relay K1, and the second heating unit 173 includes a MOSFET.

[0064] It should be noted that both the first heating switch unit 172 and the second heating switch unit 173 are connected to the energy storage module 200. If both the first heating switch unit 172 and the second heating switch unit 173 are turned on, the energy storage module 200 can supply power to the heating element 171 so that the heating element 171 can work.

[0065] It should be noted that the control module 130 is also used to control the operation of the first heating drive unit 174 and the second heating drive unit 175 according to the temperature of the energy storage module 200 to switch the working state of the first heating switch unit 172 and the second heating switch unit 173.

[0066] It is understandable that by setting the first heating drive unit 174 and the second heating drive unit 175, on the one hand, the first heating drive unit 174 and the second heating drive unit 175 can convert the low-voltage weak electrical signal output by the control module 130 into a strong electrical drive signal, thereby realizing the indirect and effective control of the first heating switch unit 172 and the second heating switch unit 173 by the control module 130.

[0067] In some embodiments, refer to Figure 4 The control circuit 100 further includes: a second temperature detection module 180, which is used to acquire the temperature of the energy storage module 200; a control module 130 is connected to the second temperature detection module 180, which is also used to control the on / off state of the first switch module 120 according to the temperature of the energy storage module 200.

[0068] For example, if the temperature of the energy storage module 200 is detected to be inconsistent with the preset charging conditions, the first switch module 120 is controlled to disconnect so as to disconnect the power supply circuit; if the temperature of the energy storage module 200 is detected to be consistent with the preset charging conditions, the first switch module 120 is controlled to turn on so as to turn on the power supply circuit.

[0069] For example, an experiment can be conducted in a safe environment (e.g., a laboratory) to charge the energy storage module 200 with a generator, detect the coil temperature data of the generator under different continuous working durations, record the temperature rise of the energy storage module 200 when the generator coil temperature reaches the maximum safe temperature, and use the temperature rise of the energy storage module 200 as the preset temperature rise value.

[0070] It should be noted that different types of energy storage modules 200 can also obtain the preset temperature range increase value adapted to the energy storage module 200 through the above-mentioned experiment of charging the energy storage module 200 with the generator.

[0071] For example, the preset charging condition is: the temperature rise of the energy storage module 200 is less than the preset temperature rise, wherein the preset temperature rise is related to the maximum safe temperature of the generator coil.

[0072] Optionally, the preset temperature rise value is 3℃. If the detected temperature rise value of the energy storage module 200 is less than 3℃, it meets the preset charging conditions. The first switch module 120 is then turned on to make the power supply circuit open, ensuring that the coil temperature of the generator will not exceed the maximum safe temperature value during the process of powering the energy storage module 200. If the detected temperature rise value of the energy storage module 200 is greater than or equal to 3℃, it meets the preset charging conditions. The first switch module 120 is then turned off to disconnect the power supply circuit, and the generator stops powering the energy storage module 200, allowing the coil temperature of the generator to drop to a safe temperature range.

[0073] In some embodiments, the control module 130 is further configured to control the on / off state of the first switching module 120 according to the temperature of the energy storage module 200 to execute an intermittent charging strategy, the intermittent charging strategy including: When the temperature of the energy storage module 200 reaches the first preset temperature value, the first switch module 120 is controlled to disconnect, thereby disconnecting the electrical connection between the generator and the energy storage module 200. When the temperature of the energy storage module 200 reaches the second preset temperature value, the first switch module 120 is turned on to reacquire the temperature of the energy storage module 200 and continue to execute the intermittent charging strategy according to the newly acquired temperature of the energy storage module 200, wherein the second preset temperature value is less than the first preset temperature value.

[0074] For example, the first preset temperature value is less than the sum of the initial temperature obtained by the energy storage module 200 before charging and the preset temperature increase value. If the initial temperature of the energy storage module 200 is 28°C and the preset temperature increase value is 3°C, then the first preset temperature value can be set to 30.5°C.

[0075] For example, the second preset temperature value can be the initial temperature of the energy storage module 200, which is 28°C.

[0076] For example, when the temperature of the energy storage module is detected to reach 30.5°C, the first switch module 120 is controlled to disconnect, thus breaking the electrical connection between the generator and the energy storage module 200. This indicates that the temperature increase of the energy storage module 200 is 2.5°C, which is about to reach the preset temperature increase value. At this time, the generator coil temperature is close to the maximum safe temperature. Disconnecting the first switch module 120 ensures that the generator coil temperature remains within the safe temperature range. When the temperature of the energy storage module 200 is detected to drop to 28°C, the first switch module 120 is controlled to turn on again, reconnecting the generator coil temperature. By taking the temperature of the energy storage module 200 and continuing to execute the intermittent charging strategy based on the newly acquired temperature of the energy storage module 200, it can be seen that during the period when the temperature of the energy storage module 200 drops from 30.5℃ to 28℃, the temperature of the generator can be further reduced to a relatively low temperature value within the safe temperature range, for example, reduced to the ambient temperature. The first switch module 120 is then turned on to control the generator to supply power to the energy storage module 200, reacquire charging power, and continue to execute the intermittent charging strategy based on the newly acquired charging power. This cycle continues until the energy storage module 200 is fully charged.

[0077] Understandably, the control module 130 is also used to control the on / off state of the first switch module 120 according to the temperature of the energy storage module 200 to execute an intermittent charging strategy, so as to control the generator to intermittently supply power to the energy storage module 200, so that the maximum operating temperature of the generator does not exceed the maximum safe temperature, thereby ensuring that the generator operates within a safe temperature range each time, effectively avoiding the situation where the coil temperature is too high and the generator burns out due to the generator continuously charging the energy storage module 200 with a large current.

[0078] In some embodiments, the control circuit 100 further includes a communication module and a button module. The communication module is connected to the control module 130 and the host computer respectively, and is used to enable remote communication between the control module 130 and the host computer. The button module is connected to the energy storage module 200 and the control module 130 respectively, and is used to control the on / off of power supply from the energy storage module 200 to the control module 130.

[0079] For example, the communication module can be a Bluetooth module or a WIFI module, and this application does not impose too many limitations on the communication module.

[0080] Secondly, referring to Figure 9 , Figure 10 This application provides a charging control method applied to the control circuit 100 in the first aspect embodiment, the method comprising steps S100-S200: S100: Obtain charging information corresponding to the electrical energy transmitted from the generator to the energy storage module 200; S200: Control the on / off state of the first switch module 120 according to the charging information to execute an intermittent charging strategy.

[0081] The charging information includes the charging capacity, and the intermittent charging strategy includes steps S210-S220: Step S210: When the charging power reaches the first preset power value, control the first switch module 120 to disconnect, so as to disconnect the electrical connection between the generator and the energy storage module 200, and record the disconnection time. Step S220: When the disconnection time reaches the preset time, control the first switch module 120 to turn on, reacquire the charging power, and continue to execute the intermittent charging strategy according to the charging power.

[0082] Optionally, the first preset power is set to 10% of the total energy storage capacity of the energy storage module 200, and the preset duration is 10 minutes. In this application, the specific values ​​of the first preset power and the preset duration are not limited in too much.

[0083] For example, if the detected charging amount is less than 10% of the total energy storage capacity of the energy storage module 200, it indirectly indicates that the coil temperature of the generator is lower than the maximum safe temperature, and the first switch module 120 is kept in a continuously conducting state; if the detected charging amount reaches 10% of the total energy storage capacity of the energy storage module 200, it indirectly indicates that the coil temperature of the generator is close to the maximum safe temperature, and the first switch module 120 is controlled to disconnect, so as to disconnect the electrical connection between the generator and the energy storage module 200, which can effectively prevent the coil temperature of the generator from exceeding the maximum safe temperature.

[0084] For example, during the 10-minute period when the first switch module 120 is disconnected, the temperature of the generator can be further reduced to a relatively low temperature value within the safe temperature range. For instance, when the disconnection time reaches 10 minutes, it can be reduced to the ambient temperature, and the first switch module 120 can be turned on to control the generator to supply power to the energy storage module 200, reacquire charging power, and continue to execute the intermittent charging strategy according to the newly acquired charging power. This cycle continues until the energy storage module 200 is fully charged.

[0085] Understandably, the first switch module 120 is switched on and off according to the charging information to execute an intermittent charging strategy, thereby controlling the generator to intermittently supply power to the energy storage module 200. This reasonably controls the charging amount of the generator during each continuous operation, ensuring that the generator's maximum operating temperature does not exceed the maximum safe temperature. This ensures that the generator operates within a safe temperature range each time, effectively preventing the coil temperature from becoming too high and burning out the generator due to continuous high current charging of the energy storage module 200.

[0086] Thirdly, referring to Figure 11This application provides a start-stop power supply, including: a housing 1000, an energy storage module 200, terminals, and a control circuit 100 as described in the first aspect embodiment. The housing 1000 includes at least a shell; the energy storage module 200 is disposed inside the shell; the terminals are disposed on one side of the housing 1000 and electrically connected to the energy storage module 200; the control circuit 100 is used to control the on / off switching of power supply from the generator to the energy storage module 200.

[0087] For example, the pole includes a first pole 310 and a second pole 320. The first pole 310 is electrically connected to one end of the energy storage module 200, and the second pole 320 is electrically connected to the control circuit 100. The control circuit 100 is connected to the other end of the energy storage module 200.

[0088] According to the control circuit 100, charging control method, and start / stop power supply provided in this application, the control circuit 100 includes: a connection terminal, an energy acquisition module 110, a first switch module 120, and a control module 130. The control module 130 is connected to both the energy acquisition module 110 and the first switch module 120, and is used to control the on / off state of the first switch module 120 based on charging information. First, the circuit segment formed by the connection between the first switch module 120 and the energy acquisition module 110 constitutes part of the power supply circuit. The power supply circuit is used to realize the energy transfer between the generator and the energy storage module 200. By controlling the on / off state of the first switch module 120, the on / off state of the generator supplying power to the energy storage module 200 can be indirectly realized. Second, the control module in the control circuit 100... Block 130 can be used to control the on / off state of the first switch module 120 according to the charging information, thereby ensuring that the coil temperature of the generator is always controlled within a safe temperature range. In summary, the control circuit 100 provided by this application enables commercially available generators to be adapted to charge different types of energy storage modules 200. Furthermore, during generator operation, it can prevent the coil temperature of the generator from exceeding the safe range, thereby ensuring that the generator can stably charge the energy storage module 200. In addition, compared with the related technologies that redesign the internal structure of the generator to accommodate the installation of a temperature detection module in order to prevent the generator coil from burning out, the solution of this application does not require redesigning the internal structure of the generator, which is more reliable and greatly reduces costs.

[0089] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0090] It should also be understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, herein, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system 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 system. 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 system that includes that element.

[0091] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A control circuit, characterized in that, The control circuit includes: The connection terminal includes a first connection terminal and a second connection terminal, wherein the first connection terminal is connected to a generator and the second connection terminal is connected to an energy storage module; An energy acquisition module is connected between the first connection terminal and the second connection terminal, and is used to acquire charging information corresponding to the energy transmitted from the generator to the energy storage module; A first switch module is connected between the first connection terminal and the second connection terminal. The first switch module is used to control the on / off switching of the generator supplying power to the energy storage module. A control module is connected to the power acquisition module and the first switch module respectively, and is used to control the on / off state of the first switch module according to the charging information.

2. The control circuit according to claim 1, characterized in that, The power acquisition module includes: A current sampling unit is connected between the first connection terminal and the second connection terminal, and is used to collect current data corresponding to the electrical energy transmitted from the generator to the energy storage module; A battery management unit is connected to both the current sampling unit and the control module. The battery management unit is used to acquire the current data, generate the charging information based on the current data, and send it to the control module.

3. The control circuit according to claim 1, characterized in that, The control module is used to control the on / off state of the first switch module according to the charging information to execute an intermittent charging strategy. The charging information includes the charging amount, and the intermittent charging strategy includes: When the charging power reaches a first preset power value, the first switch module is controlled to disconnect, thereby disconnecting the electrical connection between the generator and the energy storage module, and the disconnection duration is recorded. When the disconnection time reaches the preset time, the first switch module is turned on to reacquire the charging power and continue to execute the intermittent charging strategy based on the newly acquired charging power.

4. The control circuit according to claim 1, characterized in that, The first switch module includes: A first switching unit is connected between the first connection terminal and the second connection terminal; A first driving unit is connected to both the control module and the first switching unit. The control module controls the first driving unit to operate according to the charging information to switch the on / off state of the first switching unit.

5. The control circuit according to claim 1, characterized in that, The power acquisition module is also used to acquire discharge information corresponding to the power transmitted from the energy storage module to the generator; The control circuit also includes: The second switch module is connected between the first connection terminal and the second connection terminal. The second switch module is used to control the on / off switching of the energy storage module to supply power to the generator. Furthermore, the second switch module is connected to the control module, and the control module is also used to control the on / off switching of the second switch module according to the discharge information.

6. The control circuit according to claim 5, characterized in that, The control circuit also includes: A transient voltage suppression module is provided, which is connected to the second switching module.

7. The control circuit according to claim 5, characterized in that, The second switch module includes: A second switching unit is connected between the first connection terminal and the second connection terminal; The second driving unit is connected to the control module and the second switching unit respectively. The control module is used to control the second driving unit to work according to the discharge information to switch the on / off state of the second switching unit.

8. The control circuit according to claim 1, characterized in that, The control circuit also includes: A first temperature detection module is used to acquire the temperature of the energy storage module, and the control module is connected to the first temperature detection module. A heating module is provided to increase the internal temperature of the energy storage module. A control module is connected to the heating module and is also used to control the working state of the heating module according to the temperature of the energy storage module.

9. The control circuit according to claim 1, characterized in that, The control circuit also includes: The second temperature detection module is used to acquire the temperature of the energy storage module. The control module is connected to the second temperature detection module and is also used to control the on / off state of the first switch module according to the temperature of the energy storage module.

10. The control circuit according to claim 9, characterized in that, The control module is further configured to control the on / off state of the first switching module according to the temperature of the energy storage module to execute an intermittent charging strategy, the intermittent charging strategy including: When the temperature of the energy storage module reaches a first preset temperature value, the first switch module is controlled to disconnect, thereby disconnecting the electrical connection between the generator and the energy storage module. When the temperature of the energy storage module reaches the second preset temperature value, the first switch module is controlled to turn on, the temperature of the energy storage module is reacquired, and the intermittent charging strategy is continued to be executed according to the newly acquired temperature of the energy storage module, wherein the second preset temperature value is less than the first preset temperature value.

11. A charging control method, applied to the control circuit as described in any one of claims 1-8, characterized in that, The method includes: Obtain charging information corresponding to the electrical energy transmitted from the generator to the energy storage module; The first switch module is controlled to switch on and off according to the charging information to execute an intermittent charging strategy; The charging information includes the charging capacity, and the intermittent charging strategy includes: When the charging power reaches a first preset power value, the first switch module is controlled to disconnect, thereby disconnecting the electrical connection between the generator and the energy storage module, and the disconnection duration is recorded. When the disconnection time reaches the preset time, the first switch module is controlled to turn on, the charging power is reacquired, and the intermittent charging strategy is continued to be executed according to the charging power.

12. A start-stop power supply, characterized in that, include: The housing, which includes at least a shell; An energy storage module is disposed within the housing; The electrode post is located on one side of the outer casing and is electrically connected to the energy storage module; And a control circuit as described in any one of claims 1-10, for controlling the on / off switching of the generator supplying power to the energy storage module.

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