Power supply system and vehicle
By switching the relay status in the power supply system, the battery pack is powered by different converters to the load module, which solves the high energy consumption problem of new energy vehicles during standby, extends the battery life and enriches the intelligent vehicle use scenarios, especially in the sleep mode, only some of the system needs to work, significantly saving energy.
Patent Information
- Application Number
- CN202422542595.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-21
AI Technical Summary
In the prior art, new energy vehicles have high energy consumption problems during standby time, especially in sleep mode, when they need to wake up the vehicle's high-voltage system to replenish the battery, resulting in high costs and increased energy consumption.
A power supply system is adopted, including a battery pack, a main relay, a first relay and a converter. By switching the state of the relay in different modes, the battery pack is used to supply power to the load module through different converters, avoiding waking up the vehicle's high-voltage system and reducing power consumption.
It effectively reduces the energy consumption of the standby time of the whole vehicle, extends the battery life, reduces the number of charge and discharge times of the battery, and enriches the functions of intelligent vehicle use scenarios, especially in sentinel mode, only some of the system needs to work, which significantly saves energy.
Smart Images
Figure CN223252787U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of vehicle power supply, and in particular to a power supply system and a vehicle. Background Art
[0002] The automotive industry is a key pillar of the national economy and plays a vital role in national economic and social development. The new energy vehicle industry is a strategic emerging industry, and the development of energy-efficient vehicles is an effective measure to promote energy conservation and emission reduction. Energy and environmental issues are becoming increasingly serious. Faced with unprecedented public pressure, vigorously developing energy-efficient new energy vehicles is an effective way to address these challenges and a powerful measure for achieving national ecological progress. While new energy vehicles are popular for their intelligent features, they can also pose battery life issues, such as battery drain. A comprehensive power distribution solution is needed that meets these needs while maximizing energy conservation and addressing the risk of battery drain. Addressing these challenges requires a comprehensive power distribution solution.
[0003] In the existing technology, large-capacity batteries are generally used to increase the vehicle's standby time, and the battery power is regularly tested. If the battery power is low, the vehicle's high-voltage system needs to be awakened to recharge the battery, which results in high costs and increases the energy consumption of the vehicle. Utility Model Content
[0004] In order to solve the above technical problems, the present disclosure provides a power supply system and a vehicle, which are conducive to saving energy consumption.
[0005] In a first aspect, an embodiment of the present disclosure provides a power supply system, comprising: a battery pack, the battery pack comprising a battery group, a main relay, a first relay and a first converter, one end of the first relay being connected to the battery pack, and the other end of the first relay being connected to the first converter; a main converter, one end of the main relay being connected to the battery pack, and one end of the main relay being connected to the main converter; the main relay being further configured to close in a first mode and to open in a second mode; the first relay being configured to open in the first mode and to close in the second mode; in the first mode, the battery pack being configured to supply power to a load module via the main converter; and in the second mode, the battery pack being configured to supply power to the load module via the first converter.
[0006] In some embodiments, the main relay is also used to connect to the high-voltage system of the entire vehicle.
[0007] In some embodiments, the main converter is configured to output a first voltage to the load module in a first mode; the first converter is configured to output a second voltage to the load module in a second mode, where the second voltage is lower than the first voltage.
[0008] In some embodiments, the load module includes a low-voltage load control end and multiple low-voltage loads, the low-voltage load control end includes multiple switches, the switches correspond to the low-voltage loads one-to-one, one end of the switch is connected to the main converter and the first converter, and the other end of the switch is connected to the corresponding low-voltage load.
[0009] In some embodiments, the power supply system further includes a battery, which is connected to the first converter and the load module.
[0010] In some embodiments, in the second mode, the battery is used to output voltage to the load module in a first time period, and the battery pack is used to output voltage to the load module via the first converter in a second time period, wherein the first time period is before the second time period.
[0011] In some embodiments, the battery pack also includes a controller, which is communicatively connected to the main relay and the first relay. The controller is used to control the main relay to close and the first relay to open in the first mode. The controller is also used to control the first relay to close and the main relay to open in the second mode.
[0012] In some embodiments, the battery pack further includes a power distribution unit, the main relay and the first relay are integrated into the power distribution unit, and the controller is communicatively connected to the power distribution unit.
[0013] In some embodiments, the battery pack also includes an input current acquisition circuit, an input voltage acquisition circuit, an output current acquisition circuit, and an output voltage acquisition circuit that are communicatively connected to the controller; the input current acquisition circuit and the input voltage acquisition circuit are connected to the input end of the first converter, and the output current acquisition circuit and the output voltage acquisition circuit are connected to the output end of the first converter.
[0014] In a second aspect, the present disclosure further provides a vehicle, comprising the power supply system provided by the present disclosure.
[0015] The technical solution provided by the present disclosure has the following advantages compared with the existing technology:
[0016] The power supply system provided by the present disclosure is used for vehicles. The power supply system includes a battery pack and a main converter. The battery pack includes a battery group, a main relay, a first relay and a first converter. When the vehicle enters the first mode, the main relay is closed, the first relay is disconnected, and the battery pack supplies power to the load module via the main converter. When the vehicle enters the second mode, the main relay is disconnected, the first relay is closed, and the battery pack supplies power to the load module via the first converter. At this time, there is no need to wake up the high-voltage system of the entire vehicle, that is, the power supply system does not require any support from other parts of the entire vehicle when working, and does not require vehicle communication, which effectively reduces power consumption and increases the standby time of the entire vehicle. At the same time, when the vehicle enters the second mode, when triggering the intelligent parking scene, such as the sentry mode, only the first converter is required to work, and the high-voltage system of the entire vehicle is not required to work, and the intelligent vehicle use scene is richer. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0018] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0019] Figure 1 is a structural diagram of a power supply system provided by an embodiment of the present disclosure;
[0020] Figure 2 This is a workflow diagram of the power supply system provided by the embodiment of the present disclosure;
[0021] Figure 3 This is a connection principle diagram of the first converter provided in an embodiment of the present disclosure. DETAILED DESCRIPTION
[0022] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.
[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0024] Figure 1 This is a schematic diagram of a power supply system provided by an embodiment of the present disclosure. Figure 1 , this embodiment provides a power supply system, including:
[0025] The battery pack 10 includes a battery pack 11, a main relay R1, a first relay R2, and a first converter MDCDC. One end of the first relay R2 is connected to the battery pack 11, and the other end of the first relay R2 is connected to the first converter MDCDC.
[0026] Main converter DCDC, one end of the main relay DCDC is connected to the battery pack 11, and one end of the main relay R1 is connected to the main converter DCDC;
[0027] The main relay R1 is also used to close in the first mode and open in the second mode;
[0028] The first relay R2 is used to open in the first mode and close in the second mode;
[0029] In the first mode, the battery pack 11 is used to supply power to the load module 20 via the main converter DCDC;
[0030] In the second mode, the battery pack 11 is configured to supply power to the load module 20 via the first converter MDCDC.
[0031] Specifically, the power supply system provided in this embodiment is used in a vehicle. Specifically, the power supply system provided in this embodiment is used to supply power to a load module 20 within the vehicle. The power supply system includes a battery pack 10 and a main converter DCDC. The main converter DCDC is connected to a battery pack 11 in the battery pack 10 via a main relay R1 in the battery pack 10. When the main relay R1 is closed, the battery pack 11 supplies power to the load module 20 via the main converter DCDC. Optionally, the main relay R1 is also used to connect to the vehicle's high-voltage system (not shown). That is, when the battery pack 11 supplies power to the load module 20 via the main converter DCDC, the vehicle's high-voltage system is in an awake state. The battery pack 10 also includes a first relay R2 and a first converter MDCDC. One end of the first relay R2 is connected to the battery pack 11, and the other end of the first relay R2 is connected to the first converter MDCDC. When the first relay R2 is closed, the battery pack 11 supplies power to the load module 20 via the first converter MDCDC.
[0032] The battery pack 11 includes a power battery, which may be a rechargeable lithium-ion battery for driving the vehicle. The power battery has the characteristics of high energy density, long life, and fast charge and discharge.
[0033] Combine Figure 1 and Figure 2 , Figure 2It is a work flow chart of the power supply system provided by the embodiment of the present disclosure. The vehicle has a first mode and a second mode. The first mode is the running mode, which includes the starting mode and the driving mode. The second mode includes the sleep mode. When the vehicle stops running and has not been used for a long time, it will enter the sleep mode. When the vehicle enters the first mode, the main relay R1 is closed, the first relay R2 is disconnected, and the battery pack 11 supplies power to the load module 20 via the main converter DCDC. When the vehicle enters the second mode, the main relay R1 is disconnected, the first relay R2 is closed, and the battery pack 11 supplies power to the load module 20 via the first converter MDCDC. At this time, there is no need to wake up the high-voltage system of the entire vehicle, that is, the power supply system does not require any support from other parts of the entire vehicle when working, and does not require vehicle communication, which effectively reduces power consumption to increase the standby time of the entire vehicle. At the same time, when the vehicle enters the second mode, when the intelligent parking scenario is triggered, such as the sentry mode, only the first converter MDCDC needs to work, and the high-voltage system of the entire vehicle does not need to work, and the intelligent vehicle usage scenario is richer.
[0034] For example, when the vehicle enters the second mode, when the vehicle is in sentry mode, the sentry work of the traditional solution requires the vehicle's high-voltage system, DHU, radar, camera and other controllers to work to support this scenario, and the scene power consumption is about 240W. In the present disclosure, only DHU, radar, and camera are required to work to complete this functional scenario, and the scene power consumption is about 80W, which effectively saves energy in the intelligent scene and reduces power consumption.
[0035] Optionally, when the vehicle enters the first mode, after closing the main relay R1, the first relay R2 is disconnected with a delay. For example, the first relay R2 may be disconnected after 5 seconds to prevent abnormalities of the entire vehicle during the switching process.
[0036] Continue to refer Figure 1 In some optional embodiments, both the main converter DCDC and the first converter MDCDC are connected to a load module 20. Optionally, the load module 20 includes a low-voltage load control terminal 21 and a plurality of low-voltage loads 22. The low-voltage load control terminal 21 includes a plurality of switches K. The switches K correspond one-to-one to the low-voltage loads 22. One end of the switch K is connected to the main converter DCDC and the first converter MDCDC, and the other end of the switch K is connected to the corresponding low-voltage load 22.
[0037] Specifically, when the vehicle enters the first mode, the main relay R1 is closed and the first relay R2 is opened. The battery pack 11 supplies power to the low-voltage load control terminal 21 through the main converter DCDC. The low-voltage load control terminal 21 can distribute power to the corresponding low-voltage load 22 by controlling the switch K to be closed and opened, that is, the low-voltage load control terminal 21 can realize point-to-point control to distribute power to the low-voltage load 22.
[0038] Similarly, when the vehicle enters the second mode, the main relay R1 is disconnected and the first relay R2 is closed. The battery pack 11 supplies power to the low-voltage load control terminal 21 through the first converter MDCDC. The low-voltage load control terminal 21 can distribute power to the corresponding low-voltage load 22 by controlling the switch K to be closed and opened, that is, the low-voltage load control terminal 21 can realize point-to-point control to distribute power to the low-voltage load 22.
[0039] Of course, in other embodiments of the present disclosure, when the vehicle enters the first mode, the battery pack 11 may also directly supply power to the low-voltage load 22 via the main converter DCDC. When the vehicle enters the second mode, the battery pack 11 may also directly supply power to the low-voltage load 22 via the first converter MDCDC. The low-voltage load 22 includes an electronic control unit and an actuator, etc., which will not be described in detail in this disclosure.
[0040] Continue to refer Figure 1 In some optional embodiments, the main converter DCDC is configured to output a first voltage to the load module 20 in the first mode;
[0041] The first converter MDCDC is configured to output a second voltage to the load module 20 in the second mode, where the second voltage is lower than the first voltage.
[0042] Specifically, when the vehicle enters the first mode, the main relay R1 is closed, the first relay R2 is disconnected, the battery pack 11 outputs a high voltage to the main converter DCDC side, and the main converter DCDC converts the high voltage electricity into a first voltage to power the load module 20 and the high voltage system of the entire vehicle. When the vehicle enters the second mode, the first relay R2 is closed, the main relay R1 is disconnected, the battery pack 11 outputs a high voltage to the first converter MDCDC side, and the first converter MDCDC converts the high voltage electricity into a second voltage to power the load module 20. The first voltage is greater than the second voltage, so that when the vehicle enters the first mode, the battery pack 11 can supply power to the high voltage system of the entire vehicle through the main converter DCDC. For example, the first voltage is 14.2V and the second voltage is 13.5V. Continue to refer to Figure 1 and Figure 2 In some optional embodiments, the power supply system further includes a battery 30 , which is connected to the first converter MDCDC and the load module 20 .
[0043] Specifically, the power supply system also includes a battery 30. When the vehicle enters the first mode, the battery 30 serves as a backup battery. When the first converter MDCDC is briefly overloaded, the first converter MDCDC and the battery 30 can discharge at the same time, completely avoiding the risk of battery 30 running out of power due to long-term parking of the vehicle.
[0044] Because battery 30 serves as a backup battery, a smaller capacity battery can be used. For example, a 12 Ah battery can be used. This allows battery 30 to serve as a backup power source when the power of first converter MDCDC is insufficient. Compared to conventional batteries, battery 30 in this embodiment has a smaller capacity and lower cost.
[0045] Optionally, the first voltage is greater than the second voltage, and the voltage output by the battery 30 when fully charged is less than the first voltage. This allows the battery pack 11 to output a high voltage to the main converter DCDC side when the vehicle enters the first mode. The main converter DCDC converts the high voltage into the first voltage, which is also used to power the battery 30. Simultaneously, the voltage output by the battery 30 when fully charged is greater than the second voltage. Therefore, when the vehicle enters the second mode, after the battery 30 supplies power to the load module 20 and the voltage output by the battery 30 equals the second voltage, power is primarily supplied to the load module 20 via the battery pack 11 via the first converter MDCDC. There is no need to supply power to the load module 20 through the battery 30, and the battery pack 11 does not supply power to the load module 20. This helps reduce the number of charge and discharge cycles of the battery 30 and improves the service life of the battery 30.
[0046] In the prior art, when a vehicle enters sleep mode, the battery, which serves as the vehicle's power source, must continuously charge and discharge. This will accelerate the battery's charge and discharge cycles and reduce its capacity. Furthermore, the battery charge must be regularly checked. If the vehicle experiences abnormal power consumption between scheduled checks, the battery charge will be rapidly depleted, leaving the vehicle power-depleted and unable to start. Furthermore, in the prior art, the battery must be charged via the main converter, which will wake up the vehicle's high-voltage system and result in high energy consumption. Testing has shown that when the battery is charged via the main converter, the average current of the vehicle is no less than 30A, and the vehicle's low-voltage power consumption is 400W.
[0047] In the embodiment of the present disclosure, when the vehicle enters the second mode, the first relay R2 is closed and the main relay R1 is disconnected. The battery pack 11 outputs a high voltage to the first converter MDCDC side. The first converter MDCDC converts the high voltage into a second voltage to power the load module 20. The battery 30 does not need to be charged or discharged all the time. It is only designed as a redundant power supply, which greatly reduces the number of charge and discharge times of the battery 30 and helps to increase the life of the battery 30. There is no need to detect the battery power, which effectively reduces energy consumption. At the same time, when the battery pack 11 charges the battery 30 through the first converter MDCDC, there is no need to wake up the high-voltage system of the entire vehicle, which effectively saves energy. After testing, when the battery pack 11 charges the battery 30 through the first converter MDCDC, the power consumption of the entire vehicle is 30mA, and the low-voltage power consumption of the entire vehicle is less than 0.4W, which greatly saves energy.
[0048] Continue to refer Figure 1 and Figure 2 , in some optional embodiments,
[0049] In the second mode, the battery 30 is configured to output voltage to the load module 20 in a first time period, and the battery pack 11 is configured to output voltage to the load module 20 via the first converter MDCDC in a second time period, wherein the first time period is before the second time period.
[0050] Specifically, when the vehicle enters the second mode, the main relay R1 is disconnected and the first relay R2 is closed. When the voltage output by the battery pack 11 through the first converter MDCDC is lower than the voltage output by the battery 30 when it is fully charged, in the first time period, the battery 30 outputs voltage to the load module 20. When the voltage output by the battery pack 11 through the first converter MDCDC is the same as the voltage output by the battery 30, in the second time period, the first converter MDCDC outputs voltage to the load module 20, thereby ensuring that the battery pack 11 can normally output voltage to the load module 20 through the first converter MDCDC in the second mode.
[0051] For example, the voltage output by the battery pack 11 through the first converter MDCDC is 13.5V, and the voltage output by the battery 30 when fully charged is 13.9V. The battery is first discharged to the same voltage platform as the first converter MDCDC before the first converter MDCDC can have output capability. The state of charge of the battery corresponding to 13.5V is approximately 70%.
[0052] Figure 3 This is a connection principle diagram of the first converter provided by the embodiment of the present disclosure, refer to Figure 1 and Figure 3 In some optional embodiments, the battery pack 10 further includes a controller 12, which is communicatively connected to the main relay R1 and the first relay R2. The controller 12 is configured to control the main relay R1 to close and the first relay R2 to open in the first mode. The controller 12 is also configured to control the first relay R2 to close and the main relay R1 to open in the second mode.
[0053] Specifically, the battery pack 10 also includes a controller 12, which can receive the power mode status of the entire vehicle. In the first mode, the controller 12 controls the main relay R1 to close and controls the first relay R2 to disconnect, thereby enabling the battery pack 11 to supply power to the load module 20 via the main converter DCDC. In the second mode, the controller 12 controls the first relay R2 to close and controls the main relay R1 to disconnect, thereby enabling the battery pack 11 to supply power to the load module 20 via the first converter MDCDC.
[0054] Continue to refer Figure 1 and Figure 3In some optional embodiments, the battery pack 10 further includes a power distribution unit 13 , the main relay R1 and the first relay R2 are integrated into the power distribution unit 13 , and the controller 12 is communicatively connected to the power distribution unit 13 .
[0055] Specifically, the battery pack 10 also includes a power distribution unit 13, the main relay R1 and the first relay R2 are integrated in the power distribution unit 13, the controller 12 is communicated with the power distribution unit 13, and the controller 12 can receive the power mode status of the entire vehicle. In the first mode, the controller 12 controls the main relay R1 to close and controls the first relay R2 to disconnect through the power distribution unit 13, and the battery pack 11 supplies power to the load module 20 via the main converter DCDC. In the second mode, the controller 12 controls the first relay R2 to close and controls the main relay R1 to disconnect through the power distribution unit 13, and the battery pack 11 supplies power to the load module 20 via the first converter MDCDC.
[0056] Continue to refer Figure 1 and Figure 3 In some optional embodiments, the battery pack 10 further includes an input current acquisition circuit 14, an input voltage acquisition circuit 15, an output current acquisition circuit 16, and an output voltage acquisition circuit 17 that are communicatively connected to the controller 12;
[0057] The input current acquisition circuit 14 and the input voltage acquisition circuit 15 are connected to the input end of the first converter MDCDC, and the output current acquisition circuit 16 and the output voltage acquisition circuit 17 are connected to the output end of the first converter MDCDC.
[0058] Specifically, the battery pack 10 also includes an input current acquisition circuit 14, an input voltage acquisition circuit 15, an output current acquisition circuit 16 and an output voltage acquisition circuit 17 that are communicatively connected to the controller 12, wherein the input current acquisition circuit 14 and the input voltage acquisition circuit 15 are connected to the input end of the first converter MDCDC, so that the input current acquisition circuit 14 and the input voltage acquisition circuit 15 can acquire current information and voltage information of the input end of the first converter MDCDC and transmit it to the controller 12, and the output current acquisition circuit 16 and the output voltage acquisition circuit 17 are connected to the output end of the first converter MDCDC, and the output current acquisition circuit 16 and the output voltage acquisition circuit 17 can acquire current information and voltage information of the output end of the first converter MDCDC and transmit it to the controller 12. The controller 12 can detect whether the first converter MDCDC is operating normally based on the current information and voltage information of the input end of the first converter MDCDC and the current information and voltage information of the output end of the first converter MDCDC.
[0059] It should be noted that Figure 3A simple circuit structure of the first converter MDCDC is exemplarily shown in FIG. 1 . In other embodiments of the present disclosure, the first converter MDCDC may also have other circuit structures, which is not specifically limited in the present disclosure.
[0060] The present disclosure provides a vehicle, which includes a power supply system, wherein the power supply system is the power supply system described in the above embodiments. Figure 1 or Figure 3 The description of the power supply system and specific components of the power supply system in the illustrated embodiment also has corresponding beneficial effects, and will not be repeated here to avoid repeated description.
[0061] The above description is merely a preferred embodiment of the present disclosure and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also includes other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned disclosed concepts. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this disclosure.
[0062] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details have been included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.
[0063] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.
[0064] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.
Claims
1. A power supply system, characterized in that: include: A battery pack, comprising a battery pack, a main relay, a first relay, and a first converter, wherein one end of the first relay is connected to the battery pack, and the other end of the first relay is connected to the first converter; a main converter, one end of the main relay being connected to the battery pack, and one end of the main relay being connected to the main converter; The main relay is further configured to be closed in the first mode and opened in the second mode; The first relay is configured to be opened in the first mode and closed in the second mode; In the first mode, the battery pack is used to supply power to the load module via the main converter; In the second mode, the battery pack is used to supply power to the load module via the first converter.
2. The power supply system according to claim 1, characterized in that: The main relay is also used to connect to the high-voltage system of the entire vehicle.
3. The power supply system according to claim 1, wherein: The main converter is configured to output a first voltage to the load module in the first mode; The first converter is configured to output a second voltage to the load module in the second mode, where the second voltage is lower than the first voltage.
4. The power supply system according to claim 1, wherein: The load module includes a low-voltage load control end and multiple low-voltage loads. The low-voltage load control end includes multiple switches. The switches correspond to the low-voltage loads one-to-one. One end of the switch is connected to the main converter and the first converter, and the other end of the switch is connected to the corresponding low-voltage load.
5. The power supply system according to claim 1, wherein: The power supply system further includes a battery, wherein the battery is connected to the first converter and the battery is connected to the load module.
6. The power supply system according to claim 5, characterized in that: In the second mode, the battery is used to output voltage to the load module in a first time period, and the battery pack is used to output voltage to the load module via the first converter in a second time period, wherein the first time period is before the second time period.
7. The power supply system according to claim 1, wherein: The battery pack also includes a controller, which is communicatively connected to the main relay and the first relay. The controller is used to control the main relay to close and the first relay to open in the first mode. The controller is also used to control the first relay to close and the main relay to open in the second mode.
8. The power supply system according to claim 7, characterized in that: The battery pack further includes a power distribution unit, the main relay and the first relay are integrated in the power distribution unit, and the controller is communicatively connected to the power distribution unit.
9. The power supply system according to claim 7, characterized in that: The battery pack further includes an input current acquisition circuit, an input voltage acquisition circuit, an output current acquisition circuit, and an output voltage acquisition circuit that are communicatively connected to the controller; The input current acquisition circuit and the input voltage acquisition circuit are connected to the input end of the first converter, and the output current acquisition circuit and the output voltage acquisition circuit are connected to the output end of the first converter.
10. A vehicle, characterized in that: include: The power supply system according to any one of claims 1 to 9.