Activation lock control circuit and battery system

Abstract

The invention provides an activation locking control circuit and a battery system, the battery system comprises a power battery, an activation locking control circuit and a battery protection board which are connected in sequence, and whether the battery protection board works or not is controlled through the activation locking control circuit. Therefore, the energy consumption of the battery can be avoided in the links of storage, transportation, power shortage and the like.

Description

Technical Field

[0001] This invention relates to the field of power battery technology, and in particular to an activation lock control circuit and battery system. Background Technology

[0002] Currently, all power sources for new energy vehicles, energy storage, and power supplies come from batteries, which provide power to various electrical devices. Typically, batteries require a battery protection board to manage charging, discharging, overvoltage, undervoltage, and temperature conditions. Because of this protection board, battery energy is consumed during storage, transportation, and periods of low charge. Therefore, it is necessary to reduce energy consumption during these processes. Summary of the Invention

[0003] The purpose of this invention is to provide an activation lock control circuit and a battery system to solve the problem of battery energy consumption in various stages such as warehousing, transportation, and power depletion in the prior art.

[0004] To address the aforementioned technical problems, the present invention provides an activation lock control circuit, comprising: a power supply, a power supply control circuit connected to the power supply, and an unlocking circuit connected to the power supply control circuit; wherein...

[0005] The unlocking circuit outputs a first level signal or a second level signal to control the power supply control circuit to be turned on or off, wherein the level of the first level signal is higher than the level of the second level signal;

[0006] When the power supply control circuit is turned on, the power supply provides the power voltage; when the power supply control circuit is turned off, the power supply does not provide power.

[0007] Optionally, in the activation lock control circuit, the unlocking circuit includes a first activation circuit and a maintenance lock circuit; wherein,

[0008] The first start-up circuit is connected to the power supply control circuit. The first start-up circuit receives the power battery signal and outputs the first level signal when it is powered on for the first time.

[0009] The locking circuit is connected to the power supply control circuit. The locking circuit receives the locking signal and outputs the second level signal.

[0010] Optionally, in the activation lock control circuit, the unlocking circuit further includes a second start circuit; wherein,

[0011] The second start-up circuit is connected to the power supply control circuit. The second start-up circuit receives the power battery signal and the activation signal and outputs the first level signal.

[0012] Optionally, in the activation lock control circuit, the lock circuit receives the output signal from the power supply and outputs the first level signal when the power supply provides the power voltage.

[0013] Optionally, in the activation lock control circuit, the power supply control circuit includes: a first switch and a second switch connected in series; a first terminal of the first switch receives a signal from the power battery, a second terminal of the first switch is connected to the first terminal of the second switch, and a third terminal of the first switch is connected to the output terminal of the power supply control circuit; a second terminal of the second switch receives an output signal from the unlocking circuit, and a third terminal of the second switch is grounded.

[0014] Optionally, in the activation lock control circuit, the power supply control circuit further includes: a first resistor, a second resistor, a third resistor, a fourth resistor, and a first diode; the first resistor and the first diode are connected in parallel with the first switching transistor, and the cathode of the first diode receives the power battery signal; the second resistor is connected in series between the first switching transistor and the second switching transistor; the third resistor is connected to the second terminal of the second switching transistor; the fourth resistor is connected to the second terminal of the second switching transistor and the third terminal of the second switching transistor.

[0015] Optionally, in the activation lock control circuit, the first start circuit includes: a first capacitor; a first terminal of the first capacitor receives a power battery signal, and a second terminal of the first capacitor is connected to the output terminal of the first start circuit.

[0016] Optionally, in the activation lock control circuit, the second start circuit includes: a third switch and a fourth switch connected in series; the first terminal of the third switch receives the power battery signal, the second terminal of the third switch is connected to the first terminal of the fourth switch, and the third terminal of the third switch is connected to the output terminal of the second start circuit; the second terminal of the fourth switch is connected to the ground terminal, and the third terminal of the fourth switch receives the activation signal.

[0017] Optionally, in the activation lock control circuit, the second start circuit further includes: a fifth resistor, a sixth resistor, a seventh resistor, a second diode, and a third diode; the fifth resistor is connected to the first terminal and the second terminal of the third switch; the sixth resistor is connected in series between the third switch and the fourth switch; the seventh resistor is connected to the second terminal of the fourth switch; the second diode is connected between the third terminal of the third switch and the output terminal of the second start circuit, and the anode of the second diode is connected to the third terminal of the third switch; the anode of the third diode is connected to the third terminal of the fourth switch, and the cathode of the third diode receives the activation signal.

[0018] Optionally, in the activation lock control circuit, the lock circuit includes: a microcontroller unit, a holding circuit, an eighth resistor, and a fourth diode; the microcontroller unit detects the state of the power battery and outputs a third-level signal or a fourth-level signal, wherein the level of the third-level signal is higher than the level of the fourth-level signal; the holding circuit receives the output signal of the power supply and holds the fourth-level signal at the output terminal of the microcontroller unit when the microcontroller unit outputs the fourth-level signal; the first terminal of the eighth resistor receives the output signal of the power supply, and the second terminal of the eighth resistor is connected to the anode of the fourth diode and the output terminal of the microcontroller unit; the cathode of the fourth diode is connected to the output terminal of the lock circuit.

[0019] Optionally, in the activation lockout control circuit, the holding circuit includes: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a fifth diode, a second capacitor, a fifth switch, and a sixth switch; the anode of the fifth diode receives the output signal of the power supply, and the cathode of the fifth diode is connected to the first end of the ninth resistor; the second end of the ninth resistor is connected to the first end of the second capacitor and the first end of the fifth switch; the second end of the second capacitor is connected to the ground; the tenth, eleventh, and twelfth resistors are connected in parallel; the second end of the fifth switch is connected to the first end of the tenth resistor, and the third end of the fifth switch is connected to the first end of the eleventh resistor and the first end of the twelfth resistor; the first end of the sixth switch, the second end of the tenth resistor, and the anode of the fourth diode are connected, the second end of the sixth switch is connected to the second end of the eleventh resistor, and the third end of the sixth switch is connected to the second end of the twelfth resistor and connected to the ground.

[0020] The present invention also provides a battery system comprising: a power battery; an activation lock control circuit as described above, the activation lock control circuit being connected to the power battery; and a battery protection board connected to the activation lock control circuit and the power battery, the activation lock control circuit controlling the start and stop of the battery protection board by whether or not power is supplied.

[0021] In the activation lock control circuit and battery system provided by the present invention, the battery system includes a power battery, an activation lock control circuit and a battery protection board connected in sequence. The activation lock control circuit controls whether the battery protection board works or not, thereby avoiding the consumption of battery energy in storage, transportation and power depletion. Attached Figure Description

[0022] Figure 1 This is a block structure diagram of the battery system according to an embodiment of the present invention.

[0023] Figure 2 This is a circuit diagram of the activation locking control circuit according to an embodiment of the present invention.

[0024] The reference numerals in the attached figures are explained as follows:

[0025] 1-Battery system; 2-Electrical equipment; 10-Power battery; 20-Activation lock control circuit; 30-Battery protection board; 210-Power supply; 220-Power supply control circuit; 230-Unlocking circuit; 231-First start circuit; 232-Second start circuit; 233-Maintenance lock circuit.

[0026] Q1 - First switch; Q2 - Second switch; Q3 - Third switch; Q4 - Fourth switch; Q5 - Fifth switch; Q6 - Sixth switch.

[0027] R1 - First resistor; R2 - Second resistor; R3 - Third resistor; R4 - Fourth resistor; R5 - Fifth resistor; R6 - Sixth resistor; R7 - Seventh resistor; R8 - Eighth resistor; R9 - Ninth resistor; R10 - Tenth resistor; R11 - Eleventh resistor; R12 - Twelfth resistor.

[0028] D1 - First diode; D2 - Second diode; D3 - Third diode; D4 - Fourth diode; D5 - Fifth diode.

[0029] C1 - First capacitor; C2 - Second capacitor.

[0030] U1 - Microcontroller unit; U2 - Holding circuit. Detailed Implementation

[0031] The activation lock control circuit and battery system proposed in this invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this invention.

[0032] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. Unless otherwise defined in this application, the technical or scientific terms used in this invention should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, terms such as "upper / upper layer," "lower / lower layer," and similar terms are for ease of description only and are not limited to a location or spatial orientation. Terms such as "comprising" or "including" mean that the element or object preceding "comprising" covers the element or object listed following "comprising" or "including" and its equivalents, and does not exclude other elements or objects. Terms such as "connection" or "linkage" are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0033] The core idea of ​​this invention is to provide an activation lock control circuit and a battery system. The battery system includes a power battery, an activation lock control circuit, and a battery protection board connected in sequence. The activation lock control circuit controls whether the battery protection board works or not, thereby avoiding the consumption of battery energy during storage, transportation, and when the battery is depleted.

[0034] For details, please refer to Figure 1 This is a schematic diagram of the block structure of the battery system according to an embodiment of the present invention. Figure 1As shown, the battery system 1 includes: a power battery 10; an activation lock control circuit 20 connected to the power battery 10; and a battery protection board 30 connected to the activation lock control circuit 20 and the power battery 10. The activation lock control circuit 20 controls the activation and deactivation of the battery protection board 30 by controlling whether power is supplied. This prevents the consumption of battery energy in the power battery 10 during storage, transportation, and periods of low power. Furthermore, the battery system 1 is connected to an electrical device 2 to provide power to the electrical device 2.

[0035] For further details, please refer to... Figure 2 This is a circuit diagram of the activation locking control circuit according to an embodiment of the present invention. Figure 1 and Figure 2 As shown, the activation lock control circuit 20 includes: a power supply 210, a power supply control circuit 220 connected to the power supply 210, and an unlocking circuit 230 connected to the power supply control circuit 220; wherein, the unlocking circuit 230 outputs a first level signal or a second level signal to control the power supply control circuit 220 to be turned on or off, the level of the first level signal is higher than the level of the second level signal, that is, in this embodiment, the first level signal is a high level signal and the second level signal is a low level signal; when the power supply control circuit 220 is turned on, the power supply 210 provides power voltage; when the power supply control circuit 220 is turned off, the power supply 210 does not supply power.

[0036] In this embodiment, the unlocking circuit 230 specifically includes a first starting circuit 231, a second starting circuit 232, and a locking circuit 233. The first starting circuit 231, when the activation locking control circuit 20 is first powered on, controls the power supply control circuit 220 to conduct under the control of the power battery signal Vbat+. The second starting circuit 232, after the activation locking control circuit 20 is powered on, controls the power supply control circuit 220 to conduct under the control of the power battery signal Vbat+ and the activation signal C-. Here, the activation signal C- is a negative voltage signal. The locking circuit 233 is used to output the first level signal when the power supply 210 provides power voltage, that is, when the power battery 10 is in normal working condition, so as to keep the power supply 210 working; while in storage, transportation, power depletion and other stages, it controls the power supply control circuit 220 to disconnect, so that the power supply 210 does not supply power, and thus the battery protection board 30 does not work, avoiding the consumption of battery energy of the power battery 10.

[0037] The first starting circuit 231 is connected to the power supply control circuit 220. The first starting circuit 231 receives the power battery signal Vbat+ and outputs the first level signal (high level signal) upon initial power-on. The second starting circuit 232 is connected to the power supply control circuit 220. The second starting circuit 232 receives the power battery signal Vbat+ and the activation signal C- and outputs the first level signal. The locking circuit 233 is connected to the power supply control circuit 220. The locking circuit 233 receives the locking signal and outputs the second level signal.

[0038] Please continue to refer to this. Figure 2 Specifically, the power supply control circuit 220 includes: a first switch Q1 and a second switch Q2 connected in series; the first terminal of the first switch Q1 receives the power battery signal Vbat+, the second terminal of the first switch Q1 is connected to the first terminal of the second switch Q2, and the third terminal of the first switch Q1 is connected to the output terminal of the power supply control circuit 220, that is, the third terminal of the first switch Q1 serves as the output terminal of the power supply control circuit 220; the second terminal of the second switch Q2 receives the output signal of the unlocking circuit 230, which is either a first level signal or a second level signal, and the third terminal of the second switch Q2 is grounded to GND.

[0039] Furthermore, the power supply control circuit 220 also includes: a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a first diode D1; the first resistor R1 and the first diode D1 are connected in parallel with the first switching transistor Q1, and the cathode of the first diode D1 receives the power battery signal Vbat+; the second resistor R2 is connected in series between the first switching transistor Q1 and the second switching transistor Q2; the third resistor R3 is connected to the second terminal of the second switching transistor Q2; the fourth resistor R4 is connected to the second terminal and the third terminal of the second switching transistor Q2, that is, the fourth resistor R4 is connected between the second terminal and the third terminal of the second switching transistor Q2.

[0040] The output signal of the unlocking circuit 230 is provided to the second terminal of the second switch Q2 via the third resistor R3. In this embodiment, the first switch Q1 is a P-type field-effect transistor and the second switch Q2 is a transistor; in other embodiments of this application, the first switch Q1 and the second switch Q2 may also be other types of switches.

[0041] In this embodiment, the first switch Q1 and the second switch Q2 form an activation circuit to provide a path for the power supply 210, thereby controlling whether the power supply 210 supplies power or not. The first diode D1 is a Zener diode, which can protect the first switch Q1 within a certain voltage range, preventing damage to the first switch Q1. The first resistor R1 and the second resistor R2 can act as a voltage divider; at the same time, the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 can also act as voltage-bearing and current-limiting resistors. When the unlocking circuit 230 outputs a first level signal (i.e., a high level signal), the second switch Q2 is turned on, and the first resistor R1 and the second resistor R2 form a bias voltage to turn on the first switch Q1; when the unlocking circuit 230 outputs a second level signal (i.e., a low level signal), the second switch Q2 is turned off, and the first switch Q1 is also turned off, thereby shutting off the power supply 210, i.e., the power supply 210 does not supply power.

[0042] Please continue to refer to this. Figure 2 In this embodiment, the first start-up circuit 231 includes a first capacitor C1. The first terminal of the first capacitor C1 receives the power battery signal Vbat+, and the second terminal of the first capacitor C1 is connected to the output terminal of the first start-up circuit 231; that is, the second terminal of the first capacitor C1 serves as the output terminal of the first start-up circuit 231. Specifically, when the activation lock control circuit 20 is powered on for the first time, the power battery signal Vbat+ is connected, the first capacitor C1 charges and outputs a first-level signal, thereby controlling the power supply control circuit 220 to conduct, and subsequently controlling the power supply 210 to supply power.

[0043] The second start-up circuit 232 includes: a third switch Q3 and a fourth switch Q4 connected in series; the first terminal of the third switch Q3 receives the power battery signal Vbat+, the second terminal of the third switch Q3 is connected to the first terminal of the fourth switch Q4, and the third terminal of the third switch Q3 is connected to the output terminal of the second start-up circuit 232; the second terminal of the fourth switch Q4 is grounded to GND, and the third terminal of the fourth switch Q4 receives the activation signal C-.

[0044] In this embodiment, both the third switch Q3 and the fourth switch Q4 are transistors. When the activation signal C- is applied, the third switch Q3 and the fourth switch Q4 are turned on, and the second startup circuit 232 outputs a first level signal, thereby controlling the power supply control circuit 220 to turn on, and then controlling the power supply 210 to supply power.

[0045] Furthermore, the second startup circuit 232 also includes: a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a second diode D2, and a third diode D3; the fifth resistor R5 is connected to the first terminal and the second terminal of the third switch Q3, that is, the fifth resistor R5 is connected between the first terminal and the second terminal of the third switch Q3; the sixth resistor R6 is connected in series between the third switch Q3 and the fourth switch Q4; the seventh resistor R7 is connected to the second terminal of the fourth switch Q4, that is, the fourth switch Q4 is connected via the seventh resistor R5. 7. Ground terminal GND; The second diode D2 is connected between the third terminal of the third switch Q3 and the output terminal of the second startup circuit 232. The anode of the second diode D2 is connected to the third terminal of the third switch Q3. That is, in this embodiment, the cathode of the second diode D2 serves as the output terminal of the second startup circuit 232. The anode of the third diode D3 is connected to the third terminal of the fourth switch Q4. The cathode of the third diode D3 receives the activation signal C-. That is, the activation signal C- is provided to the fourth switch Q4 via the third diode D3.

[0046] In this embodiment, the fifth resistor R5 and the sixth resistor R6 function as a voltage divider. The second diode D2 and the third diode D3 provide reverse protection, improving the reliability of the second startup circuit 232.

[0047] like Figure 2 As shown, the locking circuit 233 includes: a microcontroller unit U1, a holding circuit U2, an eighth resistor R8, and a fourth diode D4; the microcontroller unit U1 detects the state of the power battery 10 and outputs a third-level signal or a fourth-level signal, wherein the level of the third-level signal is higher than the level of the fourth-level signal; the holding circuit U2 receives the output signal of the power supply 210 and holds the fourth-level signal at the output terminal of the microcontroller unit U1 when the microcontroller unit U1 outputs the fourth-level signal; the first terminal of the eighth resistor R8 receives the output signal of the power supply 210, and the second terminal of the eighth resistor R8 is connected to the anode of the fourth diode D4 and the output terminal of the microcontroller unit U1; the cathode of the fourth diode D4 is connected to the output terminal of the locking circuit 233, that is, the cathode of the fourth diode D4 serves as the output terminal of the locking circuit 233.

[0048] In this embodiment, the microcontroller unit U1 detects the state of the power battery 10 to determine whether the power battery 10 is in a normal working state or in a storage, transportation, or low-charge state. It then outputs a third-level signal or a fourth-level signal to keep the power supply control circuit 220 on or to control the power supply control circuit 220 off. This ensures that when the power battery 10 is in a storage, transportation, or low-charge state, the power supply control circuit 220 is disconnected, and the power supply 210 does not supply power, preventing the battery protection board 30 from consuming battery energy.

[0049] Further, the holding circuit U2 includes: a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a fifth diode D5, a second capacitor C2, a fifth switch Q5, and a sixth switch Q6; the anode of the fifth diode D5 receives the output signal from the power supply 210, and the cathode of the fifth diode D5 is connected to the first terminal of the ninth resistor R9; the second terminal of the ninth resistor R9 is connected to the first terminal of the second capacitor C2 and the first terminal of the fifth switch Q5; the second terminal of the second capacitor C2 is grounded to GND; the tenth resistor R10, the... The eleventh resistor R11 and the twelfth resistor R12 are connected in parallel; the second terminal of the fifth switch Q5 is connected to the first terminal of the tenth resistor R10, and the third terminal of the fifth switch Q5 is connected to the first terminal of the eleventh resistor R11 and the first terminal of the twelfth resistor R12; the first terminal of the sixth switch Q6 is connected to the second terminal of the tenth resistor R10 and the anode of the fourth diode D4, the second terminal of the sixth switch Q6 is connected to the second terminal of the eleventh resistor R11, and the third terminal of the sixth switch Q6 is connected to the second terminal of the twelfth resistor R12 and grounded to GND.

[0050] Specifically, when the power battery 10 is in normal working condition, the microcontroller unit U1 outputs a third level signal, i.e., a high level signal. The fifth switch Q5 and the sixth switch Q6 are interlocked, and the fifth switch Q5 and the sixth switch Q6 are turned off. The interlocking circuit 233 outputs a first level signal, i.e., a high level signal. Here, the output signal of the power supply 210 is received through the first terminal of the eighth resistor R8, i.e., the pull-up signal is provided through the eighth resistor R8 and the fourth diode D4 to keep the power supply control circuit 220 on, and the power supply 210 continuously supplies power. When the power battery 10 is in storage, transportation, or low-charge state, the microcontroller U1 outputs a fourth level signal, i.e., a low level signal. The fifth switch Q5 and the sixth switch Q6 are turned on, pulling down and maintaining the low level signal at the output terminal of the microcontroller U1. This causes the locking circuit 233 to output a second level signal, i.e., a low level signal. The power supply control circuit 220 is disconnected, and the power supply 210 does not supply power, thereby preventing the battery protection board 30 from consuming battery energy.

[0051] In this embodiment, when the power battery 10 is operating normally, the locking circuit 233 in the unlocking circuit 230 maintains the output of the first level signal; when the power battery 10 is in storage, transportation, or low-charge state, the locking circuit 233 outputs a low-level signal, thereby disconnecting the power supply control circuit 220 and causing the power supply 210 to stop supplying power. This maintains the normal operation of the battery protection board 30 while preventing the battery protection board 30 from consuming battery energy during storage, transportation, or low-charge states.

[0052] The ninth resistor R9 and the second capacitor C2 form an RC delay circuit, providing a delay function and thus improving the reliability of the activation lock-up control circuit 20. The fourth diode D4 and the fifth diode D5 provide anti-reverse protection, further enhancing the reliability of the activation lock-up control circuit 20. Simultaneously, the ninth resistor R9, the second capacitor C2, and the fifth diode D5 prevent false triggering of the power supply 210 lock-up. The tenth resistor R10, the eleventh resistor R11, and the twelfth resistor R12 achieve current limiting and voltage division.

[0053] In summary, the activation lock control circuit and battery system provided by the present invention include a power battery, an activation lock control circuit, and a battery protection board connected in sequence. The activation lock control circuit controls whether the battery protection board works, thereby preventing the consumption of battery energy during storage, transportation, and power depletion.

[0054] In this application, references to "one embodiment" or "some embodiments" mean that a feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment or at least some embodiments of this application. Therefore, the appearance of the phrases "in one embodiment" or "in some embodiments" throughout this application does not necessarily refer to the same or the same embodiments. Furthermore, in one or more embodiments, features, structures, or characteristics can be combined in any suitable combination and / or sub-combination.

[0055] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of this application. The embodiments of this application can be combined in any way without departing from the spirit and scope of this application. Those skilled in the art should also understand that various modifications can be made to the embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. An activation lock control circuit, comprising: The activation lock control circuit comprises a power supply, a power supply control circuit connected with the power supply, and a lock-on circuit connected with the power supply control circuit; wherein The lock-on circuit outputs a first level signal or a second level signal to control the conduction or disconnection of the power supply control circuit, the first level signal having a higher level than the second level signal. When the power supply control circuit is in conduction, the power supply provides a power supply voltage; when the power supply control circuit is in disconnection, the power supply does not provide power.

2. The activation lock control circuit of claim 1, wherein, The lock-on circuit comprises a first start-up circuit and a lock-keeping circuit; wherein The first start-up circuit is connected with the power supply control circuit, and receives a power battery signal and outputs the first level signal at first power-on; The lock-keeping circuit is connected with the power supply control circuit, and receives a lock signal and outputs the second level signal.

3. The activation lock control circuit of claim 2, wherein, The lock-on circuit further comprises a second start-up circuit; wherein The second start-up circuit is connected with the power supply control circuit, and receives the power battery signal and an activation signal and outputs the first level signal.

4. The activation lock control circuit of claim 3, wherein, The lock-keeping circuit receives an output signal of the power supply, and outputs the first level signal when the power supply provides a power supply voltage.

5. The activation lock control circuit of any one of claims 1-4, wherein, The power supply control circuit comprises a first switch tube and a second switch tube connected in series; a first end of the first switch tube receives a power battery signal, a second end of the first switch tube and a first end of the second switch tube are connected, and a third end of the first switch tube and an output end of the power supply control circuit are connected; a second end of the second switch tube receives an output signal of the lock-on circuit, and a third end of the second switch tube is connected with a ground end.

6. The activation lock control circuit of claim 5, wherein, The power supply control circuit further comprises a first resistor, a second resistor, a third resistor, a fourth resistor, and a first diode; the first resistor, the first diode, and the first switch tube are connected in parallel, and a cathode of the first diode receives the power battery signal; the second resistor is connected in series between the first switch tube and the second switch tube; the third resistor is connected with the second end of the second switch tube; and the fourth resistor is connected with the second end of the second switch tube and the third end of the second switch tube.

7. The activation lock control circuit of any one of claims 2-4, wherein, The first start-up circuit comprises a first capacitor; a first end of the first capacitor receives a power battery signal, and a second end of the first capacitor is connected with an output end of the first start-up circuit.

8. The activation lock control circuit of claim 3 or 4, wherein, The second start-up circuit comprises a third switch tube and a fourth switch tube connected in series; a first end of the third switch tube receives the power battery signal, a second end of the third switch tube and a first end of the fourth switch tube are connected, and a third end of the third switch tube and an output end of the second start-up circuit are connected; a second end of the fourth switch tube is connected with the ground end, and a third end of the fourth switch tube receives an activation signal.

9. The activation lock control circuit of claim 8, wherein, The second starting circuit further comprises a fifth resistor, a sixth resistor, a seventh resistor, a second diode and a third diode; the fifth resistor is connected with the first end of the third switch tube and the second end of the third switch tube; the sixth resistor is connected in series between the third switch tube and the fourth switch tube; the seventh resistor is connected with the second end of the fourth switch tube; the second diode is connected between the third end of the third switch tube and the output end of the second starting circuit, and the anode of the second diode is connected with the third end of the third switch tube; the anode of the third diode is connected with the third end of the fourth switch tube, and the cathode of the third diode receives the activation signal.

10. The activation lock control circuit of claim 4, wherein, The hold circuit comprises a micro control unit, a holding circuit, an eighth resistor and a fourth diode; the micro control unit detects the state of the power battery and outputs a third level signal or a fourth level signal, and the level of the third level signal is higher than the level of the fourth level signal; the holding circuit receives the output signal of the power supply and holds the fourth level signal of the output end of the micro control unit when the micro control unit outputs the fourth level signal; the first end of the eighth resistor receives the output signal of the power supply, the second end of the eighth resistor is connected with the anode of the fourth diode and the output end of the micro control unit; and the cathode of the fourth diode is connected with the output end of the hold circuit.

11. The activation lock control circuit of claim 10, wherein, The holding circuit comprises a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a fifth diode, a second capacitor, a fifth switch tube and a sixth switch tube; the anode of the fifth diode receives the output signal of the power supply, and the cathode of the fifth diode is connected with the first end of the ninth resistor; the second end of the ninth resistor is connected with the first end of the second capacitor and the first end of the fifth switch tube; the second end of the second capacitor is connected with the ground end; the tenth resistor, the eleventh resistor and the twelfth resistor are connected in parallel; the second end of the fifth switch tube is connected with the first end of the tenth resistor, the third end of the fifth switch tube is connected with the first end of the eleventh resistor and the first end of the twelfth resistor; the first end of the sixth switch tube is connected with the second end of the tenth resistor and the anode of the fourth diode, the second end of the sixth switch tube is connected with the second end of the eleventh resistor, and the third end of the sixth switch tube is connected with the second end of the twelfth resistor and the ground end.

12. A battery system characterized by, The battery system comprises a power battery, an activation lock control circuit according to any one of claims 1-11, the activation lock control circuit being connected with the power battery, and a battery protection board connected with the activation lock control circuit and the power battery, and the activation lock control circuit controls the start-stop of the battery protection board according to whether the power supply is supplied.

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