Sampling structure, battery pack and electric vehicle

Abstract

The present disclosure provides a sampling structure, a battery pack, and an electric vehicle. The sampling structure includes a battery information collecting unit, a plurality of fuses, and a plurality of collecting lines. A first end of the collecting line is connected to a corresponding battery, and a connection terminal is provided at a second end of the collecting line. A plurality of pads are provided on the battery information collecting unit. A first end of the fuse is welded to the corresponding connection terminal, and a second end of the fuse is welded to the corresponding pad. The collecting line and the battery information collecting unit of the present disclosure are welded via the fuse, and the fuse can fulfill not only a connection function but also an overcurrent protection function.

Description

[Technical field]

[0001] (Reference to Related Applications) This disclosure claims priority to a Chinese patent application bearing application number 202120653606.0 and title "Sampling Structure, Battery Pack and Electric Vehicle" filed with the China National Intellectual Property Office on March 30, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the field of batteries, and more particularly to sampling structures, battery packs and electric vehicles. [Background technology]

[0003] In the related art, a sampling structure is provided in a battery pack to collect battery-related information (including but not limited to temperature, voltage, etc.) Generally, the sampling structure is connected to a battery information collecting unit in a plug-in manner, and the battery information collecting unit is connected to a battery management system, receives the sampling information, performs conversion processing, and then transmits the received sampling information to the battery management system, so that a user can grasp the current operating status of the battery.

[0004] However, the above connection method used in the sampling structure and battery information collector is unreliable and requires additional fuses to ensure the safety of the entire circuit, which increases the cost of the battery pack. Summary of the Invention

[0005] The present disclosure aims to solve at least one of the technical problems in the prior art. To this end, a sampling structure according to a first aspect of the present disclosure includes a battery information collecting unit, a plurality of fuses, and a plurality of collecting lines, a first end of the collecting line is connected to a corresponding battery, a second end of the collecting line is provided with a connecting terminal, the battery information collecting unit is provided with a plurality of pads, and the first ends of the fuses are welded to the corresponding connecting terminals, and second ends of the fuses are welded to the corresponding pads.

[0006] In some embodiments of the present disclosure, the fuse, the connection terminal and the pad are bonded and welded, and the fuse is an aluminum wire.

[0007] In some embodiments of the present disclosure, the fuse has an arch shape.

[0008] In some embodiments of the present disclosure, the sampling structure further includes an insulating layer coated on the exterior of the plurality of collection lines, the insulating layer including a first insulating layer and a second insulating layer provided on opposite sides of the plurality of collection lines, a plurality of via holes are formed in the first insulating layer, and the portions of the collection lines exposed in the corresponding via holes form the connection terminals.

[0009] In some embodiments of the present disclosure, the sampling structure further includes a reinforcing plate, the reinforcing plate being fixed to a side of the second insulating layer away from the first insulating layer, and the projection of the connection terminal onto the second insulating layer being located within a range of the projection of the reinforcing plate onto the second insulating layer.

[0010] In some embodiments of the present disclosure, the battery information collection unit is provided on a side of the reinforcing plate away from the second insulating layer, a plurality of the pads are provided on a side of the battery information collection unit facing the reinforcing plate, a plurality of first through holes are formed in the sampling structure, the pads are exposed in corresponding first through holes, and a second end of the fuse is drilled into the corresponding first through holes and welded to the corresponding pads.

[0011] In some embodiments of the present disclosure, the battery information collecting unit is provided on a side of the first insulating layer away from the second insulating layer, a plurality of the pads are provided on the side of the battery information collecting unit away from the first insulating layer, a plurality of second through holes are formed in the battery information collecting unit, the connection terminals are exposed in corresponding second through holes, and a first end of the fuse is drilled into the corresponding second through holes and welded to the corresponding connection terminal.

[0012] In some embodiments of the present disclosure, the first insulating layer, the second insulating layer and the plurality of collecting lines form an FFC or FPC.

[0013] In some embodiments of the present disclosure, a collection terminal is provided at a first end of the collection line, and the collection line is connected to a corresponding battery via the corresponding collection terminal; a portion of the collecting line extends from the insulating layer to form the collecting terminal, or is exposed to the insulating layer and welded to the collecting terminal; The collecting lines are metal conductors and the collecting terminals are metal pieces.

[0014] In some embodiments of the present disclosure, the plurality of fuses and the plurality of collection lines form a sampling assembly, the sampling structure includes the plurality of sampling assemblies, the battery information collection unit has a plurality of welds, the welds are provided with a plurality of pads, and the pads at the welds are welded to corresponding collection lines via corresponding fuses of the sampling assembly.

[0015] In some embodiments of the present disclosure, the plurality of sampling assemblies and the plurality of weld pads are each arranged along the longitudinal direction of the battery information collection portion.

[0016] In another aspect, a battery pack according to the present disclosure includes a case, a battery management system, a plurality of electrically connected batteries, and a sampling structure as described in any of the preceding embodiments, wherein the sampling structure and the plurality of batteries are disposed within the case, and the sampling structure is connected to the battery management system and the plurality of batteries.

[0017] In yet another aspect, an electric vehicle according to the present disclosure includes a vehicle body and a battery pack described in any of the above embodiments, wherein the battery pack is fixed to the vehicle body or a box for the battery pack is configured as part of the vehicle body.

[0018] The beneficial effects of the present disclosure are as follows: In the sampling structure of the present disclosure, the first end of the collection line is connected to the corresponding battery, the second end of the collection line is provided with a connection terminal, a battery information collection unit is provided with a number of pads, the first end of the fuse is welded to the corresponding connection terminal, and the second end of the fuse is welded to the corresponding pad. Compared with the plug connection method, such a welding method can ensure the reliability of the connection between the collection line and the battery information collection unit, and the fuse can not only realize the connection between the collection line and the battery information collection unit, but also perform the overcurrent protection function, thus reducing the number of parts, which is helpful in reducing the cost of the battery pack and ensuring the safety of the entire sampling circuit. In addition, the collection line can transmit the collected battery information to the battery information collection unit, which can be processed by the battery information collection unit and then transmitted to the battery management system, and the operating status of the battery can be monitored, which is helpful in improving the safety of the use of the battery pack.

[0019] Additional aspects and advantages of the disclosure will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the disclosure. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 is an exploded view of a battery pack according to an embodiment of the present disclosure. [Diagram 2] FIG. 1 is a schematic diagram of a sampling structure and a connection to a battery according to one embodiment of the present disclosure (battery information collector and fuse omitted). [Diagram 3] FIG. 3 is an exploded view of FIG. 2. [Figure 4] FIG. 4 is an enlarged view of a portion A in FIG. [Diagram 5] FIG. 2 is a schematic diagram of a sampling structure according to one embodiment of the present disclosure. [Figure 6] FIG. 6 is an enlarged view of a portion B in FIG. 5. [Figure 7] 6 is a schematic configuration diagram of a battery information collecting unit in FIG. 5. [Figure 8] FIG. 2 is a schematic diagram of a sampling structure according to another embodiment of the present disclosure. [Figure 9] FIG. 9 is an enlarged view of a portion C in FIG. [Figure 10] 10 is a schematic configuration diagram of a battery information collecting unit in FIG. 9. [Figure 11] 1 is a schematic configuration diagram of an electric vehicle according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, the embodiments of the present disclosure will be described in detail, and examples of the embodiments are shown in the drawings, in which the same or similar reference numerals throughout represent the same or similar parts, or parts having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are merely for interpreting the present disclosure, and should not be understood as limiting the present disclosure.

[0022] In addition, in the description of the present disclosure, the orientations or positional relationships indicated by the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended to easily explain and simplify the present disclosure, and do not indicate or suggest that the illustrated devices or parts must have a specific orientation and be configured and operate in a specific orientation, and therefore should not be understood as limiting the present disclosure.

[0023] 1 to 5 , the present disclosure provides a battery pack 100 including a sampling structure 10, a case 30, a battery management system 40, and a plurality of electrically connected batteries 20. The sampling structure 10 and the plurality of batteries 20 are disposed within the case 30, and the sampling structure 10 is connected to the battery management system 40 and the plurality of batteries 20.

[0024] The sampling structure 10 includes a battery information collecting unit 101, a plurality of fuses 102 and a plurality of collecting lines 103, a first end 1031 of the collecting line 103 being connected to a corresponding battery 20, a connection terminal 104 being provided at a second end 1032 of the collecting line 103, a plurality of pads 105 being provided on the battery information collecting unit 101, and a first end of the fuse 102 being welded to the corresponding connection terminal 104 and a second end being welded to the corresponding pad 105.

[0025] In the sampling structure 10 of the present disclosure, the first end 1031 of the collecting line 103 is connected to the corresponding battery 20, the second end 1032 of the collecting line 103 is provided with a connection terminal 104, a plurality of pads 105 are provided on the battery information collecting unit 101, the first end of the fuse 102 is welded to the corresponding connection terminal 104, and the second end of the fuse 102 is welded to the corresponding pad 105. Compared with the plug connection method, this welding method can ensure the reliability of the connection between the collecting line 103 and the battery information collecting unit 101. In addition, the fuse 102 not only realizes the connection between the collecting line 103 and the battery information collecting unit 101, but also fulfills the function of overcurrent protection. In this way, the number of parts can be reduced, which helps reduce the cost of the battery pack 100 and ensures the safety of the entire sampling circuit. In addition, the collection line 103 transmits the collected information of the battery 20 to the battery information collection unit 101, which processes the information and then transmits it to the battery management system 40, thereby enabling the operating status of the battery 20 to be monitored, thereby helping to improve the safety of using the battery pack 100.

[0026] The connection between the battery information collecting unit 101 and the battery management system 40 is a method commonly used in this field, and a description thereof will be omitted here.

[0027] In some embodiments, as shown in FIGS. 6 and 9, the fuse 102, the connection terminal 104 and the pad 105 are bonded and welded, and the fuse 102 is an aluminum wire, and using such a structure helps reduce production costs.

[0028] Each connection terminal 104 and each pad 105 may be connected by one fuse 102 or multiple fuses 102, and the specific number may be set according to actual usage demands.

[0029] In some embodiments, as shown in FIGS. 6 and 9, the fuse 102 is arched, which can reduce the risk of shorting due to the fuse 102 contacting other structures, thus helping to improve safety.

[0030] In some embodiments, as shown in Figures 3 and 4, the sampling structure 10 further includes an insulating layer 106 coated on the outside of the plurality of collection lines 103, the insulating layer 106 includes a first insulating layer 107 and a second insulating layer 108 provided on opposite sides of the plurality of collection lines 103, a plurality of via holes 109 are formed in the first insulating layer 107, and the exposed parts of the collection lines 103 in the corresponding via holes 109 form the connection terminals 104. The collection lines 103 are metal conductors. As shown in Figure 4, there are 12 collection lines 103 and 12 via holes 109, and the exposed parts of each collection line 103 in the corresponding via holes 109 form the connection terminals 104.

[0031] In some embodiments, the via holes 109 in the first insulating layer 107 are distributed in multiple rows, and the connection terminals 104 are also distributed in multiple rows accordingly. This arrangement allows the connection terminals 104 to be arranged more compactly, which helps to reduce the size of the sampling structure 10. As shown in FIGS. 1 to 4, the via holes 109 are distributed in multiple rows along the Z direction. The Z direction may coincide with the width direction of the battery information collecting unit 101 or the height direction of the battery pack 100.

[0032] 5 and 6, in some embodiments, the sampling structure 10 further includes a reinforcing plate 110, which is fixed to the side of the second insulating layer 108 away from the first insulating layer 107, and the projection of the connection terminal 104 onto the second insulating layer 108 is located within the range of the projection of the reinforcing plate 110 onto the second insulating layer 108. In other words, the projection of the connection terminal 104 onto the reinforcing plate 110 is located within the contour range of the reinforcing plate 110. In this way, when the connection terminal 104 and the pad 105 are welded together, the reinforcing plate 110 can function to support the connection terminal 104, which helps to improve the reliability of the welding between them.

[0033] In some embodiments, as shown in Figures 5 to 7, the battery information collecting unit 101 is provided on the side of the reinforcing plate 110 away from the second insulating layer 108, a plurality of pads 105 are provided on the side of the battery information collecting unit 101 facing the reinforcing plate 110, a plurality of first through holes 111 are formed in the sampling structure 10, the pads 105 are exposed in the corresponding first through holes 111, and the second end of the fuse 102 is drilled into the corresponding first through holes 111 and welded to the corresponding pads 105.

[0034] 5 and 6, the multiple first through-holes 111 and the multiple connection terminals 104 are arranged alternately in sequence along the width direction of the battery information collecting unit 101. By arranging them in this manner, the first through-holes 111 and the connection terminals 104 in the sampling structure 10 can be arranged more compactly, which is useful for designing a more compact sampling structure 10.

[0035] The width direction of the battery information collecting unit 101 coincides with the Z direction, which may coincide with the height direction of the battery pack 100.

[0036] In some other embodiments, as shown in Figures 8 to 10, the battery information collecting unit 101 is provided on the side of the first insulating layer 107 away from the second insulating layer 108, a plurality of pads 105 are provided on the side of the battery information collecting unit 101 away from the first insulating layer 107, a plurality of second through holes 112 are formed in the battery information collecting unit 101, the connection terminals 104 are exposed in the corresponding second through holes 112, and the first ends of the fuses 102 are drilled into the corresponding second through holes 112 and welded to the corresponding connection terminals 104.

[0037] 10, the second through-holes 112 and the pads 105 are arranged alternately in sequence along the width direction of the battery information collecting unit 101. By providing them in this manner, the second through-holes 112 and the pads 105 in the battery information collecting unit 101 can be arranged more compactly, which is helpful for designing the battery information collecting unit 101 to be more compact.

[0038] The width direction of the battery information collecting unit 101 extends along the Z direction and may coincide with the height direction of the battery pack 100.

[0039] In some embodiments of the present disclosure, as shown in Figures 5 to 10, the multiple fuses 102 and the multiple collection lines 103 form a sampling assembly 119, the sampling structure 10 includes multiple sampling assemblies 119, the battery information collection unit 101 has multiple welds 118, and multiple pads 105 are provided at the welds 118, and the pads 105 at the welds 118 are welded to the corresponding collection lines 103 via the fuses 102 of the corresponding sampling assemblies 119.

[0040] Specifically, the pad 105 at each weld 118 is welded to a first end of a fuse 102 of the corresponding sampling assembly 119, and the second end of the fuse 102 is welded to a connection terminal 104 of the collection line 103 of the sampling assembly 119.

[0041] 8 and 10, the pads 105 of the multiple sampling assemblies 119 and the multiple welding portions 118 may be arranged along the longitudinal direction of the battery information collecting portion 101, and the length of the battery information collecting portion 101 may extend along the X direction, which may coincide with the width direction of the battery pack 100. This arrangement allows the sampling structure 10 to be designed more compactly, which facilitates subsequent assembly.

[0042] In some embodiments, as shown in Figures 3 and 4, a first bent portion 113 is provided at the second end 1032 of the collecting line 103, and the connecting terminal 104 is provided at the first bent portion 113. The first insulating layer 107 and the second insulating layer 108 each include a first portion corresponding to the first bent portion 113, the via hole 109 is located in the first portion of the first insulating layer 107, and the reinforcing plate 110 is fixed to the first portion of the second insulating layer 108. Such a bent structure design can facilitate the connection between the collecting line 103 and the battery information collecting unit 101.

[0043] In some embodiments, as shown in FIGS. 5 and 6, the sampling structure 10 further includes a connection member 114 that fixedly connects the sampling structure 10 and the battery information collecting unit 101.

[0044] For example, the connecting member 114 is a rivet, and a connecting hole 115 is formed in both the sampling structure 10 and the battery information collecting unit 101, and the rivet is fixed into the connecting hole 115 to connect the sampling structure 10 and the battery information collecting unit 101. Of course, in other embodiments, the connecting member 114 may be a structural adhesive, and the sampling structure 10 and the battery information collecting unit 101 may be connected by the structural adhesive.

[0045] In some embodiments, the first insulating layer 107, the second insulating layer 108 and the plurality of collecting lines 103 form a Flexible Printed Circuit (FPC).

[0046] The FPC includes a metal foil and an insulating film covering both sides of the metal foil, where the metal foil is etched to form a plurality of collection lines 103, and the two insulating films form a first insulating layer 107 and a second insulating layer 108, respectively.

[0047] In some other embodiments, the first insulating layer 107, the second insulating layer 108 and the plurality of collecting lines 103 form a Flexible Flat Cable (FFC).

[0048] The FFC includes a plurality of metal conductors and a protective film covering both sides of the plurality of metal conductors, where the metal conductors are bonded between two protective films to form a collection line 103, and the two protective films form a first insulating layer 107 and a second insulating layer 108, respectively.

[0049] In some embodiments, a collection terminal 116 is provided at a first end 1031 of the collection line 103, and the collection line 103 is connected to a corresponding battery 20 via the corresponding collection terminal 116. As shown in Figures 3 and 6, a portion of the collection line 103 extends through the insulating layer 106 to form the collection terminal 116.

[0050] Of course, in other embodiments, a portion of the collection line 103 may be exposed to the insulating layer 106 and welded to the collection terminal 116 .

[0051] The collection line 103 is a metallic conductor and the collection terminal 116 is a metal piece.

[0052] 2 to 4, in some embodiments, a plurality of batteries 20 are arranged in sequence and connected in series along the Y direction, and each battery 20 includes a first electrode 201 and a second electrode 202 for drawing current, the first electrode 201 and the second electrode 202 are distributed on opposite sides of the battery 20, and the collecting line 103 is connected to the first electrode 201 or the second electrode 202 of the corresponding battery 20 through a corresponding collecting terminal 116. The longitudinal direction of the battery pack 100 may coincide with the Y direction.

[0053] In some other embodiments, the cells 20 are connected together via conductive sheets, and the collection lines 103 are connected to corresponding conductive sheets via corresponding collection terminals 116 .

[0054] 2 to 4, a second bent portion 117 is provided at the first end 1031 of the collecting line 103, and the collecting terminal 116 is provided at the second bent portion 117. Such a bent structure design can facilitate the connection between the collecting line 103 and the battery 20.

[0055] In another aspect, as shown in Fig. 11, the present disclosure further provides an electric vehicle 1000 including a vehicle body 200 and the battery pack 100 of any of the above embodiments. The battery pack 100 is fixed to the vehicle body 200, or a case 30 of the battery pack 100 is configured as a part of the vehicle body 200. For example, the case 30 is configured as a floor of the vehicle body 200.

[0056] In the description of this disclosure, unless otherwise clearly specified and limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense, for example, as a fixed connection, a removable connection, or an integral connection, as a mechanical connection, or an electrical connection, as a direct connection, as an indirect connection via an intermediate medium, or as an internal communication between two parts. Those skilled in the art can understand the specific meaning of the above terms in the present disclosure according to the specific situation.

[0057] In the present description, a description that refers to the term "embodiment," "specific embodiment," "example," or the like means that the specific features, structures, materials, or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present description, exemplary expressions of the above terms are not necessarily limited to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples as appropriate.

[0058] Although embodiments of the present disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and objectives of the present disclosure, and that the scope of the present disclosure is limited by the claims and their equivalents. [Explanation of symbols]

[0059] 1000 Electric Cars 100 Battery Packs 200 Body 10 Sampling Structure 101 Battery Information Collection Department 102 Fuse 103 Collection Line 1031 first end of the collection line 1032 second end of the collection line 104 Connection terminal 105 Pad 106 Insulating Layer 107 First insulating layer 108 Second insulating layer 109 Via Hole 110 Reinforcement plate 111 First through hole 112 Second through hole 113 First bend 114 Connection parts 115 Connection hole 116 Collection terminal 117 Second fold 118 Welding 119 Sampling Assembly 20 batteries 201 First electrode 202 Second electrode 30 cases 40 Battery Management System

Claims

1. A sampling structure (10) including a battery information collector (101), a plurality of fuses (102), and a plurality of collection lines (103), a first end (1031) of the collection line (103) is connected to a corresponding battery (20), and a second end (1032) of the collection line (103) is provided with a plurality of connection terminals (104), the second end (1032) of the collection line (103) having a first surface on which the plurality of connection terminals (104) are provided and a second surface opposite to the first surface; A plurality of first through holes (111) are formed in the second end (1032) of the collection line (103), each of the first through holes (111) being disposed adjacent to each of the connection terminals (104); the battery information collecting unit (101) is disposed facing the second surface of the second end (1032) of the collecting line (103); A surface of the battery information collecting unit (101) facing the second end (1032) of the collecting line (103) is provided with a plurality of pads (105) corresponding to a plurality of first through holes (111), and the pads (105) are exposed in the corresponding first through holes (111); A sampling structure (10), characterized in that first ends of the plurality of fuses (102) are welded to corresponding connection terminals (104), and second ends of the plurality of fuses (102) are welded to corresponding pads (105) via corresponding first through holes (111).

2. 2. The sampling structure (10) of claim 1, wherein the fuse (102) is bonded to the connection terminal (104) and the pad (105), and the fuse (102) is an aluminum wire.

3. The sampling structure (10) of claim 1 or 2, wherein the fuse (102) is arch-shaped.

4. The sampling structure (10) according to any one of claims 1 to 3, characterized in that the sampling structure (10) further comprises an insulating layer (106) coated on the exterior (103) of the plurality of collection lines, the insulating layer (106) comprising a first insulating layer (107) and a second insulating layer (108) provided on opposite sides of the plurality of collection lines (103), a plurality of via holes (109) are formed in the first insulating layer (107), and the portions of the collection lines (103) exposed in the corresponding via holes (109) form the connection terminals (104).

5. The sampling structure (10) further includes a reinforcing plate (110), the reinforcing plate (110) being disposed between a second end (1032) of the collection line (103) and the battery information collection unit (101), the first through hole (111) penetrating the reinforcing plate (110) to expose the pad (105) within the first through hole (111), and second ends of the multiple fuses (102) being welded to the pad (105) via the first through hole (111), the sampling structure (10) described in any one of claims 1 to 4.

6. 5. The sampling structure (10) of claim 4, further comprising a reinforcing plate (110), the reinforcing plate (110) being fixed to a side of the second insulating layer (108) away from the first insulating layer (107), and a projection of the connection terminal (104) onto the second insulating layer (108) being located within a range of a projection of the reinforcing plate (110) onto the second insulating layer (108).

7. 5. The sampling structure (10) of claim 4, wherein the first insulating layer (107), the second insulating layer (108) and the plurality of collection lines (103) form a flexible flat cable or a flexible circuit board.

8. A collection terminal (116) is provided at a first end (1031) of the collection line (103), and the collection line (103) is connected to a corresponding battery (20) via the corresponding collection terminal (116); a portion of the collection line (103) extends through the insulating layer (106) to form the collection terminal (116) or a portion of the collection line (103) is exposed through the insulating layer (106) and welded to the collection terminal (116); 5. The sampling structure (10) of claim 4, wherein the collection line (103) is a metallic conductor and the collection terminal (116) is a metal strip.

9. A sampling structure (10) including a battery information collection unit (101), a plurality of fuses (102), and a plurality of collection lines (103), A first end (1031) of the collection line (103) is connected to a corresponding battery (20), and a second end (1032) of the collection line (103) is provided with a plurality of connection terminals (104); the battery information collecting unit (101) has a first surface facing the second end (1032) of the collecting line (103) and a second surface opposite to the first surface, and a plurality of pads (105) are provided on the second surface of the battery information collecting unit (101); A plurality of second through holes (112) are formed in the battery information collecting unit (101), each of the second through holes (112) is disposed adjacent to each of the pads (105), and the connection terminals (104) are exposed in the corresponding second through holes (111); A sampling structure (10), characterized in that first ends of the plurality of fuses (102) are welded to corresponding connection terminals (104) via corresponding second through holes (112), and second ends of the plurality of fuses (102) are welded to corresponding pads (105).

10. The sampling structure (10) of any one of claims 1 to 9, characterized in that the plurality of fuses (102) and the plurality of collection lines (103) form a sampling assembly (119), the sampling structure (10) includes a plurality of the sampling assemblies (119), the battery information collection unit (101) has a plurality of welds (118), the welds (118) are provided with a plurality of the pads (105), and the pads (105) at the welds (118) are welded to corresponding collection lines (103) via corresponding fuses (102) of the sampling assemblies (119).

11. 11. The sampling structure (10) of claim 10, wherein the pads (105) at the multiple sampling assemblies (119) and multiple welds (118) are arranged along a longitudinal direction of the battery information collection portion (101).

12. A battery pack (100) including a case (30), a battery management system (40), a plurality of electrically connected batteries (20), and the sampling structure (10) according to any one of claims 1 to 11, wherein the sampling structure (10) and the plurality of batteries (20) are provided within the case (30), and the sampling structure (10) is connected to the battery management system (40) and the plurality of batteries (20).

13. An electric vehicle (1000) including a vehicle body (200) and the battery pack (100) according to claim 12, characterized in that the battery pack (100) is fixed to the vehicle body (200) or a case (30) of the battery pack (100) is configured as part of the vehicle body (200).

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