Energy storage device control circuit and energy storage device

Abstract

The present invention provides a control circuit for an energy storage device and an energy storage device. The control circuit includes: a first DC converter, wherein the input end of the first DC converter is connected to an energy storage component; a circuit board, wherein the circuit board is connected to the output end of the first DC converter; a first wake-up circuit and / or a second wake-up circuit, wherein the first wake-up circuit is connected to the first DC converter, and the second wake-up circuit is connected to the circuit board, the first wake-up circuit is used to receive user input, and the second wake-up circuit is used to connect to a wake-up power supply; wherein, when the first wake-up circuit receives user input, the first DC converter supplies power to the circuit board; or when the second wake-up circuit is connected to the wake-up power supply, the second wake-up circuit supplies power to the circuit board to power on the circuit board.

Description

Technical Field

[0001] The present invention relates to the field of circuit technology, and in particular to a control circuit of an energy storage device and an energy storage device. Background Art

[0002] In energy storage devices, a DC converter is usually used for voltage conversion to power the circuit board.

[0003] With the above technical solution, if the energy storage device does not work, the components on the circuit board will not work, and the DC converter will still have a small current loss.

[0004] The occurrence of the above situation will cause the stored electrical energy of the energy storage device to be completely exhausted, causing irreversible damage to the energy storage device. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, a first aspect of the present invention is to provide a control circuit for an energy storage device.

[0007] A second aspect of the present invention is to provide an energy storage device.

[0008] In view of this, according to a first aspect of the present invention, the present invention provides a control circuit for an energy storage device, the energy storage device including an energy storage element, and the control circuit including: a first DC converter, the input end of the first DC converter being connected to the energy storage element; a circuit board, the circuit board being connected to the output end of the first DC converter; a first wake-up circuit and / or a second wake-up circuit, the first wake-up circuit being connected to the first DC converter, the second wake-up circuit being connected to the circuit board, the first wake-up circuit being used to receive user input, and the second wake-up circuit being used to connect to a wake-up power supply; wherein, when the first wake-up circuit receives user input, the first DC converter supplies power to the circuit board; or when the second wake-up circuit is connected to the wake-up power supply, the second wake-up circuit supplies power to the circuit board to power on the circuit board.

[0009] The technical solution of the present invention provides a control circuit for an energy storage device. The control circuit includes a first DC converter, a circuit board, a first wake-up circuit and / or a second wake-up circuit.

[0010] Specifically, in one of the technical solutions, the control circuit includes a first DC converter, a circuit board, and a first wake-up circuit.

[0011] Specifically, in one of the technical solutions, the control circuit includes a first DC converter, a circuit board, and a second wake-up circuit.

[0012] Specifically, in one of the technical solutions, the control circuit includes a first DC converter, a circuit board, a first wake-up circuit and a second wake-up circuit.

[0013] In this technical solution, when the energy storage device is not operating, the first DC converter stops supplying power to the circuit board, thereby powering down the circuit board. Since the circuit board is powered down, it no longer generates power loss, thereby reducing energy consumption in the energy storage device and the chance of damage due to over-discharge, thereby protecting the energy storage device.

[0014] In addition, the energy storage device using the technical solution of the present invention has the characteristic of low self-power consumption. When the electric energy stored in the energy storage device is the same, the energy storage device has a longer storage time and a longer time remaining in the transport mode, thereby extending the service life of the energy storage device.

[0015] In the above technical solution, the energy storage component can be understood as a device for storing electrical energy, which can output DC power so that the first DC converter can convert the output DC power into a voltage to obtain DC power that meets the power supply requirements of the circuit board.

[0016] The first DC converter, also known as a DC-DC converter, is a device that converts high-voltage and low-voltage DC power. It converts a DC power supply of a certain voltage level into a DC power supply of another voltage level. DC stands for Direct Current.

[0017] Upon receiving user input, based on the connection between the first wake-up circuit and the first DC converter, the first wake-up circuit can trigger the first DC converter to operate, thereby supplying power to the circuit board, causing it to exit the power-off state and power on. During this process, the user can actively input according to actual needs to trigger the first wake-up circuit, activate the circuit board, and enable the energy storage device to operate.

[0018] By setting up a second wake-up circuit and utilizing the connection relationship between the second wake-up circuit and the circuit board, the user can connect the second wake-up circuit through an external wake-up power supply to directly power the circuit board to activate the circuit board and enable the energy storage device to operate.

[0019] During this process, two circuit board wake-up methods are provided so that the energy storage device can adapt to the usage requirements of different scenarios.

[0020] In the above technical solution, the wake-up power source can be understood as the power source used to power the circuit board, which can be understood as a non-sustainable power source, such as a battery or power converter. It can be selected based on the actual scenario and actual use needs, and will not be detailed here.

[0021] In addition, the control circuit of the energy storage device proposed in the present invention also has the following additional technical features.

[0022] In the above technical solution, the first DC converter includes a first enable terminal, the circuit board has a first interface, and the first interface is connected to the first enable terminal; wherein, after the circuit board is powered on, the circuit board controls the operation of the first DC converter through the first interface.

[0023] In this technical solution, by setting the first enabling terminal and the first interface, the circuit board can control the working state of the first DC converter, so that the first DC converter can provide stable power supply to the circuit board to drive the stable operation of the circuit board.

[0024] In the above technical solution, the first interface is an input and output interface of the circuit board.

[0025] In any of the above technical solutions, the first DC converter also includes a second enable terminal, the circuit board also has a second interface, and the first wake-up circuit is connected to the second enable terminal and the second interface; wherein, when the first wake-up circuit receives user input, the circuit board determines that the wake-up mode is the first mode through the second interface, and controls the operation of the first DC converter through the first interface.

[0026] In this technical solution, a second enable terminal is set so that the first wake-up circuit can control the working state of the first DC converter through the second enable terminal. For example, when the first wake-up circuit receives user input, the first wake-up circuit can reflect the user input to the first DC converter based on the above connection relationship, so that the first DC converter can output voltage to power the circuit board.

[0027] By setting up a second interface, when the first wake-up circuit receives user input, the circuit board can sense its power supply mode through the second interface, that is, trigger the first DC converter to power it through the first wake-up circuit, and then control the first DC converter through the first interface, so that the first DC converter can stably supply power to it.

[0028] In any of the above technical solutions, the circuit board has a first power supply end, a second power supply end and a third interface; the second wake-up circuit includes a second DC converter, the second DC converter includes a first output end, a second output end and a third enable end, the first output end is connected to the first power supply end, the second output end is connected to the second power supply end, and the third interface is connected to the third enable end, wherein, when the second wake-up circuit is connected to the wake-up power supply, the circuit board determines that the wake-up mode is the second mode through the third interface, and controls the operation of the first DC converter through the first interface, and controls the second DC converter to stop operating through the third interface.

[0029] In this technical solution, the second wake-up circuit includes a second DC converter, so that the second DC converter is used to convert the DC power output by the wake-up power supply into a voltage that can be used to power the circuit board, thereby powering the circuit board.

[0030] The third enable terminal and the third interface are provided so that after the second DC converter is connected to the wake-up power supply and supplies power to the circuit board, the second DC converter can transmit a signal to the circuit board based on the connection between the third enable terminal and the third interface, so that the circuit board knows its power supply mode, i.e., the second mode. The operation of the first DC converter and the second DC converter can then be controlled based on the power supply mode.

[0031] Specifically, the first DC converter is controlled to operate so that it outputs a voltage suitable for the operation of the circuit board to provide stable power supply thereto, and the second DC converter is controlled to stop operating so as to cut off the power supply of the wake-up power supply.

[0032] During this process, the circuit board can choose to run or stop the DC converter according to the wake-up mode, thereby achieving stable power supply for the circuit board and ensuring the stability of the control circuit during operation.

[0033] In any of the above technical solutions, the control circuit further includes: a first output circuit connected to the first end of the energy storage component; a second output circuit connected to the second end of the energy storage component; and a control switch located on the first output circuit or the second output circuit and connected to the circuit board; wherein, after the circuit board is powered on, the circuit board is also used to control the control switch to be turned on and off.

[0034] In this technical solution, the first output line and the second output line can be understood as busbars for the energy storage component to supply power to the outside and / or to draw power from the outside to charge the energy storage component.

[0035] By setting a control switch, after the circuit board is powered on, the first output line or the second output line is turned on and off by switching the control switch on and off, thereby controlling whether the energy storage component supplies power to the outside or draws power from the outside.

[0036] In the above technical solution, the control switch may be a relay, such as a normally open relay.

[0037] In this technical solution, the control switch is driven to close only after the circuit board is powered on, so as to control whether the energy storage component supplies power to the outside. In this process, the probability of damage to the energy storage component due to over-discharge is reduced.

[0038] Similarly, the control switch is driven to close only after the circuit board is powered on to control whether the energy storage component draws power from the outside, thereby avoiding the situation where the energy storage component is directly charged when the circuit board is not powered on, causing overcharging and damage to the energy storage component, thereby improving the reliability of the control circuit.

[0039] In any of the above technical solutions, the control circuit also includes: a third DC converter, the third DC converter includes a first input terminal and a second input terminal, the first input terminal is connected to the first output line, and the second input terminal is connected to the second output line; a thermal management circuit is connected to the output terminal of the third DC converter.

[0040] In this technical solution, the thermal management circuit can be understood as a thermal management module, which can perform temperature protection on the energy storage device and / or components in the control circuit, thereby ensuring the reliability of the control circuit and the energy storage device in which the control circuit is set.

[0041] Specifically, the thermal management circuit can detect the temperature of the components in the energy storage device and / or the control circuit, and output an abnormal reminder when the detected temperature value exceeds the temperature threshold to remind the user, thereby reducing the probability of failure of the control circuit or the energy storage device where the control circuit is located due to excessive temperature, thereby protecting the control circuit or the energy storage device where the control circuit is located.

[0042] In any of the above technical solutions, the circuit board also has a fourth interface, and the third DC converter also has a fourth enable terminal, which is used to connect to the fourth interface; wherein the circuit board is also used to adjust the operating parameters of the third DC converter through the fourth interface to adjust the output voltage of the third DC converter.

[0043] In this technical solution, a fourth interface and a fourth enable terminal are set so that the circuit board can adjust whether the third DC converter outputs power and the output voltage, so as to obtain power supply that meets the operation of the thermal management circuit, thereby ensuring the stable operation of the thermal management circuit.

[0044] In any of the above technical solutions, the circuit board is a circuit board provided with a battery management system.

[0045] In this technical solution, the battery management system, Battery Management System, BMS, also known as the battery nanny or battery steward, is mainly used to intelligently manage and maintain each battery unit (i.e., energy storage component), prevent the battery from overcharging and over-discharging, extend the battery life, and monitor the battery status. The BMS battery management system unit includes a BMS battery management system, a control module, a display module, a wireless communication module, electrical equipment, a battery pack for powering the electrical equipment, and an acquisition module for collecting battery information of the battery pack. The BMS battery management system is connected to the wireless communication module and the display module through communication interfaces respectively. The output end of the acquisition module is connected to the input end of the BMS battery management system. The output end of the BMS battery management system is connected to the input end of the control module. The control module is connected to the battery pack and the electrical equipment respectively.

[0046] According to a second aspect of the present invention, the present invention provides an energy storage device, comprising: an energy storage component; and a control circuit of any of the above energy storage devices, wherein the control circuit of the energy storage device is connected to the energy storage component.

[0047] In the above technical solution, the energy storage device further includes: a fuse located between the energy storage component and the control circuit of the energy storage device.

[0048] In this technical solution, a fuse is provided so that when the discharge current or charging current of the energy storage component is too large, the connection between the control circuit of the energy storage device and the energy storage component can be cut off, thereby protecting the energy storage component and improving the safety of the energy storage device.

[0049] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0051] Figure 1 One of the topological schematic diagrams of an energy storage device according to an embodiment of the present invention is shown;

[0052] Figure 2 FIG2 shows a second topological diagram of an energy storage device according to an embodiment of the present invention;

[0053] Figure 3 FIG3 shows a topological diagram of an energy storage device according to an embodiment of the present invention;

[0054] Figure 4 FIG4 shows a fourth topological diagram of an energy storage device according to an embodiment of the present invention.

[0055] in, Figures 1 to 4 The corresponding relationship between the reference numerals and component names is as follows:

[0056] 100 energy storage device, 102 energy storage component, 200 control circuit of energy storage device, 202 first DC converter, 204 circuit board, 206 first wake-up circuit, 208 second wake-up circuit, 210 second DC converter, 2102 first output end, 2104 second output end, 212 third DC converter, 2122 first input end, 2124 second input end, 214 thermal management circuit, 300 wake-up power supply, A first enable end, IO1 first interface, B second enable end, IO2 second interface, 2042 first power supply end, 2044 second power supply end, IO3 third interface, C third enable end, P+ first output line, P- second output line, K control switch, IO4 fourth interface, D fourth enable end, F fuse DETAILED DESCRIPTION

[0057] In order to more clearly understand the above aspects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0058] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0059] In one embodiment of the present invention, Figure 1 As shown, a control circuit 200 of an energy storage device is provided. The energy storage device 100 includes an energy storage element 102, and the control circuit includes: a first DC converter 202, wherein the input end of the first DC converter 202 is connected to the energy storage element 102; a circuit board 204, wherein the circuit board 204 is connected to the output end of the first DC converter 202; a first wake-up circuit 206 and / or a second wake-up circuit 208, wherein the first wake-up circuit 206 is connected to the first DC converter 202, and the second wake-up circuit 208 is connected to the circuit board 204, the first wake-up circuit 206 is used to receive user input, and the second wake-up circuit 208 is used to connect to a wake-up power supply 300; wherein, when the first wake-up circuit 206 receives user input, the first DC converter 202 supplies power to the circuit board 204; or when the second wake-up circuit 208 is connected to the wake-up power supply 300, the second wake-up circuit 208 supplies power to the circuit board 204 to power on the circuit board 204.

[0060] An embodiment of the present invention provides a control circuit 200 for an energy storage device. The control circuit includes a first DC converter 202 , a circuit board 204 , a first wake-up circuit 206 and / or a second wake-up circuit 208 .

[0061] Specifically, in one embodiment, the control circuit includes a first DC converter 202 , a circuit board 204 , and a first wake-up circuit 206 .

[0062] Specifically, in one embodiment, the control circuit includes a first DC converter 202 , a circuit board 204 , and a second wake-up circuit 208 .

[0063] Specifically, in one embodiment, the control circuit includes a first DC converter 202 , a circuit board 204 , a first wake-up circuit 206 , and a second wake-up circuit 208 .

[0064] In this embodiment, when the energy storage device 100 is not operating, the first DC converter 202 stops supplying power to the circuit board 204, thereby powering off the circuit board 204. Since the circuit board 204 is powered off, it no longer generates power loss, thereby reducing the power consumption of the energy storage element 102 in the energy storage device 100 and lowering the probability of damage to the energy storage element 102 due to over-discharge, thereby protecting the energy storage element 102.

[0065] In addition, the energy storage device 100 using the embodiment of the present invention has the characteristic of low self-power consumption. When the electrical energy stored in the energy storage element 102 is the same, the energy storage device 100 has a longer storage time and a longer time remaining in the transport mode, thereby extending the service life of the energy storage device 100.

[0066] In the above embodiment, the energy storage component 102 can be understood as a device for storing electrical energy, which can output DC power so that the first DC converter 202 can convert the output DC power into a DC power that meets the power supply requirements of the circuit board 204.

[0067] The first DC converter 202, also known as a DC converter or DCDC converter, is a device for converting high-voltage and low-voltage DC power. It converts a DC power supply of a certain voltage level into a DC power supply of another voltage level. DC stands for Direct Current.

[0068] Upon receiving user input, based on the connection between the first wake-up circuit 206 and the first DC converter 202, the first wake-up circuit 206 can trigger the first DC converter 202 to operate, thereby supplying power to the circuit board 204, thereby activating the circuit board 204 from the power-off state and powering it back on. During this process, the user can actively input according to actual needs to trigger the first wake-up circuit 206, activate the circuit board 204, and enable the energy storage device 100 to operate.

[0069] In one embodiment, the first wake-up circuit 206 is a button, and the user input is pressing the button. When the button is pressed, the first DC converter 202 outputs a 12V voltage to the circuit board 204 .

[0070] By setting up the second wake-up circuit 208 and utilizing the connection relationship between the second wake-up circuit 208 and the circuit board 204, the user can connect the second wake-up circuit 208 through an external wake-up power supply 300 to directly supply power to the circuit board 204 to activate the circuit board 204 and enable the energy storage device 100 to operate.

[0071] In this process, two wake-up methods of the circuit board 204 are provided so that the energy storage device 100 can be adapted to the usage requirements of different scenarios.

[0072] In the above embodiment, the wake-up power supply 300 can be understood as a power source for powering the circuit board 204, and can be understood as a non-sustainable power source, such as a battery or a power converter. It can be selected based on the actual scenario and actual use needs, and will not be described in detail here.

[0073] In the above embodiment, if Figure 2 As shown, the first DC converter 202 includes a first enable terminal A, and the circuit board 204 has a first interface IO1, which is connected to the first enable terminal A; wherein, after the circuit board 204 is powered on, the circuit board 204 controls the operation of the first DC converter 202 through the first interface IO1.

[0074] In this embodiment, the first enable terminal A and the first interface IO1 are set so that the circuit board 204 can control the working state of the first DC converter 202, so that the first DC converter 202 can provide stable power supply to the circuit board 204 to drive the stable operation of the circuit board 204.

[0075] In the above embodiment, the first interface IO1 is an input / output interface of the circuit board 204 .

[0076] In one embodiment, the circuit board 204 locks the first DC converter 202 via the first interface IO1 to stabilize the output power supply.

[0077] In any of the above embodiments, if Figure 2 As shown, the first DC converter 202 also includes a second enable terminal B, the circuit board 204 also has a second interface IO2, and the first wake-up circuit 206 is connected to the second enable terminal B and the second interface IO2; wherein, when the first wake-up circuit 206 receives user input, the circuit board 204 determines that the wake-up mode is the first mode through the second interface IO2, and controls the operation of the first DC converter 202 through the first interface IO1.

[0078] In this embodiment, the second enable terminal B is provided so that the first wake-up circuit 206 can control the working state of the first DC converter 202 through the second enable terminal B. For example, when the first wake-up circuit 206 receives user input, the first wake-up circuit 206 can reflect the user input to the first DC converter 202 based on the above connection relationship, so that the first DC converter 202 can output voltage to power the circuit board 204.

[0079] By setting the second interface IO2, when the first wake-up circuit 206 receives user input, the circuit board 204 can sense its power supply mode through the second interface IO2, that is, trigger the first DC converter 202 to power it through the first wake-up circuit 206, and then control the first DC converter 202 through the first interface IO1, so that the first DC converter 202 can stably supply power to it.

[0080] In the above embodiment, the first DC converter 202 includes an isolated step-down circuit.

[0081] In any of the above embodiments, if Figure 3 As shown, the circuit board 204 has a first power supply terminal 2042, a second power supply terminal 2044 and a third interface IO3; the second wake-up circuit 208 includes a second DC converter 210, and the second DC converter 210 includes a first output terminal 2102, a second output terminal 2104 and a third enable terminal C. The first output terminal 2102 is connected to the first power supply terminal 2042, the second output terminal 2104 is connected to the second power supply terminal 2044, and the third interface IO3 is connected to the third enable terminal C. When the second wake-up circuit 208 is connected to the wake-up power supply 300, the circuit board 204 determines that the wake-up mode is the second mode through the third interface IO3, and controls the first DC converter 202 to operate through the first interface IO1, and controls the second DC converter 210 to stop operating through the third interface IO3.

[0082] In this embodiment, the second wake-up circuit 208 includes a second DC converter 210 , so as to use the second DC converter 210 to convert the DC power output by the wake-up power supply 300 into a voltage that can be used to power the circuit board 204 .

[0083] For example, after the wake-up power supply 300 is connected to the second wake-up circuit 208 , the second DC converter 210 outputs a voltage of 12 volts to the circuit board 204 for the circuit board 204 to operate.

[0084] The third enable terminal C and the third interface IO3 are provided so that after the second DC converter 210 is connected to the wake-up power supply 300 and supplies power to the circuit board 204, a signal can be transmitted to the circuit board 204 based on the connection between the third enable terminal C and the third interface IO3, so that the circuit board 204 is informed of its power supply mode, i.e., the second mode. The operation of the first DC converter 202 and the second DC converter 210 is then controlled based on the power supply mode.

[0085] Specifically, the first DC converter 202 is controlled to operate so that the first DC converter 202 outputs a voltage suitable for the operation of the circuit board 204 to provide it with stable power supply, and the second DC converter 210 is controlled to stop operating to cut off the power supply of the wake-up power supply 300.

[0086] During this process, the circuit board 204 can select the operation and stop operation of the DC converter according to the wake-up mode, thereby achieving stable power supply for the circuit board 204 and ensuring the stability of the control circuit during operation.

[0087] In one embodiment, the second DC converter 210 includes an isolated buck circuit.

[0088] In this embodiment, by using an isolated step-down circuit, the impact of the wake-up power supply 300 on the control circuit can be reduced, thereby protecting the control circuit and improving the reliability of the control circuit.

[0089] In any of the above embodiments, the control circuit further includes: a first output line P+ connected to the first end B+ of the energy storage element 102; a second output line P- connected to the second end B- of the energy storage element 102; and a control switch K located on the first output line P+ or the second output line P- and connected to the circuit board 204; wherein, after the circuit board 204 is powered on, the circuit board 204 is further configured to control the control switch K to be turned on and off.

[0090] In this embodiment, the first output line P+ and the second output line P− can be understood as busbars for the energy storage element 102 to supply power to the outside and / or to draw power from the outside to charge the energy storage element 102 .

[0091] By setting the control switch K, after the circuit board 204 is powered on, the first output line P+ or the second output line P- is turned on and off by switching the control switch K on and off, thereby controlling whether the energy storage component 102 supplies power to the outside or draws power from the outside.

[0092] In the above embodiment, the control switch K may be a relay, such as a normally open relay.

[0093] In this embodiment, the control switch K is driven to close after the circuit board 204 is powered on, so as to control whether the energy storage component 102 supplies power to the outside. In this process, the probability of the energy storage component 102 being damaged by over-discharge is reduced.

[0094] Similarly, the control switch K is driven to close only after the circuit board 204 is powered on, so as to control whether the energy storage component 102 draws power from the outside. This avoids the situation where the energy storage component 102 is directly charged when the circuit board 204 is not powered on, causing overcharging and damage to the energy storage component 102, thereby improving the reliability of the control circuit.

[0095] In any of the above embodiments, if Figure 4 As shown, the control circuit also includes: a third DC converter 212, the third DC converter 212 includes a first input terminal 2122 and a second input terminal 2124, the first input terminal 2122 is connected to the first output line P+, ​​and the second input terminal 2124 is connected to the second output line P-; a thermal management circuit 214, connected to the output terminal of the third DC converter 212.

[0096] In this embodiment, the thermal management circuit 214 can be understood as a thermal management module, which can perform temperature protection on the energy storage device 102 and / or components in the control circuit, thereby ensuring the reliability of the control circuit and the energy storage device 100 provided with the control circuit.

[0097] Specifically, the thermal management circuit 214 can detect the temperature of the energy storage device 102 and / or the components in the control circuit, and output an abnormal reminder when the detected temperature value exceeds the temperature threshold to remind the user, thereby reducing the probability of failure of the control circuit or the energy storage device 100 where the control circuit is located due to excessive temperature, thereby protecting the control circuit or the energy storage device 100 where the control circuit is located.

[0098] In the above embodiment, the third DC converter 212 includes an isolated step-down circuit.

[0099] In any of the above embodiments, the circuit board 204 also has a fourth interface IO4, and the third DC converter 212 also has a fourth enable terminal D, which is used to connect to the fourth interface IO4; wherein, the circuit board 204 is also used to adjust the operating parameters of the third DC converter 212 through the fourth interface IO4 to adjust the output voltage of the third DC converter 212.

[0100] In this embodiment, the fourth interface IO4 and the fourth enable terminal D are set so that the circuit board 204 can adjust whether the third DC converter 212 outputs power and the output voltage, so as to obtain power supply that meets the operation of the thermal management circuit 214, thereby ensuring the stable operation of the thermal management circuit 214.

[0101] For example, the third DC converter 212 outputs a voltage of 24V to the thermal management circuit 214 for the thermal management circuit 214 to operate.

[0102] In any of the above embodiments, the circuit board 204 is a circuit board provided with a battery management system.

[0103] In this embodiment, the battery management system (BMS), also known as a battery nanny or battery steward, is primarily designed to intelligently manage and maintain each battery unit (i.e., energy storage device 102), prevent overcharging and over-discharging of the battery, extend the battery life, and monitor the battery status. The BMS battery management system unit includes a BMS battery management system, a control module, a display module, a wireless communication module, electrical equipment, a battery pack for powering the electrical equipment, and a collection module for collecting battery information from the battery pack. The BMS battery management system is connected to the wireless communication module and the display module via communication interfaces, respectively. The output of the collection module is connected to the input of the BMS battery management system, which is connected to the input of the control module. The control module is connected to the battery pack and the electrical equipment, respectively.

[0104] In this embodiment, the battery management system detects abnormalities in charging and discharging. When an abnormality is detected, the battery management system controls the first DC converter 202 to stop outputting power. When no abnormality is detected, the battery management system keeps outputting power.

[0105] In one embodiment, the present invention provides an energy storage device 100 including: an energy storage component 102 ; and a control circuit 200 of the energy storage device as described above, wherein the control circuit 200 of the energy storage device is connected to the energy storage component 102 .

[0106] In the above embodiment, the energy storage device 100 further includes a fuse F located between the energy storage element 102 and the control circuit 200 of the energy storage device.

[0107] In this embodiment, a fuse F is provided so that when the discharge current or charging current of the energy storage element 102 is too large, the connection between the control circuit 200 of the energy storage device and the energy storage element 102 can be cut off, thereby protecting the energy storage element 102 and improving the safety of the energy storage device 100.

[0108] In one embodiment, the energy storage device 102 includes N battery cells, wherein the N battery cells are connected in series, and N is a positive integer greater than or equal to 1.

[0109] Specifically, the energy storage element 102 is composed of a battery cell C1, a battery cell C2, a battery cell C3, a battery cell C4, a battery cell C5 ... and a battery cell Cn connected in series.

[0110] The terms "first" and "second" in the specification and claims of the present invention may explicitly or implicitly refer to one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected items, and the character " / " generally indicates an "or" relationship between the connected items.

[0111] In the textual description of the present invention, it can 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", "axial", "radial", "circumferential" and the like to 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 embodiments of the present invention and simplifying the description of the embodiments of the present invention, rather than indicating or implying that the structures, devices, and elements referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, these descriptions cannot be understood as limiting the present invention.

[0112] In the description of the present invention, it is understood that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection between two components or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0113] In the claims, specification, and drawings of the present invention, the terms "one embodiment," "some embodiments," "a specific embodiment," and the like mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification, and drawings of the present invention, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0114] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A control circuit for an energy storage device, characterized in that: The energy storage device includes an energy storage component, and the control circuit includes: a first DC converter, wherein an input terminal of the first DC converter is connected to the energy storage component; a circuit board connected to an output end of the first DC converter; a first wake-up circuit and a second wake-up circuit, wherein the first wake-up circuit is connected to the first DC converter, and the second wake-up circuit is connected to the circuit board, the first wake-up circuit is used to receive user input, and the second wake-up circuit is used to connect to a wake-up power supply; Wherein, when the first wake-up circuit receives the user input, the first DC converter supplies power to the circuit board; or when the second wake-up circuit is connected to the wake-up power supply, the second wake-up circuit supplies power to the circuit board so as to power on the circuit board; The first DC converter includes a first enabling terminal, the circuit board has a first interface, and the first interface is connected to the first enabling terminal; Wherein, after the circuit board is powered on, the circuit board controls the operation of the first DC converter through the first interface; The first DC converter further includes a second enable terminal, the circuit board further includes a second interface, and the first wake-up circuit is connected to the second enable terminal and the second interface; When the first wake-up circuit receives the user input, the circuit board determines that the wake-up mode is the first mode through the second interface, and controls the operation of the first DC converter through the first interface; The circuit board has a first power supply end, a second power supply end and a third interface; The second wake-up circuit includes a second DC converter, the second DC converter includes a first output terminal, a second output terminal and a third enable terminal, the first output terminal is connected to the first power supply terminal, the second output terminal is connected to the second power supply terminal, and the third interface is connected to the third enable terminal. In which, when the second wake-up circuit is connected to the wake-up power supply, the circuit board determines that the wake-up mode is the second mode through the third interface, and controls the operation of the first DC converter through the first interface, and controls the second DC converter to stop operating through the third interface.

2. The control circuit of the energy storage device according to claim 1, characterized in that: The control circuit further includes: a first output circuit connected to the first end of the energy storage component; a second output circuit connected to the second end of the energy storage component; a control switch, located on the first output line or the second output line, and connected to the circuit board; Wherein, after the circuit board is powered on, the circuit board is also used to control the control switch to be turned on and off.

3. The control circuit of the energy storage device according to claim 2, characterized in that: The control circuit further includes: a third DC converter, the third DC converter comprising a first input terminal and a second input terminal, the first input terminal being connected to the first output line, and the second input terminal being connected to the second output line; The thermal management circuit is connected to the output end of the third DC converter.

4. The control circuit of the energy storage device according to claim 3, characterized in that: The circuit board further has a fourth interface, and the third DC converter further has a fourth enabling terminal, and the fourth enabling terminal is used to connect to the fourth interface; The circuit board is further configured to adjust operating parameters of the third DC converter via the fourth interface to adjust the output voltage of the third DC converter.

5. The control circuit of the energy storage device according to claim 1, characterized in that: The circuit board is a circuit board provided with a battery management system.

6. An energy storage device, characterized in that: include: Energy storage components; The control circuit of the energy storage device according to any one of claims 1 to 5, wherein the control circuit of the energy storage device is connected to the energy storage element.

7. The energy storage device according to claim 6, characterized in that The energy storage device further includes: A fuse is located between the energy storage component and the control circuit of the energy storage device.

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