Collecting device

Abstract

The utility model relates to the technical field of batteries, and discloses a collecting device which comprises a blister tray, a blister upper cover, a collecting assembly and a plurality of busbars, the collection assembly and the plurality of busbars are supported by the blister tray, the blister upper cover is connected with the blister tray, the collection assembly and the plurality of busbars are all located between the blister tray and the blister upper cover, the busbars are used for being electrically connected with a pole of a battery cell, and the collection assembly and the plurality of busbars are arranged on the blister tray. The acquisition assembly is electrically connected with the plurality of busbars and is led out outwards, so that the electrical property of the battery cell pole is led out outwards; compared with a traditional collecting device, the collecting device has the advantages that the cost can be greatly reduced, the production efficiency of the collecting device can be improved due to the fact that the hot press forming speed of the plastic uptake part is extremely high, and the purposes of reducing cost and increasing efficiency are really achieved on the basis that the overall effect of the collecting device is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a collection device. Background Art

[0002] In order to increase the capacity, existing battery modules usually have multiple battery cells connected in series, and a collection device is usually set on the battery module. The collection device is used to collect the voltage information or temperature information of each battery cell in the battery module to facilitate real-time monitoring of the charging or discharging status of each battery cell. At the same time, according to the temperature conditions, when the temperature value of the battery cell is high, the battery cell can be cooled in time through an external cooling module, so that the battery module can operate within the preset temperature range, thereby ensuring the safety of the battery module during use, reducing safety hazards during use of the battery module, and also extending the service life of the battery module.

[0003] Specifically, the structure of existing data collection devices typically includes an injection-molded base and an injection-molded top cover. A data collection assembly and multiple busbars are positioned between the base and the top cover. The bottom cover supports the busbars and data collection assembly, while the top cover protects the busbars and the assembly. The top cover also prevents operators from accidentally touching the data collection assembly or busbars, potentially causing electric shock. The busbars are electrically connected to the battery cell poles, and the data collection assembly utilizes an FPC or wiring harness structure to connect to the multiple busbars and lead them outward, allowing the electrical properties of each battery cell pole to be exposed, facilitating the collection of temperature or voltage data. Because the base and top cover of existing data collection devices are both injection-molded, the overall device suffers from disadvantages such as thickness, weight, and cost. Furthermore, the heavy weight of the data collection device limits the improvement of battery energy density. Utility Model Content

[0004] The purpose of the utility model is to provide a collection device, which mainly solves the technical problem of how to reduce the weight of the collection device and lower the manufacturing cost of the collection device.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A collection device, comprising a blister tray, a blister cover, a collection component and a plurality of bus bars;

[0007] The blister tray supports the collection component and the multiple busbars, the blister cover is connected to the blister tray, and the collection component and the multiple busbars are located between the blister tray and the blister cover. The busbar is used to be electrically connected to the poles of the battery cell, and the collection component is electrically connected to the multiple busbars respectively and led outward to lead the electrical properties of the battery cell poles outward.

[0008] In one of the technical solutions, the collection component includes multiple wire harnesses, each of which is electrically connected to a corresponding bus and led outward, and the collection device also includes a cable tie. The blister tray is provided with at least one hole structure for the cable tie to be passed through, and the hole structure includes a first through hole and a second through hole passing through the blister tray. The cable tie passes through the first through hole and out from the second through hole and simultaneously bundles the blister tray and at least one of the wire harnesses.

[0009] In one of the technical solutions, a recessed receiving groove and a plurality of recessed limiting grooves are provided on a side of the blister tray facing the blister cover, so that a first protruding structure corresponding to the receiving groove and a plurality of second protruding structures corresponding to the plurality of limiting grooves are formed on a side of the blister tray facing away from the blister cover. The plurality of wiring harnesses are accommodated in the receiving groove, and each of the busbars is limited in a corresponding one of the limiting grooves. The hole structure is arranged at the bottom of the receiving groove, and the first through hole and the second through hole both pass through the bottom of the receiving groove. A penetrating avoidance hole is provided on the bottom surface of the limiting groove, and the avoidance hole is used to avoid the connection between the busbar and the battery cell pole.

[0010] In one of the technical solutions, a clamping column is protruding from the side wall of the limiting groove, and the clamping column abuts against the side of the bus. A buckle portion is provided on the blister tray on the side away from the clamping column, and the buckle portion extends to the top of the bus to limit the bus from detaching from the limiting groove.

[0011] In one of the technical solutions, a channel is connected between the receiving groove and the limiting groove, and the wiring harness connected to the bus passes through the channel from the limiting groove and is received in the receiving groove.

[0012] In one technical solution, the busbar includes two connecting bodies and a bent portion connected between the two connecting bodies, wherein one connecting body is used to connect the pole of one battery cell, and the other connecting body is used to connect the pole of another adjacent battery cell;

[0013] The bottom surface of the limiting groove is provided with two penetrating avoidance holes, one of which is used to avoid the connection between one connecting body and the pole of one of the battery cells, and the other avoidance hole is used to avoid the connection between the other connecting body and the pole of another adjacent battery cell. The bottom surface of the limiting groove is provided with a concave recessed portion at a position between the two avoidance holes, and the recessed portion is used to avoid the bending portion.

[0014] In one of the technical solutions, the wiring harness includes a wire body, a clamping member and a conductive member; the wire body is connected to the conductive member, the clamping member bends and simultaneously clamps the conductive member and the inner core of the wire body, and the conductive member is connected to the bus.

[0015] In one of the technical solutions, at least one of the wiring harnesses is connected to a water droplet type temperature sensor, and the water droplet type temperature sensor is in contact with the bus bar.

[0016] In one of the technical solutions, the collection component also includes a connector and a mounting plate, the mounting plate is fixed to the side of the blister tray facing the blister cover, the connector is bonded and fixed to the mounting plate, the ends of the multiple wire harnesses are integrated in the connector, the blister tray and the mounting plate are fixed to each other by rivets, the blister tray is provided with the first through hole and the second through hole in the area overlapping with the mounting plate, the mounting plate is provided with a third through hole and a fourth through hole, the third through hole is connected to the first through hole, and the fourth through hole is connected to the second through hole, the cable tie is simultaneously passed through the first through hole, the second through hole, the third through hole and the fourth through hole, and simultaneously bundles the blister tray, the mounting plate and the multiple wire harnesses.

[0017] In one of the technical solutions, a plurality of recessed mounting holes are provided on the outer periphery of a side of the blister tray facing the blister cover, so that a plurality of raised reinforcing columns are formed on the side of the blister tray facing away from the blister cover, and a plurality of raised plug-in columns are provided on the blister cover, and each of the plug-in columns is plugged into a corresponding mounting hole in an interference fit manner.

[0018] Compared with the prior art, the collection device provided by the present invention has at least the following beneficial effects:

[0019] Because the collection device of this solution utilizes a blister tray and a blister cover, it significantly reduces costs compared to traditional collection devices with injection-molded bases and covers. Furthermore, because the blister parts are thermoformed at an extremely high speed, the production efficiency of the collection device can be improved. In other words, this solution achieves the goal of reducing costs and increasing efficiency without affecting the overall effectiveness of the collection device. Furthermore, because the blister tray and blister cover of this solution are both lightweight blister parts, the overall mass of the collection device can be reduced, thereby increasing the energy density of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of a collection device provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of a collection device provided in an embodiment of the present application after the blister cover is hidden;

[0023] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0024] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0025] Figure 5 A schematic structural diagram of the front side of a blister tray provided in an embodiment of the present application;

[0026] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0027] Figure 7 A schematic structural diagram of the back of a blister tray provided in an embodiment of the present application;

[0028] Figure 8 A schematic diagram of the structure of a bus provided in an embodiment of the present application;

[0029] Figure 9 This is a schematic structural diagram of the back side of the blister cover provided in an embodiment of the present application.

[0030] Among them, the reference numerals in the figures are:

[0031] 41. Blister tray; 410. Channel; 411. Hole structure; 4111. First through hole; 4112. Second through hole; 412. Receiving slot; 413. Limiting slot; 414. Avoidance hole; 415. Recessed portion; 416. Mounting hole; 417. Reinforcement column; 418. Clamping column; 419. Buckle portion;

[0032] 42. Blister cover; 421. Connecting column; 422. Reinforcement rib structure; 423. Protective part;

[0033] 43. Collection component; 431. Wire harness; 4311. Wire body; 4312. Clamping member; 4313. Conductive member; 432. Water droplet-type temperature sensor;

[0034] 44. Busbar; 441. Connecting body; 442. Bend portion;

[0035] 45. Cable tie; 46. Connector; 47. Mounting plate; 471. Third through hole; 472. Fourth through hole; 48. First protrusion structure; 49. Second protrusion structure. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0037] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0038] It should be understood that the terms, "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0041] Please also refer to Figures 1 to 4This embodiment provides a collection device, which mainly includes a blister tray 41, a blister cover 42, a collection component 43 and multiple bus bars 44, wherein the blister tray 41 and the blister cover 42 are both thermoformed blister parts, and the blister tray 41 is used to simultaneously support the collection component 43 and the multiple bus bars 44, the blister cover 42 and the blister tray 41 are connected, and the collection component 43 and the multiple bus bars 44 are all located between the blister tray 41 and the blister cover 42. In other words, the blister cover 42 is used to cover the collection component 43 and the multiple bus bars 44 to protect the bus bars 44 and the collection component 43. At the same time, the blister cover 42 also prevents the operator from accidentally touching the collection component 43 or the bus bar 44 and causing electric shock. Among them, each busbar 44 is used to electrically connect to the pole of the battery cell, and the collection component 43 uses a flexible circuit board (i.e., FPC) or a wiring harness structure to connect to multiple busbars 44 and lead them outward, so that the electrical properties of the pole of each battery cell can be led outward, so that the voltage data or temperature data of each battery cell can be collected. Compared with the traditional collection device containing an injection-molded base and an injection-molded upper cover, the collection device of this solution using a blister tray 41 and a blister upper cover 42 can significantly reduce the cost. Moreover, since the speed of hot pressing the blister parts is extremely fast, the production efficiency of the collection device can be improved. In other words, the use of this solution achieves the goal of reducing costs and increasing efficiency without affecting the overall effectiveness of the collection device. In addition, since the blister tray 41 and the blister upper cover 42 of this solution are both lightweight blister parts, the overall mass of the collection device can be reduced to improve the energy density of the battery module.

[0042] In this embodiment, the bus 44 is used to connect two adjacent battery cells in series or in parallel. In other words, each bus 44 is connected to the first pole of one of the battery cells and the second pole of the other battery cell. When the polarities of the first pole and the second pole are opposite, the bus 44 is used to connect the two battery cells in series. When the polarities of the first pole and the second pole are the same, the bus 44 is used to connect the two battery cells in parallel.

[0043] Please also refer to Figure 2 and Figure 3The collection assembly 43 of this embodiment is designed to include multiple wire harnesses 431, each electrically connected to a corresponding busbar 44. The wire harnesses 431 can direct the polarity of the battery cells connected to the busbars 44. Using wire harnesses 431 to direct the polarity of the battery cells can further reduce the cost of the collection device compared to the current structure of using FPCs with numerous conductive lines. To ensure the stability of the wire harnesses 431 on the blister tray 41, the collection device of this embodiment also includes cable ties 45. Furthermore, one or more holes 411 are provided on the blister tray 41 for the cable ties 45 to pass through. Specifically, this hole structure 411 includes a first through hole 4111 and a second through hole 4112 that penetrate the blister tray 41. During installation, the blister tray 41 and one or more wire harnesses 431 can be simultaneously bundled by inserting the cable tie 45 through the first through hole 4111 and exiting through the second through hole 4112, thereby firmly restraining the wire harness 431 on the blister tray 41 to improve the stability of the collection device during use. Compared with the current collection assembly that uses FPC bonded to the injection molded tray, due to the higher cost of FPC and the aging and failure of the glue between the FPC and the injection molded tray, this solution uses the wire harness 431 to derive the polarity of the battery cell poles and uses the cable tie 45 to fix the wire harness 431. This has the advantages of a simpler structure, higher reliability in fixing the collection assembly 43, lower failure rate, and lower cost. Ultimately, the cost can be reduced by about 50%, truly achieving the goal of reducing costs and increasing efficiency.

[0044] Please refer again Figure 3 The wiring harness 431 of this embodiment specifically includes a wire body 4311, a clamping member 4312, and a conductive member 4313. The conductive member 4313 is preferably a nickel sheet with good conductivity. The conductive member 4313 is welded to a corresponding busbar 44. By providing the conductive member 4313, the contact area between the wiring harness 431 and the busbar 44 can be increased, thereby ensuring the stability of the connection between the wiring harness 431 and the corresponding busbar 44. The wire body 4311 and the conductive member 4313 are connected, and the clamping member 4312 is bent and simultaneously clamps the conductive member 4313 and the inner core of the wire body 4311, so that the wire body 4311 can still maintain the reliability of the mutual connection with the conductive member 4313 under a large tensile force, thereby reducing the risk of failure of the connection between the wiring harness 431 and the busbar 44. The clamping member 4312 and the conductive member 4313 can be a separate connection structure or an integrated structure.

[0045] See also Figure 4At least one wiring harness 431 is connected to a water droplet-type temperature sensor 432. The water droplet-type temperature sensor 432 and the bus 44 are bonded to each other by thermally conductive adhesive. The water droplet-type temperature sensor 432 is used to obtain temperature data of the bus 44. Since the bus 44 is connected to the battery cell pole, the water droplet-type temperature sensor 432 is equivalent to being used to obtain the internal temperature of the battery cell, so that corresponding control can be performed according to the actual temperature of the battery cell (such as automatically cooling the battery cell). Compared with traditional patch-type temperature sensors, the water droplet-type temperature sensor 432 has the advantages of being cheaper, simpler to fix, and more secure.

[0046] Please refer again Figure 4 The collection component 43 also includes a connector 46. The ends of the multiple wire harnesses 431 are integrated in this connector 46. In order to reliably fix the connector 46, the collection device of this embodiment also fixes a hard mounting plate 47 on the side of the blister tray 41 facing the blister cover 42. The mounting plate 47 and the blister tray 41 are preferably fixed by riveting with rivets. The connector 46 and the mounting plate 47 are fixed by glue. The mounting plate 47 is preferably an epoxy resin plate with suitable hardness and good thermal insulation and insulation properties. More specifically, the blister tray 41 is provided with the above-mentioned first through hole 4111 and the second through hole 4112 in the area overlapping with the mounting plate 47, and the mounting plate 47 is provided with a penetrating third through hole 471 and a penetrating fourth through hole 472, and the third through hole 471 and the first through hole 4111 are interconnected, and the fourth through hole 472 and the second through hole 4112 are interconnected. When the cable tie 45 is simultaneously passed through the first through hole 4111, the second through hole 4112, the third through hole 471 and the fourth through hole 472, the cable tie 45 can bundle the end positions of the blister tray 41, the mounting plate 47 and the multiple wire harnesses 431 together to constrain the end positions of the multiple wire harnesses 431, thereby improving the stability of the collection device during use.

[0047] Please also refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 6The blister tray 41 is provided with a recessed receiving groove 412 on one side facing the blister cover 42, so that a first protruding structure 48 corresponding to the receiving groove 412 is formed on the side of the blister tray 41 facing away from the blister cover 42. The blister tray 41 is also provided with a plurality of recessed limiting grooves 413 on one side facing the blister cover 42, so that a plurality of second protruding structures 49 corresponding to the plurality of limiting grooves 413 are formed on the side of the blister tray 41 facing away from the blister cover 42. The aforementioned plurality of wiring harnesses 431 are all accommodated in this receiving groove 412, and each bus 44 is limited in a corresponding limiting groove 413, ensuring that the bus 44 is firmly fixed in the blister tray 41, thereby improving the stability of the collection device. The above-mentioned multiple hole structures 411 are arranged at the bottom of the receiving groove 412, that is, the first through hole 4111 and the second through hole 4112 both pass through the bottom of the receiving groove 412. By setting the receiving groove 412 and the multiple limiting grooves 413, it can not only play the role of accommodating multiple wire harnesses 431 and limiting each bus 44, but also form a first protrusion structure 48 and a second protrusion structure 49 on the blister tray 41, solving the problem of low structural strength of traditional hot-pressed blister parts due to their overly flat structure, so that the blister tray 41 can have sufficient structural strength to simultaneously support multiple wire harnesses 431 and multiple buses 44, thereby improving the reliability of the collection device.

[0048] Please refer to the Figure 2 、 Figure 3 、 Figure 5 and Figure 6 The bottom surface of the limiting groove 413 is provided with a through avoidance hole 414, which is used to avoid the mutual connection between the busbar 44 and the battery cell pole. Since the busbar 44 of this embodiment is connected to the poles of two battery cells at the same time, the bottom surface of the limiting groove 413 is provided with two through avoidance holes 414. For details, please refer to Figure 8The busbar 44 includes two connecting bodies 441 and a bend 442 connecting the two connecting bodies 441. One of the avoidance holes 414 on the bottom surface of the limiting groove 413 is used to prevent one connecting body 441 from connecting to the pole of one battery cell, and the other avoidance hole 414 is used to prevent the other connecting body 441 from connecting to the pole of another adjacent battery cell. This allows one connecting body 441 to connect to the pole of one adjacent battery cell, and the other connecting body 441 to connect to the pole of another adjacent battery cell, thereby allowing the busbar 44 to connect two adjacent battery cells in series or in parallel. The provision of the bendable and deformable bend 442 allows the relative position of the two connecting bodies 441 on the busbar 44 to automatically change as the two adjacent battery cells expand, ensuring that the busbar 44 can maintain a reliable connection with the corresponding two battery cells when the battery cells expand, further improving the reliability of the collection device. In addition, this embodiment also provides a recessed portion 415 on the bottom surface of the limiting groove 413. The recessed portion 415 is located between the two avoidance holes 414. In addition to being used to avoid the bending portion 442, the recessed portion 415 can also weaken the flatness of the blister tray 41, that is, the recessed portion 415 can further improve the structural strength of the blister tray 41 in the area supporting the bus 44, so that the blister tray 41 has more sufficient structural strength to support the metal and relatively heavy bus 44, thereby further improving the reliability of the collection device.

[0049] Please also refer to Figure 5 and Figure 7 , a plurality of recessed mounting holes 416 are provided on the outer edge of the side of the blister tray 41 facing the blister cover 42, so that a plurality of raised reinforcing columns 417 are formed on the outer edge of the side of the blister tray 41 facing away from the blister cover 42. The plurality of reinforcing columns 417 on the outer edge can improve the structural strength of the outer periphery of the blister tray 41. It is summarized here that by designing the blister tray 41 to have a recessed receiving groove 412, a plurality of recessed limiting grooves 413, a recessed portion 415 provided at the bottom of the limiting groove 413, and a plurality of reinforcing columns 417, the overall structure of the blister tray 41 will not be too flat, that is, the blister tray 41 has extremely high structural strength even though it is relatively thin, so as to improve the stability of the blister tray 41 in supporting multiple wiring harnesses 431 and multiple bus bars 44 at the same time. Correspondingly, please refer to Figure 9The blister cover 42 is provided with a plurality of protruding plug-in posts 421. Each plug-in post 421 is plugged into a corresponding mounting hole 416 of the blister tray 41 in an interference fit manner to achieve mutual fixation between the blister cover 42 and the blister tray 41. Similarly, the plurality of protruding plug-in posts 421 can increase the structural strength of the blister cover 42. If the blister cover 42 has a large shape, in order to further improve the structural strength of the blister cover 42, a reinforcing rib structure 422 can be provided on the blister cover 42 to avoid the disadvantage that the blister cover 42 is very soft after traditional hot pressing. In addition, please refer to Figure 1 and Figure 9 The blister cover 42 is provided with an upwardly protruding protective portion 423 in the area corresponding to the lower connector 46 . This protective portion can cover the connector 46 and provide insulation protection for the connector 46 .

[0050] Please also refer to Figure 3 and Figure 6 Preferably, a protruding post 418 can be provided on the sidewall of the retaining groove 413. By designing the protruding post 418 to abut the side of the busbar 44, the busbar 44 is more securely fixed within the retaining groove 413. Furthermore, a latch portion 419 can be provided on the side of the blister tray 41 facing away from the latch portion 418. The latch portion 419 extends to the top of the busbar 44 to prevent the busbar 44 from disengaging from the retaining groove 413, thereby ensuring the busbar 44 is securely retained within the retaining groove 413 and improving the reliability of the collection device. Furthermore, a channel 410 can be designed between the receiving groove 412 and the retaining groove 413 to connect them. This allows the wiring harness 431 connected to the busbar 44 to pass through the channel 410 from the retaining groove 413 and be received within the receiving groove 412. This solves the problem of the wiring harness 431 protruding upward relative to the blister tray 41 and reduces the overall thickness of the collection device.

[0051] The above is merely a preferred embodiment of the present invention and only specifically describes the technical principles of the present invention. These descriptions are intended only to explain the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be imagined by those skilled in the art without inventive effort, shall be included within the scope of protection of the present invention.

Claims

1. A collection device, characterized in that: It includes a blister tray (41), a blister cover (42), a collection component (43) and a plurality of busbars (44); The blister tray (41) supports the collection component (43) and the plurality of busbars (44); the blister cover (42) is connected to the blister tray (41); and the collection component (43) and the plurality of busbars (44) are located between the blister tray (41) and the blister cover (42); the busbars (44) are used to be electrically connected to the poles of the battery cells; the collection component (43) is electrically connected to the plurality of busbars (44) and is led outwardly to lead the poles of the battery cells outwardly.

2. The collection device according to claim 1, wherein: The collection component (43) includes a plurality of wire harnesses (431), each of the wire harnesses (431) is electrically connected to a corresponding bus bar (44) and led outwardly, the collection device also includes a cable tie (45), the blister tray (41) is provided with at least one hole structure (411) for the cable tie (45) to pass through, the hole structure (411) includes a first through hole (4111) and a second through hole (4112) passing through the blister tray (41), the cable tie (45) passes through the first through hole (4111) and passes through the second through hole (4112) and simultaneously binds the blister tray (41) and at least one of the wire harnesses (431).

3. The collection device according to claim 2, characterized in that: The side of the blister tray (41) facing the blister cover (42) is provided with a recessed receiving groove (412) and a plurality of recessed limiting grooves (413), so that the side of the blister tray (41) facing away from the blister cover (42) forms a first protruding structure (48) corresponding to the receiving groove (412) and a plurality of second protruding structures (49) corresponding to the plurality of limiting grooves (413), and the plurality of wiring harnesses (431) are accommodated in the receiving groove (412). Each busbar (44) is limited in a corresponding limiting groove (413), the hole structure (411) is arranged at the bottom of the receiving groove (412), and the first through hole (4111) and the second through hole (4112) both pass through the bottom of the receiving groove (412), and a through avoidance hole (414) is provided on the bottom surface of the limiting groove (413), and the avoidance hole (414) is used to avoid the mutual connection between the busbar (44) and the battery cell pole.

4. The collection device according to claim 3, characterized in that: A clamping column (418) is protruding from the side wall of the limiting groove (413), and the clamping column (418) is in contact with the side of the bus (44). A buckle portion (419) is provided on the blister tray (41) on the side away from the clamping column (418), and the buckle portion (419) extends to the top of the bus (44) to prevent the bus (44) from detaching from the limiting groove (413).

5. The collection device according to claim 3, characterized in that: A channel (410) is connected between the receiving groove (412) and the limiting groove (413); the wiring harness (431) connected to the busbar (44) passes through the channel (410) from the limiting groove (413) and is received in the receiving groove (412).

6. The collection device according to claim 3, characterized in that: The busbar (44) comprises two connecting bodies (441) and a bending portion (442) connected between the two connecting bodies (441), wherein one connecting body (441) is used to connect a pole of one battery cell, and the other connecting body (441) is used to connect a pole of another adjacent battery cell; The bottom surface of the limiting groove (413) is provided with two penetrating avoidance holes (414), one of the avoidance holes (414) is used to avoid the connection between one of the connecting bodies (441) and the pole of one of the battery cells, and the other avoidance hole (414) is used to avoid the connection between the other connecting body (441) and the pole of the adjacent battery cell. The bottom surface of the limiting groove (413) is provided with a concave recessed portion (415) at a position between the two avoidance holes (414), and the recessed portion (415) avoids the bending portion (442).

7. The collection device according to claim 2, characterized in that: The wiring harness (431) comprises a wire body (4311), a clamping member (4312) and a conductive member (4313); the wire body (4311) is connected to the conductive member (4313), the clamping member (4312) bends and simultaneously clamps the conductive member (4313) and the inner core of the wire body (4311), and the conductive member (4313) is connected to the busbar (44).

8. The collection device according to claim 2, characterized in that: At least one of the wiring harnesses (431) is connected to a water droplet-type temperature sensor (432), and the water droplet-type temperature sensor (432) is in contact with the busbar (44).

9. The collection device according to claim 2, characterized in that: The collection assembly (43) further includes a connector (46) and a mounting plate (47), wherein the mounting plate (47) is fixed to a side of the blister tray (41) facing the blister cover (42), the connector (46) and the mounting plate (47) are bonded and fixed, and ends of a plurality of the wiring harnesses (431) are integrated into the connector (46), the blister tray (41) and the mounting plate (47) are fixed to each other by rivets, and the blister tray (41) is provided with the first through hole (4111) and the second through hole (4111) in the area overlapping with the mounting plate (47). 12), a third through hole (471) and a fourth through hole (472) are provided on the mounting plate (47), the third through hole (471) is communicated with the first through hole (4111), the fourth through hole (472) is communicated with the second through hole (4112), the cable tie (45) is simultaneously passed through the first through hole (4111), the second through hole (4112), the third through hole (471) and the fourth through hole (472), and simultaneously binds the blister tray (41), the mounting plate (47) and the plurality of wire harnesses (431).

10. The collection device according to any one of claims 1 to 9, characterized in that: The outer edge of the blister tray (41) facing the blister cover (42) is provided with a plurality of recessed mounting holes (416), so that the outer edge of the blister tray (41) facing away from the blister cover (42) forms a plurality of raised reinforcing columns (417), and the blister cover (42) is provided with a plurality of raised plug-in columns (421), each of which is plugged into a corresponding mounting hole (416) in an interference fit manner.

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