A drive system, controller, and new energy vehicle

Abstract

This application provides a drive system, controller, and new energy vehicle, including an external circuit and an internal circuit. The external circuit includes a power supply branch, and the internal circuit includes a first charging branch and a main drive branch. The first charging branch is connected in parallel with the main drive branch, and the positive terminal of the first charging branch is connected to the positive terminal of the power supply branch, while the negative terminal of the first charging branch is connected to the negative terminal of the power supply branch. In this application, the first charging branch and the main drive branch are integrated into the internal circuit, improving the integration of the drive system's internal circuitry. This allows the internal circuitry to both drive the motor and charge the power supply branch, eliminating the need for a separate distribution box for the charging branch and saving costs.

Description

Technical Field

[0001] This application relates to the electrical field, and more particularly to a drive system, controller, and new energy vehicle. Background Technology

[0002] With increasing public concern about energy and environmental issues, the development of new energy electric vehicles is gradually accelerating.

[0003] New energy electric vehicles typically include a drive system. This system usually consists of a charging branch and a main drive branch. The charging branch primarily charges the power source within the drive system, while the main drive branch drives the motor. Current drive systems often employ a separate structure, with the charging branch housed independently. This results in low integration, limited functionality for each module, and the need for complex hardwiring connections. Furthermore, to minimize external interference with the charging branch, a distribution box is usually installed outside the charging circuit, leading to high system costs, a large overall size, and hindering improvements in vehicle efficiency and reliability. Summary of the Invention

[0004] To address the technical problem of high cost of the aforementioned drive system, this application provides a drive system, controller, and new energy vehicle.

[0005] In a first aspect, this application provides a driving system, including: external circuitry and internal circuitry.

[0006] The external circuit includes a power supply branch;

[0007] The internal circuit includes a first charging branch;

[0008] The positive terminal of the first charging branch is connected to the positive terminal of the power supply branch, and the negative terminal of the first charging branch is connected to the negative terminal of the power supply branch.

[0009] The internal circuit also includes a main drive branch connected in parallel with the first charging branch.

[0010] In one possible implementation, the internal circuitry further includes a first switch;

[0011] The first switch is located on the connection line between the negative terminal of the first charging branch and the negative terminal of the power supply branch.

[0012] In one possible implementation, the internal circuitry further includes a first fuse;

[0013] The first fuse is installed on the connection line between the positive terminal of the first charging branch and the positive terminal of the power supply branch.

[0014] In one possible implementation, the first charging branch includes a first charging interface and a second switch;

[0015] The positive terminal of the first charging interface is connected to one end of the second switch, and the other end of the second switch serves as the positive terminal of the first charging branch.

[0016] The negative terminal of the first charging interface serves as the negative terminal of the first charging branch.

[0017] In one possible implementation, the main drive branch includes a motor driver interface and a first pre-charge circuit;

[0018] The input terminal of the first pre-charge circuit serves as the positive terminal of the main drive branch;

[0019] The output terminal of the first pre-charge circuit is connected to the positive terminal of the motor driver interface;

[0020] The negative terminal of the motor driver interface serves as the negative terminal of the main drive branch.

[0021] In one possible implementation, the first pre-charge circuit includes:

[0022] First resistor, first diode, third switch, and fourth switch;

[0023] The first end of the first resistor serves as the input end of the first pre-charge circuit, and the first end of the first resistor can be any one end of the first resistor.

[0024] The second end of the first resistor is connected to the anode of the first diode, and the second end is the other end of the first resistor besides the first end;

[0025] The cathode of the first diode is connected to the first end of the third switch, and the first end of the third switch can be any one of the ends of the third switch;

[0026] The second end of the third switch serves as the output end of the first pre-charging circuit, and the second end of the third switch is the other end of the third switch besides the first end.

[0027] One end of the fourth switch is connected to the first end of the first resistor, and the other end is connected to the second end of the third switch.

[0028] In one possible implementation, the internal circuit further includes an energy storage power supply branch connected in parallel with the first charging branch;

[0029] The energy storage power branch includes a seventh fuse, a voltage converter, and an energy storage battery interface.

[0030] One end of the seventh fuse serves as the positive terminal of the energy storage power supply branch;

[0031] The other end of the seventh fuse is connected to the positive input terminal of the voltage converter;

[0032] The negative input terminal of the voltage converter serves as the negative terminal of the energy storage power supply branch.

[0033] The positive output terminal of the voltage converter is connected to the positive terminal of the energy storage battery interface;

[0034] The negative output terminal of the voltage converter is connected to the negative terminal of the energy storage battery interface.

[0035] In one possible implementation, the internal circuitry further includes a second charging branch;

[0036] The second charging branch includes a second charging interface, an eleventh switch, a twelfth switch, and an eighth fuse;

[0037] The positive terminal of the second charging interface is connected to the positive terminal of the power supply branch through the eleventh switch and the eighth fuse connected in series.

[0038] The negative terminal of the second charging interface is connected to the negative terminal of the power supply branch through the twelfth switch.

[0039] Secondly, embodiments of this application also provide a controller, which includes any of the drive systems described in the first aspect.

[0040] Thirdly, embodiments of this application also provide a new energy vehicle, which includes any of the drive systems described in the first aspect.

[0041] The technical solutions provided in this application have the following advantages compared with the prior art:

[0042] This application provides a drive system including an external circuit and an internal circuit. The external circuit includes a power supply branch, and the internal circuit includes a first charging branch and a main drive branch. The first charging branch is connected in parallel with the main drive branch, and the positive terminal of the first charging branch is connected to the positive terminal of the power supply branch, while the negative terminal of the first charging branch is connected to the negative terminal of the power supply branch. In this application, the first charging branch and the main drive branch are integrated into the internal circuit, improving the integration of the internal circuit of the drive system. This allows the internal circuit to both drive the motor and charge the power supply branch, eliminating the need for a separate distribution box for the charging branch and saving costs. Attached Figure Description

[0043] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of an existing drive system;

[0046] Figure 2 A schematic diagram of a driving system provided in an embodiment of this application;

[0047] Figure 3 A schematic diagram of a driving system provided in an embodiment of this application;

[0048] Figure 4 This is a schematic diagram of an existing drive system;

[0049] Figure 5 A schematic diagram of a driving system provided in an embodiment of this application;

[0050] Figure 6 A schematic diagram of a driving system provided in an embodiment of this application;

[0051] Figure 7 This is a schematic diagram of a driving system provided in an embodiment of this application. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0053] With increasing public concern about energy and environmental issues, the development of new energy electric vehicles is accelerating, and the main motor drive system of new energy vehicles is being widely used. In the practical application of drive systems, OEMs are placing increasingly higher demands on the cost, power density, and reliability of these systems. A drive system mainly consists of an energy supply section (e.g., power supply circuits, charging circuits) and a control section (e.g., main drive circuits, air conditioning control circuits). The energy supply section primarily provides energy (e.g., electrical energy) to the control section, which in turn uses the electrical energy provided by the power supply circuit to control related equipment. Currently, most drive systems on the market adopt a separate structure, separating the energy supply section from the control section. This results in low integration of the drive system, single-function modules, and complex hardwiring connections, leading to high driver prices, large overall size, and hindering the improvement of overall vehicle efficiency and reliability. For example... Figure 1 As shown, existing drive systems typically place the power supply and charging branches in the external circuitry, while the main drive branch and other control branches are placed in the internal circuitry. However, when the drive system is applied to devices such as new energy vehicles, the internal circuitry is integrated inside the new energy vehicle and is not exposed, while the external circuitry is usually exposed outside the new energy vehicle. Since the charging branch is located outside, it is easily affected by external equipment and the environment. Therefore, in order to reduce the impact of external equipment and the environment on the charging branch, existing drive systems usually place the charging branch in a dedicated distribution box. However, this undoubtedly further increases the cost of the drive system.

[0054] To reduce the cost of the drive system, embodiments of this application provide a drive system.

[0055] Figure 2 A schematic diagram of a driving system provided in an embodiment of this application is shown below. Figure 2 The drive system includes two parts: internal circuits and external circuits. Usually, the external circuits and internal circuits are set in different locations. For example, when the drive system is set in a new energy vehicle, the internal circuits are usually set inside the new energy vehicle and are not exposed, while the external circuits are usually exposed outside the new energy vehicle.

[0056] The external circuit includes a power supply branch, which is mainly used to provide power to the control branch in the drive system, such as providing power to the main drive branch.

[0057] The internal circuit includes a first charging branch, the positive terminal of which is connected to the positive terminal of the power supply branch, and the negative terminal of which is connected to the negative terminal of the power supply branch. The first charging branch is mainly used to charge the power supply branch.

[0058] The internal circuit also includes a main drive branch connected in parallel with the first charging branch. The power supply branch supplies power to the main drive branch, which is mainly used to drive the motor through electrical energy.

[0059] The drive system provided in this embodiment integrates the first charging branch and the main drive branch, excluding the power supply branch, into the internal circuit, which improves the integration of the drive system. This allows the internal circuit to both drive the motor and charge the power supply branch. Compared with the existing system that places the charging branch in the external circuit, integrating the charging branch into the internal circuit eliminates the need for a separate distribution box for the charging branch, thus saving costs.

[0060] In existing drive systems, the charging branch typically includes two switches, for example... Figure 4 K shown b 1 and K b 2. The main drive branch circuit is usually also equipped with a switch for controlling power-on, for example... Figure 4 K shown b 4 (Of course, besides the switch, it can also be other devices that can control the power supply of the main drive branch). To reduce interference between the charging branch and the drive branch, a switch is usually installed on the main circuit between the external and internal circuits, for example... Figure 4 K shown b 3, where K b 3 is mainly used to control the power supply of the main drive branch, and has no effect on the charging branch.

[0061] In order to save on the cost of the drive system, this application, based on the above embodiments, such as Figure 3 As shown, the internal circuit of the drive system provided in this application embodiment also includes a first switch (e.g., Figure 3 In the circuit K1, the first switch K1 is set on the connection line (i.e., the main circuit) between the negative terminal of the charging branch and the negative terminal of the power supply branch.

[0062] Because K1 is located on the main line between the first charging branch and the power supply branch, K1 can be used to control the connection between the negative terminal of the first charging branch and the negative terminal of the power supply branch, and it can also be used to control the connection between the negative terminal of the main drive branch and the negative terminal of the power supply branch.

[0063] In existing drive systems, to achieve overcurrent protection for both the charging branch and the main drive branch, fuses are typically installed on the charging branch and the main drive branch respectively. For example... Figure 4 Fb1 and Fb2 are shown.

[0064] Normally, when the drive system is in charging mode, the power supply branch is in energy input mode, and only the charging branch is working. Branches that require power from the power supply branch, such as the main drive branch, are not working. However, when the drive system is in driving mode, the power supply branch is in energy output mode, the charging branch is not working, and branches that require power from the power supply branch, such as the main drive branch, are working.

[0065] This application discovers that, in the driving state, the power of the main drive branch accounts for more than 95% of the total power of the entire driving system. This makes the current of the main drive branch in the driving state very similar to the current of the charging branch in the charging state. Therefore, the parameters of the fuse used for overcurrent protection of the main drive branch are comparable to those of the fuse used for overcurrent protection of the first charging branch. In other words, the main drive branch and the first charging branch can use the same type of fuse. For this reason, the driving branch and the first charging branch in this application use the same fuse. Figure 3 As shown, in one embodiment, the internal circuit of the drive system provided in this application is further provided with a first fuse F1, which is disposed on the connection line (i.e., the main line) between the positive terminal of the charging branch and the positive terminal of the power supply branch.

[0066] Because F1 is set on the main line between the positive terminal of the first charging branch and the positive terminal of the power supply branch, and the main drive branch is connected in parallel with the first charging branch, F1 can provide overcurrent protection for both the first charging branch and the main drive branch.

[0067] In this embodiment, since the first charging branch and the main drive branch use the same fuse (i.e. Figure 3 In the F1 configuration, compared to existing drive systems where the charging branch and main drive branch each use a separate fuse (e.g., F1), this design... Figure 4 As shown in Fb1 and Fb2), this application reduces the use of fuses, thereby reducing costs.

[0068] Based on any of the above embodiments, the first charging branch provided in this application includes a first charging interface and a second switch K2, such as... Figure 3 As shown, the positive terminal of the first charging interface is connected to one end of the second switch K2, the other end of the second switch K2 serves as the positive terminal of the first charging branch, and the negative terminal of the first charging interface serves as the negative terminal of the first charging branch.

[0069] Compared to existing drive systems where the charging branch requires two switches (e.g.) Figure 4 K shown b 1 and K b 2) The first charging branch provided in this application embodiment only needs to be set with one switch K2, which reduces the number of switches between the negative terminal of the first charging interface and the main circuit, thereby reducing the cost of the charging branch.

[0070] In one embodiment, the main drive branch provided in this application includes a motor driver interface and a first pre-charge circuit; the input terminal of the first pre-charge circuit serves as the positive terminal of the main drive branch, the output terminal of the first pre-charge circuit is connected to the positive terminal of the motor driver interface, and the negative terminal of the motor driver interface serves as the negative terminal of the main drive branch.

[0071] In one embodiment, the first pre-charge circuit may include: a first resistor R1, a first diode D1, a third switch K3, and a fourth switch K4, for example... Figure 3 As shown, the first end of the first resistor R1 serves as the input terminal of the first pre-charge circuit, and the first end of the first resistor R1 can be any one of the first resistor R1; the second end of the first resistor R1 is connected to the anode of the first diode D1, and the second end is the other end of the first resistor R1 besides the first end; the cathode of the first diode D1 is connected to the first end of the third switch K3, and the first end of the third switch K3 can be any one of the third switch K3; the second end of the third switch K3 serves as the output terminal of the first pre-charge circuit, and the second end of the third switch K3 is the other end of the third switch besides the first end; one end of the fourth switch K4 is connected to the first end of the first resistor R1, and the other end is connected to the second end of the third switch K3.

[0072] Of course, besides Figure 3 The pre-charge circuit shown can also be used in other ways.

[0073] In this embodiment, setting a pre-charge circuit in the main drive branch can avoid large current surges, thereby protecting the motor driver.

[0074] Based on any of the above embodiments, the internal circuit of the drive system provided in this application may further include a second charging branch, such as... Figure 5 As shown, the second charging branch includes a second charging interface, an eleventh switch K11, a twelfth switch K12, and an eighth fuse F8.

[0075] The positive terminal of the second charging interface is connected to the positive terminal of the power supply branch through the eleventh switch K11 and the eighth fuse F8 connected in series.

[0076] The negative terminal of the second charging interface is connected to the negative terminal of the power supply branch through the twelfth switch K12.

[0077] In this embodiment, setting up two charging branches can speed up the charging rate.

[0078] Based on any of the above embodiments, the internal circuit of the drive system provided in this application may further include an energy storage power supply branch, such as... Figure 6 As shown, the energy storage power supply branch is connected in parallel with the first charging branch;

[0079] The energy storage power branch includes a seventh fuse F7, a voltage converter, and an energy storage battery interface.

[0080] One end of the seventh fuse F7 serves as the positive terminal of the energy storage power supply branch;

[0081] The other end of the seventh fuse F7 is connected to the positive input terminal of the voltage converter;

[0082] The negative input terminal of the voltage converter serves as the negative terminal of the energy storage power supply branch.

[0083] The positive output terminal of the voltage converter is connected to the positive terminal of the energy storage battery interface;

[0084] The negative output terminal of the voltage converter is connected to the negative terminal of the energy storage battery interface.

[0085] In one embodiment, the voltage converter is a step-down voltage converter, and the energy storage battery interface is connected to a low voltage (e.g., 24V).

[0086] In this embodiment, the energy storage battery can be charged by setting up an energy storage battery branch, and the energy storage battery can be used to power external devices.

[0087] Based on any of the above embodiments, such as Figure 7 As shown, the power supply branch provided in this application may include a battery, a fifteenth switch K15 and a sixteenth switch K16, wherein the battery may be a high-voltage battery, such as a 550V battery.

[0088] like Figure 7 As shown, one end of the fifteenth switch K15 serves as the positive terminal of the power supply branch.

[0089] The other end of the fifteenth switch K15 is connected to the positive terminal of the high-voltage battery.

[0090] One end of the sixteenth switch K16 is connected to the negative terminal of the high-voltage battery.

[0091] The other end of the sixteenth switch K16 serves as the negative terminal of the power supply branch.

[0092] The fifteenth switch K15 and the sixteenth switch 16 are linked switches, meaning that K15 and K16 are simultaneously closed and opened.

[0093] Based on any of the above embodiments, the internal circuit of the drive system provided in this application may further include: an air conditioning branch connected in parallel with the first charging branch.

[0094] like Figure 7 As shown, the air conditioning branch includes a sixth switch K6, a second fuse F2, and an air conditioner interface.

[0095] One end of the second fuse F2 serves as the positive terminal of the air conditioning branch.

[0096] The other end of the second fuse F2 is connected to the positive terminal of the air conditioner interface through the sixth switch.

[0097] The negative terminal of the air conditioner interface serves as the negative terminal of the air conditioner branch circuit.

[0098] In this embodiment, the air conditioning branch can be set up to drive the external air conditioner.

[0099] Based on any of the above embodiments, the internal circuit of the drive system provided in this application may further include: a heater branch connected in parallel with the first charging branch.

[0100] like Figure 7 As shown, the heater branch includes a seventh switch K7, a third fuse F3, and a heater interface.

[0101] One end of the third fuse F3 serves as the positive terminal of the heater branch.

[0102] The other end of the third fuse F3 is connected to the positive terminal of the heater interface via the seventh switch K7.

[0103] The negative terminal of the heater interface serves as the negative terminal of the heater branch.

[0104] In this embodiment, the heater branch can drive the system to drive the heater.

[0105] Based on any of the above embodiments, the internal circuit of the drive system provided in this application may further include: a defrosting branch connected in parallel with the first charging branch.

[0106] like Figure 7 As shown, the defrosting machine branch includes an eighth switch K8, a fourth fuse F4, and a defrosting machine interface.

[0107] One end of the fourth fuse F4 serves as the positive terminal of the defrosting machine branch.

[0108] The other end of the fourth fuse F4 is connected to the positive terminal of the defrosting machine interface via the eighth switch K8.

[0109] The negative terminal of the defrost machine interface serves as the negative terminal of the defrost machine branch.

[0110] In this embodiment, the defrosting machine branch can be configured to drive the defrosting machine via a drive system.

[0111] Based on any of the above embodiments, the internal circuit of the drive system provided in this application may further include: a vehicle control branch.

[0112] like Figure 7 As shown, the vehicle control circuit includes a second pre-charge circuit, a fifth fuse F5, a sixth fuse F6, an oil pump interface, and an air pump interface.

[0113] The input terminal of the second pre-charge circuit serves as the positive terminal of the vehicle operation branch.

[0114] The output terminal of the second pre-charge circuit is connected to the positive terminal of the oil pump interface through the fifth fuse F5.

[0115] The output terminal of the second pre-charge circuit is connected to the positive terminal of the air pump interface through the sixth fuse.

[0116] The negative terminal of the oil pump interface is connected to the negative terminal of the air pump interface.

[0117] The negative terminal of the air pump interface serves as the negative terminal of the vehicle operation branch.

[0118] In one embodiment, such as Figure 7 As shown, the second pre-charge circuit may include:

[0119] The second resistor R2, the second diode D2, the ninth switch K9, and the tenth switch K10.

[0120] The first end of the second resistor R2 serves as the input terminal of the second pre-charge circuit, and the first end of the second resistor can be any one of the ends of the second resistor.

[0121] The second end of the second resistor R2 is connected to the anode of the second diode D2, and the second end is the other end of the second resistor R2 besides the first end.

[0122] The cathode of the second diode is connected to the first end of the ninth switch K9, and the first end of the ninth switch K9 can be any one of the ninth switches K9.

[0123] The second end of the ninth switch K9 serves as the output end of the second pre-charge circuit, and the second end of the ninth switch K9 is the other end of the ninth switch K9 besides the first end.

[0124] One end of the tenth switch K10 is connected to the first end of the second resistor R2, and the other end is connected to the second end of the ninth switch K9.

[0125] In this embodiment, setting up a vehicle control branch enables the drive system to drive the vehicle control system.

[0126] Based on any of the above embodiments, the internal circuit of the drive system provided in this application may further include: a battery heating branch.

[0127] like Figure 7 As shown, the battery heating branch includes a battery heater interface, a thirteenth switch K13, and a fourteenth switch K14.

[0128] The positive terminal of the battery heater interface is connected to the positive terminal of the power supply branch through the thirteenth switch K13.

[0129] The negative terminal of the battery heater interface is connected to the negative terminal of the power supply branch through the fourteenth switch K14.

[0130] In this embodiment, the battery heater branch can be set up to drive the battery heater through a drive system, and further, the battery heater can heat the battery in the power supply branch.

[0131] The switch in any of the above embodiments can be an electrically controlled switch, such as a relay.

[0132] In another embodiment of this application, a controller is also provided, which includes the drive system described in any of the above embodiments.

[0133] In another embodiment of this application, a new energy vehicle is also provided, which includes the drive system described in any of the above embodiments.

[0134] The following is based on Figure 7 Taking the aforementioned drive system as an example, the working state of the drive system is described below:

[0135] When the drive system is in charging state, K15, K16, K11, K12, K1 and K2 are all closed, and K13, K14, K3, K4, K5, K6, K7, K8, K9, K10, K13 and K14 are all open.

[0136] When the drive system is in drive mode, different switches are closed depending on the device it is driving. For example, if it is driving an air conditioner, K6 is closed, and if it is driving a defrost machine, K8 is closed, etc. However, K11, K12 and K2 are open when in drive mode, and K1, K15 and K16 remain closed.

[0137] As described above, K1 remains closed when the drive system is on. In addition to connecting the circuit, K1 also serves as a current protection mechanism. K1 is usually a relay, and a relay can only remain closed for a very short time under high current before it opens. After K1 opens, the branches connected in parallel with the first charging branch, such as the air conditioning branch, can no longer work, thus preventing these branches from being impacted by high current.

[0138] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0139] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. 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 invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A drive system, characterized in that, include: External circuits and internal circuits The external circuit includes a power supply branch; The internal circuit includes a first charging branch; The positive terminal of the first charging branch is connected to the positive terminal of the power supply branch, and the negative terminal of the first charging branch is connected to the negative terminal of the power supply branch. The internal circuit also includes a main drive branch connected in parallel with the first charging branch. The internal circuitry is integrated inside the new energy vehicle. The external circuitry is exposed on the exterior of the new energy vehicle. The first charging branch is used to charge the power supply branch. The power supply branch is used to supply power to the main drive branch; The main drive branch is used to drive the motor by electric power. The first charging branch is not equipped with a distribution box; The internal circuit also includes a first fuse, which is disposed on the connection line between the positive terminal of the first charging branch and the positive terminal of the power supply branch. When the drive system is in drive mode, the power supply branch is in energy output mode, the first charging branch is not working, and the main drive branch is working.

2. The drive system according to claim 1, characterized in that, The internal circuit also includes a first switch; The first switch is located on the connection line between the negative terminal of the first charging branch and the negative terminal of the power supply branch.

3. The drive system according to claim 2, characterized in that, The first charging branch includes a first charging interface and a second switch; The positive terminal of the first charging interface is connected to one end of the second switch, and the other end of the second switch serves as the positive terminal of the first charging branch. The negative terminal of the first charging interface serves as the negative terminal of the first charging branch.

4. The drive system according to claim 1, characterized in that, The main drive branch includes a motor driver interface and a first pre-charge circuit; The input terminal of the first pre-charge circuit serves as the positive terminal of the main drive branch; The output terminal of the first pre-charge circuit is connected to the positive terminal of the motor driver interface; The negative terminal of the motor driver interface serves as the negative terminal of the main drive branch.

5. The drive system according to claim 4, characterized in that, The first pre-charge circuit includes: First resistor, first diode, third switch, and fourth switch; The first end of the first resistor serves as the input end of the first pre-charge circuit, and the first end of the first resistor can be any one end of the first resistor. The second end of the first resistor is connected to the anode of the first diode, and the second end is the other end of the first resistor besides the first end; The cathode of the first diode is connected to the first end of the third switch, and the first end of the third switch can be any one of the ends of the third switch; The second end of the third switch serves as the output end of the first pre-charging circuit, and the second end of the third switch is the other end of the third switch besides the first end. One end of the fourth switch is connected to the first end of the first resistor, and the other end is connected to the second end of the third switch.

6. The drive system according to claim 2, characterized in that, The internal circuit also includes: an energy storage power supply branch connected in parallel with the first charging branch; The energy storage power branch includes a seventh fuse, a voltage converter, and an energy storage battery interface. One end of the seventh fuse serves as the positive terminal of the energy storage power supply branch; The other end of the seventh fuse is connected to the positive input terminal of the voltage converter; The negative input terminal of the voltage converter serves as the negative terminal of the energy storage power supply branch. The positive output terminal of the voltage converter is connected to the positive terminal of the energy storage battery interface; The negative output terminal of the voltage converter is connected to the negative terminal of the energy storage battery interface.

7. The drive system according to claim 1, characterized in that, The internal circuit also includes: a second charging branch; The second charging branch includes a second charging interface, an eleventh switch, a twelfth switch, and an eighth fuse; The positive terminal of the second charging interface is connected to the positive terminal of the power supply branch through the eleventh switch and the eighth fuse connected in series. The negative terminal of the second charging interface is connected to the negative terminal of the power supply branch through the twelfth switch.

8. A controller, characterized in that, The controller comprises the drive system according to any one of claims 1-7.

9. A new energy vehicle, characterized in that, The new energy vehicle includes the drive system described in any one of claims 1-7.

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