CN117458076A

CN117458076A - Bracket and electric connection assembly

Info

Publication number: CN117458076A
Application number: CN202311610875.9A
Authority: CN
Inventors: 黄之华; 陈景葱
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-01-26

Abstract

The application provides a support and electrical connection subassembly relates to battery technology field. The bracket comprises a first bracket and a second bracket. The first side of the first bracket is used for installing the CCS component, the second side is connected with the second bracket, the second bracket is provided with a first installation groove used for installing the BMS board, a groove end of the first installation groove is provided with a first notch penetrating through a first side wall of the second bracket, and the first side wall is used for being in contact with the BDU module; the first bracket is provided with a first through hole for electrically connecting the CCS component and the BMS board; the first notch is used for BMS board and BDU module electricity to be connected. This application will be used for installing the support of CCS subassembly and the support integration of installation BMS board, and with BDU module close on the BMS board setting, make the CCS subassembly can be directly with BMS board electricity be connected, and can be connected with BDU module via the BMS board, thereby make the CCS subassembly adopt one set of first output extremely both can realize voltage signal's transmission, can realize high-voltage current's output again, and then simplify the structure of electrical connector and improve assembly efficiency.

Description

Bracket and electric connection assembly

Technical Field

The application relates to the technical field of batteries, in particular to a bracket and an electric connection assembly.

Background

In the related art, the battery module outputs a high-voltage current of the battery module to an input terminal of the BDU module (Battery energy DistributionUnit, energy distribution unit) through a part of the electrical connection assembly. Meanwhile, the battery module transmits the voltage information of the battery module to a voltage acquisition end of a BM S plate (Battery Management System ) through another part of the electrical connection assembly.

The electrical connection assembly has a complex structure and low assembly efficiency due to the large number of components.

Disclosure of Invention

The embodiment of the application provides a support and an electric connection assembly, which can simplify the structure of the electric connection assembly and improve the assembly efficiency of the electric connection assembly.

In a first aspect, embodiments of the present application provide a stent comprising a first stent and a second stent; the first bracket is provided with a first side and a second side which are opposite, and the first side is used for installing the CCS component; the second bracket extends from the second side along the direction away from the first bracket, a first mounting groove for mounting the BMS plate is formed in one side of the second bracket away from the first bracket, a first notch penetrating through a first side wall of the second bracket is formed in one groove end of the first mounting groove, and the first side wall is used for being in contact with the BDU module; wherein, first side is provided with first through-hole, and first through-hole and the tank bottom intercommunication of first mounting groove, and first through-hole is used for the CCS subassembly to be connected with the BMS board electricity, and first notch is used for the BMS board to be connected with BDU module electricity.

In one embodiment, the first side is provided with a second mounting groove for mounting the CCS assembly, and the first through hole is provided at a bottom of the second mounting groove.

In an embodiment, the second mounting groove comprises a plurality of sub-grooves, and the bottom of each sub-groove is provided with a first through hole.

In an embodiment, the plurality of sub-slots are sequentially arranged along a first direction, and two ends of the sub-slots are symmetrical to each other along a second direction, and the first direction is perpendicular to the second direction.

In an embodiment, the bottom of the sub-groove is provided with a matching rib, and the matching rib is provided with a second through hole.

In an embodiment, the matching rib comprises a first section and a second section, one end of the first section is connected with the wall of the terminal slot, the other end of the first section is connected with one end of the second section, an included angle is formed between the first section and the second section, and at least part of the wall of the terminal slot, the first section and the second section enclose a hole wall of the second through hole.

In one embodiment, the angle between the first and second segments is in the range of 100 ° to 170 °.

In one embodiment, the second side is provided with two battery cell mounting areas, and the two battery cell mounting areas are respectively positioned at two sides of the second bracket; and a pole connecting hole is further formed in the first bracket from the first side to the inside of the first bracket, and the pole connecting hole is communicated with the battery cell mounting area.

In one embodiment, the first bracket and the second bracket are integrally formed.

In an embodiment, a positioning opening is formed in one end, facing away from the first support, of the first side wall, and the positioning opening is communicated with the first notch.

In an embodiment, the first bracket is provided with a plurality of glue filling through holes.

In a second aspect, embodiments of the present application also provide an electrical connection assembly including a CCS assembly, a BMS board, a BDU module, and the aforementioned rack. The CCS component is arranged on the first side; the BMS board is mounted in the first mounting groove; the BDU module is abutted against the first side wall; wherein, the electrical connection structure between CCS subassembly and BMS board is located in first through-hole, and the electrical connection structure between BMS board and the BDU module is located in first notch.

In one embodiment, the CCS assembly includes a first output pole and a plurality of bus groups; the BMS board comprises a second output electrode and a plurality of voltage acquisition ends, the first output electrode and the plurality of bus bar groups are in one-to-one correspondence with the plurality of voltage acquisition ends, the first output electrode and the plurality of bus bar groups are respectively and electrically connected with the voltage acquisition ends corresponding to the first output electrode, and the voltage acquisition end electrically connected with the first output electrode is also electrically connected with the second output electrode; the BDU module includes a first input pole electrically connected to a second output pole.

In one embodiment, the first input electrode is plugged with the second output electrode.

In one embodiment, a jack is disposed at an end of the first input pole adjacent to the second output pole, and the second output pole is inserted into the jack.

In an embodiment, the second bracket has a second side wall opposite to the first side wall, the second side wall is provided with a threading hole, and the data interface of the BMS board is opposite to the threading hole.

The beneficial effects of the embodiment of the application are that:

in the embodiment of the application, through the integration of the first support that is used for installing the CCS subassembly and the second support of installing the BMS board, and with the close BMS board setting of BDU module, thereby make be located the direct and BMS board electricity of BMS subassembly accessible first through-hole and be connected, in order to carry out voltage signal's transmission, and can make the BMS board be connected with the BMS module electricity through first notch, carry out high-voltage current's output. Therefore, on one hand, the CCS component adopts one set of first output electrode to realize the transmission of voltage signals and the output of high-voltage current, so that one set of first output electrode can be reduced, the material cost and the related installation process cost of the electric connecting piece of the battery module are finally improved, and the installation efficiency is improved. On the other hand, components such as a jumper row, bolts, a wire harness, a connector and the like and related mounting processes can be omitted, so that the structure of the electric connecting piece can be further simplified, and the mounting efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a stent provided in an embodiment of the present application;

FIG. 2 is a side view of a bracket provided by an embodiment of the present application;

FIG. 3 is a top view of a bracket provided by an embodiment of the present application;

fig. 4 is an enlarged view at a in fig. 1;

FIG. 5 is a schematic view of a bracket from a bottom view provided in an embodiment of the present application;

FIG. 6 is a schematic view of the structure of an end of a first side wall facing away from a first bracket provided in an embodiment of the present application;

FIG. 7 is a schematic structural view of an electrical connection assembly provided by an embodiment of the present application;

fig. 8 is a schematic structural view of a BMS board provided in an embodiment of the present application;

FIG. 9 is a schematic view of electrical connections between electrical components provided by embodiments of the present application;

FIG. 10 is a schematic diagram of a bus bar set according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a BDU module provided in an embodiment of the present application;

FIG. 12 is an exploded view of a BDU module provided by an embodiment of the present application;

fig. 13 is a schematic structural view of a stent at another view angle provided in an embodiment of the present application.

001-an electrical connection assembly;

011-CCS component; 111-a first output electrode; 112-bus bars; 1121-a main parallel bank; 1122-series rows; 1123-sub parallel rows; 1125-a bus unit;

012-BMS board; 121-a voltage acquisition end; 122-a second output pole; 1221-a second bolt via; 013-BDU module; 131-a first input pole; 1311-jack; 1312-a first bolt via; 132-a housing; 1321-input slot; 1322-output slots; 134-a first high voltage protective cover; 135-a second high voltage protective cover; 136-a third output pole;

002-scaffold; 021-body;

213-a first sidewall; 2131—positioning ports; 214-a first via; 215-a first notch;

216-a first scaffold; 2161-subslot; 21612-pole connection holes; 2162-mating ribs; 2163-second through holes; 2164-first strip section; 2165-second strand segment; 2166-glue-pouring through holes;

217-second scaffold; 2171-first mounting groove; 2172-threading hole;

218-cell mounting area.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

While the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the description of embodiments of the present application, words such as "example" or "such as" are used to indicate exemplary, illustrative, or descriptive matter. Any embodiment or design described herein as "example" or "such as" is not necessarily to be construed as preferred or advantageous over another embodiment or design. The use of words such as "example" or "such as" is intended to present relative concepts in a clear manner.

Prior to describing the brackets and electrical connection assemblies of the present application, relevant background information of embodiments of the present application will be described first.

In the related art, the output of the high-voltage current of the battery module and the collection of the cell signal all need to pass through the CCS assembly (Cells Contact System, the collection and integration piece of the battery module). The CCS assembly includes a plurality of metal rows. The plurality of metal bars are respectively a bus bar for connecting the plurality of battery cells in series to form the battery module and a first output electrode for outputting high-voltage current of the battery module. The high-voltage current output mode of the battery module is as follows: a set of first output poles of the CCS component are electrically connected with a bridging row through bolts, the bridging row is electrically connected with the input end of the BDU module through bolts, and finally the BDU module outputs high-voltage current of the battery module. The pressure sampling mode of the battery module is as follows: the busbar and the other first output electrode of the CCS component are welded with the wire harness, and then the wire harness is connected to the voltage acquisition end of the BMS board through the connector. The high-voltage current output mode and the voltage signal acquisition mode have a plurality of problems, and are specifically as follows:

1. because the CCS assembly needs to be connected to the BDU module through a set of first output poles to transmit high voltage current; meanwhile, the CCS component is also required to be electrically connected with the BMS board through another set of first output electrode so as to collect voltage signals of the output electrode of the battery module; this results in the CCS having to configure two sets of first output poles, which increases the structural complexity and material cost of the electrical connection member of the battery module, thereby resulting in low assembly efficiency thereof;

2. because the first output pole, the bridging row and the BDU module of the CCS component are all connected through bolts, the electric installation procedure is increased, the bridging row is installed and needs to be positioned manually, the installation process cost on the battery module production process is increased, and the assembly efficiency is reduced;

3. because the wire harness welded on the first output electrode and the bus bar is required to be arranged between the CCS component and the BMS board, and voltage signals acquired by the wire harness are transmitted to the BMS board through the adapter; the configuration of the wire harness and the connector increases the material cost of the electrical connection of the battery module; and the wire harness and the connector are required to be configured with related process flows to be fixedly arranged, which results in an increase in electrical installation process steps and an increase in installation process costs, thereby reducing the assembly efficiency of the power battery module.

Based on this, the embodiment of the application provides a bracket and an electrical connection assembly, which are respectively described in detail below.

As shown in fig. 1 and 2, fig. 1 is a schematic structural view of a bracket 002 provided in an embodiment of the present application, and fig. 2 is a side view of the bracket 002 provided in an embodiment of the present application. Embodiments of the present application provide a stent 002. The support 002 includes a first support 216 and a second support 217. The first bracket 216 has opposite first and second sides. The first side is used for installing CCS components. The second support 217 extends from the second side in a direction away from the first support 216, and a side of the second support 217 facing away from the first support 216 is provided with a first mounting groove 2171 for mounting the BMS board. One slot end of the first mounting slot 2171 is provided with a first slot opening 215 through the first side wall 213 of the second bracket 217. The first sidewall 213 is for contact with the BDU module. Wherein, first side is provided with first through-hole 214, and first through-hole 214 communicates with the tank bottom of first mounting groove 2171, and first through-hole 214 is used for the CCS subassembly to be connected with the BMS board electricity, and first notch 215 is used for the BMS board to be connected with BDU module electricity.

It will be appreciated that the cradle 002 is an insulator that insulates the CCS assembly from the cell where electrical connection is not required. For example, the bracket 002 is a plastic member, and the material thereof may be engineering plastic, specifically may be a mixed material of PC resin and ABS resin. The output of CCS subassembly is connected with the input electricity of BMS board, and the output of BMS board is connected with the input electricity of BDU module. At least one of the outputs of the CCS assembly and the input of the BMS is located in the first through hole 214. At least one of the output end of the BMS board and the input end of the BDU module is located in the first slot 215.

The output end of the CCS component is a first output pole and a bus. The input of BMS board is voltage acquisition end, simultaneously, the output of BMS board is from the high-voltage current transmission of CCS subassembly to BDU module.

Illustratively, the input end of the BMS board is located at a side of the first through hole 214 remote from the first side, and the output end of the CCS assembly is disposed in the first through hole 214 and electrically connected to the input end of the BMS board. The input end of the BDU module is located at a side of the first slot 215 remote from the first mounting groove 2171, and the output end of the BMS board is electrically connected to the input end of the BDU after extending out of the first slot 215.

In this embodiment, the first bracket for installing the CCS assembly and the second bracket for installing the BMS board are integrated, and the BDU module is disposed adjacent to the BMS board, so that the CCS assembly may be directly electrically connected to the BMS board through the first through hole 214, to perform voltage signal transmission, and the BMS board may be electrically connected to the BDU module through the first slot 215, to perform high voltage current output. Therefore, on one hand, the CCS component adopts one set of first output electrode to realize the transmission of voltage signals and the output of high-voltage current, so that one set of first output electrode can be reduced, the structure of an electric connecting piece of the battery module can be simplified finally, and the installation efficiency is improved. On the other hand, components such as a bridging row, bolts, a wire harness, a connector and the like and related mounting processes can be omitted, so that the material cost of the electric connecting piece and the related mounting process cost can be further reduced.

Referring to the drawings, in one embodiment, the first side is provided with a second mounting groove for mounting the CCS assembly, and the first through hole 214 is disposed at the bottom of the second mounting groove.

It is understood that the first output pole and the bus bar of the CCS assembly may be embedded in the second mounting groove, or may be further bonded in the second mounting groove by glue.

In this embodiment, the CCS assembly is installed by setting the second installation groove, and the CCS assembly can be positioned based on the groove wall of the second installation groove, so that the position accuracy of the CCS assembly is improved, and the assembly efficiency is further improved.

Referring to fig. 1, in one embodiment, the second mounting groove includes a plurality of sub-grooves 2161. The bottom of each sub-groove 2161 is provided with a first through-hole 214.

It is understood that the first output poles and the bus bars of the CCS assembly are in one-to-one correspondence with the plurality of sub-slots 2161 and are mounted in the corresponding sub-slots 2161.

In the present embodiment, the second mounting groove is configured as a plurality of sub-grooves 2161, so that the first output pole and the bus bar of the CCS assembly can be located in one sub-groove 2161, and the first output pole and the bus bar can be mounted and positioned based on the plurality of sub-grooves 2161, so that the position accuracy of the CCS assembly can be further improved.

Referring to fig. 3, fig. 3 is a top view of a bracket 002 according to an embodiment of the present application. In one embodiment, the CCS assembly is configured to be connected to the battery cell, and the plurality of sub-slots 2161 are sequentially arranged along the first direction, and two ends of the sub-slots 2161 are symmetrical to each other along the second direction. The first direction and the second direction are perpendicular to the axial direction of the battery cell, and the first direction and the second direction are perpendicular to each other.

Illustratively, the second brackets 217 are disposed opposite the center of symmetry of the sub-slot 2161. The first bracket 216 is a rectangular plate having long sides and short sides. The first direction is parallel to the long side and the second direction is parallel to the short side. And the first leg 216 has a central symmetry line parallel to the long side.

In this embodiment, by arranging the sub-slots 2161 in a symmetrical structure, the load of the stand 002 can be balanced, so that the gravity distribution from the CCS assembly borne by the stand 002 is more uniform, the single-side overload or unbalanced stress condition of the two sides of the stand 002 can be reduced, and the stability and bearing capacity of the stand 002 can be improved.

Referring to fig. 4, fig. 4 is an enlarged view of fig. 1 at a. In an embodiment, the bottom of the sub-slot 2161 is provided with a mating rib 2162, and the mating rib 2162 is provided with a second through hole 2163.

It will be appreciated that the buss bar is located in the first sub-slot 2161 and is provided with a slot that mates with the mating rib 2162. By the engagement of the notch with the engagement rib 2162, the engagement surface between the bus bar and the first sub-groove 2161 can be increased, so that the positional stability of the bus bar can be improved.

In addition, when the bus is expanded due to heat generated during battery operation, the bus can press the matched ribs 2162 to deform the second through holes 2163, so that a buffer space is provided for the expansion deformation of the bus, the stress state of the bus is improved, and finally the working stability of the bus can be improved.

Referring to fig. 4, in an embodiment, the mating rib 2162 includes a first segment 2164 and a second segment 2165, one end of the first segment 2164 is connected to the slot wall of the sub-slot 2161, the other end is connected to one end of the second segment 2165, and an included angle is formed between the first segment 2164 and the second segment 2165, at least part of the slot wall of the sub-slot 2161, the first segment 2164 and the second segment 2165 enclose a hole wall of the second through hole 2163.

Illustratively, the included angle between the first and second segments 2164, 2165 ranges from 100 ° to 170 °, including, but not limited to, 100 °, 120 °, 133 °, 145 °, 160 °, 170 °.

In this embodiment, through the above arrangement, the matching ribs 2162 and the bus bar have the matching surfaces in multiple directions, so on one hand, the matching ribs 2162 can position the bus bar in multiple directions, thereby improving the position accuracy of the bus bar; on the other hand, the matching ribs can provide buffer space for the expanded bus in multiple directions, so that the stress state of the bus is further improved.

Referring to fig. 2, in one embodiment, the second side is provided with a die mounting region 218. The cell mounting areas 218 are two and are located on both sides of the second support 217, respectively. A post attachment aperture 21612 is also provided from the first side to the interior of the first bracket 216. The post attachment holes 21612 communicate with the cell mounting area.

It is understood that the cell mounting region 218 is used to mount the cells. One end of the CCS assembly located in the second mounting groove is connected to the terminal of the battery through the terminal connection hole 21612. Typically, the post connecting hole 21612 opposite to the positive electrode of the battery is a circular hole, and the post connecting hole 21612 opposite to the negative electrode of the battery is a fan-shaped hole, as shown in fig. 3.

Illustratively, two cell mounting regions 218 are located on either side of the width of the first mounting slot 2171. Therefore, the BMS board and the BDU module can be located between the two battery cell mounting areas 218, and the bracket 002 can be in a bilateral symmetry structure so as to facilitate arrangement and mounting of related components.

In the present embodiment, by disposing the cell mounting region 218 and the second bracket 217 on the same side of the first bracket 216, the compactness of the battery module employing the bracket 002 can be improved.

In one embodiment, first bracket 216 and second bracket 217 are integrally formed.

Illustratively, the first bracket 216 and the second bracket 217 are integrally injection molded.

In the present embodiment, by integrally molding the first bracket 216 and the second bracket 217, the overall strength of the bracket can be enhanced, thereby making the support of the CCS assembly more stable.

Referring to fig. 5 and 6, fig. 5 is a schematic structural view of a bracket 002 in a bottom view according to an embodiment of the present application, and fig. 6 is a schematic structural view of an end of a first sidewall 213 facing away from a first bracket 216 according to an embodiment of the present application. In one embodiment, an end of the first sidewall 213 facing away from the first bracket 216 is provided with a positioning opening 2131, the positioning opening 2131 being in communication with the first slot 215.

It is understood that the positioning hole 2131 is engaged with the BMS plate. Specifically, a boss is provided on the housing of the BMS board, and is engaged with the positioning hole 2131 when the BMS board is mounted in the first mounting groove 2171.

In addition, positioning ports are provided at both slot ends of the first mounting slot 2171 and at one side close to the notch of the first mounting slot 2171. Correspondingly, bosses are arranged at two ends of the housing of the BMS plate.

In this embodiment, through setting up the locating hole 2131, increased the mating surface of second support and BMS board to can promote the position accuracy of BMS board for the support, and then do benefit to and be connected BMS board and BDU and CCS subassembly electricity.

Referring to fig. 4, in an embodiment, a plurality of glue filling through holes are disposed on the first bracket.

It will be appreciated that after the components such as the electrical core and the bracket are installed in the battery box, in order to ensure the electrical connection stability of each electrical component and control the vibration during transportation, the electrical core and the bracket CCS assembly are required to be glued together by glue.

In addition, the glue filling hole can realize the light weight of the bracket besides the glue filling effect, thereby being beneficial to controlling the weight of the battery.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an electrical connection assembly 001 according to an embodiment of the present application. Accordingly, embodiments of the present application also provide an electrical connection assembly 001, the electrical connection assembly 001 comprising CCS assembly 011, BMS board 012, BDU module 013 and the aforementioned rack 002.CCS component 011 is installed on the first side. The BMS board 012 is mounted to the first mounting groove 2171; the BDU module 013 abuts the first sidewall 213. An electrical connection structure between CCS assembly 011 and BMS board 012 is located in first via 214. An electrical connection structure between the BMS board 012 and the BDU module 013 is located in the first slot 215.

The CCS assembly 011 has a first output pole 111 and a plurality of bus groups 112. The BMS board 012 has a second output electrode 122 and a plurality of voltage collecting terminals 121, and fig. 8 is a schematic structural diagram of the BMS board 012 according to an embodiment of the present application as shown in fig. 8. In general, the voltage collecting terminals 121 of the BMS board 012 at both ends are used to collect the output pole voltages of the battery module. The first output electrode 111 and the plurality of bus groups 112 are in one-to-one correspondence with the plurality of voltage collection terminals 121. The first output electrode 111 and the plurality of bus groups 112 are electrically connected to the voltage acquisition terminal 121 corresponding thereto, and the voltage acquisition terminal 121 electrically connected to the first output electrode 111 is also electrically connected to the second output electrode 122. The BDU module 013 includes a first input pole 131, and the first input pole 131 is electrically connected to the second output pole 122, as shown in fig. 9, and fig. 9 is a schematic diagram of an electrical connection structure between electrical components provided in an embodiment of the present application.

It will be appreciated that the input poles in the foregoing description include positive input poles and negative input poles, the output poles include positive output poles and negative output poles, the positive input poles are electrically connected with the corresponding positive output poles, and the negative input poles are electrically connected with the corresponding negative output poles. The first output electrode 111 and the bus bar 112 may be electrically connected to the voltage collecting terminal 121 by welding, or may be connected by abutting or plugging. Accordingly, the electrical connection between the first input pole 131 and the second output pole 122 may be achieved by welding, or may be achieved by abutting or plugging.

The material of the CCS device is in AL 1060-O state, and correspondingly, the first output electrode 111 and the bus bar 112 are aluminum bars. The second output electrode 122 and the first input electrode 131 are copper bars.

In addition, the plurality of bus bar groups 112 are sequentially arranged along the first direction, and the first output poles 111 are two, namely, a positive first output pole and a negative first output pole, and the two first output poles are respectively positioned at two ends of the arrangement direction of the plurality of bus bar groups 112. The bus bar group includes a main parallel bar 1121 and two bus bar units 1125 symmetrically arranged in a first direction. The bus unit 1125 includes a plurality of series lines 1122 and a sub parallel line 1123 connecting the plurality of series lines 1122 in parallel. One end of the main parallel row 1121 is connected to the sub parallel row 1123 of one busbar unit, and the other end is connected to the sub parallel row 1123 of another busbar unit, as shown in fig. 10, fig. 10 is a schematic structural diagram of the busbar set 112 according to the embodiment of the present application. Wherein, the main parallel row 1121 is connected with the voltage collecting terminal of the BMS board.

In this embodiment, by sequentially electrically connecting the CCS module 011, the BMS board 012, and the BDU module 013, the BMS board 012 can collect information such as the battery cell of the battery cell, and can output high-voltage current from the CCS module 011 to the BDU module 013 via the BMS board 012. Therefore, on one hand, the CCS group can realize the transmission of voltage signals and the output of high-voltage current by adopting the first output electrode 111, so that the first output electrode 111 can be reduced, the material cost and the related installation process cost of the electric connection piece of the battery module can be improved, and the installation efficiency can be improved. On the other hand, components such as a jumper row, bolts, a wire harness, a connector and the like and related mounting processes can be omitted, so that the material cost of the electric connecting piece and the related mounting process cost are further reduced, and the mounting efficiency is improved.

In addition, in the present embodiment, based on the bracket 002, on one hand, the CCS assembly 011, the BMS board 012 and the BDU module 013 can be more tightly connected together, so as to promote the compact structure of the electrical connection assembly 001; on the other hand, the components can be supported and positioned based on the bracket 002, so that the stress state of the electric connection part between the components is improved, and the electric connection state between the components is further stable.

Referring to fig. 11, fig. 11 is a schematic structural diagram of a BDU module 013 according to the embodiments of the present application. In one embodiment, the first input electrode 131 is plugged with the second output electrode 122. Specifically, a jack 1311 is disposed at an end of the first input pole 131 near the second output pole 122, and the second output pole 122 is inserted into the jack 1311.

In this embodiment, by plugging the first input pole 131 with the second output pole 122, on the one hand, the BDU module 013 can be positioned relative to the BMS board 012 based on the plugging structure, so as to improve the position accuracy of the BDU module 013. On the other hand, the electrical connection structure between the first input electrode 131 and the second output electrode 122 is simple, easy to operate, and convenient for subsequent maintenance.

The first input electrode 131 is provided with a first bolt via 1312. A second bolt via 1221 is provided in the second output electrode 122. A nut is provided in the BDU module 013. The screw rod end of the bolt sequentially passes through one end of the first bolt via hole 1312, the second bolt via hole 1221 and the other end of the first bolt via hole 1312 and then is in threaded connection with the nut, so that the first input pole 131 and the second output pole 122 are fixed with each other, the high-voltage circuit connection is completed, and the electrical connection stability between the BDU module 013 and the BMS board 012 is improved.

Referring to fig. 12, fig. 12 is an exploded view of a BDU module 013 provided in an embodiment of the present application. In one embodiment, the BDU module 013 also includes a housing 132, a first high voltage protective cover 134, a second high voltage protective cover 135, and a third output pole 136. The housing 132 defines an input slot 1321 and an output slot 1322. The input slot 1321 is located at a side of the housing 132 facing away from the BMS plate 012. The output slot 1322 is located on a side of the housing 132 adjacent to the first bracket 216. The first input electrode 131 is disposed in the input slot 1321, and the first high voltage protection cover 134 covers the input slot 1321 to insulate the first input electrode 131 from the outside. The positive and negative electrodes of the first input electrode 131 are disposed at intervals along the axial direction of the first through hole 214. The third output electrode 136 is disposed in the output slot 1322, and the second high voltage protection cover 135 covers the output slot 1322 to insulate the third output electrode 136 from the outside. The positive electrode of the third output electrode 136 is electrically connected to the positive electrode of the first input electrode 131, and the negative electrode of the third output electrode 136 is electrically connected to the negative electrode of the first input electrode 131.

Referring to fig. 13, fig. 13 is a schematic structural diagram of a bracket 002 according to another view angle according to an embodiment of the present application. The second bracket 217 has a second side wall disposed opposite to the first side wall 213, and the second side wall is provided with a threading hole 2172. One side of the BMS board 012 facing away from the first slot 215 is abutted against a slot end of the first mounting slot 2171 facing away from the first slot 215, and a data interface of the BMS board 012 is disposed opposite to the threading hole 2172.

In this embodiment, the threading holes 2172 are provided, so that the data wires can be connected with the data interface of the BMS board 012 through the threading holes 2172, thereby facilitating signal connection of the BMS board 012 with other control systems. In addition, the BMS board 012 and the groove end butt of deviating from first notch 215 of first mounting groove 2171 can be when BDU module 013 and BMS board 012 peg graft, based on the abutment of this groove end, restrict the removal of BMS board 012 to need not manual spacing to BMS board 012, improve convenience and the assembly efficiency of assembly.

The foregoing has outlined rather broadly the more detailed description of embodiments of the present application, wherein specific examples are provided herein to illustrate the principles and embodiments of the present application, the above examples being provided solely to assist in the understanding of the methods of the present application and the core ideas thereof; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims

1. A stent, comprising:

a first bracket having first and second opposite sides, the first side for mounting a CCS assembly;

the second bracket extends from the second side along the direction away from the first bracket, a first mounting groove for mounting the BMS plate is formed in one side of the second bracket away from the first bracket, a first notch penetrating through a first side wall of the second bracket is formed in one groove end of the first mounting groove, and the first side wall is used for being in contact with the BDU module;

wherein, first side is provided with first through-hole, first through-hole with the tank bottom intercommunication of first mounting groove, just first through-hole is used for the CCS subassembly with the BMS board electricity is connected, first notch is used for the BMS board with BDU module electricity is connected.

2. The bracket of claim 1, wherein the first side is provided with a second mounting groove for mounting CCS assemblies, and the first through hole is provided at a bottom of the second mounting groove.

3. The bracket according to claim 2, wherein the second mounting groove includes a plurality of sub grooves, and the bottom of each sub groove is provided with the first through hole.

4. A rack as claimed in claim 3, wherein a plurality of said sub-slots are arranged in sequence along a first direction and in a second direction, both ends of said sub-slots being symmetrical to each other, said first direction being perpendicular to said second direction.

5. A bracket according to claim 3, wherein the bottom of the sub-groove is provided with a mating rib, and the mating rib is provided with a second through hole.

6. The bracket of claim 5, wherein the mating rib comprises a first segment and a second segment, one end of the first segment is connected with the slot wall of the sub-slot, the other end of the first segment is connected with one end of the second segment, an included angle is formed between the first segment and the second segment, and at least part of the slot wall of the sub-slot, the first segment and the second segment enclose a hole wall of the second through hole.

7. The stent of claim 6, wherein the angle between the first and second segments is in the range of 100 ° to 170 °.

8. The bracket of claim 1, wherein the second side is provided with two cell mounting areas, and the two cell mounting areas are respectively positioned at two sides of the second bracket; and a pole connection hole is further formed in the first bracket from the first side, and the pole connection hole is communicated with the battery cell mounting area.

9. The stent of any one of claims 1-8, wherein the first stent and the second stent are integrally formed.

10. The bracket of any of claims 1-8, wherein an end of the first sidewall facing away from the first bracket is provided with a locating port, the locating port in communication with the first slot.

11. The bracket of any of claims 1-8, wherein the first bracket is provided with a plurality of glue-pouring through holes.

12. An electrical connection assembly, comprising:

comprising a stent according to any one of claims 1-11;

a CCS assembly mounted to the first side;

a BMS board mounted to the first mounting groove;

a BDU module abutted against the first side wall;

wherein, the electrical connection structure between the CCS assembly and the BMS plate is located in the first through hole, and the electrical connection structure between the BMS plate and the BDU module is located in the first slot.

13. The electrical connection assembly of claim 12, wherein the CCS assembly includes a first output pole and a plurality of buss groups; the BMS board comprises a second output electrode and a plurality of voltage acquisition ends, the first output electrode and the plurality of bus bar groups are in one-to-one correspondence with the plurality of voltage acquisition ends, the first output electrode and the plurality of bus bar groups are respectively and electrically connected with the voltage acquisition ends corresponding to the first output electrode, and the voltage acquisition end electrically connected with the first output electrode is also electrically connected with the second output electrode; the BDU module includes a first input pole electrically connected to the second output pole.

14. The electrical connection assembly of claim 13, wherein the first input pole is plugged with the second output pole.

15. The electrical connection assembly of claim 14, wherein an end of the first input pole adjacent to the second output pole is provided with a receptacle into which the second output pole is inserted.

16. The electrical connection assembly of any one of claims 11-15, wherein the second bracket has a second side wall disposed opposite the first side wall, the second side wall is provided with a threading aperture, and the data interface of the BMS board is disposed opposite the threading aperture.