CN215989110U - Wiring harness board assembly of battery pack and battery pack - Google Patents
Wiring harness board assembly of battery pack and battery pack Download PDFInfo
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- CN215989110U CN215989110U CN202121811583.8U CN202121811583U CN215989110U CN 215989110 U CN215989110 U CN 215989110U CN 202121811583 U CN202121811583 U CN 202121811583U CN 215989110 U CN215989110 U CN 215989110U
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- board
- wire harness
- battery pack
- blocking plate
- flexible
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a wire harness board assembly of a battery pack and the battery pack. And, because be provided with the portion of holding in the pencil board, and this portion of holding corresponds the setting with the kink, the portion of holding can hold the kink simultaneously, passes through the pencil board because of the portion of holding again for the portion of holding can provide more space and be used for holding the kink, simultaneously, can also avoid taking the space that increases on the group battery direction of height to be favorable to reducing the volume of group battery.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a wire harness board assembly of a battery pack and the battery pack.
Background
The wire harness board assembly of the battery pack may generally include: the wiring harness board can support the flexible circuit board; moreover, the battery pack can further comprise a plurality of batteries, the batteries can be thermally expanded due to overheating in the using process, the flexible circuit board can be pulled due to the thermal expansion, and if the pulling force is too large, the flexible circuit board can be damaged, so that the battery pack cannot be normally used.
Therefore, how to avoid damaging the flexible circuit board when thermal expansion occurs and improve the reliability of the battery pack is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a wiring harness board assembly of a battery pack and the battery pack, which are used for avoiding damaging a flexible circuit board when thermal expansion occurs and improving the reliability of the battery pack.
In a first aspect, an embodiment of the present invention provides a wire harness board assembly of a battery pack, including: a flexible wiring board, and a wiring harness board for supporting the flexible wiring board;
the flexible circuit board is provided with a bending part;
the harness plate has an accommodating portion that penetrates the harness plate in a direction parallel to a first direction; the first direction is the arrangement direction of the flexible circuit board and the wiring harness board;
the bending part is arranged corresponding to the accommodating part, and the accommodating part is used for accommodating the bending part.
In a second aspect, an embodiment of the present invention provides a battery pack, including: the wiring harness board assembly provided by the embodiment of the utility model.
The technical scheme can realize the following technical effects:
according to the wiring harness board assembly of the battery pack and the battery pack provided by the embodiment of the utility model, the flexible circuit board is provided with the bending part, so that when the battery pack is subjected to thermal expansion, the bending part can provide more extension space, the flexible circuit board can tolerate larger expansion without being damaged, and the reliability of the flexible circuit board is improved while the reliability of the battery pack is improved.
And, because be provided with the portion of holding in the pencil board, and this portion of holding corresponds the setting with the kink, the portion of holding can hold the kink simultaneously, passes through the pencil board because of the portion of holding again for the portion of holding can provide more space and be used for holding the kink, simultaneously, can also avoid taking the space that increases on the group battery direction of height to be favorable to reducing the volume of group battery.
Drawings
Fig. 1 is a schematic view of a wiring harness board assembly provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a flexible circuit board provided in an embodiment of the present invention;
fig. 3 is a schematic structural view of a combination of a wiring harness board and a bus bar according to an embodiment of the present invention;
fig. 4 is a schematic view of a flexible wiring board and a harness board provided in an embodiment of the present invention;
FIG. 5 is a plan view taken along line M1 in FIG. 1;
FIG. 6 is another plan view taken in the direction M1 in FIG. 1;
fig. 7 is a schematic cross-sectional view of a receiving portion provided in an embodiment of the present invention;
fig. 8 is a schematic sectional view of another accommodating part provided in the embodiment of the present invention;
FIG. 9 is a schematic perspective view of a partial bundle plate assembly according to an embodiment of the present invention;
FIG. 10 is a plan view taken parallel to the M1 and M2 directions in FIG. 9;
fig. 11 is a schematic view of another wiring harness panel assembly provided in an embodiment of the present invention;
FIG. 12 is a plan view taken in the direction M1 in FIG. 11;
FIG. 13 is another plan view taken in the direction M1 in FIG. 11;
fig. 14 is a schematic structural diagram of a battery pack provided in an embodiment of the present invention.
The device comprises a flexible circuit board 10, a flexible circuit board 11, a bent part 12, a tear-proof opening 13, a signal acquisition end, a wiring harness board 20, a containing part 21, a holding part 22a, a holding part 22b, a holding part 30, a bus bar 40, a sensor a1, a2, a bottom part G1, a first section G2, a second section G3 and a third section G3.
Detailed Description
The following description will be made in detail with reference to the accompanying drawings, in which a wire harness plate assembly of a battery pack and a specific embodiment of the battery pack provided by an embodiment of the present invention are described. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a wire harness board assembly of a battery pack, as shown in fig. 1, which may include: a flexible wiring board 10, and a wiring harness board 20 for supporting the flexible wiring board 10;
the flexible circuit board 10 has a bending part 11;
the harness plate 20 has an accommodating portion 21, and the accommodating portion 21 penetrates the harness plate 20 in a direction parallel to a first direction (a direction shown as M1 in fig. 1); wherein the first direction is an arrangement direction of the flexible circuit board 10 and the wiring harness board 20;
the bending portion 11 is disposed corresponding to the accommodating portion 21, and the accommodating portion 21 is used for accommodating the bending portion 11.
Specific structural schematic diagrams can be shown in fig. 2 and fig. 3, wherein fig. 2 is a structural schematic diagram of a flexible circuit board, and fig. 3 is a structural schematic diagram of a combination of a wiring harness board and a bus bar; as can be seen from the figure: the bent portion 11 in fig. 2 is provided corresponding to the accommodating portion 21 in fig. 3, so that the accommodating portion 21 can accommodate the bent portion 11.
Because the flexible circuit board has the bending part, when the battery pack has thermal expansion, the bending part can provide more extension spaces, so that the flexible circuit board can bear larger expansion without damage, and the reliability of the battery pack is improved while the reliability of the flexible circuit board is improved.
And, because be provided with the portion of holding in the pencil board, and this portion of holding corresponds the setting with the kink, the portion of holding can hold the kink simultaneously, passes through the pencil board because of the portion of holding again for the portion of holding can provide more space and be used for holding the kink, simultaneously, can also avoid taking the space that increases on the group battery direction of height to be favorable to reducing the volume of group battery.
Optionally, in the embodiment of the present invention, the structure of the flexible printed circuit is not limited to that shown in fig. 2, and may also be as shown in fig. 4, that is, the flexible printed circuit has two branches, and each branch is provided with a bending portion 11, that is, the flexible printed circuit shown in fig. 4 has 4 bending portions; correspondingly, the structure of the wiring harness board is arranged corresponding to the structure of the flexible circuit board, that is, the wiring harness board is also provided with four accommodating parts, wherein the accommodating part marked as 21 corresponds to the bent part marked as 11, the accommodating part marked as f1 corresponds to the bent part marked as f1 ', the accommodating part marked as f2 corresponds to the bent part marked as f2 ', and the accommodating part marked as f3 corresponds to the bent part marked as f3 ', so that the wiring harness board can effectively support the flexible circuit board.
That is to say, in the embodiment of the present invention, in order to enable the harness board to have a better supporting function on the flexible circuit board, the structure of the flexible circuit board is related to the structure of the harness board, and is corresponding to the structure of the harness board.
Alternatively, in the embodiment of the present invention, the accommodating portion 21 may be, but is not limited to: a through hole (as shown in fig. 5) or a notch (as shown in fig. 6), but the accommodating portion may be any form as long as it can accommodate the bent portion.
Alternatively, in the embodiment of the present invention, as shown in fig. 7 and 8, a region filled with sparse black dots in the drawing represents the accommodating part 21, a side of the accommodating part 21 facing the flexible wiring board is a top part (as shown by a 1), a side of the accommodating part 21 facing away from the flexible wiring board is a bottom part (as shown by a 2), and an area of the top part a1 is larger than an area of the bottom part a2 in a direction parallel to the surface of the harness board 20 (a direction shown by M2 in the drawing).
Among them, in fig. 7 and 8, if the shapes of the top and bottom are the same, since the length of the top a1 in the section shown in the drawing is longer than that of the bottom a2 in the section shown in the drawing, it can further mean that the area of the top a1 is larger than that of the bottom a 2.
So, carry out special setting to the portion of holding, can play certain supporting role to the kink when holding the kink, avoid causing great pulling force to the contact place (shown as in the dotted line circle in fig. 7 and fig. 8) at kink and portion of holding edge, can also be favorable to reducing the thickness of pencil board subassembly simultaneously to be favorable to reducing the thickness of group battery.
Optionally, the area of the top and the area of the bottom of the accommodating part may also be set to be the same, as shown in fig. 1, so as to reduce the difficulty of manufacturing the accommodating part.
Alternatively, in the embodiment of the present invention, as shown in fig. 9, the bending portion is bent in a direction along the length direction of the flexible wiring board (a direction shown as M2 in the figure);
as shown in fig. 10, the accommodating portion has a first section G1 parallel to a reference plane, the wiring harness board has a second section G2 parallel to the reference plane, and a side edge a3 of the first section G1 is connected to a side edge a4 of the second section G2 on the side close to the flexible wiring board through an arc (as shown by a5 inside a dashed circle in fig. 9 and 10); wherein the reference plane is: a plane parallel to the first direction (the direction shown as M1 in the figure) and parallel to the length direction (the direction shown as M2 in the figure);
as shown in fig. 7, 8 and 10, the receiving portion has a third cross section G3 parallel to the first direction and perpendicular to the length direction, and the side a3 of the first cross section G1 and the third cross section G3 are both straight lines or arcs extending from top to bottom.
For example, as shown in fig. 7 and 10, the side of the section of the accommodating portion 21 may be a straight line extending from top to bottom; alternatively, as shown in fig. 8, the side of the cross section of the accommodating portion 21 may be an arc extending from top to bottom.
Among them, fig. 7 and 8 can be regarded as a section of the accommodating section along the width direction of the flexible wiring board, that is, a third section G3, and it is not necessary to provide connection through an arc between a side edge of the third section and a side edge of a section of the wiring harness board in the width direction of the flexible wiring board (such as G4 shown in fig. 7 and 8) on a side close to the flexible wiring board, because:
the bending part is accommodated in the accommodating part along the length direction (such as the M2 direction), the side edge of the first section is connected with the side edge of the second section close to the flexible circuit board through an arc, so that the bending part can be conveniently placed and supported, and the bending part does not need to be supported along the width direction of the flexible circuit board, so that the special design of arc connection is not needed, and the manufacturing difficulty is favorably reduced.
The cross-sectional shape of the housing portion 21 is not limited to that shown in fig. 7, 8, and 10, and is described here only with the configuration shown in fig. 7, 8, and 10.
Of course, in the implementation, the specific arrangement of the accommodating portion may be determined according to actual conditions, and is not limited herein.
Optionally, in an embodiment of the present invention, a blocking plate is disposed in an area where the accommodating portion is located, the blocking plate is used for supporting the bending portion, and the blocking plate covers only a partial area of the accommodating portion.
For example, as shown in fig. 12 and 13, the blocking plate 22 covers only a partial area of the accommodating portion 21; meanwhile, as shown in fig. 4, the blocking plate 22 may cover only a partial area of the receiving portion 21.
The reason for this is that:
when the battery pack comprises a plurality of batteries, if the batteries expand, the expansion deformation of different batteries may be different, so that the bent part may be stretched or pressed; when the bent portion is pressed, the bent portion 11 may be broken in the case of lack of support for the bent portion;
if the blocking plate is arranged, the bent part can be supported and protected, the bent part is prevented from being damaged, and the reliability of the flexible circuit board is improved; meanwhile, the bent part can be prevented from contacting with the battery below the wire harness plate, so that short circuit is avoided, and the reliability of the battery pack is improved.
In addition, during the operation of the battery, when the temperature of the battery is higher, condensed water may appear on the wire harness plate, and the condensed water is easy to form accumulation on the blocking plate, so that the bent part is adsorbed on the blocking plate; if the blocking plate only covers partial area of the accommodating part, the accumulation amount of condensed water on the blocking plate can be reduced, and then the adsorption force between the bent part and the blocking plate is reduced, so that when the battery expands due to high temperature, the bent part can be easily stretched, and the reliability of the wire harness plate assembly is improved.
Optionally, in the embodiment of the present invention, as shown in fig. 11, the blocking plate 22 is located on a surface of the harness plate 20 on a side away from the flexible circuit board 10, and the blocking plate 22 is disposed outside the accommodating portion 21.
So, can avoid blockking the board and occupy the space of holding portion for holding portion can hold more kink, and then when making the flexible line way board have more tensile space, can also prevent to occupy the space in the group battery direction of height, thereby is favorable to reducing the volume of group battery.
Alternatively, in the embodiment of the present invention, as shown in fig. 12 and 13, the bent portion 11 is bent in a direction along the length direction of the flexible wiring board 10 (a direction shown as M2 in the figure);
the blocking plate 22 is disposed along the length direction (the direction shown as M2 in the drawing).
Thus, the bending part can be supported well, and the bending part can be prevented from being folded in the width direction, and further the bending part can be prevented from being damaged due to stress concentration at the folding part, so that the reliability of the bending part can be improved.
Alternatively, in the embodiment of the present invention, as shown in fig. 4, 12 and 13, the blocking plate 22 is provided in plurality.
Two blocking plates 22 are shown in fig. 4 and 13, and three blocking plates 22 are shown in fig. 12, but in a specific implementation, the number of the blocking plates 22 may be four or five, and the blocking plates 22 may be arranged according to the width of the blocking plates 22 (i.e., the length in the direction of M3 in fig. 12), the size of the accommodating portion 21, and actual needs, and is not limited herein.
And, specifically, for the accommodating part, if two edges parallel to the length direction of the flexible circuit board are defined as reference edges and the blocking plate is provided in plurality, for the arrangement of the plurality of blocking plates, the following several ways may be included:
mode 1:
alternatively, as shown in FIG. 13, there is one blocking plate (e.g., 22a) that overlaps one of the reference edges in the orthographic projection of the beam plate and no blocking plate that overlaps the other reference edge in the orthographic projection of the beam plate, e.g., 22 b.
Mode 2:
optionally, there is an overlap of the orthographic projection of one blocking plate on the beam plate with one of the reference edges and an overlap of the orthographic projection of the other blocking plate on the beam plate with the other reference edge, as shown in FIG. 12.
Therefore, when the blocking plate is provided with a plurality of blocking plates, the bending parts can be uniformly supported, the phenomenon that the stress is not uniform due to the fact that one side is not supported is avoided, and further the bending parts are prevented from being damaged, and therefore the reliability of the bending parts is improved.
Of course, in specific implementation, the arrangement of the positions of the plurality of blocking plates is not limited to the above two modes, and may be in other modes, and the arrangement may be performed according to actual needs, and is not limited herein.
Optionally, in an embodiment of the present invention, the blocking plate and the harness plate are of an integral structure.
That is to say, when the wiring harness board is manufactured specifically, the barrier board can be manufactured at the same time, so that the increase of the manufacturing process is avoided, the manufacturing process is simplified, and the manufacturing cost can be reduced.
Optionally, in the embodiment of the present invention, as shown in fig. 2 and fig. 3, the flexible circuit board 10 has a tear-preventing slit 12, and the tear-preventing slit 12 does not overlap with an orthographic projection of the bent portion 11 to the harness board;
the flexible printed circuit board 10 is provided with a signal acquisition end 13 connected with the sensor 40, the tear-preventing slits 12 are provided with a plurality of pieces, the signal acquisition end 13 is arranged between any two of the tear-preventing slits 12, and the tear-preventing slits 12 are arranged on the same side of the flexible printed circuit board 10.
The signal acquisition end may be a protrusion (not shown) protruding perpendicular to the extending direction of the flexible circuit board, or as shown in fig. 2, the signal acquisition end is an area in which the signal acquisition end can be connected to the sensor 40; in practical situations, the specific form of the signal acquisition end can be set according to practical needs, and is not limited herein.
So, tear-proof mouth with the kink to the orthographic projection of pencil board is not overlapped, can avoid the kink stress concentration point to appear, and then avoids the kink to appear the rupture when frequently being dragged or extrudeing to improve the reliability of kink.
And, set up the signal acquisition end in arbitrary two between the tear-proof piece, can protect the signal acquisition end through tear-proof piece, avoid the signal acquisition end to appear shifting when the flexible line way board appears dragging, and then avoid the signal acquisition end can't accurately gather the signal effectively to improve the reliability of pencil board subassembly.
Specifically, as shown in fig. 3, the sensor 40 connected to the signal acquisition terminal 13 may be a temperature sensor or a voltage sensor, so as to detect the temperature and the voltage of the battery pack, and thus to monitor the performance of the battery pack.
Based on the same utility model concept, an embodiment of the present invention provides a battery pack, as shown in fig. 14, which may include: the wiring harness board assembly provided by the embodiment of the utility model.
Alternatively, in the embodiment of the present invention, the battery pack may include batteries, bus bars, and other structures for implementing the functions of the battery pack (as shown in fig. 14, which only shows the wiring harness board assembly and the bus bars), in addition to the wiring harness board assembly, and will not be described in detail herein.
In the embodiment of the utility model, the battery pack can be a battery module or a battery pack; the battery module can comprise a plurality of batteries, end plates and side plates, and the end plates and the side plates can be used for fixing the plurality of batteries; the battery pack may include a plurality of batteries and a battery case, and the battery case may be used to fix the plurality of batteries.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A wire harness board assembly of a battery pack, comprising: a flexible wiring board, and a wiring harness board for supporting the flexible wiring board;
the flexible circuit board is provided with a bending part;
the harness plate has an accommodating portion that penetrates the harness plate in a direction parallel to a first direction; the first direction is the arrangement direction of the flexible circuit board and the wiring harness board;
the bending part is arranged corresponding to the accommodating part, and the accommodating part is used for accommodating the bending part.
2. The wire harness board assembly according to claim 1, wherein a side of the receiving portion facing the flexible wiring board is a top portion, a side of the receiving portion facing away from the flexible wiring board is a bottom portion, and an area of the top portion is larger than an area of the bottom portion in a direction parallel to a surface of the wire harness board.
3. The wire harness board assembly according to claim 1 or 2, wherein the bent portion is bent in a direction along a length of the flexible wiring board;
the accommodating part is provided with a first cross section parallel to a reference plane, the wiring harness board is provided with a second cross section parallel to the reference plane, and the side edge of the first cross section is connected with the side edge of the second cross section close to the flexible circuit board through an arc; wherein the reference plane is: a plane parallel to the first direction and parallel to the length direction;
the accommodating part is provided with a third section parallel to the first direction and perpendicular to the length direction, and the side edges of the first section and the third section are straight lines or arc lines extending from top to bottom.
4. The wire harness board assembly according to claim 1, wherein a blocking plate is provided at a region where the receiving part is located, the blocking plate supporting the bent part, and the blocking plate covering only a partial region of the receiving part.
5. The wire harness board assembly according to claim 4, wherein the blocking plate is located on a surface of the wire harness board on a side away from the flexible wiring board, and the blocking plate is disposed outside the accommodating portion.
6. The wire harness board assembly according to claim 4, wherein the bent portion is bent in a direction along a length of the flexible wiring board;
the blocking plate is disposed along the length direction.
7. The wire harness board assembly according to claim 4, wherein the blocking plate is provided in plurality.
8. The wire harness plate assembly of claim 4, wherein the blocking plate is a unitary structure with the wire harness plate.
9. The wire harness board assembly according to claim 1, wherein the flexible circuit board has a tear preventing slit that does not overlap with an orthographic projection of the bent portion to the wire harness board;
the flexible line way board has the signal acquisition end of being connected with the sensor, the anti-tear seam is provided with a plurality ofly, the signal acquisition end sets up in arbitrary two between the anti-tear seam, and this arbitrary two the anti-tear seam sets up same one side of flexible line way board.
10. A battery pack, comprising: the wire harness panel assembly of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121811583.8U CN215989110U (en) | 2021-08-04 | 2021-08-04 | Wiring harness board assembly of battery pack and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121811583.8U CN215989110U (en) | 2021-08-04 | 2021-08-04 | Wiring harness board assembly of battery pack and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215989110U true CN215989110U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121811583.8U Active CN215989110U (en) | 2021-08-04 | 2021-08-04 | Wiring harness board assembly of battery pack and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215989110U (en) |
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2021
- 2021-08-04 CN CN202121811583.8U patent/CN215989110U/en active Active
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| GR01 | Patent grant | ||
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Address after: 610100 No. 1, floor 5, building 56, No. 888, second section of Chenglong Avenue, Damian street, Chengdu Economic and Technological Development Zone (Longquanyi District), Chengdu, Sichuan Patentee after: Zhongchuangxin Aviation Technology (Chengdu) Co.,Ltd. Address before: 610100 No. 1, floor 5, building 56, No. 888, second section of Chenglong Avenue, Damian street, Chengdu Economic and Technological Development Zone (Longquanyi District), Chengdu, Sichuan Patentee before: Kaibo energy technology (Chengdu) Co.,Ltd. |