A module mounting beam and a battery box

Abstract

The utility model relates to the technical field of automobile battery box, concretely is a module installation beam and battery box, including installation beam main part, installation beam main part is T type long strip, installation beam main part adopts roll -pressing technology one -off forming, and the inside of installation beam main part is equipped with the forming cavity, and the abutting end is equipped in the forming cavity of installation beam main part, and the abutting end has the weld at the place, after the roll -pressing one -off forming of installation beam main part, the abutting end of many turns over and refolds is welded fixed, has improved the strength of installation beam main part, and the steel sheet is reduced the processing procedure and the die quantity through the roll -pressing one -off forming, has reduced the production cost.

Description

Technical Field

[0001] This application relates to the field of automotive battery housing technology, specifically a module mounting beam and a battery housing. Background Technology

[0002] The power battery is a core component of electric vehicles. The traditional battery pack manufacturing method involves assembling several cells into a module, and then assembling the module inside the battery housing. The beams within the battery housing that provide support and mounting points for the modules are called module mounting beams. In other words, in the power battery system of new energy vehicles, the battery housing, as the core load-bearing and protective structure, requires module mounting beams to achieve stable support and installation of the battery modules. The main structure of the module mounting beam includes a main beam and plate beams located on the sides of the main beam.

[0003] In current mainstream designs, modular mounting beams mostly adopt a split welding scheme of "roll-pressed main beam + stamped connectors": that is, a long strip main beam is manufactured by roll pressing, and then multiple stamped parts are welded on the main beam to form a plate beam, thus forming a complete modular mounting beam.

[0004] The stamped parts in the modular welding scheme of the above-mentioned mounting beam structure rely on mold forming. Therefore, the production of the modular mounting beam requires the development of multiple sets of stamping dies, and the production of stamped parts generates a lot of scrap material, increasing raw material loss. The multi-process processing (rolling, stamping, welding, and straightening) leads to an increase in manpower, energy consumption, and equipment investment. Utility Model Content

[0005] To address the high cost of separate welding in existing technologies, this utility model provides a modular mounting beam.

[0006] This utility model also provides a battery box having the above-mentioned module mounting beam.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] This utility model provides a modular mounting beam, including a mounting beam body, characterized in that:

[0009] The main body of the mounting beam is a hollow T-shaped strip. The main body of the mounting beam is integrally formed by roll forming process. The main body of the mounting beam has a forming cavity inside the forming cavity, and the abutting end of the main body of the mounting beam has a weld at the abutting end.

[0010] Preferably, the main body of the mounting beam has a first folding section, a second folding section, and a third folding section. The first folding section, the second folding section, and the third folding section all abut against the inner wall of the forming cavity to form abutment ends. The first folding section, the second folding section, and the third folding section divide the forming cavity into three sets of support cavities. When the steel plate is folded, the first folding section, the second folding section, and the third folding section abut against the inner wall of the forming cavity after the main body of the mounting beam is roll-formed. Laser welding is performed along the length direction at these three abutment ends to achieve fixed positioning of multiple sets of abutment ends, improve the strength of the main body of the mounting beam, and improve the support strength of the main body of the mounting beam after dividing the forming cavity into three sets of support cavities.

[0011] Preferably, the first folding section and the second folding section are respectively located on both sides of the bottom of the main body of the mounting beam, and the third folding section is groove-shaped and located on the top of the main body of the mounting beam. The three abutting ends are respectively set on both sides of the bottom and the top of the main body of the mounting beam, so that the main body of the mounting beam is reinforced at multiple points after welding at the bottom and the top, thereby further improving the strength of the main body of the mounting beam.

[0012] Preferably, the mounting beam body is provided with multiple sets of first mounting holes, second mounting holes and third mounting holes at intervals. The first mounting holes, second mounting holes and third mounting holes are used for connecting and fixing the battery module to the mounting beam body and for connecting the mounting beam body to other components. The reserved holes improve the subsequent installation efficiency.

[0013] This utility model also provides a battery box, including a mounting beam body and a base plate. A frame is fixedly provided on the base plate. The mounting beam body is installed on the base plate, and both ends of the mounting beam body are welded and fixed to the frame. An expansion beam is provided on the base plate, and both ends of the expansion beam are welded and fixed to the frame. When the mounting beam body is installed on the battery box, the bottom of the mounting beam body is connected to the base plate, and both ends of the mounting beam body are welded to one side of the frame. The two ends of the expansion beam are also welded to the frame to separate the space inside the frame for subsequent separation and installation of battery modules.

[0014] Preferably, the base plate is provided with a first through hole and a second through hole, which are aligned with the first mounting hole and the second mounting hole, respectively. A rivet nut is fixedly installed in the first mounting hole of the mounting beam body. The rivet nut is provided with a threaded hole aligned with the first through hole. Expansion pins are inserted into the second through hole and the second mounting hole. The expansion pins connect and fix the base plate and the mounting beam body. The rivet nut is fixedly installed in the first mounting hole of the mounting beam body. The external components can be connected and fixed to the mounting beam body through the threaded hole and the first through hole. The expansion pins pass through the second through hole and the second mounting hole to connect and fix the mounting beam body and the base plate, ensuring the strength of the battery box.

[0015] Preferably, a support frame is fixedly installed on the top of the main body of the mounting beam. The support frame has a through hole aligned with the third mounting hole. An expansion pin is inserted into the third mounting hole and the through hole. The expansion pin connects and fixes the support frame and the main body of the mounting beam. The support frame is in the shape of a "U". The support frame is fixed to the top of the main body of the mounting beam by laser welding. Then, the expansion pin is used to further fix and limit the support frame and the main body of the mounting beam, thereby improving the strength of the main body of the mounting beam.

[0016] The advantages of adopting the above technical solution are:

[0017] This utility model includes a mounting beam body, which is a hollow T-shaped strip. The mounting beam body is integrally formed using a roll forming process. The mounting beam body has a forming cavity inside the forming cavity, and an abutment end is formed in the forming cavity. The abutment end has a weld. After the mounting beam body is roll-formed in one step, the abutment ends at multiple folds are welded and fixed, which improves the strength of the mounting beam body. Furthermore, forming the steel plate in one step by roll forming reduces the number of processing steps and molds, thereby reducing production costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of this utility model is shown;

[0020] Figure 2 A partial structural schematic diagram of this utility model is shown;

[0021] Figure 3 A partially enlarged view of point A in this utility model is shown;

[0022] Figure 4 A top view of the battery box of this utility model is shown.

[0023] The components are as follows: 1. Mounting beam body; 100. Abutment end; 101. Forming cavity; 102. Support cavity; 103. First mounting hole; 104. Second mounting hole; 105. Third mounting hole; 2. First folding section; 3. Second folding section; 4. Third folding section; 5. Base plate; 501. Support frame; 502. Expansion pin; 6. Frame; 7. Expansion beam. Detailed Implementation

[0024] 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, and 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.

[0025] like Figures 1-4 As shown, this utility model embodiment discloses a modular mounting beam, including a mounting beam body 1. The mounting beam body 1 is a hollow T-shaped strip. The mounting beam body 1 is integrally formed by a roll forming process. The mounting beam body 1 has a forming cavity 101 inside. The mounting beam body 1 has an abutment end 100 formed in the forming cavity 101. The abutment end 100 has a weld.

[0026] In at least one embodiment, the mounting beam body 1 is provided with a first folding section 2, a second folding section 3, and a third folding section 4. The first folding section 2, the second folding section 3, and the third folding section 4 all abut against the inner wall of the forming cavity 101 to form abutment ends 100. The first folding section 2, the second folding section 3, and the third folding section 4 divide the forming cavity 101 into three sets of support cavities 102. When the steel plate is folded, the first folding section 2, the second folding section 3, and the third folding section 4 abut against the inner wall of the forming cavity 101 after the mounting beam body 1 is roll-formed. Laser welding is performed at these three abutment ends 100 along the length direction to achieve fixed positioning of multiple sets of abutment ends 100, improve the strength of the mounting beam body 1, and improve the support strength of the mounting beam body 1 after dividing the forming cavity 101 into three sets of support cavities 102.

[0027] In at least one embodiment, the first folding section 2 and the second folding section 3 are respectively disposed on both sides of the bottom of the mounting beam body 1, and the third folding section 4 is groove-shaped and located on the top of the mounting beam body 1. The three abutting ends 100 are respectively disposed on both sides of the bottom and the top of the mounting beam body 1, so that the mounting beam body 1 is reinforced at multiple points after welding at the bottom and top, thereby further improving the strength of the mounting beam body 1.

[0028] In at least one embodiment, the mounting beam body 1 is provided with multiple sets of first mounting holes 103, second mounting holes 104 and third mounting holes 105 at intervals. The first mounting holes 103, second mounting holes 104 and third mounting holes 105 are used for connecting and fixing the battery module to the mounting beam body 1 and connecting the mounting beam body 1 to other components, and the reserved holes improve the subsequent installation efficiency.

[0029] A battery box body includes a mounting beam main body 1, and also includes a bottom plate 5. A frame 6 is fixedly arranged on the bottom plate 5. The mounting beam main body 1 is mounted on the bottom plate 5. Both ends of the mounting beam main body 1 are fixedly welded to the frame 6. An expansion beam 7 is arranged on the bottom plate 5. Both ends of the expansion beam 7 are fixedly welded to the frame 6. When the mounting beam main body 1 is mounted on the battery box, the bottom of the mounting beam main body 1 is connected to the bottom plate 5. Both ends of the mounting beam main body 1 are respectively fixedly welded to one side of the frame 6. Both ends of the expansion beam 7 are also welded to the frame 6 to divide the space inside the frame 6, for subsequent divided installation of battery modules.

[0030] In at least one embodiment, through holes one and two are provided on the bottom plate 5. Through hole one and through hole two are respectively aligned with the first mounting hole 103 and the second mounting hole 104. A rivet nut is fixedly arranged in the first mounting hole 103 of the mounting beam main body 1. A threaded hole aligned with through hole one is provided in the rivet nut. An expansion pin 502 is inserted into through hole two and the second mounting hole 104. The expansion pin 502 connects and fixes the bottom plate 5 and the mounting beam main body 1. The rivet nut is fixedly installed in the first mounting hole 103 of the mounting beam main body 1. An external component can be connected and fixed to the mounting beam main body 1 through the threaded hole and through hole one. The expansion pin 502 passes through through hole two and the second mounting hole 104 to connect and fix the mounting beam main body 1 and the bottom plate 5, ensuring the strength of the battery box body.

[0031] In at least one embodiment, a support frame 501 is fixedly arranged on the top of the mounting beam main body 1. A through hole aligned with the third mounting hole 105 is provided on the support frame 501. An expansion pin 502 is inserted into the third mounting hole 105 and the through hole. The expansion pin 502 connects and fixes the support frame 501 and the mounting beam main body 1. The support frame 501 is in a "U" shape. The support frame 501 is fixedly welded to the top of the mounting beam main body 1 by laser welding, and then the support frame 501 and the mounting beam main body 1 are further fixed and limited by the expansion pin 502, improving the strength of the mounting beam main body 1.

[0032] When the mounting beam main body 1 is produced and processed, workers continuously roll a high-strength steel plate through the rolling die of the mounting beam main body 1. During the rolling process, the steel plate is folded multiple times, and finally a hollow T-shaped long strip-shaped mounting beam main body 1 is formed. During the continuous rolling and folding of the steel plate, the length of the mounting beam main body 1 is cut and controlled by laser cutting or sawing. After rolling and forming, an inner folded cavity 101 is formed inside the mounting beam main body 1. Multiple sets of abutting ends 100 are formed at the folded parts of the steel plate inside the cavity 101. Laser welding is performed on the inner walls of the mounting beam main body 1 that abut against each other along the length direction at the abutting ends 100 to ensure the strength of the mounting beam main body 1. And by using the rolling die to integrally form the steel plate through rolling, the processing procedures and the number of dies are reduced, and the production cost is lowered. [[ID=IO]]

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A modular mounting beam, comprising a mounting beam body, characterized in that: The main body of the mounting beam is a hollow T-shaped strip. The main body of the mounting beam is integrally formed by roll forming process. The main body of the mounting beam has a forming cavity inside the forming cavity, and the abutting end of the main body of the mounting beam has a weld at the abutting end.

2. The modular mounting beam according to claim 1, characterized in that: The main body of the mounting beam is provided with a first folding section, a second folding section and a third folding section. The first folding section, the second folding section and the third folding section all abut against the inner wall of the forming cavity to form an abutting end. The first folding section, the second folding section and the third folding section divide the forming cavity into three sets of support cavities.

3. A modular mounting beam according to claim 2, characterized in that: The first and second folding sections are located on both sides of the bottom of the main body of the mounting beam, and the third folding section is in the shape of a groove and is located on the top of the main body of the mounting beam.

4. A modular mounting beam according to claim 3, characterized in that: The main body of the mounting beam is provided with multiple sets of first mounting holes, second mounting holes and third mounting holes at intervals.

5. A battery housing, characterized in that: The system includes the mounting beam body as described in claim 4, and also includes a base plate, on which a frame is fixedly provided. The mounting beam body is mounted on the base plate, and both ends of the mounting beam body are welded and fixed to the frame. An expansion beam is provided on the base plate, and both ends of the expansion beam are welded and fixed to the frame.

6. A battery housing according to claim 5, characterized in that: The base plate is provided with through hole one and through hole two, which are aligned with the first mounting hole and the second mounting hole, respectively. A rivet nut is fixedly installed in the first mounting hole of the mounting beam body. The rivet nut is provided with a threaded hole aligned with through hole one. Expansion pins are inserted into through hole two and the second mounting hole. The expansion pins connect and fix the base plate and the mounting beam body.

7. A battery housing according to claim 6, characterized in that: A support frame is fixedly installed on the top of the main body of the mounting beam. The support frame has a through hole aligned with the third mounting hole. An expansion pin is inserted into the third mounting hole and the through hole. The expansion pin connects and fixes the support frame and the main body of the mounting beam.

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