Duralumin bar for new energy battery module cell connection

Abstract

The utility model relates to the technical field of new energy battery connection, in particular to a duralumin bar for new energy battery module battery cell connection, which can enable a plurality of groups of duralumin bars to be adjacently connected according to actual battery cell connection requirements so as to adapt to multi-battery cell power supply and improve practicability. Comprising a duralumin bar body, a duralumin bar connecting auxiliary body, a limiting movable groove, first penetrating holes, second penetrating holes, an embedding groove, an inner nut, a fixing bolt, a limiting base and a blocking piece, the upper side of the right end of the duralumin bar body is connected with the lower side of the left end of the duralumin bar connecting auxiliary body, and the front side and the rear side of the left end of the duralumin bar body are each provided with a set of second penetrating holes; a caulking groove is formed in the lower side of the second penetrating hole of the duralumin bar body, the top end of the interior of the caulking groove is connected with the top end of the inner nut, the left middle side of the top end of the duralumin bar body is connected with the bottom end of the limiting base, and the fixing bolt penetrates through the first penetrating hole and the second penetrating hole to be detachably screwed to the inner side of the inner nut. A hot melting structure is arranged in the middle of the duralumin bar body.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy battery connection, in particular to a hard aluminum bar for connecting battery cells of a new energy battery module. Background Technique

[0002] With the development of the times, modern cars are gradually evolving from engines to new energy. At present, the relatively mature technology in the new energy field is to use new energy batteries to drive motors to operate. The connection between battery modules usually requires the use of hard aluminum bars with good electrical conductivity for connection. There are deficiencies in the use of traditional hard aluminum bar devices that need to be improved.

[0003] The existing patent document CN214753620U discloses a fuseable current-limiting aluminum bar structure. The new type is small in volume, low in cost, can withstand a large current density, and has strong practicability. By adopting the structure of embedding an aluminum bar and an alloy, the temperature rise of the aluminum bar body can be ensured within the allowable range under normal working conditions. Under abnormal working conditions, the alloy block melts and separates first, resulting in a rapid increase in the temperature of the aluminum bar body and then melting, which can shorten the melting time of the aluminum bar under short-circuit conditions. By adopting the structure of embedding an aluminum bar and an alloy, a thermal fuse body is formed, which can replace the fuse and reduce the size space occupied by the fuse. The number of mounting holes on the aluminum bar body can be flexibly designed according to the actual product requirements, and the melting speed during overload can also be adjusted. The structure design is ingenious.

[0004] However, this module is single, not convenient for combined installation, has a small application range, and lacks practicability. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a hard aluminum bar for connecting battery cells of a new energy battery module, which can make multiple groups of hard aluminum bars adjacent to each other for connection according to the actual connection requirements of battery cells, so as to adapt to the use of multiple battery cells for power supply and improve practicability.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solutions: A hard aluminum bar for connecting battery cells of a new energy battery module, comprising a hard aluminum bar body, a hard aluminum bar connection auxiliary body, a limit moving slot, a first through hole, a second through hole, an embedded groove, an internal nut, a fixing bolt, a limit seat and a retaining piece. The upper side of the right end of the hard aluminum bar body is connected to the lower side of the left end of the hard aluminum bar connection auxiliary body. A set of second through holes are respectively arranged on the front and rear sides of the left end of the hard aluminum bar body. An embedded groove is arranged below the second through hole of the hard aluminum bar body. The top end of the embedded groove is connected to the top end of the internal nut. The middle left side of the top end of the hard aluminum bar body is connected to the bottom end of the limit seat. The top end of the limit seat is connected to the middle of the bottom end of the retaining piece. A set of first through holes are respectively arranged on the front and rear sides of the middle of the hard aluminum bar connection auxiliary body. The fixing bolt passes through the first through hole and the second through hole and is detachably screwed to the inner side of the internal nut. A limit moving slot is arranged in the middle of the hard aluminum bar connection auxiliary body. A heat melting structure is arranged in the middle of the hard aluminum bar body.

[0009] Preferably, the heat melting structure includes a heat melting installation groove and a heat melting metal body. The middle of the hard aluminum bar body is provided with a heat melting installation groove, and the heat melting metal body is installed in the heat melting installation groove.

[0010] Preferably, multiple groups of the heat melting installation groove and the heat melting metal body are arranged on the hard aluminum bar body.

[0011] Preferably, the heat melting metal body is flush with the top end of the hard aluminum bar body inside the hard aluminum bar body, and the bottom end of the heat melting metal body is flush with the bottom surface of the hard aluminum bar body.

[0012] Preferably, it further includes a ring sticking strip. A ring sticking strip is arranged on the bottom ring side of the middle of the heat melting metal body.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the present utility model provides a hard aluminum bar for connecting battery cells of a new energy battery module, having the following beneficial effects:

[0015] Multiple groups can be set according to requirements. The adjacent left hard aluminum bar connection auxiliary body is snapped into the limit seat of the right hard aluminum bar body according to the limit moving slot. Under the constraint of the top side of the retaining piece, the hard aluminum bar body and the hard aluminum bar connection auxiliary body are fitted. When the limit moving slot reaches the outside of the limit seat, the second through hole and the corresponding first through hole on the same side are aligned. Then, the fixing bolt can be passed through the first through hole, inserted into the second through hole, and screwed and tightened on the inner side of the internal nut, so that the adjacent hard aluminum bar body and the hard aluminum bar connection auxiliary body are fixed. According to the actual battery cell connection requirements, multiple groups of hard aluminum bars can be adjacently connected, so as to adapt to the use of multiple battery cells for power supply, improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric view of the structural schematic diagram of the present utility model;

[0017] Figure 2For the present utility model Figure 1 Front view;

[0018] Figure 3 For the present utility model Figure 1 Bottom view;

[0019] Figure 4 For the present utility model Figure 1 Right view.

[0020] Reference numerals in the drawings: 1, hard aluminum bar body; 2, hard aluminum bar connection auxiliary body; 3, limit moving groove; 4, perforation one; 5, perforation two; 6, embedding groove; 7, inner nut; 8, fixing bolt; 9, limit seat; 10, retaining piece; 11, hot melt installation groove; 12, hot melt metal body; 13, ring sticking strip. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment

[0023] Please refer to Figures 1-4, A hard aluminum bar for connecting battery cells of a new energy battery module, including a hard aluminum bar body 1, a hard aluminum bar connection auxiliary body 2, a limit activity groove 3, a first perforation 4, a second perforation 5, an embedding groove 6, an inner nut 7, a fixing bolt 8, a limit seat 9 and a retaining piece 10. The upper side of the right end of the hard aluminum bar body 1 is connected to the lower side of the left end of the hard aluminum bar connection auxiliary body 2. A set of second perforations 5 are respectively arranged on the front and rear sides of the left end of the hard aluminum bar body 1. The lower side of the second perforation 5 of the hard aluminum bar body 1 is provided with an embedding groove 6. The top end inside the embedding groove 6 is connected to the top end of the inner nut 7. The middle left side of the top end of the hard aluminum bar body 1 is connected to the bottom end of the limit seat 9. The top end of the limit seat 9 is connected to the middle of the bottom end of the retaining piece 10. A set of first perforations 4 are respectively arranged on the front and rear sides of the middle of the hard aluminum bar connection auxiliary body 2. The fixing bolt 8 passes through the first perforation 4 and the second perforation 5 and is detachably screwed to the inner side of the inner nut 7. A limit activity groove 3 is arranged in the middle of the hard aluminum bar connection auxiliary body 2. A hot melt structure is arranged in the middle of the hard aluminum bar body 1; Multiple groups can be set according to requirements. The adjacent left hard aluminum bar connection auxiliary body 2 is snapped into the limit seat 9 of the right hard aluminum bar body 1 according to the limit activity groove 3. Under the restraint of the top side of the retaining piece 10, the hard aluminum bar body 1 and the hard aluminum bar connection auxiliary body 2 are fitted. When the limit activity groove 3 reaches the outside of the limit seat 9, the second perforation 5 corresponds to the first perforation 4 on the same side. Then, the fixing bolt 8 can be passed through the first perforation 4, inserted into the second perforation 5, and screwed and tightened on the inner side of the inner nut 7, so that the adjacent hard aluminum bar body 1 and the hard aluminum bar connection auxiliary body 2 are fixed.

[0024] The hot melt structure includes a hot melt installation groove 11 and a hot melt metal body 12. The hot melt installation groove 11 is arranged in the middle of the hard aluminum bar body 1. The hot melt metal body 12 is installed in the hot melt installation groove 11; By installing the hot melt metal body 12 in the hot melt installation groove 11, common contact conduction with the hard aluminum bar body 1 can be formed. When a short circuit occurs, the temperature of the hot melt metal body 12 rises, causing it to melt and shrink, thereby disconnecting the connection and improving reliability.

[0025] Multiple groups of the hot melt installation groove 11 and the hot melt metal body 12 are arranged on the hard aluminum bar body 1; It can meet the contact of corresponding battery cells at different positions, avoid directly connecting to the hard aluminum bar body 1, and can be flexibly designed according to the actual product requirements. Furthermore, it can also adjust the fusing speed during overload, improving practicality.

[0026] The hot melt metal body 12 is flush with the top end of the hard aluminum bar body 1 inside the hard aluminum bar body 1, and the bottom end of the hot melt metal body 12 is flush with the bottom surface of the hard aluminum bar body 1; On the basis of being flush, it does not affect the contact between the battery cell and the hard aluminum bar body 1 and the hot melt metal body 12, improving reliability.

[0027] It further includes a ring sticking strip 13. A ring sticking strip 13 is arranged on the bottom ring side of the middle of the hot melt metal body 12; Through the ring sticking strip 13, after the hot melt metal body 12 is installed in the hot melt installation groove 11, bottom-side bonding can be carried out to avoid movement and improve reliability.

[0028] In summary, when a hard aluminum bar for connecting battery cells of a new energy battery module is in use, multiple groups can be set according to requirements. The adjacent left hard aluminum bar connection auxiliary body 2 is inserted into the limit seat 9 of the right hard aluminum bar body 1 according to the limit activity groove 3. Under the restraint of the top side of the retaining piece 10, the hard aluminum bar body 1 and the hard aluminum bar connection auxiliary body 2 are fitted together. When the limit activity groove 3 reaches the outside of the limit seat 9, the second through hole 5 corresponds to the first through hole 4 on the same side. Then, the fixing bolt 8 can be passed through the first through hole 4 and inserted into the second through hole 5, and screwed and tightened inside the inner nut 7, so that the adjacent hard aluminum bar body 1 and the hard aluminum bar connection auxiliary body 2 are fixed. Then, according to multiple groups of hot-melt metal bodies 12, they are installed in the hot-melt installation grooves 11. After the hot-melt metal bodies 12 are installed in the hot-melt installation grooves 11 through the ring sticking strips 13, bonding can be carried out on the bottom side to avoid movement. On the basis of being flush, it does not affect the contact between the battery cell and the hard aluminum bar body 1 and the hot-melt metal body 12, and common contact conduction with the hard aluminum bar body 1 can be formed. When a short circuit occurs, the temperature of the hot-melt metal body 12 rises, causing it to melt and shrink, thereby disconnecting the connection.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hard aluminum bar for connecting battery cells in a new energy battery module, characterized in that, It includes a duralumin bar body (1), a duralumin bar connection auxiliary body (2), a limit movable groove (3), a first through hole (4), a second through hole (5), an embedded groove (6), an internal nut (7), a fixing bolt (8), a limit seat (9) and a retaining piece (10). The upper side of the right end of the duralumin bar body (1) is connected to the lower side of the left end of the duralumin bar connection auxiliary body (2). A set of second through holes (5) are respectively arranged on the front and rear sides of the left end of the duralumin bar body (1). An embedded groove (6) is arranged below the second through hole (5) of the duralumin bar body (1). The top end inside the embedded groove (6) is connected to the top end of the internal nut (7). The left middle side of the top end of the duralumin bar body (1) is connected to the bottom end of the limit seat (9). The top end of the limit seat (9) is connected to the middle part of the bottom end of the retaining piece (10). A set of first through holes (4) are respectively arranged on the front and rear sides of the middle part of the duralumin bar connection auxiliary body (2). The fixing bolt (8) passes through the first through hole (4) and the second through hole (5) and is detachably screwed to the inner side of the internal nut (7). A limit movable groove (3) is arranged in the middle part of the duralumin bar connection auxiliary body (2). A heat fusion structure is arranged in the middle part of the duralumin bar body (1).

2. The hard aluminum bar for connecting the battery cells of the new energy battery module according to claim 1, wherein: The heat fusion structure includes a heat fusion installation groove (11) and a heat fusion metal body (12). The heat fusion installation groove (11) is arranged in the middle part of the duralumin bar body (1). The heat fusion metal body (12) is installed in the heat fusion installation groove (11).

3. The hard aluminum bar for connecting battery cells of a new energy battery module according to claim 2, wherein: Multiple groups of the heat fusion installation groove (11) and the heat fusion metal body (12) are arranged on the duralumin bar body (1).

4. The hard aluminum busbar for connecting battery cells of a new energy battery module according to claim 2, characterized in that: The heat fusion metal body (12) is flush with the top end of the duralumin bar body (1) inside the duralumin bar body (1), and the bottom end of the heat fusion metal body (12) is flush with the bottom surface of the duralumin bar body (1).

5. The hard aluminum bar for connecting battery cells of a new energy battery module according to claim 2, characterized in that: It further includes a ring adhesion strip (13). The ring adhesion strip (13) is arranged on the bottom ring side of the middle part of the heat fusion metal body (12).

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