Power battery packs and vehicles

Abstract

This utility model discloses a power battery pack and a vehicle. The power battery pack includes: a frame; a power battery disposed within the frame; and a thermal management system disposed within the frame, which can exchange heat with the power battery. By integrating the thermal management system within the frame, the thermal management system can better exchange heat with the power battery. Secondly, it can achieve a balanced axle load distribution and a lower center of gravity, solving the problem of front-heavy weight distribution and improving vehicle stability and safety. Furthermore, it allows for a highly integrated chassis layout, increasing the vehicle's front turning radius and maximizing vehicle volume.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a power battery pack and a vehicle. Background Technology

[0002] In related technologies, the power battery pack is often arranged in a rear-mounted configuration, that is, it is located behind the cab. The thermal management system modules are arranged around the power battery pack. This arrangement requires little modification to the chassis and can keep the sides of the frame clean, making it convenient for users to add toolboxes and other auxiliary equipment later.

[0003] However, existing power battery packs also have significant drawbacks: the power battery pack adopts a rear-mounted arrangement, which affects the vehicle's front turning radius, encroaches on the vehicle's size, and causes the vehicle's center of gravity to be too high. When driving on bumpy roads, it is easy to cause the vehicle to be front-heavy and unbalanced, which will affect the stability and safety of handling. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a power battery pack that enables highly integrated chassis layout, increases the vehicle's front turning radius, and maximizes the vehicle's volume.

[0005] This utility model further proposes a vehicle.

[0006] The power battery pack according to this utility model includes: a frame; a power battery disposed within the frame; and a thermal management system disposed within the frame, the thermal management system being capable of exchanging heat with the power battery.

[0007] According to the power battery pack of this utility model, by integrating the thermal management system into the frame, the thermal management system can better exchange heat with the power battery. Secondly, it can achieve balanced axle load distribution and a lower center of gravity, which can solve the problem of front-heavy and bottom-light, and improve the stability and safety of the vehicle. In addition, it can achieve high-integration of the chassis, which can increase the vehicle's front turning radius and ensure the maximum volume of the vehicle.

[0008] In some examples of this utility model, the thermal management system includes an air conditioning compressor, a plate heat exchanger, and a water pump, wherein the air conditioning compressor, the plate heat exchanger, and the water pump are all located on the side of the power battery facing the inside of the vehicle frame.

[0009] In some examples of this utility model, the power battery pack further includes a battery thermal management water tank and a motor thermal management water tank, both of which are disposed within the frame and are located on the front side of the power battery.

[0010] In some examples of this utility model, the internal space of the frame is divided into a bottom layer, a middle layer and a top layer in the direction from bottom to top, the power battery is disposed in the bottom layer and the thermal management system is disposed in the middle layer.

[0011] In some examples of this utility model, the power battery pack further includes a high-voltage wiring harness disposed in the intermediate layer.

[0012] In some examples of this utility model, the power battery pack further includes a PEU module, which is disposed on the left side of the top layer.

[0013] In some examples of this utility model, the power battery pack further includes a low-voltage storage battery, which is disposed on the right side of the top layer.

[0014] In some examples of this utility model, the power battery pack further includes: a power distribution box, which is disposed on the right side of the top layer, and the power distribution box is spaced apart from the low-voltage battery.

[0015] The vehicle according to this utility model includes: the power battery pack described above.

[0016] In some examples of this utility model, the vehicle further includes a frame, with the power battery pack disposed on the right side of the frame.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a first structural schematic diagram of a power battery pack according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the second structure of the power battery pack according to an embodiment of the present utility model.

[0019] Figure label: 1. Power battery pack; 10. Frame; 20. Power battery; 30. Thermal management system; 300. Air conditioning compressor; 301. Plate heat exchanger; 302. Water pump; 40. PEU module; 50. Low-voltage battery; 60. Battery thermal management water tank; 70. Motor thermal management water tank. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0021] The following is for reference. Figure 1 and Figure 2 Description of a power battery pack 1 according to an embodiment of the present utility model.

[0022] like Figure 1 and Figure 2 As shown, the power battery pack 1 according to an embodiment of the present invention includes: a frame 10, a power battery 20, and a thermal management system 30. The frame 10 can protect the power battery 20 and components inside the power battery pack 1 from external impacts such as collisions, vibrations, and compression. The power battery 20 can store energy, and the thermal management system 30 can exchange heat for the power battery 20, thus ensuring that the power battery pack 1 operates efficiently, safely, and for a long life.

[0023] like Figure 1 and Figure 2 As shown, the power battery 20 is housed within the frame 10, and the thermal management system 30 is also housed within the frame 10. The thermal management system 30 can exchange heat with the power battery 20. The power battery 20 can be housed within the frame 10, which protects the power battery 20 from external impacts such as collisions, vibrations, and compression. The thermal management system 30 can exchange heat with the power battery 20; that is, the thermal management system 30 can dissipate heat and heat the power battery 20. When the temperature of the power battery 20 is too high, the thermal management system 30 carries away the excess heat generated by the power battery 20 and transfers it to the external environment or the vehicle's cooling system. When the temperature of the power battery 20 is too low, the thermal management system 30 transfers heat to the power battery 20, raising its temperature to a suitable operating range. This allows for precise temperature control of the power battery 20, thereby ensuring the efficient, safe, and long-life operation of the power battery pack 1.

[0024] Therefore, by integrating the thermal management system 30 into the frame 10, the thermal management system 30 can better exchange heat with the power battery 20. Secondly, it can achieve balanced axle load distribution and a lower center of gravity, which can solve the problem of front-heavy and bottom-light, improve the stability and safety of the vehicle. In addition, it can achieve high-level integration of the chassis, which can increase the vehicle's front turning radius and ensure the maximum volume of the vehicle.

[0025] Specifically, such as Figure 2 As shown, the thermal management system 30 includes an air conditioning compressor 300, a plate heat exchanger 301, and a water pump 302. The air conditioning compressor 300, the plate heat exchanger 301, and the water pump 302 are all located on the side of the power battery 20 facing the inside of the vehicle frame. It should be noted that the air conditioning compressor 300, plate heat exchanger 301, and water pump 302 are components of the thermal management system 30. The air conditioning compressor 300 can compress the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gas, providing power for the entire refrigeration cycle. The plate heat exchanger 301 can exchange heat through the flow of two different fluids in adjacent channels. In liquid-cooled or liquid-heated systems, the water pump 302 can push the coolant through the cooling plates or pipes near the power battery 20, continuously removing heat or transferring heat to the power battery 20. The air conditioning compressor 300, plate heat exchanger 301, and water pump 302 are all located on the side of the power battery 20 facing the inner side of the vehicle frame. This arrangement of the air conditioning compressor 300, plate heat exchanger 301, and water pump 302 is more reasonable and makes the thermal management system 30 more stable. This can improve the integration of the power battery pack 1. In addition, the air conditioning compressor 300, plate heat exchanger 301 and water pump 302 can exchange heat with the power battery 20. That is to say, the air conditioning compressor 300, plate heat exchanger 301 and water pump 302 can dissipate heat and heat the power battery 20. When the temperature of the power battery 20 is too high, the air conditioning compressor 300, plate heat exchanger 301 and water pump 302 will carry away the excess heat generated by the power battery 20 and transfer it to the external environment or the vehicle's cooling system. When the temperature of the power battery 20 is too low, the air conditioning compressor 300, plate heat exchanger 301 and water pump 302 will transfer heat to the power battery 20 to raise its temperature to a suitable operating temperature range. The temperature of the power battery 20 can be precisely controlled, thereby ensuring the efficient, safe and long-life operation of the power battery pack 1.

[0026] The power battery pack 1 also includes a battery thermal management water tank 60 and a motor thermal management water tank 70. Both the battery thermal management water tank 60 and the motor thermal management water tank 70 are located within the frame 10, and both are located on the front side of the power battery 20. The battery thermal management water tank 60 serves as a dedicated expansion tank for the cooling circuit of the power battery 20. It can store the coolant in this circuit and absorb or release coolant when the system temperature changes. The motor thermal management water tank 70 is an expansion tank for the cooling circuit of the drive motor and electronic control system. It can accommodate the volume change of the coolant in this circuit and realize venting and replenishment. Both the battery thermal management water tank 60 and the motor thermal management water tank 70 are set inside the frame 10. At this time, the frame 10 can protect the battery thermal management water tank 60 and the motor thermal management water tank 70 inside the power battery pack 1 from external impacts such as collisions, vibrations and compression. Both the battery thermal management water tank 60 and the motor thermal management water tank 70 are located on the front side of the power battery 20. This arrangement of the battery thermal management water tank 60 and the motor thermal management water tank 70 is more reasonable and can make the arrangement of the battery thermal management water tank 60 and the motor thermal management water tank 70 more stable, thereby improving the integration of the power battery pack 1.

[0027] Furthermore, from bottom to top, the internal space of the frame 10 is divided into a bottom layer, a middle layer, and a top layer. The power battery 20 is located in the bottom layer, and the thermal management system 30 is located in the middle layer. This top-down division of the internal space of the frame 10 clearly defines the functional zones within the power battery pack 1, improving safety and enabling efficient thermal management. It also facilitates modular production and maintenance. The placement of the power battery 20 in the bottom layer significantly lowers the vehicle's center of gravity, improving driving stability and handling, and reducing body roll during cornering. Additionally, the bottom layer is typically integrated with the vehicle's chassis structure. The bottom of the frame 10 is designed with anti-collision beams, buffer structures, or high-strength protective plates to provide the first line of physical protection for the fragile battery cells, preventing damage from bottoming out or collisions. The thermal management system 30 is located in the middle layer, achieving the shortest heat conduction path, improving heat exchange efficiency, and ensuring that the power battery pack 1 can operate efficiently, safely, and for a long lifespan.

[0028] Of course, such as Figure 1 and Figure 2 As shown, the power battery pack 1 also includes a high-voltage wiring harness, which is located in the intermediate layer. The high-voltage wiring harness is responsible for safely and efficiently transmitting the electrical energy generated by the power battery 20. Located in the intermediate layer, the high-voltage wiring harness is closely integrated with the thermal management system 30, allowing the thermal management system 30 to actively dissipate heat from the high-voltage wiring harness, preventing overheating that could lead to insulation aging or energy loss. Furthermore, in the space-constrained power battery pack 1, integrating the high-voltage wiring harness and the thermal management system 30 into the same layer optimizes space utilization and reduces wiring length and complexity.

[0029] Furthermore, such as Figure 1 and Figure 2 As shown, the power battery pack 1 also includes a PEU module 40, which is located on the left side of the top layer. The PEU module 40 integrates three core functions: motor control, charging management, and voltage conversion. It can manage and convert electrical energy to ensure efficient and stable vehicle operation. The placement of the PEU module 40 on the left side of the top layer makes its configuration more reasonable and stable, thereby improving the integration of the power battery pack 1.

[0030] In addition, such as Figure 1 and Figure 2 As shown, the power battery pack 1 also includes a low-voltage battery 50, which is located on the right side of the top layer. The low-voltage battery 50 can store low-voltage DC power. Its placement on the right side of the top layer makes its arrangement more rational and stable, improving the integration of the power battery pack 1. Placing the low-voltage battery 50 on the top layer also keeps it away from the mechanical impact zone of the bottom layer and the heat exchange zone of the middle layer, improving safety. Furthermore, it facilitates vehicle assembly and subsequent maintenance. Additionally, since the low-voltage battery 50 generates heat, its placement on the top layer allows for better heat dissipation through air convection, thus extending the lifespan of the power battery pack 1.

[0031] It should be noted that, as Figure 1 As shown, the power battery pack 1 also includes a power distribution box, which is located on the right side of the top layer and spaced apart from the low-voltage battery 50. The power distribution box can distribute power to low-voltage devices such as lights, air conditioning, instruments, and ECUs, and provides protection with fuses or electronic fuses. The placement of the power distribution box on the right side of the top layer is more rational and stable, improving the integration of the power battery pack 1. Placing the power distribution box on the top layer keeps it away from the mechanical impact zone of the bottom layer and the heat exchange zone of the middle layer, improving safety. It also facilitates vehicle assembly and subsequent maintenance. Furthermore, since the power distribution box generates heat, its placement on the top layer allows for better heat dissipation through air convection, thus extending the lifespan of the power battery pack 1. The spaced-apart arrangement between the power distribution box and the low-voltage battery 50 provides electrical isolation, ensuring safety and optimizing thermal management. Additionally, it facilitates the maintenance and replacement of both the power distribution box and the low-voltage battery 50.

[0032] The vehicle according to an embodiment of the present invention includes: the power battery pack 1 described in the above embodiments.

[0033] In addition, the vehicle also includes a frame, with the power battery pack 1 located on the right side of the frame. The frame is the main load-bearing structure of the vehicle, supporting other components. The placement of the power battery pack 1 on the right side of the frame addresses issues such as uneven axle load distribution, high center of gravity, and poor vehicle stability and safety associated with rear-mounted vehicles. Furthermore, it allows for a highly integrated chassis layout, increasing the vehicle's forward turning radius and maximizing trailer capacity.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A power battery pack (1), characterized in that, include: Framework (10); A power battery (20) is disposed within the frame (10); A thermal management system (30) is disposed within the frame (10) and can exchange heat with the power battery (20).

2. The power battery pack (1) according to claim 1, characterized in that, The thermal management system (30) includes an air conditioning compressor (300), a plate heat exchanger (301), and a water pump (302). The air conditioning compressor (300), the plate heat exchanger (301), and the water pump (302) are all located on the side of the power battery (20) facing the inside of the vehicle frame.

3. The power battery pack (1) according to claim 1, characterized in that, Also includes: The battery thermal management water tank (60) and the motor thermal management water tank (70) are both located within the frame (10) and are located on the front side of the power battery (20).

4. The power battery pack (1) according to claim 1, characterized in that, In the direction from bottom to top, the internal space of the frame (10) is divided into a bottom layer, a middle layer and a top layer in sequence. The power battery (20) is located in the bottom layer and the thermal management system (30) is located in the middle layer.

5. The power battery pack (1) according to claim 4, characterized in that, Also includes: High-voltage wiring harness, wherein the high-voltage wiring harness is disposed in the intermediate layer.

6. The power battery pack (1) according to claim 4, characterized in that, Also includes: PEU module (40), which is located on the left side of the top layer.

7. The power battery pack (1) according to claim 4, characterized in that, Also includes: A low-voltage battery (50) is disposed on the right side of the top layer.

8. The power battery pack (1) according to claim 7, characterized in that, Also includes: A power distribution box is disposed on the right side of the top layer, and the power distribution box is spaced apart from the low-voltage battery (50).

9. A vehicle, characterized in that, include: The power battery pack (1) according to any one of claims 1-8.

10. The vehicle according to claim 9, characterized in that, Also includes: The vehicle frame, wherein the power battery pack (1) is disposed on the right side of the vehicle frame.

Images