Battery pack integrated busbar
By using thermal rivet fixing and snap connection between the injection molded substrate and the circuit board, the problems of high production cost and low efficiency of the integrated busbar of the battery pack are solved, and efficient and low-cost production and convenient maintenance are achieved.
Patent Information
- Application Number
- CN202422399042.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing battery pack integrated busbar has high production costs, low production efficiency, and high energy consumption of the thermosetting film process and long production time.
The injection molded substrate and the circuit board are fixed by thermal rivets, and the conductive row is fixed by snaps. The assembly process is simple, the production efficiency is high and the cost is low.
It realizes production without hot pressing, reduces production costs and time, improves production efficiency, facilitates maintenance, and reduces maintenance costs.
Smart Images
Figure CN223245838U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of new energy, and in particular to a battery pack integrated busbar. Background Art
[0002] The battery pack integrated busbar generally includes structural parts, signal acquisition components, conductive bars and other components. The conductive bars are connected to the batteries. The signal acquisition components are used to collect signals such as battery voltage and temperature. The structural parts provide mechanical support for the busbar.
[0003] The traditional production process for integrated busbars in battery packs is hot pressing, with the structural components being thermosetting films. The thermosetting films secure components such as the conductive busbar and signal acquisition assembly to form an integrated busbar. Since thermosetting films must undergo certain conditions, such as temperature, pressure, and time, production takes a long time and results in low efficiency. Thermosetting films require specific molds for thermosetting, and each set of molds can only hot-press one product at a time, resulting in high production costs. Furthermore, the thermosetting process involves lengthy heating and cooling steps, resulting in high energy consumption and low energy utilization. Overall, the production cost of integrated busbars for battery packs using thermosetting films is high, with poor economic benefits. Utility Model Content
[0004] The purpose of the present utility model is to provide a battery pack integrated busbar to solve the technical problem of high production cost of battery pack integrated busbar in the prior art.
[0005] In the first aspect, the utility model provides a battery pack integrated busbar, including an injection-molded substrate, a circuit board and a conductive busbar. The injection-molded substrate and the circuit board are fixed by hot riveting. The injection-molded substrate is provided with a mounting groove, and the conductive busbar is connected to the mounting groove. The mounting groove is provided with a fixed clip and a movable clip. The fixed clip is provided on the first side of the mounting groove, and the movable clip is provided on the second side of the mounting groove. The first side and the second side of the mounting groove are arranged opposite to each other, and the fixed clip and the movable clip fix the conductive busbar in the mounting groove.
[0006] In an optional embodiment, the mounting groove is provided with a guide portion, the conductive bar is provided with a guide groove, and the guide portion penetrates into the guide groove.
[0007] In an optional embodiment, the guide portion is provided on the first side of the mounting groove.
[0008] In an optional embodiment, the symmetry center line of the guide groove and the symmetry center line of the conductive bar are staggered.
[0009] In an optional embodiment, there are at least two fixed buckles and at least two movable buckles.
[0010] In an optional embodiment, the spacing between the movable buckles is greater than the spacing between the fixed buckles.
[0011] In an optional embodiment, the installation groove is provided with an avoidance groove, and the movable buckle is movably arranged in the direction of the avoidance groove.
[0012] In an optional embodiment, the movable buckle is movably arranged in a direction away from the conductive bar.
[0013] In an optional embodiment, at least two supporting ribs are provided at the bottom of the mounting groove.
[0014] In an optional embodiment, the movable buckle is provided on the outer side of the support rib.
[0015] The battery pack integrated busbar provided by the utility model adopts an injection molded substrate as a structural component and a circuit board as a signal acquisition component. The injection molded substrate and the circuit board are fixed by hot riveting, and the injection molded substrate and the conductive busbar are fixed by snap fasteners. The assembly process is simple, the production efficiency is high, and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 A schematic diagram of a battery pack integrated busbar provided in an embodiment of the present utility model;
[0018] Figure 2 A schematic diagram of a conductive busbar in a battery pack integrated with a busbar according to an embodiment of the present invention;
[0019] Figure 3 This is one of the partial schematic diagrams of the injection-molded substrate in the battery pack integrated busbar provided by an embodiment of the present utility model;
[0020] Figure 4 This is a second partial schematic diagram of an injection-molded substrate in a battery pack integrated busbar according to an embodiment of the present invention;
[0021] Figure 5 A partial schematic diagram of the battery pack integrated busbar provided in an embodiment of the present utility model.
[0022] Icons: 100-injection molded substrate; 110-mounting slot; 111-fixed clip; 112-movable clip; 113-guide part; 114-avoidance slot; 115-support rib; 200-circuit board; 300-conductive bar; 310-guide slot. DETAILED DESCRIPTION
[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.
[0028] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0029] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.
[0030] like Figures 1 to 5 As shown, an embodiment of the present invention provides a battery pack integrated busbar, including an injection-molded substrate 100, a circuit board 200 and a conductive bar 300. The injection-molded substrate 100 and the circuit board 200 are fixed by hot riveting. The injection-molded substrate 100 is provided with a mounting groove 110, and the conductive bar 300 is connected to the mounting groove 110. The mounting groove 110 is provided with a fixed clip 111 and a movable clip 112. The fixed clip 111 is provided on a first side of the mounting groove 110, and the movable clip 112 is provided on a second side of the mounting groove 110. The first side and the second side of the mounting groove 110 are arranged opposite to each other, and the fixed clip 111 and the movable clip 112 fix the conductive bar 300 in the mounting groove 110.
[0031] When installing the conductive bar 300 into the mounting slot 110 , first align one side of the conductive bar 300 with the first side of the mounting slot 110 , snap the conductive bar 300 under the fixing buckle 111 , and then press the other side of the conductive bar 300 down. The movable buckle 112 can then secure the conductive bar 300 in the mounting slot 110 .
[0032] When the injection molded substrate 100 and the circuit board 200 are assembled, a plurality of heat rivet studs may be pre-formed on the injection molded substrate 100, and the circuit board 200 may be fixed to the injection molded substrate 100 using a heat rivet process. The heat rivet studs may be injection molded on the injection molded substrate 100.
[0033] like Figure 1 As shown, multiple conductive bars 300 are connected to the injection molded substrate 100, each of which is connected to multiple batteries or cells. The conductive bars 300 can be made of aluminum or copper. Aluminum bars are also called aluminum bars, while copper bars are also called copper bars.
[0034] The circuit board 200 is integrated with a signal acquisition component, which can acquire various signals from the conductive bus 300, including voltage signals, current signals, temperature signals, etc.
[0035] Both the movable buckle 112 and the fixed buckle 111 can be directly injection molded when the injection molding substrate 100 is manufactured.
[0036] The battery pack integrated busbar provided by the embodiment of the present invention adopts an injection-molded substrate 100 as a structural component and a circuit board 200 as a signal acquisition component. The injection-molded substrate 100 and the circuit board 200 are fixed by hot riveting, and the injection-molded substrate 100 and the conductive bus 300 are fixed by snap fastening. The assembly process is simple, the production efficiency is high, and the production cost is low.
[0037] Compared with the battery pack integrated busbar produced by hot pressing process in the prior art, the battery pack integrated busbar provided by the embodiment of the utility model does not require hot pressing during production, breaking the production bottleneck of long hot pressing time in the prior art, and does not require the configuration of hot pressing equipment and molds, which can greatly improve production efficiency and reduce labor costs and production costs.
[0038] The battery pack integrated busbar provided in the embodiment of the present utility model also facilitates maintenance of the integrated busbar in the event of a fault.
[0039] For example, if the signal acquisition component detects an overly high temperature, it can directly locate the corresponding conductive bar and temperature sensor. Using a removable clip, the corresponding conductive bar can be removed and the connected battery or cell, as well as the temperature sensor, can be inspected. Other normal components on the injection molded substrate do not need to be disassembled. After inspection, the conductive bar can be reinstalled into the mounting slot. The removable clip is not damaged during disassembly and assembly, and can be reused, reducing maintenance costs.
[0040] In an optional embodiment, the mounting groove 110 is provided with a guide portion 113 , the conductive bar 300 is provided with a guide groove 310 , and the guide portion 113 penetrates into the guide groove 310 .
[0041] The conductive bar 300 with the guide groove 310 is as follows: Figure 2 As shown, the mounting groove 110 with the guide portion 113 is as shown in FIG. Figure 4 As shown, the structure after installation is as follows Figure 5 shown.
[0042] The guide portion 113 cooperates with the guide slot 310 to complete the positioning of the conductive bar 300 and the installation slot 110 , making the installation position of the conductive bar 300 more accurate.
[0043] The size of the mounting slot 110 is generally designed to be larger than the size of the conductive bar 300. At this time, when the battery or battery cell deforms, the conductive bar 300 can move within the mounting slot 110 along with the deformation of the battery or battery cell, which can prevent damage to the battery or battery cell due to slight deformation. However, this may also cause the installation position of the conductive bar 300 and the mounting slot 110 to be inaccurate.
[0044] The addition of the guide portion 113 and the guide slot 310 can make the installation position of the conductive bar 300 more accurate and facilitate the connection between the conductive bar 300 and the circuit board 200. The guide portion 113 cooperates with the guide slot 310 to prevent the conductive bar 300 from being installed upside down.
[0045] Conductive bar 300 Figure 2As shown, except for the installation groove 110, it is basically symmetrical in shape, which is easy to be installed upside down. After the guide groove 310 is added, the guide groove 310 can play a guiding role to prevent the two sides of the conductive bar 300 from being installed upside down, which can prevent the conductive bar 300 from being installed upside down.
[0046] The guide portion 113 may be as follows Figure 4 The guide groove 310 is shown as a protruding rib, column, block, etc., and the guide groove 310 can be set to a corresponding shape.
[0047] In an optional embodiment, the guide portion 113 is disposed on a first side of the mounting slot 110. The guide portion 113 is disposed on the first side of the mounting slot 110 so that the guide portion 113 and the fixing buckle 111 are located on the same side of the mounting slot 110. When one side of the conductive bar 300 is aligned with the first side of the mounting slot 110 and the conductive bar 300 is snapped under the fixing buckle 111, the guide portion 113 cooperates with the guide slot 310 to complete the positioning of the conductive bar 300.
[0048] In an optional embodiment, the symmetry center line of the guide groove 310 and the symmetry center line of the conductive bar 300 are staggered.
[0049] The symmetrical center line of the guide groove 310 and the symmetrical center line of the conductive bar 300 are staggered to achieve an eccentric setting effect, which can prevent mistakes when assembling the conductive bar 300 and the mounting groove 110.
[0050] Conductive bar 300 Figure 2 As shown, except for the guide groove 310, the conductive bar 300 is basically symmetrical in shape. When the symmetry center line of the guide groove 310 is the same as the symmetry center line of the conductive bar 300, the conductive bar 300 is easily installed upside down. The conductive bar 300 is provided with a convex rib structure, which can play a protective role when the battery or battery cell is deformed. If the conductive bar 300 is installed upside down with the rib structure facing downward, the rib structure will not play a protective role.
[0051] If the symmetric centerlines of the guide slots 310 and the conductive bar 300 are offset, if the conductive bar 300 is installed upside down in the mounting slot 110, the guide slots 310 and the guide portions 113 will not align, and the conductive bar 300 will not be properly installed. Therefore, offsetting the symmetric centerlines of the guide slots 310 and the conductive bar 300 can prevent the conductive bar 300 from being installed upside down.
[0052] In an optional embodiment, there are at least two fixed buckles 111 and at least two movable buckles 112.
[0053] like Figure 3 、 Figure 4 and Figure 5 As shown, two fixed buckles 111 are provided on the first side of the mounting slot 110, and two movable buckles 112 are provided on the second side of the mounting slot 110, so that both sides of the conductive bar 300 have force-engaging positions in the length direction, the force distribution is more uniform, and the fixing effect is better.
[0054] In an optional embodiment, the spacing between the movable buckles 112 is greater than the spacing between the fixed buckles 111 .
[0055] like Figure 3 、 Figure 4 and Figure 5 As shown, the distance between the two movable buckles 112 is greater than the distance between the two fixed buckles 111, and the distribution of the two movable buckles 112 is more dispersed. The movable buckles 112 are easier to move, easier to buckle when the conductive bar 300 is installed in the installation slot 110, and easier to remove the conductive bar 300 by prying open the movable buckles 112.
[0056] In an optional embodiment, the installation slot 110 is provided with an avoidance slot 114, and the movable buckle 112 is movable toward the avoidance slot 114. Figure 3 、 Figure 4 and Figure 5 As shown, the installation slot 110 is further provided with an avoidance slot 114 . The avoidance slot 114 is provided on three sides of the movable buckle 112 to facilitate the movement of the movable buckle 112 .
[0057] In an optional embodiment, the movable buckle 112 is movably disposed in a direction away from the conductive bar 300 .
[0058] like Figure 4 and Figure 5 As shown, when the conductive bar 300 is installed, the side of the conductive bar 300 opposite to the movable buckle 112 will push the movable buckle 112 away from the conductive bar 300 during the process of pressing the conductive bar 300 downward. Subsequently, the movable buckle 112 returns to its original position under the action of its own elasticity, fixing the conductive bar 300 in the installation slot 110.
[0059] In an optional embodiment, at least two supporting ribs 115 are provided at the bottom of the mounting groove 110. Figure 3 and Figure 4 As shown, the bottom of the mounting groove 110 may be provided with a hollow area, which can reduce the material and weight of the injection molded substrate 100. At the bottom of the mounting groove 110, outside the hollow area, support ribs 115 are used to support the conductive bar 300 from the bottom. Figure 4 As shown, three support ribs 115 are provided, and the left and right support ribs 115 can be symmetrically arranged relative to the middle support rib 115 .
[0060] In an optional embodiment, the movable buckle 112 is provided on the outside of the support rib 115. Figure 3 and Figure 4 As shown, the two movable buckles 112 are both located on the outside of the support rib 115. When removing the conductive bar 300 from the inside of the mounting slot 110, the two movable buckles 112 are farther apart and easier to move. The movable buckles 112 are located on the outside of the support rib 115, and the conductive bar 300 is also easier to move.
[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A battery pack integrated busbar, characterized in that: The invention comprises an injection molding substrate (100), a circuit board (200) and a conductive bar (300), wherein the injection molding substrate (100) and the circuit board (200) are fixed by heat riveting, the injection molding substrate (100) is provided with a mounting groove (110), the conductive bar (300) is connected to the mounting groove (110), the mounting groove (110) is provided with a fixed buckle (111) and a movable buckle (112), the fixed buckle (111) is provided on a first side of the mounting groove (110), the movable buckle (112) is provided on a second side of the mounting groove (110), the first side and the second side of the mounting groove (110) are arranged opposite to each other, and the fixed buckle (111) and the movable buckle (112) fix the conductive bar (300) in the mounting groove (110).
2. The battery pack integrated busbar according to claim 1, characterized in that: The installation groove (110) is provided with a guide portion (113), the conductive bar (300) is provided with a guide groove (310), and the guide portion (113) penetrates into the guide groove (310).
3. The battery pack integrated busbar according to claim 2, characterized in that: The guide portion (113) is provided on a first side of the installation groove (110).
4. The battery pack integrated busbar according to claim 2, characterized in that: The symmetric center line of the guide groove (310) and the symmetric center line of the conductive bar (300) are staggered.
5. The battery pack integrated busbar according to claim 1, characterized in that: At least two fixed buckles (111) are provided, and at least two movable buckles (112) are provided.
6. The battery pack integrated busbar according to claim 5, characterized in that: The spacing between the movable buckles (112) is greater than the spacing between the fixed buckles (111).
7. The battery pack integrated busbar according to claim 1, characterized in that: The installation groove (110) is provided with an avoidance groove (114), and the movable buckle (112) is movably arranged in the direction of the avoidance groove (114).
8. The battery pack integrated busbar according to claim 7, characterized in that: The movable buckle (112) is movably arranged in a direction away from the conductive bar (300).
9. The battery pack integrated busbar according to claim 1, characterized in that: At least two supporting ribs (115) are provided at the bottom of the installation groove (110).
10. The battery pack integrated busbar according to claim 9, characterized in that: The movable buckle (112) is arranged on the outer side of the supporting rib (115).