Novel output stage base and battery module

Abstract

The utility model relates to the technical field of batteries, in particular to a novel output stage base and a battery module, which comprise a bottom shell, a rectangular mounting cavity with an open top is arranged on the bottom shell, and a nut is embedded at the bottom of the mounting cavity; the four side walls of the mounting cavity are each provided with a rectangular notch with an opening in the top, and the notches transversely penetrate through the side walls, at the corresponding positions, of the mounting cavity; reinforcing ribs are arranged on the two sides of the interior of the notch. According to the utility model, the four side walls of the mounting cavity are respectively provided with one rectangular notch with the open top, so that the output stage base is provided with four mounting grooves in different directions, the mounting of the conducting bar is facilitated, the design length of the conducting bar can be reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a novel output stage base and a battery module. Background Art

[0002] In a battery pack or battery module, in order to fix the busbar of each battery cell or battery module to the external conductive bar and prevent the busbar and the conductive bar from loosening, an output pole base is usually provided for fixing the busbar and the conductive bar.

[0003] Publication No. CN220341455U discloses an output stage base and a battery pack, wherein the output stage base includes a bottom shell provided with a mounting cavity with an open top; a mounting seat provided in the mounting cavity, and the mounting seat is adjustable in position along the X-direction and Z-direction of the bottom shell; a connecting portion used to connect the output stage bus bar of the battery module and the external conductive bus, and the connecting portion is slidably provided on the mounting seat along the Y-direction of the bottom shell.

[0004] In the existing battery module, the output stage base is installed on the crossbeam of the battery box, and the busbar and the conductive bar on the battery cell are fixed to the holes of the output stage base by bolts. When the position and structure of the output stage base and the busbar are fixed, the position direction of the conductive bar inserted and installed on the output stage base is also fixed. When the space position is limited, the single installation direction on the output stage base will bring certain difficulties to the design direction of the conductive bar, resulting in a longer conductive bar structure, thereby increasing additional costs. In order to solve this technical problem, it is necessary to provide a new output stage base and battery module. Utility Model Content

[0005] In view of this, the utility model proposes a novel output stage base and battery module, which has a rectangular slot with an open top on each of the four side walls of the installation cavity, so that the output stage base has four installation slots in different directions, which is convenient for the installation of the conductive bar, can reduce the design length of the conductive bar, and reduce the cost.

[0006] The technical solution of the utility model is achieved in this way:

[0007] On the one hand, the utility model provides a novel output stage base, including a bottom shell, wherein:

[0008] The bottom shell is provided with a rectangular installation cavity with an open top, and a nut is embedded at the bottom of the installation cavity;

[0009] Each of the four side walls of the installation cavity is provided with a rectangular notch with an open top, wherein:

[0010] The notch passes through the side wall of the installation cavity at the corresponding position in the transverse direction;

[0011] Reinforcing ribs are arranged on both sides of the interior of the notch.

[0012] On the basis of the above technical solution, preferably, the bottom shell is provided with two sinking grooves with open tops, and the two sinking grooves are symmetrically arranged on both sides of the installation cavity, wherein:

[0013] The vertical distance between the bottom of the installation cavity and the bottom of the bottom shell is greater than the vertical distance between the bottom of the sink and the bottom of the bottom shell;

[0014] One end opposite to the two sinks is connected to the installation cavity through the notch at the corresponding position, and one end opposite to the two sinks is open;

[0015] A rivet installation hole is vertically provided at the bottom of the sink.

[0016] On the basis of the above technical solution, preferably, a snap-on mounting hole is provided through the side of the sink in a transverse direction.

[0017] On the basis of the above technical solution, preferably, a first weight-reducing groove is provided at the bottom of the bottom shell at a position corresponding to the installation cavity, and a second weight-reducing groove is provided at the bottom of the installation cavity, wherein:

[0018] The second weight-reducing groove corresponds to the first weight-reducing groove up and down.

[0019] On the basis of the above technical solution, preferably, it further includes a positioning column, wherein:

[0020] The positioning column is fixedly arranged on the bottom of the bottom shell.

[0021] On the other hand, the utility model also provides a battery module, including the above-mentioned output stage base, and also including a bottom plate, a battery box longitudinal beam, a battery box cross beam, a battery cell, a bus bar and a conductive bar, wherein:

[0022] The battery box longitudinal beam and the battery box cross beam are fixed on the top of the bottom plate, and the battery box longitudinal beam and the battery box cross beam are arranged in an L shape;

[0023] The battery cell is fixedly arranged on the top of the bottom plate and between the longitudinal beam of the battery box and the cross beam of the battery box;

[0024] One end of the busbar is connected to the electrode of the battery cell, and the other end enters the installation cavity through the notch;

[0025] The conductive bar is placed on the top of the battery box crossbeam, and one end of the conductive bar enters the installation cavity through the notch;

[0026] One end of the bus bar located inside the installation cavity and one end of the conductive bar located inside the installation cavity are stacked up and down and fixed on the nut by bolts.

[0027] On the basis of the above technical solution, preferably, a downwardly recessed mounting plane is provided at the top of the battery box cross beam near one end of the battery box longitudinal beam, and the bottom shell is fixed to the mounting plane by rivets.

[0028] On the basis of the above technical solution, preferably, a positioning hole is vertically arranged on the installation plane, and the positioning hole and the positioning column are plugged in up and down.

[0029] On the basis of the above technical solution, preferably, it further comprises an upper cover, wherein:

[0030] The upper cover is buckled on the top of the bottom shell.

[0031] On the basis of the above technical solution, preferably, a buckle is provided at the bottom of the upper cover, and the lower end of the buckle is engaged in the buckle mounting hole.

[0032] Compared with the prior art, the new output stage base and battery module of the utility model have the following advantages:

[0033] Beneficial effects:

[0034] (1) By providing a rectangular slot with an open top on each of the four side walls of the mounting cavity, the output stage base has mounting slots in four different directions, namely, front, rear, left, and right, which facilitates the installation of the conductive bar, reduces the design length of the conductive bar, and reduces the cost. For example, when the output stage base is installed on the crossbeam of the battery box, the busbar on the battery cell is inserted into the mounting cavity from the mounting slot at the rear. At this time, the conductive bar can be inserted into the mounting cavity from the mounting slot on the left and right sides in addition to being inserted into the mounting cavity through the mounting slot at the front. Therefore, there are three directions on the output stage base for the conductive bar to use, so that the optimal direction can be selected to design the style of the conductive bar when designing the conductive bar.

[0035] (2) The reinforcement ribs are provided to improve the structural strength of the output stage base. When the bolts are tightened, the pressure and shear force transmitted by the nuts can be evenly distributed, thereby preventing the output stage base from being cracked due to excessive local force. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A three-dimensional diagram of a novel output stage base of the utility model;

[0038] Figure 2 A three-dimensional diagram of a novel output stage base of the utility model from another perspective;

[0039] Figure 3 A three-dimensional diagram of a battery module of the utility model;

[0040] Figure 4 for Figure 3 A magnified image of point A;

[0041] Figure 5 for Figure 3 Partial exploded view of

[0042] Figure 6 It is a schematic diagram of the connection structure between the bottom shell and the upper cover;

[0043] Figure 7 A three-dimensional diagram of the upper cover;

[0044] In the figure: 1. bottom shell; 2. bottom plate; 3. battery box longitudinal beam; 4. battery box cross beam; 5. battery cell; 6. bus bar; 7. conductive bar; 8. upper cover; 11. positioning column; 101. mounting cavity; 102. nut; 103. notch; 104. reinforcing rib; 105. countersunk groove; 106. rivet mounting hole; 107. buckle mounting hole; 108. first weight-reducing groove; 109. second weight-reducing groove; 401. mounting plane; 402. positioning hole; 801. buckle. DETAILED DESCRIPTION

[0045] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] like Figure 1-7 As shown, a new type of output stage base of the utility model comprises a bottom shell 1, wherein a rectangular mounting cavity 101 with an open top is arranged on the bottom shell 1, and a rectangular slot 103 with an open top is arranged on each of the four side walls of the mounting cavity 101, and the slot 103 passes through the side wall of the mounting cavity 101 at the corresponding position in the transverse direction. The four slots 103 enable the output stage base to have mounting slots in four different directions, namely, front, rear, left and right, so as to facilitate the installation of the conductive bar 7, reduce the design length of the conductive bar 7, and reduce the cost.

[0047] like Figure 3 As shown, when the output stage base is installed on the battery box crossbeam 4, the bus bar 6 on the battery cell is inserted into the mounting cavity 101 from the mounting slot at the rear. At this time, in addition to being inserted into the mounting cavity 101 through the mounting slot at the front, the conductive bar 7 can also be inserted into the mounting cavity 101 from the mounting slots on the left and right sides. Therefore, there are three directions on the output stage base for the conductive bar 7 to use, so when designing the conductive bar 7, the optimal direction can be selected to design the style of the conductive bar 7.

[0048] After the conductive bar 7 and the bus bar 6 are inserted into the installation cavity 101, they are fixed in the installation cavity 101 by bolts. Specifically, a nut 102 is embedded at the bottom of the installation cavity 101, and the nut 102 is used to screw the bolts. Figure 4 As shown, a through hole for passing a bolt is provided on one end of the conductive bar 7 and the bus bar 6 inserted into the installation cavity 101. When the conductive bar 7 and the bus bar 6 are inserted into the installation cavity 101, the through holes on the conductive bar 7 and the bus bar 6 are aligned with the holes of the nut 102 up and down. At this time, the bolt is inserted into the through hole and screwed into the nut 102, and one end of the conductive bar 7 and the bus bar 6 is fixed in the installation cavity 101 by the bolt.

[0049] To improve the strength of the output stage base, such as Figure 1 As shown, reinforcing ribs 104 are provided on both sides of the interior of the notch 103 .

[0050] The output stage base is mounted on the battery box crossbeam 4 by rivets. Specifically, two sink grooves 105 with open tops are provided on the bottom shell 1, and the two sink grooves 105 are symmetrically arranged on both sides of the installation cavity 101, wherein the vertical distance between the bottom of the installation cavity 101 and the bottom of the bottom shell 1 is greater than the vertical distance between the bottom of the sink groove 105 and the bottom of the bottom shell 1, so that the design height of the installation cavity 101 is greater than the design height of the sink groove 105. In addition, the opposite ends of the two sink grooves 105 are connected to the installation cavity 101 through the notches 103 at the corresponding positions, and the opposite ends of the two sink grooves 105 are open, and rivet installation holes 106 are vertically penetrated at the bottom of the sink grooves 105.

[0051] When the above output stage base needs to be installed, such as Figure 4-5 As shown, a rivet is inserted into the rivet mounting hole 106 and riveted to the battery box crossbeam 4 to achieve installation and fixation of the output stage base.

[0052] To achieve insulation, the output stage base is made of flame-retardant plastic injection molding, wherein, to reduce the weight of the output stage base, such as Figure 1-2As shown, a first weight-reducing groove 108 is provided at the bottom of the bottom shell 1 at a position corresponding to the mounting cavity 101 , and a second weight-reducing groove 109 is provided at the bottom of the mounting cavity 101 , and the second weight-reducing groove 109 corresponds to the first weight-reducing groove 108 up and down.

[0053] The output stage base is applied in a battery module, which further includes a bottom plate 2 , a battery box longitudinal beam 3 , a battery box cross beam 4 , a battery cell 5 , a bus bar 6 and a conductive bar 7 .

[0054] Among them, Figure 3 As shown, the battery box longitudinal beam 3 and the battery box cross beam 4 are both square tube structures, both are fixed on the top of the bottom plate 2, and both are arranged in an L shape;

[0055] A number of battery cells 5 are arranged side by side, and the battery cells 5 are fixed on the top of the bottom plate 2 and located between the battery box longitudinal beam 3 and the battery box cross beam 4, that is, located on the inner side of the L shape, and then the electrodes of the battery cells 5 are electrically connected.

[0056] One end of the busbar 6 is fixed to an electrode of a battery cell 5 close to the longitudinal beam 3 of the battery box, and the other end passes through one of the notches 103 of the installation cavity 101 to the interior of the installation cavity 101 .

[0057] The conductive bar 7 is placed on the top of the battery box crossbeam 4, with one end of it being used to connect to the external circuit of the module, and the other end passing through another slot 103 of the mounting cavity 101 to the inside of the mounting cavity 101. The position of this end is adjusted so that the conductive bar 7 is at the top of the bus bar 6, that is, one end of the bus bar 6 inside the mounting cavity 101 and one end of the conductive bar 7 inside the mounting cavity 101 are stacked up and down, and then the two are fixed to the nut 102 by bolts to achieve the installation and fixation of the bus bar 6 and the conductive bar 7.

[0058] In order to prevent the output stage base from interfering with the battery pack accessories above the module, it is necessary to lower the installation height of the output stage base. For this purpose, a downwardly recessed installation plane 401 is provided at the top of the battery box cross beam 4 near one end of the battery box longitudinal beam 3. The bottom shell 1 is fixed to the installation plane 401 by rivets, and the installation height of the output stage base is reduced by the installation plane 401.

[0059] During the installation process, in order to achieve the installation positioning of the output stage base, two positioning holes 402 are vertically arranged on the installation plane 401. At the same time, two positioning columns 11 are fixedly arranged at the bottom of the bottom shell 1, wherein the two positioning holes 402 and the two positioning columns 11 correspond one to each other up and down, and the positioning holes 402 and the corresponding positioning columns 11 are plugged in and matched up and down to achieve positioning. In addition, holes for installing rivets are also provided on the installation plane 401. When installing the rivets, the lower end of the rivet is embedded in the hole.

[0060] After the busbar 6 and the conductive bar 7 are installed, an upper cover 8 is buckled on the top of the bottom shell 1 to achieve protection. Specifically, Figure 6-7 As shown, a snap-on mounting hole 107 is provided on the side of the sink 105 along the horizontal direction, and a snap-on 801 is provided on the bottom of the upper cover 8, and the lower end of the snap-on mounting hole 107 is engaged in the snap-on mounting hole 107, wherein four snap-on mounting holes 107 and four snap-on 801 are provided respectively, and the four snap-on mounting holes 107 and the four snap-on 801 correspond to each other one by one and cooperate with each other up and down.

[0061] The method of using a novel output stage base and a battery module of the utility model is as follows:

[0062] When installing the output stage base, the positioning column 11 is inserted into the buckle mounting hole 107 to achieve positioning of the output stage base. Thereafter, a rivet is installed in the rivet mounting hole 106 to fix the output stage base on the mounting plane 401 .

[0063] Fix the battery cell 5 on the bottom plate 2, then insert the busbar 6 into the mounting cavity 101 from the mounting slot at the rear, and insert the conductive bar 7 into the mounting cavity 101 from the mounting slot on the right. After insertion, use bolts to fix the insertion ends of the two on the nuts 102, and finally buckle the upper cover 8 on the top of the output stage base.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel output stage base, comprising a bottom shell (1), wherein: The bottom shell (1) is provided with a rectangular installation cavity (101) with an open top, and a nut (102) is embedded at the bottom of the installation cavity (101); The invention is characterized in that: each of the four side walls of the installation cavity (101) is provided with a rectangular notch (103) with an open top, wherein: The notch (103) penetrates the side wall of the installation cavity (101) at a corresponding position in the transverse direction; Reinforcing ribs (104) are provided on both sides of the interior of the notch (103).

2. A novel output stage base as claimed in claim 1, characterized in that: The bottom shell (1) is provided with two sinking grooves (105) with open tops, and the two sinking grooves (105) are symmetrically arranged on both sides of the installation cavity (101), wherein: The vertical distance between the bottom of the installation cavity (101) and the bottom of the bottom shell (1) is greater than the vertical distance between the bottom of the sink (105) and the bottom of the bottom shell (1); One end opposite to the two sink grooves (105) is connected to the installation cavity (101) through the notch (103) at the corresponding position, and one end opposite to the two sink grooves (105) is open; A rivet installation hole (106) is vertically provided at the bottom of the sink (105).

3. A novel output stage base as claimed in claim 2, characterized in that: A buckle installation hole (107) is provided through the side of the sink (105) in the transverse direction.

4. A novel output stage base as claimed in claim 1, characterized in that: A first weight-reducing groove (108) is provided at the bottom of the bottom shell (1) at a position corresponding to the installation cavity (101), and a second weight-reducing groove (109) is provided at the bottom of the installation cavity (101), wherein: The second weight-reducing groove (109) corresponds to the first weight-reducing groove (108) vertically.

5. A novel output stage base as claimed in claim 3, characterized in that: It also includes a positioning column (11), wherein: The positioning column (11) is fixedly arranged on the bottom of the bottom shell (1).

6. A battery module, characterized in that: The output stage base according to claim 5 further comprises a bottom plate (2), a battery box longitudinal beam (3), a battery box cross beam (4), a battery cell (5), a bus bar (6) and a conductive bar (7), wherein: The battery box longitudinal beam (3) and the battery box cross beam (4) are fixed on the top of the bottom plate (2), and the battery box longitudinal beam (3) and the battery box cross beam (4) are arranged in an L shape; The battery core (5) is fixedly arranged on the top of the bottom plate (2) and is located between the battery box longitudinal beam (3) and the battery box cross beam (4); One end of the busbar (6) is connected to the electrode of the battery cell (5), and the other end enters the installation cavity (101) through the notch (103); The conductive bar (7) is placed on the top of the battery box crossbeam (4), and one end of the conductive bar (7) enters the installation cavity (101) through the notch (103); One end of the busbar (6) located inside the installation cavity (101) and one end of the conductive bar (7) located inside the installation cavity (101) are stacked up and down and fixed to the nut (102) by bolts.

7. A battery module according to claim 6, characterized in that: A downwardly recessed mounting plane (401) is provided at the top of the battery box cross beam (4) close to one end of the battery box longitudinal beam (3), and the bottom shell (1) is fixed on the mounting plane (401) by means of rivets.

8. A battery module according to claim 7, characterized in that: A positioning hole (402) is vertically arranged on the installation plane (401), and the positioning hole (402) and the positioning column (11) are plugged in up and down.

9. A battery module according to claim 6, characterized in that: It also includes an upper cover (8), wherein: The upper cover (8) is buckled onto the top of the bottom shell (1).

10. A battery module according to claim 9, characterized in that: A buckle (801) is provided at the bottom of the upper cover (8), and the lower end of the buckle (801) is engaged in the buckle mounting hole (107).

Images