Protective circuit module, battery assembly and method for producing battery assembly

Abstract

The invention relates to a protection circuit module, a battery assembly and a method for manufacturing the battery assembly. The protection circuit module of the battery assembly includes: a substrate; a component mounted on the substrate; and a tab connection portion spaced apart from the component on the substrate and for connection with an electrode tab, in which the first barrier and the second barrier are on the tab connection portion and face each other.

Description

Technical Field

[0001] This disclosure relates to a protection circuit module, a battery assembly including the protection circuit module, and a method for manufacturing the battery assembly. Background Technology

[0002] Unlike primary batteries, which are not designed to be (re)charged, secondary (or rechargeable) batteries are designed to be discharged and recharged. Low-capacity secondary batteries are used in portable small electronic devices such as smartphones, feature phones, laptops, digital cameras, and camcorders, while high-capacity secondary batteries are widely used as power sources to drive motors in hybrid and electric vehicles and for storing electricity (e.g., household and / or utility-scale power storage). A secondary battery typically includes an electrode assembly containing positive and negative electrodes, a housing that houses the electrode assembly, and electrode terminals connected to the electrode assembly.

[0003] The operating voltage range and capacity of a secondary battery can be determined based on the positive electrode, negative electrode, and electrolyte. Charging and discharging beyond the permissible range can damage the battery, leading to permanent functional impairment or even fire. A protection circuit module (PCM) can be a safety device that prevents the battery from catching fire or exploding by short-circuiting the circuit to prevent further current flow when the battery's internal temperature rises to a high level or the battery voltage increases due to overcharging, etc. With a PCM, the battery can be protected during use of electronic products containing the battery by preventing overcharging, over-discharging, and overcurrent.

[0004] The connection between the battery and the PCM can be achieved through the connection between the battery's electrode terminals and the PCM's terminal connection points. However, during battery manufacturing, a short circuit may occur when the battery's electrode terminals come into contact with the PCM components. Furthermore, the component mounting area may be relatively narrow due to the long spacing between the components and the terminal connection points.

[0005] The information disclosed in this background section is intended to enhance the understanding of the background art of this disclosure, and therefore may contain information that does not constitute related (or prior art). Summary of the Invention

[0006] This disclosure provides a protection circuit module, a battery assembly including the protection circuit module, and a method for manufacturing the battery assembly.

[0007] However, the technical problems to be solved by this disclosure are not limited to the above-mentioned problems, and those skilled in the art will clearly understand from the following description of this disclosure other problems not mentioned herein, as well as the aspects and features of these problems that this disclosure will solve.

[0008] According to one or more embodiments of the present disclosure, a protection circuit module includes: a substrate; a component mounted on the substrate; and a terminal block connection portion spaced apart from the component on the substrate and for connection to an electrode terminal block of a battery cell, wherein a first barrier and a second barrier are formed on the terminal block connection portion and face each other.

[0009] In this embodiment, the longitudinal direction of the first barrier and the longitudinal direction of the second barrier can be parallel to each other.

[0010] In an embodiment, at least one of the first barrier and the second barrier can be formed by arranging adhesive members.

[0011] In an embodiment, the adhesive component may be at least one of a tape and a coating agent.

[0012] In one or more embodiments, the first barrier and the second barrier may be formed at opposite ends of the connector portion, respectively.

[0013] In one or more embodiments, the first barrier and the second barrier can be formed by bending upward from the end of the connector portion.

[0014] According to one or more embodiments of the present disclosure, a battery assembly includes: a battery cell including an electrode assembly and a housing, the electrode assembly having electrode tabs, the housing being configured to house the electrode assembly and the electrode tabs extending outward from the housing; and a protection circuit module including a substrate, components on the substrate, and tab connection portions on the substrate spaced apart from the components, the electrode tabs being connected to the tab connection portions, wherein a first barrier and a second barrier are on the tab connection portions and face each other.

[0015] In one or more embodiments, the terminal block connection portion may include a positive electrode terminal block connection portion and a negative electrode terminal block connection portion, and the component may be located on the substrate between the positive electrode terminal block connection portion and the negative electrode terminal block connection portion.

[0016] In one or more embodiments, the connection between the terminal block connection portion and the electrode terminal block can be formed by welding.

[0017] In one or more embodiments, the longitudinal direction of the first barrier and the longitudinal direction of the second barrier may be parallel to each other.

[0018] In one or more embodiments, at least one of the first barrier and the second barrier may be formed by arranging adhesive members.

[0019] In one or more embodiments, the thickness of each of the first barrier and the second barrier may be less than or equal to the thickness of the electrode tab.

[0020] In one or more embodiments, the width of the terminal block connection portion may be greater than or equal to the sum of the widths of the electrode terminal block, the first barrier, and the second barrier.

[0021] In one or more embodiments, the first barrier and the second barrier can be formed by bending upward from the end of the connector portion.

[0022] In one or more embodiments, the thickness of each of the first barrier and the second barrier may be less than or equal to the sum of the thickness of the terminal block connection portion and the thickness of the electrode terminal block.

[0023] In one or more embodiments, the width of the surface on which the terminal block is arranged may be greater than or equal to the width of the electrode terminal block.

[0024] In one or more embodiments, the housing may include a bag and a sealing portion, and the electrode tabs may extend outward from the sealing portion.

[0025] According to one or more embodiments of this disclosure, a method for manufacturing a battery assembly includes: providing a battery cell, the battery cell including an electrode assembly and a housing, the electrode assembly having electrode tabs, the housing being configured to receive the electrode assembly and the electrode tabs extending outwardly from the housing; providing a protection circuit module, the protection circuit module including a substrate, a component mounted on the substrate, and a tab connection portion on the substrate spaced apart from the component and for connection with the electrode tabs; aligning the battery cell and the protection circuit module such that the electrode tabs and the tab connection portion having barriers formed face each other; and electrically connecting the battery cell and the protection circuit module by connecting the tab connection portion and the electrode tabs, wherein the barriers include a first barrier and a second barrier on the tab connection portion and facing each other.

[0026] In one or more embodiments, providing the protection circuit module may include arranging a first barrier and a second barrier at opposite ends of the terminal block connection portion.

[0027] In one or more embodiments, the arrangement of the first barrier and the second barrier at opposite ends of the connector portion may include forming an extension portion by extending the end of the connector portion, and forming the first barrier and the second barrier by bending the extension portion upward.

[0028] According to one or more embodiments of this disclosure, contact between the electrode terminals of the battery assembly and components mounted on the protection circuit module can be prevented, thereby avoiding short circuits during the manufacturing process of the battery assembly.

[0029] According to one or more embodiments of this disclosure, the spacing between components mounted on the protection circuit module and the terminal block connection portion can be reduced, thereby relatively expanding the component mounting area.

[0030] According to one or more embodiments of this disclosure, short-circuit prevention can be achieved without complex processes by forming a barrier at the end of the connector portion using a tape and / or a coating agent.

[0031] According to one or more embodiments of this disclosure, the productivity of products including protection circuit modules can be improved by reducing the number of processes while achieving short-circuit prevention effects.

[0032] However, the aspects and features of this disclosure are not limited to those described above, and other aspects and features not mentioned will be clearly understood by those skilled in the art from the detailed description described below. Attached Figure Description

[0033] The accompanying drawings illustrate embodiments of the present disclosure and, together with the detailed description of the present disclosure, further describe aspects and features of the present disclosure. Therefore, the present disclosure should not be construed as limited to the drawings.

[0034] Figure 1 The configuration of a battery cell according to one or more embodiments of the present disclosure is illustrated.

[0035] Figure 2 The battery cells and protection circuit modules of a battery assembly according to one or more embodiments of the present disclosure are illustrated schematically.

[0036] Figure 3 The illustration shows a schematic diagram of one surface of the protection circuit module and a battery cell.

[0037] Figure 4 The illustration shows a schematic diagram of a protection circuit module and a battery cell according to one or more embodiments of the present disclosure.

[0038] Figure 5 Example along the path where the barrier corresponds to the strip. Figure 4 A cross-sectional view taken from line A-A'.

[0039] Figure 6 Example of a barrier corresponding to a coating agent along Figure 4 A cross-sectional view taken from line A-A'.

[0040] Figure 7 For example, when the barrier is in the bent shape of a connector section, along... Figure 4 A cross-sectional view taken from line A-A'.

[0041] Figure 8 A flowchart illustrating a method for manufacturing a battery assembly according to one or more embodiments of the present disclosure is shown.

[0042] Figure 9and Figure 10 The diagram illustrates a method for manufacturing a barrier according to one or more embodiments of the present disclosure.

[0043] Description of some figure labels

[0044] 100: Cell battery 110: Electrode assembly

[0045] 120: First electrode plate; 130: Second electrode plate

[0046] 140: Diaphragm; 150: Electrode connector

[0047] 160: Connector diaphragm; 170: Housing

[0048] 180: Receiving part; 190: Sealing part

[0049] 200: Battery assembly; 210: Protection circuit module

[0050] 220: Substrate; 230: Component mounting area

[0051] 240: Connecting part of the terminal block 300: Component

[0052] 410, 510, 710: First barrier; 420, 520, 720: Second barrier

[0053] Examples of sections A-A': 500, 600, 700

[0054] 910: Extension

[0055] L1, L2: Spacing between the connector and the component

[0056] t1, t3: Barrier thickness; t2, t5: Electrode terminal thickness

[0057] t4: Thickness of the connector portion

[0058] w1: Width of the connector portion; w2, w6: Width of the electrode connectors.

[0059] w3: Width of the first barrier w4: Width of the second barrier

[0060] w5: Width of the surface where the connector is arranged.

[0061] w7, w8: Width of the extended portion Detailed Implementation

[0062] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. The terms or words used in this specification and claims should not be construed as having a conventional or dictionary meaning, but should be interpreted as being consistent with the technical spirit of this disclosure, based on the principle that the inventor is capable of being his / her own lexicographer in appropriately defining the terms and concepts to best describe his / her invention.

[0063] The embodiments described in this specification and the configurations shown in the accompanying drawings are only some of the embodiments of this disclosure and do not represent all the technical spirit, aspects, and features of this disclosure. Therefore, it should be understood that various equivalents and modifications that can replace or modify the embodiments described herein may exist at the time of filing this application.

[0064] It will be understood that when a component or layer is described as being "on," "connected to," or "attached to" another component or layer, it can be directly on, connected to, or attached to the other component or layer, or one or more intermediate components or layers may be present. When a component or layer is described as being "directly" on, directly connected to, or directly attached to another component or layer, no intermediate components or layers are present. For example, when a first component is described as being "attached" or "connected" to a second component, the first component can be directly attached to or connected to the second component, or the first component can be indirectly attached to or connected to the second component via one or more intermediate components.

[0065] In the accompanying drawings, the dimensions of various elements, layers, etc., may be enlarged for clarity of illustration. The same reference numerals indicate the same elements. As used herein, the term “and / or” includes any and all combinations of one or more associated listed items. Furthermore, the use of “may” in describing embodiments of this disclosure refers to “one or more embodiments of this disclosure.” Expressions such as “at least one of…” and “any one of…” preceding / following the list of elements modify the entire list of elements, but not individual elements in the list. When phrases such as “at least one of A, B, and C,” “at least one of A, B, or C,” “at least one selected from the group of A, B, and C,” or “at least one selected from A, B, and C” are used to specify a list of elements A, B, and C, the phrase may refer to any and all suitable combinations or subsets of A, B, and C, such as A, B, C, A and B, A and C, B and C, or A and B and C. As used herein, the term “use” may be considered synonymous with the term “utilize.” As used herein, the terms “roughly,” “approximately,” and similar terms are used as approximate terms rather than terms of degree and are intended to account for the inherent variations in measurements or calculations that would be apparent to a person skilled in the art.

[0066] It will be understood that while the terms first, second, third, etc., may be used to describe various elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or segment from another element, component, region, layer, or segment. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment.

[0067] For ease of description, this document uses spatial relative terms such as “below,” “under,” “down,” “above,” and “up” to describe the relationship between one element or feature and another element or feature as shown in the figures. It should be understood that spatial relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as “below” or “under” other elements or features can be oriented as “above” or “upon” other elements or features. Therefore, the term “below” can encompass both above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptors used herein should be interpreted accordingly.

[0068] The terminology used herein is for the purpose of describing embodiments of this disclosure and is not intended to limit this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It should be further understood that the terms “comprising” and / or “including” as used in this specification specify the presence of the stated features, integers, steps, operations, components, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0069] Furthermore, any numerical ranges disclosed and / or enumerated herein are intended to include all subranges with the same numerical precision contained within the enumerated ranges. For example, the range “1.0 to 10.0” is intended to include all subranges between the enumerated minimum value of 1.0 and the enumerated maximum value of 10.0 (and inclusive of both), i.e., a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit enumerated herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit enumerated in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to amend this specification, including the claims, to expressly enumerate any subranges contained within the scope expressly enumerated herein.

[0070] Referring to two compared elements, features, etc., as “identical” may mean that they are “substantially identical.” Therefore, the phrase “substantially identical” can include cases with deviations considered low in the art, such as 5% or less. Furthermore, when a parameter is said to be consistent in a given region, this may mean that it is consistent in terms of its mean.

[0071] Throughout this specification, unless otherwise stated, each element may be singular or plural.

[0072] Placing any element "above (or below)" or "above (or below)" another element may mean that the arbitrary element can be positioned to contact the upper (or lower) surface of the element, and other elements may also be positioned between the element and any element positioned on (or below) the element.

[0073] Furthermore, it will be understood that when a component is referred to as “connected,” “linked,” or “attached” to another component, the components can be directly “connected,” “linked,” or “attached” to each other, or another component can be “between” the components.

[0074] Throughout this specification, unless otherwise stated, when “A and / or B” is used, it means A, B, or A and B. In other words, “and / or” includes any or all combinations of the listed items. Unless otherwise indicated, when “C to D” is used, it means greater than or equal to C and less than or equal to D.

[0075] In view of the full contents of this disclosure, those skilled in the art will understand that each suitable feature of the various embodiments of this disclosure may be combined in part or in whole or in combination with one another, and may be technically interlocked and operated in a variety of suitable ways, and unless otherwise stated or implied, each embodiment may be implemented independently of one another or in any suitable combination with one another.

[0076] The terminology used in this specification is for describing embodiments of this disclosure and is not intended to limit this disclosure.

[0077] In this disclosure, for clarity of description, the dimensions and relative dimensions of layers and regions shown in the accompanying drawings may be enlarged. That is, the dimensions shown in the drawings are for ease of understanding only and are not limitations. Furthermore, the same reference numerals denote the same elements throughout the specification.

[0078] Figure 1 The configuration of a battery cell according to one or more embodiments of the present disclosure is illustrated.

[0079] Secondary batteries can be classified into can-type and pouch-type secondary batteries based on the shape of their casing. Can-type secondary batteries can be further divided into prismatic and cylindrical secondary batteries. When a secondary battery is formed as a can-type secondary battery, the battery cell may include a can having a generally cuboid or cylindrical shape and a lid assembly that engages with the opening of the can to seal it. The battery cell may include a battery casing and electrode assemblies and electrolyte contained within the battery casing.

[0080] In the case of a can-shaped casing, the battery cell and the protection circuit module can be electrically connected via conductors called leads or lead plates. For example, the lead plate can be attached to the battery cell by soldering while being attached to the protection circuit module. In this disclosure, the form in which the protection circuit module is joined to the battery cell as described above can be referred to as a battery assembly.

[0081] Furthermore, the structure used to cover the space between the battery cell and the protection circuit module, as well as the surface of the protection circuit module, can be made using molded resin or a separate housing. The terminal block connection portion of the protection circuit module can be connected to a lead plate for electrical connection to the battery cell, and external connection terminals can be connected to external electronic devices to form an electrical path during charging and discharging.

[0082] The secondary battery formed as described above is called a battery cell, and the battery cell can be electrically connected to a protection circuit module to form a battery assembly. In this disclosure, the case of a pouch-type secondary battery or a prismatic secondary battery is described as an example, but this disclosure is not limited thereto.

[0083] like Figure 1 As shown, the battery cell 100 may include an electrode assembly 110, an electrolyte, and a housing 170, which houses the electrode assembly 110 and the electrolyte in a housing portion 180.

[0084] Electrode assembly 110 may include a negative electrode plate as a first electrode plate 120, a positive electrode plate as a second electrode plate 130, and a diaphragm 140 located between the first electrode plate 120 and the second electrode plate 130. In one or more other embodiments, the first electrode plate 120 may be a positive electrode plate, and the second electrode plate 130 may be a negative electrode plate. The negative electrode plate may be provided with a negative electrode tab electrically connected to an uncoated portion of the negative electrode, and the positive electrode plate may be provided with a positive electrode tab electrically connected to an uncoated portion of the positive electrode. The negative electrode tab and the positive electrode tab may be electrically connected to the outside via negative electrode leads and positive electrode leads, respectively soldered to external terminals. A tab membrane 160 for insulating from housing 170 may be attached to the negative electrode tab and the positive electrode tab, respectively. In this disclosure, the electrode tab is used to indicate a structure electrically connected to the electrode assembly through the uncoated portion of the electrode plate and includes a lead plate or lead.

[0085] The housing 170 can be a bag and may include sealing portions 190. The housing 170 can be sealed by bringing the sealing portions 190 at their edges into contact with each other while the electrode assembly 110 is housed therein. In this case, sealing can be performed simultaneously while the terminal diaphragm 160 is located between the sealing portions 190. Figure 1 As shown, the terminal block 160 may be a removable terminal block attached to each of the negative electrode terminal block and the positive electrode terminal block.

[0086] The sealing portion 190 of the housing 170 may be formed of a hot-melt material and may have a structure that achieves sealing by bonding the hot-melt layers together. Since hot-melt materials typically have weak adhesion to metals, the thin-film form of the terminal piece 160 may be attached to the electrode terminal piece 150 and fused to the housing 170.

[0087] As described above, the battery cell 100 may include a housing 170, wherein electrode terminals 150 connected to the electrode assembly 110 extend outward. The exposed electrode terminals 150 may be connected to a terminal connection portion of a protection circuit module. The specific structure of the protection circuit module and the terminal connection portion is described below.

[0088] Electrode assembly 110 can be formed by winding and / or stacking a stack of a first electrode plate 120, a diaphragm 140, and a second electrode plate 130, which are formed into a sheet or film shape. When electrode assembly 110 is a wound stack, the winding axis can be parallel to the longitudinal direction of housing 170. Furthermore, electrode assembly 110 can be a stack type instead of a wound type. In this disclosure, the shape of electrode assembly 110 is not limited. In one or more embodiments, electrode assembly 110 can be a Z-stacked electrode assembly with positive and negative electrode plates inserted on both sides of a diaphragm folded into a Z-stack. In one or more embodiments, electrode assembly 110 can be housed in housing 170 by stacking one or more electrode assemblies such that their long sides are adjacent to each other. In this disclosure, the number of electrode assemblies 110 is not limited. In the electrode assembly, the first electrode plate 120 can be used as a negative electrode, and the second electrode plate 130 can be used as a positive electrode. Of course, the reverse is also possible.

[0089] The first electrode plate 120 can be formed by coating a first electrode active material, such as graphite and / or carbon, onto a first electrode current collector plate formed of a metal foil such as copper, copper alloy, nickel, or nickel alloy, and may include a first electrode tab (or a first uncoated portion) as a region where the first electrode active material is not coated. The first electrode tab can serve as a current flow path between the first electrode plate 120 and the first current collector. In some examples, when manufacturing the first electrode plate 120, the first electrode tab can be formed by pre-cutting the first electrode plate 20 to protrude to one side, or it can protrude further to one side than the diaphragm 140 without separate cutting.

[0090] The second electrode plate 130 can be formed by coating a second electrode active material, such as a transition metal oxide, onto a second electrode current collector plate formed of a metal foil such as aluminum or an aluminum alloy, and may include a second electrode tab (or a second uncoated portion) as a region where the second electrode active material is not coated. The second electrode tab can be a current flow path between the second electrode plate 130 and the second current collector. In some examples, when manufacturing the second electrode plate 130, the second electrode tab can be formed by pre-cutting the second electrode plate 130 to protrude toward one side or the other, or it can protrude further toward one side or the other than the diaphragm 140 without separate cutting.

[0091] In some examples, such as Figure 1 As shown, the first electrode contact can be located on the left end surface of the electrode assembly 110, and the second electrode contact can be located on the right end surface of the electrode assembly 110, or they can be located on one surface in the same direction. The left and right sides are for ease of reference. Figure 1The battery cell 100 shown is described, and the positions of the first electrode terminal and the second electrode terminal can be changed when the battery cell 100 is rotated left or right or up and down.

[0092] Figure 2 The illustration schematically depicts a battery cell and a protection circuit module of a battery assembly according to one or more embodiments of the present disclosure. Reference Figure 2 The terminal block connection portion 240 and the component mounting area 230 on the substrate 220 are shown to have a generally cuboid shape, but this disclosure is not limited thereto.

[0093] According to one or more embodiments of this disclosure, the protection circuit module 210 can prevent overcharging, over-discharging, and overcurrent of the battery cell 100. For this purpose, the protection circuit module 210 can be electrically connected to the electrode assembly of the battery cell 100 (e.g., Figure 1 The electrode assembly 110). The protection circuit module 210 can be electrically connected to the electrode assembly housed in the housing 170. For example... Figure 2 As shown, the protection circuit module 210 can be connected to the electrode terminals 150 extending outward from the housing 170. The electrode terminals 150 may include a positive electrode terminal and a negative electrode terminal.

[0094] The protection circuit module 210 according to one or more embodiments may include a substrate 220, components, and terminal block connection portions 240. The components are mounted on the substrate 220 in a component mounting area 230, and the terminal block connection portions 240 are spaced apart (e.g., spaced apart) from the components on the substrate 220 and connected to the electrode terminals 150 of the battery cell 100. The components may be mounted between the terminal block connection portions 240 in the component mounting area 230 on the substrate 220.

[0095] The protection circuit module 210 can be formed by mounting protection modules (including switch portions, control circuit portions, resistors, capacitors, etc.), positive temperature coefficient (PTC) thermistors, connection terminals (e.g., battery connection terminals B+ and B- for positive and negative terminals), and external connection terminals (e.g., external connection terminals P+ and P- for positive and negative terminals) on a substrate 220 on which wiring patterns are formed. In this disclosure, components other than the terminal block connection portions 240 that can be used as battery connection terminals B+ and B- for connection to the battery cell 100 and external connection terminals P+ and P- for connection to an external load can be collectively referred to as components, and the area occupied by the components is defined as the component mounting area 230.

[0096] The control circuit section can detect overcharge, over-discharge, and overcurrent conditions, and the switching section can connect and disconnect the circuit's power supply. Resistors and capacitors can protect the integrated circuit (IC) chips used in the control circuit section and switching section from abnormal voltage or static electricity, and can remove noise generated in the IC chip's power supply.

[0097] The positive and negative battery connection terminals B+ and B- can be electrically connected to the battery cell 100, and the external connection terminals P+ and P- of the positive and negative terminals can be connected to a device to form an electrical path during charging and discharging. The terminal block connection portion 240 of the battery connection terminals B+ and B- can be connected to the electrode terminal block 150 of the battery cell 100, and electrically connected to the electrode assembly 110 connected to the electrode terminal block 100.

[0098] The terminal block connection portion 240 can be a conductor through which current can flow for electrical connection. For example, the terminal block connection portion 240 can be made of nickel. The connection between the terminal block connection portion 240 and the electrode terminal block 150 can be achieved by welding, resistance welding, laser welding and / or projection welding methods.

[0099] According to one or more embodiments, a battery assembly 200 may include a battery cell 100, the battery cell 100 including an electrode assembly, a housing 170 housing the electrode assembly, the electrode assembly having electrode tabs 150 connected to the electrode assembly, and the electrode tabs 150 extending outward from the housing 170. In one or more embodiments, the battery assembly 200 may include a protection circuit module 210, the protection circuit module 210 including a substrate 220, components mounted on the substrate 220 in a component mounting area 230, and tab connection portions 240 on the substrate 220 spaced apart from the components.

[0100] The dimensions of the connector portion 240 can be varied according to the dimensions of the electrode connector 150 to be connected. For example, the length of the end of the connector portion 240 parallel to the short side of the substrate 220 can correspond to the length of the short side of the substrate 220. In this case, the welding connection area between the connector portion 240 and the electrode connector 150 becomes longer, thus enabling a stable connection.

[0101] In one or more embodiments, such as Figure 2As shown, the length of the end of the connector portion 240 parallel to the short side of the substrate 220 can be shorter than the length of the short side of the substrate 220. In this case, when the substrate 220, on which the connector portion 240 is arranged, is connected to the battery cell 100 and assembled, the risk of contact with a separate external conductor can be reduced. Furthermore, when the protection circuit module 210 is installed in the battery assembly 200, the connector portion 240, as a conductor, can be kept out of external exposure, thereby improving safety-related reliability.

[0102] To connect the battery cell 100 and the protection circuit module 210 of the battery assembly 200 according to one or more embodiments, the protection circuit module 210 may be inserted, for example, when the battery cell 100 is placed in a welding fixture. The welding fixture may be designed to reflect the tolerances of the sub-materials included in the welding fixture. Therefore, the sub-materials may flow or move a certain length within the welding fixture. When manufacturing the battery assembly 200 using the welding fixture described above, the electrode terminals 150 of the battery cell 100 and / or the protection circuit module 210 may move a certain length. Therefore, the electrode terminals 150 of the battery cell 100 may contact the components and / or component mounting area 230 of the protection circuit module 210.

[0103] A short circuit may occur if the polarities of the connected components and the electrode terminals 150 are opposite. For example, a short circuit may occur if the electrode terminal is a positive electrode terminal and the component connected to it is a negative electrode, or if the electrode terminal is a negative electrode terminal and the component connected to it is a positive electrode.

[0104] A short circuit, as described above, may occur when the electrode terminals 150 of the battery cell 100 are connected to a non-insulated area in the component mounting area 230. An agent can be applied to the substrate 220 in the component mounting area 230 to insulate the mounted component and prevent damage from external impacts. A short circuit may occur when the non-insulated area in the component mounting area 230 and the electrode terminals 150 of the battery cell 100 have opposite polarities and are in contact with each other.

[0105] In the battery assembly 200 used in small electronic devices, the protection circuit module 210 has a small size, so the component mounting area 230 of the substrate 220 may be narrow. To prevent short circuits, the minimum distance between the component and / or the component mounting area 230 and the terminal block connection portion 240 can be designed to be relatively long. In this disclosure, the minimum distance between the component and / or the component mounting area 230 and the terminal block connection portion 240 can be defined as the spacing distance between the terminal block connection portion 240 and the component.

[0106] Figure 3A schematic diagram illustrating a surface of a protection circuit module and a battery cell in one or more embodiments of this disclosure. Although Figure 3 The upper end of the connector portion 240 is shown to coincide with the upper end of the substrate 220, but this disclosure is not limited thereto, and the upper end of the connector portion 240 can be varied according to the size of the electrode connector 150 to be connected. Furthermore, the number, shape, arrangement, and / or configuration of the components 300 are shown arbitrarily, and this disclosure is not limited thereto.

[0107] According to one or more embodiments, substrate 220 can support the configuration of protection circuit module 210. Substrate 220 may include various circuits and components 300 capable of controlling the operation of battery cells 100. Components 300 mounted on substrate 220 can communicate with external control devices via wired or wireless means. Substrate 220 may be a printed circuit board (PCB) or a flexible printed circuit board. Substrate 220 may be made of one or more of FR-1, FR-4, CEM-1, CEM-3, TEFLON, ceramic, and / or metal. Substrate 220 may include a copper layer that allows electrical signals to be transmitted between components 300. The copper layer may be formed on all or part of substrate 220. Electrical connections for the operation of components 300 can be made through the copper layer.

[0108] According to one or more embodiments, a component 300 may be mounted on a component mounting area on a substrate 220 (e.g., Figure 2 The components 300 are installed in the component mounting area 230. The components 300 can be installed spaced apart from each other (e.g., spaced apart). The position and arrangement of the components 300 can be... Figure 3 The position and arrangement shown may be changed, and this disclosure is not limited thereto. Component 300 may be made of insulating material, or may be positive or negative.

[0109] Components 300 according to one or more embodiments may be mounted on substrate 220 at different heights. Depending on the specifications (e.g., size and / or characteristics) of each component 300, the components 300 may be mounted on substrate 220 at different heights. In one or more embodiments, the heights of the contact portion 240, the external connection terminals, and the components 300 may differ from each other. For example, the charging / discharging switching element within the component 300 may be mounted at a height higher than the contact portion 240.

[0110] refer to Figure 3 With one surface of the terminal connection portion 240 according to one or more embodiments being substantially flat, the electrode terminals 150 of the battery cell 100 are used in the manufacture of battery assemblies (e.g., Figure 2During the process of assembly 200, the battery assembly may easily detach from one surface of the terminal block connection portion 240, and therefore may be damaged due to contact with component 300 and / or component mounting area (e.g., Figure 2 A short circuit may occur due to contact between the component mounting area 230 and the component 300. Therefore, according to one or more embodiments, the spacing L1 between the terminal block connection portion 240 of the protection circuit module 210 and the component 300 can be designed to be relatively long. Therefore, the component mounting area 230 can be narrow.

[0111] The contact portion 240 of the protection circuit module 210 according to one or more embodiments may include a first barrier and a second barrier, which are formed on the contact portion 240 facing each other, to expand the component mounting area and improve the space utilization of the substrate by reducing the spacing L1 between the contact portion 240 and the component 300. Reference is made below. Figures 4 to 10 Describe the location and structure of the first and second barriers.

[0112] Figure 4 A schematic diagram illustrating a surface of a protection circuit module and a battery cell according to one or more embodiments of the present disclosure is shown. Although Figure 4 An example is shown where the upper end of the connector portion 240 coincides with the upper end of the substrate 220, but this disclosure is not limited thereto, and the upper end of the connector portion 240 can be varied according to the size of the electrode connector 150 to be connected. Furthermore, Figure 4 The number, shape, arrangement and / or configuration of the components 300 shown are arbitrary and this disclosure is not limited thereto.

[0113] The structure of the connector portion 240 is described below, but this can also be applied to external connection terminals connected to external loads. The structure of the connector portion 240 described below can also be applied to external connection terminals.

[0114] The protection circuit module 210 according to one or more embodiments may include a substrate 220, a component 300 mounted on the substrate 220, and a terminal block connection portion 240 on the substrate 220 spaced apart (e.g., spaced apart) from the component 300 and connected to the electrode terminal block 150. In one or more embodiments, a first barrier 410 and a second barrier 420 may be formed on the terminal block connection portion 240 facing each other. In one or more embodiments, the first barrier 410 and the second barrier 420 may be elongated barrier members formed in a direction generally parallel to the direction in which the electrode terminal block 150 is inserted.

[0115] Multiple components 300 can be mounted in various arrangements at various locations on the substrate 220 to realize the function of the protection circuit module 210. Therefore, the first barrier 410 and the second barrier 420 can be formed in various shapes and arrangements at various locations.

[0116] refer to Figure 4 According to one or more embodiments, the first barrier 410 and the second barrier 420 of the protection circuit module 210 may be formed at opposite ends of the tab connection portion 240 (e.g., one surface of the tab connection portion 240). In this disclosure, opposite ends of the tab connection portion 240 refer to opposite ends that are generally parallel to the direction of insertion of the electrode tab 150. The protection circuit module 210 according to one or more embodiments may include only the first barrier 410 or the second barrier 420 formed at one of the opposite ends of one surface of the tab connection portion 240.

[0117] refer to Figure 4 According to one or more embodiments, the first barrier 410 and the second barrier 420 of the protection circuit module 210 can be parallel to each other (e.g., the longitudinal direction of the first barrier 410 and the longitudinal direction of the second barrier 420 can be parallel to each other). In one or more embodiments, the first barrier 410 and the second barrier 420 can also be parallel to the ends of the electrode terminals 150 of the battery cell 100 that are connected to the terminal connection portions 240. The lengths of the first barrier 410 and the second barrier 420 can be equal to the lengths of the opposite ends of the terminal connection portions 240. In this case, during the process of manufacturing the battery assembly, for example, during the process of inserting the protection circuit module 210 into the battery cell 100 mounted on a welding jig, the likelihood of contact between the electrode terminals 150 and the component 300 is reduced by the first barrier 410 and the second barrier 420, thereby more effectively preventing short circuits.

[0118] The spacing between the first barrier 410 and the second barrier 420 of the protection circuit module 210 according to one or more embodiments can be varied. For example, the spacing between the first barrier 410 and the second barrier 420 can narrow with the protruding direction of the electrode tab 150. In one or more embodiments, the first barrier 410 and the second barrier 420 can be formed to converge when the first barrier 410 and the second barrier 420 approach the long side of the substrate 220 (e.g., the portion farther from the battery cell 100). In this case, the shape of the electrode tab 150 can be varied such that the electrode tab 150 can be inserted between the first barrier 410 and the second barrier 420. For example, the electrode tab 150 can be formed in a generally triangular shape.

[0119] like Figure 4As shown, the first barrier 410 and the second barrier 420 may be formed at both the positive electrode contact portion 240 and the negative electrode contact portion 240 included in the contact portion 240. In one or more embodiments, the first barrier 410 and the second barrier 420 may be formed at only one of the positive electrode contact portion 240 and the negative electrode contact portion 240. In one or more embodiments, the first barrier 410 or the second barrier 420 may be formed at only one of the opposite ends of the positive electrode contact portion 240 or the negative electrode contact portion 240.

[0120] According to one or more embodiments, the risk of a short circuit due to contact between the electrode tab 150 and the component 300 can be reduced by the first barrier 410 and the second barrier 420. Therefore, the component 300, in reference to... Figure 3 The described protection circuit module 210 can be installed closer to the terminal block connection portion 240.

[0121] Therefore, according to one or more embodiments, the spacing L2 between the terminal block connection portion 240 of the protection circuit module 210 and the component 300 can be less than Figure 3 The spacing between the connector mounting portion 240 of the protection circuit module 210 and the component 300 shown (e.g.) Figure 3 The interval distance L1).

[0122] therefore, Figure 4 The number of components 300 shown or the area occupied by components 300 can be greater than [the number of components 300 shown]. Figure 3 The number of components 300 shown or the area occupied by components 300. In one or more embodiments, Figure 4 The component mounting area on the substrate 220 (e.g., Figure 2 The component mounting area 230 can be larger than Figure 3 The component mounting area on the substrate 220. For example, refer to Figure 4 The number of components installed in the portion between the positive electrode terminal connection portion 240 and the negative electrode terminal connection portion 240 can be greater than the number of components installed in the portion between the positive electrode terminal connection portion 240 and the negative electrode terminal connection portion 240. Figure 3 The number of components in the corresponding section.

[0123] Figure 5 Example along the path where the barrier corresponds to the strip. Figure 4 The cross-sectional view taken by line A-A'. (Reference) Figure 5 The connector portion 240 can be located on the substrate 220 of the protection circuit module, and the electrode connector 150, the first barrier 510, and the second barrier 520 can be located on the connector portion 240. Redundant descriptions provided above are omitted.

[0124] In a protection circuit module according to one or more embodiments, at least one of the first barrier 510 and the second barrier 520 can be formed by providing an adhesive member. The adhesive member may include an insulating material. The adhesive member may be a member that is adhesive on at least one surface. For example, the adhesive member may be a tape or a coating. The tape may be, for example, a polyimide (PI) tape and / or a polyethylene terephthalate (PET) tape. The adhesive side of the tape or the coating may be attached to a surface of the connector portion 240. Forming a barrier at the end of the connector portion 240 using a tape or coating can prevent short circuits (e.g., achieve a short circuit prevention effect) without requiring complex processes.

[0125] refer to Figure 5 When the first barrier 510 and the second barrier 520 correspond to a strip, the first barrier 510 and the second barrier 520 may have a generally cuboid shape, but this disclosure is not limited thereto. In this disclosure, thickness and width refer to the results measured from the outermost point.

[0126] refer to Figure 5 In a battery assembly according to one or more embodiments, the thickness t1 of the first barrier 510 and the second barrier 520 may be less than or equal to the thickness t2 of the electrode tab 150. This may be to prevent the overall thickness of the protection circuit module from increasing due to the first barrier 510 and the second barrier 520.

[0127] Even when the thickness t1 of the first barrier 510 and the second barrier 520 is less than the thickness t2 of the electrode terminal piece 150, lateral movement between the battery cell and the protection circuit module during battery assembly manufacturing can be prevented. However, when the thickness t1 of the first barrier 510 and the second barrier 520 is less than half the thickness t2 of the electrode terminal piece 150, the electrode terminal piece 150 can move laterally and pass over the first barrier 510 or the second barrier 520 before it is fixed to the terminal piece connection portion 240 by welding or the like. Therefore, the thickness t1 of the first barrier 510 and the second barrier 520 can be greater than half the thickness t2 of the electrode terminal piece 150. Thus, the first barrier 510 and the second barrier 520 can prevent the electrode terminal piece 150 from contacting components (e.g., on the substrate 220). Figure 4 Component 300) contact.

[0128] In a battery assembly according to one or more embodiments, the width w1 of the tab connection portion 240 may be greater than or equal to the sum of the width w2 of the electrode tab 150, the width w3 of the first barrier 510, and the width w4 of the second barrier 520 (w2+w3+w4). In this case, the electrode tab 150 may be spaced apart from the first barrier 510 and the second barrier 520 (e.g., spaced apart), or may be in contact with at least one of the first barrier 510 or the second barrier 520. When the width w1 of the tab connection portion 240 is equal to the total width w2+w3+w4 of the electrode tab 150, the first barrier 510, and the second barrier 520, the electrode tab 150 may be in contact with the first barrier 510 and the second barrier 520.

[0129] In one or more embodiments, such as Figure 5 As shown, the electrode tab 150 may be spaced apart (e.g., spaced apart) from at least one of the first barrier 510 and the second barrier 520. As the width of the electrode tab 150 increases, the width w3 of the first barrier 510 and the width w4 of the second barrier 520 may be relatively reduced.

[0130] In one or more embodiments, the first barrier 510 and the second barrier 520 may be located at opposite ends of the connector portion 240 or inside the opposite ends of the connector portion 240. In one or more embodiments, where the first barrier 510 and the second barrier 520 correspond to a strip, a portion of the strip may protrude beyond the connector portion 240.

[0131] Figure 6 Example of a barrier corresponding to a coating agent along Figure 4 The cross-sectional view taken by line A-A'. Redundant descriptions provided above are omitted.

[0132] In one or more embodiments, the first barrier 510 and the second barrier 520 may be a coating agent. The coating agent may be an underfill coating material. The underfill coating material may be an insulating resin. Coating agents including underfill coating materials have excellent spreadability, therefore, the thickness t1 of the applied coating agent can be uniformly formed.

[0133] In one or more embodiments, the coating agent may be applied to the opposite ends of the connector portion 240 and then dried to form a shape with a constant thickness, such as... Figure 6 As shown in the diagram. For example, a constant shape can be a shape with a curved upper surface.

[0134] In a battery assembly according to one or more embodiments, the thickness t1 of the first barrier 510 and the second barrier 520 may be less than or equal to the thickness t2 of the electrode tab 150. This may be to prevent the overall thickness of the protection circuit module 210 from increasing due to the first barrier 510 and the second barrier 520.

[0135] Furthermore, even when the thickness t1 of the first barrier 510 and the second barrier 520 is less than the thickness t2 of the electrode terminal piece 150, lateral movement between the battery cell 100 and the protection circuit module 210 during the manufacturing of the battery assembly 200 can be prevented. However, when the thickness t1 of the first barrier 510 and the second barrier 520 is less than half the thickness t2 of the electrode terminal piece 150, the electrode terminal piece 150 can move laterally and pass over the first barrier 510 or the second barrier 520 before it is fixed to the terminal piece connection portion 240 by welding or the like. Therefore, the amount of coating agent discharged or loaded can be adjusted so that the thickness t1 of the first barrier 510 and the second barrier 520 is greater than half the thickness t2 of the electrode terminal piece 150.

[0136] In one or more embodiments, the width w1 of the terminal block connection portion 240 may be greater than or equal to the sum of the width w2 of the electrode terminal block 150, the width w3 of the first barrier 510, and the width w4 of the second barrier 520 (w2+w3+w4). Related descriptions and references Figure 5 The descriptions are the same, so they are omitted.

[0137] Figure 7 For example, when the barrier is in the bent shape of a connector section, along... Figure 4 A cross-sectional view taken from line A-A'.

[0138] In one or more embodiments, at least one of the first barrier 710 and the second barrier 720 may be configured such that the end of the connector portion 240 is bent upwards or is configured to be bent upwards from the end of the connector portion 240. The first barrier 710 and the second barrier 720 may be formed by vertically or upwardly bending an extension portion extending from the opposite end of the connector portion 240. The extension portion extending from the opposite end of the connector portion 240 may be made of the same material as the connector portion 240. The upwardly bent portion of the extension portion may form the thickness (or height) t3 of the first barrier 710 and the second barrier 720. In this case, the straight length of the extension portion may not be equal to the thickness t3 of the first barrier 710 and the second barrier 720 due to the bending shape of the barrier.

[0139] The thickness t4 of the connector portion 240 can be equal to the thickness of the extension portion, and the thickness t4 of the extension portion and the connector portion 240 can be thin enough to be bent.

[0140] refer to Figure 7 In the battery assembly 200 according to one or more embodiments, the thickness t3 of the first barrier 710 and the second barrier 720 may be less than or equal to the sum of the thickness t4 of the terminal connection portion 240 and the thickness t5 of the electrode terminal 150, t4+t5. This may be to prevent the overall thickness of the protection circuit module from increasing due to the first barrier 710 and the second barrier 720.

[0141] Furthermore, even when the thickness t3 of the first barrier 710 and the second barrier 720 is less than the sum of the thickness t4 of the terminal block connection portion 240 and the thickness t5 of the electrode terminal block 150 (t4+t5), lateral movement between the battery cell 100 and the protection circuit module 210 during the manufacturing of the battery assembly 200 can be prevented. However, if the thickness t3-t4 of the portion of the terminal block connection portion 240 removed from the thickness t3 of the first barrier 710 or the second barrier 720 is less than half the thickness t5 of the electrode terminal block 150, the electrode terminal block 150 can move laterally and cross the first barrier 710 or the second barrier 720 before being fixed to the terminal block connection portion 240 by welding or the like. Therefore, the thickness t3-t4 of the portion of the terminal block connection portion 240 removed from the thickness t3 of the first barrier 710 or the second barrier 720 can be greater than half the thickness t5 of the electrode terminal block 150. Thus, the first barrier 710 and the second barrier 720 can prevent the electrode terminal 150 from contacting components (e.g., on the substrate 220). Figure 4 Component 300) contact.

[0142] The barrier can be formed by bending the extended portion upwards, such that the thickness t3-t4 of the portion from the thickness t3 of the first barrier 710 or the second barrier 720 minus the thickness t4 of the connecting portion 240 is greater than half the thickness t5 of the electrode connecting portion 150.

[0143] refer to Figure 7 The arrangement surface of the terminal block connection portion 240 can refer to the area of ​​the terminal block connection portion 240 where the electrode terminal block 150 can be connected, or the area where the terminal block connection portion 240 is mounted on the substrate 220. In one or more embodiments, the width w5 of the arrangement surface of the terminal block connection portion 240 can be greater than or equal to the width w6 of the electrode terminal block 150. In this case, when manufacturing a battery assembly, the electrode terminal block 150 can move laterally within the arrangement surface of the terminal block connection portion 240.

[0144] The electrode tab 150 can be fixed to the tab connection portion 240 by welding or the like at a location within the arrangement surface that is spaced apart (e.g., spaced apart) from the first barrier 710 and the second barrier 720. In one or more embodiments, the electrode tab 150 can be electrically connected to the center of the arrangement surface of the tab connection portion 240 by welding or the like.

[0145] In one or more embodiments, one of the first barrier and the second barrier formed at opposite ends of the connector portion 240 may correspond to an adhesive member, and the other may be formed by bending upwards the end of the connector portion 240 (e.g., an extension portion extending from the end), as shown below. Figure 7 As shown. The combination of the first barrier 710 and the second barrier 720 can correspond to various combinations of barriers according to various embodiments of this disclosure.

[0146] According to one or more embodiments, even when the external connection terminal is located in the protection circuit module (e.g. Figure 4 In the case of the protection circuit module 210) on the substrate 220, the first barrier 510 and 710 and the second barrier 520 and 720 of this disclosure may also be formed as described above.

[0147] Figure 8 A flowchart illustrating a method for manufacturing a battery assembly according to one or more embodiments of the present disclosure is provided. Redundant descriptions provided above are omitted.

[0148] A method for manufacturing a battery assembly according to one or more embodiments of the present disclosure may include providing a battery cell (S810) including an electrode assembly and a housing configured to house the electrode assembly, the electrode assembly having electrode tabs connected to the electrode assembly and extending outward from the housing.

[0149] The method may then include providing a protection circuit module (S820) comprising a substrate, components mounted on the substrate, and terminal block connection portions spaced apart (e.g., spaced apart) from the components on the substrate, with electrode terminals connected to the terminal block connection portions. A first barrier and a second barrier may be formed on the terminal block connection portions facing each other.

[0150] The method may then include aligning the battery cell and the protection circuit module such that the electrode terminals and the terminal connection portions forming the barriers face each other (S830). As described above, the alignment of the battery cell and the protection circuit module can be achieved using a welding fixture or the like. In this case, the electrode terminals of the battery cell can be inserted between the first and second barriers of the terminal connection portions.

[0151] The method may then include electrically connecting the battery cell and the protection circuit module (S840) by connecting (through welding or other means) the terminal connecting portion and the electrode terminal.

[0152] In one or more embodiments, providing the protection circuit module operation S820 may include arranging a first barrier and a second barrier at opposite ends of a tab connection portion (e.g., one surface of the tab connection portion). For example, if the first barrier and / or the second barrier corresponds to a strip, a strip of a specific size may be attached to the opposite end of one surface of the tab connection portion. As another example, if the first barrier and / or the second barrier corresponds to a coating agent, a specific amount or load of coating agent may be applied to the opposite end of one surface of the tab connection portion, and then the applied coating agent may be allowed to dry.

[0153] Figure 8 The flowcharts and descriptions above are merely examples of this disclosure, and the scope of this disclosure is not limited to... Figure 8 The flowchart and the above description, and including Figure 10 The flowchart and the above description. For example, one or more steps in the flowchart and the above description can be added / changed / deleted, the order of one or more steps can be changed, and one or more steps can be performed together (e.g., simultaneously).

[0154] Figure 9 and Figure 10 The diagram illustrates a method for manufacturing a barrier according to one or more embodiments of the present disclosure. Figure 9 and Figure 10 Examples are used to describe the manufacturing reference. Figure 7 A diagram illustrating the barrier method described above. Redundant descriptions provided above are omitted.

[0155] refer to Figure 9 and Figure 10 The operation of arranging the first barrier 710 and the second barrier 720 at opposite ends of the connector portion 240 (e.g., a surface of the connector portion 240) may include forming an extension portion 910 by extending the end of the connector portion 240 and forming the first barrier 710 and the second barrier 720 by bending the extension portion 910 upward.

[0156] According to one or more embodiments, the length of the terminal block connection portion 240 may be extended to form an extension portion 910 using a component made of the same material as the terminal block connection portion 240. (See above reference...) Figure 7The widths w7 and w8 of the extension portion 910 may differ from the thickness t3 of the first barrier and / or the second barrier 710 and 720. Furthermore, the widths w7 and w8 of the extension portion 910 may be manufactured such that the thickness t3 of the first barrier 710 or the second barrier 720 after the extension portion 910 is bent upwards may be less than or equal to the electrode tab (e.g., Figure 7 The thickness of the electrode tab 150 and the thickness t4 of the tab connection portion 240 are the sum of the thicknesses. In the area where bending occurs, for example, bending may be performed at the boundary between the portion corresponding to the width w5 of the arrangement surface of the tab connection portion 240 and the extension portion 910. The tab connection portion 240 manufactured as described above may be located on the substrate (e.g., Figure 7 On the substrate 220).

[0157] While this disclosure has been described above with reference to embodiments thereof, it is not limited thereto. Various modifications and variations can be made by those skilled in the art within the spirit and equivalent scope of the claims.

Claims

1. A protection circuit module, comprising: substrate; Components, on the substrate; as well as The terminal connection portion is spaced apart from the component on the substrate and is used to connect to the electrode terminals of the battery cell. The first barrier and the second barrier are located on the connection portion of the connector and face each other.

2. The protection circuit module according to claim 1, wherein the longitudinal direction of the first barrier and the longitudinal direction of the second barrier are parallel to each other.

3. The protection circuit module according to claim 1, wherein at least one of the first barrier and the second barrier is formed by arranging adhesive members.

4. The protection circuit module according to claim 3, wherein the adhesive member is at least one of a tape and a coating agent.

5. The protection circuit module according to any one of claims 1 to 4, wherein the first barrier and the second barrier are located at opposite ends of the terminal block connection portion.

6. The protection circuit module according to any one of claims 1 to 4, wherein the first barrier and the second barrier are bent upward from the end of the terminal block connection portion.

7. A battery assembly, comprising: A battery cell includes an electrode assembly and a housing, the electrode assembly having electrode tabs, the housing being configured to house the electrode assembly and the electrode tabs extending outward from the housing; as well as The protection circuit module includes a substrate, components mounted on the substrate, and a terminal connection portion on the substrate that is spaced apart from the components and connected to the electrode terminals. The first barrier and the second barrier are located on the connection portion of the connector and face each other.

8. The battery assembly of claim 7, wherein the terminal connection portion comprises a positive electrode terminal connection portion and a negative electrode terminal connection portion, and The component is located on the substrate between the positive electrode terminal block connection portion and the negative electrode terminal block connection portion.

9. The battery assembly of claim 7, wherein the connection between the terminal block connection portion and the electrode terminal block is formed by welding.

10. The battery assembly of claim 7, wherein the longitudinal direction of the first barrier and the longitudinal direction of the second barrier are parallel to each other.

11. The battery assembly of claim 7, wherein at least one of the first barrier and the second barrier is formed by arranging adhesive members.

12. The battery assembly of claim 7, wherein the thickness of each of the first barrier and the second barrier is less than or equal to the thickness of the electrode tab.

13. The battery assembly of claim 7, wherein the width of the terminal block connection portion is greater than or equal to the sum of the widths of the electrode terminal block, the first barrier, and the second barrier.

14. The battery assembly of claim 7, wherein the first barrier and the second barrier are bent upward from the end of the terminal block connection portion.

15. The battery assembly of claim 14, wherein the thickness of each of the first barrier and the second barrier is less than or equal to the sum of the thickness of the terminal block connection portion and the thickness of the electrode terminal block.

16. The battery assembly of claim 14, wherein the width of the arrangement surface of the terminal block connection portion is greater than or equal to the width of the electrode terminal block.

17. The battery assembly according to any one of claims 7 to 16, wherein the housing comprises a pouch and a sealing portion, and The electrode terminals extend outward from the sealed portion.

18. A method for manufacturing a battery assembly, the method comprising: A battery cell is provided, the battery cell including an electrode assembly and a housing, the electrode assembly having electrode terminals, the housing being configured to house the electrode assembly and the electrode terminals extending outward from the housing; A protection circuit module is provided, the protection circuit module including a substrate, a component mounted on the substrate, and a terminal connection portion on the substrate spaced apart from the component and for connecting to the electrode terminal; Align the battery cell and the protection circuit module so that the electrode terminals and the barrier-formed terminal connection portions face each other; as well as The battery cell and the protection circuit module are electrically connected by connecting the terminal block and the electrode terminal block. The barriers include a first barrier and a second barrier on the connection portion of the connector and facing each other.

19. The method of claim 18, wherein providing the protection circuit module includes arranging the first barrier and the second barrier at opposite ends of the terminal block connection portion.

20. The method of claim 19, wherein arranging the first barrier and the second barrier at the opposite ends of the connector portion comprises: An extension portion is formed by extending the end of the connector portion; The first barrier and the second barrier are formed by bending the extended portion upwards.

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