Battery assembly applied to new energy commercial vehicle and new energy commercial vehicle

Abstract

The utility model discloses a battery assembly applied to a new energy commercial vehicle and the new energy commercial vehicle, and relates to the technical field of new energy. The assembly comprises a power distribution unit, a first battery pack, a second battery pack and a super capacitor. The first battery pack and the second battery pack both comprise a plurality of cells, and the capacity of the first battery pack is smaller than that of the second battery pack. The super capacitor is respectively connected with the first battery pack and the second battery pack and can transmit electric energy between the first battery pack and the second battery pack and balance output voltages of the first battery pack and the second battery pack. The power distribution unit is electrically connected with the first battery pack, the second battery pack and the super capacitor and used for controlling the first battery pack and / or the second battery pack to output electric energy and supply power to the new energy commercial vehicle. Therefore, in the running process of the new energy commercial vehicle, the first battery pack and the second battery pack which supply power to the new energy commercial vehicle can be switched, and the first battery pack and the second battery pack can be combined to supply power to the new energy commercial vehicle.

Description

Technical Field

[0001] This specification relates to the field of new energy technology, and in particular to a battery assembly used in a new energy commercial vehicle and a new energy commercial vehicle. Background Art

[0002] New energy commercial vehicles (NEVs) are typically powered by batteries, hydrogen, or other fuels. With the rapid advancement of battery technology in recent years, these vehicles have become increasingly common. However, battery performance is often susceptible to temperature fluctuations, particularly in low-temperature environments, where it can significantly degrade. This can make NEVs difficult to start in these conditions.

[0003] Prior art solutions utilize two batteries, a primary battery and a secondary battery, each with different capacities, to power new energy commercial vehicles. The secondary battery is then heated independently to improve heating efficiency in low-temperature conditions, as exemplified by publication number CN121140941A. However, due to the secondary battery's relatively small capacity, it cannot power new energy commercial vehicles for extended periods of time. Consequently, the primary and secondary batteries must be switched after the vehicle has been operating for a period of time.

[0004] Obviously, the prior art lacks a solution for switching the main and auxiliary batteries that power the vehicle while maintaining the vehicle's driving state. Summary of the Invention

[0005] This specification provides a battery assembly for use in a new energy commercial vehicle and a new energy commercial vehicle to at least partially solve the above-mentioned problems existing in the prior art.

[0006] This manual adopts the following technical solutions:

[0007] This specification provides a battery assembly for new energy commercial vehicles, including a power distribution unit, a first battery pack, a second battery pack, and a supercapacitor;

[0008] The first battery pack and the second battery pack each include a plurality of battery cells, and the capacity of the first battery pack is smaller than that of the second battery pack;

[0009] The supercapacitor is connected to the first battery group and the second battery group respectively, and can transmit electric energy between the first battery group and the second battery group to balance the output voltage of the first battery group and the second battery group;

[0010] The power distribution unit is electrically connected to the first battery pack, the second battery pack and the supercapacitor, and can obtain the first temperature value and the second temperature value for controlling the first battery pack and / or the second battery pack to output electrical energy to power the new energy commercial vehicle.

[0011] Preferably, the battery assembly used in new energy commercial vehicles further includes a rapid heating unit;

[0012] The rapid heating unit is connected to the supercapacitor and is in close contact with the first battery pack, and can heat the first battery pack based on energy supplied by the supercapacitor.

[0013] Preferably, the battery assembly used in new energy commercial vehicles further includes a circulating heating unit;

[0014] The circulating heating unit is respectively in close contact with the first battery group and the second battery group, and can utilize the residual heat of the first battery group to heat the second battery group.

[0015] Preferably, the first battery pack is in close contact with the second battery pack and is surrounded by the second battery pack.

[0016] Preferably, the new energy commercial vehicle is equipped with a thermal management system and an electric motor, and the thermal management system is in close contact with the electric motor;

[0017] The circulating heating unit is connected to or in close contact with the thermal management system, and can obtain waste heat generated by the motor during operation, and is used to heat the second battery pack using the waste heat.

[0018] Preferably, the first battery pack further includes a first thermometer, and the first thermometer can collect a first temperature value of the first battery pack;

[0019] The second battery pack further includes a second thermometer, which can collect a second temperature value of the second battery pack;

[0020] The power distribution unit can obtain the first temperature value and the second temperature value, and can send a rapid heating instruction to the rapid heating unit to instruct the rapid heating unit to heat the first battery group, and can send a circulation heating instruction to the circulation heating unit to instruct the circulation heating unit to heat the second battery group.

[0021] Preferably, the number of the first thermostats is the same as the number of the battery cells in the first battery pack, and the first thermostats correspond to the battery cells in the first battery pack one by one and are in close contact with each other;

[0022] The number of the second thermostats is the same as the number of the battery cells in the second battery pack, and the second thermostats correspond to the battery cells in the second battery pack one by one and are in close contact with each other.

[0023] Preferably, the number of battery cells in the first battery pack is less than a preset number threshold, and the rapid heating unit is adjacent to each battery cell in the first battery pack, so that multiple battery cells in the first battery pack can be heated to the first temperature value greater than the first preset temperature within a preset time threshold.

[0024] Preferably, the power distribution unit can switch between supplying energy to the new energy commercial vehicle based on the first battery pack, supplying energy to the new energy commercial vehicle based on the second battery pack, and supplying energy to the new energy commercial vehicle based on the first battery pack and the second battery pack.

[0025] On the other hand, this specification provides a new energy commercial vehicle, which includes the battery assembly for new energy commercial vehicles provided in the above aspect.

[0026] At least one of the above technical solutions adopted in this specification can achieve the following beneficial effects:

[0027] According to the above content, the battery assembly applied to the new energy commercial vehicle includes a power distribution unit, a first battery pack, a second battery pack and a supercapacitor. Among them, the first battery pack and the second battery pack each include multiple battery cells. The supercapacitor is connected to the first battery pack and the second battery pack respectively, and can transmit electrical energy between the first battery pack and the second battery pack, balancing the output voltage of the first battery pack and the second battery pack. The power distribution unit is electrically connected to the first battery pack, the second battery pack and the supercapacitor, and can control the output of electrical energy of the first battery pack and / or the second battery pack to power the new energy commercial vehicle.

[0028] It can be seen from the above content that the supercapacitor can transmit electrical energy between the first battery pack and the second battery pack, thereby balancing the output voltages of the first battery pack and the second battery pack, so that the new energy commercial vehicle can switch between the first battery pack and the second battery pack that supply power to it during driving, or the first battery pack and the second battery pack can jointly power the new energy commercial vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of this specification and constitute a part of this specification. The exemplary embodiments and descriptions of this specification are used to explain this specification and do not constitute an improper limitation of this specification. In the drawings:

[0030] Figure 1 This specification provides a schematic diagram of the battery assembly architecture for new energy commercial vehicles.

[0031] Figure 2A schematic diagram of a portion of the structure of a battery assembly for a new energy commercial vehicle provided in accordance with one embodiment of this specification;

[0032] Figure 3 A cross-sectional schematic diagram of a battery assembly for a new energy commercial vehicle provided in accordance with one embodiment of this specification;

[0033] Figure 4 This manual provides a schematic diagram of the architecture of the battery assembly used in new energy commercial vehicles.

[0034] Description of reference numerals:

[0035] First battery pack 1; second battery pack 2; supercapacitor 3; power distribution unit 4; rapid heating unit 5; circulation heating unit 6; first thermostat 11; second thermostat 21 DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of this specification more clear, the technical solutions of this specification will be clearly and completely described below in conjunction with the specific embodiments of this specification and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0037] In the description of the present invention, it should be noted that the term "or" is generally used in a sense including "and / or", unless the content clearly indicates otherwise.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. Furthermore, in the description of this application, the terms "second," "first," etc. are used solely for purposes of distinction and should not be construed as indicating or implying relative importance.

[0039] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] The technical solutions provided by the embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0041] Figure 1 This manual provides a schematic diagram of the battery assembly architecture used in new energy commercial vehicles. Figure 1 As shown, the first battery pack 1 , the second battery pack 2 and the supercapacitor 3 are all connected to the power distribution unit 4 .

[0042] Preferably, the battery assembly used in new energy commercial vehicles includes a power distribution unit 4 , a first battery pack 1 , a second battery pack 2 , and a supercapacitor 3 .

[0043] Preferably, the first battery pack 1 includes a first thermometer 11 and a plurality of battery cells.

[0044] Preferably, the first thermometer 11 can collect the first temperature value of the first battery pack 1 .

[0045] Preferably, there are multiple first thermostats 11 , and the multiple first thermostats 11 are respectively configured at different positions in the first battery pack 1 .

[0046] Preferably, the number of the first thermostats 11 is the same as the number of the battery cells. The first thermostats 11 correspond to the battery cells one by one, and each first thermostat 11 is in close contact with its corresponding battery cell.

[0047] Preferably, the second battery pack 2 includes a second thermostat 21 and a plurality of battery cells.

[0048] Preferably, the second thermometer 21 can collect the second temperature value of the second battery pack 2 .

[0049] Preferably, there are multiple second thermostats 21 , and the multiple second thermostats 21 are respectively configured at different positions in the second battery pack 2 .

[0050] Preferably, the number of the second thermostats 21 is the same as the number of the battery cells. The second thermostats 21 correspond to the battery cells one by one, and each second thermostat 21 is in close contact with its corresponding battery cell.

[0051] Preferably, the capacity of the first battery pack 1 is smaller than that of the second battery pack 2 , that is, the capacity and / or the number of battery cells and / or the volume of the first battery pack 1 are smaller than those of the second battery pack 2 .

[0052] Those skilled in the art will understand that the technologies related to thermostats and battery cells have been developed to a relatively mature level. This specification does not limit the specific models of the second thermostat 21, the first thermostat 11, and the battery cell. Any commonly used related components in this field can be used.

[0053] Preferably, the supercapacitor 3 is connected to the first battery pack 1 and the second battery pack 2, respectively. It should be noted that the connection here includes direct connection and indirect connection. That is, the supercapacitor 3 can be directly connected to the first battery pack 1 and the second battery pack 2, respectively, or can be indirectly connected to the first battery pack 1 and the second battery pack 2 through the power distribution unit 4.

[0054] In one or more embodiments of the present specification, when the second battery pack 2 is in a low-temperature environment with a temperature lower than the second preset temperature, the battery assembly applied to the new energy commercial vehicle preferentially uses the first battery pack 1 to power the new energy commercial vehicle, and when the temperature of the second battery pack 2 is higher than the first preset temperature, the new energy commercial vehicle can be powered by the first battery pack 1 and / or the second battery pack 2.

[0055] Therefore, in one or more preferred embodiments provided in this specification, the supercapacitor 3 can transmit electrical energy between the first battery pack 1 and the second battery pack 2, balancing the output voltages of the first battery pack 1 and the second battery pack 2. This ensures that when the first battery pack 1 and the second battery pack 2 are connected and jointly outputting electrical energy, the first battery pack 1 does not charge the second battery pack 2, thereby ensuring the power supply to the new energy commercial vehicle.

[0056] Preferably, the output voltage is a potential difference, that is, a potential difference between the first battery group 1 or the second battery group 2 and the ground.

[0057] Preferably, the supercapacitor 3 is capable of transmitting electrical energy between the first battery pack 1 and the second battery pack 2, balancing the output voltages of the first battery pack 1 and the second battery pack 2, and ensuring that the difference between the output voltages of the first battery pack 1 and the second battery pack 2 is within a preset safe potential difference range. For example, after balancing by the supercapacitor 3, the output voltage of the first battery pack 1 is 380V, and the output voltage of the second battery pack 2 is 390V, with a difference of 10V between the two, which is within the safe potential difference range of [-20, 20].

[0058] Preferably, the capacity of the supercapacitor 3 is greater than a preset minimum capacity value, which may be 10 farads (F), 50F, 200F, or the like.

[0059] Preferably, the power distribution unit 4 is electrically connected to the first battery pack 1 and the second battery pack 2 respectively.

[0060] Preferably, the power distribution unit 4 is also electrically connected to the supercapacitor 3, so that the first battery group 1 and the second battery group 2 can be directly or indirectly connected to the supercapacitor 3 through the power distribution unit 4. Furthermore, the supercapacitor 3 can transmit electrical energy between the first battery group 1 and the second battery group 2, thereby balancing the output voltage and / or remaining power of the first battery group 1 and the second battery group 2.

[0061] According to the above content, the battery assembly applied to the new energy commercial vehicle includes a power distribution unit 4, a first battery pack 1, a second battery pack 2 and a supercapacitor 3. Among them, the first battery pack 1 and the second battery pack 2 each include a plurality of battery cells. The supercapacitor 3 is connected to the first battery pack 1 and the second battery pack 2 respectively, and can transmit electrical energy between the first battery pack 1 and the second battery pack 2, and balance the output voltage of the first battery pack 1 and the second battery pack 2. The power distribution unit 4 is electrically connected to the first battery pack 1, the second battery pack 2 and the supercapacitor 3, and can obtain the first temperature value and the second temperature value for controlling the output of electrical energy by the first battery pack 1 and / or the second battery pack 2 to supply power to the new energy commercial vehicle.

[0062] It can be seen from the above content that the supercapacitor 3 can transmit electrical energy between the first battery group 1 and the second battery group 2, thereby balancing the output voltages of the first battery group 1 and the second battery group 2, so that the new energy commercial vehicle can switch between the first battery group 1 and the second battery group 2 to supply power to it during driving, or the first battery group 1 and the second battery group 2 can jointly supply power to the new energy commercial vehicle.

[0063] Preferably, the battery assembly used in new energy commercial vehicles further includes a rapid heating unit 5 and a circulating heating unit 6 .

[0064] Preferably, the circulating heating unit 6 is in close contact with the first battery group 1 and the second battery group 2 respectively, and can utilize the residual heat of the first battery group 1 to heat the second battery group 2.

[0065] Figure 2 This is a partial structural diagram of a battery assembly for a new energy commercial vehicle provided in one embodiment of this specification. Figure 2 As shown, the first battery group 1 is surrounded by the second battery group 2 , and the circulating heating unit 6 is in close contact with both the first battery group 1 and the second battery group 2 .

[0066] Preferably, the circulating heating unit 6 is equipped with a circulating pipeline and a circulating pump, and the circulating pipeline is filled with a heat-conducting liquid. Of course, the circulating heating unit 6 can also be other structures, and this specification does not limit it here.

[0067] Preferably, the rapid heating unit 5 is connected to the supercapacitor 3 .

[0068] Preferably, the rapid heating unit 5 is in close contact with the second battery pack 2 .

[0069] Preferably, the rapid heating unit 5 can heat the second battery pack 2 based on the energy supplied by the supercapacitor 3 .

[0070] Preferably, the rapid heating unit 5 includes a heating plate, a heating film or a thin film resistor, etc., which can release heat when powered. This specification does not limit the specific structure of the rapid heating unit 5.

[0071] Preferably, the power distribution unit 4 is communicatively connected to the first thermostat 11 and the second thermostat 21 respectively.

[0072] Preferably, the power distribution unit 4 is capable of acquiring the first temperature value and the second temperature value.

[0073] Preferably, the power distribution unit 4 is capable of obtaining a plurality of the first temperature values ​​and a plurality of the second temperature values.

[0074] Preferably, the power distribution unit 4 is also communicatively connected to the rapid heating unit 5 and the circulating heating unit 6 respectively.

[0075] Preferably, the power distribution unit 4 can also determine whether to start the rapid heating unit 5 or the circulating heating unit 6 based on the first temperature value and the second temperature value, so as to heat the first battery group 1 and the second battery group 2.

[0076] Preferably, the power distribution unit 4 can also determine whether to supply power to the new energy commercial vehicle through the first battery pack 1 and / or the second battery pack 2 based on the first temperature value and the second temperature value.

[0077] Preferably, the power distribution unit 4 is used to send a rapid heating instruction to the rapid heating unit 5 when determining to heat the second battery pack 2, instructing the rapid heating unit 5 to heat the second battery pack 2 under the power supply of the supercapacitor 3.

[0078] Preferably, the power distribution unit 4 is configured to send a cyclic heating instruction to the cyclic heating unit 6 when determining to heat the first battery pack 1 , instructing the cyclic heating unit 6 to heat the second battery pack 2 .

[0079] In a preferred embodiment provided in this specification, the supercapacitor 3 , the second battery pack 2 , and the first battery pack 1 can all be charged through the power distribution unit 4 .

[0080] Preferably, the new energy commercial vehicle is equipped with a charging port, and the distribution unit 4 is electrically connected to the charging port, capable of obtaining the electric energy transmitted by the charging port and transmitting the electric energy to the second battery group 2 and / or the first battery group 1, thereby charging the supercapacitor 3 and / or the second battery group 2 and / or the first battery group 1.

[0081] Preferably, the power distribution unit 4 can only transmit electric energy to the second battery group 2, and only charge the second battery group 2; it can also only transmit electric energy to the first battery group 1, and only charge the first battery group 1; it can also only transmit electric energy to the supercapacitor 3, and only charge the supercapacitor 3; it can also transmit the electric energy to the supercapacitor 3, the second battery group 2 and the first battery group 1, and charge the second battery group 2 and the first battery group 1 at the same time.

[0082] Preferably, the new energy commercial vehicle is equipped with a vehicle control center.

[0083] Preferably, the power distribution unit 4 is communicatively connected to the vehicle control center, can receive a vehicle start signal sent by the vehicle control center, and can execute a preset program in response to the vehicle start signal.

[0084] Preferably, the preset program at least includes the quick start method for a new energy commercial vehicle provided in another embodiment of this specification.

[0085] Preferably, the first battery pack 1 is in close contact with the second battery pack 2 and is surrounded by the second battery pack 2, as shown in FIG. Figure 2 shown.

[0086] Preferably, the new energy commercial vehicle is equipped with a thermal management system and an electric motor, and the thermal management system is in close contact with the electric motor. This specification does not limit the specific structure of the thermal management system and the electric motor.

[0087] Preferably, the thermal management system is capable of capturing waste heat generated by the motor during operation.

[0088] Preferably, the circulating heating unit 6 is connected to or in close contact with the thermal management system, and can obtain waste heat generated by the motor during operation, and use the waste heat to heat the second battery pack 2.

[0089] Preferably, the supercapacitor 3 is also directly and / or indirectly connected to the electric motor.

[0090] Preferably, the supercapacitor 3 can recover the electric energy consumed by the electric motor during operation during normal driving of the new energy commercial vehicle.

[0091] Preferably, the supercapacitor 3 can be charged while the power distribution unit 4 supplies power to the new energy commercial vehicle through the first battery pack 1 and / or the second battery pack 2 .

[0092] Preferably, the power distribution unit 4 can switch between supplying energy to the new energy commercial vehicle based on the first battery pack 1, supplying energy to the new energy commercial vehicle based on the second battery pack 2, and supplying energy to the new energy commercial vehicle based on the first battery pack 1 and the second battery pack 2.

[0093] Figure 3 The cross-sectional diagram of a battery assembly for a new energy commercial vehicle provided in one embodiment of this specification is shown. Figure 3 As shown, the supercapacitor 3 is arranged on the surface of the battery pack and is connected to the power distribution unit 4 through a pipeline. The first battery group 1 and the second battery group 2 are arranged inside the battery pack.

[0094] Figure 4 This manual provides a schematic diagram of the battery assembly architecture used in new energy commercial vehicles. Figure 4 As shown, the first battery pack 1, the second battery pack 2, and the supercapacitor 3 are all connected to the power distribution unit 4, the rapid heating unit 5 is closely attached to the first battery pack 1, and the circulating heating unit 6 is closely attached to both the first battery pack 1 and the second battery pack 2. In addition, a first temperature controller 11 is provided in the first battery pack 1, and a second temperature controller 21 is provided in the second battery pack 2.

[0095] The above are battery assemblies for new energy commercial vehicles provided in one or more embodiments of this specification. Based on the same idea, this specification also provides corresponding new energy commercial vehicles.

[0096] Preferably, the new energy commercial vehicle includes the battery assembly for new energy commercial vehicles provided by any one of the aforementioned embodiments.

[0097] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0098] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0099] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of this application.

Claims

1. A battery assembly for new energy commercial vehicles, characterized in that: comprising a power distribution unit, a first battery pack, a second battery pack, and a supercapacitor; The first battery pack and the second battery pack each include a plurality of battery cells, and the capacity of the first battery pack is smaller than that of the second battery pack; The supercapacitor is connected to the first battery group and the second battery group respectively, and can transmit electric energy between the first battery group and the second battery group to balance the output voltage of the first battery group and the second battery group; The power distribution unit is electrically connected to the first battery pack, the second battery pack and the supercapacitor, and is used to control the first battery pack and / or the second battery pack to output electrical energy to supply power to the new energy commercial vehicle.

2. The battery assembly for new energy commercial vehicles according to claim 1, characterized in that: The battery assembly used in new energy commercial vehicles also includes a rapid heating unit; The rapid heating unit is connected to the supercapacitor and is in close contact with the first battery pack, and can heat the first battery pack based on energy supplied by the supercapacitor.

3. The battery assembly for new energy commercial vehicles according to claim 2, characterized in that: The battery assembly used in new energy commercial vehicles also includes a circulation heating unit; The circulating heating unit is respectively in close contact with the first battery group and the second battery group, and can utilize the residual heat of the first battery group to heat the second battery group.

4. The battery assembly for new energy commercial vehicles according to claim 3, characterized in that: The first battery group is closely attached to the second battery group and is surrounded by the second battery group.

5. The battery assembly for new energy commercial vehicles according to claim 3, characterized in that: The new energy commercial vehicle is equipped with a thermal management system and an electric motor, and the thermal management system is in close contact with the electric motor; The circulating heating unit is connected to or in close contact with the thermal management system, and can obtain waste heat generated by the motor during operation, and is used to heat the second battery pack using the waste heat.

6. The battery assembly for new energy commercial vehicles according to claim 3, characterized in that: The first battery pack further includes a first thermometer, which can collect a first temperature value of the first battery pack; The second battery pack further includes a second thermometer, which can collect a second temperature value of the second battery pack; The power distribution unit can obtain the first temperature value and the second temperature value, and can send a rapid heating instruction to the rapid heating unit to instruct the rapid heating unit to heat the first battery group, and can send a circulation heating instruction to the circulation heating unit to instruct the circulation heating unit to heat the second battery group.

7. The battery assembly for new energy commercial vehicles according to claim 6, characterized in that: The number of the first thermostats is the same as the number of the battery cells in the first battery pack, and the first thermostats correspond to the battery cells in the first battery pack one by one and are in close contact with each other; The number of the second thermostats is the same as the number of the battery cells in the second battery pack, and the second thermostats correspond to the battery cells in the second battery pack one by one and are in close contact with each other.

8. The battery assembly for new energy commercial vehicles according to claim 6, characterized in that: The number of battery cells in the first battery pack is less than a preset number threshold, and the rapid heating unit is adjacent to each battery cell in the first battery pack, so that multiple battery cells in the first battery pack can be heated to the first temperature value greater than the first preset temperature within a preset time threshold.

9. The battery assembly for new energy commercial vehicles according to any one of claims 1 to 6, characterized in that: The power distribution unit can switch between supplying energy to the new energy commercial vehicle based on the first battery pack, supplying energy to the new energy commercial vehicle based on the second battery pack, and supplying energy to the new energy commercial vehicle based on the first battery pack and the second battery pack.

10. A new energy commercial vehicle, characterized in that: The new energy commercial vehicle includes the battery assembly for new energy commercial vehicles according to any one of claims 1 to 9.

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