Novel CTP integrated busbar

Abstract

The utility model discloses a novel CTP integrated busbar, include: the isolation board, a plurality of series bar sheet, positive bar sheet, negative bar sheet and collection wire harness, a plurality of series bar sheet one end and its one electric core positive pole connection, the other end and another electric core negative pole connection make a plurality of electric core series connection into electric core group, and positive bar sheet is connected with the positive pole of electric core group, and negative bar sheet is connected with the negative pole of electric core group, and collection wire harness is horizontally arranged in a plurality of wire harness grooves respectively, and one and positioning plug -in and be used for temperature measurement and electric signal's collection assembly are arranged on positive bar sheet, negative bar sheet and every series bar sheet respectively, and a plurality of collection wire harness one end and every collection assembly one -to -one electric connection, and the other end and BMU collection board electric connection. Adopt above -mentioned technical scheme, will not cause the phenomenon that collection wire harness happens to pull and break, can greatly reduce the failure rate of CTP integrated busbar, and simultaneously with the subsequent adoption of automatic welding equipment and welding production again, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery-related technology, and in particular to a novel CTP integrated busbar. Background Technology

[0002] Existing integrated busbars generally include isolation plates on top of several battery cells, several series-connected terminals on top of the isolation plates, and a data acquisition harness. The series-connected terminals are connected to the positive and negative terminals of the battery cells, connecting them in series. The data acquisition harness is typically arranged along the width of the battery cell (as disclosed in patents CN119315225A and CN223401692U). Temperature sensors are electrically connected to the ends of the data acquisition harness, and these sensors are mounted on sampling terminals, which are soldered to the series-connected terminals to measure the battery cell temperature. Because the expansion distance of a battery cell along its width is much greater than its expansion distance along its length after heating, arranging the data acquisition harness along the width of the battery cell increases the risk of breakage due to tension. Furthermore, the lack of a positioning structure between the sampling terminals and the series-connected terminals means that vibrations during equipment operation can cause the sampling terminals to shift, making automated welding of the terminals impossible. Manual welding with a welding torch is typically used, resulting in low production efficiency. Utility Model Content

[0003] In order to overcome the existing technical defects, the purpose of this utility model is to provide a new type of CTP integrated busbar to solve the above-mentioned technical problems.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] According to one aspect of this utility model, a novel CTP integrated busbar is designed, comprising: an isolation plate disposed on top of several battery cells, several series-connected terminals, a positive terminal terminal, a negative terminal terminal, and a data acquisition harness disposed on top of the isolation plate. The several battery cells are arranged laterally along their length direction and longitudinally along their width direction. One end of each series-connected terminal terminal is connected to the positive terminal of one of the battery cells, and the other end is connected to the negative terminal of another battery cell, so that the several battery cells are connected in series to form a battery cell group. The positive terminal terminal is connected to the positive terminal of the battery cell group, and the negative terminal terminal is connected to the negative terminal of the battery cell group. Several wire harness slots are laterally disposed on the top of the isolation plate, and several data acquisition harnesses are respectively arranged laterally in the several wire harness slots. A data acquisition component is disposed on each of the positive terminal terminal, the negative terminal terminal, and each series-connected terminal terminal for positioning and insertion and for use in temperature measurement and electrical signal acquisition. One end of each data acquisition harness is electrically connected to each data acquisition component in a one-to-one correspondence, and the other end is directly plugged into and electrically connected to the BMU data acquisition board.

[0006] By adopting the above technical solution, the wire harness groove is set as a horizontal structure consistent with the length direction of the battery cell. The acquisition wire harness is placed horizontally in the wire harness groove. When the battery cell heats up and expands, the expansion in the length direction is small, which will not cause the risk of the acquisition wire harness being pulled and broken, thereby greatly reducing the failure rate of the integrated busbar. The acquisition component is positioned and plugged into the positive electrode plate, negative electrode plate, and series plate respectively, which can realize the positioning of the acquisition component, so that the two can be welded together by automated welding equipment in the future, thereby improving production efficiency.

[0007] To better address the aforementioned technical deficiencies, this utility model also offers a superior technical solution:

[0008] In some implementations, the acquisition component includes:

[0009] The circuit board is provided with a conductive part, a first power receiving part, a second power receiving part and a third power receiving part. The first power receiving part, the second power receiving part and the third power receiving part are respectively electrically connected to the acquisition wire harness. The conductive part and the third power receiving part are electrically connected through a first fuse.

[0010] The temperature sensor has two pins that are soldered to the first lead portion on the rear side of the first power-on portion and the second lead portion on the rear side of the second power-on portion, respectively.

[0011] The connector is a heat-conducting and conductive component. Its front end is welded to the conductive part, and the front end has a bent part located on one side of the temperature sensor. The temperature sensor is surrounded by thermally conductive adhesive that contacts the bent part. The rear end of the connector is provided with a positioning insertion part. Several acquisition components are respectively inserted into the positioning insertion holes on the positive electrode plate, the positioning insertion holes on the negative electrode plate, and the positioning insertion holes on each series plate through the positioning insertion part.

[0012] The connector is similar to a sampling terminal. The positioning insertion part on the connector is inserted into the corresponding insertion holes on the positive electrode, negative electrode, and each series electrode. When welding on the equipment, this prevents the connector from shifting due to vibrations during operation, allowing for automated welding and improved production efficiency. The connector is a heat- and electrical conductive component. When the integrated busbar is charged and discharged, the heat generated is conducted through the positive, negative, and series electrodes to the connector. The connector radiates heat to the temperature sensor via thermally conductive adhesive. The temperature sensor monitors temperature changes and feeds them back to the BMU acquisition board. The third electrical connection is electrically connected to the BMU acquisition board via a data acquisition harness. The electrical signals (voltage and current) on the positive, negative, and series electrodes are transmitted to the BMU acquisition board through the connector, conductive part, first fuse, and third electrical connection, enabling monitoring of electrical signals (voltage and current) and overcurrent protection, better meeting user needs. Excessive sampling or equalization current can cause the first fuse to blow, preventing damage to the BMU acquisition board and CTP integrated busbar, thus providing overcurrent protection.

[0013] In some embodiments, the top of the separator plate is provided with a first positioning groove, a second positioning groove and a plurality of third positioning grooves. The positive electrode bar is placed in the first positioning groove and its positioning hole cooperates with the first positioning post in the first positioning groove. The negative electrode bar is placed in the second positioning groove and its positioning hole cooperates with the second positioning post in the second positioning groove. The plurality of series-connected bars are respectively placed in the plurality of the third positioning grooves and their positioning holes cooperate with the third positioning post of the third positioning groove.

[0014] In some embodiments, the tandem bar has an arched portion in the middle and recessed grooves at both ends.

[0015] In some embodiments, a notch penetrating the circuit board is provided between the first and second electrical contacts. Since the first and second electrical contacts are close together, the accumulation of moisture between them may cause them to conduct, leading to inaccurate temperature measurement. By providing the notch, moisture accumulation between them can be prevented, thus playing a certain role in preventing conduction.

[0016] In some embodiments, the connector has two bends at its front end, which are positioned on the left and right sides of the temperature sensor, respectively. An insulating material layer is provided between the front end of the connector and the first fuse. The two bends can effectively transmit radiant heat, enabling rapid temperature measurement.

[0017] In some embodiments, the connector has through holes corresponding to the top and bottom of the conductive part. These through holes allow observation of whether there are gaps between the bottom of the connector and the conductive part, thus determining the quality of the weld and allowing for the rejection of defective products.

[0018] In some embodiments, the conductive part is connected to a second fuse, the tip of which is located behind the third contact part and maintained at a gap. When the first fuse blows, by welding the tip of the second fuse to the third contact part, monitoring of electrical signals (voltage, current) and overcurrent protection can be achieved. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a novel CTP integrated busbar according to one embodiment of this utility model;

[0020] Figure 2 This is an exploded structural diagram of the novel CTP integrated busbar.

[0021] Figure 3 This is a schematic diagram of the structure of tandem barium granules;

[0022] Figure 4 This is a schematic diagram of the acquisition component.

[0023] Figure 5 This is a schematic diagram of the right-side structure of the acquisition component;

[0024] Figure 6 This is a schematic diagram of the circuit board structure on the acquisition component;

[0025] Figure label:

[0026] 1. Battery cell; 2. Isolation plate; 20. Wiring harness groove; 21. First positioning groove; 22. Second positioning groove; 23. Third positioning groove; 24. Leakage through hole; 3. Series electrode plate; 31. Arched part; 32. Recessed groove; 33. Positioning insertion hole; 4. Positive electrode plate; 5. Negative electrode plate; 6. Data acquisition harness; 7. Data acquisition assembly; 71. Circuit board; 711. Conductive part; 712. First power connection part; 713. Second power connection part; 714. Third power connection part; 715. First fuse; 716. Notch; 717. Second fuse; 72. Temperature sensor; 73. Connector; 731. Bending part; 732. Positioning insertion part; 733. Through hole; 8. BMU data acquisition board. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, and fixing should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] refer to Figures 1 to 6 As shown, this utility model provides a novel CTP integrated busbar, comprising: an isolation plate 2 disposed on top of several battery cells 1, several series-connected terminals 3 disposed on top of the isolation plate 2, a positive terminal terminal 4, a negative terminal terminal 5, and a data acquisition harness 6. The several battery cells 1 are arranged laterally along their length direction and longitudinally along their width direction. One end of each series-connected terminal 3 is connected to the positive terminal of one battery cell 1, and the other end is connected to the negative terminal of another battery cell 1, so that the several battery cells 1 are connected in series to form a battery cell group. The positive terminal terminal 4 is connected to the positive terminal of the battery cell group, and the negative terminal terminal 5 is connected to the negative terminal of the battery cell group. Several wire harness slots 20 are arranged laterally on the top of the isolation plate 2. Several data acquisition harnesses 6 are arranged laterally in the multiple wire harness slots 20. A data acquisition component 7 is disposed on the positive terminal terminal 4, the negative terminal terminal 5, and each series-connected terminal 3, and is positioned and plugged into it for temperature measurement and electrical signal acquisition. One end of each data acquisition harness 6 is electrically connected to each data acquisition component 7 in a one-to-one correspondence, and the other end is electrically connected to the BMU data acquisition board 8. The acquisition harness 6 includes, but is not limited to, FPC / FFC / FDC / harness.

[0031] The top of the isolation plate 2 is provided with a first positioning groove 21, a second positioning groove 22, and several third positioning grooves 23. The positive electrode plate 4 is placed in the first positioning groove 21, and its two positioning holes cooperate with the two first positioning posts in the first positioning groove 21. The bottom of the first positioning groove 21 is provided with a first through hole for welding the positive electrode plate 4 to the positive electrode of the battery cell 1 below it. The negative electrode plate 5 is placed in the second positioning groove 22, and its two positioning holes cooperate with the two second positioning posts in the second positioning groove 22. The bottom of the second positioning groove 22 is provided with a first through hole for welding the negative electrode plate 4 to the positive electrode of the battery cell 1 below it. The electrode plate 5 is welded to the negative electrode of the battery cell 1 below it through a second through hole; several series-connected electrodes 3 are placed in several third positioning grooves 23 respectively, and the two positioning holes on them cooperate with the two third positioning posts in the third positioning grooves 23. The bottom of the third positioning grooves 23 is provided with two third through holes. One third through hole corresponds to the positive electrode of the battery cell 1 below it, and the other third through hole corresponds to the negative electrode of another battery cell 1, so that one end of the series-connected electrode plate 3 contacts the positive electrode of one battery cell 1 for welding, and the other end of the series-connected electrode plate 3 contacts the negative electrode of another battery cell 1 for welding.

[0032] The isolation plate 2 is provided with a number of leakage through holes 24, and the number of leakage through holes 24 corresponds one-to-one with the explosion-proof valves on the number of battery cells 1.

[0033] The tandem plate 3 has an arched part 31 in the middle and recessed grooves 32 at the top of both ends.

[0034] The data acquisition component 7 includes: a circuit board 71, a temperature sensor 72, and a connector 73.

[0035] The circuit board 71 is provided with a conductive part 711, a first power-connecting part 712, a second power-connecting part 713, and a third power-connecting part 714. The conductive part 711, the first power-connecting part 712, the second power-connecting part 713, and the third power-connecting part 714 are all copper sheet structures. The first power-connecting part 712, the second power-connecting part 713, and the third power-connecting part 714 are electrically connected to the acquisition wire harness 6 respectively. The conductive part 711 is right-angled. The conductive part 711 and the third power-connecting part 714 are electrically connected through a first fuse 715. The first fuse 715 is a narrow copper sheet, aluminum sheet, or a thin copper wire, aluminum wire, etc., and has a serpentine structure or a patch structure. In this embodiment, the first fuse 715 is preferably a narrow serpentine copper sheet.

[0036] The two pins on the temperature sensor 72 are soldered to the first lead portion on the rear side of the first power contact portion 712 and the second lead portion on the rear side of the second power contact portion 713.

[0037] The connector 73 is a heat-conducting and conductive component. Specifically, the connector 73 is made of copper, aluminum, silver, gold, tin, etc. The front end of the connector 73 is welded to the conductive part 711, and the front end has a bent part 731 located on one side of the temperature sensor 72. There are one or two bent parts 731. In this embodiment, two bent parts 731 are preferably provided. The two bent parts 731 are respectively located on the left and right sides of the temperature sensor 72. The bent parts 731 are right-angled or arc-shaped structures when viewed from the front. In this embodiment, the bent parts 731 are preferably right-angled structures when viewed from the front.

[0038] An insulating material layer is provided between the front end of the connector 73 and the first fuse 712.

[0039] The temperature sensor 72 is provided with thermally conductive adhesive that wraps around it and contacts the two bends 731.

[0040] The connector 73 has a positioning insertion part 732 at its rear end. The positioning insertion part 732 has a U-shaped structure. Several acquisition components 7 are respectively inserted into the positioning insertion holes on the positive electrode plate 4, the negative electrode plate 5, and the positioning insertion holes 33 on each series plate 3 through the positioning insertion part 732.

[0041] A notch 716 is provided between the first power receiving part 712 and the second power receiving part 713, penetrating the circuit board 71.

[0042] The connector 73 is provided with through holes 733 that correspond to the upper and lower parts of the conductive part 711.

[0043] The conductive part 711 is connected to a second fuse 717, the front end of which is located behind the third contact part 714 and maintains a gap therebetween. The second fuse 717 is a narrow copper sheet, aluminum sheet, or thin copper wire, aluminum wire, etc., and has a serpentine structure or a patch structure. In this embodiment, the second fuse 717 is preferably a narrow serpentine copper sheet.

[0044] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A novel CTP integrated busbar, characterized in that, include: The system includes an isolation plate on top of several battery cells, several series-connected electrodes, a positive electrode electrode, a negative electrode electrode, and a data acquisition harness on top of the isolation plate. The battery cells are arranged laterally along their length and longitudinally along their width. One end of each series-connected electrode is connected to the positive terminal of one battery cell, and the other end is connected to the negative terminal of another battery cell, thus connecting the battery cells in series to form a battery cell group. The positive electrode electrode is connected to the positive terminal of the battery cell group, and the negative electrode electrode is connected to the negative terminal of the battery cell group. Several wire harness slots are arranged laterally on the top of the isolation plate, and several data acquisition harnesses are arranged laterally in the several wire harness slots. Each positive electrode electrode, each negative electrode electrode, and each series-connected electrode is provided with a data acquisition component that is positioned and plugged into it for temperature measurement and electrical signal acquisition. One end of each data acquisition harness is electrically connected to each data acquisition component, and the other end is directly plugged into the BMU data acquisition board.

2. The novel CTP integrated busbar according to claim 1, characterized in that, The acquisition component includes: The circuit board is provided with a conductive part, a first power receiving part, a second power receiving part and a third power receiving part. The first power receiving part, the second power receiving part and the third power receiving part are respectively electrically connected to the acquisition wire harness. The conductive part and the third power receiving part are electrically connected through a first fuse. The temperature sensor has two pins that are soldered to the first lead portion on the rear side of the first power-on portion and the second lead portion on the rear side of the second power-on portion, respectively. The connector is a heat-conducting and conductive component. Its front end is welded to the conductive part, and the front end has a bent part located on one side of the temperature sensor. The temperature sensor is surrounded by thermally conductive adhesive that contacts the bent part. The rear end of the connector is provided with a positioning insertion part. Several acquisition components are respectively inserted into the positioning insertion holes on the positive electrode plate, the positioning insertion holes on the negative electrode plate, and the positioning insertion holes on each series plate through the positioning insertion part.

3. A novel CTP integrated busbar according to claim 1 or 2, characterized in that, The top of the separator plate is provided with a first positioning groove, a second positioning groove and a plurality of third positioning grooves. The positive electrode bar is placed in the first positioning groove and its positioning hole cooperates with the first positioning post in the first positioning groove. The negative electrode bar is placed in the second positioning groove and its positioning hole cooperates with the second positioning post in the second positioning groove. The plurality of series-connected bars are respectively placed in the plurality of the third positioning grooves and their positioning holes cooperate with the third positioning post of the third positioning groove.

4. A novel CTP integrated busbar according to claim 1, characterized in that, The tandem bar has an arched section in the middle and recessed grooves at both ends.

5. A novel CTP integrated busbar according to claim 2, characterized in that, A notch penetrating the circuit board is provided between the first power receiving part and the second power receiving part.

6. A novel CTP integrated busbar according to claim 2, characterized in that, The connector has two bends at its front end, which are located on the left and right sides of the temperature sensor, respectively. An insulating material layer is provided between the front end of the connector and the first fuse.

7. A novel CTP integrated busbar according to claim 2, characterized in that, The connector is provided with through holes that correspond to the upper and lower parts of the conductive part.

8. A novel CTP integrated busbar according to claim 2, characterized in that, The conductive part is connected to a second fuse, and the front end of the second fuse is located behind the third electrical contact part and maintains a gap with it.

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