Conductive module
By designing flexible wiring components and bending areas in the conductive module, the configuration matching problem of the conductive module when the connector plug-in and unplugging direction is changed, and flexible response and cost control are achieved.
Patent Information
- Application Number
- CN202410877892.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-07-03
- Filing Date
- 2024-07-02
- Publication Date
- 2025-01-03
AI Technical Summary
The existing conductive module cannot adapt to the plug-and-release direction between the connector and the opponent's connector changes, resulting in insufficient matching of the connector configuration.
A wiring component with flexibility and flat formation is designed, including a wiring body, a wiring cross body and a wiring branch, and the plug-and-removal direction of the connector is changed through the bent area to adapt to the configuration changes of the opponent's connector.
This enables flexible response when the connector plug-in and unplugging direction changes, ensuring that the connector is configured in the appropriate position, reducing the risk of increased costs and reduced yield.
Smart Images
Figure CN119253203A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a conductive module. Background Art
[0002] The conductive module is a wiring module that electrically connects a battery module composed of a plurality of battery cells and a battery monitoring unit that monitors the battery status of the battery cells. The conductive module includes: a wiring component that contains a circuit conductor provided for each bus bar connected to one or a pair of battery cells of the battery module; and a connector that electrically connects each circuit conductor to the battery monitoring unit. The conductive module is disclosed in, for example, the following patent documents 1 and 2.
[0003] Prior art literature
[0004] Patent Literature
[0005] Patent Document 1: Japanese Patent Application Publication No. 2011-192612
[0006] Patent Document 2: Japanese Patent Application Publication No. 2012-181442 Summary of the invention
[0007] Problems to be solved by the invention
[0008] However, in the conductive module, the connector needs to be arranged to match the position of the other connector that changes depending on the installation location of the battery monitoring unit, etc. For example, the conductive module of Patent Document 2 can change the position of the connector along the plugging and unplugging direction relative to the other connector. However, when the plugging and unplugging direction between the connector and the other connector changes, the conductive module cannot cope with the change.
[0009] Therefore, an object of the present invention is to provide a conductive module capable of installing a connector at an appropriate position matching the arrangement of a counterpart connector.
[0010] Means for solving problems
[0011] The conductive module of the present invention is characterized in that it has a wiring component and a connector, wherein the wiring component electrically connects a battery module composed of a plurality of battery cells and a battery monitoring unit that monitors the battery status of the battery cells, and the wiring component has: a wiring main body, wherein the wiring main body contains a circuit conductor corresponding to a bus bar connected to each electrode terminal of one of the battery cells or a pair of the battery cells in the battery module, and the wiring main body is flexible and flatly formed, parallel to the arrangement direction of the plurality of battery cells; a wiring cross body, wherein the wiring cross body is connected to one end of the wiring main body in the arrangement direction on the same plane at an intersection with the arrangement direction, and protrudes more than a side end of the wiring main body along the arrangement direction; and a wiring branch body, wherein the wiring branch body is connected to the plurality of battery cells. Each of the bus bars branches off from one side end of the wiring body, and the circuit conductor comprises: a circuit body, which extends along the arrangement direction in the wiring body; a circuit intersection, which is connected to one end of the circuit body at the one end of the wiring body and extends in the crossing direction of the wiring intersection in the middle of the wiring path, and is electrically connected to the battery monitoring unit via the connector installed at the end of the wiring intersection before the extension; and a circuit branch body, which is introduced into the wiring branch body from the other end of the circuit body and is electrically connected to the bus bar, and the wiring component bends the bending area set at the one end of the wiring body, thereby changing the plug-in and unplugging direction of the connector relative to the other connector.
[0012] Effects of the Invention
[0013] The conductive module according to the present invention can easily cope with changes in the insertion and removal directions of the connector, and thus the connector can be installed at an appropriate position that matches the arrangement of the counterpart connector. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 1 is a plan view showing a conductive module according to an embodiment.
[0015] Figure 2 This is an enlarged view showing one end of the conductive module according to the embodiment.
[0016] Figure 3 This is a perspective view illustrating a battery module.
[0017] Figure 4 This is an enlarged view showing one bent end of the conductive module according to the embodiment.
[0018] Figure 5 This is an enlarged view of one bent end of the conductive module according to the embodiment as viewed from the back side.
[0019] Figure 6 It is a top view showing a conductive module according to a modified example.
[0020] Figure 7 This is an enlarged view showing one end of a conductive module according to a modified example.
[0021] Figure 8 This is an enlarged view showing one bent end of the conductive module according to a modified example.
[0022] Description of Reference Numerals
[0023] 1.2 Conductive module
[0024] 10 Busbar
[0025] 20, 120 wiring components
[0026] 21, 121 wiring main body
[0027] 21a, 121a end
[0028] 21b, 121b one side
[0029] 21d, 121d bending area
[0030] 22, 122 wiring cross body
[0031] 23, 123 Wiring branch
[0032] 30, 130 circuit conductor
[0033] 31, 131 Circuit body
[0034] 32, 132 Circuit crossover
[0035] 33, 133 loop branch
[0036] 40 Connectors
[0037] BC Battery Cell
[0038] BC2 electrode terminal
[0039] BM Battery Module DETAILED DESCRIPTION
[0040] Hereinafter, an embodiment of the conductive module according to the present invention will be described in detail based on the drawings. However, the present invention is not limited to this embodiment.
[0041] [Implementation Method]
[0042] based on Figures 1 to 5 One embodiment of the conductive module according to the present invention will be described.
[0043] Figure 1 and Figure 2 Reference numeral 1 denotes a conductive module of the present embodiment. The conductive module 1 is assembled in a battery module BM ( Figure 3 ), so that the battery module BM is electrically connected to, for example, a battery monitoring unit (not shown), so that the battery monitoring unit monitors the battery state of the battery cell BC. The conductive module 1 and the battery module BM together constitute a battery pack BP ( Figures 1 to 3 The battery pack BP is mounted on, for example, a vehicle (BEV: Battery Electric Vehicle, HEV: Hybrid Electric Vehicle, etc.) having a rotating machine as a driving source, and is used to supply power to the rotating machine.
[0044] The battery cell BC includes a cell body BC1, a positive electrode terminal BC2 and a negative electrode terminal BC3 ( Figure 3 ). In the battery cell BC shown here, the cell body BC1 is formed into a rectangular parallelepiped having 6 outer wall surfaces, and an electrode terminal BC2 of a positive pole and an electrode terminal BC2 of a negative pole are provided on one outer wall surface among the 6 outer wall surfaces of the cell body BC1. Moreover, in the plurality of battery cells BC constituting the battery module BM, the cell bodies BC1 adjacent in the arrangement direction thereof are arranged in such a manner that one outer wall surface faces each other. Therefore, in the battery cell BC shown here, an electrode terminal BC2 of a positive pole and an electrode terminal BC2 of a negative pole are provided on one of the 4 outer wall surfaces along the arrangement direction of the plurality of battery cells BC. In one outer wall surface of the cell body BC1, an electrode terminal BC2 of a positive pole is arranged at one end in an orthogonal direction orthogonal to the arrangement direction of the plurality of battery cells BC, and an electrode terminal BC2 of a negative pole is arranged at the other end in the orthogonal direction.
[0045] The positive electrode terminal BC2 and the negative electrode terminal BC2 may be, for example, a plate-shaped or rectangular-shaped terminal provided on an outer wall surface of the unit body BC1, or a column-shaped pole protruding from an outer wall surface of the unit body BC1. When the electrode terminal BC2 is in the shape of a plate or a rectangular parallelepiped, a bus bar to be described later is physically and electrically connected to the electrode terminal BC2 by welding or the like. In addition, when the electrode terminal BC2 is in the shape of a pole, an external threaded portion is provided on the electrode terminal BC2, so that the electrode terminal BC2 is inserted into a through hole of the bus bar to be described later, and an internal threaded component (not shown) is screwed with the external threaded portion of the electrode terminal BC2, so that the bus bar to be described later is physically and electrically connected to the electrode terminal BC2.
[0046] In the battery module BM, a bus bar described later is connected to one or a pair of battery cells BC. In the battery module BM, one electrode terminal BC2 and another electrode terminal BC2 of the plurality of battery cells BC are arranged in the arrangement direction of the plurality of battery cells BC, respectively. In the battery module BM, a pair of electrode terminals BC2 adjacent in the arrangement direction are electrically connected to each of the pair of electrode terminals BC2 through a bus bar described later. In addition, in the battery module BM, a pair of other electrode terminals BC2 adjacent in the arrangement direction are electrically connected to each of the pair of other electrode terminals BC2 through a bus bar described later. A pair of electrode terminals BC2 adjacent in the arrangement direction may be one of which is a positive electrode and the other of which is a negative electrode, or both of which may be positive electrodes or negative electrodes. Here, the plurality of battery cells BC are arranged in such a manner that one of the pair of electrode terminals BC2 adjacent in the arrangement direction becomes a positive electrode and the other becomes a negative electrode. In the battery module BM, a bus bar described later is physically and electrically connected to one electrode terminal BC2 serving as a common positive electrode, and a bus bar described later is physically and electrically connected to one electrode terminal BC2 serving as a common negative electrode.
[0047] Figure 3 The busbar 10 shown in the example is a metal plate-shaped conductive component, for example, formed by stamping with a metal plate as a base material. Here, taking the plate-shaped electrode terminal BC2 as an example, the busbar 10 is physically and electrically connected to the electrode terminal BC2 by welding or the like. A plurality of busbars 10 can be provided in the battery module BM or in the conductive module 1.
[0048] The conductive module 1 includes a wiring member 20 for electrically connecting the battery module BM and the battery monitoring unit. The wiring member 20 includes a circuit conductor 30 corresponding to each bus bar 10 and is flexible and flat. Figure 1 and Figure 2 Furthermore, the conductive module 1 includes a connector 40 ( Figure 1 and Figure 2 ). In order to electrically connect the wiring member 20 to the battery monitoring unit, the connector 40 is engaged and connected to a counterpart connector (not shown) on the battery monitoring unit side.
[0049] Specifically, the wiring component 20 shown here is a flexible printed circuit board, and the circuit conductor 30 is formed of a conductor pattern such as copper foil. The wiring component 20 has various films (base film, cover film) formed flatly with flexibility as an insulating film, and a conductor pattern is formed on at least one of the various films (base film). The conductor pattern (circuit conductor 30) is wrapped in the insulating film, for example, so that a portion that becomes an electrical contact with other components is exposed.
[0050] The wiring component 20 includes: a wiring main body 21, which is parallel to the arrangement direction of the plurality of battery cells BC; a wiring cross body 22, which crosses the arrangement direction and is connected to one end 21a of the wiring main body 21 in the arrangement direction of the plurality of battery cells BC on the same plane, and protrudes from one side end 21b of the wiring main body 21 along the arrangement direction of the plurality of battery cells BC; and a wiring branch body 23, which branches from one side end 21b of the wiring main body 21 for each of the plurality of bus bars 10 ( Figure 1 and Figure 2 ). In addition, hereinafter, the arrangement direction of the plurality of battery cells BC is simply referred to as the arrangement direction.
[0051] In the wiring member 20 of this example, the plurality of wiring branch bodies 23 are arranged on the same plane as the wiring main body 21 and the wiring intersection body 22 .
[0052] The circuit conductor 30 includes: a circuit main body 31 extending in the arrangement direction through the wiring main body 21; a circuit intersection 32 connected to one end of the circuit main body 31 at one end 21a of the wiring main body 21, and extending in the crossing direction of the wiring intersection 22 in the middle of the wiring path, and electrically connected to the battery monitoring unit via a connector 40 installed at the end of the wiring intersection 22 before the extension; and a circuit branch 33 introduced from the other end of the circuit main body 31 to the wiring branch 23 and electrically connected to the bus bar 10 ( Figure 2 ).
[0053] In the wiring body 21, between one side end 21b and the other side end 21c, the circuit bodies 31 of all the circuit conductors 30 corresponding to each bus bar 10 are arranged in parallel along the arrangement direction with intervals between each other ( Figure 2 In the wiring intersection 22, the circuit intersections 32 of all the circuit conductors 30 are arranged in parallel along the intersection direction with intervals between each other ( Figure 2 The wiring cross body 22 shown here crosses in a direction perpendicular to the arrangement direction. The connector 40 is installed at the end of the wiring cross body 22 with the crossing direction of the wiring cross body 22 as the insertion and removal direction relative to the other connector ( Figure 2 In the wiring branch body 23, a circuit branch body 33 of the circuit conductor 30 is arranged corresponding to each bus bar 10 ( Figure 2 ). In the wiring branch body 23 , a portion of the circuit branch body 33 exposed from the insulating coating is indirectly connected to the bus bar 10 via a terminal fitting (not shown) or directly connected to the bus bar 10 .
[0054] Thus, in the wiring component 20 of the present embodiment, the wiring main body 21, the wiring cross body 22, and the plurality of wiring branch bodies 23 are arranged on the same plane. Furthermore, in the wiring component 20, the wiring cross body 22 having the connector 40 mounted at the end thereof is made to intersect (orthogonally in this case) the arrangement direction and protrude from one side end 21b of the wiring main body 21, and all the wiring branch bodies 23 corresponding to each bus bar 10 are branched from the one side end 21b of the wiring main body 21. Therefore, in the wiring component 20, when the number of circuits (i.e., circuit conductors 30) is increased, the wiring main body 21 is made larger in the direction orthogonal to the arrangement direction (i.e., the width direction between one side end 21b and the other side end 21c), and the wiring cross body 22 is made larger in the direction orthogonal to the intersection direction. When the circuit is increased, in the wiring component 20 of the present embodiment, the wiring body 21 can be enlarged in the width direction by pulling one side end 21b away from the other side end 21c, and the wiring cross body 22 can be enlarged toward the side where the wiring branch body 23 exists, thereby preventing the overall size from expanding or suppressing the overall size expansion rate to a lower level.
[0055] However, in the conductive module 1, conductor patterns (circuit conductors 30) of a plurality of wiring components 20 are formed on a laminate of various films (base film, cover film) larger than the wiring component 20, and the laminate is cut for each wiring component 20, and a plurality of wiring components 20 are cut out from the laminate. The wiring component 20 of the present embodiment can prevent the overall size from being enlarged or can suppress the overall size enlargement rate to be low even if the number of circuits is increased, so it is possible to suppress the reduction in yield when cutting out from the laminate.
[0056] Here, the wiring member 20 is provided with a bending area 21d at one end 21a of the wiring body 21, and the bending area 21d is bent to change the insertion and removal direction of the connector 40 relative to the other connector ( Figure 1 , Figure 2 , Figure 4 and Figure 5 For example, the connector 40 can bend the bending area 21d twice to change the plugging and unplugging direction from the crossing direction of the wiring crossing body 22 to the arrangement direction ( Figure 4 and Figure 5 ). The connector 40 shown here is configured such that the bending region 21d is bent twice and arranged on the extension line of the wiring body 21 in the arrangement direction, and the insertion and removal direction is changed from the intersecting direction to the arrangement direction.
[0057] As described above, the conductive module 1 of this embodiment can easily cope with the change of the plugging and unplugging direction of the connector 40, so the connector 40 can be set at an appropriate position matching the configuration of the counterpart connector. Furthermore, the conductive module 1 of this embodiment can suppress the reduction of the yield of the wiring member 20 when adding circuits, so the increase in cost can be suppressed to a low level, or the cost can be reduced.
[0058] [Modifications]
[0059] The conductive module 2 of this modified example is a conductive module in which the wiring member 20 is replaced with the following wiring member 120 in the conductive module 1 of the above-mentioned embodiment ( Figure 6 and Figure 7 ).
[0060] The wiring component 120 of this modification example is similar to the wiring component 20 of the embodiment, and contains a circuit conductor 130 corresponding to each bus bar 10, and is flexible and flat. The wiring component 120 has a wiring main body 121, a wiring cross body 122, and a plurality of wiring branch bodies 123 ( Figure 6 and Figure 7 ). The circuit conductor 130 has a circuit main body 131, a circuit intersection 132, and a circuit branch 133 similar to the circuit conductor 30 of the embodiment ( Figure 7 ).
[0061] The wiring main body 121 is parallel to the arrangement direction similarly to the wiring main body 21 of the embodiment, and the circuit main body 131 is extended in the arrangement direction ( Figure 6 and Figure 7 ). In addition, in the wiring body 121, between one side end 121b and the other side end 121c, the circuit bodies 131 of all the circuit conductors 130 corresponding to each bus bar 10 are arranged in parallel with each other along the arrangement direction at intervals ( Figure 6 and Figure 7 ).
[0062] The wiring cross body 122 is similar to the wiring cross body 22 of the embodiment, and is connected to one end 121a of the wiring main body 21 in the arrangement direction on the same plane, and protrudes from one side end 121b of the wiring main body 121 ( Figure 6 and Figure 7 The circuit intersection 132 is connected to one end of the circuit body 131 in one end 121a of the wiring body 121, similarly to the circuit intersection 32 of the embodiment, and extends in the crossing direction of the wiring intersection 122 in the middle of the wiring path, and is electrically connected to the battery monitoring unit via the connector 40 installed at the end of the wiring intersection 122 before the extension ( Figure 6and Figure 7 In the wiring cross body 122, all the circuit cross bodies 132 corresponding to each bus bar 10 are arranged in parallel along the cross direction with intervals between them. The connector 40 is installed at the end of the wiring cross body 122 with the cross direction of the wiring cross body 122 as the plugging and unplugging direction ( Figure 6 and Figure 7 However, the wiring intersection body 122 of this modification example crosses in a direction tilted relative to the arrangement direction ( Figure 6 and Figure 7 ).
[0063] The wiring branch body 123 branches from one side end 121b of the wiring main body 121 in the same manner as the wiring branch body 23 of the embodiment. Figure 6 and Figure 7 ). Similar to the circuit branch body 33 of the embodiment, the circuit branch body 133 is introduced from the other end of the circuit main body 131 to the wiring branch body 123 and is electrically connected to the bus bar 10 ( Figure 7 In the wiring branch body 123, a circuit branch body 133 is arranged corresponding to each bus bar 10 ( Figure 7 ). In addition, in the wiring branch body 123 , the portion of the circuit branch body 133 exposed from the insulating film is indirectly connected to the bus bar 10 via a terminal fitting (not shown) or directly connected to the bus bar 10 .
[0064] Thus, in the wiring component 120 of the present modification, the wiring main body 121, the wiring cross body 122, and the plurality of wiring branch bodies 123 are arranged on the same plane, similarly to the wiring component 20 of the embodiment. Also, in the wiring component 120, similarly to the wiring component 20 of the embodiment, the wiring cross body 122 having the connector 40 mounted at the end thereof is made to cross the arrangement direction (here, inclined relative to the arrangement direction) and protrude from one side end 121b of the wiring main body 121, and all the wiring branch bodies 123 corresponding to each bus bar 10 branch out from one side end 121b of the wiring main body 121. Therefore, in the wiring component 120, similarly to the wiring component 20 of the embodiment, when adding a circuit (i.e., the circuit conductor 130), the wiring main body 121 is enlarged in the direction orthogonal to the arrangement direction (i.e., the width direction between one side end 121b and the other side end 121c), and the wiring cross body 122 is enlarged in the direction orthogonal to the crossing direction. When the circuit is increased, in the wiring component 120 of this modification, as in the wiring component 20 of the embodiment, the wiring main body 121 can be enlarged in the width direction by pulling one side end 121b away from the other side end 121c, and the wiring cross body 122 can be enlarged toward the side where the wiring branch body 123 exists, so that the overall body size can be suppressed to a low enlargement rate. Therefore, even if the circuit is increased, the wiring component 120 of this modification can suppress the reduction of the yield rate when cutting out from the laminated body, as in the wiring component 20 of the embodiment.
[0065] The wiring component 120 of this modification is the same as the wiring component 20 of the embodiment. A bending area 121d is provided at one end 121a of the wiring body 121. The bending area 121d is bent to change the insertion and removal direction of the connector 40 relative to the other connector ( Figures 6 to 8 For example, the connector 40 can bend the bending area 121d twice in the same manner as in the embodiment to change the plugging and unplugging direction from the crossing direction of the wiring crossing body 122 to the arrangement direction ( Figure 8 The connector 40 shown here is arranged on the extension line of the wiring body 121 in the arrangement direction by bending the bending area 121d twice, thereby changing the insertion and removal direction from the intersecting direction to the arrangement direction.
[0066] As described above, the conductive module 2 of this modification example can easily cope with the change of the plugging and unplugging direction of the connector 40, similarly to the conductive module 1 of the embodiment, so that the connector 40 can be provided at an appropriate position matching the configuration of the other connector. Furthermore, the conductive module 2 of this modification example can suppress the reduction of the yield of the wiring member 120 when adding circuits, similarly to the conductive module 1 of the embodiment, so that the increase in cost can be suppressed to a low level, or the cost can be reduced.
Claims
1. A conductive module, characterized in that: A wiring member and a connector are provided, wherein the wiring member electrically connects a battery module composed of a plurality of battery cells arranged therein and a battery monitoring unit for monitoring the battery status of the battery cells. The wiring component comprises: a wiring main body, wherein a circuit conductor corresponding to each bus bar is enclosed in the wiring main body, the bus bar is connected to the electrode terminal of one of the battery cells or a pair of the battery cells of the battery module, and the wiring main body is flexible and flatly formed, and is parallel along the arrangement direction of the plurality of battery cells; a wiring cross body, wherein the wiring cross body is connected to one end of the wiring main body in the arrangement direction on the same plane in a manner intersecting the arrangement direction, and protrudes more than one side end of the wiring main body along the arrangement direction; and a wiring branch body branched from the one side end of the wiring main body for each of the plurality of bus bars, The circuit conductor comprises: a circuit main body extending along the arrangement direction in the wiring main body; a circuit intersection body connected to one end of the circuit main body at the one end of the wiring main body and extending in a crossing direction of the wiring intersection body midway along a wiring path, and electrically connected to the battery monitoring unit via the connector mounted to the end of the wiring intersection body before the extension; and a circuit branch body, the circuit branch body being introduced from the other end of the circuit main body into the wiring branch body and being electrically connected to the bus bar, The wiring member bends a bending area provided at the one end of the wiring body, thereby changing the insertion and removal direction of the connector relative to the other connector.
2. The conductive module according to claim 1, characterized in that: The wiring intersection body crosses in a direction orthogonal to the arrangement direction. The connector is mounted on the end of the wiring intersection body with the intersection direction of the wiring intersection body as the plugging and unplugging direction, and the plugging and unplugging direction is changed from the intersection direction to the arrangement direction by bending the bending region twice.
3. The conductive module according to claim 1, characterized in that: The wiring intersection body crosses in a direction tilted relative to the arrangement direction, The connector is mounted on the end of the wiring intersection body with the intersection direction of the wiring intersection body as the plugging and unplugging direction, and the plugging and unplugging direction is changed from the intersection direction to the arrangement direction by bending the bending region twice.
4. The conductive module according to claim 2 or 3, characterized in that: The connector is arranged on an extension line of the wiring body in the arrangement direction by bending the bending region twice, so that the plugging and unplugging direction is changed from the intersecting direction to the arrangement direction.