Holder, electrical connection assembly, and battery module

Abstract

A holder, an electrical connection assembly and a battery module, which relate to the technical field of batteries. The holder comprises a first holder and a second holder, wherein a first side of the first holder is configured for installation of a CCS assembly, and a second side thereof is connected to the second holder; the second holder is provided with a first installation slot configured for installation of a BMS board, a first slot opening configured for electric connection of the BMS board and a BDU module is provided at one slot end of the first installation slot, and a first side wall is in contact with the BDU module; and the first holder has a first through hole configured for electric connection of the CCS assembly and the BMS board.

Description

Brackets, electrical connection components and battery modules

[0001] This application claims priority to Chinese patent applications filed with the China Patent Office on November 28, 2023, with application numbers 202311610836.9, 202323231140.3, 202311610875.9 and 202323231159.8, the entire contents of the above applications are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a bracket, an electrical connection assembly, and a battery module. Background Art

[0003] In related technologies, a battery module outputs its high-voltage current to the input of a BDU (Battery Energy Distribution Unit) through a portion of electrical connection components. Simultaneously, the battery module transmits its voltage information to the voltage acquisition terminal of a BMS (Battery Management System) board through another portion of electrical connection components. SUMMARY OF THE INVENTION

[0004] The above-mentioned electrical connection assembly involves many components, which results in a complex structure of the electrical connection assembly and low assembly efficiency.

[0005] In the first aspect, an embodiment of the present application provides a bracket, which includes a first bracket and a second bracket; the first bracket has a first side and a second side opposite to each other, and the first side is configured to install a CCS component; the second bracket extends from the second side in a direction away from the first bracket, and the side of the second bracket away from the first bracket is provided with a first mounting groove configured to install a BMS board, and one end of the first mounting groove is provided with a first groove penetrating through a first side wall of the second bracket, and the first side wall is configured to contact the BDU module; wherein, a first through hole is provided on the first side, the first through hole is connected to the bottom of the first mounting groove, and the first through hole is for electrically connecting the CCS component and the BMS board, and the first groove is for electrically connecting the BMS board and the BDU module.

[0006] In a second aspect, embodiments of the present application further provide an electrical connection assembly, comprising a CCS assembly, a BMS board, a BDU module, and the aforementioned bracket. The CCS assembly is mounted on the first side; the BMS board is mounted in the first mounting slot; and the BDU module abuts against the first sidewall. The electrical connection structure between the CCS assembly and the BMS board is located in the first through-hole, and the electrical connection structure between the BMS board and the BDU module is located in the first notch.

[0007] On the third aspect, an embodiment of the present application also provides a battery module, which includes a cell holder, a cell and the aforementioned electrical connection assembly; the cell holder includes a base and a top cover, the base is provided with an installation slot, the installation slot includes a cell installation slot, a BMS installation slot and a BDU installation slot; the top cover covers the installation slot; the cell is arranged in the cell installation slot; the first holder is located between the base and the top cover, the CCS assembly is located on the side of the first holder close to the top cover, the second holder is inserted into the BMS installation slot, and the BDU module is located in the BDU installation slot. Beneficial effects

[0008] The beneficial effects of this application are:

[0009] The present application integrates the first bracket for installing the CCS component and the second bracket for installing the BMS board into one, and sets the BDU module near the BMS board, so that the CCS component can be directly electrically connected to the BMS board through the first through hole to transmit the voltage signal, and the BMS board can be electrically connected to the BDU module through the first notch to output high-voltage current. Therefore, on the one hand, the CCS component adopts a set of first output poles to realize both the transmission of voltage signals and the output of high-voltage current, thereby reducing a set of first output poles, and ultimately improving the material cost and related installation process cost of the electrical connectors of the battery module, thereby improving installation efficiency. On the other hand, it can eliminate components such as jumper bars, bolts, wiring harnesses, connectors, and related installation processes, thereby further simplifying the structure of the electrical connectors and improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG1 is a schematic structural diagram of a bracket provided in an embodiment of the present application;

[0011] FIG2 is a side view of a bracket provided in an embodiment of the present application;

[0012] FIG3 is a top view of a bracket provided in an embodiment of the present application;

[0013] Figure 4 is an enlarged view of point A in Figure 1;

[0014] FIG5 is a schematic structural diagram of a bracket from an upward viewing angle provided by an embodiment of the present application;

[0015] FIG6 is a schematic structural diagram of an end of a first side wall facing away from a first bracket provided by an embodiment of the present application;

[0016] FIG7 is a schematic structural diagram of an electrical connection assembly provided in an embodiment of the present application;

[0017] FIG8 is a schematic structural diagram of a BMS board provided in an embodiment of the present application;

[0018] FIG9 is a schematic diagram of the electrical connection structure between electrical components provided in an embodiment of the present application;

[0019] FIG10 is a schematic structural diagram of a busbar group provided in an embodiment of the present application;

[0020] FIG11 is a schematic structural diagram of a BDU module provided in an embodiment of the present application;

[0021] FIG12 is an exploded view of a BDU module provided in an embodiment of the present application;

[0022] FIG13 is a schematic structural diagram of a bracket from another perspective provided by an embodiment of the present application;

[0023] FIG14 is an exploded view of a battery module provided in an embodiment of the present application;

[0024] FIG15 is an exploded view of a cell support provided in an embodiment of the present application;

[0025] FIG16 is a schematic structural diagram of a base provided in an embodiment of the present application;

[0026] FIG17 is a schematic structural diagram of a base from another perspective provided by an embodiment of the present application;

[0027] FIG18 is a top view of a base provided in an embodiment of the present application;

[0028] FIG19 is a cross-sectional view taken along line AA in FIG18;

[0029] FIG20 is a schematic diagram of the top cover and the base provided in an embodiment of the present application;

[0030] Figure 21 is a top view of Figure 20;

[0031] FIG22 is a cross-sectional view taken along line BB in FIG21 ;

[0032] FIG23 is an exploded schematic diagram of some components of a battery module provided in an embodiment of the present application;

[0033] FIG24 is an enlarged view of point C in FIG22;

[0034] FIG25 is a cross-sectional view of a second column provided in an embodiment of the present application;

[0035] FIG26 is a schematic diagram of the top cover and the base provided in another embodiment of the present application;

[0036] FIG27 is a schematic diagram of electrical connections of some electrical components of a battery module provided in an embodiment of the present application;

[0037] FIG28 is a schematic diagram of the hydraulic principle of the thermal management system of the battery module provided in an embodiment of the present application;

[0038] FIG29 is a schematic diagram of the structure of the base and the bracket provided in an embodiment of the present application;

[0039] FIG30 is an enlarged view of point D in FIG29;

[0040] FIG31 is an enlarged view of point E in FIG23.

[0041] Description of the drawings:

[0042] 001-Electrical connection components;

[0043] 011-CCS assembly; 111-first output pole; 112-busbar; 1121-main parallel bar; 1122-series bar; 1123-sub-parallel bar; 1125-busbar unit;

[0044] 012 - BMS board; 121 - voltage collection terminal; 122 - second output pole; 1221 - second bolt hole; 013a - BDU module; 131a - first input pole; 1311 - socket; 1312 - first bolt hole; 132a - housing; 1321 - input slot; 1322 - output slot; 134 - first high-voltage protection cover; 135a - second high-voltage protection cover; 136 - third output pole; 137 - insulating partition;

[0045] 002-Standard;

[0046] 213 - first side wall; 2131 - positioning opening; 214 - first through hole; 215 - first notch;

[0047] 216 - first bracket; 2161 - sub-slot; 21612 - pole connection hole; 2162 - matching rib; 2163 - second through hole; 2164 - first strip segment; 2165 - second strip segment; 2166 - glue filling through hole; 2167 - first through hole;

[0048] 217-second bracket; 2171-first mounting slot; 2172-threading hole; 2173-cage;

[0049] 218-battery cell installation area;

[0050] 003-base; 031-bottom plate; 311-first cavity; 312-internal threaded column; 032-thermal management column; 321-second cavity; 322-first column; 3223-first sealing ring; 3224-insert ring; 3225-connecting ring; 323-second column; 034-step groove; 035-cell mounting groove; 351-connecting groove; 036-BMS mounting groove; 037-BDU mounting groove; 1225-second sealing ring;

[0051] 013 - top cover; 131 - third cavity; 132 - third bolt hole; 133 - annular groove; 134a - first insertion shaft; 1341 - first connecting hole; 135 - matching hole;

[0052] 014-liquid discharge port; 015-liquid inlet; 016-air inlet; 017-exhaust port; 018-battery cell;

[0053] 042-temperature management module; 043-output pipeline; 044-input pipeline; 045-discharge solenoid valve; 046-inlet solenoid valve; 047-intake solenoid valve; 048-exhaust solenoid valve; 091-first hydraulic pump; 092-second hydraulic pump; 93-detection module; 94-controller;

[0054] 055-insulating sheet; 551-second perforation; 552-matching ring. Modes for Carrying Out the Invention

[0055] Before introducing the bracket and electrical connection assembly of the present application, the relevant background information of the embodiments of the present application is first introduced.

[0056] In the related art, the output of the high-voltage current of the battery module and the collection of the battery cell signal both need to go through the CCS component (Cells Contact System, battery module collection integrated component). The CCS component includes multiple metal bars. The multiple metal bars are respectively used to connect multiple battery cells in series to form a bus bar of the battery module and a first output pole for outputting the high-voltage current of the battery module. The high-voltage current output method of the battery module is: first, a set of first output poles of the CCS component are electrically connected to the jumper bar by bolts, and the jumper bar is then electrically connected to the input end of the BDU module by bolts, and finally the BDU module outputs the high-voltage current of the battery module. The voltage collection method of the battery module is: first, the bus bar and another set of first output poles of the CCS component are welded to the wiring harness, and then the wiring harness is transferred to the voltage collection end of the BMS board through the connector. There are many problems with this high-voltage current output method and voltage signal collection method, as follows:

[0057] 1. The CCS assembly needs to be connected to the BDU module through a set of first output poles to transmit high-voltage current. At the same time, the CCS assembly also requires another set of first output poles to be electrically connected to the BMS board to collect the voltage signal from the battery module output pole. This results in the CCS being equipped with two sets of first output poles, increasing the structural complexity and material cost of the battery module's electrical connectors, resulting in low assembly efficiency.

[0058] 2. Since the first output pole of the CCS assembly, the jumper bar, and the BDU module are all connected by bolts, the electrical installation process is increased, and the installation of the jumper bar requires manual positioning, which increases the installation process cost of the battery module process and reduces assembly efficiency;

[0059] 3. Since it is necessary to set a wiring harness welded to the first output pole and the busbar between the CCS component and the BMS board, and transmit the voltage signal collected by the wiring harness to the BMS board through an adapter; the configuration of the wiring harness and connector increases the material cost of the electrical connection of the battery module; and both the wiring harness and the connector need to be configured with relevant process flows to fix their arrangement, which leads to an increase in electrical installation steps and an increase in installation process costs, thereby reducing the assembly efficiency of the power battery module.

[0060] Based on this, an embodiment of the present application provides a bracket, an electrical connection assembly and a battery module, which are described in detail below in conjunction with Figures 1 to 31.

[0061] As shown in Figures 1 and 2, Figure 1 is a structural schematic diagram of the bracket 002 provided in an embodiment of the present application, and Figure 2 is a side view of the bracket 002 provided in an embodiment of the present application. An embodiment of the present application provides a bracket 002. The bracket 002 includes a first bracket 216 and a second bracket 217. The first bracket 216 has a first side and a second side opposite to each other. The first side is configured to install a CCS component. The second bracket 217 extends from the second side in a direction away from the first bracket 216, and the side of the second bracket 217 away from the first bracket 216 is provided with a first mounting groove 2171 configured to install a BMS board. One end of the first mounting groove 2171 is provided with a first notch 215 that passes through the first side wall 213 of the second bracket 217. The first side wall 213 is configured to contact the BDU module. Among them, a first through hole 214 is provided on the first side, which is connected to the bottom of the first mounting groove 2171. The first through hole 214 is used to electrically connect the CCS assembly with the BMS board, and the first notch 215 is used to electrically connect the BMS board with the BDU module.

[0062] It will be understood that bracket 002 is an insulating component that insulates the CCS assembly from areas of the battery cell that do not require electrical connection. For example, bracket 002 is a plastic component, made of engineering plastic, specifically a blend of PC resin and ABS resin. The output of the CCS assembly is electrically connected to the input of the BMS board, which in turn is electrically connected to the input of the BDU module. At least one of the CCS assembly output and the BMS input is located in first through-hole 214. At least one of the BMS board output and the BDU module input is located in first notch 215.

[0063] The output of the CCS module is the first output pole and busbar. The input of the BMS board is the voltage acquisition terminal. At the same time, the output of the BMS board transmits the high-voltage current from the CCS module to the BDU module.

[0064] Illustratively, the input of the BMS board is located on the side of the first through-hole 214 away from the first side, and the output of the CCS assembly is disposed in the first through-hole 214 and electrically connected to the input of the BMS board. The input of the BDU module is located on the side of the first notch 215 away from the first mounting groove 2171, and the output of the BMS board extends out of the first notch 215 and is electrically connected to the input of the BDU.

[0065] In this embodiment, the first bracket for mounting the CCS assembly and the second bracket for mounting the BMS board are integrated into one piece, and the BDU module is positioned adjacent to the BMS board. This allows the CCS assembly to be directly electrically connected to the BMS board via the first through-hole 214 for voltage signal transmission, and the BMS board to be electrically connected to the BDU module via the first notch 215 for high-voltage current output. This allows the CCS assembly to utilize a single set of first output poles to achieve both voltage signal transmission and high-voltage current output, thereby reducing the number of first output poles required. This ultimately simplifies the structure of the battery module's electrical connectors and improves installation efficiency. Furthermore, components such as jumper bars, bolts, wiring harnesses, connectors, and related installation processes can be eliminated, further reducing the material cost of the electrical connectors and the associated installation process costs.

[0066] Please refer to the figure. In one embodiment, a second mounting groove configured to mount a CCS component is provided on the first side. The first through hole 214 is provided at the bottom of the second mounting groove.

[0067] It can be understood that the first output pole and the busbar of the CCS assembly can be embedded in the second installation groove, and can also be further bonded in the second installation groove by glue.

[0068] In this embodiment, by providing a second installation groove to install the CCS component, the CCS component can be positioned based on the groove wall of the second installation groove, thereby improving the position accuracy of the CCS component and further improving the assembly efficiency.

[0069] 1 , in one embodiment, the second mounting groove includes a plurality of sub-grooves 2161 . A first through hole 214 is disposed at the bottom of each sub-groove 2161 .

[0070] It can be understood that the first output pole and the busbar of the CCS assembly correspond one-to-one to the multiple sub-slots 2161 and are installed in the corresponding sub-slots 2161.

[0071] In this embodiment, by setting the second installation groove as a structure of multiple sub-grooves 2161, the first output pole and bus of the CCS component can be respectively located in a sub-groove 2161, so that the first output pole and bus are respectively installed and positioned based on the multiple sub-grooves 2161, and the positioning accuracy of the CCS component can be further improved.

[0072] Please refer to Figure 3, which is a top view of a bracket 002 provided in an embodiment of the present application. In one embodiment, the CCS assembly is configured to connect to a battery cell. Multiple sub-slots 2161 are arranged sequentially along a first direction, and along a second direction, the two ends of the sub-slots 2161 are symmetrical with each other. The first direction and the second direction are both perpendicular to the axial direction of the battery cell, and the first direction and the second direction are perpendicular to each other.

[0073] Exemplarily, the second bracket 217 is disposed relative to the center of symmetry of the sub-slot 2161. The first bracket 216 is a rectangular plate having a long side and a short side. The first direction is parallel to the long side, and the second direction is parallel to the short side. The first bracket 216 has a central symmetry line parallel to the long side.

[0074] In this embodiment, by setting the sub-grooves 2161 into a symmetrical structure, the load of the bracket 002 can be balanced, so that the gravity from the CCS component borne by the bracket 002 is more evenly distributed, thereby reducing the overload on one side of the bracket 002 or the unbalanced force on both sides, thereby improving the stability and load-bearing capacity of the bracket 002.

[0075] Please refer to Figure 4, which is an enlarged view of point A in Figure 1. In one embodiment, a matching rib 2162 is provided at the bottom of the sub-groove 2161, and a second through hole 2163 is provided on the matching rib 2162.

[0076] It can be understood that the busbar is located in the first sub-slot 2161, and a notch is provided on the busbar to cooperate with the mating rib 2162. The notch cooperates with the mating rib 2162 to increase the mating surface between the busbar and the first sub-slot 2161, thereby improving the positional stability of the busbar.

[0077] In addition, when the battery generates heat and the bus expands, the bus can squeeze the matching rib 2162 to deform the second through hole 2163, thereby providing a buffer space for the expansion and deformation of the bus, thereby improving the stress state of the bus and ultimately improving the working stability of the bus.

[0078] Please refer to Figure 4. In one 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 groove wall of the sub-groove 2161, and the other end is connected to one end of the second segment 2165. There is an angle between the first segment 2164 and the second segment 2165. At least part of the groove wall of the sub-groove 2161, the first segment 2164 and the second segment 2165 are enclosed to form the hole wall of the second through hole 2163.

[0079] Illustratively, the angle between the first segment 2164 and the second segment 2165 ranges from 100° to 170°, including but not limited to 100°, 120°, 133°, 145°, 160°, and 170°.

[0080] In this embodiment, through the above-mentioned arrangement, the mating rib 2162 and the bus have mating surfaces in multiple directions. In this way, on the one hand, the mating rib 2162 can position the bus in multiple directions, thereby improving the positioning accuracy of the bus; on the other hand, the mating rib can provide buffer space for the expanded bus in multiple directions, thereby further improving the stress state of the bus.

[0081] Referring to Figure 2 , in one embodiment, a cell mounting area 218 is provided on the second side. Two cell mounting areas 218 are provided, one on each side of the second bracket 217. Furthermore, a terminal connection hole 21612 is provided from the first side toward the interior of the first bracket 216. The terminal connection hole 21612 communicates with the cell mounting area.

[0082] As will be appreciated, the cell mounting area 218 is configured to mount the cell. One end of the CCS assembly located in the second mounting slot is connected to the cell's pole via the pole connection hole 21612. Typically, the pole connection hole 21612 facing the cell's positive terminal is a circular hole, while the pole connection hole 21612 facing the cell's negative terminal is a fan-shaped hole, as shown in Figure 3.

[0083] For example, the two cell installation areas 218 are located on both sides of the width direction of the first installation slot 2171. Thus, the BMS board and BDU module can be located between the two cell installation areas 218, and the bracket 002 can be made into a bilaterally symmetrical structure to facilitate the arrangement and installation of related components.

[0084] In this embodiment, by arranging the battery cell installation area 218 and the second bracket 217 on the same side of the first bracket 216 , the structural compactness of the battery module using the bracket 002 can be improved.

[0085] In one embodiment, the first bracket 216 and the second bracket 217 are integrally formed.

[0086] Exemplarily, the first bracket 216 and the second bracket 217 are integrally injection molded.

[0087] In this embodiment, by integrally forming the first bracket 216 and the second bracket 217 , the overall strength of the bracket can be improved, thereby making the support for the CCS assembly more stable.

[0088] Please refer to Figures 5 and 6. Figure 5 is a schematic diagram of the structure of the bracket 002 provided in an embodiment of the present application from a bottom perspective, and Figure 6 is a schematic diagram of the structure of the end of the first side wall 213 facing away from the first bracket 216 provided in an embodiment of the present application. In one embodiment, a positioning opening 2131 is provided at the end of the first side wall 213 facing away from the first bracket 216, and the positioning opening 2131 is connected to the first notch 215.

[0089] It can be understood that the positioning hole 2131 cooperates with the BMS board. Specifically, a boss is provided on the housing of the BMS board, and when the BMS board is installed in the first installation groove 2171, the boss is engaged with the positioning hole 2131.

[0090] In addition, positioning holes are provided at both ends of the first mounting slot 2171 and on one side close to the slot opening of the first mounting slot 2171. Correspondingly, bosses are provided at both ends of the housing of the BMS board.

[0091] In this embodiment, by providing the positioning hole 2131, the matching surface between the second bracket and the BMS board is increased, thereby improving the positioning accuracy of the BMS board relative to the bracket, thereby facilitating the electrical connection of the BMS board with the BDU and CCS components.

[0092] Please refer to FIG. 4 . In one embodiment, a plurality of glue-filling through holes are provided on the first bracket.

[0093] It can be understood that after the battery cells, brackets and other components are installed in the battery box, in order to ensure the electrical connection stability of each electrical component and control the vibration during transportation, they need to be glued together to glue the battery cells, brackets, CCS components, etc. into a whole.

[0094] In addition, in addition to the function of glue injection, the glue injection holes can also make the bracket lightweight, thereby helping to control the weight of the battery.

[0095] Please refer to Figure 7, which is a structural diagram of the electrical connection assembly 001 provided in an embodiment of the present application. Accordingly, an embodiment of the present application also provides an electrical connection assembly 001, which includes a CCS assembly 011, a BMS board 012, a BDU module 013a, and a bracket 002 provided in some embodiments of the present application. The CCS assembly 011 is installed on the first side. The BMS board 012 is installed in the first mounting groove 2171; the BDU module 013a is abutted against the first side wall 213. The electrical connection structure between the CCS assembly 011 and the BMS board 012 is located in the first through hole 214. The electrical connection structure between the BMS board 012 and the BDU module 013a is located in the first notch 215.

[0096] The CCS assembly 011 includes a first output pole 111 and multiple busbar groups 112. The BMS board 012 includes a second output pole 122 and multiple voltage collection terminals 121, as shown in Figure 8 . Figure 8 is a schematic diagram of the structure of the BMS board 012 according to an embodiment of the present application. Typically, the voltage collection terminals 121 at both ends of the BMS board 012 are used to collect the output pole voltage of the battery modules. The first output pole 111 and the multiple busbar groups 112 correspond one-to-one with the multiple voltage collection terminals 121. The first output pole 111 and the multiple busbar groups 112 are each electrically connected to the corresponding voltage collection terminal 121. The voltage collection terminal 121 electrically connected to the first output pole 111 is also electrically connected to the second output pole 122. The BDU module 013a includes a first input pole 131a, which is electrically connected to the second output pole 122, as shown in Figure 9 , which is a schematic diagram of the electrical connection structure between the electrical components according to an embodiment of the present application.

[0097] It will be understood that the aforementioned input electrodes include positive and negative input electrodes, and the output electrodes include positive and negative output electrodes. The positive input electrode is electrically connected to the corresponding positive output electrode, and the negative input electrode is electrically connected to the corresponding negative output electrode. The electrical connection between the first output electrode 111 and the busbar 112 and the voltage collection terminal 121 can be achieved by welding, abutting, or plugging. Correspondingly, the electrical connection between the first input electrode 131a and the second output electrode 122 can be achieved by welding, abutting, or plugging.

[0098] The material of the CCS component is AL 1060-O. Correspondingly, the first output pole 111 and the bus bar 112 are aluminum bars, and the second output pole 122 and the first input pole 131a are copper bars.

[0099] In addition, multiple busbar groups 112 are arranged in sequence along the first direction, and there are two first output poles 111, namely a positive first output pole and a negative first output pole, and the two first output poles are respectively located at both ends of the arrangement direction of the multiple busbar groups 112. The busbar group includes a main parallel bar 1121 and two busbar units 1125 symmetrically arranged along the first direction. The busbar unit 1125 includes a plurality of series bars 1122 and a sub-parallel bar 1123 that connects the plurality of series bars 1122 in parallel. One end of the main parallel bar 1121 is connected to the sub-parallel bar 1123 of one busbar unit, and the other end is connected to the sub-parallel bar 1123 of another busbar unit, as shown in Figure 10, which is a schematic structural diagram of the busbar group 112 provided in an embodiment of the present application. Among them, the main parallel bar 1121 is connected to the voltage collection end of the BMS board.

[0100] In this embodiment, by sequentially electrically connecting the CCS assembly 011, the BMS board 012, and the BDU module 013a, the BMS board 012 can both collect information about the battery cells and output high-voltage current from the CCS assembly 011 to the BDU module 013a via the BMS board 012. This allows the CCS assembly to utilize a single set of first output electrodes 111 for both voltage signal transmission and high-voltage current output, thereby reducing the number of first output electrodes 111 required. This ultimately reduces the material cost and associated installation process costs of the battery module's electrical connectors, thereby improving installation efficiency. Furthermore, components such as jumper bars, bolts, wiring harnesses, connectors, and the associated installation process can be eliminated, further reducing the material cost and associated installation process costs of the electrical connectors, thereby improving installation efficiency.

[0101] In addition, in this embodiment, based on the bracket 002, on the one hand, the CCS component 011, the BMS board 012 and the BDU module 013a can be connected together more closely, thereby improving the compactness of the structure of the electrical connection component 001; on the other hand, these components can be supported and positioned based on the bracket 002, thereby improving the stress state of the electrical connection parts therebetween, thereby making the electrical connection state between these components more stable.

[0102] Please refer to Figure 11, which is a schematic diagram of the structure of a BDU module 013a provided in an embodiment of the present application. In one embodiment, the first input terminal 131a is plugged into the second output terminal 122. Specifically, a socket 1311 is provided at one end of the first input terminal 131a near the second output terminal 122, and the second output terminal 122 is inserted into the socket 1311.

[0103] In this embodiment, by plugging the first input pole 131a into the second output pole 122, the BDU module 013a can be positioned relative to the BMS board 012 based on this plug-in structure, thereby improving the positioning accuracy of the BDU module 013a. Furthermore, the electrical connection structure between the first input pole 131a and the second output pole 122 is simplified, easy to operate, and facilitates subsequent maintenance.

[0104] The first input pole 131a is provided with a first bolt hole 1312. The second output pole 122 is provided with a second bolt hole 1221. A nut is provided within the BDU module 013a. The end of the bolt passes through one end of the first bolt hole 1312, the second bolt hole 1221, and the other end of the first bolt hole 1312, before being threadedly connected to the nut. This secures the first input pole 131a and the second output pole 122 to each other, completing the high-voltage circuit connection and improving the electrical connection stability between the BDU module 013a and the BMS board 012.

[0105] Please refer to Figure 12, which is an exploded view of a BDU module 013a provided in an embodiment of the present application. In one embodiment, the BDU module 013a includes a housing 132a, a first high-voltage protection cover 134, a second high-voltage protection cover 135a, an energy distribution unit, a first input terminal 131a, and a third output terminal 136. The housing 132a defines a receiving cavity, an input slot 1321, and an output slot 1322. The input slot 1321 is located on the side of the housing 132a facing away from the BMS board 012. The output slot 1322 is located on the side of the housing 132a closer to the first bracket 216. The first input terminal 131a is positioned in the input slot 1321, and the first high-voltage protection cover 134 covers the input slot 1321 to insulate the first input terminal 131a from the outside world. The positive and negative poles of the first input terminal 131a are spaced apart along the axial direction of the first through-hole 214. The third output pole 136 is disposed in the output slot 1322, and the second high-voltage protection cover 135a covers the output slot 1322 to insulate the third output pole 136 from the outside world. An energy distribution unit is disposed in the accommodating cavity and electrically connects the first input pole 131a and the third output pole 136. The third output pole 136 includes a third positive output pole and a third negative output pole. The third positive output pole is electrically connected to the positive pole of the first input pole 131a, and the third negative output pole is electrically connected to the negative pole of the first input pole 131a. The first input pole 131a is electrically connected to the second output pole.

[0106] 12 , in one embodiment, the third output electrode 136 includes a third positive output electrode and a third negative output electrode. An insulating spacer 137 is disposed between the third positive output electrode and the third negative output electrode, and the insulating spacer 137 is connected to the housing 132a.

[0107] It will be appreciated that when the distance between the third positive output electrode and the third negative output electrode is small, an insulating spacer 137 is provided between the third positive output electrode and the third negative output electrode to improve the operating stability of the BDU module 013a. Insulating spacer 137 is connected to the housing 132a. Thus, by providing insulating spacer 137 between the third positive output electrode and the third negative output electrode, the insulation between the third positive output electrode and the third negative output electrode can be improved, thereby improving the operating stability of the BDU module 013a.

[0108] Please refer to Figure 13, which is a schematic diagram of the structure of bracket 002 from another perspective provided in an embodiment of the present application. In one embodiment, second bracket 217 has a second sidewall disposed opposite first sidewall 213, and the second sidewall is provided with a threading hole 2172. The side of BMS board 012 facing away from first notch 215 abuts against the end of first mounting slot 2171 facing away from first notch 215, and the data port of BMS board 012 is disposed opposite threading hole 2172.

[0109] In this embodiment, the provision of threading holes 2172 allows data cables to be connected to the data interface of the BMS board 012 through these holes, thereby facilitating signal connections between the BMS board 012 and other control systems. Furthermore, the BMS board 012 abuts against the end of the first mounting slot 2171 facing away from the first notch 215. This abutment restricts the movement of the BMS board 012 when the BDU module 013a and the BMS board 012 are plugged in. This eliminates the need for manual positioning of the BMS board 012, improving assembly convenience and efficiency.

[0110] Please refer to Figure 14, which is an exploded view of a battery module provided in accordance with an embodiment of the present application. Accordingly, an embodiment of the present application further provides a battery module comprising a cell holder, a cell 018, and an electrical connection assembly provided in accordance with some embodiments of the present application; the cell holder comprises a base 003 and a top cover 013. The base 003 is provided with mounting slots, which include a cell mounting slot 035, a BMS mounting slot 036, and a BDU mounting slot 037; the top cover 013 covers the mounting slots; the cell 018 is disposed in the cell mounting slot 035; the first bracket 216 is located between the base 003 and the top cover 013, the CCS assembly 011 is located on the side of the first bracket 216 close to the top cover 013, the second bracket 217 is inserted into the BMS mounting slot 036, and the BDU module 013a is located in the BDU mounting slot 036.

[0111] Among them, the exploded view of the battery cell bracket is shown in Figure 15, which is an exploded view of the battery cell bracket provided in an embodiment of the present application.

[0112] In the related art, the power battery transmits the heat exchange medium to the thermal management component at the battery module end through the pipeline to perform heat exchange on the battery cells, thereby completing the temperature management of the battery cells and keeping the battery cells within the normal operating temperature. In this temperature management method, the thermal management component is usually a plate-like structure, which uses a long serpentine tube to circulate the heat exchange medium. However, the pipeline stroke of the long serpentine tube is long, which leads to a long temperature management cycle, that is, the time for the heat exchange medium to flow from the liquid inlet of the thermal management component to each battery cell is long, which makes its temperature management efficiency low. In addition, the heat exchange medium needs to first perform heat exchange with the battery cell at the liquid inlet end, which results in that when the heat exchange medium flows to the battery cell far away from the liquid inlet end, the temperature difference between the heat exchange medium and the battery cell far away from the liquid inlet end is not large, thereby causing the thermal management component to fail to manage the temperature of the battery cell far away from the liquid inlet end.

[0113] Based on this, the present application provides the following embodiments to solve the above problems.

[0114] In some embodiments, a cavity configured to accommodate a heat exchange medium is provided within the cell holder. A flow channel is provided on the surface of the cell holder, connecting the cavity to the outside world. The heat exchange medium is configured to exchange heat with the components in the mounting slot and / or the CCS assembly 011.

[0115] It can be understood that the heat exchange medium is configured to heat exchange with the components in the installation slot, or the heat exchange medium is configured to heat exchange with the CCS assembly 011, or the heat exchange medium is configured to heat exchange with the components in the installation slot and the CCS assembly 011.

[0116] The flow channel includes a liquid discharge port 014, a liquid inlet 015, an air inlet 016, and an air outlet 017. The flow channel is provided on the base 003 or the top cover 013. Alternatively, part of the flow channel is provided on the base 003 and the other part is provided on the top cover 013.

[0117] It is understood that the cavity is filled with a heat exchange medium, such as purified water, distilled water, thermal fluid, etc. When the temperature needs to be increased, the heat exchange medium can heat the battery; when the temperature needs to be decreased, the heat exchange medium can cool the battery.

[0118] In addition, the flow channel is a channel for inputting external heat exchange medium into the cavity or discharging heat exchange medium from the cavity. Therefore, the flow channel includes a liquid discharge port 014 and a liquid inlet 015. The flow channel can be set in the same component or in different components.

[0119] Exemplarily, the drain port 014 and the liquid inlet 015 are provided on the base 003. When the base 003 performs thermal management on the battery, the heat exchange medium in the cavity exchanges heat with the battery cell. When the temperature of the heat exchange medium in the cavity reaches a first preset value, or after the heat exchange is carried out for a certain period of time, the drain port 014 is opened. At this time, the liquid inlet 015 is closed. The heat exchange medium in the cavity flows into the temperature management module through the drain port 014. The temperature management module performs temperature management on the heat exchange medium so that the temperature of the heat exchange medium reaches a second preset value. For example, when the second preset value is 50°C, the heat exchange medium is heated to 50°C; when the second preset value is 10°C, the heat exchange medium is cooled to 10°C. After the heat exchange medium in the cavity is discharged, the liquid inlet 015 is opened and the drain port 014 is closed. New heat exchange medium flows into the cavity from the liquid inlet. When the heat exchange medium fills the cavity. When the temperature of the heat exchange medium in the cavity reaches a first preset value or after a certain period of time, the above steps can be repeated to discharge the heat exchange medium and fill it with new heat exchange medium to continuously manage the temperature of the battery.

[0120] In this embodiment, by providing a cavity configured to accommodate a heat exchange medium inside the cell holder, the cell holder can both support and fix components such as the cell and perform thermal management on them, thereby improving the structural compactness of the battery module.

[0121] Furthermore, this embodiment manages the thermal performance of the battery cells through a reciprocating cycle of filling and emptying the cavity, rather than the conventional continuous flow of the heat exchange medium. This eliminates the need for insulating walls within the cavity to ensure a single flow direction for the heat exchange medium, simplifying the internal structure of the cell holder. This simplifies the manufacturing process of the cell holder and helps control manufacturing costs.

[0122] In some embodiments, the base 003 is provided with a first cavity 311 configured to accommodate a heat exchange medium, which is configured to exchange heat with the components located in the mounting slot. Furthermore, the base 003 is provided with a flow channel, which is configured to connect the first cavity 311 to the outside world. In this way, the base 003 can be used to thermally manage the battery cells 018, BMS board 012, and BDU module 013a located in the mounting slot, thereby improving the reliability of the battery module.

[0123] In some embodiments, the top cover 013 is provided with a third cavity 131 configured to accommodate a heat exchange medium, and the third cavity 131 is connected to the first cavity 311; wherein, a flow channel is provided on the base 003 and / or the top cover 013, and the flow channel is configured to connect the third cavity 131 and the first cavity 311 with the outside world.

[0124] Specifically, a flow opening is provided on the base 003 , or a flow opening is provided on the top cover 013 , or a flow opening is provided on both the base 003 and the top cover 013 .

[0125] Exemplarily, the liquid inlet 015, the air inlet 016 and the air outlet 017 are provided on the top cover 013, and the liquid outlet 014 is provided on the base 003. Optionally, the liquid inlet 015 is located on the side wall of the top cover 013 adjacent to the base 003, and the liquid outlet 014 is located on the side wall of the base 003 adjacent to the top cover 013.

[0126] In this embodiment, the top cover 013 has a third cavity 131 , and the third cavity 131 is connected to the first cavity 311 , so that the interior of the top cover 013 can also be filled with a heat exchange medium, thereby enabling the temperature of the end of the battery cell facing away from the bottom plate 031 to be managed through the top cover 013 .

[0127] Furthermore, the CCS assembly 011, BMS board 012, and BDU module 013a are positioned between the top cover 013 and the base 003, allowing these three components to be temperature-managed. This allows for comprehensive temperature management of the battery cells 018 and electrical components, forming a unified temperature management system that integrates the temperature management components for the battery cells 018, CCS assembly 011, BMS board 012, and BDU module 013a. This allows for temperature management of more components with a minimum of components, reducing the risk of temperature management failure and the manufacturing cost of the temperature management components.

[0128] Please refer to Figures 16 and 17. Figure 16 is a structural schematic diagram of the base 003 provided in an embodiment of the present application, and Figure 17 is a structural schematic diagram of the base 003 provided in another direction in an embodiment of the present application. In one embodiment, the base 003 includes a bottom plate 031 and a plurality of thermal management columns 032. The bottom plate 031 is provided with a first cavity 311. A plurality of thermal management columns 032 are provided on the bottom plate 031. The thermal management columns 032 are provided with a second cavity 321. The second cavity 321 is connected to the first cavity 311, as shown in Figures 18 and 19. Figure 18 is a top view of the base 003 provided in an embodiment of the present application, and Figure 19 is a cross-sectional view along AA in Figure 18. An installation groove is defined between the thermal management columns 032. Among them, at least any one of the bottom plate 031, the thermal management columns 032 and the top cover 013 is provided with a flow channel opening. Part of the thermal management column 032 is connected to the top cover, and the second cavity 321 of this part of the thermal management column 032 is connected to the third cavity 131, as shown in Figure 21 and Figure 22. Figure 21 is a top view of Figure 20, and Figure 22 is a cross-sectional view of BB in Figure 21. Among them, the bottom plate 031 and the top cover 013 are provided with flow channel openings.

[0129] As can be understood, the flow openings include a liquid drain port 014, a liquid inlet port 015, an air inlet port 016, and an air exhaust port 017, all of which are connected to the cavity. The flow openings may be located on the bottom plate 031, the thermal management column 032, or the top cover 013. Alternatively, some flow openings may be located on the bottom plate 031, while others may be located on the top cover 013. For example, the liquid inlet port 015, the air inlet port 016, and the air exhaust port 017 may be located on the top cover 013, while the liquid drain port 014 may be located on the bottom plate 031.

[0130] When filling with heat exchange medium, the second cavity 321, which is not directly connected to the third cavity 131, serves as the heat exchange terminal for the heat exchange medium. These second cavities 321 are arranged in no particular order along the heat exchange medium's transmission path; that is, the heat exchange medium in the first cavity 311 can enter these second cavities 321 simultaneously. This shortens the heat exchange medium's transmission path and reduces the time it takes for the heat exchange medium to fill the second cavities 321.

[0131] In this embodiment, by setting the base 003 as a combination of a bottom plate 031 and a thermal management column 032, on the one hand, the heat exchange medium can flow synchronously to multiple second cavities 321, so as to shorten the transmission path of the base 003 for the heat exchange medium, thereby speeding up the circulation speed of the heat exchange medium, and further shortening the temperature management cycle of the base 003, so as to provide an efficient cooling effect for the battery cell in a shorter time, and ultimately improve the temperature management efficiency of the base 003; on the other hand, some thermal management columns 032 serve as the end of the transmission path of the thermal management medium, and these thermal management columns 032 can be synchronously filled with liquid, thereby improving the temperature management efficiency of the base 003 for the battery cell away from the liquid inlet end.

[0132] Furthermore, this embodiment employs a reciprocating cycle of filling and emptying the cavity, rather than the conventional continuous flow of the heat exchange medium. This eliminates the need for an isolation wall within the second cavity 321 to ensure a single flow direction for the heat exchange medium within the second cavity 321, thereby simplifying the structure of the base 003. This simplifies the manufacturing process for the base 003 and helps control its manufacturing costs.

[0133] Furthermore, the bottom plate 031 has the function of supporting and positioning the battery cells, so that the battery cells can be directly installed on the bottom plate 031, and the battery cell tray component can be eliminated. In this way, the assembly cost can be reduced and the assembly efficiency can be improved. Among them, the battery cell mounting groove is consistent with the shape and size of the battery cell. For example, when the battery cell is a cylindrical battery cell, the battery cell mounting groove is cylindrical. Specifically, the side wall of the thermal management column 032 facing the battery cell is a cylindrical arc surface, and the cylindrical arc surface is coaxially arranged with the battery cell opposite thereto, as shown in Figure 16. And a thermal conductive glue is applied between the battery cell and the cylindrical arc surface to improve the thermal conductivity of the battery cell, thereby improving the temperature management efficiency.

[0134] In addition, connecting part of the thermal management column 032 to the top cover and communicating the second cavity 321 of this part of the thermal management column 032 with the third cavity 131 can not only improve the integrity of the battery cell bracket, but also improve the integrity of the thermal management pipeline, so that the layout of the thermal management pipeline is simpler and maintenance is more convenient.

[0135] Please refer to Figures 24 and 25. Figure 24 is an enlarged view of point C in Figure 22, and Figure 25 is a cross-sectional view of the second column provided in an embodiment of the present application. In one embodiment, the thermal management column 032 includes a first column 322 and a second column 323. The second cavity 321 of the first column 322 communicates with the third cavity 131, and the first column 322 is plugged into the top cover 013. The end of the second cavity 321 of the second column 323 away from the bottom plate 031 is closed, as shown in Figure 25.

[0136] In some embodiments, the thermal management column 032 connected to the top cover 013 is a first column 322, and a connecting ring 3225 is protruding from the end of the first column 322 facing away from the bottom plate 031. A first through-hole 2167 is provided on the first bracket 216, and the end of the connecting ring 3225 facing away from the first column 322 passes through the first through-hole 2167 and is sealed with the top cover 013. The second cavity 321 of the first column 322 is connected to the third cavity 131 through the inner hole of the connecting ring 3225.

[0137] In this embodiment, by passing the connecting ring 3225 through the first bracket 216 , the first bracket 216 can be prevented from rotating, thereby improving the position stability of the first bracket 216 relative to the first column 322 and further improving the structural stability of the battery holder.

[0138] In one embodiment, a first insertion shaft 134a is protruding from the side of the top cover 013 near the first column 322. The end of the first insertion shaft 134a facing away from the top cover 013 is inserted into the inner hole of the connecting ring 3225. The first insertion shaft 134a is provided with a first connecting hole 1341. The second cavity 321 of the first column 322 is connected to the third cavity 131 through the first connecting hole 1341. The outer circumference of the first insertion shaft 134a seals against the wall of the second cavity 321 of the first column 322.

[0139] It can be understood that a first through hole 2167 is provided on the first bracket 216 , and the end of the first column 322 facing away from the bottom plate 031 passes through the first through hole 2167 and is plugged into the top cover 013 .

[0140] In addition, the end of the second cavity 321 on the second column 323 away from the bottom plate 031 is a closed end and is not connected to the third cavity 131. There are multiple first columns 322, which are divided into two groups. The first columns 322 in each group are evenly spaced along the length of the BMS board 012. The two adjacent first columns 322 along the length are connected as a whole. There is a gap between the two groups of first columns 322, which is the BMS mounting slot 036.

[0141] For example, a first sealing ring 3223 is disposed between the outer circumference of the first insertion shaft 134a and the wall of the second cavity 321 of the first column 322. The first sealing ring 3223 is radially compressed to achieve a sealed fit between the two locations. The inner circumference of the first sealing ring 3223 can be embedded in the outer circumference of the first insertion shaft 134a. The first sealing ring 3223 can be an O-ring.

[0142] In this embodiment, by plugging the first column 322 into the top cover 013, the plug-in structure allows the top cover 013 to be positioned relative to the first column 322, thereby improving the positioning accuracy of the top cover 013. Furthermore, the plug-in structure reduces the resistance to the flow of the heat exchange medium, thereby improving the sealing of the connection between the top cover 013 and the first column 322, and preventing the heat exchange medium from leaking from this connection.

[0143] Referring to Figure 24 , in one embodiment, an annular groove 133 is provided around the periphery of the first insertion shaft 134a on the top cover 013. An insert ring 3224 is provided protruding from the end of the connecting ring 3225 facing away from the first column 322. The insert ring 3224 is sleeved onto the first insertion shaft 134a, and the end of the insert ring 3224 facing away from the connecting ring 3225 is inserted into the annular groove 133. The insert ring 3224 is in sealing engagement with the annular groove 133.

[0144] In this embodiment, by providing the annular groove 133 and the insert ring 3224, the top cover 013 is also positioned by the cooperation of the annular groove 133 and the insert ring 3224, thereby not only further improving the positioning accuracy of the top cover 013, but also improving the stability of the connection between the top cover 013 and the first column 322.

[0145] Please refer to FIG. 24 . Specifically, the outer peripheral surface of the insert ring 3224 is sealed with the outer groove wall of the annular groove 133 .

[0146] For example, a second sealing ring 1225 is provided between the outer circumference of the insert ring 3224 and the outer wall of the annular groove 133. The second sealing ring 1225 is under radial pressure to achieve a sealing fit between the two parts. The second sealing ring 1225 is a rectangular sealing ring.

[0147] In this embodiment, the outer peripheral surface of the insert ring 3224 is sealed with the outer groove wall of the annular groove 133, thereby improving the sealing performance of the connection between the top cover 013 and the first column 322, thereby preventing the heat exchange medium from leaking from the connection between the top cover 013 and the first column 322.

[0148] Please refer to FIG. 24 . In one embodiment, a fitting hole 135 is provided on a side of the top cover 013 facing the bottom plate 031 . An end of the connecting ring 3225 facing away from the first column 322 is inserted into the fitting hole 135 .

[0149] In this embodiment, by plugging the connecting ring 3225 into the top cover 013, the matching structure between the base 003 and the top cover 013 can be increased, thereby further improving the matching accuracy between the base 003 and the top cover 013, thereby avoiding the misalignment of the connecting part between the third cavity 131 and the first cavity 311, and ultimately improving the structural stability of the battery cell bracket.

[0150] In one embodiment, the cross section of the connecting ring 3225 is polygonal, and the cross-sectional shapes of the first through-hole 2167 and the second through-hole 551 are consistent with the cross-sectional shape of the connecting ring 3225 .

[0151] Exemplarily, the cross-section of the connecting ring 3225 is polygonal, and the cross-sectional shapes of the first through-hole 2167 and the cross-sectional shapes of the second through-hole 551 are consistent with the cross-sectional shapes of the connecting ring 3225. For example, if the connecting ring 3225 is a triangular ring with a triangular cross-section and three rounded edges, the cross-sectional shapes of the first through-hole 2167 and the second through-hole 551 are triangular with rounded corners. Both the first through-hole 2167 and the second through-hole 551 have a clearance fit with the connecting ring 3225.

[0152] Please refer to Figure 23. In one embodiment, the base 003 and the top cover 013 are metal parts, and the battery cell holder also includes an insulating sheet 055. The insulating sheet 055 is arranged between the CCS component 011 and the top cover 013. The insulating sheet 055 is provided with a second through-hole 551. One end of the connecting ring 3225 is passed through the first through-hole 2167 and the second through-hole 551 and is sealed with the top cover 013.

[0153] As can be understood, constructing the base 003 and top cover 013 from metal enhances their strength, thereby providing more stable and reliable support for the battery cells. To prevent short circuits caused by contact between the CCS assembly 011 and the metal base 003 and top cover 013, an insulating sheet 055 is installed on the side of the CCS assembly 011 near the top cover 013 to isolate the CCS assembly from the metal base 003 and top cover 013. To further enhance current transmission stability, an insulating layer, insulating rubber sleeve, or the like can be installed around the periphery of the battery cell 018 to insulate the periphery of the battery cell 018 from the base 003.

[0154] Furthermore, a second through-hole 551 is provided on the insulating sheet 055. The end of the connecting ring 3225 facing away from the bottom plate 031 passes through the first through-hole 2167 and the second through-hole 551, respectively, before being plugged into the top cover 013. Thus, in this embodiment, by inserting the connecting ring 3225 through the insulating sheet 055, the insulating sheet 055 is prevented from rotating, thereby improving the positional stability of the insulating sheet 055 relative to the first column 322 and, consequently, the structural stability of the battery cell holder.

[0155] Please refer to Figure 24. In one embodiment, a matching ring 552 is provided on one side of the insulating sheet 055 close to the first bracket 216. One end of the matching ring 552 is connected to the insulating sheet 055, and the other end is located in the annulus between the first through hole 2167 and the connecting ring 3225.

[0156] In this embodiment, by providing the matching ring 552 , the matching area between the insulating sheet 055 and the connecting ring 3225 and the first bracket 216 can be increased, thereby preventing the insulating sheet 055 from shaking randomly and improving the position stability of the insulating sheet 055 .

[0157] In one embodiment, the cross-sectional shape of the second through-hole 551 is consistent with the cross-sectional shape of the connecting ring 3225 , thereby improving the reliability of the fit between the insulating sheet 055 and the connecting ring 3225 .

[0158] Please refer to Figure 26, which is a schematic diagram showing the mating of top cover 013 and base 003, from another perspective, according to an embodiment of the present application. In one embodiment, the flow channel includes a liquid discharge port 014, a liquid inlet 015, an air inlet 016, and an air outlet 017, all connected to the cavity. The liquid inlet 015, air inlet 016, and air outlet 017 are located on top cover 013, while the liquid discharge port 014 is located on base 003.

[0159] Exemplarily, the air inlet 016 and the air outlet 017 are disposed on the top of the top cover 013. For example, the air inlet 016 and the air outlet 017 are located on the side of the top cover 013 facing away from the bottom plate 031, so as to facilitate smoother air intake and exhaust of the cavity. Furthermore, to prevent the heat exchange medium from being discharged through the exhaust port, the air inlet 016 and the air outlet 017 may be covered with a gas-selective permeable membrane, so that only gas can pass through the air inlet 016 and the air outlet 017.

[0160] When the heat exchange medium in the cavity is discharged, air inlet 016 and liquid drain port 014 are opened. At this time, air outlet 017 and liquid inlet 015 are closed. The heat exchange medium in the cavity flows into temperature management module 042 through liquid drain port 014. Air is taken in through air inlet 016 to fill the reduced space occupied by the heat exchange medium in the cavity, thereby facilitating the rapid discharge of the heat exchange medium. After the heat exchange medium in the cavity is discharged, air outlet 017 and liquid inlet 015 are opened, and air inlet 016 and liquid drain port 014 are closed. New heat exchange medium flows into the cavity from the liquid inlet. Simultaneously, the air in the cavity is discharged through air outlet 017, facilitating the rapid filling of the cavity with the heat exchange medium.

[0161] In this embodiment, by providing the air inlet 016 and the exhaust port 017, on the one hand, it is possible to avoid the formation of negative pressure in the cavity during liquid discharge that hinders the discharge of the heat exchange medium, making the liquid discharge smoother; on the other hand, it is also possible to avoid the presence of air in the cavity during liquid intake that causes insufficient liquid intake, thereby ensuring liquid intake efficiency and temperature management efficiency.

[0162] In one embodiment, the thermal management pillars 032 and the base plate 031 are integrally formed.

[0163] For example, the bottom plate 031 includes a cover plate and a box body with an opening, wherein the cover plate covers the opening to seal and isolate the inner cavity of the box body from the outside. The thermal management column 032 can be set on the cover plate or on the box body.

[0164] In this embodiment, the heat management column 032 and the base plate 031 are integrally formed to enhance the connection strength between the heat management column 032 and the base plate 031 , thereby preventing the heat exchange medium from leaking from the connection between the heat pipe column and the base plate 031 .

[0165] In one embodiment, the battery cell 018 is a cylindrical battery cell, and the side wall of the thermal management column 032 facing the battery cell 018 is a cylindrical arc surface, and the cylindrical arc surface is coaxially arranged with the battery cell 018 opposite thereto.

[0166] In one embodiment, a BDU module installation area is provided on the surface of the bottom plate 031 connected to the thermal management column 032 . The BDU module installation area is at least partially surrounded by the thermal management column 032 to form a BDU installation slot 037 .

[0167] In this embodiment, by setting the BDU mounting groove 037 on the surface where the bottom plate 031 and the thermal management column 032 are connected, the overall structural compactness of the battery module can be improved, thereby controlling the volume of the battery module and shortening the electrical connection path related to the battery module.

[0168] Please refer to Figures 27 and 28. Figure 27 is a schematic diagram of the electrical connections of some electrical components of a battery module provided in an embodiment of the present application. Figure 28 is a schematic diagram of the hydraulic principle of the thermal management system of a battery module provided in an embodiment of the present application. In one embodiment, the flow channel includes a liquid inlet 015, a liquid discharge port 014, an air inlet 016, and an exhaust port 017. The battery module also includes a temperature management module 042, an output line 043, an input line 044, a liquid discharge solenoid valve 045, a liquid inlet solenoid valve 046, an air intake solenoid valve 047, an exhaust solenoid valve 048, a hydraulic pump, a detection module 93, and a controller 94. The temperature management module 042 is configured to perform temperature management on the heat exchange medium; the two ends of the output pipeline 043 are respectively connected to the drain port and the temperature management module 042; the two ends of the input pipeline 044 are respectively connected to the liquid inlet and the temperature management module 042; the drain solenoid valve 045 is configured to control the on-off of the drain port; the liquid inlet solenoid valve 046 is configured to control the on-off of the liquid inlet; the air intake solenoid valve 047 is configured to control the on-off of the air inlet; the exhaust solenoid valve 048 is configured to control the on-off of the exhaust port; the hydraulic pump is configured to drive the flow of the heat exchange medium in the input pipeline 044 and the output pipeline 043; the detection module 93 is configured to detect the filling amount of the heat exchange medium in the base 003; the controller 94 responds to the detection information of the detection module 93 and controls the working status of the drain solenoid valve 045, the liquid inlet solenoid valve 046, the air intake solenoid valve 047, the exhaust solenoid valve 048 and the hydraulic pump.

[0169] It can be understood that there are two hydraulic pumps, namely a first hydraulic pump 091 for driving the heat exchange medium in the input pipeline 044 to flow and a second hydraulic pump 092 for driving the heat exchange medium in the output pipeline 043 to flow.

[0170] Exemplarily, controller 94 is a BMS board 012. Detection module 93 is a fluid pressure sensor used to collect fluid pressure information within the cavity. When heating battery cell 018 is required, temperature management module 042 is a device that heats the heat exchange medium, such as a pipe wrapped with a heating wire or a cylinder. When cooling battery cell 018 is required, temperature management module 042 is a device that cools the heat exchange medium, such as an evaporator equipped with a fan or a finned heat pipe.

[0171] Please refer to Figures 29-31. Figure 29 is a schematic diagram of the mating structure of the base and bracket provided in an embodiment of the present application. Figure 30 is an enlarged view of point D in Figure 29, and Figure 31 is an enlarged view of point E in Figure 23. A stepped groove 034 is provided on the side of the base 003 near the end of the BMS mounting slot 036. Stepped groove 034 communicates with BMS mounting slot 036. A retaining plate 2173 is provided on the sidewall of the second bracket 217 near the end of the first mounting slot 2171. Retaining plate 2173 engages with stepped groove 034. Specifically, stepped groove 034 is provided on the side of the first column 322 near the first notch 215. This improves the positioning accuracy of the second bracket 217 relative to the base 003, thereby improving the positioning accuracy of the CCS assembly on the second bracket 217 relative to the battery cell 018 on the base 003. As a result, the operability of the electrical connection between the CCS assembly 011 and the battery cell 018 is improved, thereby improving the stability of the electrical connection between the CCS assembly 001 and the battery cell 018.

[0172] Optionally, the base plate 031 is rectangular, having a centerline parallel to the long sides, and the heat pipe columns adjacent to the centerline are first columns 322, as shown in FIG18 . The plurality of first columns 322 are divided into two groups, with the plurality of first columns 322 in each group being evenly spaced along the centerline, and the two groups of first columns 322 being symmetrically arranged about the centerline. The plurality of first columns 322 in each group are sequentially connected to form a whole.

[0173] Please refer to FIG. 23 . In one embodiment, an internal thread column 312 is provided on the base 003 , and the top cover 013 is detachably connected to the internal thread column 312 .

[0174] Specifically, a third bolt through hole 132 is provided on the top cover 013 , and the end of the screw rod of the bolt passes through the third bolt through hole 132 and is threadedly connected to the internal thread column 312 .

[0175] Exemplarily, third bolt holes 132 are provided on the four corners of the top cover 013, and internal threaded columns 312 are provided on the four corners of the bottom plate 031. The bolts pass through the third bolt holes 132 and are threadedly connected to the internal threaded columns 312, so that the top cover 013 is detachably fixed to the bottom plate 031, thereby improving the position stability of the top cover 013 and the connection stability between the first cavity 311 and the third cavity 131.

[0176] Please refer to Figure 15 or Figure 16. In one embodiment, there are multiple battery cell mounting slots 035, and the multiple battery cell mounting slots 035 are divided into two groups. The BMS mounting slot 036 is located between the two groups of battery cell mounting slots 035, and the BDU mounting slot 037 is located at one end of the BMS mounting slot 037 and is arranged adjacent to the two groups of battery cell mounting slots 035.

[0177] In the embodiment, by limiting the relative positions of the three mounting slots, the battery cell holder is made into a symmetrical structure. On the one hand, the arrangement neatness of components such as the battery cell 018 can be improved, thereby enhancing the convenience of assembly and maintenance; on the other hand, the load of the base 003 can be balanced, so that the gravity borne by the base 003 from the battery cell 018 and the like is more evenly distributed, thereby reducing the overload on one side of the base 003 or the unbalanced force on both sides, thereby improving the stability and carrying capacity of the base 003.

[0178] Please refer to FIG. 15 or FIG. 16 . In one embodiment, a communication groove 351 is provided between two adjacent battery cell mounting grooves 035 .

[0179] It is understood that in order to improve the stability of the battery cell 0018 and prevent it from shaking relative to the battery cell holder, glue needs to be poured between the battery cell holder and the battery cell 018, thereby connecting the battery cell 018 and the battery cell holder as a whole. Therefore, in order to improve the fluidity of the glue and the uniformity of the poured glue, a connecting groove 351 is provided to connect two adjacent battery cell mounting grooves 035, so that the glue can flow through the connecting groove 351.

[0180] In addition, a connecting groove 351 may be provided between the BDU installation groove 037 and the battery cell installation groove 035 to further improve the uniformity of the glue poured into the battery cell bracket.

[0181] Based on the above embodiment, the thermal management process of the battery is as follows:

[0182] S001, filling the cavity

[0183] First, the controller 94 controls the liquid inlet solenoid valve 046 and the exhaust solenoid valve 048 to open, the liquid discharge solenoid valve 045 and the air intake solenoid valve 047 to close, and starts the first hydraulic pump 091 to make the first hydraulic pump 091 deliver the heat exchange medium in the temperature management module 042 into the cavity through the input pipe 044; then, when the cavity is full of heat exchange medium, the detection module 93 detects the first fluid pressure value and sends the information to the controller 94, and the controller 94 closes the first hydraulic pump 091, the liquid inlet solenoid valve 046 and the exhaust solenoid valve 048 in response to the information.

[0184] S002, empty the cavity

[0185] First, the controller 94 controls the liquid discharge solenoid valve 045 and the air intake solenoid valve 047 to open, and starts the second hydraulic pump 092, so that the second hydraulic pump 092 sends the heat exchange medium in the cavity into the temperature management module 042 through the output pipe 043. At this time, the liquid intake solenoid valve 046 and the exhaust solenoid valve 048 are in the closed state; then, when the cavity is emptied, the detection module 93 detects the second fluid pressure value and sends the information to the controller 94. The controller 94 closes the second hydraulic pump 092, the liquid intake solenoid valve 046 and the exhaust solenoid valve 048 in response to the information.

[0186] S003. Repeat the above steps S001 and S002.

[0187] The trigger condition for emptying the cavity may be that the controller operates according to the time it takes for the cavity to be filled with the heat exchange medium. For example, the time it takes for the cavity to be filled with the heat exchange medium may be set to 10 minutes as the trigger condition.

[0188] In addition, the temperature of the heat exchange medium in the cavity can also be used as a trigger condition. In this case, a fluid temperature sensor needs to be set in the cavity to collect the temperature information of the heat exchange medium. When the collected temperature information exceeds or falls below the threshold, the cavity is emptied and the next round of cavity filling is carried out. For example, when the battery needs to be heated, when the collected temperature information is lower than 5°C, the cavity is emptied and the next round of cavity filling is carried out to heat the battery; when the battery needs to be cooled, when the collected temperature information exceeds 50°C, the cavity is emptied and the next round of cavity filling is carried out to cool the battery.

Claims

1. A bracket (002), comprising: A first bracket (216) having a first side and a second side opposite to each other, wherein the first side is configured to mount the CCS assembly (011); a second bracket (217) extending from the second side in a direction away from the first bracket (216); a first mounting groove (2171) configured to mount a BMS board (012) is provided on a side of the second bracket (217) facing away from the first bracket (216); a first notch (215) penetrating a first side wall (213) of the second bracket (217) is provided at one end of the first mounting groove (2171); and the first side wall (213) is configured to contact the BDU module (013a); The first side is provided with a first through hole (214), the first through hole (214) being connected to the bottom of the first mounting groove (2171), and the first through hole (214) being used for electrically connecting the CCS assembly (011) with the BMS board (012), and the first notch (215) being used for electrically connecting the BMS board (012) with the BDU module (013a).

2. The bracket (002) according to claim 1, wherein: The first side is provided with a second mounting groove configured to mount a CCS assembly (011), and the first through hole (214) is arranged at the bottom of the second mounting groove.

3. The bracket (002) according to claim 2, wherein: The second installation groove comprises a plurality of sub-grooves (2161), and the bottom of each sub-groove (2161) is provided with the first through hole (214).

4. The bracket (002) according to claim 3, wherein: The plurality of sub-grooves (2161) are arranged in sequence along the first direction, and along the second direction, two ends of the sub-grooves (2161) are symmetrical to each other, and the first direction and the second direction are perpendicular to each other.

5. The bracket (002) according to claim 3, wherein: The groove bottom of the sub-groove (2161) is provided with a matching rib (2162), and the matching rib (2162) is provided with a second through hole (2163).

6. The bracket (002) according to claim 5, wherein: The matching rib (2162) comprises a first segment (2164) and a second segment (2165), one end of the first segment (2164) is connected to the groove wall of the sub-groove (2161), and the other end is connected to one end of the second segment (2165), and an angle is formed between the first segment (2164) and the second segment (2165), and at least part of the groove wall of the sub-groove (2161), the first segment (2164) and the second segment (2165) enclose a hole wall of the second through hole (2163).

7. The bracket (002) according to claim 6, wherein: The angle between the first segment (2164) and the second segment (2165) ranges from 100° to 170°.

8. The bracket (002) according to claim 1, wherein: The second side is provided with a battery cell (018) installation area (218), and there are two battery cell (018) installation areas (218), which are respectively located on both sides of the second bracket (217); and a pole connection hole (21612) is also provided from the first side to the inside of the first bracket (216), and the pole connection hole (21612) is connected to the battery cell (018) installation area (218).

9. The bracket (002) according to any one of claims 1 to 8, wherein: The first bracket (216) and the second bracket (217) are integrally formed.

10. The bracket (002) according to any one of claims 1 to 9, wherein: A positioning opening (2131) is provided at one end of the first side wall (213) away from the first bracket (216), and the positioning opening (2131) is communicated with the first notch (215).

11. The bracket (002) according to any one of claims 1 to 10, wherein: The first bracket (216) is provided with a plurality of glue injection through holes (2166).

12. An electrical connection assembly (001), comprising: comprising a bracket (002) as claimed in any one of claims 1 to 11; A CCS assembly (011), mounted on the first side; A BMS board (012), installed in the first installation slot (2171); A BDU module (013a) abuts against the first side wall (213); The electrical connection structure between the CCS assembly (011) and the BMS board (012) is located in the first through hole (214), and the electrical connection structure between the BMS board (012) and the BDU module (013a) is located in the first notch (215).

13. The electrical connection assembly (001) according to claim 12, wherein: The CCS component (011) comprises a first output pole (111) and a plurality of busbar (112) groups; the BMS board (012) comprises a second output pole (122) and a plurality of voltage collection terminals (121); the first output pole (111) and the plurality of busbar (112) groups correspond to the plurality of voltage collection terminals (121) in a one-to-one manner; the first output pole (111) and the plurality of busbar (112) groups are respectively electrically connected to the corresponding voltage collection terminals (121); the voltage collection terminals (121) electrically connected to the first output pole (111) are also electrically connected to the second output pole (122); the BDU module (013a) comprises a first input pole (131a); the first input pole (131a) is electrically connected to the second output pole (122).

14. The electrical connection assembly (001) according to claim 13, wherein: The first input pole (131a) is plugged into the second output pole (122).

15. The electrical connection assembly (001) according to claim 14, wherein: An insertion hole (1311) is provided at one end of the first input pole (131a) close to the second output pole (122), and the second output pole (122) is inserted into the insertion hole (1311).

16. The electrical connection assembly (001) according to any one of claims 13 to 15, wherein: The BDU module (013a) comprises: A housing (132a) is provided with a receiving cavity, an input slot (1321) and an output slot (1322), wherein the input slot (1321) is located on a side of the housing (132a) away from the BMS board (012), and the output slot (1322) is located on a side of the housing (132a) close to the first bracket (216); The first input pole (131a) is arranged in the input slot (1321); A third output pole (136), disposed in the output slot (1322); A first high-voltage protection cover (134), covering the input slot (1321); A second high-voltage protection cover (135a), covering the output slot (1322); An energy distribution unit is disposed in the accommodating cavity, and the energy distribution unit electrically connects the first input pole (131a) and the third output pole (136).

17. The electrical connection assembly (001) according to claim 16, wherein: The third output pole (136) comprises a third positive output pole and a third negative output pole, an insulating partition (137) is arranged between the third positive output pole and the third negative output pole, and the insulating partition (137) is connected to the housing (132a).

18. The electrical connection assembly (001) according to any one of claims 12 to 17, wherein: The second bracket (217) has a second side wall arranged opposite to the first side wall (213), the second side wall is provided with a threading hole (2172), and the data interface of the BMS board (012) is arranged opposite to the threading hole (2172).

19. A battery module, comprising: A battery cell support comprises a base (003) and a top cover (013), wherein the base (003) is provided with mounting grooves, wherein the mounting grooves comprise a battery cell mounting groove (035), a BMS mounting groove (036) and a BDU mounting groove (037); and the top cover (013) covers the mounting grooves; A battery cell (018) is arranged in the battery cell installation groove (035); And, according to any one of claims 12 to 18, the electrical connection assembly (001), the first bracket (216) is located between the base (003) and the top cover (013), the CCS assembly (011) is located on a side of the first bracket (216) close to the top cover (013), the second bracket (217) is inserted into the BMS installation slot (036), and the BDU module (013a) is located in the BDU installation slot (037).

20. The battery module according to claim 19, wherein: A cavity configured to accommodate a heat exchange medium is disposed inside the cell support, and a flow channel opening for connecting the cavity with the outside is disposed on the surface of the cell support. The heat exchange medium is configured to exchange heat with the components in the mounting groove and / or the CCS assembly (011).

21. The battery module according to claim 20, wherein: The base (003) is provided with a first cavity (311) configured to accommodate a heat exchange medium, wherein the heat exchange medium is configured to exchange heat with a component located in the mounting groove; Wherein, a flow channel is provided on the base (003), and the flow channel is configured to connect the first cavity (311) with the outside.

22. The battery module according to claim 21, wherein: The top cover (013) is provided with a third cavity (131) configured to accommodate a heat exchange medium, and the third cavity (131) is communicated with the first cavity (311); Wherein, a flow channel is provided on the base (003) and / or the top cover (013), and the flow channel is configured to connect the third cavity (131) and the first cavity (311) with the outside.

23. The battery module according to claim 22, wherein: The base (003) comprises: A bottom plate (031) provided with the first cavity (311); A plurality of heat management columns (032) are arranged on the bottom plate (031), the heat management columns (032) are provided with a second cavity (321), the second cavity (321) is communicated with the first cavity (311), and the installation groove is defined between the heat management columns (032); At least one of the bottom plate (031), the thermal management column (032) and the top cover (013) is provided with the flow channel opening, part of the thermal management column (032) is connected to the top cover (013), and the second cavity (321) of the part of the thermal management column (032) is connected to the third cavity (131).

24. The battery module according to claim 23, wherein: The thermal management column (032) comprises a first column (322) and a second column (323); the first cavity (311) is connected to the third cavity (131) through the second cavity (321) of the first column (322), and the first column (322) is connected to the top cover (013); an end of the second cavity (321) of the second column (323) away from the bottom plate (031) is a closed end.

25. The battery module according to claim 23, wherein: The thermal management column (032) connected to the top cover (013) is a first column (322); a connecting ring (3225) is protruding from one end of the first column (322) away from the bottom plate (031); a first through hole (2167) is provided on the first bracket (216); an end of the connecting ring (3225) away from the first column (322) passes through the first through hole (2167) and is sealed with the top cover (013); the second cavity (321) of the first column (322) is connected to the third cavity (131) through the inner hole of the connecting ring (3225).

26. The battery module according to claim 25, wherein: A first plug shaft (134a) is protrudingly provided on one side of the top cover (013) close to the first column (322), and the end of the first plug shaft (134a) facing away from the top cover (013) is inserted into the inner hole of the connecting ring (3225), and the first plug shaft (134a) is provided with a first connecting hole (1341), and the second cavity (321) of the first column (322) is connected with the third cavity (131) through the first connecting hole (1341); wherein, the outer peripheral surface of the first plug shaft (134a) is sealed with the cavity wall of the second cavity (321) of the first column (322).

27. The battery module according to claim 26, wherein: An annular groove (133) is provided on the top cover (013) around the periphery of the first plug shaft (134a), and an insert ring (3224) is protrudingly provided at one end of the connecting ring (3225) away from the first column (322), and the insert ring (3224) is sleeved on the first plug shaft (134a), and one end of the insert ring (3224) away from the connecting ring (3225) is inserted into the annular groove (133), and the insert ring (3224) is sealed and matched with the annular groove (133).

28. The battery module according to any one of claims 25 to 27, wherein: A matching hole (135) is provided on one side of the top cover (013) facing the bottom plate (031), and an end of the connecting ring (3225) facing away from the first column (322) is inserted into the matching hole (135).

29. The battery module according to any one of claims 25 to 28, wherein: The cross-section of the connecting ring (3225) is polygonal, and the shape of the cross-section of the first perforation (2167) is consistent with the shape of the cross-section of the connecting ring (3225).

30. The battery module according to any one of claims 25 to 29, wherein: The base (003) and the top cover (013) are metal parts, and the battery cell support also includes an insulating sheet (055). The insulating sheet (055) is arranged between the CCS component (011) and the top cover (013), and the insulating sheet (055) is provided with a second through hole (551). One end of the connecting ring (3225) is passed through the first through hole (2167) and the second through hole (551) and is sealed and connected to the top cover (013).

31. The battery module according to claim 30, wherein: A matching ring (552) is provided on one side of the insulating sheet (055) close to the first bracket (216), one end of the matching ring (552) is connected to the insulating sheet (055), and the other end is located in the annular space between the first through hole (2167) and the connecting ring (3225).

32. The battery module according to claim 30 or 31, wherein: The shape of the cross section of the second perforation (551) is consistent with the shape of the cross section of the connecting ring (3225).

33. The battery module according to any one of claims 23 to 32, wherein: The flow channel opening comprises a liquid discharge opening (014), a liquid inlet opening (015), an air inlet opening (016) and an air exhaust opening (017); the liquid inlet opening (015), the air inlet opening (016) and the air exhaust opening (017) are arranged on the top cover (013); and the liquid discharge opening (014) is arranged on the bottom plate (031).

34. The battery module according to any one of claims 23 to 33, wherein: The base plate (031) and the heat management column (032) are integrally formed.

35. The battery module according to any one of claims 23 to 34, wherein: The battery cell (018) is a cylindrical battery cell (018), and the side wall of the thermal management column (032) facing the battery cell (018) is a cylindrical arc surface, and the cylindrical arc surface is coaxially arranged with the battery cell (018) opposite thereto.

36. The battery module according to any one of claims 23 to 35, wherein: A BDU module installation area is provided on the surface of the bottom plate (031) connected to the thermal management column (032), and the BDU module installation area is at least partially surrounded by the thermal management column (032) to form the BDU installation groove (037).

37. The battery module according to any one of claims 20 to 36, wherein the flow channel opening comprises a liquid inlet (015), a liquid discharge port (014), an air inlet (016) and an air outlet (017), and the battery module further comprises: A temperature management module (042) is configured to perform temperature management on a heat exchange medium; An output pipeline (043), two ends of which are respectively connected to the liquid discharge port (014) and the temperature management module (042); An input pipeline (044), both ends of which are respectively connected to the liquid inlet (015) and the temperature management module (042); A liquid discharge solenoid valve (045) configured to control the on / off of the liquid discharge port (014); A liquid inlet solenoid valve (046) configured to control the on-off of the liquid inlet (015); An air intake solenoid valve (047) configured to control the opening and closing of the air intake port (016); An exhaust solenoid valve (048) configured to control the opening and closing of the exhaust port (017); A hydraulic pump configured to drive the heat exchange medium in the input pipeline (044) and the output pipeline (043) to flow; A detection module (93) configured to detect a filling amount of a heat exchange medium in a heat management component; The controller (94) responds to the detection information of the detection module (93) and controls the working states of the liquid discharge solenoid valve (045), the liquid inlet solenoid valve (046), the air intake solenoid valve (047), the exhaust solenoid valve (048) and the hydraulic pump.

38. The battery module according to any one of claims 19 to 37, wherein: A step groove (034) is provided on one side of the base (003) close to the groove end of the BMS installation groove (036), and the step groove (034) is connected to the BMS installation groove (036). A clamping plate (2173) is provided on one end of the side wall of the second bracket (217) (002) close to the groove end of the first installation groove (2171), and the clamping plate (2173) cooperates with the step groove (034).

39. The battery module according to any one of claims 19 to 38, wherein: The base (003) is provided with an internal thread column (312), and the top cover (013) is detachably connected to the internal thread column (312).

40. The battery module according to any one of claims 19 to 39, wherein: There are a plurality of battery cell (018) mounting grooves (035), and the plurality of battery cell mounting grooves (035) are divided into two groups. The BMS mounting groove (036) is located between the two groups of battery cell mounting grooves (035), and the BDU mounting groove (037) is located at one end of the BMS mounting groove (036) and is arranged adjacent to the two groups of battery cell mounting grooves (035).

41. The battery module according to claim 40, wherein: A communication groove (351) is provided between two adjacent battery cell installation grooves (035).

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