CN211480176U - Sampling device and battery module - Google Patents
Sampling device and battery module Download PDFInfo
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- CN211480176U CN211480176U CN202020231662.0U CN202020231662U CN211480176U CN 211480176 U CN211480176 U CN 211480176U CN 202020231662 U CN202020231662 U CN 202020231662U CN 211480176 U CN211480176 U CN 211480176U
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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
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Abstract
The embodiment of the utility model provides a sampling device and battery module relates to power battery sampling technical field. The sampling device comprises a first sampling circuit board, a second sampling circuit board, a first plug connector and a connector, wherein the first sampling circuit board and the second sampling circuit board are both FFC or FPC, the first sampling circuit board is connected with the second sampling circuit board in a plug-in mode through the first plug connector, the first sampling circuit board and the second sampling circuit board are used for being electrically connected with busbars at two ends of a battery module respectively and used for sampling a battery cell of the battery module, the first sampling circuit board or the second sampling circuit board is electrically connected with the connector, and the connector is used for being electrically connected with a battery management system. The sampling device and the battery module can be conveniently assembled, the battery grouping efficiency and the production efficiency can be improved, and the sampling device and the battery module have wide application prospects.
Description
Technical Field
The utility model relates to a power battery sampling technical field particularly, relates to a sampling device and battery module.
Background
The traditional power battery module mostly adopts a wire harness to collect temperature and voltage signals of a battery in the module, and then the battery management system monitors in real time, manages and adjusts the running state of the battery. However, the wiring of the collection wire harness inside the power battery module is complicated, the assembly process is complicated, the production efficiency is low, and the wire harness assembly occupies a large amount of space inside the module, which is not beneficial to the optimization utilization of the space inside the module and the improvement of the grouping efficiency; in addition, the stability of the wire harness collecting structure is poor, and the ageing resistance is weak.
The design utilizes flexible circuit board as the collection structure among the prior art, can reduce the occupation to battery module inner space to simplify the circuit, but its installation is inconvenient, influences battery and organizes efficiency and production efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sampling device and battery module, for example, it can convenient assembly, is favorable to improving battery efficiency in groups and production efficiency, has wide application prospect.
The embodiment of the utility model discloses a can realize like this:
in a first aspect, an embodiment provides a sampling device for a battery module, the sampling device includes a first sampling circuit board, a second sampling circuit board, a first connector and a connector, the first sampling circuit board and the second sampling circuit board are both FFC or FPC, the first sampling circuit board passes through the first connector with the second sampling circuit board can be connected in a pluggable manner, the first sampling circuit board and the second sampling circuit board are used for being connected with the busbar electricity at two ends of the battery module respectively and are used for sampling the electric core of the battery module, the first sampling circuit board or the second sampling circuit board with the connector electricity is connected, and the connector is used for being connected with a battery management system electricity.
In an optional embodiment, at least one first sampling metal sheet is disposed on the first sampling circuit board, and the at least one first sampling metal sheet is used for being electrically connected to the bus bar and sampling the battery cells.
In an optional embodiment, the first sampling circuit board includes a first main body and at least one first branch, the at least one first branch is electrically connected to the first main body, and the at least one first sampling metal sheet is disposed on the at least one first branch in a one-to-one correspondence.
In optional implementation, the second sampling circuit board includes connecting circuit board, sampling circuit board and second connector, connecting circuit board with the sampling circuit board is FFC or FPC, the sampling circuit board with the position of first sampling circuit board is relative, and passes through the second connector with but connecting circuit board plug connects, connecting circuit board passes through first connector with but first sampling circuit board plug connects, the sampling circuit board be used for with the busbar electricity is connected, and is right the electricity core sampling.
In an optional embodiment, at least one second sampling metal sheet is disposed on the sampling circuit board, and the at least one second sampling metal sheet is used for being electrically connected to the busbar and sampling the battery cells.
In an optional embodiment, the second sampling circuit board includes a second main body and at least one second branch, the at least one second branch is electrically connected to the second main body, and the at least one second sampling metal sheet is disposed on the at least one second branch in a one-to-one correspondence.
In an alternative embodiment, the first sampling circuit board and the second sampling circuit board are manufactured from the same FFC or FPC.
In an optional embodiment, the sampling device further includes a temperature sensor and a temperature sensor connection circuit board electrically connected to each other, the temperature sensor connection circuit board is an FFC or an FPC and is electrically connected to the connector, and the temperature sensor is configured to be disposed on the surface of the battery cell.
In an optional embodiment, the sampling device further includes a pressure sensor and a pressure sensor connection circuit board electrically connected to each other, the pressure sensor connection circuit board is an FFC or an FPC and is electrically connected to the connector, and the pressure sensor is configured to be disposed on the surface of the battery cell.
In a second aspect, an embodiment provides a battery module, which includes a battery cell, a bus bar, and the sampling device according to any one of the foregoing embodiments, where the bus bar is disposed at an end of the battery cell and electrically connected to the battery cell, and the first sampling circuit board and the second sampling circuit board are respectively electrically connected to the bus bar and are used for sampling the battery cell.
The utility model discloses beneficial effect includes, for example: first sampling circuit board and second sampling circuit board are connected with the busbar electricity at the relative both ends of electric core respectively to can assemble alone, for example when first sampling circuit board is connected to the busbar, because do not be connected between second sampling circuit board and the first sampling circuit board, the second sampling circuit board can assemble freely, and does not receive dragging of first sampling circuit board. In this assembling process, when the first sampling circuit board is assembled to the bus bar, the second sampling circuit board can also be freely assembled to the bus bar at the other end, thereby facilitating the improvement of battery grouping efficiency and production efficiency. Further, this first sampling circuit board and second sampling circuit board are FFC or FPC, and its self also has good flexibility, can be in the assembling process crooked folding, are favorable to promoting assembly efficiency, can promote battery efficiency and production efficiency in groups promptly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exploded structure of the sampling device of FIG. 1;
FIG. 3 is a schematic diagram of an exploded view of the sampling device of FIG. 2;
FIG. 4 is a schematic structural diagram of the first sampling circuit board in FIG. 3;
FIG. 5 is a schematic view of another exploded structure of the sampling device of FIG. 1;
FIG. 6 is an exploded view of the sampling device of FIG. 5;
fig. 7 is a schematic structural diagram of the sampling circuit board in fig. 6.
Icon: 100-a battery module; 110-a sampling device; 111-a first sampling circuit board; 1111-a first sampling metal sheet; 1112-a first body; 1113-first branch; 112-a second sampling circuit board; 1121-connecting a circuit board; 1122-sample circuit board; 1123-a second hub; 1124-a second sampling metal sheet; 1125-a second body; 1126-second branch; 113-a first receptacle; 114-a connector; 115-a temperature sensor; 116-temperature sensor connecting circuit board; 117-pressure sensor; 118-pressure sensor connection circuit board; 120-electric core assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1, a battery module 100 including a sampling device 110 according to an embodiment of the present invention is shown, in which the sampling device 110 can be assembled conveniently, which is beneficial to improving battery grouping efficiency and production efficiency, and has a wide application prospect.
The battery module 100 can be applied to the field of new energy vehicles, such as new energy electric vehicles.
Optionally, the battery module 100 may include a battery core assembly 120, a bus bar, and a sampling device 110, where the battery core assembly 120 includes a plurality of battery cells, and the plurality of battery cells are sequentially arranged side by side. The bus bar is disposed at the end of the cell assembly 120 and electrically connected to the cell assembly 120, and the sampling device 110 is electrically connected to the bus bar, and is configured to sample each cell in the cell assembly 120 and transmit the sampled data to the battery management system.
Utilize sampling device 110 or battery module 100, realize the parameter at the inside measurement electric core of battery module 100 to the parameter data transmission to the battery management system that will gather, can solve or reduce the inside sampling circuit of battery module 100 complicacy, occupation space and fixed inconvenient problem, be favorable to optimizing the module inner space, improve battery efficiency in groups, production efficiency, and signal transmission is stable, the assembly and the detection of the sampling circuit of being convenient for have wide application prospect.
Referring to fig. 2 and fig. 3, in the embodiment of the present invention, the sampling device 110 includes a first sampling circuit board 111, a second sampling circuit board 112, a first connector 113 and a connector 114, where the first sampling circuit board 111 and the second sampling circuit board 112 are both FFC or FPC, the first sampling circuit board 111 is connected to the second sampling circuit board 112 in a pluggable manner through the first connector 113, the first sampling circuit board 111 and the second sampling circuit board 112 are used for being electrically connected to busbars at two ends of the battery module 100 respectively and sampling electric cores of the battery module 100, the first sampling circuit board 111 or the second sampling circuit board 112 is electrically connected to the connector 114, and the connector 114 is used for being electrically connected to a battery management system.
It is to be understood that the above-mentioned "both the first sampling circuit board 111 and the second sampling circuit board 112 are FFC or FPC" may include at least the following two cases: the first sampling circuit board 111 and the second sampling circuit board 112 are both FFCs; and the second is that the first sampling circuit board 111 and the second sampling circuit board 112 are both FPCs.
However, the above-mentioned "the first sampling circuit board 111 is connected to the second sampling circuit board 112 via the first connector 113 in a pluggable manner" includes at least the following two cases: first, a first connector 113 is arranged on the first sampling circuit board 111, and the second sampling circuit board 112 is connected with the first connector 113 in a plugging manner, so that the first sampling circuit board 111 is electrically connected with the second sampling circuit board 112; the second is that the first connector 113 is disposed on the second sampling circuit board 112, and the first sampling circuit board 111 is connected to the first connector 113 in a plugging manner, so that the first sampling circuit board 111 is electrically connected to the second sampling circuit board 112.
It is also understood that, in the embodiment of the present invention, the first sampling circuit board 111 may be electrically connected to the connector 114 and electrically connected to the battery management system through the connector 114, or the second sampling circuit board 112 may be electrically connected to the connector 114 and electrically connected to the battery management system through the connector 114. As shown in the figure, the second sampling circuit board 112 is electrically connected to the connector 114, and the cell parameters acquired by the first sampling circuit board 111 and the second sampling circuit board 112 may be both transmitted to the battery management system through the connector 114.
Alternatively, the first socket 113 may be a sheet socket.
It should be noted that the FFC is a short for Flexible Flat Cable, and is called a Flexible Flat Cable in chinese; the FPC is short for a Flexible Printed Circuit, and is named as a Flexible Circuit board in Chinese. The flexible printed circuit board FPC is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent performance, and has the characteristics of high wiring density, light weight, thin thickness and good bending property. The flexible flat cable FFC is a flat copper wire formed by pressing through an automatic equipment production line, and has the advantages of flexibility, free bending and folding, thin thickness, small volume, simple connection, convenience in disassembly, easiness in solving electromagnetic shielding (EMI) and the like. The FFC or FPC integrated circuit is stable in signal transmission in the power module, is suitable for low-voltage circuit design, and the inventor creatively applies the FFC or FPC integrated circuit to the internal wiring of the power battery module 100 and is used for sampling the battery core, so that the FFC or FPC integrated circuit has a very wide application prospect.
Further, it should also be understood that, when the sampling device 110 is applied to the battery module 100, the first sampling circuit board 111 and the second sampling circuit board 112 of the sampling device 110 are respectively electrically connected with the busbars of the battery module 100 and are used for sampling the cells. As shown, one of the first sampling circuit board 111 and the second sampling circuit board 112 of the sampling device 110 crosses the electric core from one end of the electric core and extends to the other end of the electric core, and then is electrically connected to the other of the first sampling circuit board 111 and the second sampling circuit board 112. For example, in the figure, the second sampling circuit board 112 extends from one end of the cell to the other end of the cell, and is electrically connected with the first sampling circuit board 111 at the other end of the cell.
Further, in the embodiment of the present invention, first sampling circuit board 111 and second sampling circuit board 112 all adopt FFC or FPC that have good flexibility, the embodiment of the present invention provides a sampling device 110 can improve the efficiency of assembling in groups, is favorable to improving the production efficiency of battery module 100, and also makes the assembly easier, simple, has wide application prospect.
It should be noted that, when the battery is assembled, the sampling device 110 according to the embodiment of the present invention may refer to the following steps:
step S100: the first sampling circuit board 111 is electrically connected to a bus bar at one end of the cell.
In step S100, the first sampling circuit board 111 may be soldered to a bus bar (metal bus bar) by means of laser welding to electrically connect the first sampling circuit board 111 with the bus bar. Because the busbar is connected with the electric core electricity, after first sampling circuit board 111 and busbar laser welding are accomplished, can sample the electric core through first sampling circuit board 111.
Step S200: and the second sampling circuit board 112 is electrically connected to the busbar at the other end of the cell.
Likewise, in step S200, the second sampling circuit board 112 and the bus bar may be connected by laser welding to electrically connect the second sampling circuit board 112 and the bus bar. The busbar is connected with electric core electricity, and after second sampling circuit and busbar laser welding accomplished, can be through second sampling circuit board 112 to electric core sampling.
Step S300: the second sampling circuit board 112 is electrically connected to the first sampling circuit board 111 by a first connector 113.
In this step S300, one end of the second sampling circuit board 112 has been laser welded to the bus bar at one end of the cell, and the other end thereof may extend along the cell to the first sampling circuit board 111, that is, the other end of the cell. Then, the first sampling circuit board 111 and the second sampling circuit board 112 are electrically connected by the first connector 113, so that signal transmission between the first sampling circuit board 111 and the second sampling circuit board 112 is realized.
Step S400: electrically connecting the second sampling circuit board 112 and the connector 114, and other components.
It should be noted that, in step S400, the connection of other components may include an electrical connection of the temperature sensor 115, an electrical connection of the pressure sensor 117, or other components for sampling the battery cells. When electrically connecting the second sampling circuit board 112 and the connector 114, a plugging manner may be adopted, and a laser welding manner may also be adopted, and the embodiment of the present invention is not limited to a specific connection manner.
It should be understood that, in the above-described assembling step, the first sampling circuit board 111 and the second sampling circuit board 112 can be assembled separately, that is, the first sampling circuit board 111 and the second sampling circuit board 112 can be assembled separately, for example, when the first sampling circuit board 111 is connected to a bus bar, the second sampling circuit board 112 can be assembled freely without being pulled by the first sampling circuit board 111 because there is no connection between the second sampling circuit board 112 and the first sampling circuit board 111. In this assembling process, when the first sampling circuit board 111 is assembled to the bus bar, the second sampling circuit board 112 can also be freely assembled to the bus bar at the other end. The other way around is that the second sampling circuit board 112 may be assembled on the busbar at one end of the cell first, and the second sampling circuit board 111 can be freely assembled on the busbar of the cell when assembled.
Further, the first sampling circuit board 111 and the second sampling circuit board 112 are both FFCs or FPCs, and have good flexibility, and can be bent and folded in the assembling process, which is beneficial to improving the assembling efficiency, i.e. improving the battery grouping efficiency and the production efficiency.
It should also be noted that, the order between the step S200 and the step S300 may be exchanged, that is, the first sampling circuit board 111 and the second sampling circuit board 112 are electrically connected through the first connector 113, and then the second sampling circuit board 112 is laser-welded to the bus bar at the other end of the electric core. Likewise, step S100 may be performed with priority: electrically connecting the first sampling circuit board 111 to a busbar at one end of the electric core, and then performing step S200: the second sampling circuit board 112 is electrically connected to the bus bar at the other end of the electrical core, or step S200 may be performed first, and step S100 may be performed later, that is, the second sampling circuit board 112 is electrically connected to the bus bar at one end of the electrical core first, and then the first sampling circuit board 111 is electrically connected to the bus bar at the other end of the electrical core. The first sampling circuit board 111 and the second sampling circuit board 112 can be assembled separately in the battery grouping assembly process, which is beneficial to improving the assembly efficiency.
Meanwhile, it should be noted that the present embodiment is only illustrative of possible assembly, and not limiting the assembly process. That is, other reasonable assembly sequences may be employed to assemble the sampling device 110 and battery assembly. That is, the above steps S100, S200, S300, and S400 are not limited to the order of assembly, and as described above, the steps S100, S200, S300, and S400 may be sequentially performed in the order in which they are installed, or the steps S200 and S400 may be performed preferentially, or other steps may be performed preferentially, or the steps S400 and S400 may be performed preferentially. In the above description, the present embodiment provides one of the possible assembly steps, and should not be considered as limiting the assembly sequence. The embodiment of the utility model provides a can realize the independent assembly of first sampling circuit board 111 and second sampling circuit board 112, be favorable to avoiding the mutual influence of first sampling circuit board 111 and second sampling circuit board 112 in the assembling process, improve the assembly efficiency of first sampling circuit board 111 and second sampling circuit board 112 to promote battery efficiency in groups and production efficiency. Meanwhile, the assembling steps are simpler and easy to realize.
Referring to fig. 4, in an alternative embodiment, at least one first sampling metal sheet 1111 is disposed on the first sampling circuit board 111, and the at least one first sampling metal sheet 1111 is used for being electrically connected to a bus bar and for sampling cells.
It should be understood that the at least one first sampling sheet metal 1111 corresponds to the cells, that is, the number of the first sampling sheet metal 1111 is the same as the number of the cells, and the first sampling sheet metal 1111 corresponds to the cells one by one, that is, each first sampling sheet metal corresponds to one cell. That is to say, can set up in the first sampling sheetmetal 1111 that this electric core quantity corresponds according to the quantity of electric core to sample each electric core, thereby be convenient for manage battery module 100 through battery management system.
Further, the first sampling circuit board 111 may include a first body 1112 and at least one first branch 1113, the at least one first branch 1113 is electrically connected to the first body 1112, and the at least one first sampling metal piece 1111 is disposed on the at least one first branch 1113 in a one-to-one correspondence.
It should be noted that the above-mentioned "at least one first sampling metal piece 1111 is disposed on at least one first branch 1113 in a one-to-one correspondence" means that the first sampling metal piece 1111 is connected to the first branch 1113 in a one-to-one correspondence, that is, the first branch 1113 is electrically connected to the bus through the first sampling metal piece 1111. Alternatively, the first sampling metal piece 1111 and the bus bar are connected by laser welding.
Alternatively, the first sampling metal piece 1111 may be a nickel piece, a copper piece, an aluminum piece, a nickel-plated copper piece, or the like.
Referring to fig. 5 and fig. 6, in an optional embodiment, the second sampling circuit board 112 may include a connection circuit board 1121, a sampling circuit board 1122, and a second plug connector 1123, where the connection circuit board 1121 and the sampling circuit board 1122 are both FFC or FPC, the sampling circuit board 1122 is opposite to the first sampling circuit board 111 and is connected to the connection circuit board 1121 through the second plug connector 1123 in a plug-pull manner, the connection circuit board 1121 is connected to the first sampling circuit board 111 through the first plug connector 113 in a plug-pull manner, and the sampling circuit board 1122 is used for electrically connecting to a busbar and sampling a battery cell.
That is to say, two ends of the connection circuit board 1121 are respectively electrically connected to the first sampling circuit board 111 and the sampling circuit board 1122 through the first plug-in connector 113 and the second plug-in connector 1123, and the sampling circuit board 1122 is opposite to the first sampling circuit board 111 and respectively correspondingly connected to the return bars at two ends of the electric core, so as to implement sampling of the electric core.
It should be understood that, in this embodiment, both the connection circuit board 1121 and the sampling circuit board 1122 are FFCs or FPCs, and "both the connection circuit board 1121 and the sampling circuit board 1122 are FFCs or FPCs" herein may include at least the following two cases: one is that both the connection circuit board 1121 and the sampling circuit board 1122 are FFCs; the second connection circuit board 1121 and the sampling circuit board 1122 are both FPCs.
The above-mentioned "the sampling circuit board 1122 is connected to the connection circuit board 1121 by the second connector 1123 in a pluggable manner" may include at least the following two cases: one is that the second plug connector 1123 is disposed on the sampling circuit board 1122, and the connection circuit board 1121 is connected to the second plug connector 1123 by plugging, so that the connection circuit board 1121 is electrically connected to the sampling circuit board 1122; the second is that the second plug connector 1123 is disposed on the connection circuit board 1121, and the sampling circuit board 1122 is connected to the second plug connector 1123 by plugging, so that the sampling circuit board 1122 is electrically connected to the connection circuit board 1121. Of course, the sampling circuit board 1122 and the connection circuit board 1121 may be both connected to the second connector 1123 in a pluggable manner, so as to electrically connect the sampling circuit board 1122 and the connection circuit board 1121.
In this embodiment, the FFC or FPC having good flexibility is used for both the connection circuit board 1121 and the sampling circuit board 1122, so that the assembly efficiency can be further improved, the production efficiency of the battery module 100 can be improved, and the assembly can be easier and simpler.
Alternatively, the second hub 1123 may be a sheet hub.
Referring to fig. 7, further, at least one second sampling metal sheet 1124 may be disposed on the sampling circuit board 1122, and the at least one second sampling metal sheet 1124 is used for electrically connecting to the bus bar and for sampling the cells.
It should be understood that the at least one second sampling metal sheet 1124 corresponds to the cells, that is, the number of the second sampling metal sheets 1124 is the same as the number of the cells, and the second sampling metal sheets 1124 correspond to the cells one to one, that is, the second sampling metal sheets 1124 corresponding to the number of the cells may be set according to the number of the cells, so as to sample each cell, thereby facilitating the management of the battery module 100 through the battery management system.
It should be noted that, in the scheme in which at least one second sampling metal piece 1124 is provided, the first sampling circuit board 111 may also be provided with at least one first sampling metal piece 1111. It should be understood that the number of the first sampling patches 1111 is identical to the number of the second sampling patches 1124, and is opposite. That is, for a certain cell, the first sampling metal piece 1111 is connected to the bus bar at one end, and the second sampling metal piece 1124 is connected to the bus bar at the other end.
Still further, the second sampling circuit board 112 may include a second body 1125 and at least one second branch 1126, the at least one second branch 1126 being electrically connected to the second body 1125, the at least one second sampling metal piece 1124 being disposed on the at least one second branch 1126 in a one-to-one correspondence.
It should be noted that the above-mentioned "at least one second sampling metal piece 1124 is disposed on at least one second branch 1126 in a one-to-one correspondence" means that the second sampling metal piece 1124 is connected to the second branch 1126 in a one-to-one correspondence, that is, the second branch 1126 is electrically connected to the bus bar through the second sampling metal piece 1124. Alternatively, the second sampling metal piece 1124 and the bus bar are connected by means of laser welding.
Alternatively, the second sampling metal piece 1124 may be a nickel piece, a copper piece, an aluminum piece, a nickel-plated copper piece, or the like. Meanwhile, it is also to be noted that the first sampling metal piece 1111 and the second sampling metal piece 1124 may be any one of a nickel piece, a copper piece, an aluminum piece, a nickel-plated copper piece, and the like.
That is, when the first sampling metal piece 1111 is a nickel piece, the second sampling metal piece 1124 may be any one of a nickel piece, a copper piece, an aluminum piece, a nickel-plated copper piece, and the like, and may be a nickel piece, a copper piece, an aluminum piece, and the like.
Similarly, when the second sampling metal piece 1124 is a nickel piece, the first sampling metal piece 1111 may be any one of a nickel piece, a copper piece, an aluminum piece, a nickel-plated copper piece, and the like, and may be a nickel piece, a copper piece, an aluminum piece, and the like.
Preferably, the first sampling metal piece 1111 and the second sampling metal piece 1124 are metal pieces made of the same material, that is, when the first sampling metal piece 1111 is a nickel piece, the second sampling metal piece 1124 is also a nickel piece.
In an alternative embodiment, the first and second sampling circuit boards 111 and 112 may be manufactured from the same FFC or FPC.
It should be noted that the first sampling circuit board 111 and the second sampling circuit board 112 are manufactured by the same FFC or FPC, and optionally, the manufactured FFC or FPC may be cut into the first sampling circuit board 111 and the second sampling circuit board 112, and then the first sampling circuit board 111 and the second sampling circuit board 112 are connected by the first connector 113. Because the same FFC or FPC is manufactured, the manufacturing process of the sampling device 110 and the battery module 100 is simpler and more convenient, the utilization rate of the FFC or FPC can be improved, and the material cost is saved.
By manufacturing the first sampling circuit board 111 and the second sampling circuit board 112 by cutting off an FFC or FPC, on one hand, the material utilization rate can be improved, and the manufacture is simpler and more convenient; on the other hand, the first sampling circuit board 111 and the second sampling circuit board 112 are independent of each other, and can be flexibly assembled in the battery grouping process, so that the assembly is facilitated, and the grouping efficiency and the production efficiency are improved.
Further, in a case where the second sampling circuit board 112 includes the connection circuit board 1121, the sampling circuit board 1122, and the second connector 1123, the connection circuit board 1121 and the sampling circuit board 1122 may be manufactured by the same FFC or FPC as the first sampling circuit board 111.
That is, in this scheme, the FFC or FPC is first divided into two segments, one of which is divided into the first sampling circuit board 111, and the other of which is divided into the connection circuit board 1121 and the sampling circuit board 1122. At this time, the sampling device 110 can be divided into three segments: when the first sampling circuit board 111, the connection circuit board 1121, and the sampling circuit board 1122 are assembled in a group, the first sampling circuit board 111, the connection circuit board 1121, and the sampling circuit board 1122 can be assembled relatively independently, so that the connection of the circuit boards is not interfered with each other, thereby improving the grouping efficiency and the production efficiency.
In an optional embodiment, the sampling device 110 may further include a temperature sensor 115 and a temperature sensor connection circuit board 116 electrically connected to each other, where the temperature sensor connection circuit board 116 is an FFC or an FPC and is electrically connected to the connector 114, and the temperature sensor 115 is configured to be disposed on the surface of the battery cell.
Alternatively, the temperature sensor 115 may be an NTC sensor (Negative temperature coefficient) which is fixed to the surface of the battery cell by a heat conductive adhesive.
Further, the temperature sensor 115 may be adhered to the upper surface of the battery cell.
Alternatively, in the embodiment of the present invention, the temperature sensor connection circuit board 116 may be substantially T-shaped, and the number of the temperature sensors 115 is two, and the two temperature sensors are respectively disposed on two ends of the T-shaped temperature sensor connection circuit board 116. The temperatures of different positions of the battery cell can be detected through the two temperature sensors 115, so that the measurement error is reduced, and the accuracy of temperature detection is improved. Of course, in other embodiments of the present invention, the number of the temperature sensors 115 may be other, such as three, and the temperature sensors 115 are electrically connected to the connector 114 through the FFC or the FPC, and transmit the collected temperature data to the battery management system through the connector 114.
It should be noted that the embodiment of the present invention does not specifically limit the number of the temperature sensors 115, i.e. the number of the temperature sensors 115 can be set according to the actual sampling requirement.
In an optional embodiment, the sampling device 110 may further include a pressure sensor 117 and a pressure sensor connection circuit board 118 electrically connected to each other, where the pressure sensor connection circuit board 118 is an FFC or an FPC and is electrically connected to the connector 114, and the pressure sensor 117 is configured to be disposed on the surface of the battery cell.
Alternatively, the pressure sensor 117 may employ a sheet pressure sensor 117. The pressure sensor 117 may be bonded to a surface of the cell, such as a side surface of the cell. The pressure sensor 117 may be bonded between any two adjacent battery cells, for example, the surface of the battery cell located at the center is connected to the side surfaces of the two battery cells by bonding, and the pressure sensor 117 may also be bonded to the battery cells located at the head and tail positions (i.e., the surface of the battery cell located at the outermost side).
It should be understood that, in the embodiment of the present invention, the type and number of the pressure sensors 117 are not limited, and the pressure sensors 117 are electrically connected to the connector 114 through the pressure sensor connection circuit board 118 to transmit the sampled pressure signal to the battery management system through the connector 114. The pressure sensor connection circuit board 118 is an FFC or FPC for wiring and connection.
Meanwhile, it should be noted that in the solution including the temperature sensor 115 and the pressure sensor 117, the temperature sensor 115 and the pressure sensor 117 may be connected to any cell in the cell assembly 120, that is, the temperature sensor 115 and the pressure sensor 117 may be adhered to any cell surface in the cell assembly 120: the temperature sensor 115 and the pressure sensor 117 may be bonded to different surfaces of the same battery cell, or may be bonded to surfaces of different battery cells.
Referring to fig. 1 to fig. 7, to sum up, the embodiment of the present invention provides a sampling device 110 and a battery module 100 including the sampling device 110: the first sampling circuit board 111 and the second sampling circuit board 112 are electrically connected to busbars at two opposite ends of the electric core, respectively, and can be assembled separately, for example, when the first sampling circuit board 111 is connected to the busbars, the second sampling circuit board 112 can be assembled freely without being pulled by the first sampling circuit board 111 because the second sampling circuit board 112 is not connected to the first sampling circuit board 111. In this assembling process, when the first sampling circuit board 111 is assembled to the bus bar, the second sampling circuit board 112 can also be freely assembled to the bus bar at the other end, thereby contributing to the improvement of the battery grouping efficiency and the production efficiency. Further, the first sampling circuit board 111 and the second sampling circuit board 112 are both FFCs or FPCs, and have good flexibility, and can be bent and folded in the assembling process, which is beneficial to improving the assembling efficiency, i.e. improving the battery grouping efficiency and the production efficiency.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a sampling device for battery module, its characterized in that, sampling device includes first sampling circuit board, second sampling circuit board, first connector and connector, first sampling circuit board with second sampling circuit board is FFC or FPC, first sampling circuit board pass through first connector with second sampling circuit board pluggable ground is connected, first sampling circuit board with second sampling circuit board be used for respectively with the busbar electricity at battery module both ends is connected, and be used for right the electricity core sampling of battery module, first sampling circuit board or second sampling circuit board with the connector electricity is connected, the connector is used for being connected with battery management system electricity.
2. The sampling device of claim 1, wherein the first sampling circuit board has at least one first sampling metal sheet disposed thereon, the at least one first sampling metal sheet being configured to be electrically connected to the busbar and to sample the cells.
3. The sampling device of claim 2, wherein the first sampling circuit board comprises a first body and at least one first branch, the at least one first branch being electrically connected to the first body, the at least one first sampling metal sheet being disposed on the at least one first branch in a one-to-one correspondence.
4. The sampling device of claim 1, wherein the second sampling circuit board comprises a connection circuit board, a sampling circuit board and a second connector, the connection circuit board and the sampling circuit board are both FFC or FPC, the sampling circuit board is opposite to the first sampling circuit board and is connected with the connection circuit board in a pluggable manner through the second connector, the connection circuit board is connected with the first sampling circuit board in a pluggable manner through the first connector, and the sampling circuit board is used for being electrically connected with the busbar and sampling the battery cells.
5. The sampling device of claim 4, wherein at least one second sampling metal sheet is disposed on the sampling circuit board, and the at least one second sampling metal sheet is configured to be electrically connected to the bus bar and configured to sample the cells.
6. The sampling device of claim 5, wherein the second sampling circuit board comprises a second body and at least one second branch, the at least one second branch being electrically connected to the second body, the at least one second sampling metal sheet being disposed on the at least one second branch in a one-to-one correspondence.
7. The sampling device of any one of claims 1-6, wherein the first sampling circuit board and the second sampling circuit board are manufactured from the same FFC or FPC.
8. The sampling device of any one of claims 1-6, further comprising a temperature sensor and a temperature sensor connection circuit board electrically connected to each other, wherein the temperature sensor connection circuit board is FFC or FPC and is electrically connected to the connector, and the temperature sensor is configured to be disposed on a surface of the battery cell.
9. The sampling device of any one of claims 1-6, further comprising a pressure sensor and a pressure sensor connection circuit board electrically connected to each other, wherein the pressure sensor connection circuit board is FFC or FPC and is electrically connected to the connector, and wherein the pressure sensor is configured to be disposed on a surface of the cell.
10. A battery module, comprising a battery core, a bus bar and the sampling device as claimed in any one of claims 1 to 9, wherein the bus bar is disposed at an end of the battery core and electrically connected to the battery core, and the first sampling circuit board and the second sampling circuit board are respectively electrically connected to the bus bar and used for sampling the battery core.
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| CN202020231662.0U CN211480176U (en) | 2020-02-28 | 2020-02-28 | Sampling device and battery module |
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| CN202020231662.0U CN211480176U (en) | 2020-02-28 | 2020-02-28 | Sampling device and battery module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271368A (en) * | 2020-10-12 | 2021-01-26 | 东风时代(武汉)电池系统有限公司 | High energy density power battery package integrated configuration and new energy automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271368A (en) * | 2020-10-12 | 2021-01-26 | 东风时代(武汉)电池系统有限公司 | High energy density power battery package integrated configuration and new energy automobile |
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