CN112864536B - High-voltage battery module connecting device and connecting structure of electric automobile - Google Patents
High-voltage battery module connecting device and connecting structure of electric automobile Download PDFInfo
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- CN112864536B CN112864536B CN202110036788.1A CN202110036788A CN112864536B CN 112864536 B CN112864536 B CN 112864536B CN 202110036788 A CN202110036788 A CN 202110036788A CN 112864536 B CN112864536 B CN 112864536B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a connecting device and a connecting structure of a high-voltage battery module of an electric automobile. The electric automobile high voltage battery module connecting device includes: the device comprises an upper cover plate, a low-voltage connecting module, a high-voltage copper bar connecting module and a lower cover plate; the low-voltage connection module comprises a low-voltage harness assembly and a flexible circuit board assembly; the high-voltage copper bar connecting module comprises a high-voltage copper bar, a copper bar temperature sensor for detecting the temperature of the high-voltage copper bar is arranged on the high-voltage copper bar, and the copper bar temperature sensor is electrically connected with the flexible circuit board assembly. The invention reduces the wiring length of the high-voltage copper bar and the low-voltage wire harness by centralized wiring, avoids the wiring confusion of the high-voltage copper bar and the low-voltage wire harness, increases the space utilization rate of the internal circuit of the power battery, provides a scheme for production automation, reduces the external cost of the high-voltage bus bar and the low-voltage wire harness, optimizes the connection path, and provides a design scheme for modularization and platformization.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a high-voltage battery module connecting device of an electric automobile and a high-voltage battery module connecting structure of the electric automobile.
Background
The electric automobile comprises a plurality of high-voltage electric wires Chi Mozu, and the poles of the battery module are electrically connected through copper bars to provide power for the electric automobile. In order to manage the battery module, a battery management system (Battery Management System, BMS) and a battery shut-off unit (Battery Disconnect Unit, BDU) are provided in the electric vehicle. Wherein, BMS monitors battery module through the inside low pressure control pencil of battery module, and BDU is then connected with the copper bar electricity, control battery disconnection and switch-on high voltage electricity.
However, as shown in fig. 27 and 28, since the electric vehicle includes a plurality of battery modules, each battery module 1' is individually connected to the BMS 3' and the BDU 2', and the circuit thereof is very complicated. In particular, the battery module is connected with the BMS by a low-voltage circuit, and the connection between the battery module pole and the BDU is by a high-voltage copper bar. The battery modules are connected with the BMS respectively, so that the lines are very scattered. The high-voltage copper bar is made of copper, so that the high-voltage copper bar is difficult to fold, wiring in a vehicle is very difficult, and when the length of the copper bar is too long, the high-voltage copper bar is difficult to fix, and the high-voltage copper bar needs to occupy a large space in the vehicle, is easy to wear and bend in the assembly process, and has high quality risks. In addition, as the copper bars are required to be subjected to injection molding protection, the wiring of the copper bars is different from each other in different vehicle types, so that the high-pressure injection molding copper bars are overlong, the die cost is high, and the die opening difficulty is high.
Disclosure of Invention
Based on this, it is necessary to provide an electric vehicle high-voltage battery module connecting device and an electric vehicle high-voltage battery module connecting structure, aiming at the technical problem that the low-voltage circuit and the high-voltage circuit of the battery module in the prior art are difficult to run in the vehicle.
An electric automobile high voltage battery module connecting device, includes: the device comprises an upper device cover plate, a low-voltage connecting module, a high-voltage copper bar connecting module and a lower device cover plate, wherein the upper device cover plate and the lower device cover plate are connected to form a device shell;
the low-voltage connection module comprises a low-voltage wiring harness assembly electrically connected with a low-voltage loop of the battery module and a flexible circuit board assembly electrically connected with a battery management system of the electric automobile;
the high-voltage copper bar connection module comprises a high-voltage copper bar electrically connected with a high-voltage loop of the battery module.
Further, the low voltage harness assembly includes: the low-voltage wire harness and a plurality of low-voltage wire harness branch lines, low-voltage wire harness branch line one end with the low-voltage wire harness is connected, and the other end is followed the device shell stretches out for be connected with battery module's low-voltage circuit electricity.
Further, the flexible circuit board assembly includes: the flexible circuit board is electrically connected with the high-voltage copper bar temperature plug board.
Still further, high-pressure copper bar temperature pinboard includes the temperature pinboard body, temperature pinboard body one end is provided with the butt joint hole, and the other end is provided with the welding hole, the butt joint hole with be provided with the expansion hole between the welding hole, high-pressure copper bar connection module still includes high-pressure copper bar temperature control bus, high-pressure copper bar temperature control bus one end with copper bar temperature sensor electricity is connected, the other end pass behind the butt joint hole with the welding hole welding.
Further, the method further comprises the following steps: the low-voltage connecting module comprises a low-voltage module upper partition plate arranged above the low-voltage connecting module and a low-voltage module lower partition plate arranged below the low-voltage connecting module, wherein the low-voltage connecting module and the low-voltage module upper partition plate are metal plates.
Further, a copper bar temperature sensor for detecting the temperature of the high-voltage copper bar is arranged on the high-voltage copper bar, and the copper bar temperature sensor is electrically connected with the flexible circuit board assembly.
Still further, the high-voltage copper bar includes the external copper bar of high pressure, the external copper bar of high pressure includes the external copper bar of first high pressure and the external copper bar of second high pressure, first high pressure external copper bar with connect high-voltage copper bar electricity through intermediate junction between the external copper bar of second high pressure and connect, intermediate junction high-voltage copper bar includes: the middle straight line is connected with the high-voltage copper bar and/or the middle bending is connected with the high-voltage copper bar, the first high-voltage external copper bar and/or the second high-voltage external copper bar are/is provided with the copper bar temperature sensor, the first high-voltage external copper bars are arranged side by side at one end of the high-voltage copper bar connecting module, the second high-voltage external copper bars are arranged side by side at the other end of the high-voltage copper bar connecting module, and the first high-voltage external copper bars and the second high-voltage external copper bars extend out from the bottom of the lower cover plate of the device.
Further, one or more high-voltage copper bar connecting structures are arranged between the first high-voltage external copper bar and the second high-voltage external copper bar;
the first high-voltage external copper bar is electrically connected with the high-voltage copper bar intermediate connection structure through the intermediate connection high-voltage copper bar;
The two adjacent high-voltage copper bar intermediate connection structures are electrically connected through the intermediate connection high-voltage copper bar;
the second high-voltage external copper bar is electrically connected with the high-voltage copper bar intermediate connection structure through the intermediate connection high-voltage copper bar.
Still further, high-pressure copper bar connection module still includes high-pressure copper bar fixed knot constructs, high-pressure external copper bar with high-pressure copper bar fixed knot constructs one end and is connected, intermediate junction high-pressure copper bar with high-pressure copper bar fixed knot constructs the other end and is connected, copper bar temperature sensor fixes on the high-pressure copper bar fixed knot constructs.
Still further, the high-voltage copper bar connection module further comprises a high-voltage copper bar temperature control bus accommodating device, wherein the temperature monitoring low-voltage wires electrically connected with the copper bar temperature sensor are summarized into a high-voltage copper bar temperature control bus, and are accommodated in the high-voltage copper bar temperature control bus accommodating device.
The invention provides a high-voltage battery module connecting structure of an electric automobile, which comprises the high-voltage battery module connecting device of the electric automobile and a plurality of battery modules, wherein the high-voltage battery module connecting device of the electric automobile is fixed on the battery modules, the low-voltage harness assembly of the low-voltage connecting module of the high-voltage battery module connecting device of the electric automobile is electrically connected with a low-voltage loop of the battery modules, a flexible circuit board assembly of the low-voltage connecting module is electrically connected with a battery management system of the electric automobile, and high-voltage copper bars of the high-voltage copper bar connecting module of the high-voltage battery module connecting device of the electric automobile are respectively electrically connected with the high-voltage loop of the battery modules.
Further, the electric automobile high-voltage battery module connecting device is provided with a plurality of channels above the battery modules or in the middle of the battery modules.
Further, the high-voltage copper bar of the high-voltage copper bar connection module is electrically connected with a battery cutting unit of the electric automobile.
According to the high-voltage battery module connecting device of the electric automobile, the low-voltage connecting module and the high-voltage copper bar connecting module are accommodated in the same device, so that a low-voltage loop and a high-voltage loop of the battery module can be centralized in the high-voltage battery module connecting device of the electric automobile for connection, wiring lengths of the high-voltage copper bar and the low-voltage wire harness are reduced through centralized wiring, and wiring confusion of the high-voltage copper bar and the low-voltage wire harness is avoided.
Drawings
Fig. 1 is a structural exploded view of a connection device for a high-voltage battery module of an electric vehicle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a connection structure of a high-voltage battery module of an electric vehicle according to an embodiment of the invention;
fig. 3 is a schematic diagram illustrating connection between a lower cover plate and a battery module according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of the upper cover plate and the partition plate of the device according to an embodiment of the invention;
FIG. 5 is an exploded view of a low pressure connection module and upper and lower bulkheads according to one embodiment of the present invention;
FIG. 6 is a schematic diagram of a low voltage harness assembly according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a flexible circuit board assembly according to an embodiment of the invention;
FIG. 8 is a diagram showing an assembly of a first connecting module and upper and lower partition plates according to an embodiment of the present invention;
FIG. 9 is a schematic view of a copper bar fastener according to an embodiment of the present invention;
FIG. 10 is a schematic view of a lower cover plate of a high-voltage module according to an embodiment of the invention;
FIG. 11 is a schematic view of a high voltage copper bar connection module according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a high voltage copper bar temperature control bus containment device according to an embodiment of the present invention;
FIG. 13 is another schematic view of a high voltage copper bar temperature control bus containment device according to an embodiment of the present invention;
FIG. 14 is a schematic view illustrating the connection of a fixing plate to a copper bar temperature sensor according to an embodiment of the present invention;
FIG. 15 is a schematic view illustrating another angle between a fixing plate and a copper bar temperature sensor according to an embodiment of the present invention;
FIG. 16 is an enlarged schematic view of a high voltage copper bar temperature control bus containment device according to an embodiment of the present invention;
FIG. 17 is a schematic view of an intermediate straight connection high voltage copper bar according to an embodiment of the present invention;
FIG. 18 is a schematic diagram illustrating a copper bar connection according to an embodiment of the present invention;
FIG. 19 is a schematic view showing the connection of copper bars to copper bar fasteners according to an embodiment of the present invention;
FIG. 20 is a schematic view of a high voltage copper bar temperature pinboard according to an embodiment of the present invention;
FIG. 21 is a side view of the lower cover plate of an embodiment of the device of the present invention;
FIG. 22 is a top view of a lower cover plate of an embodiment of the device of the present invention;
FIG. 23 is a front view of a lower cover plate of an embodiment of the device of the present invention;
fig. 24 is a schematic combination diagram of a connection device for a high-voltage battery module of an electric vehicle according to an embodiment of the invention;
fig. 25 is a schematic connection diagram of a connection device for a high-voltage battery module of an electric vehicle and battery modules arranged on both sides of the positive and negative poles of a single module according to an embodiment of the invention;
fig. 26 is a schematic connection diagram of a battery module with a single module positive and negative electrode and a high-voltage battery module connection device for an electric vehicle according to an embodiment of the invention;
fig. 27 is a schematic connection diagram of battery modules arranged at both sides of the anode and cathode of a single module according to the prior art;
fig. 28 is a schematic connection diagram of a battery module in which the positive and negative electrodes of a related art single module are arranged on the same side.
Reference numerals
1', a battery pack; 2', BMS;3', BDU;1-1, a high-voltage battery module connecting device of an electric automobile; 1-2, a low-voltage control wire harness assembly in the battery module; 1-3, a battery module low-voltage wire harness; 1-4, high-voltage copper bars; 1-5, a lower shell of the battery module assembly; 1-6, a battery management system; 1-7, a battery cut-off unit; 1. an upper cover plate is arranged; 11. reinforcing ribs; 2. a partition plate; 3. a copper bar fastener; 31. fastening a bolt insulating sleeve; 32. a nut; 33. a fastening bolt; 4. a low pressure module upper partition; 41. a longitudinal separator gap; 42. a transverse separator notch; 5. a low voltage connection module; 51. a low voltage harness; 52. a first low voltage harness connector; 53. a first low voltage harness securing structure; 54. a second low voltage harness plug; 55. a low voltage harness branch line; 56. a second low voltage harness securing structure; 57. a first flexible circuit board connector; 58. a flexible circuit board; 59. a second flexible circuit board connector; 510. high-voltage copper bar temperature plugboard; 5101. a temperature plug board body; 5102. a butt joint hole; 5103. expanding the hole; 5104. welding holes; 5-1, a low voltage harness assembly; 5-2 a flexible circuit board assembly; 6. a low pressure module lower partition; 7. a high-voltage copper bar connecting module; 71. the first high-voltage external copper bar; 711. externally connecting a copper bar through hole; 72. the second high-voltage external copper bar; 73. the middle part is bent and connected with a high-voltage copper bar; 74. a high-voltage copper bar fixing structure; 75. a high-voltage copper bar temperature control bus accommodating device; 751. a housing device frame; 7511. a frame groove; 752. temperature monitoring low voltage line; 753. a housing device floor; 754. a temperature monitoring low-voltage bus interface; 755. a fixing plate; 756. a copper bar temperature sensor; 757. a fixing plate through hole; 758. a fixing plate through hole; 759. copper bar temperature sensor connecting terminals; 76. a high-voltage copper bar temperature control bus; 77. the middle straight line is connected with the high-voltage copper bar; 771. a straight copper bar body; 772. a straight copper bar through hole; 78. a high-voltage copper bar middle connecting structure; 79. a high-voltage copper bar middle connecting structure; 8. a high-voltage module lower cover plate; 81. a first high voltage module fixing hole; 82. a second high voltage module fixing hole; 83. a third high voltage module fixing hole; 84. a fourth high voltage module fixing hole; 9. a lower cover plate of the device; 91. an upper shell and a lower shell interference fit structure; 92. a rectangular hole; 93. a rectangular hole; 94. a fixing groove; 95. a lower cover plate side plate through hole; 10. and a battery module.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
Example 1
Fig. 1 shows a high-voltage battery module connecting device 1-1 for an electric vehicle according to an embodiment of the invention, which includes: the device comprises an upper device cover plate 1, a low-voltage connecting module 5, a high-voltage copper bar connecting module 7 and a lower device cover plate 9, wherein the upper device cover plate 1 and the lower device cover plate 9 are connected to form a device shell, and the low-voltage connecting module 5 and the high-voltage copper bar connecting module 7 are accommodated in the device shell;
the low-voltage connection module 5 comprises a low-voltage wiring harness assembly 5-1 electrically connected with a low-voltage loop of the battery module 10 and a flexible circuit board assembly 5-2 electrically connected with a battery management system of the electric automobile;
the high-voltage copper bar connection module 7 includes a high-voltage copper bar electrically connected with a high-voltage circuit of the battery module 10.
Specifically, the high-voltage battery module connecting device of the electric automobile is fixed on the battery module, and can be fixed by arranging a mounting point on the lower cover plate 9 of the device and matching with the fixing point of the injection molding cover of the upper shell of the battery module. The device upper cover plate 1 and the device lower cover plate 9 are connected to form a device shell, and the low-voltage connecting module 5 and the high-voltage copper bar connecting module 7 are accommodated in the device shell.
The low-voltage connection module 5 is characterized by comprising a low-voltage wiring harness assembly 5-1 and a flexible circuit board assembly 5-2. The low voltage harness assembly 5-1 is used for electrical connection with a low voltage circuit of the battery module 10. The flexible circuit board assembly 5-2 is used for electrical connection with the BMS 1-6. The low-voltage circuit of the battery module 10 includes: the module collection loop, the voltage monitoring loop of the BDU, the connection loop with the whole vehicle end and the like.
The low voltage harness assembly 5-1 may be secured by a first low voltage harness securing structure 53, a second low voltage harness securing structure 56. The low voltage harness assembly 5-1 extends out of the device housing and is electrically connected to a corresponding low voltage circuit. The battery management system of the electric automobile is connected into the device shell through the wire harness and is electrically connected with the flexible circuit board assembly 5-2.
The high-voltage copper bar connection module 7 is used for being electrically connected with a high-voltage loop of the battery module 10, and the high-voltage copper bar connection module 7 can be fixed on the device lower cover plate 9 through the copper bar fastener 3. Meanwhile, the high-voltage copper bar connecting module 7 can be electrically connected with the BDUs 1-7. The high voltage copper bars of the high voltage copper bar connection module 7 may protrude from the device housing and be electrically connected to the high voltage circuit. Or the high-voltage loop is led into the device shell through the copper bar and is electrically connected with the high-voltage copper bar of the high-voltage copper bar connecting module 7.
The connection path between the high-voltage battery module connecting device of the electric automobile and the battery module is as follows, and arrow-indicates connection:
1. module acquisition loop → flexible circuit board assembly → BMS: the temperature of the acquisition module and the electric signal are transmitted to the BMS for monitoring and controlling;
bms→flexible circuit board assembly→bdu: monitoring high-voltage;
the voltage monitoring return circuit of BDU passes through the low pressure line and is connected to flexible circuit board assembly, is connected with BMS again, and this scheme combines the spatial layout of BMS and BDU, if BMS and BDU homonymy, then can directly link.
3. Whole car controller (Vehicle Control Module, VCM) →car body harness→front and rear drive press connector→flexible circuit assembly→BMS: the connecting path is connected with a whole vehicle end loop, and a whole vehicle end and an in-package control signal are obtained from a whole vehicle controller, so that low-voltage power supply and low-voltage grounding are realized;
wherein, the low voltage power supply of BMS is from whole car access, and low voltage ground is at battery package design ground point alone.
4. Battery module end- & gthigh voltage copper bar connection module- & gtBDU: the modules are connected in series to realize a series circuit;
5. high-voltage copper bar connection module→BDU: the BDUs are connected in parallel inside, so that four-wheel drive high-voltage output is realized.
The implementation mode of the parallel connection inside the BDU is as follows: the positive and negative poles of one side of the BDU are connected with the positive and negative poles of the other side of the BDU, the positive and negative poles of the other side of the BDU are connected with copper bars in parallel, one group of copper bars are connected with the precursor high-voltage connector, the other group of copper bars are connected with the rear-drive high-voltage connector, and four-drive output is achieved.
According to the high-voltage battery module connecting device of the electric automobile, the low-voltage connecting module and the high-voltage copper bar connecting module are accommodated in the same device, so that a low-voltage loop and a high-voltage loop of the battery module can be centralized in the high-voltage battery module connecting device of the electric automobile for connection, wiring lengths of the high-voltage copper bar and the low-voltage wire harness are reduced through centralized wiring, wiring confusion of the high-voltage copper bar and the low-voltage wire harness is avoided, space utilization rate of an internal circuit of a power battery is increased, a scheme is provided for production automation, the outer packaging cost of the high-voltage bus bar and the low-voltage wire harness is reduced, a connecting path is optimized, and a design scheme is provided for modularization and platformization.
Example two
As shown in fig. 1 to 24, a high-voltage battery module connecting device 1-1 for an electric vehicle according to the present invention includes: the device comprises an upper device cover plate 1, a low-voltage connecting module 5, a high-voltage copper bar connecting module 7, a lower-voltage module upper partition plate 4 arranged above the low-voltage connecting module 5, a lower low-voltage module lower partition plate 6 arranged below the low-voltage connecting module 5 and a lower device cover plate 9, wherein the upper device cover plate 1 and the lower device cover plate 9 are connected to form a device shell, the low-voltage connecting module 5 and the high-voltage copper bar connecting module 7 are accommodated in the device shell, and the lower-voltage connecting module 5 and the lower-voltage module upper partition plate 4 are metal plates;
The low-voltage connection module 5 comprises a low-voltage wiring harness assembly 5-1 electrically connected with a low-voltage loop of the battery module 10 and a flexible circuit board assembly 5-2 electrically connected with a battery management system of the electric automobile;
the high-voltage copper bar connection module 7 comprises a high-voltage copper bar electrically connected with a high-voltage loop of the battery module 10, a copper bar temperature sensor 756 for detecting the temperature of the high-voltage copper bar is arranged on the high-voltage copper bar, and the copper bar temperature sensor 756 is electrically connected with the flexible circuit board assembly 5-2;
the low voltage harness assembly 5-1 includes: a low voltage harness 51 and a plurality of low voltage harness branch lines 55, one end of the low voltage harness branch line 55 being connected to the low voltage harness 51, the other end extending from the device housing for electrical connection with a low voltage circuit of the battery module 10;
the flexible circuit board assembly 5-2 includes: the flexible circuit board 58 is used for being electrically connected with an electric automobile battery management system, and the high-voltage copper bar temperature plug board 510, the flexible circuit board 58 is electrically connected with the high-voltage copper bar temperature plug board 510, the high-voltage copper bar temperature plug board 510 comprises a temperature plug board body 5101, one end of the temperature plug board body 5101 is provided with a butt joint hole 5102, the other end of the temperature plug board body is provided with a welding hole 5104, an expansion hole 5103 is arranged between the butt joint hole 5102 and the welding hole 5104, the high-voltage copper bar connection module 7 further comprises a high-voltage copper bar temperature control bus 76, one end of the high-voltage copper bar temperature control bus 76 is electrically connected with the copper bar temperature sensor 756, and the other end of the high-voltage copper bar temperature control bus passes through the butt joint hole 5102 and then is welded with the welding hole 5104;
The high-voltage copper bar comprises a high-voltage external copper bar, the high-voltage external copper bar comprises a first high-voltage external copper bar 71 and a second high-voltage external copper bar 72, the first high-voltage external copper bar 71 is electrically connected with the second high-voltage external copper bar 72 through an intermediate connection high-voltage copper bar, and the intermediate connection high-voltage copper bar comprises: the middle straight line connection high-voltage copper bars 77 and/or the middle bending connection high-voltage copper bars 73, the first high-voltage external copper bars 71 and/or the second high-voltage external copper bars 72 are provided with copper bar temperature sensors 756, a plurality of the first high-voltage external copper bars 71 are arranged at one end of the high-voltage copper bar connection module 7 side by side, a plurality of the second high-voltage external copper bars 72 are arranged at the other end of the high-voltage copper bar connection module 7 side by side, the first high-voltage external copper bars 71 and the second high-voltage external copper bars 72 extend out from the bottom of the lower cover plate 9 of the device, and one or more high-voltage copper bar middle connection structures are arranged between the first high-voltage external copper bars 71 and the second high-voltage external copper bars 72;
the first high-voltage external copper bar 71 is electrically connected with the intermediate connection structure of the high-voltage copper bar through the intermediate connection high-voltage copper bar;
The two adjacent high-voltage copper bar intermediate connection structures are electrically connected through the intermediate connection high-voltage copper bar;
the second high-voltage external copper bar 72 is electrically connected with the intermediate connection structure of the high-voltage copper bar through the intermediate connection high-voltage copper bar;
the high-voltage copper bar connecting module 7 further comprises a high-voltage copper bar fixing structure 74, the high-voltage external copper bar is connected with one end of the high-voltage copper bar fixing structure 74, the middle connecting high-voltage copper bar is connected with the other end of the high-voltage copper bar fixing structure 74, and the copper bar temperature sensor 756 is fixed on the high-voltage copper bar fixing structure 74;
the high-voltage copper bar connection module 7 further comprises a high-voltage copper bar temperature control bus accommodating device 75, and a temperature monitoring low-voltage line 752 electrically connected with the copper bar temperature sensor 756 is summarized into a high-voltage copper bar temperature control bus 76 and is accommodated in the high-voltage copper bar temperature control bus accommodating device 75.
Specifically, as shown in fig. 4, a reinforcing rib 11 may be provided on the device upper cover plate 1 to increase the strength of the device upper cover plate 1. A partition plate 2 can be arranged below the upper cover plate 1 of the device. A high-voltage module lower cover plate 8 is arranged below the high-voltage copper bar connecting module 7. The copper bar of the high-voltage copper bar connecting module 7 is fixedly connected with the lower cover plate 8 of the high-voltage module. The low-voltage connection module 5 and the high-voltage copper bar connection module 7 are placed side by side on the device lower cover plate 9.
As shown in fig. 5, the low voltage connection module 5 includes a low voltage harness assembly 5-1 and a flexible circuit board assembly 5-2.
As shown in fig. 6, the low voltage harness assembly 5-1 includes: a low-voltage harness 51, wherein a first low-voltage harness connector 52 and a second low-voltage harness connector 54 are arranged at two ends of the low-voltage harness 51; the low-voltage wire harness 51 is fixed by a first low-voltage wire harness fixing structure 53 and a second low-voltage wire harness fixing structure 56; the low-voltage harness 51 is electrically connected to the low-voltage harness branch line 55, and the low-voltage harness branch line 55 extends out of the rectangular holes 92, 93 of the device lower cover 9 to interface with the low-voltage circuit of the battery module 10.
As shown in fig. 7, the flexible circuit board assembly 5-2 includes: the flexible circuit board 58, the flexible circuit board 58 both ends set up first flexible circuit board plug 57, second flexible circuit board plug 59. A high voltage copper bar temperature plug board 510 is provided on one side of the flexible circuit board 58. The first and second flexible circuit board connectors 57 and 59 are connected to control signals of the BMS.
As shown in fig. 8, the low voltage harness assembly 5-1 and the flexible circuit board assembly 5-2 are placed up and down, and then are covered by the low voltage module upper partition board 4 and the low voltage module lower partition board 6, and the low voltage module upper partition board 4 and the low voltage module lower partition board 6 are metal plates, so that electromagnetic isolation is realized. The upper partition board 4 of the low-voltage module is provided with a longitudinal partition board notch 41 and a transverse partition board notch 42, so that wiring is facilitated.
As shown in fig. 20, the high voltage copper bar temperature plug board 510 includes: the temperature plug board body 5101, both ends set up butt joint hole 5102 and welding hole 5104 respectively, set up a plurality of expansion holes 5103 along the extending direction of temperature plug board body 5101 between butt joint hole 5102 and the welding hole 5104. And a high-voltage copper bar temperature control bus 76 of the high-voltage copper bar connection module 7, wherein one end of the high-voltage copper bar temperature control bus 76 is electrically connected with the copper bar temperature sensor 756, and the other end passes through the butt joint hole 5102 and then is welded with the welding hole 5104. Therefore, the high-voltage copper bar temperature control bus 76 is placed along the extending direction of the temperature plug board body 5101, when the flexible circuit board=needs to be added, the low-voltage wire can be led out from the newly added flexible circuit board to be inserted into the expansion hole 5103, and is directly electrically connected with the high-voltage copper bar temperature control bus 76, so that expansion is facilitated.
As shown in fig. 11, the high-voltage copper bar connection module 7 includes a high-voltage external copper bar, the high-voltage external copper bar includes a first high-voltage external copper bar 71 and a second high-voltage external copper bar 72, and a plurality of high-voltage copper bar intermediate connection structures 78, 79 are disposed between the first high-voltage external copper bar 71 and the second high-voltage external copper bar 72, wherein:
the first high-voltage external copper bar 71 is electrically connected with the intermediate connection structure of the high-voltage copper bar through the intermediate connection high-voltage copper bar;
The two adjacent high-voltage copper bar intermediate connection structures are electrically connected through the intermediate connection high-voltage copper bar;
the second high-voltage external copper bar 72 is electrically connected with the intermediate connection structure of the high-voltage copper bar through the intermediate connection high-voltage copper bar.
Intermediate connection high voltage copper bar includes: the middle straight line is connected with the high-voltage copper bar 77 and the middle bending is connected with the high-voltage copper bar 73. For example: the first high-voltage external copper bar 71 is electrically connected with the high-voltage copper bar 77 through an intermediate straight line connection, the high-voltage copper bar 73 is electrically connected with the high-voltage copper bar 79 through an intermediate bending connection between the high-voltage copper bar intermediate connection 78 and the high-voltage copper bar intermediate connection 79, and the high-voltage copper bar and the intermediate straight line connection high-voltage copper bar are electrically connected with the high-voltage copper bar 79 and the second high-voltage external copper bar 72 through an intermediate bending connection.
In the embodiment, the lengths of the copper bars are segmented, and the length of each segment is preferably smaller than 300 mm, so that the problems that the copper bars are easy to wear and bend in the assembly process due to overlong copper bars and the quality risk is high are avoided. Meanwhile, because the structure of the copper bar is fixed, the copper bar can be uniformly opened for injection molding, and the copper bar is independently subjected to injection molding protection, so that the injection molding cost is saved.
The first high-voltage external copper bar 71 and the second high-voltage external copper bar 72 are bent copper bars, so that space is saved, and the first high-voltage external copper bar and the second high-voltage external copper bar penetrate out of the fixing groove 94 at the bottom of the lower cover plate 9 of the device and are electrically connected with a high-voltage loop and a BDU of the battery module 10.
Intermediate connection high voltage copper bar includes: the middle straight line connecting high-voltage copper bar 77 and the middle bending connecting high-voltage copper bar 73 are straight copper bars, and the middle bending connecting high-voltage copper bar 73 comprises three bending sections forming a right angle. The middle straight connection high-voltage copper bar 77 or the middle bending connection high-voltage copper bar 73 is selected to be connected according to the requirement. For example, if the high-voltage external copper bar is in the same row as the intermediate connection structure of the high-voltage copper bar to be connected, the intermediate straight connection high-voltage copper bar 77 may be selected for connection, and if the high-voltage external copper bar is not in the same row as the intermediate connection structure of the high-voltage copper bar to be connected, the intermediate bent connection high-voltage copper bar 73 may be selected for connection.
The high-voltage external copper bar is connected with the intermediate connection high-voltage copper bar through a high-voltage copper bar fixing structure 74, the high-voltage external copper bar is connected with one end of the high-voltage copper bar fixing structure 74, the intermediate connection high-voltage copper bar is connected with the other end of the high-voltage copper bar fixing structure 74, and the copper bar temperature sensor 756 is fixed on the high-voltage copper bar fixing structure 74.
The high voltage copper bar connection module 7 further comprises a high voltage copper bar temperature controlled bus receiving means 75.
As shown in fig. 12 to 15, the high voltage copper bar fixing structure 74 includes a fixing plate 755, the bottom of the fixing plate 755 is connected with a copper bar temperature sensor 756, the copper bar temperature sensor 756 monitors the temperature of the copper bar, and is electrically connected with a temperature monitoring low voltage line 752 through a copper bar temperature sensor connection terminal 759, and outputs a temperature signal. The temperature monitoring low-voltage wires 752 are inserted into the accommodating device frame 751 from the frame grooves 751 of the accommodating device frame 751 of the high-voltage copper bar temperature control bus accommodating device 75, and the plurality of temperature monitoring low-voltage wires 752 are integrated into the high-voltage copper bar temperature control bus 76. The high voltage copper bar temperature control bus 76 passes out of the temperature monitoring low voltage bus interface 754 and through the docking aperture 5102 of fig. 20 and then is soldered to the soldering aperture 5104.
As shown in fig. 9, the copper bar fastener 3 includes a fastening bolt 33, a nut 32, and a fastening bolt insulating sleeve 31 fitted over the fastening bolt 33. As shown in fig. 10, the high-voltage module lower cover plate 8 is provided with a first high-voltage module fixing hole 81, a second high-voltage module fixing hole 82, a third high-voltage module fixing hole 83, and a fourth high-voltage module fixing hole 84.
Fig. 17 shows a middle straight connection high-voltage copper bar 77, which comprises a straight copper bar body 771, and two ends of the straight copper bar body are provided with straight copper bar through holes 772.
Taking the connection of the first high-voltage external copper bar 71 and the middle straight connection high-voltage copper bar 77 as an example, as shown in fig. 18 and 19, the fastening bolts 33 are sequentially inserted into the straight copper bar through holes 772, the fixing plate through holes 758 of the fixing plate 755, and the copper bar temperature sensors 756, and then fixed to the high-voltage module fixing holes of the high-voltage module lower cover plate 8. And is fixed by a nut 32, and then a fastening bolt insulating sleeve 31 is sleeved. The other end of the fixing plate 755, the fastening bolt 33 is sequentially inserted into the external copper bar through hole 711 of the first high voltage external copper bar 71 and the fixing plate through hole 757 of the fixing plate 755, and then fixed to the high voltage module fixing hole of the high voltage module lower cover 8. And is fixed by a nut 32, and then a fastening bolt insulating sleeve 31 is sleeved.
As shown in fig. 21 to 24, the upper and lower shell interference fit structures 91 are provided on the lower cover plate side plates on both sides of the lower cover plate 9 of the device, so as to facilitate the assembly with the upper cover plate 1 of the device. The lower cover side plates are also provided with rectangular holes 92, 93 of various specifications, which facilitate the extension of the low voltage harness branch line 55. And meanwhile, the lower cover plate side plate through holes 95 are formed, so that the upper cover plate 1 of the device is conveniently opened.
According to the electric automobile high-voltage battery module connecting device, the fixing structure can be used for sharing the wire harness and the copper bars, and the number of fixing points is reduced. The laminated busbar is externally connected, and the internal copper bar does not need injection protection. The high-low voltage structure circuit is integrally assembled, the copper bar cannot be bent, and no quality risk exists in the operation process. The fixed structure is shared, and the expansibility is good, so that the modular development can be performed.
Example III
The invention relates to a connecting structure of a high-voltage battery module of an electric automobile, which comprises a connecting device 1-1 of the high-voltage battery module of the electric automobile and a plurality of battery modules 10;
the electric automobile high voltage battery module connecting device 1-1 includes: the device comprises an upper device cover plate 1, a low-voltage connecting module 5, a high-voltage copper bar connecting module 7 and a lower device cover plate 9, wherein the upper device cover plate 1 and the lower device cover plate 9 are connected to form a device shell, and the low-voltage connecting module 5 and the high-voltage copper bar connecting module 7 are accommodated in the device shell;
the low-voltage connection module 5 comprises a low-voltage wiring harness assembly 5-1 electrically connected with a low-voltage loop of the battery module 10 and a flexible circuit board assembly 5-2 electrically connected with a battery management system of the electric automobile;
The high-voltage copper bar connection module 7 comprises a high-voltage copper bar electrically connected with a high-voltage loop of the battery module 10, a copper bar temperature sensor 756 for detecting the temperature of the high-voltage copper bar is arranged on the high-voltage copper bar, and the copper bar temperature sensor 756 is electrically connected with the flexible circuit board assembly 5-2;
the low-voltage harness assembly 5-1 of the low-voltage connection module 5 of the electric vehicle high-voltage battery module connection device 1-1 is electrically connected with the low-voltage loop of the battery module 10, the flexible circuit board assembly 5-2 of the low-voltage connection module 5 is electrically connected with the battery management system of the electric vehicle, and the high-voltage copper bars of the high-voltage copper bar connection module 7 of the electric vehicle high-voltage battery module connection device 1-1 are respectively electrically connected with the high-voltage loop of the battery module 10.
Specifically, as shown in fig. 2 and 3, the high-voltage battery module connecting device 1-1 for an electric vehicle is provided on the battery module 10, and may be fixed by various conventional fixing methods. Such as welding, etc. The low-voltage harness assembly 5-1 of the low-voltage connection module 5 of the electric vehicle high-voltage battery module connection device 1-1 is electrically connected with a low-voltage loop of the battery module 10, the flexible circuit board assembly 5-2 of the low-voltage connection module 5 is electrically connected with a battery management system of the electric vehicle, and high-voltage copper bars of the high-voltage copper bar connection module 7 of the electric vehicle high-voltage battery module connection device 1-1 are respectively electrically connected with the high-voltage loop of the battery module 10.
Wherein the battery module 10 is placed on the battery module assembly lower case 1-5. The low-voltage control wire harness assembly 1-2 in the battery module is electrically connected with the flexible circuit board assembly 5-2, the low-voltage wire harness 1-3 of the battery module is electrically connected with the low-voltage wire harness assembly 5-1, and the high-voltage copper bar 1-4 is a copper bar extending out of the high-voltage copper bar connecting module 7 and is electrically connected with a high-voltage loop of the battery module 10.
According to the high-voltage battery module connecting device of the electric automobile, the low-voltage connecting module and the high-voltage copper bar connecting module are accommodated in the same device, so that a low-voltage loop and a high-voltage loop of the battery module can be centralized in the high-voltage battery module connecting device of the electric automobile for connection, wiring lengths of the high-voltage copper bar and the low-voltage wire harness are reduced through centralized wiring, wiring confusion of the high-voltage copper bar and the low-voltage wire harness is avoided, space utilization rate of an internal circuit of a power battery is increased, a scheme is provided for production automation, the outer packaging cost of the high-voltage bus bar and the low-voltage wire harness is reduced, a connecting path is optimized, and a design scheme is provided for modularization and platformization.
Example IV
The invention relates to a connecting structure of a high-voltage battery module of an electric automobile, which comprises a connecting device 1-1 of the high-voltage battery module of the electric automobile and a plurality of battery modules 10;
The electric automobile high voltage battery module connecting device 1-1 includes: the device comprises an upper device cover plate 1, a low-voltage connecting module 5, a high-voltage copper bar connecting module 7, a lower-voltage module upper partition plate 4 arranged above the low-voltage connecting module 5, a lower low-voltage module lower partition plate 6 arranged below the low-voltage connecting module 5 and a lower device cover plate 9, wherein the upper device cover plate 1 and the lower device cover plate 9 are connected to form a device shell, the low-voltage connecting module 5 and the high-voltage copper bar connecting module 7 are accommodated in the device shell, and the lower-voltage connecting module 5 and the lower-voltage module upper partition plate 4 are metal plates;
the low-voltage connection module 5 comprises a low-voltage wiring harness assembly 5-1 electrically connected with a low-voltage loop of the battery module 10 and a flexible circuit board assembly 5-2 electrically connected with a battery management system of the electric automobile;
the high-voltage copper bar connection module 7 comprises a high-voltage copper bar electrically connected with a high-voltage loop of the battery module 10, a copper bar temperature sensor 756 for detecting the temperature of the high-voltage copper bar is arranged on the high-voltage copper bar, and the copper bar temperature sensor 756 is electrically connected with the flexible circuit board assembly 5-2;
the low voltage harness assembly 5-1 includes: a low voltage harness 51 and a plurality of low voltage harness branch lines 55, one end of the low voltage harness branch line 55 being connected to the low voltage harness 51, the other end extending from the device housing for electrical connection with a low voltage circuit of the battery module 10;
The flexible circuit board assembly 5-2 includes: the flexible circuit board 58 is used for being electrically connected with an electric automobile battery management system, and the high-voltage copper bar temperature plug board 510, the flexible circuit board 58 is electrically connected with the high-voltage copper bar temperature plug board 510, the high-voltage copper bar temperature plug board 510 comprises a temperature plug board body 5101, one end of the temperature plug board body 5101 is provided with a butt joint hole 5102, the other end of the temperature plug board body is provided with a welding hole 5104, an expansion hole 5103 is arranged between the butt joint hole 5102 and the welding hole 5104, the high-voltage copper bar connection module 7 further comprises a high-voltage copper bar temperature control bus 76, one end of the high-voltage copper bar temperature control bus 76 is electrically connected with the copper bar temperature sensor 756, and the other end of the high-voltage copper bar temperature control bus passes through the butt joint hole 5102 and then is welded with the welding hole 5104;
the high-voltage copper bar comprises a high-voltage external copper bar, the high-voltage external copper bar comprises a first high-voltage external copper bar 71 and a second high-voltage external copper bar 72, the first high-voltage external copper bar 71 is electrically connected with the second high-voltage external copper bar 72 through an intermediate connection high-voltage copper bar, and the intermediate connection high-voltage copper bar comprises: the middle straight line connection high-voltage copper bars 77 and/or the middle bending connection high-voltage copper bars 73, the first high-voltage external copper bars 71 and/or the second high-voltage external copper bars 72 are provided with copper bar temperature sensors 756, a plurality of the first high-voltage external copper bars 71 are arranged at one end of the high-voltage copper bar connection module 7 side by side, a plurality of the second high-voltage external copper bars 72 are arranged at the other end of the high-voltage copper bar connection module 7 side by side, the first high-voltage external copper bars 71 and the second high-voltage external copper bars 72 extend out from the bottom of the lower cover plate 9 of the device, and one or more high-voltage copper bar middle connection structures are arranged between the first high-voltage external copper bars 71 and the second high-voltage external copper bars 72;
The first high-voltage external copper bar 71 is electrically connected with the intermediate connection structure of the high-voltage copper bar through the intermediate connection high-voltage copper bar;
the two adjacent high-voltage copper bar intermediate connection structures are electrically connected through the intermediate connection high-voltage copper bar;
the second high-voltage external copper bar 72 is electrically connected with the intermediate connection structure of the high-voltage copper bar through the intermediate connection high-voltage copper bar;
the high-voltage copper bar connecting module 7 further comprises a high-voltage copper bar fixing structure 74, the high-voltage external copper bar is connected with one end of the high-voltage copper bar fixing structure 74, the middle connecting high-voltage copper bar is connected with the other end of the high-voltage copper bar fixing structure 74, and the copper bar temperature sensor 756 is fixed on the high-voltage copper bar fixing structure 74;
the high-voltage copper bar connecting module 7 further comprises a high-voltage copper bar temperature control bus accommodating device 75, and a temperature monitoring low-voltage line 752 electrically connected with the copper bar temperature sensor 756 is summarized into a high-voltage copper bar temperature control bus 76 and is accommodated in the high-voltage copper bar temperature control bus accommodating device 75;
the electric automobile high-voltage battery module connecting device 1-1 is provided with a plurality of channels above the battery modules 10 or in the middle of the battery modules 10;
The low-voltage harness assembly 5-1 of the low-voltage connection module 5 of the electric vehicle high-voltage battery module connection device 1-1 is electrically connected with a low-voltage loop of the battery module 10, the flexible circuit board assembly 5-2 of the low-voltage connection module 5 is electrically connected with the battery management system 1-6 of the electric vehicle, the high-voltage copper bars of the high-voltage copper bar connection module 7 of the electric vehicle high-voltage battery module connection device 1-1 are respectively electrically connected with the high-voltage loop of the battery module 10, and the high-voltage copper bars of the high-voltage copper bar connection module 7 are also electrically connected with the battery cutting-off unit 1-7 of the electric vehicle.
Specifically, the high-voltage battery module connecting device 1-1 for an electric vehicle is disposed inside a high-voltage battery pack, and is generally disposed directly above the battery module 10 or in a middle passage, not in both side passages, in consideration of design factors such as space, structure, safety, etc. of the whole pack.
The low-voltage circuit inside the battery pack is connected with: (1) the battery module signals, (2) the BMS control signals and (3) the output signals, wherein the low-voltage circuits in the module circuits realize the optimal path connection of the battery module signals and the BMS control signals, the battery module signals are all connected into the high-voltage battery module connecting device 1-1 of the electric automobile, the battery module signals are connected to the BMS control signals through the high-voltage battery module connecting device 1-1 of the electric automobile and are simultaneously connected to the front high-voltage output port and the rear high-voltage output port, the symmetrical arrangement is preferentially considered in the position arrangement process, and the shortest path of the low-voltage connection is realized.
High-voltage circuit connection inside the battery pack: (1) the battery modules are connected in series, (2) the BDU is connected in series with the battery modules, (3) the front and rear drives are connected in series with the BDU, and (4) the front and rear drives are connected in parallel with the high-voltage output; the high-voltage circuit inside the high-voltage battery module connecting device 1-1 of the electric automobile realizes the shortest path between the battery module and the BDU in series connection and the shortest path between the front driver and the rear driver and the high-voltage output in parallel connection.
Because the high-voltage battery module connecting device 1-1 centralized circuit of the electric automobile is adopted, the electric connection integration is higher, and the total length of copper bars and wire harnesses is short no matter the battery modules are arranged on the positive side and the negative side of the single module as shown in fig. 25 or the battery modules are arranged on the same side as the positive side and the negative side of the single module as shown in fig. 26.
According to the embodiment, the wire harness trunk line is omitted, the transverse (X-direction) and longitudinal (Y-direction) space is saved, the structural constraint in the height direction (Z-direction) is reduced, the Z-direction space is reduced, the high-voltage wire harness and the low-voltage copper bar are subjected to structural design, and the electric connection is integrated through internal circuit optimization. The total length of the copper bars and the wire harnesses is reduced, and the die parts and the fixing points are reduced, so that the whole package is lighter. The fixed points of the structural modules are shared, so that the number of specially set fixed supports and die fixed structures is reduced. The copper bar is segmented in length, and injection molding protection is not required to be carried out on the copper bar independently in the structural circuit.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (11)
1. An electric automobile high voltage battery module connecting device (1-1), characterized by comprising: the device comprises an upper device cover plate (1), a low-voltage connecting module (5), a high-voltage copper bar connecting module (7) and a lower device cover plate (9), wherein the upper device cover plate (1) and the lower device cover plate (9) are connected to form a device shell, and the low-voltage connecting module (5) and the high-voltage copper bar connecting module (7) are accommodated in the device shell;
the low-voltage connection module (5) comprises a low-voltage wiring harness assembly (5-1) electrically connected with a low-voltage loop of the battery module (10) and a flexible circuit board assembly (5-2) electrically connected with a battery management system of the electric automobile;
the high-voltage copper bar connecting module (7) comprises a high-voltage copper bar electrically connected with a high-voltage loop of the battery module (10);
The high-voltage copper bar is provided with a copper bar temperature sensor (756) for detecting the temperature of the high-voltage copper bar, and the copper bar temperature sensor (756) is electrically connected with the flexible circuit board assembly (5-2);
the high-voltage copper bar comprises a high-voltage external copper bar, the high-voltage external copper bar comprises a first high-voltage external copper bar (71) and a second high-voltage external copper bar (72), the first high-voltage external copper bar (71) is electrically connected with the second high-voltage external copper bar (72) through an intermediate connection high-voltage copper bar, and the intermediate connection high-voltage copper bar comprises: high-pressure copper bars (77) are connected to middle straight line and/or middle high-pressure copper bars (73) are connected in the bending, first high-pressure external copper bars (71) and/or set up on second high-pressure external copper bars (72) copper bar temperature sensor (756), a plurality of first high-pressure external copper bars (71) set up side by side high-pressure copper bar connection module (7)'s one end, a plurality of second high-pressure external copper bars (72) set up side by side high-pressure copper bar connection module (7)'s the other end, first high-pressure external copper bars (71) second high-pressure external copper bars (72) follow device lower cover plate (9) bottom stretches out.
2. The high-voltage battery module connecting device (1-1) of an electric vehicle according to claim 1, wherein the low-voltage harness assembly (5-1) comprises: the low-voltage wire harness (51) and a plurality of low-voltage wire harness branch wires (55), wherein one end of each low-voltage wire harness branch wire (55) is connected with the low-voltage wire harness (51), and the other end of each low-voltage wire harness branch wire extends out of the device shell and is used for being electrically connected with a low-voltage loop of the battery module (10).
3. The high-voltage battery module connecting device (1-1) of an electric vehicle according to claim 1, wherein the flexible circuit board assembly (5-2) includes: the flexible circuit board (58) is used for being electrically connected with the battery management system of the electric automobile, and the high-voltage copper bar temperature plug board (510), and the flexible circuit board (58) is electrically connected with the high-voltage copper bar temperature plug board (510).
4. The electric automobile high-voltage battery module connecting device (1-1) according to claim 3, wherein the high-voltage copper bar temperature plug board (510) comprises a temperature plug board body (5101), a butt joint hole (5102) is formed in one end of the temperature plug board body (5101), a welding hole (5104) is formed in the other end of the temperature plug board body, an expansion hole (5103) is formed between the butt joint hole (5102) and the welding hole (5104), the high-voltage copper bar connecting module (7) further comprises a high-voltage copper bar temperature control bus (76), one end of the high-voltage copper bar temperature control bus (76) is electrically connected with the copper bar temperature sensor (756), and the other end of the high-voltage copper bar temperature control bus (76) passes through the butt joint hole (5102) and then is welded with the welding hole (5104).
5. The high-voltage battery module connecting device (1-1) of an electric automobile according to claim 1, further comprising: the low-voltage module upper partition board (4) is arranged above the low-voltage connection module (5) and the low-voltage module lower partition board (6) is arranged below the low-voltage connection module (5), and the low-voltage connection module (5) and the low-voltage module upper partition board (4) are metal plates.
6. The high-voltage battery module connecting device (1-1) of the electric automobile according to claim 1, wherein one or more high-voltage copper bar middle connecting structures are arranged between the first high-voltage external copper bar (71) and the second high-voltage external copper bar (72);
the first high-voltage external copper bar (71) is electrically connected with the high-voltage copper bar connecting structure through the intermediate connecting high-voltage copper bar;
the two adjacent high-voltage copper bar intermediate connection structures are electrically connected through the intermediate connection high-voltage copper bar;
the second high-voltage external copper bar (72) is electrically connected with the high-voltage copper bar connecting structure through the intermediate connection high-voltage copper bar.
7. The high-voltage battery module connecting device (1-1) of an electric automobile according to claim 6, wherein the high-voltage copper bar connecting module (7) further comprises a high-voltage copper bar fixing structure (74), the high-voltage external copper bar is connected with one end of the high-voltage copper bar fixing structure (74), the middle connecting high-voltage copper bar is connected with the other end of the high-voltage copper bar fixing structure (74), and the copper bar temperature sensor (756) is fixed on the high-voltage copper bar fixing structure (74).
8. The high-voltage battery module connecting device (1-1) of the electric automobile according to claim 1, wherein the high-voltage copper bar connecting module (7) further comprises a high-voltage copper bar temperature control bus accommodating device (75), and a temperature monitoring low-voltage line (752) electrically connected with the copper bar temperature sensor (756) is summarized into a high-voltage copper bar temperature control bus (76) and is accommodated in the high-voltage copper bar temperature control bus accommodating device (75).
9. An electric automobile high-voltage battery module connecting structure, which is characterized by comprising an electric automobile high-voltage battery module connecting device (1-1) and a plurality of battery modules (10) according to any one of claims 1 to 8, wherein the low-voltage wiring harness assembly (5-1) of the low-voltage connecting module (5) of the electric automobile high-voltage battery module connecting device (1-1) is electrically connected with a low-voltage loop of the battery module (10), a flexible circuit board assembly (5-2) of the low-voltage connecting module (5) is electrically connected with a battery management system (1-6) of the electric automobile, and high-voltage copper bars of the high-voltage copper bar connecting module (7) of the electric automobile high-voltage battery module connecting device (1-1) are respectively electrically connected with the high-voltage loop of the battery module (10).
10. The high-voltage battery module connecting structure of an electric vehicle according to claim 9, wherein the high-voltage battery module connecting device (1-1) of an electric vehicle is provided with a plurality of passages above the battery modules (10) or in the middle of the plurality of battery modules (10).
11. The high-voltage battery module connecting structure of an electric vehicle according to claim 9, wherein the high-voltage copper bar of the high-voltage copper bar connecting module (7) is also electrically connected with the battery cut-off units (1-7) of the electric vehicle.
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| CN113659262A (en) * | 2021-08-13 | 2021-11-16 | 骆驼集团新能源电池有限公司 | High-power start-stop lithium battery system |
| CN113991228A (en) * | 2021-10-15 | 2022-01-28 | 湖南科霸汽车动力电池有限责任公司 | Nickel-hydrogen battery module for railway vehicle |
| CN116111268B (en) * | 2023-04-10 | 2023-07-14 | 长春捷翼汽车科技股份有限公司 | Battery pack structure |
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Address after: 430056 No. 10 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Wuhan, Hubei Applicant after: DONGFENG MOTER Co.,Ltd. Address before: 510800, Fengshen Road, Huadu District, Guangdong, Guangzhou 12 Applicant before: DONGFENG MOTER Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |