Commercial vehicle chassis modular battery

Abstract

The invention discloses a commercial vehicle chassis modular battery which comprises a battery main body, and connecting assemblies are arranged on the two sides of the battery main body; the battery main body comprises a battery cell group and a battery box body, the battery cell group is assembled in the battery box body, and the battery box body and the connecting assembly are integrally fixed to form a chassis integrated bearing structure; the connecting assembly comprises a frame beam and a connecting piece, and the connecting piece is used for realizing modular combination of the frame beam and the battery box body to adapt to commercial vehicle types with different axle distances; the battery box body and the connecting assembly are integrated and fixed to form a chassis integrated bearing structure, the traditional assembly form of an independent battery pack and an additional frame is abandoned, the wind resistance and the gravity center height of the whole vehicle are effectively reduced, the driving stability of the whole vehicle is improved, and the aerodynamic performance of the whole vehicle is optimized; the modular combination design of the frame beam and the battery box body is realized by virtue of the connecting piece, so that the battery box can be flexibly adapted to commercial vehicle types with different axle distances, a battery system does not need to be redesigned, and the universality and the flexibility of vehicle type adaption are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of power batteries, in particular to a modular battery for a commercial vehicle chassis. BACKGROUND

[0002] As a core energy supply component of an electric commercial vehicle, the installation mode of a power battery is directly related to the structural rationality, driving safety and use convenience of the whole vehicle. The arrangement form of the power battery system of a commercial vehicle directly affects the performance of the whole vehicle, as the commercial vehicle is a core equipment for goods transportation and long-distance operation.

[0003] There are mainly two arrangement schemes for the battery pack of an existing commercial vehicle: the first scheme is to arrange the battery pack at the rear end of the cab, which is convenient for installation but significantly increases the wind resistance of the whole vehicle, lifts the gravity center of the whole vehicle and reduces the driving stability, especially in complex road conditions, which has safety hazards; the second scheme is to arrange the battery pack on the side or bottom of the vehicle frame, which needs to additionally set an independent battery frame to assemble the standard battery pack on the vehicle frame, which not only increases the number of parts and the weight of the whole vehicle, but also has the problems of low integration, complicated assembly process, high cost, and cannot be flexibly adapted to different wheelbase vehicle models, resulting in poor vehicle model adaptability, inconvenient maintenance and difficulty in meeting the demand of long-distance transportation of commercial vehicles for high power and low energy consumption.

[0004] Therefore, a modular battery for a commercial vehicle chassis is provided. SUMMARY

[0005] The technical task of the application is to provide a modular battery for a commercial vehicle chassis to realize high integration of the battery system and the chassis frame, optimize the aerodynamic performance and driving stability of the whole vehicle, reduce redundant parts and manufacturing costs, and adapt to different wheelbase vehicle models through modular design to improve the convenience of assembly and maintenance, thereby solving the above problems.

[0006] To achieve the above purpose, the application provides the following technical scheme: A modular battery for a commercial vehicle chassis includes a battery main body, both sides of which are provided with a connecting assembly, wherein: The battery main body includes a battery core group and a battery box, the battery core group is assembled in the battery box, and the battery box and the connecting assembly are integrally fixed to form a chassis integrated bearing structure; The connecting assembly includes a vehicle frame beam and a connecting piece, the connecting piece is used to realize the modular combination of the vehicle frame beam and the battery box, and adapt to different wheelbase commercial vehicle models.

[0007] As a preferred, the battery box includes a shell with an open top and a bottom, a cover is installed on the top of the shell, and an installation cavity of the battery core group is formed between the shell and the cover.

[0008] As preferred, the bottom of the shell and the middle part of the inner cavity are fixedly connected with cold plates, the cold plates are used for dividing the mounting cavity into two layers of mounting areas, and each layer of the mounting area is provided with a group of battery cells.

[0009] As preferred, the top of the cold plate is arranged in close contact with the corresponding group of battery cells, the inside of the cold plate is a serpentine flow channel structure, and cooling liquid is introduced into the flow channel for heat dissipation.

[0010] As preferred, the shell is detachably connected with the frame beam through a connecting piece, and the connecting piece is fixed to the end of the frame beam.

[0011] As preferred, the connecting piece comprises a mounting plate which is arranged in close contact with the side surface of the shell and is fixed through bolts, and a mounting beam is fixedly connected to the side of the mounting plate away from the shell, the mounting beam is sleeved with the end of the frame beam and is fixed through bolts.

[0012] As preferred, the mounting plate and the mounting beam are an integral structure, the central axes of the mounting plate and the mounting beam are arranged perpendicular to each other, and the central axes of the mounting beam and the frame beam are on the same straight line.

[0013] As preferred, the mounting beam and the frame beam are both in the shape of a n, and a plurality of mounting holes in a rectangular array are formed in the mounting beam and the frame beam.

[0014] As preferred, a battery management system is further included, the battery management system is integrated on the inner side of the cover and is electrically connected with the group of battery cells, and is used for monitoring the state of the group of battery cells and realizing safety protection.

[0015] As preferred, the battery management system can detect the voltage, temperature and power of the group of battery cells, and has overcharge, overdischarge and overtemperature protection functions.

[0016] Compared with the prior art, the application has the following advantages and positive effects: 1. The battery box and the connecting assembly are integrated and fixed to form a chassis integrated bearing structure, the traditional independent battery pack and the assembly form of the additional frame are abandoned, the whole vehicle wind resistance and the height of the gravity center are effectively reduced, the driving stability of the whole vehicle is improved, and the aerodynamic performance of the whole vehicle is optimized; the modular combination design of the frame beam and the battery box is realized by means of the connecting piece, different wheelbase commercial vehicle models can be flexibly adapted, the battery system does not need to be redesigned, and the universality and flexibility of the model adaptation are improved. 2. The double-layer mounting area is formed by the cold plates in the battery box, the internal space of the box is fully utilized, the efficient heat dissipation of the group of battery cells is realized through the heat dissipation effect of the cold plates, the use performance of the group of battery cells is avoided due to local overheating, and the operation stability of the group of battery cells is ensured. 3、The application, through the shell and the frame beam through the connecting piece adopts detachable connection, the battery box top sets openable cover body, simplifies the assembly process, at the same time, it is convenient for the later maintenance and maintenance of the battery cell group, reduces the operation and maintenance difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 The structural schematic diagram of the embodiment of the present application is shown in the figure. Figure 2 The structural schematic diagram of the embodiment of the present application is shown in the figure. Figure 3 The structural schematic diagram of the embodiment of the present application is shown in the figure. Figure 4 The structural schematic diagram of the embodiment of the present application is shown in the figure.

[0019] In the figure: 100, battery body; 110, battery cell group; 120, shell; 130, cover; 140, cold plate; 200, connecting assembly; 210, frame beam; 220, connecting piece; 221, mounting plate; 222, assembly beam; 230, mounting hole. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the above-mentioned purposes, features and advantages of the present application, the present application will be further described below in combination with the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] The present application will be further described below in combination with the drawings and specific embodiments.

[0022] Embodiment 1 As Figures 1-4As shown, a modular battery for a commercial vehicle chassis according to an embodiment of the present invention includes a battery body 100 and a connecting assembly 200. A set of connecting assemblies 200 is provided on each side of the battery body 100, with two symmetrically arranged connecting assemblies 200 about the center of the battery body 100. The battery body 100 includes a cell assembly 110 and a battery housing. The cell assembly 110 is assembled in the battery housing, and the battery housing and connecting assembly 200 are integrated and fixed to form an integrated chassis load-bearing structure. The connecting assembly 200 includes a frame beam 210 and a connector 220. The connector 220 is used to realize the modular combination of the frame beam 210 and the battery housing, adapting to commercial vehicle models with different wheelbases. Through the integrated design of the battery housing and connecting assembly 200, the assembly structure of the traditional battery system is simplified, and redundant parts are reduced. With the modular combination function of the connector 220, the battery system can flexibly adapt to different wheelbase models, improving the universality and flexibility of vehicle adaptation.

[0023] Example 2 like Figures 1-4 As shown, the modular battery for a commercial vehicle chassis provided in this embodiment differs from that in Embodiment 1 in that: The battery housing includes a shell 120 that is open at both the top and bottom. A cover 130 is installed on the top of the shell 120 by means of an elastic sealing ring. An installation cavity for the battery cell assembly 110 is formed between the shell 120 and the cover 130. The open shell 120 and the cover 130 cooperate to form an independent installation cavity, providing a stable installation environment for the battery cell assembly 110. At the same time, the detachable design of the cover 130 facilitates the installation and subsequent maintenance of the battery cell assembly 110. A cold plate 140 is fixedly connected to both the bottom of the housing 120 and the middle of the inner cavity. The cold plate 140 divides the mounting cavity into upper and lower mounting areas, each of which is equipped with a set of battery cells 110. The cold plate 140 and the bottom of the housing 120 are sealed with a sealing ring to prevent external moisture and dust from entering the housing 120. The cold plate 140 forms a double-layer mounting area, making full use of the internal space of the housing 120 and improving the power supply capacity of the battery system. At the same time, the cold plate 140 can be directly attached to the battery cells 110, laying the structural foundation for efficient heat dissipation. The top of the cold plate 140 is attached to the corresponding battery cell 110. The interior of the cold plate 140 has a serpentine flow channel structure, through which coolant is circulated for heat dissipation. The design of the cold plate 140 attached to the battery cell 110 can improve thermal conductivity, and the serpentine flow channel structure can extend the flow path of the coolant, improve the uniformity of heat dissipation, effectively prevent local overheating of the battery cell 110, and ensure the stable operation of the battery cell 110. The housing 120 is detachably connected to the frame beam 210 via a connector 220, which is fixed to the end of the frame beam 210. The detachable connection design simplifies the assembly process of the housing 120 and the frame beam 210, and also facilitates the disassembly, repair or replacement of the battery box in the later stage, reducing the difficulty of operation and maintenance.

[0024] The connector 220 includes a mounting plate 221 that fits against the side of the housing 120 and is fixed with bolts. An assembly beam 222 is fixedly connected to the side of the mounting plate 221 away from the housing 120. The assembly beam 222 is sleeved onto the end of the frame beam 210 and fixed with bolts. This dual connection structure, where the mounting plate 221 is fitted and fixed to the housing 120 and the assembly beam 222 is sleeved and fixed to the frame beam 210, enhances the connection stability between the connector 220 and the housing 120 and the frame beam 210, ensuring the load-bearing reliability of the integrated structure. The mounting plate 221 and the assembly beam 222 are integrally formed, with their central axes perpendicular to each other. The central axes of the assembly beam 222 and the frame beam 210 are on the same straight line. This integral structure improves the structural strength and integrity of the connector 220 itself, preventing loosening of the connection. The rational layout of the central axes makes the force transmission more even, further enhancing the stability and load-bearing capacity of the overall structure. Both the assembly beam 222 and the frame beam 210 have a U-shaped structure, and both have several mounting holes 230 arranged in a rectangular array. The U-shaped structure simplifies the manufacturing process while ensuring structural strength. The rectangular array of mounting holes 230 provides multiple fixing points for the connection between the assembly beam 222 and the frame beam 210, which facilitates the adjustment of the fixing position according to assembly requirements and improves assembly flexibility.

[0025] It also includes a battery management system (BMS), integrated inside the cover 130 and electrically connected to the cell assembly 110. The BMS monitors the status of the cell assembly 110 and provides safety protection. This integration optimizes the installation space, allows for real-time monitoring of the cell assembly 110, promptly detects operational anomalies, and prevents escalation of faults through safety protection functions, ensuring the safe use of the battery system. The BMS detects the voltage, temperature, and charge of the cell assembly 110, and provides overcharge, over-discharge, and over-temperature protection. It specifically detects the core operating parameters of the cell assembly 110, accurately identifies risky conditions such as overcharge, over-discharge, and over-temperature, and uses corresponding protection functions to block dangerous operating states, further improving the operational safety and lifespan of the battery system.

[0026] Working principle: During assembly, the cold plate 140 is first fixed inside the housing 120, and the battery cell assembly 110 is installed in the double-layer installation area formed by the cold plate 140. Then, the cover 130 is assembled on the top of the housing 120 to complete the assembly of the battery body 100. Subsequently, the frame beam 210 is fixed to the housing 120 through the connector 220. The mounting plate 221 is attached to the housing 120 and the mounting beam 222 is sleeved to the frame beam 210 to form a stable integrated load-bearing structure between the battery box and the frame beam 210. According to the wheelbase requirements of the target vehicle model, the modular combination of the connector 220 enables the adaptation and installation of frame beams 210 of different lengths to the battery box. During use, the battery cell pack 110 provides power to the commercial vehicle. The coolant in the internal flow channel of the cold plate 140 continuously exchanges heat with the battery cell pack 110, dissipating the heat generated by the battery cell pack 110 during operation and preventing the battery cell pack 110 from overheating. The battery management system monitors the operating status of the battery cell pack 110 in real time, including voltage, temperature, and charge. When abnormal conditions such as overcharging, over-discharging, or overheating are detected, the protection mechanism is immediately activated to cut off the circuit and ensure the safety of the battery system. If inspection or maintenance is required, the cover 130 can be removed to inspect the battery cell pack 110, or the connector 220 can be removed to separate the battery box from the vehicle frame beam 210, enabling targeted maintenance operations.

[0027] In summary, this modular battery for commercial vehicle chassis integrates the battery box and connecting components 200 to form an integrated chassis load-bearing structure. This eliminates the traditional assembly method of separate battery packs and additional frames, effectively reducing overall vehicle wind resistance and center of gravity, improving overall vehicle stability, and optimizing overall vehicle aerodynamic performance. The modular combination design of the frame beam 210 and battery box, achieved through connecting components 220, allows for flexible adaptation to commercial vehicle models with different wheelbases, eliminating the need for redesigning the battery system and enhancing the versatility and flexibility of vehicle compatibility. The battery box is divided into two installation areas by a cold plate 140, which makes full use of the internal space of the box and achieves efficient heat dissipation of the cell pack 110 through the heat dissipation effect of the cold plate 140. This prevents the cell pack 110 from being affected by local overheating and ensures the operational stability of the cell pack 110. The housing 120 is detachably connected to the vehicle frame beam 210 through the connector 220. The top of the battery box is equipped with an openable cover 130, which simplifies the assembly process and facilitates the later inspection and maintenance of the cell pack 110, reducing the difficulty of operation and maintenance.

[0028] Through the above specific embodiments, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A modular battery for a commercial vehicle chassis, characterized in that, Includes a battery body (100), with connecting components (200) on both sides, wherein: The battery body (100) includes a cell assembly (110) and a battery housing. The cell assembly (110) is assembled in the battery housing. The battery housing is integrated and fixed with the connecting component (200) to form an integrated chassis load-bearing structure. The connecting component (200) includes a frame beam (210) and a connector (220). The connector (220) is used to realize the modular combination of the frame beam (210) and the battery box, which can be adapted to commercial vehicle models with different wheelbases.

2. The modular battery for commercial vehicle chassis according to claim 1, characterized in that: The battery housing includes a shell (120) with an open top and bottom, and a cover (130) is installed on the top of the shell (120). An installation cavity for the battery cell assembly (110) is formed between the shell (120) and the cover (130).

3. The modular battery for commercial vehicle chassis according to claim 2, characterized in that: A cold plate (140) is fixedly connected to the bottom of the housing (120) and the middle of the inner cavity. The cold plate (140) is used to divide the installation cavity into upper and lower installation areas. Each installation area is equipped with a set of battery cells (110).

4. The modular battery for commercial vehicle chassis according to claim 3, characterized in that: The top of the cold plate (140) is attached to the corresponding battery cell assembly (110). The interior of the cold plate (140) has a serpentine flow channel structure, and coolant is introduced into the flow channel for heat dissipation.

5. The modular battery for commercial vehicle chassis according to claim 2, characterized in that: The housing (120) is detachably connected to the frame beam (210) via a connector (220), which is fixed to the end of the frame beam (210).

6. The modular battery for commercial vehicle chassis according to claim 5, characterized in that: The connector (220) includes a mounting plate (221) that fits against the side of the housing (120) and is fixed with bolts. An assembly beam (222) is fixedly connected to the side of the mounting plate (221) away from the housing (120). The assembly beam (222) is sleeved on the end of the frame beam (210) and fixed with bolts.

7. The modular battery for commercial vehicle chassis according to claim 6, characterized in that: The mounting plate (221) and the assembly beam (222) are integrally formed structures. The central axes of the mounting plate (221) and the assembly beam (222) are perpendicular to each other, and the central axes of the assembly beam (222) and the frame beam (210) are on the same straight line.

8. The modular battery for commercial vehicle chassis according to claim 7, characterized in that: Both the assembly beam (222) and the frame beam (210) have a U-shaped structure, and both have a number of mounting holes (230) arranged in a rectangular array.

9. The modular battery for commercial vehicle chassis according to claim 1, characterized in that: It also includes a battery management system, which is integrated inside the cover (130) and electrically connected to the cell assembly (110) for monitoring the status of the cell assembly (110) and providing safety protection.

10. The modular battery for commercial vehicle chassis according to claim 9, characterized in that: The battery management system can detect the voltage, temperature and charge of the cell pack (110) and has overcharge, over-discharge and over-temperature protection functions.

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