Circuit boards and circuit board assemblies

Abstract

The present application relates to a circuit board and a circuit board assembly. The circuit board according to an embodiment of the present application includes: a body unit; and a plurality of conductive lines extending from one end of the body unit to the other end in an extension direction toward the other end, wherein the body unit can have a recessed region recessed a predetermined distance from the other end toward the one end between at least two of the plurality of conductive lines.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2023-0099765, filed on July 31, 2023, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] This disclosure relates to circuit boards and circuit board assemblies. Background Technology

[0004] To curb environmental pollution and address the demand for new energy sources due to the depletion of oil resources, research and development of power generation based on environmentally friendly energy sources are underway. In particular, research on secondary batteries is being actively conducted, and various aspects such as materials, structures, processes, and stability of secondary batteries are being studied.

[0005] In order to operate the battery system, the management system and the secondary battery need to be electrically connected, and in this connection, a connector is used or a direct connection method is used.

[0006] According to existing technology, in this direct joining method, the weld quality may not be consistent when joining by welding. Additionally, inconveniences may occur during coating, cleaning, and visual inspection. Utility Model Content

[0007] Technical issues

[0008] The problem to be solved by this disclosure is to provide a circuit board and circuit board assembly that can ensure uniform solder quality and facilitate coating, cleaning and visual inspection.

[0009] Technical solution

[0010] A circuit board according to an embodiment of the present disclosure may include a body portion and a plurality of conductive lines extending from one end of the body portion toward the other end in an extending direction toward the other end, wherein the body portion may have a recessed region recessed between at least two of the plurality of conductive lines from the other end toward the one end by a predetermined distance.

[0011] A circuit board assembly according to embodiments of the present disclosure may include: a first circuit board including a first body portion and a plurality of first conductive lines extending from one end of the first body portion toward the other end in an extending direction toward the other end, wherein the first body portion has a recessed region recessed a predetermined distance from the other end toward the one end between at least two of the first conductive lines; and a second circuit board having a second body portion and a second conductive line arranged to be connected to the first conductive line, wherein the first conductive line and the second conductive line can be coupled to be electrically connected to each other.

[0012] Beneficial effects

[0013] According to a preferred embodiment of this disclosure, flatness can be maintained independently even under pressure.

[0014] According to the preferred embodiments of this disclosure, uniform welding quality can be ensured.

[0015] According to preferred embodiments of this disclosure, management tasks such as coating, cleaning, and visual inspection can be facilitated. Attached Figure Description

[0016] Figure 1 This is a bottom view of a circuit board according to an embodiment of the present disclosure.

[0017] Figure 2 This is an exploded perspective view of a circuit board according to an embodiment of the present disclosure.

[0018] Figure 3 This is a plan view of a circuit board viewed from above according to an embodiment of the present disclosure.

[0019] Figure 4 This is a side view of a circuit board according to an embodiment of the present disclosure, viewed from one side.

[0020] Figure 5 This is a side view showing a circuit board assembly according to an embodiment of the present disclosure. Detailed Implementation

[0021] In the following description, preferred embodiments of the present disclosure will be described in sufficient detail with reference to the accompanying drawings to enable those skilled in the art to readily implement the disclosure. However, the present disclosure may be implemented in many different forms and is not limited to or restricted by the following embodiments.

[0022] In order to clearly describe this disclosure, irrelevant descriptions or detailed descriptions of related known technologies that may unnecessarily obscure the essential points of this disclosure have been omitted, and throughout the specification, the same or similar reference numerals are attached to the same or similar constituent elements when reference numerals are attached to the constituent elements in each figure.

[0023] Furthermore, it should be understood that the terms or words used in the specification and appended claims should not be construed as limited to their ordinary or dictionary meanings, but rather should be interpreted based on their meanings and concepts corresponding to the technical aspects of this disclosure, and based on the principle of allowing the inventors to appropriately define terms for the best interpretation.

[0024] Figure 1 This is a bottom view of a circuit board according to an embodiment of the present disclosure.

[0025] The circuit board 10 may include a body portion 100. The body portion 100 may be a substrate body with ductility.

[0026] The circuit board 10 may include multiple conductive lines 110.

[0027] The conductive wires 110 can extend from one end 101 of the body portion 100 to the other end 102 in an extending direction toward the other end 102. In addition, these conductive wires 110 can extend at predetermined intervals.

[0028] A recessed region 120 may be formed in the body portion 100. The recessed region 120 may be a region that is recessed a predetermined distance L from the other end 102 toward the first end 101 between at least two of the plurality of conductive lines 110. Alternatively, the recessed region 120 may be formed between each of the plurality of conductive lines 110.

[0029] The circuit board 10 may have a reinforcing region 130. For example, the reinforcing region 130 may be a region corresponding to a predetermined distance L along a direction from the other end 102 toward the first end 101.

[0030] For electrical control of a battery system (e.g., an electric vehicle), an interconnect circuit board (ICB) connected to the individual battery cells can be connected to a battery management system (BMS) that performs control over the individual battery cells. The aforementioned circuit board 10 may be part of the ICB or mounted on a part of the ICB, thereby connecting the ICB and the BMS.

[0031] Figure 2 This is an exploded perspective view of a circuit board according to an embodiment of the present disclosure. Figure 3 This is a plan view of a circuit board viewed from above according to an embodiment of the present disclosure, and Figure 4This is a side view of a circuit board according to an embodiment of the present disclosure. The description of the above embodiments can be applied in the same or similar way to these embodiments.

[0032] The circuit board 10 may include a reinforcing member 140. For example, the reinforcing member 140 may increase the rigidity of the circuit board 10. The reinforcing member 140 may include a polyamide member or a metal member, but is not limited thereto.

[0033] The reinforcing member 140 may be disposed on a second surface of the body portion 100, which is the opposite surface to the first surface on which the plurality of conductive lines 110 are disposed. For example, when the conductive lines 110 are defined to be disposed on the lower surface, the reinforcing member 140 may be disposed on the upper surface.

[0034] The reinforcing member 140 may cover the reinforced region 130. For example, multiple reinforcing members 140 may be arranged in a direction transverse to the extension direction of the conductive line 110. The reinforcing member 140 may enhance the rigidity of the reinforced region 130.

[0035] When viewed from one side, the conductive lines 110, the body portion 100, and the reinforcing member 140 may be in the form of a laminate.

[0036] Figure 5 This is a side view showing a circuit board assembly according to an embodiment of the present disclosure. The description of the above embodiments can be applied in the same or similar way to these embodiments.

[0037] The circuit board assembly 1 may include a circuit board 10.

[0038] The circuit board assembly 1 may include a circuit board 20. In a battery system (e.g., an electric vehicle) where an interconnect circuit board (ICB) and a battery management system (BMS) are connected, the circuit board 10 may serve as the PCB on the BMS side to connect the ICB and the BMS.

[0039] At least one of the first circuit board 10 and the second circuit board 20 may be a flexible circuit board.

[0040] The circuit board 20 may include a body portion 200. The body portion 200 may be a substrate body.

[0041] The circuit board 20 may include conductive lines 210. For example, conductive lines 210 may be arranged to connect to conductive lines 110.

[0042] Conductive wire 110 and second conductive wire 210 can be connected to each other electrically. For example, conductive wire 110 and second conductive wire 210 can be connected by a metal connecting member 300 between conductive wire 110 and second conductive wire 210.

[0043] The multiple conductive wires 110 can maintain flatness independently. For example, an external heating tool can heat and pressurize the metal connecting member 300 through the reinforcing member 140. The metal connecting member 300 can connect the conductive wires 110 and the second conductive wire 210 by heating and pressurizing with an external heating tool. In other words, the conductive wires 110 and the second conductive wire 210 can be connected by welding.

[0044] The conductive wires 110 can independently maintain their flatness even when faced with external pressure (e.g., an external heating tool). For example, when an external heating tool heats and presses the reinforcing member 140, some of the conductive wires 110 may be pressed to a certain extent due to the heating and pressurization, but other conductive wires 110 can independently maintain their flatness without being pressed by the external heating tool.

[0045] When the conductor 110 maintains flatness independently, uniform welding quality can be ensured.

[0046] In addition, when the recessed area 120 is formed between the conductive lines 110 as described above, it is easier to clean residual material after soldering and facilitates management such as coating and visual inspection.

[0047] The present disclosure has been described above with respect to a limited number of embodiments and accompanying drawings, but the present disclosure is not limited thereto, and may be implemented in different forms by those skilled in the art to which the present disclosure pertains, within the scope of the technical aspects of the present disclosure and the appended claims and their equivalents.

[0048] [List of reference numerals]

[0049] 1: Circuit board assembly

[0050] 10: Circuit board

[0051] 20: Circuit board

[0052] 100: Main Body

[0053] 101: One end

[0054] 102: The other end

[0055] 110: Conductive wire

[0056] 120: Recessed area

[0057] 130: Strengthen the region

[0058] 140: Reinforcing Component

[0059] 200: Main Body

[0060] 210: Conductive wire

[0061] 300: Metal connecting components

Claims

1. A circuit board, comprising: Main body part; and Multiple conductive lines extend from one end of the body portion to the other end in a direction toward the other end of the body portion. The body portion has a recessed area that is recessed a predetermined distance from one end toward the other end between at least two of the plurality of conductive lines.

2. The circuit board according to claim 1, in, The plurality of conductive lines extend at predetermined intervals.

3. The circuit board according to claim 1, in, The recessed areas are formed between each of the plurality of conductive lines.

4. The circuit board according to claim 1, further comprising: A reinforcing member is disposed on a second surface of the body portion, the second surface being the opposite surface of the body portion to the first surface on which the plurality of conductive lines are disposed.

5. The circuit board according to claim 4, in, The reinforcing member covers a reinforcing area along a direction from the other end toward the first end, corresponding to the predetermined distance.

6. The circuit board according to claim 4, in, The reinforcing members are arranged in multiple ways in a direction transverse to the extension direction.

7. The circuit board according to claim 1, in, The multiple conductive lines maintain their flatness independently even when subjected to external pressure.

8. The circuit board according to claim 1, in, The main body portion is malleable.

9. A circuit board assembly, comprising: A first circuit board, comprising a first body portion and a plurality of first conductive lines, the plurality of first conductive lines extending from one end of the first body portion toward the other end in an extending direction toward the other end of the first body portion, wherein the first body portion has a recessed region, the recessed region being recessed from the other end toward the one end by a predetermined distance between at least two of the first conductive lines; and A second circuit board has a second body portion and a second conductive line, the second conductive line being arranged to connect to the first conductive line. The first conductive wire and the second conductive wire are connected together to be electrically connected to each other.

10. The circuit board assembly of claim 9, further comprising: A reinforcing member is disposed on a second surface of the first body portion, the second surface being the opposite surface of the first body portion on which the first conductive wire is disposed.

11. The circuit board assembly according to claim 10, in, The reinforcing member covers a reinforcing area along a direction from the other end toward the first end, corresponding to the predetermined distance.

12. The circuit board assembly according to claim 9, in, At least one of the first circuit board and the second circuit board is a flexible circuit board.

13. The circuit board assembly according to claim 9, in, The first conductive wire and the second conductive wire are connected by a metal connecting member between the first conductive wire and the second conductive wire.

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