Starting battery system and vehicle

Abstract

The invention provides a starting battery system and a vehicle. The starting battery system comprises a starting battery and a voltage reduction / current limiting module. The starting battery is used for outputting discharge voltage or discharge current to start a starter of the vehicle when the vehicle is started; the step-down / current-limiting module is located in a discharge loop of the starting battery, i.e., between the cathode of the starting battery and the cathode output end of the starting battery system, or between the anode of the starting battery and the anode output end of the starting battery system. And the voltage reduction / current limiting module is used for reducing the discharge voltage or limiting the discharge current. According to the starting battery system and the vehicle, the voltage reduction / current limiting module is used for reducing the discharge voltage output by the starting battery when the vehicle is started, or limiting the discharge current output by the starting battery when the vehicle is started, so that the problem that the vehicle cannot be started intermittently can be avoided; and the influence on the service time of the starting battery can be avoided.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular, relates to a starting battery system and a vehicle. Background Art

[0002] Currently, the automobile industry is developing towards electrification. In order to power the vehicle's starter when the vehicle is started, a starting battery needs to be installed on the vehicle.

[0003] When starting existing vehicles, the vehicle often fails to start intermittently due to the protection mechanism of the vehicle circuit being triggered in error.

[0004] For existing vehicles, the problem of intermittent failure to start the vehicle is reduced by lowering the upper limit of the starting battery charging voltage protection through the software. However, lowering the upper limit of the starting battery charging voltage protection will reduce the charging capacity of the starting battery, thereby affecting the service life of the starting battery. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a starting battery system and a vehicle, which can reduce the problem of intermittent failure to start caused by erroneous triggering of the protection mechanism of the vehicle circuit, and can avoid affecting the service life of the starting battery.

[0006] To achieve the above-mentioned effects, the present invention proposes a starting battery system, including a starting battery and a voltage reduction / current limiting module: the starting battery is used to output a discharge voltage or a discharge current to start the starter when the vehicle is started; the voltage reduction / current limiting module is located in the discharge circuit of the starting battery, and is used to reduce the discharge voltage or limit the discharge current.

[0007] In one embodiment, the starting battery system also includes a battery management chip, a discharge electronic switch and a charge electronic switch; the battery management chip is connected to the control end of the discharge electronic switch and the control end of the charge electronic switch, and is used to control the discharge electronic switch and the charge electronic switch; the discharge electronic switch is connected in series with the charge electronic switch in the discharge circuit.

[0008] In one embodiment, the voltage reduction / current limiting module is connected in parallel with the discharge electronic switch, and both are located between the negative electrode of the starting battery and the negative electrode output terminal of the starting battery system; the voltage reduction / current limiting module includes at least one first diode, the anode of the first diode is connected to the negative electrode output terminal, and the cathode of the first diode is connected to the negative electrode of the starting battery.

[0009] In one embodiment, the voltage reduction / current limiting module is connected in series with the discharge electronic switch, and both are located between the negative electrode of the starting battery and the negative electrode output end of the starting battery system; the voltage reduction / current limiting module includes at least one first diode or at least one resistor.

[0010] In one embodiment, the voltage step-down / current limiting module includes at least one first diode; wherein, the voltage step-down / current limiting module also includes at least one second diode, and / or a switching element, the second diode is connected in reverse parallel to the at least one first diode, and the switching element is connected in parallel to the at least one first diode.

[0011] In one embodiment, the voltage step-down / current limiting module includes a plurality of first diodes connected in series, and the voltage step-down / current limiting module includes a second diode; the anodes of the plurality of first diodes connected in series and the cathodes of the second diode are both connected to the negative output end, and the cathodes of the plurality of first diodes connected in series and the anodes of the second diode are both connected to the negative electrode.

[0012] In one embodiment, the voltage reduction / current limiting module is located between the positive electrode of the starting battery and the positive electrode output terminal of the starting battery system, and the voltage reduction / current limiting module includes at least one first diode or at least one resistor, the anode of the first diode is connected to the positive electrode of the starting battery, and the cathode of the first diode is connected to the positive electrode output terminal.

[0013] In one embodiment, the voltage step-down / current limiting module includes at least one first diode; wherein, the voltage step-down / current limiting module also includes at least one second diode, and / or a switching element, the second diode is connected in reverse parallel with the first diode, and the switching element is connected in parallel with the first diode.

[0014] In one embodiment, the voltage reduction / current limiting module includes at least one first diode; the anode of the first diode is also connected to the positive charging terminal of the starting battery system, and the cathode of the first diode is connected to the positive output terminal of the starting battery system.

[0015] The present application also provides a vehicle including the above-mentioned starting battery system.

[0016] A starting battery system and vehicle provided in the present application can reduce the discharge voltage output by the starting battery when starting the starter, or limit the discharge current output by the starting battery when starting the starter through a voltage reduction / current limiting module, and can reduce the starting instantaneous voltage or starting instantaneous current provided by the starting battery system, thereby reducing the problem of intermittent failure to start caused by false triggering of the protection mechanism of the vehicle circuit, and can avoid lowering the upper limit value of the charging voltage protection of the starting battery through software, which affects the service life of the starting battery.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation method is described below, and the detailed explanation is as follows in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure and connection relationship of the starting battery system of the first embodiment of the present application.

[0019] Figure 2 This is a schematic structural diagram of the voltage reduction / current limiting module of the first embodiment of the present application.

[0020] Figure 3 Schematic diagram of the structure and connection relationship of the starting battery system of the second embodiment of the present application.

[0021] Figure 4 This is a schematic structural diagram of a voltage reduction / current limiting module according to a second embodiment of the present application.

[0022] Figure 5 Schematic diagram of the structure and connection relationship of the starting battery system of the third embodiment of the present application.

[0023] Figure 6 This is a structural circuit diagram of a voltage reduction / current limiting module according to the third embodiment of the present application.

[0024] Among them, 10 is a starting battery, 11 is a voltage reduction / current limiting module, 12 is a battery management chip, 13 is a discharge electronic switch, 14 is a charge electronic switch, 20 is a starter, D1 is a first diode, D2 is a second diode, K1 is a switch element, and R1 is a resistor. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings. The drawings provide specific implementation methods of the present application. In combination with the following drawings and examples, the present application is described in detail as follows.

[0026] The present application provides a starting battery system, such as Figure 1 As shown, the starting battery system includes a starting battery 10 and a voltage reduction / current limiting module 11. The starting battery 10 is used to output a discharge voltage or a discharge current to start the starter 20 when the vehicle is started. The started starter can be used to start the engine of the vehicle. Specifically, the starting battery 10 can be a lithium-ion starting battery for providing a discharge voltage or a discharge current for starting the vehicle, and can include a plurality of lithium-ion cells connected in series. In one embodiment, the starting battery 10 can also be used to support vehicle parking, for example, it can be used to power a parking air conditioner.

[0027] The voltage reduction / current limiting module 11 is located in the discharge circuit of the starting battery 10, and is used to reduce the discharge voltage or limit the discharge current. Specifically, in one embodiment, the voltage reduction / current limiting module 11 can be located between the negative electrode of the starting battery 10 and the negative electrode output terminal of the starting battery system. In other embodiments, the voltage reduction / current limiting module 11 can also be located between the positive electrode of the starting battery 10 and the positive electrode output terminal of the starting battery system. The positive electrode output terminal and the negative electrode output terminal are respectively connected to the positive power supply terminal and the negative power supply terminal of the starter 20 of the starting battery 10. In one embodiment, the positive electrode output terminal and the negative electrode output terminal can also be connected to the charging positive terminal and the charging negative terminal of the charging system corresponding to the starting battery 10, but not limited to. In one embodiment, the voltage reduction / current limiting module 11 can include at least one resistor or at least one first diode. In other embodiments, the voltage reduction / current limiting module 11 can also include other circuit elements that can realize the voltage reduction or current limiting function.

[0028] In one embodiment, if Figure 1As shown, the starting battery system may also include, but is not limited to, at least one of a battery management chip 12, a discharge electronic switch 13, a charge electronic switch 14, and a shunt (not shown in the figure). The discharge electronic switch 13 is located in the discharge circuit of the starting battery 10, for example, between the negative electrode of the starting battery 10 and the negative electrode output terminal of the starting battery system. Specifically, in one embodiment, the discharge electronic switch 13 may be connected in series with the charge electronic switch 14 and / or the shunt, and both are located between the negative electrode of the starting battery 10 and the negative electrode output terminal of the starting battery system. The shunt may be, but is not limited to, located between the negative electrode of the starting battery 10 and the discharge electronic switch 13, and connected to the battery management chip 12, for measuring the current value passing through the starting battery 10. Specifically, in one embodiment, the battery management chip 12 may be an analog front end battery management chip (Analog Front End Battery Management Chip, AFEMC), also known as an AFE battery management chip. The battery management chip 12 is connected to the control end of the discharge electronic switch 13 and the control end of the charge electronic switch 14, for controlling the discharge electronic switch 13 and the charge electronic switch 14. The battery management chip 12 can also be connected to the starting battery 10 to collect analog signals such as the voltage value and the current value of the starting battery 10 and convert them into digital signals for processing by a microcontroller unit (MCU). In addition, the battery management chip 12 can also be used for, but not limited to, balancing management of the starting battery 10.

[0029] Specifically, in one embodiment, please refer to Figure 2 , the voltage reduction / current limiting module 11 may include at least one first diode D1, for example, one first diode, or two first diodes D1 connected in series, or three first diodes D1 connected in series. The number of the first diodes D1 may be determined based on the actual voltage reduction requirement, and the present application is not limited thereto. Among them, the anode of the first diode D1 is connected to the negative output terminal of the starting battery system, and the cathode of the first diode D1 is connected to the negative electrode of the starting battery 10. When the voltage reduction / current limiting module 11 includes multiple first diodes D1 connected in series, the anodes of the multiple first diodes D1 connected in series are connected to the negative output terminal of the starting battery system, and the cathodes of the multiple first diodes D1 connected in series are connected to the negative electrode of the starting battery 10. In other embodiments, the voltage reduction / current limiting module 11 may also include at least one resistor. Specifically, the voltage reduction / current limiting module 11 may include, for example, multiple resistors connected in series.

[0030] In one embodiment, please also refer to Figure 1 and Figure 2, the step-down / current limiting module 11 can be connected in parallel with the discharge electronic switch 13, and both are located between the negative electrode of the starter battery 10 and the negative electrode output terminal of the starter battery system. The step-down / current limiting module 11 can include at least one first diode D1, the anode of the first diode D1 is connected to the charging electronic switch 14, and the cathode of the first diode D1 is connected to the negative electrode of the starter battery 10. When the starter battery 10 is discharged, the battery management chip 12 controls the discharge electronic switch 13 to be disconnected and the charging electronic switch 14 to be closed, and the step-down / current limiting module 11 is connected to the discharge circuit. At least one first diode D1 in the step-down / current limiting module 11 causes the startup instantaneous voltage output by the starter battery system to drop, thereby reducing the problem of intermittent failure to start caused by false triggering of the protection mechanism of the vehicle circuit. When the starting battery 10 is charged, the battery management chip 12 controls the discharge electronic switch 13 to close, the charging electronic switch 14 to close, and the voltage reduction / current limiting module 11 is short-circuited. Therefore, the voltage reduction / current limiting module 11 does not affect the charging of the starting battery 10, thereby further preventing the first diode D1 from affecting the service life of the starting battery 10. Figure 3 Schematic diagram of the structure and connection relationship of the starting battery system of the second embodiment of the present application, such as Figure 3 As shown, the voltage reduction / current limiting module 11 is connected in series with the discharge electronic switch 13, and both are located between the negative electrode of the starting battery 10 and the negative electrode output terminal of the starting battery system. Figure 3 As shown, in one embodiment, the voltage reduction / current limiting module 11 may be located between the charging electronic switch 14 and the negative output terminal of the starting battery system. Figure 4 FIG. 1 is a schematic diagram of the structure of the voltage reduction / current limiting module 11 of the second embodiment. Figure 4 As shown, the voltage reduction / current limiting module 11 includes at least one first diode D1 or at least one resistor R1. The number of resistors R1 can be set based on the actual current limiting requirements. In one embodiment, the voltage reduction / current limiting module 11 includes at least one first diode D1, the anode of the first diode D1 is connected to the negative output terminal, and the cathode of the first diode D1 is connected to the negative electrode of the starting battery 10. In addition, the voltage reduction / current limiting module 11 also includes at least one second diode D2 ( Figure 4Only one is shown, but the present application is not limited thereto), and / or a switching element K1, the second diode D2 is connected in reverse parallel to the first diode D1, and the switching element K1 is connected in parallel to the first diode D1. Wherein, when the voltage reduction / current limiting module 11 includes a first diode D1 and a second diode D2, the second diode D2 is connected in reverse parallel to the first diode D1 as follows: the anode of the second diode D2 is connected to the cathode of the first diode D1, and the cathode of the second diode D2 is connected to the anode of the first diode D1. When the voltage reduction / current limiting module 11 includes a plurality of first diodes D1 connected in series, the second diode D2 is connected in reverse parallel to the first diode D1 as follows: the anodes of the plurality of first diodes D1 connected in series, i.e., the anodes of the first diode string, are connected to the cathodes of the second diode D2, and the cathodes of the plurality of first diodes D1 connected in series, i.e., the cathodes of the first diode string, are connected to the anodes of the second diode D2. Specifically, in one embodiment, the number of the second diodes D2 in the voltage reduction / current limiting module 11 is less than the number of the first diodes D1 , so as to reduce the impact of the voltage reduction / current limiting module 11 on the charging of the starting battery 10 .

[0031] Specifically, please refer to Figure 4 In scheme 1, the voltage reduction / current limiting module 11 may include at least one first diode D1, and a second diode D2 connected in reverse parallel with the first diode D1. When the starting battery 10 is discharged, at least one first diode D1 in the voltage reduction / current limiting module 11 is forward-conducted, and at least one first diode D1 in the voltage reduction / current limiting module 11 reduces the discharge voltage output by the starting battery 10, thereby reducing the starting instantaneous voltage provided by the starting battery system, thereby reducing the intermittent failure to start caused by the protection mechanism of the vehicle circuit being falsely triggered. When the starting battery 10 is charged, the charging current can flow from the negative electrode of the starting battery 10 through the second diode D2 to the negative electrode output terminal, thereby charging the starting battery 10.

[0032] Specifically, please refer to Figure 4In the scheme 2, the voltage reduction / current limiting module 11 includes at least one first diode D1 and a switch element K1 connected in parallel with the first diode D1. The control end of the switch element K1 can be connected to the battery management chip 12 (not shown) to be turned on or off based on the control of the battery management chip 12. Specifically, when the starting battery 10 is discharged and the discharge voltage of the starting battery 10 needs to be reduced, the switch element K1 is disconnected, and at least one first diode D1 in the voltage reduction / current limiting module 11 is forwardly conducted, and the discharge voltage of the starting battery 10 is reduced, so that the starting instantaneous voltage provided by the starting battery system can be reduced, and the protection mechanism of the vehicle circuit can be mistriggered, which can reduce the problem of intermittent failure to start. When the starting battery 10 is discharged and the discharge voltage of the starting battery 10 does not need to be reduced, or when the starting battery 10 is charged, the switch element K1 is closed, and the voltage reduction / current limiting module 11 is short-circuited, so the voltage reduction / current limiting module 11 does not affect the battery charging and discharging circuit.

[0033] Specifically, please refer to Figure 4 In scheme 3, the voltage reduction / current limiting module 11 may include at least one first diode D1, a second diode D2 connected in reverse parallel to the first diode D1, and a switch element K1 connected in parallel to the first diode D1. Specifically, when the starting battery 10 is discharged, if the switch element K1 is disconnected, the at least one first diode D1 in the voltage reduction / current limiting module 11 reduces the discharge voltage output by the starting battery 10, thereby reducing the starting instantaneous voltage provided by the starting battery system, thereby reducing the problem of intermittent failure to start caused by the false triggering of the protection mechanism of the vehicle circuit. When the starting battery 10 is charged, if the switch element K1 is disconnected, the charging current of the starting battery 10 can flow from the negative electrode of the starting battery 10 through the second diode D2 to the negative electrode output terminal, thereby charging the starting battery 10. When the starting battery 10 is discharged and there is no need to reduce the discharge voltage of the starting battery 10, or when the starting battery 10 is charged, the switch element K1 is closed and the voltage reduction / current limiting module 11 is short-circuited, so the voltage reduction / current limiting module 11 does not affect the battery charging and discharging circuit.

[0034] Specifically, please refer to Figure 4In scheme 4, the voltage reduction / current limiting module 11 may include at least one resistor R1, and at least one resistor R1 is located between the negative electrode of the starting battery 10 and the negative electrode output terminal of the starting battery system. In one embodiment, the voltage reduction / current limiting module 11 includes a plurality of resistors R1 connected in series. Specifically, when the starting battery 10 is discharged, the resistor R1 in the voltage reduction / current limiting module 11 limits the discharge current output by the starting battery 10, thereby reducing the instantaneous starting current provided by the starting battery system, thereby reducing the intermittent failure to start caused by the false triggering of the protection mechanism of the vehicle circuit. In other embodiments, the voltage reduction / current limiting module 11 may also include a switching element K1 connected in parallel with the resistor R, and the switching element K1 may be disconnected when the starting battery 10 is discharged, so that at least one resistor R in the voltage reduction / current limiting module 11 can reduce the discharge voltage output by the starting battery 10, thereby reducing the instantaneous starting voltage provided by the starting battery system, thereby reducing the intermittent failure to start caused by the false triggering of the protection mechanism of the vehicle circuit. When the starting battery 10 is charged, the switch element K1 is turned on, so that the charging current can flow from the negative electrode through the switch element K1 to the negative electrode output terminal of the starting battery 10, thereby charging the starting battery 10.

[0035] Figure 5 FIG. 1 is a schematic diagram of the structure and connection relationship of the starting battery system of the third embodiment of the present application. In one embodiment, the voltage reduction / current limiting module 11 is located between the positive electrode of the starting battery 10 and the positive electrode output terminal of the starting battery system. Figure 6 As shown, the voltage reduction / current limiting module 11 may include at least one first diode D1 or at least one resistor R1, wherein the anode of the first diode D1 is connected to the positive electrode of the starting battery 10, and the cathode of the first diode D1 is connected to the positive electrode output terminal. The number of resistors R1 may be set based on actual current limiting requirements.

[0036] In one embodiment, the voltage reduction / current limiting module 11 includes at least one first diode D1. In addition, the voltage reduction / current limiting module 11 also includes at least one second diode D2 ( Figure 6 Only one is shown in the figure, but the present application is not limited thereto), and / or a switch element K1. The second diode D2 is connected in reverse parallel to the first diode D1, and the switch element K1 is connected in parallel to the first diode D1. Specifically, in one embodiment, the number of the second diodes D2 in the voltage reduction / current limiting module 11 is less than the number of the first diodes D1, so as to reduce the influence of the voltage reduction / current limiting module 11 on the charging of the starter battery 10.

[0037] Specifically, please refer to Figure 6Solution 1: The voltage reduction / current limiting module 11 may include at least one first diode D1, and a second diode D2 connected in reverse parallel with the first diode D1, wherein the anode of the first diode D1 is connected to the positive electrode of the starting battery 10, and the cathode of the first diode D1 is connected to the positive electrode output terminal. When the starting battery 10 is discharged, at least one first diode D1 in the voltage reduction / current limiting module 11 is forward-conducted, and at least one first diode D1 in the voltage reduction / current limiting module 11 reduces the discharge voltage output by the starting battery 10, thereby reducing the instantaneous starting voltage provided by the starting battery system, thereby reducing the intermittent failure to start caused by the false triggering of the protection mechanism of the vehicle circuit. When the starting battery 10 is charged, the charging current can flow from the positive electrode output terminal through the second diode D2 to the positive electrode of the starting battery 10, thereby charging the starting battery 10.

[0038] Specifically, please refer to Figure 6 In scheme 2, the voltage reduction / current limiting module 11 includes at least one first diode D1 and a switch element K1 connected in parallel with the first diode D1. The control end of the switch element K1 can be connected to the battery management chip 12 (not shown) to be turned on or off based on the control of the battery management chip 12. Specifically, when the starting battery 10 is discharged and the discharge voltage of the starting battery 10 needs to be reduced, the switch element K1 is disconnected, and at least one first diode D1 in the voltage reduction / current limiting module 11 is connected to the discharge circuit, and the discharge voltage of the starting battery 10 is reduced. When the starting battery 10 is discharged and the discharge voltage of the starting battery 10 does not need to be reduced, or when the starting battery 10 is charged, the switch element K1 is closed, and the voltage reduction / current limiting module 11 is short-circuited, so the voltage reduction / current limiting module 11 does not affect the battery charge and discharge circuit.

[0039] Specifically, please refer to Figure 6In the scheme 3, the voltage reduction / current limiting module 11 may include at least one first diode D1, a second diode D2 connected in reverse parallel to the first diode D1, and a switch element K1 connected in parallel to the first diode D1. Specifically, when the starting battery 10 is discharged, if the switch element K1 is disconnected, the at least one first diode D1 in the voltage reduction / current limiting module 11 reduces the discharge voltage output by the starting battery 10, thereby reducing the instantaneous starting voltage provided by the starting battery system, thereby reducing the problem of intermittent failure to start caused by the false triggering of the protection mechanism of the vehicle circuit. When the starting battery 10 is charged, if the switch element K1 is disconnected, the charging current can flow from the positive output end through the second diode D2 to the positive electrode of the starting battery 10, thereby charging the starting battery 10. When the starting battery 10 is discharged and the discharge voltage of the starting battery 10 does not need to be reduced, or when the starting battery 10 is charged, the switch element K1 is closed, and the voltage reduction / current limiting module 11 is short-circuited, so the voltage reduction / current limiting module 11 does not affect the battery charging and discharging circuit.

[0040] Specifically, please refer to Figure 6 In scheme 4, the voltage reduction / current limiting module 11 may include at least one first diode D1. The anode of the first diode D1 is connected to the positive electrode of the starting battery 10 and the positive charging terminal of the starting battery system, and the cathode of the first diode D1 is connected to the positive output terminal of the starting battery system. Specifically, when the starting battery 10 is discharged, at least one first diode D1 in the voltage reduction / current limiting module 11 reduces the discharge voltage output by the starting battery 10, thereby reducing the starting instantaneous voltage provided by the starting battery system, thereby reducing the intermittent failure to start caused by the false triggering of the protection mechanism of the vehicle circuit. When the starting battery 10 is charged, the charging current can flow from the positive charging terminal to the positive electrode of the starting battery 10, thereby charging the starting battery 10.

[0041] Specifically, please refer to Figure 6 In scheme 5, the voltage reduction / current limiting module 11 may include at least one resistor R1. In one embodiment, the voltage reduction / current limiting module 11 may include multiple resistors R1 connected in series, wherein the multiple resistors R1 connected in series are located between the positive electrode of the starting battery 10 and the positive electrode output terminal of the starting battery system. Specifically, when the starting battery 10 is discharged, the resistor R1 in the voltage reduction / current limiting module 11 limits the discharge current output by the starting battery 10, thereby reducing the instantaneous starting current of the starting battery system, thereby reducing the intermittent failure to start caused by the false triggering of the protection mechanism of the vehicle circuit.

[0042] The present application also provides a vehicle, the vehicle including a starting battery system. The specific structure and working principle of the starting battery system can be referred to the above description, which will not be repeated here.

[0043] A starting battery system and a vehicle provided in the present application can reduce the discharge voltage output by the starting battery when the vehicle is started, or limit the discharge current output by the starting battery when the vehicle is started, through a voltage reduction / current limiting module, thereby reducing the instantaneous starting voltage or instantaneous starting current provided by the starting battery system, thereby reducing the problem of intermittent starting failure caused by false triggering of the protection mechanism of the vehicle circuit, and avoiding the impact on the service life of the starting battery by lowering the upper limit value of the starting battery charging voltage protection through software.

[0044] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the technical contents disclosed above without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A starting battery system, characterized in that: The starting battery system includes a starting battery and a voltage reduction / current limiting module: The starting battery is used to output a discharge voltage or a discharge current when the vehicle is started, so as to start the starter of the vehicle; The voltage reduction / current limiting module is located in the discharge circuit of the starting battery, and is used to reduce the discharge voltage or limit the discharge current.

2. The starting battery system according to claim 1, characterized in that: The starting battery system also includes a battery management chip, a discharge electronic switch and a charge electronic switch; The battery management chip is connected to the control end of the discharge electronic switch and the control end of the charge electronic switch, and is used to control the discharge electronic switch and the charge electronic switch; The discharging electronic switch is connected in series with the charging electronic switch in the discharging circuit.

3. The starting battery system according to claim 2, characterized in that: The voltage reduction / current limiting module is connected in parallel with the discharge electronic switch, and both are located between the negative electrode of the starting battery and the negative electrode output end of the starting battery system; the voltage reduction / current limiting module includes at least one first diode, the anode of the first diode is connected to the negative electrode output end, and the cathode of the first diode is connected to the negative electrode of the starting battery.

4. The starting battery system according to claim 2, characterized in that: The voltage reduction / current limiting module is connected in series with the discharge electronic switch, and both are located between the negative electrode of the starting battery and the negative electrode output end of the starting battery system; the voltage reduction / current limiting module includes at least one first diode or at least one resistor, the anode of the first diode is connected to the negative electrode output end, and the cathode of the first diode is connected to the negative electrode of the starting battery.

5. The starting battery system according to claim 4, characterized in that: The voltage reduction / current limiting module includes the at least one first diode; Wherein, the voltage reduction / current limiting module further includes: at least one second diode, the second diode being connected in anti-parallel with the first diode; and / or A switch element is connected in parallel with the first diode.

6. The starting battery system according to claim 5, characterized in that: The voltage reduction / current limiting module includes a plurality of first diodes connected in series, and the voltage reduction / current limiting module includes a second diode; The anodes of the plurality of first diodes connected in series and the cathodes of the second diodes are both connected to the negative output end, and the cathodes of the plurality of first diodes connected in series and the anodes of the second diodes are both connected to the negative electrode.

7. The starting battery system according to claim 1 or 2, characterized in that: The voltage reduction / current limiting module is located between the positive electrode of the starting battery and the positive electrode output end of the starting battery system, and the voltage reduction / current limiting module includes at least one first diode or at least one resistor, the anode of the first diode is connected to the positive electrode of the starting battery, and the cathode of the first diode is connected to the positive electrode output end.

8. The starting battery system according to claim 7, characterized in that: The voltage reduction / current limiting module includes at least one first diode; The voltage reduction / current limiting module further includes at least one second diode and / or a switch element. The second diode is connected in reverse parallel with the first diode, and the switch element is connected in parallel with the first diode.

9. The starting battery system according to claim 7, characterized in that: The voltage reduction / current limiting module includes at least one first diode; the anode of the first diode is also connected to the positive charging terminal of the starting battery system.

10. A vehicle comprising the starting battery system according to any one of claims 1 to 9.

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