CN220895780U

CN220895780U - Gather integrated component and battery package

Info

Publication number: CN220895780U
Application number: CN202322230460.0U
Authority: CN
Inventors: 滕效富
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2024-05-03
Anticipated expiration: 2033-08-17

Abstract

The application provides an acquisition integrated component and a battery pack; the collecting and integrating assembly comprises a wire harness isolation plate, and a busbar, a flexible circuit board, a first heat insulation strip and a second heat insulation strip which are arranged on the wire harness isolation plate, wherein the busbar comprises busbar groups, the busbar groups comprise busbar units, the flexible circuit board comprises transmission strips arranged between adjacent busbar units, the first heat insulation strip and the second heat insulation strip are arranged between adjacent busbar groups, the first heat insulation strip covers the transmission strips between the adjacent busbar groups, the second heat insulation strip is arranged on one side, close to a battery cell, of the wire harness isolation plate, and the second heat insulation strip and the first heat insulation strip are provided with overlapping parts; according to the application, the first heat insulation strip covering the transmission strip is arranged on one side of the wire harness isolation plate, which is far away from the battery cell, so that the second heat insulation strip overlapped with the first heat insulation strip is arranged on one side of the wire harness isolation plate, which is close to the battery cell, thereby avoiding heat transfer to the transmission strip when the battery cell is out of control, and ensuring the normal signal transmission and signal acquisition of the transmission strip.

Description

Gather integrated component and battery package

Technical Field

The application relates to the technical field of batteries, in particular to an acquisition integrated component and a battery pack.

Background

Power cells are widely used in industries such as electric vehicles, and in order to ensure that the power cells can operate within a specified voltage range and temperature range, the state of each battery unit in the battery cell module needs to be collected, for example, a voltage signal, a temperature signal and the like.

In the related art, a plastic part is generally used for a harness isolation board of a CCS (Cells Contact System, integrated busbar) assembly in a square power battery, no protection is provided during a line collection, and a collection signal may be lost when thermal runaway occurs in a battery cell.

Therefore, there is a need to design an acquisition integrated component and a battery pack to solve the above technical problems.

Disclosure of utility model

The embodiment of the application provides an acquisition integrated component and a battery pack, which can improve the technical problem that signal acquisition is invalid due to thermal runaway of an electric core of the acquisition integrated component in the existing power battery.

In a first aspect, embodiments of the present application provide an acquisition integration assembly comprising:

A harness isolation plate;

The busbar is arranged on one side of the wire harness isolation plate, which is away from the battery core, and comprises a plurality of busbar groups which are arranged along the length direction of the wire harness isolation plate, and each busbar group comprises a plurality of busbar units which are arranged along the width direction of the wire harness isolation plate;

The flexible circuit board is arranged on one side of the wire harness isolation board, which is away from the battery cell, and comprises a plurality of transmission bars arranged along the width direction of the wire harness isolation board, and the transmission bars are arranged between two adjacent bus units;

the plurality of first heat insulation strips are arranged on one side, away from the battery core, of the wire harness isolation plate, are arranged along the length direction of the wire harness isolation plate, are arranged between two adjacent bus groups, and cover the transmission strips between the two adjacent bus groups; and

The plurality of second heat insulation strips are arranged on one side, close to the battery core, of the wire harness isolation plate, and in the thickness direction of the wire harness isolation plate, the first heat insulation strips and the second heat insulation strips are provided with overlapping parts.

In one embodiment, a plurality of first grooves are formed in one side, away from the battery cell, of the wire harness isolation plate, a plurality of second grooves are formed in one side, close to the battery cell, of the wire harness isolation plate, a plurality of first heat insulation strips are embedded in the plurality of first grooves, and a plurality of second heat insulation strips are embedded in the plurality of second grooves.

In one embodiment, the harness isolation plate is provided with a plurality of first holes, and the first holes are positioned in the first grooves;

And each first heat insulation strip is provided with a plurality of second holes corresponding to the first holes, orthographic projections of the second holes on the first holes are positioned in the first holes, and each second heat insulation strip covers the plurality of first holes.

In one embodiment, the second insulating strip is provided with a first insulating portion corresponding to the first hole and a second insulating portion located at the periphery of the first insulating portion;

Wherein the thickness of the material in the first heat insulation part is smaller than the thickness of the material in the second heat insulation part.

In one embodiment, an orthographic projection of the first insulation portion onto the first aperture is located within the first aperture.

In one embodiment, the depth of the first groove is greater than or equal to the depth of the second groove, and the sum of the depth of the first groove and the depth of the second groove is less than the thickness of the harness isolation plate.

In one embodiment, the collecting and integrating assembly further includes a plurality of blocking strips disposed on the plurality of first heat insulating strips, the plurality of blocking strips being arranged along a length direction of the wire harness isolation board, an extending direction of the blocking strips being the same as an extending direction of the first heat insulating strips;

Wherein, the barrier strip set up in the second hole is followed the length direction's of pencil division board one side.

In one embodiment, in the thickness direction of the harness isolation board, a first adhesive layer and a second adhesive layer are respectively arranged on two sides of the blocking strip;

The barrier strips are bonded with the corresponding first heat insulation strips through the first adhesive layers, and the barrier strips are bonded with the target cover plate through the second adhesive layers.

In one embodiment, the first insulating strip, the second insulating strip, and the barrier strip are comprised of a high temperature resistant material.

In a second aspect, embodiments of the present application provide a battery pack including the above-described collection assembly.

The embodiment of the application has the beneficial effects that:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a top view block diagram of a collection assembly provided by an embodiment of the present application;

FIG. 2 is an exploded view of an acquisition integration assembly provided by an embodiment of the present application;

FIG. 3 is a block diagram of region A of FIG. 1 provided by an embodiment of the present application;

Fig. 4 is a cross-sectional view of the section MM of fig. 3 provided by an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the application. In the present application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

In the related art, a plastic part is generally used for a harness isolation board of a CCS component in a square power battery, no protection is provided during line collection, and a collection signal may be lost when thermal runaway occurs in a battery cell. The following provides an acquisition integrated assembly and a battery pack according to the technical problems to solve the technical problems.

Referring to fig. 1 to 4, an acquisition and integration assembly 100 is provided according to an embodiment of the present application, which includes a harness isolation board 10, a bus bar 20, a flexible circuit board 30, and a plurality of first heat insulation bars 410 and a plurality of second heat insulation bars 430.

In this embodiment, the bus bar 20 may be disposed on a side of the harness isolation board 10 facing away from the battery cell, the bus bar 20 includes a plurality of bus groups 210 arranged along a length direction of the harness isolation board 10, and each of the bus groups 210 includes a plurality of bus units 211 arranged along a width direction of the harness isolation board 10.

In this embodiment, the flexible circuit board 30 may be disposed on a side of the harness isolation board 10 facing away from the battery cell, the flexible circuit board 30 includes a plurality of transmission bars 310 arranged along a width direction of the harness isolation board 10, and the transmission bars 310 are disposed between two adjacent bus units 211.

In this embodiment, a plurality of the first heat insulation strips 410 may be disposed on a side of the harness isolation board 10 facing away from the battery cell, the plurality of the first heat insulation strips 410 may be arranged along a length direction of the harness isolation board 10, the first heat insulation strips 410 are disposed between two adjacent bus groups 210, and the first heat insulation strips 410 cover the transmission strips 310 disposed between two adjacent bus groups 210.

In this embodiment, a plurality of the second heat insulating strips 430 may be disposed at a side of the wire harness insulating board 10 near the battery cell, and the first heat insulating strips 410 and the second heat insulating strips 430 may have overlapping portions in the thickness direction of the wire harness insulating board 10.

The first heat insulation strip 410 covering the transmission strip 310 is arranged on one side of the wire harness isolation board 10 away from the battery cell, so that the second heat insulation strip 430 overlapped with the first heat insulation strip 410 is arranged on one side of the wire harness isolation board 10 close to the battery cell, heat transfer to the transmission strip when the battery cell is out of control is avoided, and signal transmission and signal collection of the transmission strip are ensured to be normal.

It should be noted that, the collection assembly 100 may be integrated in an upper cover plate of the battery pack, and the collection assembly 100 is mainly used for collecting temperature data and voltage data of the battery cells in the battery cell module, so as to detect the working state of the battery cells in real time.

It should be noted that, the collection assembly 100 may further include a voltage collection unit and a temperature collection unit disposed on the harness isolation board 10, where the voltage collection unit and the temperature collection unit are respectively electrically connected to the corresponding convergence unit 211, and the voltage temperature collection unit can collect and transmit voltage data and temperature data of the electrical core 200.

It should be noted that, the wire harness isolation board 10 may be formed by injection molding a plastic part, and the material of the wire harness isolation board 10 may be PC, PVC, PP or the like.

It should be noted that, the busbar 20, the flexible circuit board 30, the first isolation strip 410 and the second isolation strip 430 may be disposed on one side of the harness isolation board 10 facing away from the battery cells, and the other side of the harness isolation board 10 may be abutted against a plurality of battery cells in the battery cell module. Meanwhile, the harness isolation plate 10 also serves to support the bus bar 20 and provide support strength to the entire collection assembly 100.

It should be noted that, the arrangement and the number of the bus units 211 in each bus group 210 are the same, and each bus group 210 may include two rows of bus units 211, where the number of the bus units 211 in each row is the same; for example, in the structure of fig. 1, each of the bus groups 210 may include 16 bus units 211 arranged in a 2X8 arrangement.

It should be noted that, the flexible circuit board 30 may include 4 transmission bars 310, each transmission bar 310 is electrically connected to two adjacent bus units 211, and one bus unit 211 is electrically connected to only one transmission bar 310; for example, in the structure of fig. 1, each of the transfer bars 310 may be electrically connected to 4 of the bus units 211 in one of the bus groups 210.

The collecting and integrating assembly 100 is further provided with an output row, the output row is mounted on the harness isolation board 10, and the output row is electrically connected with the busbar 20. The output row in this embodiment may be a copper-aluminum composite row, where the copper-aluminum composite row is an output electrode, and is mainly characterized in that the copper row and the aluminum row are respectively nickel-plated and are welded together by polymer diffusion or ultrasonic welding, the aluminum row may be designed with a hot riveting hole connected with the wire harness isolation board 10, the copper row may be designed with a mounting hole, and connected with the output electrode base and the cell module by a bolt, the copper row may be made of T2 red copper, and the aluminum row may be made of AL1060-O.

It should be noted that, the bus bar 20 is a serial aluminum bar, the bus bar 20 can be connected with the battery cell by means of laser welding, and can conduct the current of the battery cell module, and the material of the bus bar 20 can be AL1060-O.

The technical scheme of the application is described below according to specific embodiments.

In the present application, the first heat insulation strip 410 may cover the transmission strip 310 in the flexible circuit board 30, and the second heat insulation strip 430 may prevent heat from being transferred to the transmission strip 310, and the first heat insulation strip 410 and the second heat insulation strip 430 may prevent signal transmission of the transmission strip 310 from being affected by high temperature when thermal runaway occurs in the battery cell; however, the first heat insulating strip 410 and the second heat insulating strip 430 on the harness isolation board 10 are provided in a protruding manner, which affects the flatness of the harness isolation board 10.

Referring to fig. 4, a side of the wire harness isolation board 10 facing away from the battery core may be provided with a plurality of first grooves 110, and a plurality of first heat insulation strips 410 are embedded in the plurality of first grooves 110, i.e., the plurality of first heat insulation strips 410 may be fixed in the first grooves 110; and, a plurality of second grooves 120 may be formed on a side of the wire harness isolation board 10 near the battery cell, and a plurality of the second heat insulation strips 430 may be embedded in a plurality of the second grooves 120, that is, a plurality of the second heat insulation strips 430 may be fixed in the second grooves 120.

In this embodiment, referring to fig. 1 and 2, the number of the first grooves 110 may be the same as the number of the first heat insulation strips 410, one first heat insulation strip 410 is embedded in the first groove 110, the number of the second grooves 120 may be the same as the number of the second heat insulation strips 430, and one second heat insulation strip 430 is embedded in the second groove 120; for example, in the structure of fig. 2, 6 first grooves 110 and 6 second grooves 120 are formed in the harness isolation board 10, and 6 first heat insulating strips 410 and 6 second heat insulating strips 430 are embedded in corresponding grooves in the harness isolation board 10.

In this embodiment, since the first heat insulating strip 410 needs to cover the transmission strip 310 and the first heat insulating strip 410 is in the corresponding first groove 110, when the first heat insulating strip 410 spans the first groove 110, a part of the transmission section of the transmission strip 310 is embedded in the first groove 110, a part of the transmission section of the transmission strip 310 is closely attached to the inner wall of the first groove 110, the first heat insulating strip 410 presses the part of the transmission section of the transmission strip 310, and the first heat insulating strip 410 is embedded in the first groove 110; for example, in the configuration of fig. 1, a first heat insulating strip 410 is used to press together portions of the 4 transport sections of the transport strip 310.

In this embodiment, since a part of the transmission section of the transmission bar 310 and the first heat insulation bar 410 are disposed in the first groove 110; the sum of the thicknesses of the first heat insulating strip 410 and the transmission strip 310 may be greater than the depth of the first groove 110, i.e., the upper surface of the first heat insulating strip 410 exceeds the upper surface of the wire harness isolation board 10, so that the blocking height of the blocking strip 420 disposed on the first heat insulating strip 410 can be increased, and the metal substances are blocked from being sputtered into the bus groups 210 disposed at two sides of the first heat insulating strip 410, so that the technical problem of short circuit of the series-connected battery cells is avoided; meanwhile, the sum of the thicknesses of the first heat insulation strip 410 and the transmission strip 310 may be smaller than the depth of the first groove 110, so that the first heat insulation strip 410 can be embedded in the first groove 110, avoiding the peeling of the first heat insulation strip 410; in addition, in order to ensure that the upper surface of the first insulation strip 410 and the upper surface of the wire harness insulation board 10 are on the same plane, the depth of the first groove 110 needs to be equal to the sum of the thicknesses of the first insulation strip 410 and the transmission strip 310, and the flatness of the wire harness insulation board 10 can be ensured on the premise of ensuring the fixing and blocking effect of the first insulation strip 410.

In the present embodiment, the depth of the first groove 110 is smaller than the thickness of the harness isolation board 10, and the thickness of the first heat insulating strip 410 is 0.5mm to 1mm. For example, the thickness of the wire harness insulation board 10 may be 1mm to 1.5mm, the depth of the first groove 110 may be specifically set according to the thickness of the wire harness insulation board 10, for example, when the thickness of the wire harness insulation board 10 is 1.5mm, the depth of the first groove 110 may be 0.8mm, and the thickness of the first heat insulation strip 410 may be 0.7mm.

In the present embodiment, the depth of the second groove 120 is smaller than the thickness of the harness isolation board 10, and the thickness of the second heat insulating strip 430 is 0.3mm to 0.8mm. For example, the thickness of the wire harness insulation board 10 may be 1mm to 1.5mm, the depth of the first groove 110 may be specifically set according to the thickness of the wire harness insulation board 10, for example, when the thickness of the wire harness insulation board 10 is 1.5mm, the depth of the second groove 120 may be 0.5mm, and the thickness of the second heat insulation bar 430 may be 0.3mm.

In this embodiment, since the first groove and the second groove 120 are respectively provided on both sides of the wire harness isolation board 10, the sum of the thicknesses of the first groove and the second groove 120 needs to be smaller than the thickness of the wire harness isolation board 10, and the sum of the thicknesses of the two needs to be at least 0.2mm smaller than the thickness of the wire harness isolation board 10.

In this embodiment, the materials of the first insulating strip 410 and the second insulating strip 430 may be high temperature resistant insulating materials.

In the related art, the battery cell needs a corresponding air release channel to release air flow released when the explosion-proof valve of the battery cell is opened, so as to ensure the normal operation of the battery cell; when the battery cell is out of control, various metal substances possibly carried along with the air flow when the explosion-proof valve of the battery cell is opened can splash onto the busbar 20, so that the series battery cells are short-circuited.

Referring to fig. 1 to 4, the harness isolation board 10 may be provided with a plurality of first holes 501, the plurality of first holes 501 are located in the plurality of first grooves 110, each of the first heat insulation strips 410 is provided with a plurality of second holes 502 corresponding to the first holes 501, and an orthographic projection of the second holes 502 on the first holes 501 is located in the first holes 501.

In this embodiment, the arrangement of the plurality of first holes 501 and the plurality of second holes 502 provides an avoidance space for the airflow sprayed out by the battery cell when the valve is opened, and at the same time, the orthographic projection of the second holes 502 on the first holes 501 is located in the first holes 501, that is, the open area of the second holes 502 may be smaller than or equal to the open area of the first holes 501, so that the battery cell with thermal runaway can be blocked, and the metal substance carried out by the airflow when the valve is opened, so that the splashing of the metal substance to the busbar 20 is avoided, and the risk of short circuit of the series-connected battery cells is improved.

In this embodiment, the second hole 502 may be formed as an ellipse, the long side of the ellipse may be parallel to the first insulation strip 410, and the short side of the ellipse may be perpendicular to the first insulation strip 410; the second hole 502 is formed in an elliptical shape, so that the overflow of the metal material in the length direction of the wire harness isolation board 10 can be reduced, and the metal material carried by the air current overflows in the length direction of the wire harness isolation board 10, and the first heat insulation strip 410 which is resistant to high temperature and is insulated is arranged in the direction, so that even if the metal material is sputtered on the first heat insulation strip 410, the overall influence on the battery module is small.

When the air pressure in the battery core reaches the pressure relief value of the explosion-proof valve, the high-temperature air in the battery core is discharged from the explosion-proof valve to the outside of the battery core, and the high-temperature air can be sequentially discharged to the pressure relief channel through the second hole 502 and the first hole 501; however, since there are multiple cells corresponding to the first heat insulating strip 410, that is, the multiple cells corresponding to the first heat insulating strip 410 have the same pressure release channel, when one of the cells is subjected to pressure release due to thermal runaway, the discharged high-temperature gas can enter the cell which is not subjected to pressure release through the adjacent first hole 501 and second hole 502, so that the adjacent cells are affected.

In this embodiment, referring to fig. 4, each of the second heat insulating strips 430 may cover a plurality of the first holes 501, that is, the second heat insulating strips 430 may cover all of the plurality of the first holes 501 corresponding to the first heat insulating strips 410, so as to prevent high temperature gas generated by a voltage releasing cell from entering an adjacent cell without voltage releasing, thereby ensuring that each cell does not interfere with each other when voltage releasing is performed.

Referring to fig. 4, the second insulating strip 430 is provided with a first insulating portion 431 corresponding to the first hole 501 and a second insulating portion 432 located at the periphery of the first insulating portion 431, and the thickness of the material in the first insulating portion 431 is smaller than the thickness of the material in the second insulating portion 432.

When the air pressure in the battery cell reaches the pressure relief value of the explosion-proof valve, the high-temperature air in the battery cell is discharged from the explosion-proof valve to the outside of the battery cell, but if the thickness of the second heat insulation strip 430 is larger, the second heat insulation strip 430 cannot be broken when the battery cell is subjected to pressure relief; in the present application, the thickness of the insulating material in the first insulating portion 431 is reduced, so that the second insulating portion 432 is more easily broken by the high-temperature gas, and the explosion-proof valve can realize the pressure release function.

In this embodiment, the orthographic projection of the first insulating portion 431 on the first hole 501 is located in the first hole 501. That is, the area of the first heat insulation portion 431 may be smaller than or equal to the area of the first hole 501, so that the first heat insulation portion 431 is as close to the central area of the first hole 501 as possible, so as to avoid the metal substances carried along with the air flow from splashing onto the busbar 20.

In this embodiment, since the metal substance carried out with the air flow may splash onto the first heat insulation strip 410 during the pressure release of the battery cell, in order to ensure that the metal substance with a certain temperature affects the transmission strip, the present application may make the depth of the first groove 110 greater than or equal to the depth of the second groove 120, that is, the thickness of the first heat insulation strip 410 greater than or equal to the thickness of the second heat insulation strip 430, thereby increasing the heat insulation capability of the harness isolation board 10 on the side facing away from the battery cell.

In the above embodiment, although the arrangement of the first heat insulating strip 410 may improve the possibility that the metal substance carried along with the air flow splashes onto the busbar 20 when the cell is opened to some extent, it may still splash onto the busbar 20 along with the air flow due to uncertainty in the direction of the air flow ejected from the first hole 501.

In this embodiment, referring to fig. 1 to 4, the collecting and integrating assembly 100 further includes a plurality of blocking strips 420 disposed on the plurality of first heat insulation strips 410, the plurality of blocking strips 420 are arranged along the length direction of the harness isolation board 10, the extending direction of the blocking strips 420 is the same as the extending direction of the first heat insulation strips 410, and the blocking strips 420 are disposed at one side of the second holes 502 along the length direction of the harness isolation board 10.

In this embodiment, at least one blocking strip 420 may be disposed on one of the first heat insulating strips 410, for example, two blocking strips 420 may be disposed on one of the first heat insulating strips 410 in this embodiment, and two blocking strips 420 are disposed on two sides of the second hole 502 on the first heat insulating strip 410.

Referring to fig. 1 to 4, two blocking bars 420 are disposed on each first insulating bar 410, the length of the blocking bars 420 in the width direction of the harness isolation board 10 may be equal to the length of the first insulating bars 410, and the side surfaces of each blocking bar 420 may be on the same plane as the side surfaces of the first insulating bars 410.

In this embodiment, when the metal substance is carried out by the air flow inside the battery cells, the arrangement of the blocking strips 420 prevents the metal substance from sputtering into the busbar 210 located at two sides of the first heat insulating strip 410, so as to avoid the technical problem of short circuit of the series battery cells.

In this embodiment, the thickness of the blocking bar 420 may be greater than or equal to the thickness of the adjacent bus bar units 211, that is, the distance from the top surface of the blocking bar 420 to the bottom surface of the harness isolation board 10 needs to be greater than or equal to the distance from the top surface of the bus bar units 211 to the bottom surface of the harness isolation board 10. Since the barrier rib 420 primarily blocks the metal material overflowing from the second hole 502 from being sputtered into the bus bar 20, if the thickness of the barrier rib 420 is smaller than that of the adjacent bus bar unit 211, there is also a possibility that the metal material is sputtered into the bus bar unit 211 due to a height difference, and when the thickness of the barrier rib 420 is greater than or equal to that of the adjacent bus bar unit 211, the barrier rib 420 may further block the sputtered metal material.

In this embodiment, the barrier 420 may be formed of a high temperature resistant insulating material.

In this embodiment, since the harness isolation board 10 is generally integrated in the upper cover plate of the battery pack, in the thickness direction of the harness isolation board 10, the two sides of the barrier strip 420 are further provided with a first adhesive layer and a second adhesive layer, respectively, the barrier strip 420 is bonded to the corresponding first heat insulation strip 410 through the first adhesive layer, and the barrier strip 420 is bonded to the target cover plate through the second adhesive layer, that is, the barrier strip 420 is bonded to the upper cover plate of the battery pack through the second adhesive layer.

In this embodiment, the combined structure of the first heat insulating strip 410, the two blocking strips 420 and the upper cover plate makes the metal substances overflowing from the explosion-proof valve of the battery cell blocked by the upper cover plate and the two blocking strips 420, so that the metal substances can fall onto the corresponding first heat insulating strip 410, and the overflowing metal substances are prevented from being sputtered into the busbar 20.

Meanwhile, the arrangement of the first heat insulating strip 410 and the blocking strip 420 makes the upper part of the explosion-proof valve form a smoke-isolated sealed exhaust channel, so as to prevent the high-temperature gas and metal substances discharged by the pressure release valve from spreading to two sides.

In the related art, since the battery pack is generally formed by connecting a plurality of cells in series, and the heat dissipation intensity of the cells located in the central area of the battery pack is smaller than that of the cells located in the peripheral area of the battery pack, the operating temperature of the cells in the central area is higher than that of the cells in the peripheral area, and when the explosion-proof valve of the cells is opened, the air flow speed released by the cells in the central area is higher than that released by the cells in the peripheral area, so that the bus 20 corresponding to the cells in the central area is prone to be short-circuited.

In this embodiment, in the central region of the collecting and integrating assembly 100, two blocking strips 420 on the first heat insulating strip 410 have a first spacing, and in the peripheral region of the collecting and integrating assembly 100, two blocking strips 420 on the first heat insulating strip 410 have a second spacing, and the first spacing is smaller than the second spacing.

In this embodiment, because the working temperature of the core of the central area is higher, when the explosion-proof valve of the core of the central area is opened, the sprayed metal substances are fast and have larger angles, but the distance between the two blocking strips 420 located in the central area is reduced, so that the movement distance of the metal substances in the length direction of the wire harness isolation plate 10 is reduced, the large-angle metal substances sprayed from the second holes 502 are blocked by the blocking plates, and the technical problem that short circuits are easy to occur due to the busbar 20 in the central area is solved.

In this embodiment, referring to fig. 1, the wire harness isolation board 10 is further provided with a plurality of second grooves 130, a plurality of the current collecting units 211 are embedded in the plurality of second grooves 130, one of the current collecting units 211 is disposed in one of the second grooves 130, and the current collecting units 211 can be electrically connected with the corresponding electrical core through a laser welding manner.

The application also provides a battery pack, which can comprise the acquisition integrated assembly 100, a plurality of electric cores, a module shell, an upper cover plate and a bottom plate. The module housing, the upper cover plate and the bottom plate enclose to form a containing cavity, and a plurality of the battery cells and the collection integrated assembly 100 are arranged in the containing cavity.

In this embodiment, the upper cover plate is used to protect the upper part of the battery pack, and the upper cover plate may be connected to the collection assembly 100 through plastic rivets and glue layers on the barrier strips; the upper cover plate can be made of PC, PP, PVC plastic materials.

In this embodiment, the bottom plate may be an insulating bottom film for protecting the bottom of the battery pack, and the bottom plate may be adhered to the bottom surface of the battery cell by using a double sided tape; the material of the bottom plate can be PET, PVC and other film materials.

The foregoing has outlined rather broadly the more detailed description of embodiments of the application, wherein the principles and embodiments of the application are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.

Claims

1. An acquisition integration assembly, comprising:

A harness isolation plate;

2. The collection assembly of claim 1, wherein a plurality of first grooves are formed in a side, facing away from the battery cell, of the wire harness isolation plate, a plurality of second grooves are formed in a side, close to the battery cell, of the wire harness isolation plate, a plurality of first heat insulation strips are embedded in the plurality of first grooves, and a plurality of second heat insulation strips are embedded in the plurality of second grooves.

3. The collection assembly of claim 2, wherein a depth of the first recess is greater than or equal to a depth of the second recess, and a sum of the depth of the first recess and the depth of the second recess is less than a thickness of the harness isolation plate.

4. The collection assembly of claim 2, wherein the harness isolation plate is provided with a plurality of first holes, the plurality of first holes being positioned in the plurality of first grooves;

5. The collection assembly of claim 4, wherein the second insulating strip is provided with a first insulating portion corresponding to the first aperture and a second insulating portion located at a periphery of the first insulating portion;

6. The collection assembly of claim 4, wherein the second insulating strip is provided with a first insulating portion corresponding to the first aperture and a second insulating portion located at a periphery of the first insulating portion;

Wherein, the orthographic projection of the first heat insulation part on the first hole is positioned in the first hole.

7. The collection assembly of any one of claims 4 to 6, further comprising a plurality of barrier strips disposed on a plurality of the first insulation strips, the plurality of barrier strips being aligned along a length direction of the harness insulation board, an extension direction of the barrier strips being the same as an extension direction of the first insulation strips;

8. The acquisition integrated assembly according to claim 7, wherein in a thickness direction of the harness isolation board, a first adhesive layer and a second adhesive layer are further provided on both sides of the barrier strip, respectively;

9. The collection assembly of claim 7, wherein the first insulation strip, the second insulation strip, and the barrier strip are comprised of a high temperature resistant material.

10. A battery pack comprising the collection assembly of any one of claims 1 to 9.