Energy storage equipment

Abstract

The utility model provides energy storage equipment, and the equipment comprises a control module which comprises a triggering pin for transmitting a triggering signal, and a triggered pin for receiving the triggering signal; one end of the trigger circuit is connected with a trigger pin of the control module; the first cascade interface comprises a trigger contact led out from the other end of the trigger circuit; the second cascade interface comprises a triggered contact led out from a triggered pin of the control module; wherein the first cascade interface of one energy storage device is used for being connected with the second cascade interface of the other energy storage device, and the trigger contact of the first cascade interface of one energy storage device is used for being connected with the triggered contact of the second cascade interface of the other energy storage device.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and in particular to an energy storage device. Background Art

[0002] In the prior art, multiple energy storage devices achieve communication between multiple energy storage systems by connecting interfaces in sequence, and each energy storage device confirms connection to other energy storage devices through communication. In order to achieve communication and control between multiple energy storage devices, the control module of each energy storage device requires multiple pins. As a result, the interface of the energy storage device includes multiple pin-out connection points, so the cost of the selected control module and interface is relatively high. Utility Model Content

[0003] In view of this, the purpose of the present application is to provide an energy storage device, which can be equipped with two cascade interfaces, and a trigger contact led from a trigger pin of a control module is arranged in one cascade interface, and a triggered contact led from a triggered pin of the control module is arranged in the other cascade interface. Furthermore, when the cascade interface of one energy storage device is connected to another cascade interface of another energy storage device, a trigger signal emitted by the control module of one energy storage device can be sent to the control module of the other energy storage device through the cascade interface, thereby realizing step-by-step control of multiple energy storage devices through the cascade interface so as to facilitate orderly allocation of addresses between the energy storage devices, solving the technical problem in the prior art that multiple connection contacts need to be arranged in the interface to realize control and communication between devices, and achieving the technical effect of reducing the contacts in the interface and saving costs.

[0004] In a first aspect, an embodiment of the present application provides an energy storage device, comprising: a control module, the control module comprising a trigger pin for sending a trigger signal and a triggered pin for receiving a trigger signal; a trigger circuit, one end of the trigger circuit being connected to the trigger pin of the control module; a first cascade interface, the first cascade interface comprising a trigger contact led out from the other end of the trigger circuit; a second cascade interface, the second cascade interface comprising a triggered contact led out from the triggered pin of the control module; wherein the first cascade interface of one energy storage device is used to connect to the second cascade interface of another energy storage device, and the trigger contact of the first cascade interface of one energy storage device is used to connect to the triggered contact of the second cascade interface of another energy storage device.

[0005] Optionally, the trigger circuit includes a first isolation device, a first resistor and a second resistor, wherein a first pin of the input end of the first isolation device is connected to one end of the first resistor, the other end of the first resistor is connected to the trigger pin of the control module, the second pin of the input end of the first isolation device is grounded, the third pin of the output end of the first isolation device is connected to one end of the second resistor, the other end of the second resistor is connected to a first preset power supply, and the fourth pin of the output end of the first isolation device serves as the trigger contact of the first cascade interface.

[0006] Optionally, the energy storage device also includes a triggered circuit, which is arranged between the triggered pin of the control module and the triggered contact of the second cascade interface, and the triggered circuit includes a second isolation device, a third resistor and a fourth resistor, wherein a first pin of the input end of the second isolation device is connected to one end of the third resistor, and the other end of the third resistor is led out as the triggered contact of the second cascade interface, a second pin of the input end of the second isolation device is grounded, a third pin of the output end of the second isolation device is connected to a second preset power supply, a fourth pin of the output end of the second isolation device is respectively connected to one end of the fourth resistor and the triggered pin of the control module, and the other end of the fourth resistor is grounded.

[0007] Optionally, the energy storage device also includes: a battery; a logic gate activation circuit, one end of the logic gate activation circuit is connected to the battery, and the other end of the logic gate activation circuit is led out as an isolated power contact of the second cascade interface, and the isolated power contact provides a first preset power supply, wherein the receiving end of the logic gate activation circuit includes a first receiving end, and the first receiving end is led out as a locking contact of the second cascade interface.

[0008] Optionally, the energy storage device also includes a button, and the receiving end of the logic gate activation circuit also includes a second receiving end and a third receiving end, the second receiving end is connected to the trigger pin of the control module, and the third receiving end is used to receive the activation signal sent when the button is pressed; wherein, the logic gate activation circuit is configured to: when a preset level signal is received at any receiving end of the logic gate activation circuit, the power of the battery is controlled to be transmitted to the isolated power contacts of the second cascade interface.

[0009] Optionally, the energy storage device further includes a locking circuit, which is arranged between the first receiving end and the locking contact of the second cascade interface, and the first cascade interface further includes a null contact, and the null contact of the first cascade interface of one energy storage device is used to connect the locking contact of the second cascade interface of another energy storage device; wherein the locking circuit includes a third isolation device and a fifth resistor, wherein a first pin of the input end of the third isolation device is connected to the locking contact of the second cascade interface, a second pin of the input end of the third isolation device is connected to one end of the fifth resistor, the other end of the fifth resistor is grounded, a third pin of the output end of the third isolation device is connected to the first receiving end, and a fourth pin of the output end of the third isolation device is grounded.

[0010] Optionally, the first cascade interface further includes an access detection contact, which is connected to the empty contact, and the access detection contact of the first cascade interface of one energy storage device is used to connect to the isolated power contact of the second cascade interface of another energy storage device.

[0011] Optionally, the energy storage device further includes: a first access detection circuit, one end of the first access detection circuit being connected to an access detection contact of the first cascade interface, and the other end of the first access detection circuit being connected to a first access detection pin of the control module; and a second access detection circuit, one end of the second access detection circuit being connected to a locking contact of the second cascade interface, and the other end of the second access detection circuit being connected to a second access detection pin of the control module.

[0012] Optionally, the first access detection circuit includes a fourth isolation device, a sixth resistor and a seventh resistor, wherein a first pin of the input end of the fourth isolation device is connected to the access detection contact of the first cascade interface, a second pin of the input end of the fourth isolation device is connected to one end of the sixth resistor, the other end of the sixth resistor is grounded, a third pin of the output end of the fourth isolation device is connected to a second preset power supply, a fourth pin of the output end of the fourth isolation device is respectively connected to the first access detection pin of the control module and one end of the seventh resistor, and the other end of the seventh resistor is grounded.

[0013] Optionally, the second access detection circuit includes a fifth isolation device, an eighth resistor and a ninth resistor, wherein a first pin of the input end of the fifth isolation device is connected to the locking contact of the second cascade interface, a second pin of the input end of the fifth isolation device is connected to one end of the eighth resistor, the other end of the eighth resistor is grounded, a third pin of the output end of the fifth isolation device is connected to a second preset power supply, a fourth pin of the output end of the fifth isolation device is respectively connected to the second access detection pin of the control module and one end of the ninth resistor, and the other end of the ninth resistor is grounded.

[0014] Optionally, the first cascade interface also includes a first cascade communication contact, and the second cascade interface also includes a second cascade communication contact, wherein the second cascade communication contact is led out from the cascade communication pin of the control module, and the first cascade communication contact is led out from a preset point on the connecting line between the second cascade communication contact and the cascade communication pin of the control module, and the first cascade communication contact of the first cascade interface of one energy storage device is used to connect the second cascade communication contact of the second cascade interface of another energy storage device.

[0015] Optionally, the cascade communication pin of the control module includes a first cascade communication pin and a second cascade communication pin, the first cascade communication contact includes a first cascade communication sub-contact and a second cascade communication sub-contact, and the second cascade communication contact includes a third cascade communication sub-contact and a fourth cascade communication sub-contact, wherein the third cascade communication sub-contact is led out from the first cascade communication pin of the control module, the fourth cascade communication sub-contact is led out from the second cascade communication pin of the control module, the first cascade communication sub-contact is led out from a first preset point on the connecting line between the third cascade communication sub-contact and the first cascade communication pin of the control module, and the second cascade communication sub-contact is led out from a second preset point on the connecting line between the fourth cascade communication sub-contact and the second cascade communication pin of the control module.

[0016] Optionally, the energy storage device also includes a selection circuit, one end of the selection circuit is connected to the communication resistor selection pin of the control module, and the other end of the selection circuit is connected to the connection line between the cascade communication pin and the second cascade communication contact, wherein the selection circuit includes a sixth isolation device, a tenth resistor and an eleventh resistor, a first pin of the input end of the sixth isolation device is connected to one end of the tenth resistor, the other end of the tenth resistor is connected to the communication resistor selection pin of the control module, the second pin of the input end of the sixth isolation device is grounded, the third pin of the output end of the sixth isolation device is connected to one end of the eleventh resistor, the other end of the eleventh resistor is connected between the first cascade communication pin of the control module and the third cascade communication sub-contact, and the fourth pin of the output end of the sixth isolation device is connected between the second cascade communication pin of the control module and the fourth cascade communication sub-contact.

[0017] Optionally, the energy storage device further includes a power supply circuit and an isolation circuit, the power supply circuit and the isolation circuit are arranged between the other end of the logic gate activation circuit and the isolation power contact of the second cascade interface, one end of the power supply circuit is connected to the other end of the logic gate activation circuit, the other end of the power supply circuit is connected to one end of the isolation circuit, and the other end of the isolation circuit is led out as the isolation power contact of the second cascade interface; and / or, the energy storage device further includes a standby power circuit, one end of the standby power circuit is connected to the battery, and the other end of the standby power circuit provides a second preset power supply.

[0018] Optionally, the energy storage device further includes a voltage stabilizer, one end of the voltage stabilizer is connected to the other end of the power supply circuit, and the other end of the voltage stabilizer provides a second preset power supply.

[0019] Optionally, the first cascade interface further includes a first external communication contact, and the second cascade interface further includes a second external communication contact, wherein the first external communication contact is left blank, and the second external communication contact is led out from the external communication pin of the control module, and is used to connect the communication interface of an external device, and the first external communication contact of the first cascade interface of an energy storage device is used to connect the second external communication contact of the second cascade interface of another energy storage device; and / or, the energy storage device further includes a power output interface, and the power output interface is led out from the battery of the energy storage device, and is used to charge or discharge the energy storage device and to connect multiple energy storage devices in series or in parallel.

[0020] An energy storage device provided in an embodiment of the present application comprises: a control module, the control module comprising a trigger pin for sending a trigger signal and a triggered pin for receiving a trigger signal; a trigger circuit, one end of the trigger circuit being connected to the trigger pin of the control module; a first cascade interface, the first cascade interface comprising a trigger contact led out from the other end of the trigger circuit; a second cascade interface, the second cascade interface comprising a triggered contact led out from the triggered pin of the control module; wherein the first cascade interface of one energy storage device is used to connect to the second cascade interface of another energy storage device, and the trigger contact of the first cascade interface of one energy storage device is used to connect to the triggered contact of the second cascade interface of another energy storage device. By setting two cascade interfaces, and setting a trigger contact derived from a trigger pin of a control module in one cascade interface and setting a triggered contact derived from a triggered pin of the control module in the other cascade interface, when the cascade interface of one energy storage device is connected to another cascade interface of another energy storage device, a trigger signal sent by a control module of one energy storage device can be sent to the control module of another energy storage device through the cascade interface, thereby realizing step-by-step control of multiple energy storage devices through the cascade interface so as to orderly allocate addresses between the energy storage devices, solving the technical problem in the prior art that multiple connection contacts need to be set in the interface to realize control and communication between devices, and achieving the technical effect of reducing contacts in the interface and saving costs.

[0021] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic structural diagram of an energy storage device provided in an embodiment of the present application is shown.

[0024] Figure 2 A schematic diagram of cascading multiple energy storage devices provided in an embodiment of the present application is shown.

[0025] Figure 3 A circuit diagram of an energy storage device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, each other embodiment obtained by those skilled in the art without making creative work belongs to the scope of protection of the present application.

[0027] In the prior art, an interface that can realize cascading between multiple energy storage devices includes multiple connection contacts. In order to realize the control and communication functions between the cascaded multiple energy storage devices, multiple pins of the control module of the energy storage device need to be led out to the interface to facilitate communication and control between the multiple energy storage devices, resulting in the control module and the interface requiring multiple pins, which increases costs.

[0028] In view of the above problems, an embodiment of the present application provides an energy storage device, which provides two cascade interfaces, and a trigger contact derived from a trigger pin of a control module is provided in one cascade interface, and a triggered contact derived from a triggered pin of the control module is provided in the other cascade interface. Furthermore, when a cascade interface of one energy storage device is connected to another cascade interface of another energy storage device, a trigger signal emitted by a control module of one energy storage device can be sent to the control module of another energy storage device through the cascade interface, thereby realizing step-by-step control of multiple energy storage devices through the cascade interface so as to facilitate orderly allocation of addresses between energy storage devices, solving the technical problem in the prior art that multiple connection contacts need to be provided in the interface to realize control and communication between devices, and achieving the technical effect of reducing contacts in the interface and saving costs, as follows:

[0029] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of an energy storage device provided in an embodiment of the present application. Figure 1As shown, the energy storage device provided in the embodiment of the present application includes: a control module MCU, the control module includes a trigger pin ADDO for sending a trigger signal and a triggered pin ADDIN for receiving a trigger signal; a trigger circuit 101, one end of the trigger circuit is connected to the trigger pin of the control module; a first cascade interface J1, the first cascade interface includes a trigger contact ADDIN-U led out from the other end of the trigger circuit; a second cascade interface J2, the second cascade interface includes a triggered contact ADDIN-D led out from the triggered pin of the control module; wherein the first cascade interface of one energy storage device is used to connect the second cascade interface of another energy storage device, and the trigger contact of the first cascade interface of one energy storage device is used to connect the triggered contact of the second cascade interface of another energy storage device.

[0030] Among them, the trigger pin of the control module is used to send out a trigger signal, and the triggered pin of the control module is used to activate the energy storage device when receiving the trigger signal and control the trigger pin to send out the trigger signal.

[0031] That is, when the first cascade interface of one energy storage device is connected to the second cascade interface of another energy storage device, the trigger contact in the first cascade interface of one energy storage device is connected to the triggered contact in the second cascade interface of the other energy storage device. Furthermore, when the trigger pin of the control module of one energy storage device sends a trigger signal, the triggered pin of the control module of the other energy storage device receives the trigger signal, so that the other energy storage device is activated and the trigger pin of the control module of the other energy storage device sends a trigger signal.

[0032] See also Figure 2 , Figure 2 This is a schematic diagram of a plurality of energy storage devices cascaded in an embodiment of the present application. Figure 2 As shown, multiple energy storage devices 10 are connected in sequence by connecting the first cascade interface of one energy storage device to the second cascade interface of the next energy storage device. Furthermore, multiple energy storage devices can be activated in sequence by sending a trigger signal from one energy storage device to the next energy storage device. When the energy storage device is activated, it can perform a discharge operation or a charging operation.

[0033] Furthermore, the trigger signal may also include address information and / or device identification of the energy storage device, and further, the control module is configured to sequentially determine the address information and / or device identification of its own energy storage device upon receiving the address information and / or device identification of the previous energy storage device.

[0034] Exemplarily, if n energy storage devices are connected in sequence, the second cascade interface of the first energy storage device is not connected, and the first cascade interface of the nth energy storage device is not connected. The trigger pin of the control module of the first energy storage device sends a trigger signal, so that the triggered pin of the control module of the second energy storage device receives the trigger signal so that the second energy storage device is activated, and then each energy storage device can be activated in sequence. In addition, the activation signal sent by the first energy storage device includes the device identification of the first energy storage device, for example, the device identification is 001, and then, after the second energy storage device learns that the device identification of the first energy storage device is 001, it automatically adds one, and the device identification of the second energy storage device becomes 002, and so on. Each energy storage device can learn its own address and / or identification in sequence, so as to facilitate the subsequent determination of the main energy storage device and control of multiple energy storage devices through the main energy storage device.

[0035] For example, the preset number of the main energy storage device is set to 001, and then each energy storage device can know whether it is the main energy storage device, and the main energy storage device can actively send a trigger signal to inform other devices that they can be activated, and then each energy storage device is activated in turn. Therefore, multiple energy storage devices do not need to pre-define their own addresses and identifiers, but are adjusted each time according to the cascaded multiple energy storage devices, increasing the application scenarios of energy storage devices, and can be replaced at will.

[0036] See also Figure 1 and Figure 3 , Figure 3 A circuit diagram of an energy storage device provided in an embodiment of the present application. Figure 1 and Figure 3 As shown, the trigger circuit 101 includes a first isolation device U1, a first resistor R1 and a second resistor R2, wherein a first pin of the input end of the first isolation device is connected to one end of the first resistor, the other end of the first resistor is connected to a trigger pin ADDO of the control module, a second pin of the input end of the first isolation device is grounded, a third pin of the output end of the first isolation device is connected to one end of the second resistor, the other end of the second resistor is connected to a first preset power supply, and a fourth pin of the output end of the first isolation device serves as the trigger contact ADDIN-U of the first cascade interface.

[0037] Exemplarily, the first isolation device is configured as a photocoupler, and the grounding point connected to the second pin of the input end of the first isolation device is the negative electrode GND1 of the battery. The first pin of the input end of the first isolation device is the anode of the photocoupler, the second pin of the input end of the first isolation device is the cathode of the photocoupler, the third pin of the output end of the first isolation device is the collector of the photocoupler, and the fourth pin of the output end of the first isolation device is the emitter of the photocoupler.

[0038] Furthermore, when the trigger pin of the control module sends a trigger signal, the light source in the first isolation device is turned on through the first resistor to convert the trigger signal into a light signal, so that the light receiving light in the first isolation device is turned on, and then the electric energy of the first preset power source flows to the trigger contact of the first cascade interface through the second resistor and the light receiving light. Therefore, if an energy storage device is connected to another energy storage device through a cascade interface, the trigger signal sent by one energy storage device is sent to the triggered contact of the second cascade interface of the other energy storage device through the first cascade interface of the one energy storage device, so that the triggered pin of the control module of the other energy storage device receives the trigger signal sent by one energy storage device.

[0039] The energy storage device also includes a triggered circuit 102, which is arranged between the triggered pin ADDIN of the control module and the triggered contact ADDIN-D of the second cascade interface. The triggered circuit includes a second isolation device U2, a third resistor R3 and a fourth resistor R4, wherein a first pin of the input end of the second isolation device is connected to one end of the third resistor, and the other end of the third resistor is led out as the triggered contact of the second cascade interface, a second pin of the input end of the second isolation device is grounded, a third pin of the output end of the second isolation device is connected to a second preset power supply V2, a fourth pin of the output end of the second isolation device is respectively connected to one end of the fourth resistor and the triggered pin of the control module, and the other end of the fourth resistor is grounded.

[0040] Exemplarily, the second isolation device is configured as a photocoupler, the grounding point connected to the second pin of the input end of the second isolation device is the preset isolation ground GND2, and the grounding point of the other end of the fourth resistor is the negative electrode GND1 of the battery. Among them, the first pin of the input end of the second isolation device is the anode of the photocoupler, the second pin of the input end of the second isolation device is the cathode of the photocoupler, the third pin of the output end of the second isolation device is the collector of the photocoupler, and the fourth pin of the output end of the second isolation device is the emitter of the photocoupler.

[0041] Furthermore, after one energy storage device is connected to another energy storage device through a cascade interface, a trigger signal sent by one energy storage device is sent to a triggered contact of a second cascade interface of another energy storage device through a first cascade interface of one energy storage device. When the light source in the second isolation device of another energy storage device is turned on, the light receiving light in the second isolation device of another energy storage device is turned on, so that the second preset power source connected to the second isolation device of another energy storage device is transmitted to the triggered pin of the control module of another energy storage device through the light receiving light, so that multiple energy storage devices are activated in sequence through the cascade interface.

[0042] The energy storage device also includes: a battery BAT; a logic gate activation circuit 201, one end of the logic gate activation circuit is connected to the battery, and the other end of the logic gate activation circuit leads to an isolated power contact V1 as the second cascade interface, and the isolated power contact provides a first preset power supply V1, wherein the receiving end of the logic gate activation circuit includes a first receiving end, and the first receiving end leads to a locking contact LOCK-IN as the second cascade interface.

[0043] That is, the logic gate activation circuit is used to control whether the battery transmits electric energy to the isolated power contact of the second cascade interface through the control signal received by the receiving end.

[0044] The receiving end of the logic gate activation circuit also includes a second receiving end, and the second receiving end V3 is connected to the trigger pin ADDO of the control module, wherein the logic gate activation circuit is configured to: when a preset level signal is received at any receiving end of the logic gate activation circuit, control the power of the battery to be transmitted to the isolated power contact of the second cascade interface. Exemplarily, the preset level signal is a high level signal.

[0045] The energy storage device further includes a button, and the receiving end of the logic gate activation circuit further includes a third receiving end, wherein the third receiving end is used to receive an activation signal SWIN sent when the button is pressed.

[0046] That is to say, when the key of the energy storage device is pressed, the third receiving end of the logic gate activation circuit receives a high-level signal, so that the battery's power is supplied to the outside through the logic gate activation circuit. Furthermore, after multiple energy storage devices are cascaded, only the key of the first energy storage device needs to be pressed to activate the first energy storage device, and the trigger pin of the first energy storage device sends a trigger signal to the outside to activate the energy storage devices in sequence.

[0047] That is to say, after one energy storage device is connected to another energy storage device through a cascade interface, the locking contact of the second cascade interface of the other energy storage device provides a low-level signal to the first receiving end of the logic gate activation circuit to lock the logic gate activation circuit. If the trigger pin of one energy storage device sends a trigger signal, the triggered pin of the other energy storage device receives the trigger signal, so that the trigger pin of the other energy storage device sends a trigger signal, so that the second receiving end of the logic gate activation circuit of the other energy storage device receives a high-level signal, so that the first receiving end and the second receiving end of the logic gate activation circuit have the second receiving end receiving the high-level signal, so as to realize the transmission of the battery's electrical energy to the outside through the logic gate activation circuit.

[0048] The energy storage device also includes a locking circuit 103, which is arranged between the first receiving end and the locking contact LOCK-IN of the second cascade interface. The first cascade interface also includes a reset contact P1. The reset contact of the first cascade interface of one energy storage device is used to connect the locking contact of the second cascade interface of another energy storage device.

[0049] That is to say, after one energy storage device is connected to another energy storage device through a cascade interface, the empty contact of the first cascade interface of one energy storage device is used to connect the locking contact of the second cascade interface of another energy storage device, so that the locking contact of the second cascade interface of the other energy storage device provides a low-level signal to the first receiving end of the logic gate activation circuit through the locking circuit, so as to prevent multiple energy storage devices from directly outputting electric energy after being connected, and instead activate the energy storage devices by transmitting trigger signals in sequence.

[0050] The locking circuit 103 includes a third isolation device U3 and a fifth resistor R5, wherein a first pin of the input end of the third isolation device is connected to the locking contact of the second cascade interface, a second pin of the input end of the third isolation device is connected to one end of the fifth resistor, the other end of the fifth resistor is grounded, a third pin of the output end of the third isolation device is connected to the first receiving end, and a fourth pin of the output end of the third isolation device is grounded.

[0051] Exemplarily, the third isolation device is configured as a photocoupler, the grounding point connected to the fourth pin of the output end of the third isolation device is the negative electrode GND1 of the battery, and the grounding point connected to the other end of the fifth resistor is the preset isolation ground GND2. Wherein, the first pin of the input end of the third isolation device is the anode of the photocoupler, the second pin of the input end of the third isolation device is the cathode of the photocoupler, the third pin of the output end of the third isolation device is the collector of the photocoupler, and the fourth pin of the output end of the third isolation device is the emitter of the photocoupler.

[0052] The first cascade interface also includes an access detection contact DCIN-LOCK, which is connected to the empty contact P1. The access detection contact of the first cascade interface of one energy storage device is used to connect to the isolated power contact of the second cascade interface of another energy storage device.

[0053] Furthermore, after one energy storage device is connected to another energy storage device through a cascade interface, the emptying contact of one energy storage device is connected to the isolated power contact V1 of the other energy storage device through the access detection contact of the energy storage device, so that the locking contact LOCK-IN of the other energy storage device is connected to the first preset power supply V1 through the emptying contact P1 of the one energy storage device. Furthermore, the light source of the third isolation device of the other energy storage device is turned on by the first preset power flowing through the fifth resistor, and the light receiving source of the third isolation device is turned on, so that the first receiving end of the logic gate activation circuit of the other energy storage device is connected to the negative electrode GND1 of the battery to provide a low-level signal to the first receiving end.

[0054] The energy storage device also includes: a first access detection circuit 104, one end of the first access detection circuit is connected to the access detection contact DCIN-LOCK of the first cascade interface, and the other end of the first access detection circuit is connected to the first access detection pin A1 of the control module; a second access detection circuit 105, one end of the second access detection circuit is connected to the locking contact LOCK-IN of the second cascade interface, and the other end of the second access detection circuit is connected to the second access detection pin A2 of the control module.

[0055] The control module is configured to detect whether the first cascade interface of the energy storage device is connected to the cascade interface of other energy storage devices through a first access detection circuit, and detect whether the second cascade interface of the energy storage device is connected to the cascade interface of other energy storage devices through a second access detection circuit.

[0056] The first access detection circuit 104 includes a fourth isolation device U4, a sixth resistor R6 and a seventh resistor R7, wherein a first pin of the input end of the fourth isolation device is connected to the access detection contact of the first cascade interface, a second pin of the input end of the fourth isolation device is connected to one end of the sixth resistor, the other end of the sixth resistor is grounded, a third pin of the output end of the fourth isolation device is connected to a second preset power supply, a fourth pin of the output end of the fourth isolation device is connected to the first access detection pin of the control module and one end of the seventh resistor respectively, and the other end of the seventh resistor is grounded.

[0057] Exemplarily, the fourth isolation device is configured as a photocoupler, the grounding point connected to the other end of the seventh resistor is the negative electrode GND1 of the battery, and the grounding point connected to the other end of the sixth resistor is the preset isolation ground GND2. Wherein, the first pin of the input end of the fourth isolation device is the anode of the photocoupler, the second pin of the input end of the fourth isolation device is the cathode of the photocoupler, the third pin of the output end of the fourth isolation device is the collector of the photocoupler, and the fourth pin of the output end of the fourth isolation device is the emitter of the photocoupler.

[0058] Furthermore, after one energy storage device is connected to another energy storage device through the cascade interface, the access detection contact DCIN-LOCK of one energy storage device is connected to the first preset power supply through the isolated power supply contact V1 of the other energy storage device, the electric energy of the first preset power supply flows through the sixth resistor to turn on the light source of the fourth isolation device, the light receiving light of the fourth isolation device is turned on, and the electric energy of the second preset power supply flows through the seventh resistor, so that the first access detection pin A1 of the control module of one energy storage device receives a high level, so that one energy storage device knows that the first cascade interface is connected to the cascade interface of the other energy storage device.

[0059] The second access detection circuit 105 includes a fifth isolation device U5, an eighth resistor R8 and a ninth resistor R9, wherein a first pin of the input end of the fifth isolation device is connected to the locking contact of the second cascade interface, a second pin of the input end of the fifth isolation device is connected to one end of the eighth resistor, the other end of the eighth resistor is grounded, a third pin of the output end of the fifth isolation device is connected to a second preset power supply, a fourth pin of the output end of the fifth isolation device is connected to the second access detection pin of the control module and one end of the ninth resistor respectively, and the other end of the ninth resistor is grounded.

[0060] Exemplarily, the fifth isolation device is configured as a photocoupler, the grounding point connected to the other end of the ninth resistor is the negative electrode GND1 of the battery, and the grounding point connected to the other end of the eighth resistor is the preset isolation ground GND2. Wherein, the first pin of the input end of the fifth isolation device is the anode of the photocoupler, the second pin of the input end of the fifth isolation device is the cathode of the photocoupler, the third pin of the output end of the fifth isolation device is the collector of the photocoupler, and the fourth pin of the output end of the fifth isolation device is the emitter of the photocoupler.

[0061] Furthermore, after one energy storage device is connected to another energy storage device through the cascade interface, the locking contact LOCK-IN of the other energy storage device is connected to the first preset power supply through the emptying contact of one energy storage device, the access detection contact DCIN-LOCK of one energy storage device, and the isolated power supply contact V1 of the other energy storage device, the electric energy of the first preset power supply flows through the eighth resistor to turn on the light source of the fifth isolation device, the light receiving light of the fifth isolation device is turned on, and the electric energy of the second preset power supply flows through the ninth resistor, so that the second access detection pin A2 of the control module of the other energy storage device receives a high level, so that the other energy storage device knows that the second cascade interface is connected to the cascade interface of the other energy storage device.

[0062] Therefore, the control module of the energy storage device is configured to determine whether the first cascade interface and the second cascade interface of the energy storage device are connected to other energy storage devices according to level signals received by the first access detection pin A1 and the second access detection pin A2 respectively.

[0063] Exemplarily, if n energy storage devices are connected in sequence, only the second access detection pin A2 of the first energy storage device does not receive a high level, so that the first energy storage device determines that it is located at the first position among multiple energy storage devices; the first access detection pin A1 and the second access detection pin A2 of the second energy storage device to the n-1th energy storage device all receive a high level, so that the second energy storage device to the n-1th energy storage device are located in the middle position among the multiple energy storage devices; only the first access detection pin A1 of the nth energy storage device does not receive a high level, so that the nth energy storage device determines that it is located at the last position among the multiple energy storage devices.

[0064] The first cascade interface also includes a first cascade communication contact, and the second cascade interface also includes a second cascade communication contact, wherein the second cascade communication contact is led out from the cascade communication pin of the control module, and the first cascade communication contact is led out from a preset point on the connecting line between the second cascade communication contact and the cascade communication pin of the control module, and the first cascade communication contact of the first cascade interface of one energy storage device is used to connect the second cascade communication contact of the second cascade interface of another energy storage device.

[0065] That is to say, when the first cascade interface of one energy storage device is connected to the second cascade interface of another energy storage device, the communication signal sent by the cascade communication pin of the control module of one energy storage device is sent to the cascade communication pin of the control module of another energy storage device through the first cascade communication contact of the first cascade interface of one energy storage device and the second cascade communication contact of the second cascade interface of another energy storage device. Furthermore, when multiple energy storage devices are cascaded in sequence, the cascade communication pins of the control modules of the multiple energy storage devices are connected together so that one energy storage device can send a unified communication signal.

[0066] The cascade communication pin of the control module includes a first cascade communication pin CAN0-H and a second cascade communication pin CAN0-L, the first cascade communication contact includes a first cascade communication sub-contact CAN01-H and a second cascade communication sub-contact CAN01-L, the second cascade communication contact includes a third cascade communication sub-contact CAN02-H and a fourth cascade communication sub-contact CAN02-L, wherein the third cascade communication sub-contact CAN02-H is led out from the first cascade communication pin CAN0-H of the control module, and the fourth The cascade communication sub-contact CAN02-L is led out from the second cascade communication pin CAN0-L of the control module, the first cascade communication sub-contact CAN01-H is led out from the first preset point on the connecting line between the third cascade communication sub-contact CAN02-H and the first cascade communication pin CAN0-H of the control module, and the second cascade communication sub-contact CAN01-L is led out from the second preset point on the connecting line between the fourth cascade communication sub-contact CAN02-L and the second cascade communication pin CAN0-L of the control module.

[0067] Wherein, H means transmitting a high level signal, and L means transmitting a low level signal. Exemplarily, the communication protocol used by the cascade communication pins of the control module of the present application is the CAN (Controller Area Network) communication protocol.

[0068] The energy storage device also includes a selection circuit 106, one end of which is connected to the communication resistance selection pin CAN-R of the control module, and the other end of the selection circuit is connected to the connection line between the cascade communication pin and the second cascade communication contact, wherein the selection circuit 106 includes a sixth isolation device U6, a tenth resistor R10 and an eleventh resistor R11, a first pin of the input end of the sixth isolation device is connected to one end of the tenth resistor, and the other end of the tenth resistor is connected to the communication resistance selection pin CAN-R of the control module, a second pin of the input end of the sixth isolation device is grounded GND1, a third pin of the output end of the sixth isolation device is connected to one end of the eleventh resistor, and the other end of the eleventh resistor is connected between the first cascade communication pin CAN0-H of the control module and the third cascade communication sub-contact CAN02-H, and a fourth pin of the output end of the sixth isolation device is connected between the second cascade communication pin CAN0-L of the control module and the fourth cascade communication sub-contact CAN02-L.

[0069] Exemplarily, the sixth isolation device is configured as a photocoupler, and the grounding point connected to the second pin of the input end of the sixth isolation device is the negative electrode GND1 of the battery. The first pin of the input end of the sixth isolation device is the anode of the photocoupler, the second pin of the input end of the sixth isolation device is the cathode of the photocoupler, the third pin of the output end of the sixth isolation device is the collector of the photocoupler, and the fourth pin of the output end of the sixth isolation device is the emitter of the photocoupler.

[0070] Furthermore, the control module is configured to: determine the position of the energy storage device according to the level signal received by the first access detection pin A1 and the second access detection pin A2; if it is determined that the energy storage device is located in the first position or the last position, control the communication resistor selection pin to input a high level signal, and then, the light source of the sixth isolation device is turned on to turn on the light receiving light of the sixth isolation device, so that the eleventh resistor of the selection circuit is connected between the first cascade communication pin CAN0-H and the second cascade communication pin CAN0-L; if it is determined that the energy storage device is not located in the first position or the last position, control the communication resistor selection pin to input a low level signal, so that the sixth isolation device is not turned on, and the eleventh resistor of the selection circuit is not connected between the first cascade communication pin CAN0-H and the second cascade communication pin CAN0-L.

[0071] That is to say, the cascade communication pins of multiple control modules are connected together, and it is not necessary to connect resistors between the first cascade communication pin CAN0-H and the second cascade communication pin CAN0-L of all energy storage devices to avoid consumption of excess electric energy. Only resistors are connected between the first cascade communication pin CAN0-H and the second cascade communication pin CAN0-L of the energy storage modules located at the first and last positions to reduce communication interference.

[0072] The energy storage device also includes a power supply circuit 202 and an isolation circuit 203, wherein the power supply circuit and the isolation circuit are arranged between the other end of the logic gate activation circuit and the isolation power contact of the second cascade interface, one end of the power supply circuit is connected to the other end of the logic gate activation circuit, the other end of the power supply circuit is connected to one end of the isolation circuit, and the other end of the isolation circuit is led out as the isolation power contact of the second cascade interface.

[0073] The power supply circuit is used to convert the electric energy of the battery and then provide it to the isolation circuit, and the isolation circuit is used to isolate the electric energy output by the power supply circuit to prevent interference with the electric energy provided by the battery to the outside.

[0074] The energy storage device further includes a voltage regulator LDO, one end of the voltage regulator is connected to the other end of the power supply circuit, and the other end of the voltage regulator provides a second preset power supply.

[0075] That is, the voltage regulator is used to provide a stable second preset power supply. Exemplarily, the voltage regulator is a low voltage drop linear regulator.

[0076] The energy storage device further includes a standby power circuit 204 , one end of which is connected to the battery, and the other end of which provides a second preset power source.

[0077] The standby power circuit and the voltage stabilizer can both provide a second preset power supply, and the standby power circuit is used to ensure that the second preset power supply is provided when the voltage stabilizer fails.

[0078] The first cascade interface also includes a first external communication contact, and the second cascade interface also includes a second external communication contact, wherein the first external communication contact is empty, and the second external communication contact is led out from the external communication pin of the control module and is used to connect the communication interface of an external device, and the first external communication contact of the first cascade interface of an energy storage device is used to connect the second external communication contact of the second cascade interface of another energy storage device.

[0079] The communication protocols used by the cascade communication pins and the external communication pins of the control module are not limited. For example, the communication protocol can be set to a CAN communication protocol or an RS485 communication protocol.

[0080] Specifically, the first external communication contact of the first cascade interface includes CAN11-H and CAN11-L, and the second external communication contact of the second cascade interface includes CAN12-H and CAN12-L, wherein CAN12-H is led out from CAN1-H of the external communication pin of the control module, and CAN12-L is led out from CAN1-L of the external communication pin of the control module. Furthermore, the control module of the energy storage device communicates with the external device through CAN1-H and CAN1-L of the external communication pins and CAN12-H and CAN12-L of the second external communication contact.

[0081] That is to say, when n energy storage devices are cascaded in sequence, the second cascade interface of the first energy storage device is not connected to the cascade interfaces of other energy storage devices, and then, the first external communication contact in the first cascade interface is left empty, and the second external communication contact in the second cascade interface can be connected to other external devices that need to communicate, so as to connect the communication interface of the external device with the external communication pin of the control module of the first energy storage device. The external device can be a charging device that charges the n energy storage devices or an electrical device that uses the electrical energy of the n energy storage devices, so that the first energy storage device can control the functions performed by the n energy storage devices according to the communication results with the external device.

[0082] The energy storage device further comprises a power output interface (not shown in the figure), which is led out from the battery of the energy storage device and is used for charging or discharging the energy storage device and for connecting a plurality of energy storage devices in series or in parallel.

[0083] That is to say, the positive and negative electrodes of the battery can be directly led out from the shell of the energy storage device as the power output interface of the energy storage device. The battery can be charged and discharged through the power output interface, and each energy storage device can connect the batteries of multiple energy storage devices in series or in parallel through the power output interface. Furthermore, multiple energy storage devices can be connected in series or in parallel through the power output interface according to actual usage. The first cascade interface and the second cascade interface do not affect the series connection or parallel connection between multiple energy storage devices, and pay more attention to the communication connection between energy storage devices.

[0084] The first cascade interface further includes a ground contact GND2 corresponding to a preset isolation ground, and the second cascade interface further includes a ground contact GND2 corresponding to a preset isolation ground. The preset isolation ground is led out from the isolation circuit to prevent interference with the battery.

[0085] For example, when n energy storage devices are sequentially cascaded through the cascade interface, the second cascade interface of the first energy storage device can provide the first preset power supply corresponding to the isolated power contact and the ground contact GND2, and then the power supply end of the power-consuming device can be connected to the second cascade interface of the first energy storage device to realize external power supply. At this time, the power-consuming device can be an external screen to display information such as the status of each energy storage device through the external screen.

[0086] Furthermore, an isolation circuit can be set according to the actual power demand of the external screen to output the power required by the external screen.

[0087] The present application multiplexes interface signals to reduce the number of pins in the control module of the energy storage device and the number of contacts on the cascade interface, thereby realizing complex control functions and reducing costs while ensuring the functions of the energy storage device. The cost reduction is more obvious for terminals with a high IP (Ingress Protection) protection level.

[0088] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0089] It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0090] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy storage device, characterized in that: The energy storage device comprises: A control module, the control module comprising a trigger pin for sending a trigger signal and a triggered pin for receiving the trigger signal; A trigger circuit, one end of which is connected to a trigger pin of the control module; a first cascade interface, the first cascade interface comprising a trigger contact extending from the other end of the trigger circuit; a second cascade interface, the second cascade interface comprising a triggered contact led out from a triggered pin of the control module; The first cascade interface of one energy storage device is used to connect to the second cascade interface of another energy storage device, and the triggering contact of the first cascade interface of one energy storage device is used to connect to the triggered contact of the second cascade interface of another energy storage device.

2. The energy storage device according to claim 1, characterized in that: The trigger circuit includes a first isolation device, a first resistor and a second resistor. Among them, a first pin of the input end of the first isolation device is connected to one end of the first resistor, the other end of the first resistor is connected to the trigger pin of the control module, the second pin of the input end of the first isolation device is grounded, the third pin of the output end of the first isolation device is connected to one end of the second resistor, the other end of the second resistor is connected to a first preset power supply, and the fourth pin of the output end of the first isolation device serves as the trigger contact of the first cascade interface.

3. The energy storage device according to claim 1, characterized in that: The energy storage device further includes a triggered circuit, which is arranged between the triggered pin of the control module and the triggered contact of the second cascade interface, and includes a second isolation device, a third resistor and a fourth resistor. Among them, the first pin of the input end of the second isolation device is connected to one end of the third resistor, the other end of the third resistor is led out as the triggered contact of the second cascade interface, the second pin of the input end of the second isolation device is grounded, the third pin of the output end of the second isolation device is connected to the second preset power supply, the fourth pin of the output end of the second isolation device is respectively connected to one end of the fourth resistor and the triggered pin of the control module, and the other end of the fourth resistor is grounded.

4. The energy storage device according to claim 1, characterized in that: The energy storage device also includes: Battery; a logic gate activation circuit, one end of the logic gate activation circuit is connected to the battery, the other end of the logic gate activation circuit leads to an isolated power contact as the second cascade interface, the isolated power contact provides a first preset power supply, The receiving end of the logic gate activation circuit includes a first receiving end, and the first receiving end leads out a locking contact as the second cascade interface.

5. The energy storage device according to claim 4, characterized in that: The energy storage device further includes a button, and the receiving end of the logic gate activation circuit further includes a second receiving end and a third receiving end, the second receiving end is connected to the trigger pin of the control module, and the third receiving end is used to receive the activation signal sent when the button is pressed; Wherein, the logic gate activation circuit is configured to: when a preset level signal is received at any receiving end of the logic gate activation circuit, control the power of the battery to be transmitted to the isolated power contact of the second cascade interface.

6. The energy storage device according to claim 5, characterized in that: The energy storage device further includes a locking circuit, which is arranged between the first receiving end and the locking contact of the second cascade interface, and the first cascade interface further includes a nulling contact, and the nulling contact of the first cascade interface of one energy storage device is used to connect the locking contact of the second cascade interface of another energy storage device; The locking circuit includes a third isolation device and a fifth resistor, a first pin of the input end of the third isolation device is connected to the locking contact of the second cascade interface, a second pin of the input end of the third isolation device is connected to one end of the fifth resistor, the other end of the fifth resistor is grounded, a third pin of the output end of the third isolation device is connected to the first receiving end, and a fourth pin of the output end of the third isolation device is grounded.

7. The energy storage device according to claim 6, characterized in that: The first cascade interface also includes an access detection contact, which is connected to the empty contact. The access detection contact of the first cascade interface of one energy storage device is used to connect to the isolated power contact of the second cascade interface of another energy storage device.

8. The energy storage device according to claim 7, characterized in that: The energy storage device also includes: a first access detection circuit, wherein one end of the first access detection circuit is connected to an access detection contact of the first cascade interface, and the other end of the first access detection circuit is connected to a first access detection pin of the control module; A second access detection circuit, wherein one end of the second access detection circuit is connected to the locking contact of the second cascade interface, and the other end of the second access detection circuit is connected to the second access detection pin of the control module.

9. The energy storage device according to claim 8, characterized in that: The first access detection circuit includes a fourth isolation device, a sixth resistor and a seventh resistor, wherein a first pin of an input end of the fourth isolation device is connected to an access detection contact of the first cascade interface, a second pin of an input end of the fourth isolation device is connected to one end of the sixth resistor, the other end of the sixth resistor is grounded, a third pin of an output end of the fourth isolation device is connected to a second preset power supply, a fourth pin of an output end of the fourth isolation device is connected to a first access detection pin of the control module and one end of the seventh resistor, respectively, and the other end of the seventh resistor is grounded; The second access detection circuit includes a fifth isolation device, an eighth resistor and a ninth resistor, wherein a first pin of the input end of the fifth isolation device is connected to the locking contact of the second cascade interface, a second pin of the input end of the fifth isolation device is connected to one end of the eighth resistor, the other end of the eighth resistor is grounded, a third pin of the output end of the fifth isolation device is connected to a second preset power supply, a fourth pin of the output end of the fifth isolation device is connected to the second access detection pin of the control module and one end of the ninth resistor respectively, and the other end of the ninth resistor is grounded.

10. The energy storage device according to claim 8, characterized in that: The first cascade interface further includes a first cascade communication contact, and the second cascade interface further includes a second cascade communication contact. Among them, the second cascade communication contact is led out from the cascade communication pin of the control module, the first cascade communication contact is led out from a preset point on the connecting line between the second cascade communication contact and the cascade communication pin of the control module, and the first cascade communication contact of the first cascade interface of one energy storage device is used to connect the second cascade communication contact of the second cascade interface of another energy storage device.

11. The energy storage device according to claim 10, characterized in that: The cascade communication pin of the control module includes a first cascade communication pin and a second cascade communication pin, the first cascade communication contact includes a first cascade communication sub-contact and a second cascade communication sub-contact, the second cascade communication contact includes a third cascade communication sub-contact and a fourth cascade communication sub-contact, Among them, the third cascade communication sub-contact is led out from the first cascade communication pin of the control module, the fourth cascade communication sub-contact is led out from the second cascade communication pin of the control module, the first cascade communication sub-contact is led out from the first preset point on the connecting line between the third cascade communication sub-contact and the first cascade communication pin of the control module, and the second cascade communication sub-contact is led out from the second preset point on the connecting line between the fourth cascade communication sub-contact and the second cascade communication pin of the control module.

12. The energy storage device according to claim 11, characterized in that: The energy storage device further includes a selection circuit, one end of which is connected to the communication resistance selection pin of the control module, and the other end of which is connected to the connection line between the cascade communication pin and the second cascade communication contact. Among them, the selection circuit includes a sixth isolation device, a tenth resistor and an eleventh resistor, a first pin of the input end of the sixth isolation device is connected to one end of the tenth resistor, the other end of the tenth resistor is connected to the communication resistor selection pin of the control module, the second pin of the input end of the sixth isolation device is grounded, the third pin of the output end of the sixth isolation device is connected to one end of the eleventh resistor, the other end of the eleventh resistor is connected between the first cascade communication pin of the control module and the third cascade communication sub-contact, and the fourth pin of the output end of the sixth isolation device is connected between the second cascade communication pin of the control module and the fourth cascade communication sub-contact.

13. The energy storage device according to claim 4, characterized in that: The energy storage device further includes a power supply circuit and an isolation circuit, wherein the power supply circuit and the isolation circuit are arranged between the other end of the logic gate activation circuit and the isolation power contact of the second cascade interface, one end of the power supply circuit is connected to the other end of the logic gate activation circuit, the other end of the power supply circuit is connected to one end of the isolation circuit, and the other end of the isolation circuit leads to the isolation power contact of the second cascade interface; And / or, the energy storage device further includes a standby power circuit, one end of the standby power circuit is connected to the battery, and the other end of the standby power circuit provides a second preset power supply.

14. The energy storage device according to claim 13, characterized in that: The energy storage device further includes a voltage stabilizer, one end of the voltage stabilizer is connected to the other end of the power supply circuit, and the other end of the voltage stabilizer provides a second preset power supply.

15. The energy storage device according to claim 1, characterized in that: The first cascade interface further includes a first external communication contact, and the second cascade interface further includes a second external communication contact, the first external communication contact is empty, and the second external communication contact is led out from the external communication pin of the control module and is used to connect to the communication interface of an external device, and the first external communication contact of the first cascade interface of one energy storage device is used to connect to the second external communication contact of the second cascade interface of another energy storage device; And / or, the energy storage device further comprises a power output interface, the power output interface is derived from a battery of the energy storage device, and is used for charging or discharging the energy storage device and for connecting a plurality of energy storage devices in series or in parallel.

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