CN218887477U - Signal acquisition assembly and battery module - Google Patents

Signal acquisition assembly and battery module Download PDF

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Publication number
CN218887477U
CN218887477U CN202223282803.XU CN202223282803U CN218887477U CN 218887477 U CN218887477 U CN 218887477U CN 202223282803 U CN202223282803 U CN 202223282803U CN 218887477 U CN218887477 U CN 218887477U
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Prior art keywords
circuit board
assembly
bus bar
signal acquisition
battery module
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CN202223282803.XU
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Chinese (zh)
Inventor
任朝举
陆君高
张国江
徐宇虹
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Hubei Eve Power Co Ltd
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Hubei Eve Power Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The embodiment of the application discloses a signal acquisition assembly and a battery module. The signal acquisition assembly comprises a support, a bus bar assembly, a circuit board and at least one first acquisition wiring harness, the bus bar assembly is arranged on the support and is used for being electrically connected with an electrode of an electric core in the battery module, the circuit board is connected with the support, the circuit board comprises a plurality of first voltage acquisition terminals electrically connected with the bus bar assembly, at least one temperature sensor is arranged on the first acquisition wiring harness and is connected with the bus bar assembly, and one end of the first acquisition wiring harness is electrically connected with the circuit board. This application is through setting up the first collection pencil that is used for temperature acquisition for when the distance of temperature acquisition point and circuit board is far away, first collection pencil can regard as temperature acquisition's supplementary pencil, and need not to extend the circuit board to the temperature acquisition point that corresponds, thereby helps reducing the cost of manufacture of signal acquisition subassembly.

Description

Signal acquisition assembly and battery module
Technical Field
The application relates to the field of power batteries, in particular to a signal acquisition assembly and a battery module.
Background
With the rapid development of battery technology, the requirement for sampling battery data is becoming more and more strict, and the voltage and temperature of the battery module need to be monitored and sampled in real time. In the battery module, the battery management system needs to carry out sampling detection on the voltage, the temperature and other information of the battery cell through the signal acquisition assembly, along with the gradual increase of the number of the battery cell in the battery module, the distance between the circuit board in the temperature acquisition point and the signal acquisition assembly gradually changes away, and therefore the overall manufacturing cost of the signal acquisition assembly is increased.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a signal acquisition assembly and a battery module, and can solve the problem that the manufacturing cost of the signal acquisition assembly is high when the distance between a temperature acquisition point and a circuit board in the signal acquisition assembly is far away.
In one aspect, an embodiment of the present application provides a signal acquisition assembly, the signal acquisition assembly is used for the battery module, the signal acquisition assembly includes:
a support;
a busbar assembly disposed on the bracket; the bus bar assembly is used for being electrically connected with electrodes of the battery cells in the battery module;
the circuit board is connected with the bracket; the circuit board includes a plurality of first voltage acquisition terminals electrically connected with the busbar assembly;
at least one first collection pencil, be provided with at least one temperature sensor on the first collection pencil, temperature sensor with the busbar subassembly is connected, the one end of first collection pencil with the circuit board electricity is connected.
Optionally, in some embodiments of the present application, at least one adapter connector is disposed on the circuit board, and the adapter connector is electrically connected to the circuit board; one end of the first collecting wire harness is provided with a first adapter, and the first adapter of each first collecting wire harness is connected with one adapter connector so that the first collecting wire harness is electrically connected with the circuit board.
Optionally, in some embodiments of the present application, the signal acquisition assembly includes an output connector, the output connector is disposed on the circuit board, and the output connector is electrically connected to the circuit board.
Optionally, in some embodiments of the present application, the bracket has two first sides opposite in a first direction, and two second sides opposite in a second direction; the circuit board is arranged on the second side of the support, the circuit board extends along the first direction, and the plurality of first voltage acquisition terminals are arranged at intervals along the first direction in sequence.
Optionally, in some embodiments of the present application, the circuit board extends to the first side of the bracket along the first direction, and forms an output portion on the first side of the bracket, and the adaptor connector and the output connector are disposed on the output portion.
Optionally, in some embodiments of the present application, the signal acquisition assembly includes two circuit boards, and the two circuit boards are respectively disposed on the second side of the bracket along the second direction; the output parts of the two circuit boards are positioned on the same side of the bracket.
Optionally, in some embodiments of the present application, the signal acquisition assembly includes a reinforcing plate located between the output and the first side of the bracket; the reinforcing plate is connected with the bracket, and the output part of the circuit board is arranged on the reinforcing plate.
Optionally, in some embodiments of the present application, the signal acquisition assembly includes at least one second acquisition harness, a second adapter is disposed at one end of the second acquisition harness, and the second adapter of each second acquisition harness is connected to one of the adapter connectors respectively; the second collection wire harness includes a plurality of second voltage collection terminals, and the plurality of second voltage collection terminals are electrically connected to the bus bar assembly.
Optionally, in some embodiments of the present application, the signal collecting assembly includes a heat conducting sheet, one end of the heat conducting sheet is connected to the temperature sensor on the first collecting harness, and the other end of the heat conducting sheet is welded to the bus bar assembly.
Optionally, in some embodiments of the present application, a mounting hole is formed in a position of the heat conducting sheet corresponding to the temperature sensor, and the temperature sensor is located in the mounting hole and connected to the heat conducting sheet.
On the other hand, the embodiment of this application still provides a battery module, battery module includes a plurality of electric core units and the signal acquisition subassembly of above-mentioned any, the signal acquisition subassembly with a plurality of electric core unit electricity are connected.
Optionally, in some embodiments of the present application, the battery module includes at least two sub-modules arranged in parallel along the second direction, and each sub-module includes a plurality of the cell units arranged in parallel along the first direction; the circuit board of the signal acquisition assembly is arranged on two opposite sides of the battery module along the second direction, and the first voltage acquisition terminal of the circuit board is electrically connected with the battery cell units of the adjacent sub-modules in a one-to-one correspondence manner.
Optionally, in some embodiments of the present application, the battery module includes at least three sub-modules arranged in parallel along the second direction, and each sub-module includes a plurality of the cell units arranged in parallel along the first direction; and a second acquisition wiring harness of the signal acquisition assembly is positioned on the top surface of the battery module, and a second voltage acquisition terminal of the second acquisition wiring harness is electrically connected with the battery cell units corresponding to the sub-modules in a one-to-one correspondence manner.
Optionally, in some embodiments of the present application, the bus bar assembly of the signal acquisition assembly includes a positive output bus bar, a negative output bus bar, a first connection bus bar and a second connection bus bar, the positive output bus bar is electrically connected to the electrical core unit located at the positive output end, the negative output bus bar is electrically connected to the electrical core unit located at the negative output end, the first connection bus bar is electrically connected to the electrical core unit in the sub-module, and the second connection bus bar is electrically connected to two adjacent sub-modules.
The signal acquisition assembly in the embodiment of the application comprises a support, a busbar assembly, a circuit board and at least one first acquisition wire harness, wherein the busbar assembly is arranged on the support, the busbar assembly is used for being electrically connected with an electrode of an electric core in a battery module, the circuit board is connected with the support, the circuit board comprises a plurality of first voltage acquisition terminals electrically connected with the busbar assembly, at least one temperature sensor is arranged on the first acquisition wire harness and connected with the busbar assembly, and one end of the first acquisition wire harness is electrically connected with the circuit board. This application is through setting up the first collection pencil that is used for temperature acquisition for when the distance of temperature acquisition point and circuit board is far away, first collection pencil can regard as temperature acquisition's supplementary pencil, and need not to extend the circuit board to the temperature acquisition point that corresponds, thereby helps reducing the holistic cost of manufacture of signal acquisition subassembly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a signal acquisition assembly provided in an embodiment of the present application;
FIG. 2 is an enlarged schematic structural diagram of a region A in FIG. 1 according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of an integrated circuit board structure provided in an embodiment of the present application;
FIG. 4 is an enlarged structural diagram of a region B in FIG. 3 according to an embodiment of the present application;
FIG. 5 is a schematic diagram of another integrated circuit board structure provided in the embodiments of the present application;
fig. 6 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure.
Description of reference numerals:
Figure BDA0003978806430000041
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the present application, are given by way of illustration and explanation only, and are not intended to limit the present application. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application provides a signal acquisition assembly and a battery module, which are respectively described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
First, as shown in fig. 1 and fig. 6, the signal acquisition assembly 100 includes a bracket 110, where the bracket 110 is used to be placed on the top surface of the battery module 10 to separate other structures in the signal acquisition assembly 100 from the battery module 10, and meanwhile, the other structures in the signal acquisition assembly 100 can also be supported, so as to ensure stable signal acquisition.
The signal collecting assembly 100 includes a bus bar assembly 120, the bus bar assembly 120 is disposed on the bracket 110, and the bus bar assembly 120 is used to electrically connect with electrodes of the battery cells in the battery module 10. The bus bar assembly 120 includes an anode output bus bar 121, a cathode output bus bar 122, and a plurality of first connection bus bars 123, where each first connection bus bar 123 is at least electrically connected to electrodes of two battery cells, and the plurality of first connection bus bars 123 connect the plurality of battery cells in series and parallel to form the battery module 10, the anode output bus bar 121 is electrically connected to a battery cell located at an anode output end in the battery module 10, and the cathode output bus bar 122 is electrically connected to a battery cell located at a cathode output end in the battery module 10.
It should be noted that, the support 110 is provided with a mounting groove, and a through hole is formed at the bottom of the mounting groove to expose the electrode of the battery cell. Busbar subassembly 120 sets up in the mounting groove, and busbar subassembly 120 sets up and connects a plurality of electric core electricity through-hole and the electric core contact that corresponds. By providing the mounting groove on the bracket 110, the busbar assembly 120 can be placed in the mounting groove, and positioning and mounting of the busbar assembly 120 are achieved. A through hole is formed in the bottom of the mounting groove, and part of the bottom surface of the busbar assembly 120 can be in contact with and connected to the end surfaces of the battery cells through the through hole, so that the battery cells can be electrically connected. The bracket 110 defines the position of the bus bar assembly 120, so as to prevent the bus bar assembly 120 from being misaligned with the battery cell, and to help ensure the connection reliability of the bus bar assembly 120 and the battery cell.
As shown in fig. 3 and 4, the signal collecting assembly 100 includes a circuit board 130, the circuit board 130 is connected to the bracket 110, and in order to ensure flexibility of the setting position of the circuit board 130, the circuit board 130 in the embodiment of the present application may adopt a flexible circuit board 130, so that the circuit board 130 can be bent according to the setting requirement, so as to avoid affecting the connection between the bus bar assembly 120 and the battery module 10.
A plurality of positioning posts can be protruded on the bracket 110, and positioning holes are formed on the circuit board 130 at positions corresponding to the positioning posts. When the circuit board 130 is mounted on the support 110, the positioning posts pass through the positioning holes, and then the circuit board 130 is connected with the support 110 by means of hot riveting. Meanwhile, the side of the circuit board 130 facing the bracket 110 can be bonded to the bracket 110, so as to further improve the stability of the connection between the circuit board 130 and the bracket 110.
The circuit board 130 includes a plurality of first voltage collecting terminals 131, and the plurality of first voltage collecting terminals 131 are electrically connected to the bus bar assembly 120. The bus bar assembly 120 includes a positive output bus bar 121, a negative output bus bar 122, and a plurality of first connection bus bars 123, and the positive output bus bar 121, the negative output bus bar 122, and each of the first connection bus bars 123 are correspondingly connected to a first voltage collecting terminal 131, so as to monitor the voltage of each battery cell in the battery module 10. That is, the circuit board 130 integrates a voltage signal of each cell in the battery module 10.
The signal collection assembly 100 includes at least one first collection harness 140, at least one temperature sensor 150 is disposed on the first collection harness 140, the temperature sensor 150 is connected to the bus bar assembly 120, and one end of the first collection harness 140 is electrically connected to the circuit board 130. Along with the increase of the number of the battery cells contained in the battery module 10, the distance between the temperature acquisition of the middle area of the battery module 10 and the voltage acquisition of the circuit board 130 is increased, the first acquisition wire harness 140 is arranged on the busbar assembly 120, the temperature sensor 150 is arranged on the first acquisition wire harness 140, and then the first acquisition wire harness 140 is electrically connected to the circuit board 130, so that the temperature information acquired by the temperature sensor 150 can be transmitted to the circuit board 130 through the first acquisition wire harness 140, and the integrated integration of the temperature information and the voltage information on the circuit board 130 is realized.
The number of the temperature sensors 150 arranged on the first collecting harness 140 can be adjusted according to actual design requirements; in addition, along with the change of temperature acquisition position, first collection pencil 140 can be buckled on busbar subassembly 120 to set up temperature sensor 150 at the target location that corresponds, in order to satisfy battery module 10 different position temperature monitoring's demand.
The signal collection assembly 100 in the embodiment of the present application includes a support 110, a bus bar assembly 120, a circuit board 130, and at least one first collection harness 140, where the bus bar assembly 120 is disposed on the support 110, the bus bar assembly 120 is used to be electrically connected to an electrode of an electric core in the battery module 10, the circuit board 130 is connected to the support 110, the circuit board 130 includes a plurality of first voltage collection terminals 131 electrically connected to the bus bar assembly 120, the first collection harness 140 is provided with at least one temperature sensor 150, the temperature sensor 150 is connected to the bus bar assembly 120, and one end of the first collection harness 140 is electrically connected to the circuit board 130. This application is through setting up the first collection pencil 140 that is used for temperature acquisition for when the distance of temperature acquisition point and circuit board 130 is far away, first collection pencil 140 can regard as temperature acquisition's supplementary pencil, and need not to extend circuit board 130 to the temperature acquisition point that corresponds, thereby helps reducing the holistic cost of manufacture of signal acquisition subassembly 100.
Optionally, at least one adaptor connector 170 is disposed on the circuit board 130, the adaptor connector 170 is electrically connected to the circuit board 130, a first adaptor 141 is disposed at one end of the first collection harness 140, and the first adaptor 141 of each first collection harness 140 is connected to one of the adaptor connectors 170, so that the first collection harness 140 is electrically connected to the circuit board 130. By arranging the adaptor connector 170 on the circuit board 130, the temperature information acquired by the first acquisition harness 140 can be transmitted to the adaptor connector 170 through the first adaptor connector 141, and then transmitted to the circuit board 130 through the adaptor connector 170.
The first adapter 141 and the adapter connector 170 can be connected by gold fingers, so that the first collection wire harness 140 can be inserted into the adapter connector 170 or pulled out of the adapter connector 170 through the first adapter 141, thereby facilitating the installation of the first collection wire harness 140. Different requirements for temperature acquisition can be realized by designing the first adapter 141 and the corresponding circuit structure in the adapter connector 170.
It should be noted that one adaptor connector 170 may be connected to only one first adaptor 141, that is, only one socket is provided on one adaptor connector 170, and is correspondingly connected to the first adaptor 141. Alternatively, one adaptor connector 170 can be connected to multiple first adaptor connectors 141 at the same time, that is, multiple sockets are simultaneously disposed on one adaptor connector 170, and can be connected to different first adaptor connectors 141 respectively, so as to further improve the integration level of the signal acquisition assembly 100. When a plurality of sockets are arranged on one adaptor connector 170 and the circuit structure on each first acquisition harness 140 is the same, the sockets on the adaptor connector 170 can be arbitrarily adapted to the first adaptor connector 141, so as to improve the connection flexibility between the first acquisition harness 140 and the adaptor connector 170.
The signal collecting assembly 100 further includes an output connector 180, the output connector 180 is disposed on the circuit board 130, and the output connector 180 is electrically connected to the circuit board 130, that is, the adaptor connector 170 is electrically connected to the output connector 180 through the circuit board 130, so that the temperature information collected by the first collecting harness 140 can be transmitted to the circuit board 130 through the adaptor connector 170, and then transmitted to the output connector 180 through the circuit board 130. The output connector 180 is used for connecting with an external monitoring device to output the signal collected by the signal collecting assembly 100 to the monitoring device. Since the temperature information and the voltage information are integrated on the circuit board 130 at the same time, one output connector 180 can output the temperature information and the voltage information at the same time, thereby improving the integration level of the signal acquisition assembly 100.
Optionally, the bracket 110 has two first sides 111 opposite to each other along the first direction X and two second sides 112 opposite to each other along the second direction Y, the circuit board 130 is disposed on the second sides 112 of the bracket 110, the circuit board 130 extends along the first direction X, and the plurality of first voltage collecting terminals 131 are sequentially disposed at intervals along the first direction X. That is, the circuit board 130 is disposed at the side of the bracket 110, the bracket 110 is disposed at the top surface of the battery module 10, and the bus bar assembly 120 is disposed on the bracket 110, that is, the circuit board 130 is disposed at the side of the battery module 10, so as to prevent the circuit board 130 from interfering with the welding area between the bus bar assembly 120 and the battery module 10, thereby facilitating the signal acquisition assembly 100 to acquire the voltage signal of the battery module 10.
It should be noted that, the battery module 10 includes a plurality of battery cell units 310, the plurality of battery cell units 310 are arranged in parallel along the first direction X, each battery cell unit 310 includes at least two battery cells arranged in parallel along the second direction Y, the plurality of first connecting busbars 123 are arranged in parallel along the first direction X, each first connecting busbar 123 is connected in parallel to the battery cells arranged in parallel along the second direction Y in the battery cell unit 310, and the plurality of first connecting busbars 123 are then connected in series to the battery cells arranged in parallel along the first direction X. Through setting up a plurality of first voltage acquisition terminals 131 at intervals in proper order along first direction X, make every first voltage acquisition terminal 131 be connected with the first connection busbar 123 electricity that corresponds to make every first voltage acquisition terminal 131 can monitor the voltage of a plurality of electric cores in a electrical core unit 310 simultaneously, and then realize the monitoring to each electric core voltage of battery module 10.
Alternatively, the circuit board 130 extends to the first side 111 of the bracket 110 along the first direction X, and an output portion 132 is formed on the first side 111 of the bracket 110, and the adaptor connector 170 and the output connector 180 are disposed on the output portion 132. Since the portion of the circuit board 130 located on the second side 112 is mainly used for collecting the voltage signal, the integrated design of the adapter connector 170 and the output connector 180 on the circuit board 130 is facilitated by extending the circuit board 130 to the first side 111 and forming the output portion 132; meanwhile, the first side 111 of the bracket 110 corresponds to the positive output bus bar 121 and the negative output bus bar 122, that is, the first side 111 of the bracket 110 corresponds to the positive output end cell and the negative output end cell of the battery module 10, and the output connector 180 is disposed on the first side 111, which also helps the output design of the signal collected by the signal collecting assembly 100.
In some embodiments, the signal collecting assembly 100 includes two circuit boards 130, the two circuit boards 130 are respectively disposed on the second sides 112 of the support 110 along the second direction Y, and the output portions 132 of the two circuit boards 130 are located on the same side of the support 110. When the battery module 10 is assembled in series-parallel connection, the battery module 10 can be divided into two sub-modules 300, the bus bar assembly 120 further includes a second connecting bus bar 124, the two sub-modules 300 are arranged in parallel along the second direction Y and connected in series through the second connecting bus bar 124, and each sub-module 300 includes a plurality of battery cell units 310 arranged in parallel along the first direction X. Through setting up two circuit boards 130 respectively at two relative second sides 112 of support 110 for the voltage signal of electric core in the corresponding sub-module 300 is monitored respectively to first voltage acquisition terminal 131 on every circuit board 130, and simultaneously, also can avoid circuit board 130 to busbar subassembly 120 and the welding area production of corresponding sub-module 300 to disturb, and then help signal acquisition subassembly 100 to the collection of battery module 10 voltage signal.
It should be noted that, because two sub-modules 300 are connected in series, one end of one sub-module 300 is the positive output end of the battery module 10, and one end of the other sub-module 300 is the negative output end of the battery module 10, through the connection design of the electric core units 310 in the two sub-modules 300, the positive output end and the negative output end of the battery module 10 can be located on the same side of the bracket 110, so that the output parts 132 of the two circuit boards 130 can be arranged on the same side of the bracket 110, which is convenient for the overall design of the signal output of the battery module 10, and simultaneously, the connection of the signal acquisition assembly 100 and the external monitoring device can be simplified.
In other embodiments, the signal acquisition assembly 100 includes a reinforcing plate 190, the reinforcing plate 190 is disposed between the output portion 132 and the first side 111 of the bracket 110, the reinforcing plate 190 is connected to the bracket 110, and the output portion 132 of the circuit board 130 is mounted on the reinforcing plate 190. Because the output portion 132 of the circuit board 130 needs to be soldered with the output connector 180 and the adaptor connector 170, so as to realize the integrated integration of the signal acquisition assembly 100, and meanwhile, in order to facilitate the structural design of the circuit board 130, the circuit board 130 needs to have certain flexibility, and by arranging the reinforcing plate 190 between the output portion 132 and the first side 111 of the bracket 110, the output portion 132 of the circuit board 130 can be supported to a certain extent, so as to ensure the structural stability of the circuit board 130 relative to the bracket 110, thereby facilitating the stability of signal acquisition of the signal acquisition assembly 100.
The first side 111 of the support 110 can be provided with a plurality of positioning posts, and the reinforcing plate 190 has positioning holes formed at positions corresponding to the positioning posts. When the reinforcing plate 190 is mounted on the bracket 110, the positioning posts penetrate through the positioning holes, and then the reinforcing plate 190 is connected with the bracket 110 by means of hot riveting. Meanwhile, the side of the reinforcing plate 190 facing the bracket 110 can be bonded to the bracket 110, so as to further improve the stability of the connection between the reinforcing plate 190 and the bracket 110, and thus enhance the stability of the connection between the whole circuit board 130 and the bracket 110.
In still other embodiments, as shown in fig. 5, when the battery module 10 is composed of a plurality of sub-modules 300 that are arranged in parallel and connected in series along the second direction Y, the circuit boards 130 distributed at two sides of the bracket 110 can only monitor the voltage information of the sub-modules 300 at two corresponding sides, but cannot monitor the voltage information of the sub-module 300 at the middle region. To this end, the signal collecting assembly 100 may further include at least one second collecting harness 160, one end of the second collecting harness 160 is provided with a second adapter 161, the second adapter 161 of each second collecting harness 160 is respectively connected with one adapter connector 170, the second collecting harness 160 includes a plurality of second voltage collecting terminals 162, and the plurality of second voltage collecting terminals 162 are electrically connected with the busbar assembly 120. By arranging the second adapter 161 at one end of the second collection harness 160 and connecting the second adapter 161 with the adapter connector 170, the voltage signal collected on the second collection harness 160 can be integrated on the circuit board 130, and then output from the same output connector 180, so as to realize the integrated integration of the voltage signal and the temperature signal.
It should be noted that the second collecting harness 160 and the first collecting harness 140 may be the same collecting harness, that is, the first collecting harness 140 is simultaneously provided with the second voltage collecting terminal 162 and the temperature sensor 150 to monitor the voltage signal and the temperature signal, at this time, although the number of collecting points on one collecting harness is increased and the corresponding circuit structure is complicated, the number of collecting harnesses may be reduced, so as to reduce the area ratio of the adaptor connector 170 on the output portion 132, so as to improve the integration level of the circuit board 130.
Alternatively, as shown in fig. 2, the signal collection assembly 100 includes a heat conduction sheet 200, one end of the heat conduction sheet 200 is connected to the temperature sensor 150 on the first collection harness 140, and the other end of the heat conduction sheet 200 is welded to the bus bar assembly 120. Because the cooling structure setting of battery module 10 is in the both sides of electric core for the heat that battery module 10 produced mainly concentrates on the top, and battery module 10 top electrode is connected with busbar subassembly 120, thereby make the heat that battery module 10 produced transmit to conducting strip 200 through busbar subassembly 120, then transmit to temperature sensor 150 by conducting strip 200, temperature sensor 150 monitors temperature information, and convert temperature information into voltage signal transmission to circuit board 130, then export through output connector 180. By disposing the heat-conducting sheet 200 between the temperature sensor 150 and the busbar assembly 120 and disposing the temperature sensor 150 on the first collecting harness 140, it is possible to improve the flexibility of disposing the temperature sensor 150 and to facilitate the transmission design of the temperature signal, compared to directly attaching the temperature sensor 150 to the busbar assembly 120.
The heat conducting sheet 200 has a mounting hole 210 corresponding to the temperature sensor 150, and the temperature sensor 150 is located in the mounting hole 210 and connected to the heat conducting sheet 200. By disposing the temperature sensor 150 in the mounting hole 210 of the thermally conductive sheet 200, heat generated from the battery module 10 can be transmitted to the temperature sensor 150 through the periphery of the mounting hole 210, which facilitates monitoring of temperature information by the temperature sensor 150. In addition, the temperature sensor 150 is arranged in the mounting hole 210 of the heat conducting fin 200, the arrangement position of the temperature sensor 150 can be positioned, and the heat conducting glue 220 is filled between the temperature sensor 150 and the side wall of the mounting hole 210, so that the connection stability of the temperature sensor 150 and the heat conducting fin 200 can be improved, and the stability of the temperature sensor 150 for collecting temperature signals can be further improved.
In some embodiments, the mounting hole 210 is further filled with a heat conducting glue 220, the heat conducting glue 220 covers the temperature sensor 150, and the arrangement of the heat conducting glue 220 can further enhance the connection stability between the temperature sensor 150 and the heat conducting sheet 200; in addition, the filling of the thermal conductive adhesive 220 can further increase the effective contact area between the temperature sensor 150 and the thermal conductive sheet 200, thereby improving the thermal conduction between the thermal conductive sheet 200 and the temperature sensor 150, and further improving the temperature acquisition effect of the signal acquisition assembly 100.
Secondly, this application embodiment still provides a battery module, and this battery module includes the signal acquisition subassembly, and the concrete structure of this signal acquisition subassembly refers to above-mentioned embodiment, because this battery module has adopted all technical scheme of above-mentioned all embodiments, consequently has at least all beneficial effects that the technical scheme of above-mentioned embodiment brought, and the repeated description is not given here.
As shown in fig. 6, the battery module 10 includes a plurality of electric core units 310 and a signal acquisition assembly 100, and the signal acquisition assembly 100 is electrically connected to the plurality of electric core units 310 to acquire voltage signals and temperature signals in the battery module 10, and output the acquired signals to a monitoring device, so as to monitor the operating state of the battery module 10 in real time, and ensure safe use of the battery module 10.
Specifically, the signal collection assembly 100 includes a support 110, a bus bar assembly 120, a circuit board 130 and at least one collection wire harness, wherein the bus bar assembly 120 is disposed on the support 110, the bus bar assembly 120 is configured to be electrically connected to an electrode of a cell unit 310 in the battery module 10, the circuit board 130 is connected to the support 110, the circuit board 130 includes a plurality of first voltage collection terminals 131 electrically connected to the bus bar assembly 120, the first collection wire harness 140 is provided with at least one temperature sensor 150, the temperature sensor 150 is connected to the bus bar assembly 120, and one end of the first collection wire harness 140 is electrically connected to the circuit board 130. By arranging the first collection harness 140 for temperature collection, when the distance between the temperature collection point and the circuit board 130 is far, the first collection harness 140 can be used as a supplementary harness for temperature collection, and the circuit board 130 does not need to be extended to the corresponding temperature collection point, so that the whole manufacturing cost of the signal collection assembly 100 is reduced.
In some embodiments, the battery module 10 includes at least two sub-modules 300 arranged in parallel along the second direction Y, each sub-module 300 includes a plurality of cell units 310 arranged in parallel along the first direction X, and each cell unit 310 includes at least two cells arranged in parallel along the second direction Y. The circuit boards 130 of the signal acquisition assembly 100 are disposed on two opposite sides of the battery module 10 along the second direction Y, the first voltage acquisition terminals 131 on the circuit boards 130 are electrically connected to the cell units 310 of the adjacent sub-modules 300 in a one-to-one correspondence manner, that is, the first voltage acquisition terminals 131 on the circuit boards 130 are used for acquiring voltages of the cell units 310 in the sub-modules 300 located on two opposite sides in the second direction Y in the battery module 10, so as to avoid the circuit boards 130 from interfering with welding areas of the busbar assembly 120 and the corresponding sub-modules 300 in the signal acquisition assembly 100.
In other embodiments, the battery module 10 includes at least three sub-modules 300 arranged in parallel along the second direction Y, each sub-module 300 includes a plurality of cell units 310 arranged in parallel along the first direction X, and each cell unit 310 includes at least two cells arranged in parallel along the second direction Y. At this time, the circuit boards 130 distributed at opposite sides of the battery module 10 can only monitor the voltage information of the sub-modules 300 at the corresponding sides, but cannot monitor the voltage information of the sub-module 300 at the middle region.
To this end, the signal collecting assembly 100 can further include at least one second collecting harness 160, the second collecting harness 160 is located on the top surface of the battery module 10, and the second voltage collecting terminal 162 of the second collecting harness 160 is electrically connected to the battery cell units 310 of the corresponding sub-module 300 through the bus bar assembly 120 in a one-to-one correspondence manner. One end of the second collecting harness 160 is provided with a second adapter 161, and the second adapter 161 of each second collecting harness 160 is connected to one of the adapter connectors 170 of the signal collecting assembly 100. By arranging the second adapter 161 at one end of the second collection harness 160 and connecting the second adapter 161 with the adapter connector 170, the voltage signal collected on the second collection harness 160 can be integrated on the circuit board 130, and then output from the same output connector 180, so as to realize the integrated integration of the voltage signal and the temperature signal.
It should be noted that the plurality of sub-modules 300 of the battery module 10 in the embodiment of the present application are connected by the bus bar assembly 120, which includes the positive output bus bar 121, the negative output bus bar 122, the first connecting bus bar 123 and the second connecting bus bar 124. The positive output bus bar 121 is electrically connected to the cell unit 310 at the positive output end, the negative output bus bar 122 is electrically connected to the cell unit 310 at the negative output end, the first connection bus bar 123 is electrically connected to the cell unit 310 in the sub-module 300, and the second connection bus bar 124 is electrically connected to two adjacent sub-modules 300.
That is to say, as shown in fig. 6, the whole battery module 10 has a positive output end and a negative output end, and the positive output end and the negative output end are respectively located on the sub-modules 300 distributed on two opposite sides along the second direction Y, wherein the cell unit 310 at one end of one sub-module 300 is the positive output end, and the cell unit 310 at one end of the other sub-module 300 is the negative output end. The positive output bus bar 121 is electrically connected to the cell units 310 at the positive output end to output the collected information corresponding to the cell units 310; the negative output bus bar 122 is electrically connected to the cell unit 310 at the negative output end to output the collected information corresponding to the cell unit 310.
The plurality of cell units 310 in each sub-module 300 are connected in series and parallel through a first connecting bus bar 123, that is, the first connecting bus bar 123 is used for connecting a plurality of cells of one cell unit 310 in one sub-module 300 in parallel, and meanwhile, the first connecting bus bar 123 is connected in series with two adjacent cell units 310 in one sub-module 300; the two sub-modules 300 are connected in series via the second connection bus bar 124, thereby forming the battery module 10. The design of the connection mode between the bus bar assembly 120 and the sub-module 300 can meet the design requirements of different battery modules 10.
The signal acquisition assembly and the battery module provided by the embodiment of the application are described in detail, a specific example is applied in the description to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (14)

1. The utility model provides a signal acquisition subassembly which characterized in that, signal acquisition subassembly is used for the battery module, signal acquisition subassembly includes:
a support;
a busbar assembly disposed on the bracket; the bus bar assembly is used for being electrically connected with electrodes of the battery cells in the battery module;
the circuit board is connected with the bracket; the circuit board comprises a plurality of first voltage acquisition terminals electrically connected with the bus bar assembly;
at least one first collection pencil, be provided with at least one temperature sensor on the first collection pencil, temperature sensor with the busbar subassembly is connected, the one end of first collection pencil with the circuit board electricity is connected.
2. The signal acquisition assembly of claim 1 wherein the circuit board has at least one adapter connector disposed thereon, the adapter connector being electrically connected to the circuit board; one end of the first collecting wire harness is provided with a first adapter, and the first adapter of each first collecting wire harness is connected with one adapter connector so that the first collecting wire harness is electrically connected with the circuit board.
3. The signal acquisition assembly of claim 2, comprising an output connector disposed on the circuit board, the output connector being electrically connected to the circuit board.
4. The signal acquisition assembly of claim 3 wherein the cradle has two first sides opposite in a first direction and two second sides opposite in a second direction; the circuit board is arranged on the second side of the support, the circuit board extends along the first direction, and the plurality of first voltage acquisition terminals are arranged at intervals along the first direction in sequence.
5. The signal acquisition assembly of claim 4 wherein the circuit board extends in the first direction to a first side of the bracket and forms an output on the first side of the bracket, the adapter connector and the output connector being disposed on the output.
6. The signal acquisition assembly of claim 4 or 5, wherein the signal acquisition assembly comprises two of the circuit boards, the two circuit boards being respectively disposed on the second side of the bracket along the second direction; the output parts of the two circuit boards are positioned on the same side of the bracket.
7. The signal acquisition assembly of claim 5 comprising a reinforcing plate between the output and the first side of the bracket; the reinforcing plate is connected with the bracket, and the output part of the circuit board is arranged on the reinforcing plate.
8. The signal acquisition assembly of claim 2, wherein the signal acquisition assembly comprises at least one second acquisition harness, one end of the second acquisition harness is provided with a second adapter, and the second adapter of each second acquisition harness is connected with one of the adapter connectors; the second collection wire harness includes a plurality of second voltage collection terminals, and the plurality of second voltage collection terminals are electrically connected to the bus bar assembly.
9. The signal acquisition assembly of claim 1, comprising a thermally conductive sheet, one end of the thermally conductive sheet being connected to the temperature sensor on the first acquisition harness, the other end of the thermally conductive sheet being welded to the bus bar assembly.
10. The signal collection assembly of claim 9, wherein a mounting hole is formed in the heat conductive sheet at a position corresponding to the temperature sensor, and the temperature sensor is located in the mounting hole and connected to the heat conductive sheet.
11. A battery module, wherein the battery module comprises a plurality of cell units and the signal acquisition assembly of any one of claims 1 to 10, and the signal acquisition assembly is electrically connected to the plurality of cell units.
12. The battery module according to claim 11, wherein the battery module comprises at least two sub-modules arranged in parallel along the second direction, and each sub-module comprises a plurality of the cell units arranged in parallel along the first direction; the circuit board of the signal acquisition assembly is arranged on two opposite sides of the battery module along the second direction, and the first voltage acquisition terminal of the circuit board is electrically connected with the battery cell units of the adjacent sub-modules in a one-to-one correspondence manner.
13. The battery module according to claim 11, wherein the battery module comprises at least three sub-modules arranged in parallel along the second direction, and each sub-module comprises a plurality of the cell units arranged in parallel along the first direction; and a second acquisition wiring harness of the signal acquisition assembly is positioned on the top surface of the battery module, and a second voltage acquisition terminal of the second acquisition wiring harness is electrically connected with the battery cell units corresponding to the sub-modules in a one-to-one correspondence manner.
14. The battery module according to claim 12 or 13, wherein the bus bar assembly of the signal acquisition assembly comprises a positive output bus bar, a negative output bus bar, a first connection bus bar and a second connection bus bar, the positive output bus bar is electrically connected to the cell unit at the positive output end, the negative output bus bar is electrically connected to the cell unit at the negative output end, the first connection bus bar is electrically connected to the cell units in the sub-module, and the second connection bus bar is electrically connected to two adjacent sub-modules.
CN202223282803.XU 2022-12-02 2022-12-02 Signal acquisition assembly and battery module Active CN218887477U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223282803.XU CN218887477U (en) 2022-12-02 2022-12-02 Signal acquisition assembly and battery module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223282803.XU CN218887477U (en) 2022-12-02 2022-12-02 Signal acquisition assembly and battery module

Publications (1)

Publication Number Publication Date
CN218887477U true CN218887477U (en) 2023-04-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223282803.XU Active CN218887477U (en) 2022-12-02 2022-12-02 Signal acquisition assembly and battery module

Country Status (1)

Country Link
CN (1) CN218887477U (en)

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