CN218632362U

CN218632362U - Sampling structure, battery module, battery package and vehicle

Info

Publication number: CN218632362U
Application number: CN202222571518.3U
Authority: CN
Inventors: 王永南; 徐海波; 冯立臣; 郑卫鑫; 张亚南
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-03-14
Anticipated expiration: 2032-09-27

Abstract

The utility model discloses a sampling structure, battery module, battery package and vehicle. The sampling structure includes a flexible circuit board having an end; the connecting piece is arranged at the end part, has elasticity and comprises a conductive layer, and insulating layers are arranged on the upper surface and the lower surface of the conductive layer; and one end of the leading-out piece is electrically connected with the connecting piece. Above-mentioned sampling structure forms under the circumstances of electricity connection between connecting piece and the extraction piece, when the extraction piece receives stress extrusion, can transmit stress for the connecting piece to can avoid stress concentration and lead to the risk of fracture and droing, be favorable to improving the reliability of structure.

Description

Sampling structure, battery module, battery package and vehicle

Technical Field

The utility model relates to a battery technology field, in particular to sampling structure, battery module, battery package and vehicle.

Background

The existing battery is generally sampled by a flexible circuit board, and the leading-out terminal pin of the flexible circuit board is generally welded on the flexible circuit board at present, so that voltage sampling is realized. In the related art, the terminals of the flexible circuit board are directly soldered to the connection pads of the cover plate. When the flexible circuit board is mounted in the battery, the stress of the terminals is particularly large due to the pressing of the cover plate, with the risk of breakage.

SUMMERY OF THE UTILITY MODEL

The utility model discloses embodiment provides a sampling structure, battery module, battery package and vehicle.

The utility model discloses embodiment's a sampling structure, include:

a flexible circuit board having an end;

the connecting piece is arranged at the end part, has elasticity and comprises a conductive layer, and insulating layers are arranged on the upper surface and the lower surface of the conductive layer; and

and one end of the leading-out piece is electrically connected with the connecting piece.

Above-mentioned sampling structure forms under the circumstances of electricity connection between connecting piece and the extraction piece, when the extraction piece receives stress extrusion, can transmit stress for the connecting piece to can avoid stress concentration and lead to the risk of fracture and droing, be favorable to improving the reliability of structure.

In some embodiments, the sampling structure comprises:

and the connector is arranged at the end part and is electrically connected with the connecting piece.

In some embodiments, the connector is a bent or bent structure.

In certain embodiments, the exit piece comprises a positioning hole for positioning the sampling structure.

The utility model discloses embodiment's a battery module, include:

at least one cell having a pole piece; and

the sampling structure of any one of the above embodiments, wherein the pole piece is electrically connected to the extraction member.

Above-mentioned battery module forms under the condition of electricity connection between connecting piece and the extraction piece, when the extraction piece receives stress extrusion, can transmit stress for the connecting piece to can avoid stress concentration and lead to the risk of fracture and droing, be favorable to improving the reliability of structure.

In some embodiments, the battery module includes:

the connecting piece is electrically connected with the leading-out piece, and the pole piece is electrically connected with the leading-out piece through the connecting piece.

In some embodiments, the sampling structure is disposed on one side of the battery cell, and the flexible circuit board is disposed on the battery cell and aligned with an extending direction of the battery cell.

In some embodiments, the battery module includes two battery cells connected end to end in the length direction, the flexible circuit board has two end portions, the two end portions are respectively located at two ends of the flexible circuit board along the length direction of the flexible circuit board, one of the battery cells is electrically connected to the lead-out member at one end portion, and the other battery cell is electrically connected to the lead-out member at the other end portion.

The utility model discloses embodiment's a battery package, include:

the battery module according to any one of the above embodiments, wherein the number of the battery modules is at least one; and

a frame in which the battery module is housed.

Above-mentioned battery package forms under the circumstances of electricity connection between connecting piece and the extraction piece, when the extraction piece receives stress extrusion, can transmit stress for the connecting piece to can avoid stress concentration and lead to the risk of fracture and droing, be favorable to improving the reliability of structure.

The utility model discloses a vehicle of embodiment, include:

the battery pack according to the above embodiment.

Above-mentioned vehicle forms the circumstances of electricity connection between connecting piece and the extraction piece, and when the extraction piece received stress extrusion, can transmit stress for the connecting piece to can avoid stress concentration and lead to the risk of fracture and droing, be favorable to improving the reliability of structure.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a sampling structure according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 2;

fig. 4 is another schematic structural diagram of the sampling structure according to the embodiment of the present invention;

FIG. 5 is an enlarged view of portion C of FIG. 4;

fig. 6 is another schematic structural diagram of a sampling structure according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a battery module according to an embodiment of the present invention;

FIG. 8 is an enlarged view of portion D of FIG. 7;

fig. 9 is an enlarged view of portion E of fig. 7;

fig. 10 is another schematic structural view of the battery module according to the embodiment of the present invention.

Description of the reference numerals:

100. a sampling structure; 110. a flexible circuit board; 112. an end portion; 1122. a first end; 1124. a second end; 114. a connecting member; 116. a lead-out member; 1162. a first lead-out member; 1164. a second lead-out member; 118. an insulating layer; 1182. a first insulating layer; 1184. a second insulating layer; 120. a connector assembly; 122. a reinforcing plate; 124. a pad; 126. positioning holes;

200. a battery module; 210. an electric core; 212. pole pieces; 214. connecting sheets; 2142. a front end connecting sheet; 2146. a rear end connecting sheet; 216. a housing; 218. a first cover plate; 220. a second cover plate;

300. provided is a battery pack.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention.

In embodiments of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Embodiments of the present invention may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 and 2, a sampling structure 100 according to an embodiment of the present invention includes a flexible circuit board 110, a connecting member 114, and a leading-out member 116. The flexible circuit board 110 has an end 112. The connecting member 114 is disposed at the end portion 112, and the connecting member 114 has elasticity and includes a conductive layer having an insulating layer 118 disposed on the upper and lower surfaces thereof. One end of the lead-out member 116 is electrically connected to the connection member 114.

In the above sampling structure 100, when the connection member 114 and the lead member 116 are electrically connected, when the lead member 116 is pressed by stress, the stress is transferred to the connection member 114, so that the risk of fracture and falling caused by stress concentration can be avoided, and the reliability of the structure can be improved.

Specifically, the flexible circuit board 110 may have two ends 112, and the two ends 112 may include a first end 1122 and a second end 1124. The two connecting members 114 are symmetrically disposed at the first end 1122, and the connecting members 114 may have elasticity. The sampling structure 100 is provided with an insulating layer 118, the insulating layer 118 may include a first insulating layer 1182 and a second insulating layer 1184, the first insulating layer 1182 is disposed on an outer surface of the connecting member 114, the outer surface of the connecting member 114 is far from the second end 1124, the second insulating layer 1184 is disposed on an inner surface of the connecting member 114, and the inner surface of the connecting member 114 is close to the second end 1124, so as to protect the connecting member 114 and avoid the risk of electric leakage. The flexible circuit board 110 is provided with a conductive layer (not shown), the upper surface of the conductive layer may be covered with a first insulating layer 1182, the lower surface of the conductive layer may be covered with a second insulating layer 1184, and the conductive layer is located between the first insulating layer 1182 and the second insulating layer 1184. The leading-out piece 116 may include a first leading-out piece 1162 and a second leading-out piece 1164, the two first leading-out pieces 1162 are correspondingly connected to the two connecting pieces 114, the first leading-out piece 1162 may be electrically connected to the connecting pieces 114, and when the first leading-out piece 1162 is pressed by stress, the stress may be transmitted to the connecting pieces 114, so that a risk of fracture and falling due to stress concentration may be avoided, and the reliability of the structure may be improved. Alternatively, the first lead-out 1162 may be a nickel plate, one end of which is connected to the connecting member 114 by soldering, and the other end of which is directly connected to the conductive member by laser welding to perform sampling. The insulating layer 118 may be a PET or PI film. The conductive layer may be a copper foil layer, an aluminum foil layer, or the like, or may be other suitable metal conductive materials, which is not limited herein. T may be expressed as an up-down direction of the flexible circuit board 110.

In some embodiments, referring to fig. 4 and 5, the sampling structure 100 includes a connector 120, the connector 120 being disposed at the end 112 and electrically connected to the connector 114. Therefore, a voltage signal can be led out through the connector 120, so as to play a role in monitoring the battery cell 210.

Specifically, the sampling structure 100 is provided with a connector 120, the connector 120 being located at a first end 1122. The sampling structure 100 is further provided with a reinforcing plate 122, the reinforcing plate 122 can be used as a welding base of the connector 120, the connecting piece 114 is a flexible structure of soft connection led out from the reinforcing plate 122, the reinforcing plate 122 can be electrically connected with the connecting piece 114, the connector 120 is welded on the reinforcing plate 122 and can further be electrically connected with the connecting piece 114, a voltage signal can be led out through the connector 120, and therefore the monitoring effect on the battery cell 210 is achieved. In addition, the reinforcing plate 122 is further provided with a pad 124 led out from the conductive layer, and the pad 124 can be soldered to the connector 120 to lead out the sampling signal.

In some embodiments, the connecting member 114 has a curved or bent configuration. Therefore, the structure layout has a better force bearing effect.

Specifically, in the embodiment shown in fig. 2, the connecting element 114 may have a trapezoidal curved or bent structure, one end of the connecting element 114 close to the reinforcing plate 122 is connected to the reinforcing plate 122, and one end of the connecting element away from the reinforcing plate 122 is welded to the first leading-out element 1162, so that the structural layout has a better force-bearing effect.

In certain embodiments, the exit piece 116 includes a positioning aperture 126, and the positioning aperture 126 is used to position the sampling structure 100. Thus, the sampling structure 100 can be limited and fixed on the battery module 200.

Specifically, referring to fig. 2, a positioning hole 126 is formed at one end of the first leading-out member 1162 close to the connecting member 114, and the positioning hole 126 can be used for positioning the sampling structure 100, so that the sampling structure 100 can be limited and fixed on the battery module 200. It should be noted that the positioning hole 126 can also position the first lead-out piece 1162, thereby facilitating welding. In other embodiments, the positioning hole 126 may also be opened on the flexible circuit board 110.

Referring to fig. 7, 8 and 9, a battery module 200 according to an embodiment of the present invention includes at least one battery cell 210 and the sampling structure 100 according to any one of the above embodiments. The cell 210 has a pole piece 212. The pole piece 212 makes electrical connection with the lead-out 116.

In the above battery module 200, when the connection member 114 and the lead member 116 are electrically connected to each other, the lead member 116 is stressed and extruded, and the stress is transmitted to the connection member 114, so that the risk of fracture and falling due to stress concentration can be avoided, and the reliability of the structure can be improved.

Specifically, the battery module 200 may include, but is not limited to, a blade battery module 200, and the battery module 200 is provided with a battery cell 210 and a sampling structure 100. In the embodiment shown in fig. 7 and 9, two battery cells 210 are provided, each battery cell 210 has a pole piece 212, each battery cell 210 is further provided with an electrode (not shown), the pole pieces 212 can be electrically connected with the electrodes of the battery cells 210, and the pole pieces 212 can also be electrically connected with the second lead-out piece 1164. It is understood that, in other embodiments, the number of the battery cells 210 may also be one, three, or another number, and may be set according to specific situations, which is not specifically limited herein.

In some embodiments, the battery module 200 includes a tab 214, the tab 214 is electrically connected to the lead 116, and the pole piece 212 is electrically connected to the lead 116 through the tab 214. In this manner, the sampling structure 100 may be connected on.

Specifically, referring to fig. 8 and 9, the connecting piece 214 includes a front connecting piece 2142 and a rear connecting piece 2146. A front connection pad 2142 is disposed adjacent to the first end 1122, and the front connection pad 2142 is soldered to the first lead-out piece 1162 to form an electrical connection. The rear connection piece 2146 is disposed at a position close to the second end 1124, the rear connection piece 2146 can be electrically connected to the pole piece 212, the rear connection piece 2146 is welded to the pole piece 212 and led out to the second lead-out piece 1164, the rear connection piece 2146 is welded to the second lead-out piece 1164 and electrically connected to the second lead-out piece 1164, and the pole piece 212 can be electrically connected to the second lead-out piece 1164 through the rear connection piece 2146, so that the sampling structure 100 can be connected and conducted.

In some embodiments, the sampling structure 100 is disposed on one side of the battery cell 210, and the flexible circuit board 110 is disposed on the battery cell 210, and corresponds to the extending direction of the battery cell 210. Thus, the battery module 200 can be made compact and can be made compact.

Specifically, in the embodiment shown in fig. 7, K may be represented as a length direction of the battery cell 210, and may also be represented as an extending direction of the battery cell 210. Sampling structure 100 sets up the upside at electric core 210, and flexible circuit board 110 can set up in electric core 210 top, and flexible circuit board 110's extending direction is unanimous basically with the K direction to can make battery module 200's compact structure, the miniaturization of being convenient for.

In some embodiments, the battery module 200 includes two battery cells 210 connected end to end in the length direction, the flexible circuit board 110 has two end portions 112, the two end portions 112 are respectively located at two ends of the flexible circuit board 110 along the length direction of the flexible circuit board 110, one of the battery cells 210 is electrically connected to the lead-out member 116 on one of the end portions 112, and the other battery cell 210 is electrically connected to the lead-out member 116 on the other end portion 112. In this way, the voltages of the two battery cells 210 may be monitored.

Specifically, in the embodiment shown in fig. 10, the battery module 200 further includes a case 216, a first cover plate 218, and a second cover plate 220. The two cells 210 and the sampling structure 100 are disposed in the housing 216, the two cells 210 may be connected end to end in the K direction, the housing 216 may be an aluminum structure, the first cover 218 is disposed near the first end 1122, the second cover 220 is disposed near the second end 1124, and the housing 216 is closed by the first cover 218 and the second cover 220, so that the sampling structure 100 and the cells 210 in the housing 216 may be protected from damage.

The flexible circuit board 110 is provided with a first end 1122 and a second end 1124, and the first end 1122 and the second end 1124 may be respectively located at two ends of the flexible circuit board 110 along the K direction. The cell 210 near the first end 1122 may be electrically connected to the first lead-out piece 1162, and the cell 210 near the second end 1124 may be electrically connected to the second lead-out piece 1164, so that the voltages of the two cells 210 may be monitored.

Referring to fig. 10, a battery pack 300 according to an embodiment of the present invention includes at least one battery module 200 according to any one of the above embodiments and a frame (not shown). The battery module 200 is housed in the housing.

In the battery pack 300, when the connection member 114 and the lead member 116 are electrically connected to each other, stress is transmitted to the connection member 114 when the lead member 116 is pressed by the stress, so that the risk of breakage and falling due to stress concentration can be avoided, and the reliability of the structure can be improved.

Specifically, the battery pack 300 is provided with the battery modules 200 and a frame body in which the battery modules 200 can be housed, the number of the battery modules 200 being at least one. It is understood that the number of the battery modules 200 may be two, three or other numbers, which can be adjusted according to specific situations and is not limited in detail.

The utility model discloses a vehicle of embodiment includes above-mentioned embodiment's battery package 300.

In the vehicle, when the connection member 114 and the lead-out member 116 are electrically connected, stress is transmitted to the connection member 114 when the lead-out member 116 is pressed by the stress, so that the risk of fracture and falling due to stress concentration can be avoided, and the reliability of the structure can be improved.

Specifically, the vehicle includes, but is not limited to, a pure electric vehicle, a hybrid vehicle, an extended range electric vehicle, and the like. The vehicle is further provided with a body (not shown) on which the battery pack 300 is mounted. The battery pack 300 is provided with the battery module 200, the battery module 200 is provided with the battery core 210 and the sampling structure 100, under the condition that the connecting piece 114 and the first leading-out piece 1162 are electrically connected, when the first leading-out piece 1162 is subjected to stress extrusion, stress can be transmitted to the connecting piece 114, so that the risk of breakage and falling caused by stress concentration can be avoided, and the reliability of the structure is improved.

In the description of the present specification, reference to the description of "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A sampling structure, comprising:

a flexible circuit board having an end;

2. The sampling structure of claim 1, wherein the sampling structure comprises:

3. The sampling structure of claim 1, wherein the connector is a curved or bent structure.

4. The sampling structure of claim 1, wherein the extraction member comprises a positioning aperture for positioning the sampling structure.

5. A battery module, comprising:

at least one cell having a pole piece; and

the sampling structure of any one of claims 1-4, the pole piece being in electrical connection with the extraction member.

6. The battery module according to claim 5, wherein the battery module comprises:

7. The battery module of claim 5, wherein the sampling structure is disposed on one side of the battery core, and the flexible circuit board is disposed on the battery core and aligned with an extending direction of the battery core.

8. The battery module of claim 5, wherein the battery module comprises two battery cells connected end to end in the length direction, the flexible circuit board has two end portions, the two end portions are respectively located at two ends of the flexible circuit board in the length direction of the flexible circuit board, one of the battery cells is electrically connected to the lead-out member at one end portion, and the other battery cell is electrically connected to the lead-out member at the other end portion.

9. A battery pack, comprising:

the battery module according to any one of claims 5 to 8, wherein the number of the battery modules is at least one; and

the battery module is accommodated in the frame body.

10. A vehicle, characterized by comprising:

the battery pack according to claim 9.