Circuit board and circuit board assembly

Abstract

A circuit board according to an embodiment of the present invention comprises: 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 may have a recessed region, recessed a predetermined distance from the other end toward the one end, between at least two conductive lines among the plurality of conductive lines.

Description

Circuit boards and circuit board assemblies

[0001] Cross-citation with related applications

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2023-0099765, filed July 31, 2023, the entire contents of which are incorporated herein by reference.

[0003] Technology field

[0004] The present invention relates to a circuit board and a circuit board assembly.

[0005] To curb environmental pollution and address the growing demand for new energy sources due to the depletion of petroleum resources, research and development are underway on power generation based on eco-friendly energy sources. In particular, research on secondary batteries is actively underway, exploring diverse aspects of secondary batteries, including their materials, structure, processes, and stability.

[0006] In order to operate the battery system, it was necessary to electrically connect the management system and secondary batteries, and connectors or direct connection methods were used for this connection.

[0007] Prior art techniques have shown that soldering quality can be inconsistent during direct connection. Furthermore, problems can arise during coating, cleaning, and visual inspection.

[0008] The problem to be solved by the present invention is to provide a circuit board and circuit board assembly that can secure uniform soldering quality and are easy to coat, clean, and visually inspect.

[0009] A circuit board according to one embodiment of the present invention includes a body portion and a plurality of conductive lines extending from one end of the body portion to the other end in an extending direction toward the other end, and the body portion may have a recessed area formed between at least two of the plurality of conductive lines, the recessed area being recessed by a predetermined distance from the other end toward the one end.

[0010] According to one embodiment of the present invention, a circuit board assembly comprises: 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 to the other end in an extending direction toward the other end, wherein a recessed area is formed in the first body portion between at least two of the first conductive lines, the recessed area being recessed from the other end toward the one end by a predetermined distance; and a second circuit board including a second body portion, and second conductive lines arranged to be connected to the first conductive lines, wherein the first conductive lines and the second conductive lines can be electrically connected to each other.

[0011] According to a preferred embodiment of the present invention, flatness can be maintained independently of pressure.

[0012] According to a preferred embodiment of the present invention, uniform soldering quality can be secured.

[0013] According to a preferred embodiment of the present invention, maintenance such as coating, washing and visual inspection can be facilitated.

[0014] Figure 1 is a bottom view of a circuit board according to one embodiment of the present invention.

[0015] Figure 2 is an exploded perspective view of a circuit board according to one embodiment of the present invention.

[0016] Figure 3 is a plan view from above of a circuit board according to one embodiment of the present invention.

[0017] Figure 4 is a side view of a circuit board according to an embodiment of the present invention.

[0018] FIG. 5 is a side view showing a circuit board assembly according to one embodiment of the present invention.

[0019] Hereinafter, with reference to the attached drawings, preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the invention. However, the present invention may be implemented in various different forms and is not limited or restricted by the following examples.

[0020] In order to clearly explain the present invention, a detailed description of a part that is irrelevant to the description or a related known technology that may unnecessarily obscure the gist of the present invention has been omitted, and when adding reference signs to components of each drawing in this specification, the same or similar reference signs are attached to the same or similar components throughout the specification.

[0021] In addition, terms and words used in this specification and claims should not be interpreted as limited to their usual or dictionary meanings, but should be interpreted as meanings and concepts that conform to the technical idea of ​​the present invention based on the principle that the inventor can appropriately define the concept of the term to explain his or her own invention in the best way.

[0022] Figure 1 is a bottom view of a circuit board according to one embodiment of the present invention.

[0023] The circuit board (10) may include a body portion (100). The body portion (100) may be a flexible substrate body.

[0024] The circuit board (10) may include a plurality of conductive lines (110).

[0025] The conductive lines (110) may extend from one end (101) of the body part (100) to the other end (102) in an extension direction. In addition, the conductive lines (110) may extend at predetermined intervals.

[0026] A sunken area (120) may be formed in the body portion (100). The sunken area (120) may be an area sunken from the other end (102) toward one end (101) by a predetermined distance (L) between at least two of the plurality of conductive lines (110). In addition, the sunken area (120) may be formed between each of the plurality of conductive lines (110).

[0027] The circuit board (10) may have a reinforcement area (130). For example, the reinforcement area (130) may be an area corresponding to a predetermined distance (L) in the direction from the other end (102) toward one end (101).

[0028] In order to electrically control a battery system (e.g., an electric vehicle), an Inter Connect Board (ICB) connected to battery cells and a Battery Management System (BMS) that performs control of the battery cells can be connected. The circuit board (10) described above can be part of the ICB or mounted on a part of the ICB, thereby connecting the ICB and the BMS.

[0029] Fig. 2 is an exploded perspective view of a circuit board according to an embodiment of the present invention, Fig. 3 is a plan view of a circuit board according to an embodiment of the present invention as viewed from above, and Fig. 4 is a side view of a circuit board according to an embodiment of the present invention as viewed from one side. The description of the above-described embodiments may be applied identically or similarly to the present embodiments.

[0030] The circuit board (10) may include a reinforcing member (140). For example, the reinforcing member (140) may reinforce the rigidity of the circuit board (10). The reinforcing member (140) may include, but is not limited to, a polyamide member or a metal member.

[0031] The reinforcing member (140) may be placed on a second surface, which is the opposite surface of the first surface on which a plurality of conductive lines (110) are arranged, among the surfaces of the body portion (100). For example, when it is defined that the conductive lines (110) are arranged on the lower surface, the reinforcing member (140) may be placed on the upper surface.

[0032] The reinforcing member (140) can cover the reinforcing area (130). For example, a plurality of reinforcing members (140) can be arranged in a direction transverse to the extension direction of the conductive lines (110). The reinforcing member (140) can reinforce the rigidity of the reinforcing area (130).

[0033] When the circuit board (10) is viewed from one side, the conductive lines (110), the body (100), and the reinforcing member (140) may be laminated.

[0034] Figure 5 is a side view illustrating a circuit board assembly according to an embodiment of the present invention. The description of the above-described embodiments may be applied identically or similarly to the present embodiments.

[0035] The circuit board assembly (1) may include a circuit board (10).

[0036] The circuit board assembly (1) may include a circuit board (20). In a battery system (e.g., an electric vehicle) in which an ICB (Inter Connect Board) and a BMS (Battery Management System) are connected, the circuit board (20) may be a PCB on the BMS side and may connect the ICB and the BMS.

[0037] At least one of the circuit board (10) and the second circuit board (20) may be a flexible circuit board.

[0038] The circuit board (20) may include a body portion (200). The body portion (200) may be a substrate body.

[0039] The circuit board (20) may include conductive lines (210). For example, the conductive lines (210) may be arranged to be connected to the conductive lines (110).

[0040] The conductive lines (110) and the second conductive lines (210) can be electrically connected to each other. For example, the conductive lines (110) and the second conductive lines (210) can be connected to each other with a metal connecting member (300) therebetween.

[0041] A plurality of conductive lines (110) can independently maintain flatness. 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 lines (110) and the second conductive lines (210) by heating and pressing the external heating tool. In other words, the conductive lines (110) and the second conductive lines (210) can be connected by soldering.

[0042] The conductive lines (110) can independently maintain their flatness even under external pressure, such as from an external heating tool. For example, when the external heating tool heats and presses the reinforcing member (140), some of the conductive lines (110) are pressed to a certain degree by the heating and pressurization, but other conductive lines (110) are not pressed by the external heating tool and can independently maintain their flatness.

[0043] When the conductive lines (110) are independently maintained in flatness, uniform soldering quality can be secured.

[0044] In addition, when a sunken area (120) is formed between the conductive lines (110) as described above, it may be easy to clean the residual material after soldering, and management such as coating and visual inspection may be easy.

[0045] Although the present invention has been described above with reference to limited embodiments and drawings, the present invention is not limited thereto, and various embodiments are possible within the scope equivalent to the technical idea of ​​the present invention and the patent claims to be described below by a person having ordinary skill in the art to which the present invention pertains.

[0046]

[0047] [Explanation of symbols]

[0048] 1: Circuit board assembly

[0049] 10: Circuit board

[0050] 20: Circuit board

[0051] 100: Body

[0052] 101: First of all

[0053] 102: The other end

[0054] 110: Conducting lines

[0055] 120: sunken area

[0056] 130: Reinforcement area

[0057] 140: Reinforcing member

[0058] 200: Body

[0059] 210: Conducting lines

[0060] 300: Metal connecting member

Claims

1. Body part; and It includes a plurality of conductive lines extending from one end of the body to the other end in an extension direction, The above body part, A circuit board, wherein a recessed area is formed between at least two of the plurality of conductive lines, recessed from the other end toward the one end by a predetermined distance.

2. In claim 1, The above multiple conductive lines are, A circuit board that extends at regular intervals.

3. In claim 1, The above sunken area is, A circuit board formed between each of the plurality of conductive lines.

4. In claim 1, A circuit board further comprising a reinforcing member disposed on a second surface, which is the opposite surface of the first surface on which the plurality of conductive lines are disposed, among the surfaces of the body portion.

5. In claim 4, The above reinforcing member is, A circuit board that covers a reinforcement area corresponding to the predetermined distance in the direction from the other end to the first end.

6. In claim 4, The above reinforcing member is, A circuit board arranged in a plurality of directions crossing the above extension direction.

7. In claim 1, The above multiple conductive lines are, A circuit board that maintains flatness independently even under external pressure.

8. In claim 1, The above body part, A circuit board that has flexibility.

9. Includes a first body part and a plurality of first conductive lines extending from one end of the first body part to the other end in an extension direction, A first circuit board, in which a recessed area is formed between at least two of the first conductive lines among the first conductive lines, and is recessed from the other end toward the first end by a predetermined distance; and A second circuit board is provided with a second body part and second conductive lines arranged to be connected to the first conductive lines, The above first conducting lines and the above second conducting lines, A circuit board assembly that is electrically connected and joined.

10. In claim 9, A circuit board assembly further comprising a reinforcing member disposed on a second surface, which is the opposite surface of the first surface on which the first conductive lines are disposed, among the surfaces of the first body portion.

11. In claim 10, The above reinforcing member is, A circuit board assembly covering a reinforcement area corresponding to the predetermined distance in a direction from the other end toward the first end.

12. In claim 9, A circuit board assembly, wherein at least one of the first circuit board and the second circuit board is a flexible circuit board.

13. In claim 9, The above first conducting lines and the above second conducting lines, A circuit board assembly joined with metal connecting members between them.

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