Battery Pack Module

Abstract

A battery pack module according to one embodiment of the present invention includes a first battery pack including a plurality of first fitting portions, a second battery pack including a plurality of second fitting portions and arranged adjacent to the first battery pack, and a plurality of fixing members coupled together to the first fitting portions and the second fitting portions to connect the first battery pack and the second battery pack, each fixing member including two first pins having a portion fixed to the first fitting portion of the first battery pack and another portion fitted and coupled to the second fitting portion of the second battery pack, and a second pin connecting the two first pins.

Description

[Technical Field]

[0001] The present invention relates to a battery pack module and an electric vehicle equipped with the battery pack module.

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0165326, dated December 1, 2022, and all contents disclosed in the documents of this Korean patent application are incorporated herein by reference. [Background technology]

[0003] Generally, battery packs can be used as an uninterruptible power supply (UPS) to supply power to facilities or equipment when an emergency power supply for a building occurs, when a power outage occurs at an industrial site, or when enjoying leisure activities such as camping.

[0004] For example, the battery pack described above has a structure in which a plurality of unit modules, each of which is a unit battery that serves as a rechargeable secondary battery and is packaged in a case, are continuously arranged (stacked), and these unit modules are electrically connected.

[0005] Here, the unit modules are electrically connected via a bar-shaped bus bar, which is connected to a bus plate (terminal) provided on the unit battery by a bolt or the like, thereby electrically connecting the unit modules.

[0006] That is, holes for fastening bolts are drilled in the bus plate of the unit battery, and the bus bar and the bus plate are joined with bolts through the drilled holes, thereby electrically connecting the unit modules.

[0007] On the other hand, Patent Document 1 discloses a battery pack in which a plurality of battery modules are stacked.

[0008] However, the disclosed battery pack has a problem in that the structure of the battery pack is complicated because many parts such as an upper frame, a lower frame, side supports, and end plates are required to support a large number of unit battery cells during the manufacturing of the battery module. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Korean Patent No. 10-1234235 Summary of the Invention [Problem to be solved by the invention]

[0010] An object of the present invention is to provide a battery pack module that can minimize the gap between adjacent battery packs and prevent twisting or loosening of the battery packs. [Means for solving the problem]

[0011] In order to solve the above-mentioned problems, a battery pack module according to one embodiment of the present invention includes a first battery pack including a plurality of first fitting portions, a second battery pack including a plurality of second fitting portions and arranged adjacent to the first battery pack, and a plurality of fixing members coupled together to the first fitting portions and the second fitting portions to connect the first battery pack and the second battery pack.

[0012] Each fixing member also includes two first pins, some of which are fixed to the first fitting portion of the first battery pack and other of which are fitted and coupled to the second fitting portion of the second battery pack, and a second pin connecting the two first pins.

[0013] The first and second recesses may be formed at an end of the first battery pack and an end of the second battery pack where the first and second battery packs face each other, respectively.

[0014] The fixing member may also connect the first and second battery packs via four fixing regions that are fitted and coupled with two first fitting portions of the first battery pack and two second fitting portions of the second battery pack.

[0015] The first pin may be arranged along the longitudinal direction of the first battery pack, and the second pin may be arranged perpendicular to the first pin.

[0016] The first pin may also include a body having a first width and being engaged with the first engaging portion and the second engaging portion, respectively, and end portions having a second width larger than the first width and formed at both ends of the body.

[0017] In addition, in the fixing member, the two first pins are arranged at a predetermined interval, and the interval may be within a range of 1.0 mm to 5 mm.

[0018] The length of the first pin may be within a range of 5 mm to 10 mm.

[0019] The first fitting portion and the second fitting portion may each be a semi-annular fitting portion having an opening for inserting the first pin. The first fitting portion and the second fitting portion may each be configured so that the size of the opening can be adjusted by an external force when the first pin is inserted.

[0020] In addition, in the fixing member, the two first fitting portions may be fitted and coupled to the upper ends of the two first pins, respectively, and the two second fitting portions may be fitted and coupled to the lower ends of the two first pins that are fitted and coupled to the first fitting portions, respectively.

[0021] Additionally, at least one of the first battery pack and the second battery pack may include one or more third mating portions matingly coupled with the second pins of the fixing member.

[0022] At least one of the plurality of third fitting portions may be provided on the first battery pack, and at least one may be provided on the second battery pack.

[0023] Furthermore, each third fitting portion may be a semi-annular fitting portion having an opening for inserting the second pin, and each third fitting portion may be configured so that the size of the opening can be adjusted by an external force when the second pin is inserted.

[0024] In addition, the fixing member may connect the first and second battery packs via five fixing regions that respectively engage with two first fitting portions of the first battery pack, two second fitting portions, and one third fitting portion of the second battery pack.

[0025] The securing member may also include a polycarbonate extrusion.

[0026] An electric vehicle according to an aspect of the present invention may include the battery pack module. The battery pack module is attached to the electric vehicle to supply power to a motor serving as a drive source. [Effects of the Invention]

[0027] As described above, according to at least one aspect of the battery pack module of the present invention, the fixing members fixed to each of the two adjacent battery packs in order to connect the adjacent battery packs can minimize the gap between the adjacent battery packs, thereby preventing twisting or loosening of the battery packs. [Brief explanation of the drawings]

[0028] [Figure 1]1 is a diagram schematically illustrating a battery pack module according to an embodiment of the present invention. [Figure 2] FIG. [Figure 3] 3A is a cross-sectional view taken along line BB in FIG. 2, and FIG. 3B is a cross-sectional view taken along line CC in FIG. [Figure 4] FIG. 10 is a view showing a first fitting portion. [Figure 5] FIG. 10 is a view showing a state in which the fixing member is fitted and coupled; [Figure 6] 4A and 4B are diagrams showing the positions where first and second fitting portions are formed in the first and second battery packs. [Figure 7] FIG. 10 is a diagram showing a third fitting portion. [Figure 8] 1 is a schematic diagram illustrating an electric transportation means according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, a battery pack module according to an embodiment of the present invention and an electric vehicle equipped with the battery pack module will be described in detail with reference to the accompanying drawings.

[0030] Regardless of the drawing symbols, identical or corresponding components will be given the same or similar reference numbers, and duplicate descriptions thereof will be omitted. The size and shape of each component shown for convenience of explanation may be exaggerated or reduced.

[0031] FIG. 1 is a diagram schematically illustrating a battery pack module 1 according to one embodiment of the present invention, FIG. 2 is a diagram illustrating a fixing member 300, FIG. 3(a) is a cross-sectional view taken along line BB in FIG. 2, and FIG. 3(b) is a cross-sectional view taken along line CC in FIG. 2.

[0032] 4 is a diagram showing the first fitting portion 110, FIG. 5 is a diagram showing the state in which the fixing member 300 is fitted and coupled, and is a detailed diagram of part A in FIG. 1, and FIG. 6 is a diagram showing the formation positions of the first fitting portion and the second fitting portion in the first battery pack and the second battery pack.

[0033] A battery pack module 1 according to one embodiment of the present invention includes a plurality of battery packs 100, 200 and a plurality of fastening members 300 connecting two adjacent battery packs 100, 200. The plurality of battery packs 100, 200 may have the same structure. As an example, the battery pack module 1 includes a first battery pack 100, a second battery pack 200, and a plurality of fastening members 300.

[0034] The first battery pack 100 includes a plurality of first recesses 110. The first battery pack 100 may include an accommodating space 101 that accommodates battery cells, and a case 102 that surrounds the accommodating space 101.

[0035] A plurality of accommodating spaces 101 are provided within the case 102, and each accommodating space 101 may accommodate a battery cell. The battery cells may be cylindrical or prismatic. The first battery pack 100 may include a plurality of battery cells and a case 102 having a plurality of accommodating spaces 101 that accommodate the respective battery cells. The case 102 may have a shape that extends along a longitudinal direction L1, and each battery cell may be inserted into the accommodating space 101 along the longitudinal direction L1 of the case 102.

[0036] In addition, the plurality of first recesses 110 may be provided on the outer surface of the case 102. For example, the plurality of first recesses 110 may be formed to protrude outward from the case 102.

[0037] The case 102 may have a recessed shape inward at a boundary region 102a between two adjacent receiving spaces 101. In particular, when the first fitting portions 110 are located in the recessed portion, the utilization of the external space of the case 102 can be improved, and the effect of preventing the fixing member 300 from coming off can be expected.

[0038] The second battery pack 200 includes a plurality of second recesses 210. The second recesses 210 have the same structure as the first recesses 110, and for ease of explanation, the recesses formed in the first battery pack 100 will be referred to as the first recesses 110 and the recesses formed in the second battery pack 200 will be referred to as the second recesses 210 in this specification.

[0039] The second battery pack 200 may include an accommodation space (not shown) that accommodates battery cells and a case 202 that surrounds the accommodation space. In this manner, the second battery pack 200 may have a structure similar to that of the first battery pack 100 and may include a case 202 that has a plurality of accommodation spaces.

[0040] The case 202 may be provided with a plurality of accommodating spaces, each of which may accommodate a battery cell. The battery cells may be cylindrical or prismatic. The second battery pack 200 may include a plurality of battery cells and a case 202 having a plurality of accommodating spaces for accommodating the respective battery cells. The case 202 may have a shape extending along a longitudinal direction L2, and each battery cell may be inserted into the accommodating space along the longitudinal direction L2 of the case 202.

[0041] In addition, the plurality of second recesses 210 may be provided on the outer surface of the case 202. For example, the plurality of second recesses 210 may be formed to protrude outward from the case 202.

[0042] The case 202 may have a concave shape at a boundary region 202a between two adjacent receiving spaces. In particular, when the second recesses 210 are located in the concave portion, the utilization of the external space of the case 202 can be improved, and the effect of preventing the fixing member 300 from coming off can be expected.

[0043] Also, the second battery pack 200 is disposed adjacent to the first battery pack 100. The second battery pack 200 may be disposed in series with the first battery pack 100. The series arrangement means that the first battery pack 100 and the second battery pack 200 are disposed adjacent to each other in a line along the longitudinal direction L1, L2. Referring to FIG. 1 , the lower end 100a of the first battery pack 100 and the upper end 200a of the second battery pack 200 are disposed adjacent to each other along the longitudinal direction L1, L2, and the lower end 100a of the first battery pack 100 and the upper end 200a of the second battery pack 200 may be in direct contact with each other at least in part, or may be spaced apart by a predetermined distance as described below.

[0044] For example, in the series arrangement, referring to part A of FIG. 1 , the lower end 100a of the first battery pack 100 and the upper end 200a of the second battery pack 200 may be connected by a plurality of fixing members 300. In addition, a first fitting portion (not shown) formed at the upper end of the first battery pack 100 may be a portion for connecting with a third battery pack (not shown) arranged in series with the upper end of the first battery pack 100. In addition, a second fitting portion (not shown) formed at the lower end of the second battery pack 200 may be a portion for connecting with a fourth battery pack (not shown) arranged in series with the lower end of the second battery pack 200.

[0045] That is, the battery pack module 1 has a structure in which a plurality of battery packs 100, 200 are arranged in series, and two adjacent battery packs can be connected and fixed by a plurality of fixing members 300.

[0046] The fixing members 300 are coupled to the first and second fitting portions 110 and 210 to connect the first and second battery packs 100 and 200, respectively.

[0047] 2 and 5, each fixing member 300 includes a plurality of first pins 310, some of which are inserted into and fixed to the first fitting portion 110 of the first battery pack 100 and other of which are inserted into and fitted into the second fitting portion 210 of the second battery pack 200, and a second pin 320 that connects two adjacent first pins 310.

[0048] The fixing member 300 may be an H-shaped fixing member having an "H" shape in which two first pins 310 and one second pin 320 are integrally connected. The H-shaped fixing member 300 may have a structure in which two first pins 310 are spaced apart by a predetermined distance d, and the second pin 320 connects the two first pins 310 at the same distance.

[0049] In this specification, a battery pack module 1 includes a plurality of battery packs 100, 200 coupled via a fixing member 300, and each battery pack 100, 200 includes a case and battery cells disposed within the case. While Fig. 1 shows a structure in which two battery packs 100, 200 are coupled, the battery pack module 1 may include a structure in which three or more battery packs are connected. The fixing member 300 serves to connect and fix two adjacent battery packs.

[0050] The battery pack module according to the present application has the first battery pack 100 and the second battery pack 200 connected and fixed by the fixing member 300 having the special structure, which can improve the connection strength between the battery packs, minimize the gap between the battery packs, and prevent twisting or loosening of the battery packs.

[0051] In one example, the first and second recesses 110 and 210 may be formed at the lower end 100a of the first battery pack and the upper end 200a of the second battery pack, respectively, where the first and second battery packs 100 and 200 are adjacent to each other. In addition, when three or more battery packs are to be connected, the recesses may be formed on the edges of both ends of the battery packs.

[0052] The plurality of first recesses 110 may be spaced apart along the edges of the upper and lower ends 100a of the first battery pack 100, and the second recesses 210 may be spaced apart along the edges of the upper and lower ends 200a of the second battery pack 200.

[0053] Specifically, referring to Figures 1 and 5, when the second battery pack 200 and the first battery pack 100 are arranged in series so that the lower end 100a of the first battery pack 100 faces the upper end 200a of the second battery pack 200, the two first fitting portions 110 of the first battery pack 100 and the two second fitting portions 210 of the second battery pack 200 form one set of fastening regions, which are spaced apart along the circumferential direction of each battery pack in set units, and one fixing member 300 can be fitted and coupled to one set.

[0054] In a specific embodiment, the fixing member 300 may connect the first battery pack 100 and the second battery pack 200 via four fixing regions that are fitted and coupled with the two first fitting portions 110 of the first battery pack 100 and the two second fitting portions 210 of the second battery pack 200. The fixing member 300 has four fixing regions, which improves the connection strength between the battery packs, minimizes the spacing between the battery packs, and prevents twisting or loosening of the battery packs.

[0055] 1 and 2, specifically, the first pin 310 may be arranged along the longitudinal direction L1 (y-axis direction) of the first battery pack 100, and the second pin 320 may be arranged perpendicular to the first pin 310 (x-axis direction). The first pin 310 and the second pin 320 may be integrally connected by injection molding. Both ends of the second pin 320 may be connected to the center portions of the two first pins 310. In addition, the pair of first pins 310 may have symmetrical shapes with respect to the second pin 320.

[0056] Referring to Figures 2, 3, and 4, the first pin 310 may include a main body 311 having a first width R1 (also referred to as a "diameter") and matingly coupled with the first mating portion 110 and the second mating portion 210, respectively, and end portions 313 having a second width R2 (also referred to as a "diameter") larger than the first width R1 and formed at both ends of the main body 311.

[0057] The first pin 310 may have a larger width at the end 313 than at the body 311, and as an example, the body 311 and the end 313 may have an "I" shape. The end 313 of the first pin 320 serves to prevent the bodies from separating when they are fitted together.

[0058] Furthermore, the main body 311 may have a shape extending along the longitudinal direction L1 of the first battery pack 100, and the end portion 313 may have a shape extending along a direction perpendicular to the main body 311.

[0059] The body 311 and the end portion 313 of the first pin 310 may each be a member having a circular or polygonal cross section. In particular, when the body 311 and the end portion 313 have a circular cross section, the first width R1 may be a first diameter, and the second width R2 may be a second diameter.

[0060] 4, in one embodiment of the present invention, a first connecting member 112 may be provided that connects the first fitting portion 110 to the case 102 such that the first fitting portion 110 is positioned a predetermined distance away from the outer surface of the case 102 of the first battery pack 100. The first connecting member 112 may prevent the end portion 313 of the first pin 310 from coming into contact with the case 102 of the first battery pack 100 when the first pin 310 is fitted and coupled.

[0061] 4, in one embodiment of the present invention, a second connecting member 212 may be provided that connects the second fitting portion 210 to the case 102 such that the second fitting portion 210 is positioned a predetermined distance away from the outer surface of the case 202 of the second battery pack 200. The second connecting member 212 may prevent the end portion 313 of the first pin 310 from coming into contact with the case 202 of the second battery pack 200 when the first pin 310 is fitted and coupled.

[0062] In the fixing member 300, the two first pins 310 are spaced apart by a predetermined distance d, which may be within a range of 1.0 mm to 5 mm. When the distance d between the two first pins 310 is within this range, the connection strength between the battery packs is improved, the distance between the battery packs is minimized, and twisting or loosening of the battery packs is prevented.

[0063] Furthermore, the length h of the first pin 310 may be within a range of 5 mm to 10 mm. When the length h of the first pin 310 satisfies this range, the effects of improving the connection strength between the battery packs, minimizing the gap between the battery packs, and preventing twisting or loosening of the battery packs are exhibited.

[0064] In one example, the first fitting portion 110 and the second fitting portion 210 are semi-annular fitting portions having openings 111 and 211 for inserting the first pin 310, respectively, and the size of the openings 111 and 211 may be adjustable by an external force when inserting the first pin 310. That is, the openings 111 and 211 of the first fitting portion 110 and the second fitting portion 210 may be exposed in opposite directions to the outer surfaces of the battery packs 100 and 200 to facilitate fitting and coupling the first pin 310.

[0065] Referring to Figures 2 and 5, in one example, two first engaging portions 110 may be engaged with the upper ends of two first pins 310, respectively, and two second engaging portions 210 may be engaged with the lower ends of the two first pins 310 that are engaged with the first engaging portions 110, respectively.

[0066] FIG. 7 is a diagram showing the third fitting portions 120 and 220. As shown in FIG.

[0067] 5 to 7 , at least one of the first battery pack 100 and the second battery pack 200 may include one or more third engaging portions 120, 220 that are matingly coupled to the second pin 320 of the fixing member 300. For example, at least two or more third engaging portions 120, 220 may be provided. The plurality of third engaging portions 120, 220 may be matingly coupled to the second pin 320, and the plurality of third engaging portions 120, 220 may be mated to both ends of the first battery pack 100 and the second battery pack 200 along a direction perpendicular to the longitudinal directions L1, L2 of the first battery pack 100 and the second battery pack 200, respectively.

[0068] The third fitting portions 120, 220 are semi-annular fitting portions having openings 121, 221 for inserting the second pin 320, and the size of the openings 121, 221 may be adjustable by an external force when the second pin 320 is inserted. That is, the openings 121, 221 of the third fitting portions 120, 220 may be exposed in a direction opposite to a direction facing the outer surface of the battery pack 100, 200 to facilitate insertion and coupling of the second pin 320.

[0069] 7, second connecting members 122, 222 may be provided to connect the third fitting portions 120, 220 to the cases 102, 202 of the respective battery packs 100, 200 so that the third fitting portions 120, 220 are positioned away from the cases 102, 202 of the respective battery packs 100, 200. The second connecting members 122, 222 may prevent the second pins 310 from contacting the cases 102, 202 of the respective battery packs 100, 200 in a fitted and coupled state.

[0070] At least one of the plurality of third fitting portions 120, 220 may be provided on the first battery pack 100, and at least one may be provided on the second battery pack 200.

[0071] Of the plurality of third fitting portions 120, 220, two adjacent third fitting portions 120, 220 may be arranged alternately with each other along the circumferential direction of the battery module 1. For example, two adjacent third fitting portions 120, 220 may be provided in different battery packs, and one of the two adjacent third fitting portions 120, 220 may be provided in the first battery pack 100, and the other third fitting portion 220 may be provided in the second battery pack 200. That is, the other third fitting portion 220 adjacent to the third fitting portion 120 formed in the first battery pack 100 may be formed in the second battery pack 200.

[0072] Referring to FIG. 6 , when the second battery pack 200 and the first battery pack 100 are arranged in series such that the lower end 100a of the first battery pack 100 faces the upper end 200a of the second battery pack 200, and multiple fastening members are fastened, one fastening member may be fastened to the two first fitting portions 110A of the first battery pack 100, one third fitting portion 120 of the first battery pack 100, and two second fitting portions 210A of the second battery pack 200, and another fastening member may be fastened to the two first fitting portions 110B of the first battery pack 100, one third fitting portion 220 of the second battery pack 200, and two second fitting portions 210B of the second battery pack 200.

[0073] As described above, two adjacent third fitting portions 120, 220 are provided alternately in the first battery pack 100 and the second battery pack 200, respectively, which can improve the connection strength between the battery packs, minimize the spacing between the battery packs, and prevent twisting or loosening of the battery packs.

[0074] In a specific embodiment, the fixing member 300 may connect the first battery pack 100 and the second battery pack 200 via five fixing regions that are respectively fitted and coupled with two first fitting portions 110 of the first battery pack 100, two second fitting portions 210 of the second battery pack 200, and one third fitting portion 120, 220 of the first battery pack 100 or the second battery pack 200. Therefore, the fixing member 300 that connects the first battery pack 100 and the second battery pack 200 via five fixing regions can exhibit effects of better improving the connection strength between the battery packs, minimizing the gap between the battery packs, and preventing twisting or loosening of the battery packs.

[0075] In one example, the fixing member 300 may be injection-molded. The fixing member 300 may be made of polycarbonate injection molding. By making the fixing member 300 from polycarbonate injection molding, it is possible to improve the connection strength between the battery packs, minimize the gap between the battery packs, and prevent the battery packs from twisting or loosening.

[0076] FIG. 8 is a schematic diagram showing the configuration of an electric transportation means 500 according to one embodiment of the present invention.

[0077] The present application also relates to an electric vehicle 500. The electric vehicle 500 is equipped with the battery pack module 1 described above, and the type of the electric vehicle 500 is not particularly limited, and examples thereof include an electric car, a scooter, and an electric bicycle.

[0078] The preferred embodiments of the present invention described above have been disclosed for illustrative purposes, and those skilled in the art having ordinary skill in the art may make various modifications, changes, and additions within the spirit and scope of the present invention, and such modifications, changes, and additions should be considered to fall within the scope of the following claims. [Industrial Applicability]

[0079] According to at least one embodiment of the battery pack module of the present invention, the spacing between adjacent battery packs can be minimized by fastening members fixed to each battery pack to connect the two adjacent battery packs, thereby preventing twisting or loosening of the battery packs. [Explanation of symbols]

[0080] 1 Battery Pack Module 110 First fitting part 100 1st battery pack 210 Second fitting part 200 Second Battery Pack 300 Fixing member 310 First Pin 320 2nd pin

Claims

1. a first battery pack including a plurality of first fitting portions; a second battery pack including a plurality of second recesses and disposed adjacent to the first battery pack; a plurality of fixing members coupled together to the first fitting portion and the second fitting portion to connect the first battery pack and the second battery pack; Including, the fixing member includes two first pins, a part of which is fixed to a first fitting portion of the first battery pack and another part of which is fitted and coupled to a second fitting portion of the second battery pack, and a second pin connecting the two first pins; The first pin is arranged along a longitudinal direction of the first battery pack, and the second pin is arranged perpendicular to the first pin.

2. 2. The battery pack module according to claim 1, wherein the plurality of first fitting portions and the plurality of second fitting portions are formed at an end of the first battery pack and an end of the second battery pack where the first battery pack and the second battery pack face each other.

3. 2. The battery pack module of claim 1, wherein the fixing member connects the first battery pack and the second battery pack through four fixing regions that are fitted and coupled with two first fitting portions of the first battery pack and two second fitting portions of the second battery pack.

4. The first pin has a first width and a body that is mated with the first mating portion and the second mating portion, respectively; end portions formed at both ends of the body and having a second width greater than the first width; The battery pack module of claim 1 , comprising:

5. 2. The battery pack module according to claim 1, wherein the two first pins are spaced apart at a predetermined interval, the interval being within a range of 1.0 mm to 5 mm.

6. The battery pack module according to claim 1 , wherein the length of the first pin is within a range of 5 mm to 10 mm.

7. the first fitting portion and the second fitting portion are semi-annular fitting portions having an opening portion for inserting the first pin, The battery pack module according to claim 1 , wherein the size of the opening is adjustable by an external force when the first pin is inserted.

8. the two first fitting portions are fitted and coupled to the upper ends of the two first pins, respectively; The battery pack module of claim 1 , wherein the two second fitting portions are fitted to lower ends of the two first pins that are fitted to the first fitting portions, respectively.

9. The battery pack module according to claim 1 , wherein at least one of the first battery pack and the second battery pack includes one or more third engaging portions that are engaged with the second pins of the fixing members.

10. The battery pack module according to claim 9 , wherein at least one of the plurality of third fitting portions is provided on the first battery pack and at least one of the third fitting portions is provided on the second battery pack.

11. the third fitting portion is a semi-annular fitting portion having an opening for inserting the second pin, The battery pack module according to claim 9 , wherein the size of the opening is adjustable by an external force when the second pin is inserted.

12. 10. The battery pack module of claim 9, wherein the fixing member connects the first battery pack and the second battery pack through five fixing regions that respectively engage with two first fitting portions of the first battery pack, two second fitting portions of the second battery pack, and one third fitting portion.

13. The battery pack module according to claim 1 , wherein the fixing member comprises a polycarbonate injection molding.

14. An electric vehicle equipped with the battery pack module according to claim 1.

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