Extended-range power battery module of new energy automobile

Abstract

The utility model discloses an extended-range power battery module of a new energy automobile, which relates to the technical field of battery modules and comprises a battery module fixing outer frame, the upper end of the battery module fixing outer frame is in threaded connection with a module gland, and a battery series-parallel connection mechanism is fixedly arranged in the battery module fixing outer frame. According to the utility model, the problems that in the prior art, the module outer frame needs to be welded into a whole, the reasonable welding level of parts is ensured, and the connection is unstable due to the fact that the original batteries are connected through an external wire are solved; by arranging a series-parallel connection bottom plate and a series-parallel connection upper pressing plate in the battery series-parallel connection mechanism, an electrifying plate is arranged in the series-parallel connection bottom plate and the series-parallel connection upper pressing plate, and the stability of circuit connection is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery modules, in particular to a range-extended power battery module for new energy vehicles. Background Art

[0002] New energy vehicles use extended-range power battery modules to provide driving force. In order to achieve the high energy density of lithium-ion batteries and the integrated output of battery cells, extended-range power battery modules need to place multiple battery cells in a metal outer frame. This not only integrates the battery cells, but also protects non-rigid structure batteries such as soft-pack battery cells. In the existing technology, the module outer frame is mainly tightly filled to prevent multiple battery cells. The battery cells are connected in different series and parallel modes inside the frame before being installed on the electric vehicle. In other words, the module outer frame needs to be welded together, and the tooling settings and coordination with other structures for the module outer frame need to be considered to ensure that other components are installed in the specified position and that the components achieve a reasonable welding level. However, welding itself is prone to process defects such as blowholes, weld sagging, and weld offset, which are difficult to avoid. This is not good for the stability of the outer frame. In addition, the original battery is connected by external wires, and the connection is unstable.

[0003] In order to solve the above problems, a new energy vehicle range-extended power battery module is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a new energy vehicle extended-range power battery module, which solves the problem in the prior art that the module outer frame needs to be welded together to ensure that the components reach a reasonable welding level, and the original batteries are connected by external wires, which makes the connection unstable.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a new energy vehicle extended-range power battery module, comprising a battery module fixed outer frame, the upper end of the battery module fixed outer frame is threadedly connected to a module pressure cover, the interior of the battery module fixed outer frame is fixedly provided with a battery series-parallel mechanism, the battery module fixed outer frame comprises an outer frame shell, a triangular heat sink fixedly arranged inside the outer frame shell, the battery series-parallel mechanism comprises a series-parallel base plate, a battery positioning frame fixedly arranged on one side of the series-parallel base plate, a power battery placed inside the battery positioning frame, a series-parallel upper pressure plate arranged on the upper end of the power battery, and the module pressure cover comprises a cover threadedly connected to the outer frame shell for pressing the series-parallel upper pressure plate.

[0006] Preferably, a connector fixing opening is provided on one side of the outer frame shell, and external heat dissipation openings are provided around the outer frame shell.

[0007] Preferably, the module gland further comprises a clamping block fixedly arranged on one side of the sealing cover.

[0008] Preferably, the module gland further comprises fixing screws with threads arranged at the four corners of the cover.

[0009] Preferably, the power batteries are arranged in four rows and six columns, with forward batteries and reverse batteries arranged according to their placement positions.

[0010] Preferably, the series-parallel bottom plate comprises a rectangular plate fixed to the inner bottom surface of the outer frame shell, and parallel power-on plates are connected and arranged inside the rectangular plate, and two groups of parallel power-on plates are provided.

[0011] Preferably, the series-parallel bottom plate further includes a series power-on plate arranged on the series-parallel bottom plate, and a series power-on plate is also arranged on the series-parallel upper pressure plate.

[0012] Preferably, the series-parallel base plate further includes an external interface block connected to the parallel power-on board.

[0013] Preferably, the series-parallel bottom plate is connected to a battery plug-in block corresponding to the power battery and is provided with a battery socket, and the series-parallel upper pressure plate is also connected to a battery plug-in block corresponding to the power battery and is provided with a battery socket.

[0014] Preferably, a battery positioning opening is provided at the upper end of the battery positioning frame, the battery positioning opening is provided in four rows and six columns, and a built-in heat dissipation opening is provided on the side wall of the battery positioning opening.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model provides a new energy vehicle extended-range power battery module, which is fixed by the mutual extrusion between the battery module fixed outer frame, the module cover and the battery series-parallel mechanism, so that the module outer frame is fixed by screws without welding. This solves the problem in the prior art that the module outer frame needs to be welded together to ensure that the components reach a reasonable welding level.

[0017] 2. The utility model provides a new energy vehicle extended-range power battery module, which realizes the arrangement of the power-on plate inside the series-parallel bottom plate and the series-parallel upper pressure plate through the arrangement of the series-parallel bottom plate and the series-parallel upper pressure plate in the battery series-parallel mechanism, thereby ensuring the stability of the circuit connection and solving the problem of unstable connection of the original batteries in the prior art where the batteries are connected through external wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall opening structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall split structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the split structure of the battery series-parallel mechanism of the utility model;

[0022] Figure 5 This is a structural diagram of the series-parallel base plate of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the series-parallel bottom plate and the series-parallel upper pressure plate of the utility model.

[0024] In the figure: 1. Battery module fixing frame; 11. Outer frame shell; 111. Connector fixing port; 112. External heat dissipation vent; 12. Triangular heat sink; 2. Module pressure cover; 21. Sealing cover; 22. Block; 23. Fixing screw; 3. Battery series-parallel mechanism; 31. Series-parallel bottom plate; 311. Rectangular plate; 312. Parallel power board; 313. External interface block; 314. Series power board; 315. Battery socket; 316. Battery plug block; 32. Battery positioning frame; 321. Built-in heat dissipation vent; 322. Battery positioning port; 33. Power battery; 331. Forward battery; 332. Reverse battery; 34. Series-parallel upper pressure plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0026] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0027] Combine Figure 1The utility model relates to a new energy vehicle extended-range power battery module, comprising a battery module fixed outer frame 1, the upper end of the battery module fixed outer frame 1 is threadedly connected to a module pressure cover 2, the interior of the battery module fixed outer frame 1 is fixedly provided with a battery series-parallel mechanism 3, the battery module fixed outer frame 1 comprises an outer frame shell 11, a triangular heat sink 12 fixedly arranged inside the outer frame shell 11, the battery series-parallel mechanism 3 comprises a series-parallel bottom plate 31, a battery positioning frame 32 fixedly arranged on one side of the series-parallel bottom plate 31, a power battery 33 placed inside the battery positioning frame 32, and a series-parallel upper pressure plate 34 arranged on the upper end of the power battery 33, the module pressure cover 2 comprises a screw threaded connection on the outer frame shell 11 for The cover 21 of the series-parallel upper pressure plate 34 is pressed, the outer frame shell 11 and the cover 21 are fixed with threads, and the battery series-parallel mechanism 3 is fixedly pressed inside. The triangular heat sinks 12 are dispersedly arranged on the inner wall of the outer frame shell 11 to facilitate heat dissipation. The series-parallel bottom plate 31 and the battery positioning frame 32 are fixedly connected to each other. After the power battery 33 is placed, the series-parallel upper pressure plate 34 is covered on the upper end. The series-parallel bottom plate 31 and the series-parallel upper pressure plate 34 are provided with connecting power plates to complete the four groups of series and six groups of parallel battery modules. The setting of this structure enables the outer frame of the module to be fixed by screws without the need for welding as a whole, and the power plate is arranged inside the series-parallel bottom plate 31 and the series-parallel upper pressure plate 34 to ensure the stability of the circuit connection.

[0028] The present invention will be further described below with reference to the embodiments.

[0029] Example 1:

[0030] Combine Figure 2 and Figure 3 A connector fixing port 111 is provided on one side of the outer frame shell 11, and external heat dissipation ports 112 are provided around the outer frame shell 11. An external interface block 313 is inserted into the external heat dissipation port 112. The position of the external heat dissipation port 112 corresponds to the center of the triangular heat sink 12, which dissipates heat while preventing dust from entering the battery module.

[0031] The module cover 2 also includes a block 22 fixedly set on one side of the cover 21. The position of the block 22 corresponds to the triangular heat sink 12. When the cover 21 is in contact with the battery positioning frame 32, the block 22 is inserted into the upper end of the triangular heat sink 12 to ensure that the fixed position does not shift.

[0032] The module gland 2 further includes fixing screws 23 threadedly disposed at the four corners of the cover 21 , and the fixing screws 23 are configured to securely connect the cover 21 and the outer frame 11 .

[0033] Example 2:

[0034] Combine Figure 4-Figure 6The power batteries 33 are arranged in four rows and six columns, and are provided with forward batteries 331 and reverse batteries 332 according to their placement positions. The four rows are respectively provided with forward batteries 331, reverse batteries 332, forward batteries 331, and reverse batteries 332.

[0035] The series-parallel base plate 31 includes a rectangular plate 311 fixed to the inner bottom surface of the outer frame shell 11, and a parallel power-on plate 312 is connected inside the rectangular plate 311. There are two groups of parallel power-on plates 312, and the two groups of parallel power-on plates 312 are respectively connected to the two outer power batteries 33 to realize the parallel connection of the power batteries 33.

[0036] The series-parallel base plate 31 also includes a series power-on plate 314 arranged on the series-parallel base plate 31, and a series power-on plate 314 is also arranged on the series-parallel upper pressure plate 34. There is a row of series power-on plates 314 on the series-parallel base plate 31, and two rows of series power-on plates 314 on the series-parallel upper pressure plate 34. The three rows of series power-on plates 314 cooperate to complete the series connection of the four power batteries 33.

[0037] The series-parallel base plate 31 further includes an external interface block 313 connected to the parallel power-on board 312 , and two groups of external interface blocks 313 are respectively connected to the positive and negative electrode interfaces of the external battery.

[0038] The series-parallel bottom plate 31 is connected to a battery plug-in block 316 corresponding to the power battery 33 and is provided with a battery socket 315. The series-parallel upper pressure plate 34 is also connected to a battery plug-in block 316 corresponding to the power battery 33 and is provided with a battery socket 315. The battery socket 315 and the battery plug-in block 316 are respectively connected to the positive and negative poles of the battery.

[0039] The upper end of the battery positioning frame 32 is provided with a battery positioning opening 322 , which is arranged in four rows and six columns. The side wall of the battery positioning opening 322 is provided with a built-in heat dissipation opening 321 for heat dissipation. The battery positioning opening 322 is used to place the power battery 33 .

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle extended-range power battery module, comprising a battery module fixed outer frame (1), characterized in that: The upper end of the battery module fixed outer frame (1) is threadedly connected to a module gland (2), and a battery series-parallel mechanism (3) is fixedly provided inside the battery module fixed outer frame (1); The battery module fixed outer frame (1) includes an outer frame shell (11), a triangular heat sink (12) fixedly arranged inside the outer frame shell (11), a battery series-parallel mechanism (3) includes a series-parallel bottom plate (31), a battery positioning frame (32) fixedly arranged on one side of the series-parallel bottom plate (31), a power battery (33) placed inside the battery positioning frame (32), and a series-parallel upper pressure plate (34) arranged on the upper end of the power battery (33). The module pressure cover (2) includes a cover (21) threadedly connected to the outer frame shell (11) for pressing the series-parallel upper pressure plate (34).

2. The new energy vehicle range-extended power battery module according to claim 1, characterized in that: A connector fixing opening (111) is provided on one side of the outer frame shell (11), and external heat dissipation openings (112) are provided around the outer frame shell (11).

3. The new energy vehicle range-extended power battery module according to claim 1, characterized in that: The module press cover (2) further comprises a clamping block (22) fixedly arranged on one side of the sealing cover (21).

4. The new energy vehicle range-extended power battery module according to claim 1, characterized in that: The module gland (2) further comprises fixing screws (23) threadedly arranged at the four corners of the sealing cover (21).

5. The new energy vehicle range-extended power battery module according to claim 1, characterized in that: The power batteries (33) are arranged in four rows and six columns, and are provided with forward batteries (331) and reverse batteries (332) according to placement positions.

6. The new energy vehicle range-extended power battery module according to claim 1, characterized in that: The series-parallel bottom plate (31) comprises a rectangular plate (311) arranged on the inner bottom surface of the fixed outer frame shell (11), and a parallel power-on plate (312) is connected and arranged inside the rectangular plate (311), and two groups of parallel power-on plates (312) are provided.

7. The new energy vehicle range-extended power battery module according to claim 1, characterized in that: The series-parallel bottom plate (31) further includes a series-connected power-on plate (314) arranged on the series-parallel bottom plate (31), and a series-connected power-on plate (314) is also arranged on the series-parallel upper pressure plate (34).

8. The new energy vehicle range-extended power battery module according to claim 1, characterized in that: The series-parallel base plate (31) further includes an external interface block (313) connected to the parallel power-on plate (312).

9. The new energy vehicle range-extended power battery module according to claim 1, characterized in that: The series-parallel bottom plate (31) is connected to a battery plug-in block (316) corresponding to the power battery (33) and is provided with a battery socket (315). The series-parallel upper pressure plate (34) is also connected to a battery plug-in block (316) corresponding to the power battery (33) and is provided with a battery socket (315).

10. The new energy vehicle range-extended power battery module according to claim 1, characterized in that: The upper end of the battery positioning frame (32) is provided with a battery positioning opening (322), the battery positioning opening (322) is provided with four rows and six columns, and the side wall of the battery positioning opening (322) is provided with a built-in heat dissipation opening (321).

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