Power-on self-starting circuit, lithium battery module, lithium battery cabinet and uninterruptible power supply

Abstract

The utility model relates to the technical field of power supplies, in particular to a power-on self-starting circuit, a lithium battery module, a lithium battery cabinet and an uninterruptible power supply, the power-on self-starting circuit is applied to the lithium battery module provided with an auxiliary power supply and an external connecting end, and the external connecting end is used for outputting electric energy to the outside or obtaining electric energy from the outside. The circuit comprises a power-on signal maintaining module and an incoming call triggering module, the input end of the incoming call triggering module is electrically connected with the external connecting end; when an incoming call signal is input to the external connection end, the output end of the incoming call trigger module outputs a trigger signal; when the auxiliary power supply is excited by the trigger signal to start and output, the input end of the startup signal maintaining module receives the output of the auxiliary power supply and generates a maintaining signal enabling the auxiliary power supply to maintain the output. According to the utility model, the signal for driving the auxiliary power supply to work is generated through the optocoupler isolation and the capacitor connected with the DC bus, so that the auxiliary power supply is automatically started when the DC bus is powered on.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to a call self-starting circuit, a lithium battery module, a lithium battery cabinet and an uninterruptible power supply. Background Art

[0002] UPS (Uninterruptible Power Supply) is a system device that connects the battery to the host and converts DC power into AC power through the host inverter and other module circuits. The three basic functions of UPS are: voltage stabilization, filtering, and uninterruptibility. When the AC input is normal, the UPS stabilizes the AC power and supplies it to the load. At this time, the UPS is an AC voltage stabilizer, and it also charges the battery; once the AC input of the AC power is abnormal, such as overvoltage, undervoltage, power outage, and abnormal frequency, the UPS will immediately use the DC power of the battery to continue to supply 220V AC power to the load through the inverter switching conversion method, so that the load maintains normal operation and protects the load software and hardware from damage. The length of the power supply time depends on the battery capacity of the UPS and the power consumption of the load equipment.

[0003] It can be seen that lithium batteries play a critical role in UPS. On the other hand, in order to make lithium batteries easy to maintain, some related technologies modularize lithium batteries and set power supply, control circuit and output circuit for each lithium battery module. The disadvantage brought by this is that when some lithium batteries stop working due to failure or lack of power, how to automatically resume work is a problem that the staff in this field have to face.

[0004] Based on this, it is necessary to develop and design a self-starting circuit for incoming calls, a lithium battery module, a lithium battery cabinet and an uninterruptible power supply. Summary of the invention

[0005] The utility model provides a call self-starting circuit, a lithium battery module, a lithium battery cabinet and an uninterruptible power supply, which are used to solve the problem of automatic recovery of lithium battery modules in the prior art.

[0006] In the first aspect, the embodiment of the utility model provides a call self-starting circuit, which is applied to a lithium battery module, wherein the lithium battery module is provided with an auxiliary power supply and an external connection terminal, wherein the external connection terminal is used to output electric energy to the outside or obtain electric energy from the outside, and the call self-starting circuit comprises: a power-on signal maintaining module and a call triggering module;

[0007] The input end of the incoming call trigger module is electrically connected to the external connection end;

[0008] When an incoming call signal is input to the external connection terminal, the output terminal of the incoming call trigger module outputs a trigger signal;

[0009] When the auxiliary power supply is activated and outputs power by the trigger signal, the input end of the power-on signal maintaining module receives the output of the auxiliary power supply and generates a maintaining signal for maintaining the output of the auxiliary power supply.

[0010] In a possible implementation, the incoming call trigger module includes: a fifth resistor, a third capacitor, and an optical coupler, wherein the fifth resistor, the third capacitor, and an input side of the optical coupler are connected in series;

[0011] The first output end of the optical coupler is grounded, and the second output end of the optical coupler serves as the output end of the incoming call trigger module.

[0012] In a possible implementation, the power-on signal maintaining module includes: a third resistor, a fourth resistor and a second transistor;

[0013] The first end of the third resistor is electrically connected to the output end of the auxiliary power supply, the second end of the third resistor and the first end of the fourth resistor are electrically connected to the base of the second transistor, the second end of the fourth resistor and the emitter of the second transistor are grounded, and the collector of the second transistor serves as the output end of the power-on signal maintenance module.

[0014] In one possible implementation, the incoming call self-starting circuit includes a first power-on trigger module, and the first power-on trigger module includes: a first resistor, a second resistor, a first capacitor and a first transistor, the second end of the first resistor, the first end of the second resistor and the first end of the first capacitor are electrically connected, the base of the first transistor is electrically connected to the second end of the first capacitor, the emitter of the first transistor and the second end of the second resistor are grounded, and the collector of the second transistor is electrically connected to the collector of the first transistor.

[0015] In a possible implementation, the incoming call self-starting circuit further includes a first shutdown trigger module: the first shutdown trigger module includes a sixth resistor, and the second end of the sixth resistor is electrically connected to the second end of the third resistor;

[0016] When the first end of the sixth resistor is used as the input end of the first shutdown trigger module, when a low level signal is input to the input end, the second transistor is turned off.

[0017] In a possible implementation, the incoming call self-starting circuit further includes a second shutdown trigger module, the second shutdown trigger module includes a voltage monitor and a seventh resistor, the voltage monitor is provided with a power input terminal, a reset terminal and a ground terminal, when the voltage of the power input terminal of the voltage monitor is lower than the voltage threshold, the reset terminal of the voltage monitor outputs a low level, when the voltage of the power input terminal of the voltage monitor is higher than the voltage threshold, the reset terminal of the voltage monitor outputs a high level;

[0018] The reset terminal of the voltage monitor is electrically connected to the first terminal of the seventh resistor, the second terminal of the seventh resistor is electrically connected to the second terminal of the third resistor, and the ground terminal of the voltage monitor is grounded.

[0019] In a second aspect, the present utility model provides a lithium battery module, including: a lithium battery body, a DC conversion unit, an auxiliary power supply and a control unit;

[0020] The lithium battery body is electrically connected to the first end of the DC conversion unit, the second end of the DC conversion unit serves as the external connection end, the control unit controls the current output to the outside or the current input from the outside by controlling the DC conversion unit, and the auxiliary power supply supplies power to the control unit;

[0021] The control unit is provided with an incoming call self-starting circuit as described in any one of the first aspects, and when an incoming call signal is input to the incoming call trigger module input end of the incoming call self-starting circuit, the incoming call self-starting circuit excites and maintains the startup of the auxiliary power supply.

[0022] In a possible implementation, the DC conversion unit includes: a DC buck-boost unit and a resonant converter, the lithium battery body is electrically connected to a first end of the DC buck-boost unit, the second end of the DC buck-boost unit is electrically connected to a first end of the resonant converter, and the second end of the resonant converter serves as the external connection end;

[0023] The auxiliary power supply has two power input terminals, and the two power input terminals of the auxiliary power supply are electrically connected to the output terminal of the lithium battery body and the second terminal of the DC buck-boost unit respectively.

[0024] In a third aspect, the present utility model embodiment provides a lithium battery cabinet, comprising: a plurality of lithium battery modules as described in any one of the second aspects, and the external connection ends of each lithium battery module are connected in parallel as the access end of the lithium battery cabinet, and also includes: an emergency shutdown interface, the emergency shutdown interface is electrically connected to the input end of the first shutdown trigger module of the plurality of lithium battery modules;

[0025] When the plurality of lithium battery modules receive a signal from the emergency shutdown interface, they output a signal that shuts down the auxiliary power supply.

[0026] In a fourth aspect, an embodiment of the utility model provides an uninterruptible power supply, which is provided with a lithium battery cabinet as described in the third aspect, and the battery terminal of the uninterruptible power supply is electrically connected to the access terminal.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The utility model discloses a call self-starting circuit, which receives an externally connected call signal through a call trigger module, so that the auxiliary power supply of the lithium battery module automatically starts when a call is received by the DC bus, and maintains the module through a power-on signal so that the auxiliary power supply continues to work smoothly. Due to the timely response of the call self-starting circuit to the call signal, the lithium battery module can resume work in time after exiting work when the conditions are met, thereby ensuring the backup power capacity of the UPS. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 It is a functional block diagram of an uninterruptible power supply provided by an embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of a circuit for automatically starting a phone call provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0032] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, and methods are omitted to avoid obstructing the description of the present invention with unnecessary details.

[0033] In order to make the purpose, technical solutions and advantages of the utility model clearer, the following will be described through specific implementation methods in conjunction with the accompanying drawings.

[0034] The following is a detailed description of an embodiment of the present invention. This example is implemented based on the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0035] Figure 1 The uninterruptible power supply functional block diagram provided by the embodiment of the utility model is as follows: Figure 2 This is a schematic diagram of a self-starting circuit for incoming calls provided by an embodiment of the utility model.

[0036] like Figure 2 As shown, it shows the principle diagram of the incoming call self-starting circuit provided by the embodiment of the utility model, which is described in detail as follows:

[0037] In the first aspect, the embodiment of the utility model provides a call self-starting circuit, which is applied to a lithium battery module, wherein the lithium battery module is provided with an auxiliary power supply and an external connection terminal, wherein the external connection terminal is used to output electric energy to the outside or obtain electric energy from the outside, and the call self-starting circuit comprises: a power-on signal maintaining module and a call triggering module;

[0038] The input end of the incoming call trigger module is electrically connected to the external connection end;

[0039] When an incoming call signal is input to the external connection terminal, the output terminal of the incoming call trigger module outputs a trigger signal;

[0040] When the auxiliary power supply is activated and outputs power by the trigger signal, the input end of the power-on signal maintaining module receives the output of the auxiliary power supply and generates a maintaining signal for maintaining the output of the auxiliary power supply.

[0041] For example, Figure 1 As shown, the lithium battery is used to output power to provide stable AC power to the load when the mains voltage on the UPS input side is unstable or power is off. In some application scenarios, the UPS includes an AC / DC module and a DC / AC module. The AC / DC output end is connected to the DC bus (DC BUS) through a DC circuit breaker. When the mains voltage is unstable or power is off, the lithium battery supplies power to the load through the DC bus and the DC / AC module. When the mains power is on, the lithium battery is charged through the AC / DC module and the DC bus.

[0042] In the application scenario of the embodiment of the utility model, in addition to the lithium battery body, the lithium battery module is also provided with a Buck / Boost module and an LLC module. The lithium battery body is connected to the DC bus through the above modules, outputs current to the DC bus, or receives current from the DC bus to charge the lithium battery body. The output current or input current of the Buck / Boost module and the LLC module is controlled by the control unit. At the same time, an auxiliary power supply is also provided inside the lithium battery module to power the control unit. As mentioned above, in some application scenarios, in order to reduce energy consumption, or in some emergency situations or when the lithium battery is under low voltage protection, the lithium battery module will shut down and stop working. Therefore, the incoming call self-starting circuit provided by the embodiment of the utility model is provided inside the control unit. One of the functions of this module is that when the DC bus changes from a power outage state to an incoming call state under the condition that there is no emergency, the auxiliary power supply can be automatically started, so that the control unit starts, and further drives the Buck / Boost module and the LLC module to work, so that the lithium battery body is connected to the DC bus, provides current to the DC bus or receives current from the DC bus, and charges the lithium battery body.

[0043] In order to achieve the above-mentioned purpose, the incoming call self-starting circuit of the embodiment of the utility model is provided with an incoming call trigger module and a power-on signal maintaining module, and the output ends of these two modules are connected to the starting control end of the auxiliary power supply, wherein, when there is voltage on the DC bus or when there is a voltage change from no voltage to voltage, the incoming call trigger module generates an excitation to start the auxiliary power supply, and when there is voltage on the DC bus, the power-on signal maintaining module always generates a signal to make the auxiliary power supply work.

[0044] In the implementation of the incoming call trigger module and the power-on signal maintaining module, the implementation mode of the utility model is discussed in detail from the following parts.

[0045] In some implementations, the incoming call trigger module includes: a fifth resistor, a third capacitor, and an optical coupler, wherein the fifth resistor, the third capacitor, and an input side of the optical coupler are connected in series;

[0046] The first output end of the optical coupler is grounded, and the second output end of the optical coupler serves as the output end of the incoming call trigger module.

[0047] In some embodiments, the power-on signal maintaining module includes: a third resistor, a fourth resistor, and a second transistor;

[0048] The first end of the third resistor is electrically connected to the output end of the auxiliary power supply, the second end of the third resistor and the first end of the fourth resistor are electrically connected to the base of the second transistor, the second end of the fourth resistor and the emitter of the second transistor are grounded, and the collector of the second transistor serves as the output end of the power-on signal maintenance module.

[0049] For example, Figure 2 As shown, in the embodiment of the utility model, the power-on signal maintaining module includes: a third resistor R3, a fourth resistor R4 and a second transistor Q2, and the incoming call triggering module includes: a fifth resistor R5, a third capacitor C3 and an optical coupler T1.

[0050] The working process of the incoming call self-starting circuit, taking the incoming call of the city power as an example, at this time, since the UPS is powered on, its DC bus also changes from a power-off state to an incoming call state. When the DC bus is powered on, when the voltage of the DC bus (V_auto+ and V_auto- are the two access terminals of the DC bus) rises, it will charge the capacitor C3 through R5, and the charging current brought makes the input side of the optocoupler T1 work, and couples the signal light to the output side, so that the auxiliary power supply and the control unit on the output side start, and further drive the above-mentioned Buck / Boost module and LLC module to work. The input of the auxiliary power supply includes two terminals, which are the output terminal of the lithium battery body and the output terminal of the Buck / Boost module. Since the charging process for the capacitor C3 is short, the embodiment of the utility model is also provided with a power-on signal maintenance module, and the left end of the third resistor R3 of the power-on signal maintenance module is connected to the 3.3V of the output terminal of the auxiliary power supply. When the auxiliary power supply is started, the terminal generates a voltage of 3.3V, so that the second transistor Q2 is saturated and turned on, and the conditions for the auxiliary power supply to continue to work are generated.

[0051] The embodiment of the utility model generates a signal to drive the auxiliary power supply to work through optical coupling isolation and a capacitor connected to the DC bus, so that the auxiliary power supply automatically starts when the DC bus is powered, and the auxiliary power supply continues to work smoothly through the power-on signal maintenance module. When the lithium battery body does not need to input or output electric energy, the first shutdown trigger module or the second shutdown trigger module can be operated to generate a shutdown signal to stop the lithium battery module, reduce unnecessary power consumption, and reduce the aging of various components.

[0052] In some embodiments, the incoming call self-start circuit includes a first power-on trigger module, and the first power-on trigger module includes: a first resistor, a second resistor, a first capacitor and a first transistor, the second end of the first resistor, the first end of the second resistor and the first end of the first capacitor are electrically connected, the base of the first transistor is electrically connected to the second end of the first capacitor, the emitter of the first transistor and the second end of the second resistor are grounded, and the collector of the second transistor is electrically connected to the collector of the first transistor.

[0053] For example, Figure 2As shown, the first power-on trigger module includes: a first resistor R1, a second resistor R2, a first capacitor C1 and a first transistor Q1, and the power-on signal maintaining module also includes: a sixth resistor R6.

[0054] The first power-on trigger module can be used to Figure 1 The knob shown is connected to a power source (which can be an external power source, or the output end of the lithium battery body, or the output end of the lithium battery body after electrical conversion). When the knob is turned, the external power source charges the first capacitor C1 through the first resistor R1, and makes the first transistor Q1 saturated and turned on. Similarly, since the charging process of the first capacitor C1 is instantaneous, after the excitation that starts the auxiliary power supply is generated, the power-on signal maintenance module starts to work so that the auxiliary power supply continues to work.

[0055] It should be noted that the knob also has a mechanical and electrical linkage interlocking function. The auxiliary power supply can only work when the knob is in the closed state (indicating that the mechanical connection between the lithium battery module and the cabinet is in place and there is no safety hazard). In other words, no matter whether it is the first power-on trigger signal, the second power-on trigger signal or the incoming call trigger module, the prerequisite for any trigger signal to stimulate the auxiliary power supply to work is that the knob must be in the closed state.

[0056] In some embodiments, the incoming call self-starting circuit further includes a first shutdown trigger module: the first shutdown trigger module includes a sixth resistor, and the second end of the sixth resistor is electrically connected to the second end of the third resistor;

[0057] When the first end of the sixth resistor is used as the input end of the first shutdown trigger module, when a low level signal is input to the input end, the second transistor is turned off.

[0058] When the auxiliary power supply needs to be stopped, the left end of the sixth resistor R6 is connected to a low level, which causes the second transistor Q2 to be turned off, the signal to maintain the auxiliary power supply working disappears, and the auxiliary power supply stops outputting.

[0059] In some application scenarios, the sixth resistor R6 is connected to the emergency shutdown interface. When the emergency shutdown interface generates a low level, the auxiliary power supply stops outputting, thereby isolating the lithium battery body from the DC bus.

[0060] In some embodiments, the incoming call self-starting circuit further includes a second shutdown trigger module, the second shutdown trigger module includes a voltage monitor and a seventh resistor, the voltage monitor is provided with a power input terminal, a reset terminal and a ground terminal, when the voltage of the power input terminal of the voltage monitor is lower than the voltage threshold, the reset terminal of the voltage monitor outputs a low level, when the voltage of the power input terminal of the voltage monitor is higher than the voltage threshold, the reset terminal of the voltage monitor outputs a high level;

[0061] The reset terminal of the voltage monitor is electrically connected to the first terminal of the seventh resistor, the second terminal of the seventh resistor is electrically connected to the second terminal of the third resistor, and the ground terminal of the voltage monitor is grounded.

[0062] For example, Figure 2 As shown, the incoming call self-starting circuit also includes a voltage monitor TLV809K and a seventh resistor R7, and the second power-on trigger circuit includes: an eighth resistor R8, a ninth resistor R9, a fourth capacitor C4 and a third transistor Q3.

[0063] The VCC terminal of the voltage monitor TLV809K is connected to the processor's instructions, such as Figure 1 When the BMS or control unit dsp gives a shutdown indication (low level is valid, such as generating a shutdown indication when the lithium battery module needs to be shut down for protection), the second transistor Q2 is turned off and the auxiliary power supply stops outputting.

[0064] In some implementations, the incoming call self-starting circuit further includes: a second power-on triggering circuit;

[0065] The second power-on trigger circuit comprises: an eighth resistor, a ninth resistor, a fourth capacitor and a third triode, the first end of the ninth resistor is electrically connected to the first end of the fourth capacitor, the second end of the fourth capacitor is electrically connected to the base of the third triode, the emitter of the third triode and the second end of the ninth resistor are grounded, and the collector of the third triode is electrically connected to the collector of the first triode;

[0066] When the second end of the eighth resistor is electrically connected to the first end of the dry node, the second end of the dry node is electrically connected to the first end of the ninth resistor, and the first end of the eighth resistor is at a high level and closed at both ends of the dry node, the collector of the third transistor generates a third pulse signal.

[0067] In addition, in some application scenarios, external instructions are also accepted for startup. For example, the dry contact indication output of the UPS, at this time, the dry node is connected to the second end of the eighth resistor R8 and the first end of the fourth capacitor C4 (Start+ and Start-), and the first end of R8 is connected to the power supply. At this time, when the dry node is closed, a charging current flows through the capacitor C4, so that the third transistor Q3 is saturated and turned on, and the auxiliary power supply is started.

[0068] In a second aspect, the present utility model provides a lithium battery module, including:

[0069] Lithium battery body, DC conversion unit, auxiliary power supply and control unit;

[0070] The lithium battery body is electrically connected to the first end of the DC conversion unit, the second end of the DC conversion unit serves as the external connection end, the control unit controls the current output to the outside or the current input from the outside by controlling the DC conversion unit, and the auxiliary power supply supplies power to the control unit;

[0071] The control unit is provided with an incoming call self-starting circuit as described in any one of the first aspects, and when an incoming call signal is input to the incoming call trigger module input end of the incoming call self-starting circuit, the incoming call self-starting circuit excites and maintains the startup of the auxiliary power supply.

[0072] In some embodiments, the DC conversion unit includes: a DC buck-boost unit and a resonant converter, the lithium battery body is electrically connected to the first end of the DC buck-boost unit, the second end of the DC buck-boost unit is electrically connected to the first end of the resonant converter, and the second end of the resonant converter serves as the external connection end;

[0073] The auxiliary power supply has two power input terminals, and the two power input terminals of the auxiliary power supply are electrically connected to the output terminal of the lithium battery body and the second terminal of the DC buck-boost unit respectively.

[0074] For example, in some lithium battery modules, a lithium battery body, a DC conversion unit composed of a DC buck-boost unit and a resonant converter (BUCK / Boost and LLC), an auxiliary power supply and a control unit are included. As mentioned above, the control unit controls the DC buck-boost unit and the resonant converter to output current to the DC bus or receive current from the DC bus. When the auxiliary power supply starts, the control unit starts up, and a self-starting circuit is provided inside the control unit. When the conditions described in the first aspect are met, the auxiliary power supply starts. The auxiliary power supply has two power input terminals, which correspond to the output terminals of the lithium battery body and the BUCK / Boost, respectively.

[0075] In a third aspect, the present utility model embodiment provides a lithium battery cabinet, comprising: a plurality of lithium battery modules as described in any one of the second aspects, and the external connection ends of each lithium battery module are connected in parallel as the access end of the lithium battery cabinet, and also includes: an emergency shutdown interface, the emergency shutdown interface is electrically connected to the input end of the first shutdown trigger module of the plurality of lithium battery modules;

[0076] When the plurality of lithium battery modules receive a signal from the emergency shutdown interface, they output a signal that shuts down the auxiliary power supply.

[0077] In a fourth aspect, an embodiment of the utility model provides an uninterruptible power supply, which is provided with a lithium battery cabinet as described in the third aspect, and the battery terminal of the uninterruptible power supply is electrically connected to the access terminal.

[0078] For example, the present invention also provides a lithium battery cabinet, such as Figure 1 As shown in the figure, the lithium battery cabinet is equipped with a battery management system (BMS) to manage multiple lithium battery modules. The processor of the BMS is connected to the signal of the incoming call self-start, and the auxiliary power supply can be shut down through the incoming call self-start circuit. In addition, it is also equipped with an emergency shutdown interface. When this interface receives a shutdown instruction, the signal drives the incoming call self-start circuit to generate a shutdown signal, so that the auxiliary power supply stops outputting.

[0079] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the implementation method can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method implementation method, which will not be repeated here.

[0080] In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0082] In the embodiments provided by the present utility model, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device implementation described above is only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0083] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0084] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A self-starting circuit for incoming calls, characterized in that: Applied to a lithium battery module, the lithium battery module is provided with an auxiliary power supply and an external connection terminal, the external connection terminal is used to output electric energy to the outside or obtain electric energy from the outside, the incoming call self-starting circuit includes: a power-on signal maintaining module and an incoming call triggering module; The input end of the incoming call trigger module is electrically connected to the external connection end; When an incoming call signal is input to the external connection terminal, the output terminal of the incoming call trigger module outputs a trigger signal; When the auxiliary power supply is activated and outputs power by the trigger signal, the input end of the power-on signal maintaining module receives the output of the auxiliary power supply and generates a maintaining signal for maintaining the output of the auxiliary power supply.

2. The incoming call self-starting circuit according to claim 1, characterized in that: The incoming call trigger module comprises: a fifth resistor, a third capacitor and an optical coupler, wherein the fifth resistor, the third capacitor and the input side of the optical coupler are connected in series; The first output end of the optical coupler is grounded, and the second output end of the optical coupler serves as the output end of the incoming call trigger module.

3. The incoming call self-starting circuit according to claim 1, characterized in that: The power-on signal maintaining module comprises: a third resistor, a fourth resistor and a second transistor; The first end of the third resistor is electrically connected to the output end of the auxiliary power supply, the second end of the third resistor and the first end of the fourth resistor are electrically connected to the base of the second transistor, the second end of the fourth resistor and the emitter of the second transistor are grounded, and the collector of the second transistor serves as the output end of the power-on signal maintenance module.

4. The incoming call self-starting circuit according to claim 3, characterized in that: The incoming call self-starting circuit includes a first power-on trigger module, which includes: a first resistor, a second resistor, a first capacitor and a first transistor, the second end of the first resistor, the first end of the second resistor and the first end of the first capacitor are electrically connected, the base of the first transistor is electrically connected to the second end of the first capacitor, the emitter of the first transistor and the second end of the second resistor are grounded, and the collector of the second transistor is electrically connected to the collector of the first transistor.

5. The incoming call self-starting circuit according to claim 3, characterized in that: It also includes a first shutdown trigger module: the first shutdown trigger module includes a sixth resistor, and the second end of the sixth resistor is electrically connected to the second end of the third resistor; When the first end of the sixth resistor is used as the input end of the first shutdown trigger module, when a low level signal is input to the input end, the second transistor is turned off.

6. The incoming call self-starting circuit according to claim 4, characterized in that: The incoming call self-starting circuit also includes a second shutdown trigger module, which includes a voltage monitor and a seventh resistor, wherein the voltage monitor is provided with a power input terminal, a reset terminal and a ground terminal, and when the voltage at the power input terminal of the voltage monitor is lower than the voltage threshold, the reset terminal of the voltage monitor outputs a low level, and when the voltage at the power input terminal of the voltage monitor is higher than the voltage threshold, the reset terminal of the voltage monitor outputs a high level; The reset terminal of the voltage monitor is electrically connected to the first terminal of the seventh resistor, the second terminal of the seventh resistor is electrically connected to the second terminal of the third resistor, and the ground terminal of the voltage monitor is grounded.

7. A lithium battery module, characterized in that: include: Lithium battery body, DC conversion unit, auxiliary power supply and control unit; The lithium battery body is electrically connected to the first end of the DC conversion unit, the second end of the DC conversion unit serves as the external connection end, the control unit controls the current output to the outside or the current input from the outside by controlling the DC conversion unit, and the auxiliary power supply supplies power to the control unit; The control unit is provided with an incoming call self-starting circuit as described in any one of claims 1-6. When an incoming call signal is input to the incoming call trigger module input end of the incoming call self-starting circuit, the incoming call self-starting circuit excites and maintains the auxiliary power supply startup.

8. The lithium battery module according to claim 7, characterized in that: The DC conversion unit includes: a DC buck-boost unit and a resonant converter, the lithium battery body is electrically connected to a first end of the DC buck-boost unit, the second end of the DC buck-boost unit is electrically connected to a first end of the resonant converter, and the second end of the resonant converter serves as the external connection end; The auxiliary power supply has two power input terminals, and the two power input terminals of the auxiliary power supply are electrically connected to the output terminal of the lithium battery body and the second terminal of the DC buck-boost unit respectively.

9. A lithium battery cabinet, characterized in that: include: A plurality of lithium battery modules as described in any one of claims 7-8, and the external connection ends of each lithium battery module are connected in parallel as the access end of the lithium battery cabinet, and further comprising: an emergency shutdown interface, the emergency shutdown interface is electrically connected to the input end of the first shutdown trigger module of the plurality of lithium battery modules; When the plurality of lithium battery modules receive a signal from the emergency shutdown interface, they output a signal that shuts down the auxiliary power supply.

10. An uninterruptible power supply, characterized in that: It includes the lithium battery cabinet as described in claim 9, and the battery terminal of the uninterruptible power supply is electrically connected to the access terminal.

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