Portable energy storage system

Abstract

The embodiment of the utility model provides a portable energy storage system. A battery management module in the portable energy storage system comprises a first communication control interface arranged on a first control unit. The main control module comprises a second communication control interface arranged on the second control unit. The first communication control interface is electrically connected with the second communication control interface through at least one first signal line. And at least one first current protection unit is arranged on the discharge path of at least one first signal line in series. Therefore, the instantaneous loop current generated on the discharge path of the first signal line due to non-standard operation is reduced through the at least one first current protection unit, so that the first electrostatic protection unit and the second electrostatic protection unit are prevented from being damaged due to overcurrent.

Description

Technical Field

[0001] This utility model relates to the field of new energy storage system technology, and in particular to a portable energy storage system. Background Technology

[0002] Portable energy storage systems are typically composed of different modules connected via communication and power lines to form the complete system. Electrostatic discharge (ESD) protection devices are usually added to the communication signal lines and their interfaces to prevent damage to internal components due to static electricity. During normal assembly, it is generally required that the power supply harnesses between modules be connected first, followed by the communication signal lines, and finally the battery management module be powered on to power on the entire system, with the battery management module powered off. However, in certain special conditions, such as system debugging, testing, or production line malfunctions, the battery management module may be powered on prematurely. If the communication signal lines between modules are already connected, connecting the power supply lines in this situation may cause the ESD protection devices to be damaged due to overcurrent. Utility Model Content

[0003] This invention provides a portable energy storage system that uses at least one first current protection unit to reduce the instantaneous loop current generated on the discharge path of the first signal line due to operational errors, thereby preventing the first electrostatic protection unit and the second electrostatic protection unit from being damaged by overcurrent.

[0004] In a first aspect, embodiments of the present invention provide a portable energy storage system, comprising:

[0005] Battery management module, main control module and at least one first signal line;

[0006] The battery management module includes a first control unit and a first electrostatic discharge (ESD) protection unit, and the first control unit is provided with a first communication control interface; the main control module includes a second control unit and a second ESD protection unit, and the second control unit is provided with a second communication control interface.

[0007] The first communication control interface is electrically connected to the second communication control interface via at least one first signal line;

[0008] At least one first current protection unit is connected in series on at least one discharge path of the first signal line.

[0009] Optionally, the battery management module further includes a first external interface and at least one first connection line;

[0010] The first communication control interface is electrically connected to the first external interface via at least one first connection line, and the first external interface is electrically connected to at least one first signal line;

[0011] The first current protection unit is connected in series on the first connecting line.

[0012] Optionally, the main control module further includes a second external interface and at least one second connection line;

[0013] The second communication control interface is electrically connected to the second external interface via at least one second connection line, and the second external interface is electrically connected to at least one first signal line;

[0014] The first current protection unit is connected in series on the second connection line.

[0015] Optionally, two first current protection units are connected in series on the same first signal transmission path, and the two first current protection units include a first sub-unit and a second sub-unit.

[0016] The battery management module further includes a first external interface and at least one first connection line;

[0017] The first communication control interface is electrically connected to the first external interface via at least one first connection line, and the first external interface is electrically connected to at least one first signal line;

[0018] The main control module also includes a second external interface and at least one second connection line;

[0019] The second communication control interface is electrically connected to the second external interface via at least one second connection line, and the second external interface is electrically connected to at least one first signal line;

[0020] The first sub-unit is connected in series on the first connecting line, and the second sub-unit is connected in series on the second connecting line.

[0021] Optionally, the first electrostatic discharge protection unit is disposed on the first node of the first connecting line, and the second electrostatic discharge protection unit is disposed on the second node of the second connecting line;

[0022] The first subunit is disposed between the first node and the first external interface, and the second subunit is disposed between the second node and the second external interface.

[0023] Optionally, the portable energy storage system further includes an inverter module and at least one second signal line;

[0024] The inverter module includes a third control unit and a third protection unit, and the third control unit is provided with a third communication control interface.

[0025] The first communication control interface is electrically connected to the third communication interface via at least one of the second signal lines;

[0026] At least one second current protection unit is connected in series on at least one discharge path of the second signal line.

[0027] Optionally, the first current protection unit includes a first resistor;

[0028] One end of the first resistor is electrically connected to the first signal line, and the other end of the first resistor is electrically connected to the first communication control interface or the second communication control interface.

[0029] The second current protection unit includes a second resistor;

[0030] One end of the second resistor is electrically connected to the second signal line, and the other end of the second resistor is electrically connected to the first communication control interface or the third communication control interface.

[0031] Optionally, the battery management module further includes a power supply output port and a charge / discharge control unit, wherein the charge / discharge control unit is electrically connected to the power supply output port;

[0032] The main control module also includes a first power supply port and a power supply unit. A capacitor unit is connected in parallel between the first power supply port and the power supply unit. One end of the capacitor unit is electrically connected to the main ground network.

[0033] The inverter module also includes a second power supply port;

[0034] The portable energy storage system also includes at least one first power supply line and at least one second power supply line;

[0035] The power output port is electrically connected to the first power supply port via the first power supply line;

[0036] The power output port is electrically connected to the second power supply port via the second power supply line.

[0037] Optionally, the first electrostatic discharge protection unit includes a first transient suppression diode, and the second electrostatic discharge protection unit includes a second transient suppression diode;

[0038] The first terminal of the first transient suppression diode is electrically connected to the first communication control interface, and the second terminal of the first transient suppression diode is electrically connected to the ground terminal;

[0039] The first terminal of the second transient suppression diode is electrically connected to the second communication control interface, and the second terminal of the second transient suppression diode is electrically connected to the ground terminal.

[0040] Optionally, the first signal line may include a communication signal line or a control signal line.

[0041] The portable energy storage system provided in this embodiment includes a battery management module, a main control module, and at least one first signal line. The battery management module includes a first control unit and a first electrostatic discharge (ESD) protection unit, with a first communication control interface on the first control unit. The main control module includes a second control unit and a second ESD protection unit, with a second communication control interface on the second control unit. The first communication control interface is electrically connected to the second communication control interface via at least one first signal line. At least one first current protection unit is connected in series along the discharge path of the at least one first signal line. Thus, the at least one first current protection unit reduces the instantaneous loop current generated in the discharge path of the first signal line due to improper operation, thereby preventing damage to the first and second ESD protection units due to overcurrent. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of a portable energy storage system provided in an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of another portable energy storage system provided in this embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of the structure of another portable energy storage system provided in this embodiment of the utility model;

[0045] Figure 4 This is a schematic diagram of the structure of another portable energy storage system provided in this embodiment of the utility model;

[0046] Figure 5 This is a schematic diagram of the structure of another portable energy storage system provided in this embodiment of the utility model;

[0047] Figure 6 This is a schematic diagram of another portable energy storage system provided in this embodiment of the utility model. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be fully described below with reference to the accompanying drawings of the embodiments of this utility model and through specific implementation methods. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort fall within the protection scope of this utility model.

[0049] Figure 1This is a schematic diagram of the structure of a portable energy storage system provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of another portable energy storage system provided in an embodiment of this utility model. See also... Figure 1 and Figure 2 The portable energy storage system includes a battery management module 10, a main control module 20, and at least one first signal line 30. The battery management module 10 includes a first control unit 110 and a first electrostatic discharge (ESD) protection unit 410. The first control unit 110 is equipped with a first communication control interface 111. The main control module 20 includes a second control unit 210 and a second ESD protection unit 420. The second control unit 210 is equipped with a second communication control interface 211. The first communication control interface 111 is electrically connected to the second communication control interface 211 via at least one first signal line 30. At least one first current protection unit 50 is connected in series along the discharge path of at least one first signal line 30.

[0050] Specifically, such as Figure 1 In the illustrated embodiment, the portable energy storage system includes a battery management module 10, which includes a first control unit 110, a power output port 120, and a charge / discharge control unit 130. The first control unit 110 can be a microcontroller unit of the battery management module 10, used to control the overall functions of the battery management module 10, such as voltage and current monitoring, equalization control, and thermal management. The charge / discharge control unit 130 is electrically connected to the power output port 120, enabling the power output port 120 to supply power to other modules. For example, when the charge / discharge control unit 130 is turned on, the power output port 120 can output power current to other modules; when the charge / discharge control unit 130 is turned off, the power output port 120 cannot output power current to other modules. The first control unit 110 includes a first communication control interface 111, used to transmit control signals or communication signals to other modules. Furthermore, the battery management module 10 also includes a first electrostatic discharge (ESD) protection unit 410, which is disposed on the first communication control interface 111 to provide ESD protection for the first communication control interface 111.

[0051] The main control module 20 includes a second control unit 210, a first power supply port 220, and a power supply unit 230. The second control unit 210 can be a microcontroller unit of the main control module 20, used to manage the operation of the entire portable energy storage system. The first power supply port 220 receives the power supply current from the power output port 120 of the battery management module 10 and transmits it to the power supply unit 230 to power the entire main control module 20. The second control unit 210 includes a second communication control interface 211, used to transmit control signals or communication signals to other modules. A second electrostatic discharge (ESD) protection unit 420 is disposed on the second communication interface 211 to provide ESD protection for the second communication control interface 211. Furthermore, the portable energy storage system also includes at least one first signal line 30, and the first communication control interface 111 is electrically connected to the second communication control interface 211 through at least one first signal line 30. Specifically, the first communication control interface 111 includes multiple first interfaces, and the second communication control interface 211 includes multiple second interfaces. One of the first interfaces in the battery management module 10 is electrically connected to the corresponding second interface in the main control module 20 through a first signal line 30 to form a first signal transmission path, such as... Figure 1 The illustrated embodiment uses one first signal transmission path as an example, but this is not a limitation. Other embodiments may use other numbers of first signal transmission paths, which can be configured as needed by those skilled in the art. It should be noted that the first signal line 30 can be either a communication signal line or a control signal line. When the first signal line 30 is a communication signal line, communication signals are transmitted on the first signal transmission path formed by the first communication control interface 111, the first signal line 30, and the second communication control interface 211. When the first signal line 30 is a control signal line, control signals are transmitted on the first signal transmission path formed by the first communication control interface 111, the first signal line 30, and the second communication control interface 211.

[0052] Based on the above, the portable energy storage system also includes a first power supply line 60, which is used to transmit the power supply current between the power supply output port 120 in the battery management module 10 and the first power supply port 220 in the main control module 20. In related technologies, when the battery management module 10 is mistakenly powered on (the charge / discharge control unit 130 of the battery management module 10 is turned on), and the wiring sequence is incorrect (the first signal line 30 is connected first, followed by the first power supply line 60 between the positive terminal of the power supply output port 120 and the positive terminal of the first power supply port 220), the power supply output port 120 can output a power supply current. This current flows through the positive terminal of the power supply output port 120, the first power supply line 60, the positive terminal of the first power supply port 220, and the capacitor unit between the first power supply port 220 and the power supply unit 230 (the capacitor unit is connected in parallel between the first power supply port 220 and the power supply unit 230, with one end of the capacitor unit electrically connected to the main ground network M-GND), reaching the main ground network M-GND. GND and the main ground network M-GND are also electrically connected to the second electrostatic discharge protection unit 420. Thus, the power supply current reaches the first electrostatic discharge protection unit 420 through the second electrostatic discharge protection unit 420 and the first signal line 30. One end of the first electrostatic discharge protection unit 410 is electrically connected to the ground terminal GND, and the negative terminal of the power supply output port 120 is electrically connected to the ground terminal GND. Thus, the power supply current reaches the negative terminal of the power supply output port 120 through the ground terminal GND to form a capacitor charging current loop. At this time, the instantaneous loop current in the capacitor charging current loop is large (far greater than the operating voltage of the first electrostatic discharge protection unit 410 and the second electrostatic discharge protection unit 420), which may cause the first electrostatic discharge protection unit 410 and the second electrostatic discharge protection unit 420 to be damaged due to overcurrent.

[0053] Therefore, in this embodiment of the utility model, based on the provision of a first electrostatic discharge protection unit 410 and a second electrostatic discharge protection unit 420 on the first signal transmission path, at least one first current protection unit 50 is connected in series on the discharge path of at least one first signal line 30. The first signal transmission path includes the discharge path of the first signal line 30. It can be understood that the discharge path of the first signal line 30 includes the transmission path that flows through the first signal line 30, the first electrostatic discharge protection unit 410, and the second electrostatic discharge protection unit 420. The first current protection unit 50 is used to provide power supply current to the positive terminal of the first power supply port 220 at the positive terminal of the power supply output port 120 (i.e., the power management module 10 is mistakenly powered on, and the first power supply line 60 between the positive terminals is connected first). When the first communication control interface 111 and the second communication control interface 211 are connected through the first signal line 30, the resistance of the first transmission path is increased, thereby reducing the instantaneous loop current of the capacitor charging current loop formed by the battery management module 10 and the main control module 20. This avoids the instantaneous loop current of the capacitor charging current loop being too large and damaging the first electrostatic protection unit 410 and the second electrostatic protection unit 420, reducing the cost of abnormalities caused by non-standard operation in testing and production, and improving the fault tolerance rate.

[0054] It should be noted that, Figure 1 This example only illustrates the situation by taking the discharge path of the first signal line 30 as an example, where the first current protection unit 50 is disposed on the first signal line 30, but it is not a limitation. In other embodiments, such as... Figure 2 As shown, the first current protection unit 50 can also be set between the first communication control interface 111 and the first signal line 30, which can be configured as needed by those skilled in the art. It is understood that when the battery management module 10 is mistakenly powered on, if the first power supply line 60 connecting the negative terminal of the power supply output port 120 and the negative terminal of the first power supply port 220 is connected first, then even if the first signal line 30 is connected between the first communication control interface 111 and the second communication control interface 211, a capacitor charging current loop cannot be formed between the battery management module 10 and the main control module 20.

[0055] In summary, this utility model embodiment provides a first current protection unit by connecting at least one first current protection unit in series on the discharge path of at least one first signal line. The first current protection unit is used to provide power supply current to the positive terminal of the power supply output port and the positive terminal of the first power supply port (i.e., the power management module is mistakenly powered on, and the first power supply line between the positive terminals is connected first). When the first communication control interface and the second communication control interface are connected through the first signal line, the resistance on the discharge path of the first signal line is increased, thereby reducing the instantaneous loop current of the capacitor charging current loop formed between the battery management module and the main control module. This avoids the instantaneous loop current of the capacitor charging current loop being too large and damaging the first electrostatic discharge protection unit and the second electrostatic discharge protection unit, reducing the cost of abnormalities caused by non-standard operation in testing and production, and improving the fault tolerance rate.

[0056] Optionally, based on the above embodiments, Figure 3 This is a schematic diagram of another portable energy storage system provided in this embodiment of the present invention. See also... Figure 3 The battery management module 10 also includes a first external interface 140 and at least one first connection line 150. A first communication control interface 111 is electrically connected to the first external interface 140 via at least one first connection line 150, and the first external interface 140 is electrically connected to at least one first signal line 30. A first current protection unit 50 is connected in series on the first connection line 150.

[0057] For example, such as Figure 3 In the illustrated embodiment, the portable energy storage system includes discharge paths for two first signal lines, and a first current protection unit 50 is connected in series on the discharge path of the same first signal line. Specifically, the first external interface 140 is a converter interface for connecting the internal interface (such as the first communication control interface 111) in the battery management module 10 to other external module interfaces. The first external interface 140 includes multiple third interfaces. One end of the third interface is electrically connected to the corresponding first interface in the first communication control interface 111 through the first connecting line 150, and the other end of the third interface is electrically connected to a first signal line 30, so that the first communication control interface 111 is electrically connected to at least one first signal line 30 through the first connecting line 150 and the first external interface 140, forming a connection within the battery management module 10. In a partial first signal transmission path, the first signal line 30 forms a discharge path for the first signal line 30 through the first connecting line 150 and the first electrostatic protection unit 410. The first current protection unit 50 is connected in series on the first connecting line 150, that is, the first current protection unit 50 is set inside the battery management module 10. This reduces the instantaneous loop current of the capacitor charging current loop formed between the battery management module 10 and the main control module 20, while ensuring that the setting method of the first current protection unit 50 is simple and that the first current protection unit 50 is not easily affected by the external environment.

[0058] In yet another embodiment, Figure 4 This is a schematic diagram of another portable energy storage system provided in this embodiment of the utility model. See also Figure 4 The main control module 20 also includes a second external interface 240 and at least one second connection line 250. The second communication control interface 211 is electrically connected to the second external interface 240 via at least one second connection line 250, and the second external interface 240 is electrically connected to at least one first signal line 30. A first current protection unit 50 is connected in series on the second connection line 250.

[0059] For example, such as Figure 4 In the illustrated embodiment, the portable energy storage system includes discharge paths for two first signal lines, and a first current protection unit 50 is connected in series on the discharge path of the same first signal line 30. Specifically, the second external interface 240 is a converter interface connecting the internal interface (such as the second communication control interface 211) in the main control module 20 with other external module interfaces. The second external interface 240 includes multiple fourth interfaces. One end of the fourth interface is electrically connected to the corresponding second interface in the second communication control interface 211 through the second connecting line 250, and the other end of the fourth interface is electrically connected to a first signal line 30, so that the second communication control interface 211 is electrically connected to at least one first signal line 30 through the second connecting line 250 and the second external interface 240, forming a connection in the main control module 20. In a partial first signal transmission path, the first signal line 30 forms a discharge path for the first signal line 30 through the second connecting line 250 and the second electrostatic protection unit 420. The first current protection unit 50 is connected in series on the second connecting line 250, that is, the first current protection unit 50 is set in the main control module. In this way, while reducing the instantaneous loop current of the capacitor charging current loop formed between the battery management module 10 and the main control module 20, the first current protection unit 50 is kept simple in its setting and is not easily affected by the external environment.

[0060] In yet another implementation, Figure 5 This is a schematic diagram of another portable energy storage system provided in this embodiment of the utility model. See also Figure 5The portable energy storage system includes discharge paths for two first signal lines 30, and two first current protection units 50 are connected in series on the discharge path of the same first signal line 30. Each first current protection unit 50 includes a first sub-unit 510 and a second sub-unit 520. The battery management module 10 also includes a first external interface 140 and at least one first connection line 150. The first communication control interface 111 is electrically connected to the first external interface 140 via at least one first connection line 150, and the first external interface 140 is electrically connected to at least one first signal line 30. The main control module 20 also includes a second external interface 240 and at least one second connection line 250. The second communication control interface 211 is electrically connected to the second external interface 240 through at least one second connection line 250. The second external interface 240 is electrically connected to at least one first signal line 30. Thus, the first interface of the first communication control interface 111 forms a first signal transmission through the corresponding first connection line 150, the corresponding third interface in the first external interface 140, the corresponding first signal line 30, the corresponding fourth interface in the second external interface 240, the corresponding second connection line 250, and the corresponding second interface in the second communication control interface 211. In the first signal transmission path, the first electrostatic discharge protection unit 410 forms a discharge path for the first signal line 30 through the first connecting line 150, the first signal line 30, the second connecting line 250, and the second electrostatic discharge protection unit 420. Based on this, the first sub-unit 510 is connected in series on the first connecting line 150, and the second sub-unit 520 is connected in series on the second connecting line 250. By connecting two first current protection units 50 in series on the discharge path of the first signal line 30, the instantaneous loop current of the capacitor charging current loop caused by improper operation is further reduced, thereby reducing the cost of abnormalities caused by improper operation in testing and production.

[0061] Optionally, based on the above embodiments, see also... Figure 5 The first electrostatic discharge (ESD) protection unit 410 is disposed on the first node N1 of the first connecting line 150, and the second ESD protection unit 420 is disposed on the second node N2 of the second connecting line 250. A first sub-unit 510 is disposed between the first node N1 and the first external interface 140, and a second sub-unit 520 is disposed between the second node N2 and the second external interface 240. Specifically, the first sub-unit 510 is disposed between the first ESD protection unit 410 and the first external interface 140, and the second sub-unit 520 is disposed between the second ESD protection unit 420 and the second external interface 240. This ensures that the first sub-unit 510 increases the resistance between the first ESD protection unit 410 and the first signal line 30, and the second sub-unit 520 increases the resistance between the second ESD protection unit 420 and the first signal line 30, thereby preventing damage to the first ESD protection unit 410 and the second ESD protection unit 420 due to overcurrent.

[0062] Optionally, in yet another embodiment, Figure 6 This is a schematic diagram of another portable energy storage system provided in this embodiment of the utility model. See also Figure 6 The portable energy storage system also includes an inverter module 70 and at least one second signal line 80. The inverter module 70 includes a third control unit 710 and a third electrostatic discharge (ESD) protection unit 730. The third control unit 710 is equipped with a third communication control interface 711. The first communication control interface 711 is electrically connected to the third communication control interface 711 via at least one second signal line 80. At least one second current protection unit 90 is connected in series along the discharge path of the at least one second signal line 80.

[0063] Specifically, such as Figure 6 In the illustrated embodiment, the portable energy storage system further includes an inverter module 70. The inverter module 70 includes a third control unit 710 and a second power supply port 720. The third control unit 710 can be a microcontroller unit of the inverter module 70, used to perform functions such as power conversion and voltage and frequency adaptation. The second power supply port 720 is connected to the power output port 120 and is used to receive the power supply current output from the power output interface 120 in the battery management module 10. The third control unit 710 includes a third communication control interface 711, which is used to transmit control signals or communication signals to other modules. Furthermore, the portable energy storage system also includes at least one second signal line 80. The first communication control interface 111 is electrically connected to the third communication control interface 711 through at least one second signal line 80 to form at least one second signal transmission path. Specifically, the first communication control interface 111 includes multiple first interfaces, and the third communication control interface 711 includes multiple fifth interfaces. One of the first interfaces in the battery management module 10 is electrically connected to the corresponding fifth interface in the inverter module 70 through a second signal line 80 to form a second signal transmission path. The second signal transmission path includes the discharge path of the second signal line 80. The discharge path of the second signal line 80 includes the transmission path flowing through the second signal line 30, the first electrostatic discharge protection unit 410, and the third electrostatic discharge protection unit 430.

[0064] It is understandable that the second signal line 80 can be either a communication signal line or a control signal line. When the first signal line 80 is a communication signal line, communication signals are transmitted on the second signal transmission path formed by the first communication control interface 111, the second signal line 80, and the third communication control interface 711. When the second signal line 80 is a control signal line, control signals are transmitted on the second signal transmission path formed by the first communication control interface 111, the second signal line 80, and the third communication control interface 711.

[0065] In addition, the inverter module 70 also includes a third external interface 740 and a third connection line 750. The third external interface 740 is a converter interface for connecting internal interfaces (such as the third communication control interface 711) in the inverter module 70 to interfaces of other external modules. The third external interface 740 includes multiple sixth interfaces. One end of the sixth interface is electrically connected to the corresponding fifth interface in the third communication control interface 711 through the third connecting line 750. The other end of the sixth interface is electrically connected to a second signal line 80, so that the third communication control interface 710 is electrically connected to at least one second signal line 80 through the third connecting line 750 and the third external interface 740, forming a partial second signal transmission path in the inverter module 70. On this second signal transmission path, the second signal line 80 forms a discharge path for the second signal line 80 through the first connecting line 150 and the first electrostatic protection unit 410. The second current protection unit 90 is connected in series on the third connecting line 750, thereby reducing the instantaneous loop current of the capacitor charging current loop formed between the battery management module 10 and the main control module 20, ensuring that the setting method of the second current protection unit 90 is simple, and that the second current protection unit 90 is not easily affected by the external environment.

[0066] It should be noted that the third electrostatic discharge protection unit 730 is connected in parallel on the third node N3 of the third connecting line 750, and the second current protection unit 90 can be located between the third node N3 and the third external interface 740.

[0067] Optionally, based on the above embodiments, see also... Figure 3 and Figure 4 The battery management module 10 also includes a power output port 120 and a charge / discharge control unit 130. The charge / discharge control unit 130 is electrically connected to the power output port 120 to enable the power output port 120 to supply power to other modules. The main control module 20 also includes a first power supply port 220 and a power supply unit 230. A capacitor unit is connected in parallel between the first power supply port 220 and the power supply unit 230, and one end of the capacitor unit is electrically connected to the main ground network M-GND. The inverter module 70 also includes a second power supply port 720. The portable energy storage system also includes at least one first power supply line 60 and at least one second power supply line 100. The power output port 120 is electrically connected to the first power supply port 220 through the first power supply line 60 to enable the battery management module 10 to supply power to the main control module 20. The power output port 120 is electrically connected to the second power supply port 720 through the second power supply line 100 to enable the battery management module 10 to supply power to the inverter module 70.

[0068] Optionally, based on the above embodiments, see also... Figure 3 and Figure 4The first current protection unit 50 includes a first resistor R1. One end of the first resistor R1 is electrically connected to the first signal line 30, and the other end is electrically connected to either the first communication control interface 111 or the second communication control interface 211. For example, when the first resistor R1 is located in the battery management module 10, one end of the first resistor R1 is electrically connected to the first signal line 30, and the other end is electrically connected to the first communication control interface 111. When the first resistor R1 is located in the main control module 20, one end of the first resistor R1 is electrically connected to the first signal line 30, and the other end is electrically connected to the second communication control interface 211. Thus, by connecting the first resistor R1 in series in the discharge path of the first signal line 30, the instantaneous loop current of the capacitor charging current loop formed by the battery management module 10 and the main control module 20 during improper operation is reduced, thereby reducing the cost of abnormalities caused by improper operation during testing and production. The second current protection unit 90 includes a second resistor R2. One end of the second resistor R2 is electrically connected to the second signal line 80, and the other end of the second resistor R2 is electrically connected to either the first communication control interface 111 or the third communication control interface 711. For example, when the second resistor R2 is located in the battery management module 10, one end of the second resistor R2 is electrically connected to the second signal line 80, and the other end is electrically connected to the first communication control interface 111. When the second resistor R2 is located in the inverter module 70, one end of the second resistor R2 is electrically connected to the second signal line 80, and the other end is electrically connected to the third communication control interface 711. Thus, by connecting the second resistor R2 in series in the discharge path of the second signal line 80, the instantaneous loop current in the charging current loop formed by the battery management module 10 and the inverter module 70 under improper operation is reduced, thereby lowering the cost of abnormalities caused by improper operation during testing and production.

[0069] It should be noted that, based on the above embodiments, [further details are needed]. Figure 3 The first current protection unit 50 includes a first subunit 510 and a second subunit 520. Both the first subunit 510 and the second subunit 520 include a first resistor R1. The resistance value of the first resistor R1 in the first subunit 510 can be set according to the surge current withstand capability of the first electrostatic protection unit 410. The resistance value of the first resistor R1 in the second subunit 520 can be set according to the surge current withstand capability of the second electrostatic protection unit 420. At the same time, it is also necessary to ensure that the resistance values ​​of the first resistor R1 in the first subunit 510 and the first resistor R1 in the second subunit 520 do not affect the signal transmission in the first signal line 30.

[0070] Optionally, based on the above embodiments, see also... Figure 6The first electrostatic discharge (ESD) protection unit 410 includes a first transient suppression diode D1, and the second ESD protection unit 420 includes a second transient suppression diode D2. The first terminal of the first transient suppression diode D1 is electrically connected to the first communication control interface 111, and the second terminal of the first transient suppression diode D1 is electrically connected to the ground terminal GND. This first transient suppression diode D1 limits the current of the first communication control interface 111, and releases the current to the ground terminal GND when the current exceeds the limit. The first terminal of the second transient suppression diode D2 is electrically connected to the second communication control interface 211, and the second terminal of the second transient suppression diode D2 is electrically connected to the main ground network M-GND. This second transient suppression diode D2 limits the current of the second communication control interface 211, and releases the current to the main ground network M-GND when the current exceeds the limit. The third electrostatic discharge protection unit 730 includes a third transient suppression diode D3. The first end of the third transient suppression diode D3 is electrically connected to the third communication control interface 711, and the second end is electrically connected to the ground terminal GND. The third transient suppression diode D3 limits the current of the third communication control interface 711, and releases the current to the ground terminal GND when the current exceeds the limit.

[0071] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A portable energy storage system, characterized in that, It includes a battery management module, a main control module, and at least one first signal line; The battery management module includes a first control unit and a first electrostatic protection unit, and the first control unit is provided with a first communication control interface. The main control module includes a second control unit and a second electrostatic protection unit, and the second control unit is provided with a second communication control interface. The first communication control interface is electrically connected to the second communication control interface via at least one first signal line; At least one first current protection unit is connected in series on at least one discharge path of the first signal line.

2. The portable energy storage system according to claim 1, characterized in that, The battery management module further includes a first external interface and at least one first connection line; The first communication control interface is electrically connected to the first external interface via at least one first connection line, and the first external interface is electrically connected to at least one first signal line; The first current protection unit is connected in series on the first connecting line.

3. The portable energy storage system according to claim 1, characterized in that, The main control module also includes a second external interface and at least one second connection line; The second communication control interface is electrically connected to the second external interface via at least one second connection line, and the second external interface is electrically connected to at least one first signal line; The first current protection unit is connected in series on the second connection line.

4. The portable energy storage system according to claim 1, characterized in that, On the same first signal transmission path, two first current protection units are connected in series, and the two first current protection units include a first sub-unit and a second sub-unit. The battery management module further includes a first external interface and at least one first connection line; The first communication control interface is electrically connected to the first external interface via at least one first connection line, and the first external interface is electrically connected to at least one first signal line; The main control module also includes a second external interface and at least one second connection line; The second communication control interface is electrically connected to the second external interface via at least one second connection line, and the second external interface is electrically connected to at least one first signal line; The first sub-unit is connected in series on the first connecting line, and the second sub-unit is connected in series on the second connecting line.

5. The portable energy storage system according to claim 4, characterized in that, The first electrostatic discharge protection unit is disposed on the first node of the first connecting line, and the second electrostatic discharge protection unit is disposed on the second node of the second connecting line; The first subunit is disposed between the first node and the first external interface, and the second subunit is disposed between the second node and the second external interface.

6. The portable energy storage system according to claim 1, characterized in that, The portable energy storage system also includes an inverter module and at least one second signal line; The inverter module includes a third control unit and a third protection unit, and the third control unit is provided with a third communication control interface. The first communication control interface is electrically connected to the third communication interface via at least one of the second signal lines; At least one second current protection unit is connected in series on at least one discharge path of the second signal line.

7. The portable energy storage system according to claim 6, characterized in that, The first current protection unit includes a first resistor; One end of the first resistor is electrically connected to the first signal line, and the other end of the first resistor is electrically connected to the first communication control interface or the second communication control interface. The second current protection unit includes a second resistor; One end of the second resistor is electrically connected to the second signal line, and the other end of the second resistor is electrically connected to the first communication control interface or the third communication control interface.

8. The portable energy storage system according to claim 6, characterized in that, The battery management module also includes a power supply output port and a charge / discharge control unit, wherein the charge / discharge control unit is electrically connected to the power supply output port. The main control module also includes a first power supply port and a power supply unit. A capacitor unit is connected in parallel between the first power supply port and the power supply unit. One end of the capacitor unit is electrically connected to the main ground network. The inverter module also includes a second power supply port; The portable energy storage system also includes at least one first power supply line and at least one second power supply line; The power output port is electrically connected to the first power supply port via the first power supply line; The power output port is electrically connected to the second power supply port via the second power supply line.

9. The portable energy storage system according to claim 1, characterized in that, The first electrostatic discharge (ESD) protection unit includes a first transient suppression diode, and the second ESD protection unit includes a second transient suppression diode; The first terminal of the first transient suppression diode is electrically connected to the first communication control interface, and the second terminal of the first transient suppression diode is electrically connected to the ground terminal; The first terminal of the second transient suppression diode is electrically connected to the second communication control interface, and the second terminal of the second transient suppression diode is electrically connected to the main ground network.

10. The portable energy storage system according to claim 1, characterized in that, The first signal line includes a communication signal line or a control signal line.

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