Conductive busbar, battery assembly and vehicle

Abstract

The utility model relates to the technical field of vehicles, and discloses a conductive busbar, a battery assembly and a vehicle, the conductive busbar is characterized in that the outer surface of an electric connection part is covered with an electrophoresis insulation layer, and the electrophoresis insulation layer formed by electrophoresis has very strong voltage breakdown resistance so as to ensure that the conductive busbar has good insulation performance; short circuit caused by contact between the conductive busbar and a surrounding structure is avoided; the structure of the conductive body has no special requirement, and even the conductive body with a complex structure can form a uniform electrophoresis insulation layer on the surface of the electric connection part; compared with an insulating layer in the prior art, the electrophoresis insulating layer is thinner under the same voltage-withstanding condition, so that the thickness of the conductive busbar is reduced, and the weight of the conductive busbar is reduced; the forming process of the electrophoresis insulating layer is simple, and the processing cost of the conductive busbar can be reduced. No gap exists between the electrophoresis insulation layer and the electric connection part, the electric connection part can be completely separated from external air, and the electric connection part is effectively prevented from being corroded due to contact with water vapor.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially relates to a conductive busbar, battery assembly and vehicle. BACKGROUND

[0002] The battery comprises a plurality of battery cells, and the plurality of battery cells are connected through the conductive busbar to realize current transmission and signal acquisition. The conductive busbar comprises a conductive body and an insulating layer covering the conductive body.

[0003] First, the insulating layer is a heat shrinkable sleeve covering the conductive body. The thickness of the heat shrinkable sleeve is large, which increases the weight and space occupation of the conductive busbar.

[0004] Second, the conductive body is heated to about 250 DEG C and then immersed in the insulating epoxy resin powder. The hard insulating layer formed on the outer surface of the conductive body has a complex forming process, high cost, and large thickness.

[0005] Third, the insulating layer is formed on the conductive body by extrusion or injection molding process. The material used for extrusion is usually PVC, and the material used for injection molding is usually epoxy resin. Since PVC and epoxy resin are not resistant to acid and alkali solutions, the conductive body needs to be electroplated as a whole before being insulated, which leads to a complex processing process of the insulating layer, large thickness of the insulating layer, and high cost. SUMMARY

[0006] One of the purposes of the utility model is to provide a conductive busbar. The weight of the conductive busbar is light under the same voltage requirement. The complexity of the structure of the conductive body has little effect on the formation of the insulating layer. The processing cost of the conductive busbar is low.

[0007] The second purpose of the utility model is to provide a battery assembly. The weight of the battery assembly is reduced. The processing cost of the battery assembly is reduced. The processing efficiency of the battery assembly is improved.

[0008] The third purpose of the utility model is to provide a vehicle. The weight of the vehicle is reduced. The cost of the vehicle is reduced.

[0009] To achieve the above purposes, in the first aspect, the utility model provides a conductive busbar, comprising:

[0010] The conductive body comprises two connection ends and an electric connection part connecting the two connection ends. One of the connection ends is used to electrically connect the battery cell. The other connection end is used to electrically connect the battery cell or the external circuit.

[0011] An electrophoretic insulating layer covers the outer surface of the electrical connection part.

[0012] As an implementable technical solution of the above-mentioned conductive busbar, the thickness of the electrophoretic insulating layer is 0.03mm-0.1mm.

[0013] As an implementable technical solution of the above-mentioned conductive busbar, the surface of the connection end at least contacting the electric core or the external circuit is plated with an anticorrosive conductive layer.

[0014] As an implementable technical solution of the above-mentioned conductive busbar, the anticorrosive conductive layer is a zinc plating layer or a tin plating layer.

[0015] As an implementable technical solution of the above-mentioned conductive busbar, the outer surface of the connection end at least contacting the electric core or the external circuit is covered with a removable pre-plating shielding layer, and the outer surface of the pre-plating shielding layer is limited to form an electrophoretic insulating layer.

[0016] As an implementable technical solution of the above-mentioned conductive busbar, the conductive busbar is a bending structure formed with a avoiding space.

[0017] As an implementable technical solution of the above-mentioned conductive busbar, the electrical connection part comprises a first connection part, a second connection part and a third connection part connected in sequence, the first connection part and the third connection part are located on the opposite sides of the thickness direction of the second connection part, and one end of the first connection part away from the second connection part is connected to one of the connection ends, and one end of the third connection part away from the second connection part is connected to the other connection end.

[0018] As an implementable technical solution of the above-mentioned conductive busbar, the connection end is provided with a connection hole penetrating through along the thickness direction thereof.

[0019] In a second aspect, the utility model provides a battery assembly, comprising a plurality of electric cores and the conductive busbar of any implementable scheme.

[0020] The plurality of electric cores are connected in series and / or in parallel through the conductive busbar.

[0021] In addition, the plurality of electric cores comprise an external electric core, the external electric core is electrically connected with the conductive busbar, and the conductive busbar is used for electrically connecting an external circuit.

[0022] In a third aspect, the utility model provides a vehicle comprising the battery assembly.

[0023] The utility model has at least the following beneficial effects:

[0024] The conductive busbar provided by the utility model has the advantages that the electrophoretic insulating layer is formed on the outer surface of the electric connection part through electrophoresis, the electrophoretic insulating layer formed by electrophoresis has very strong voltage breakdown resistance, so that the conductive busbar has good insulating performance, and short circuit caused by contact between the conductive busbar and surrounding structures is avoided; the structure of the conductive body has no special requirements, and the conductive body with a complex structure can also form a uniform electrophoretic insulating layer on the surface of the electric connection part; compared with the insulating layer in the prior art, the electrophoretic insulating layer formed through the electrophoresis process is thinner and has more uniform thickness under the same voltage resistance condition, which is favorable for reducing the thickness and weight of the conductive busbar; the forming process of the electrophoretic insulating layer is simple, and the processing cost of the conductive busbar is reduced.

[0025] The battery assembly provided by the utility model has the advantages that the conductive busbar is used, the battery assembly is light in weight, the cost of the battery assembly is reduced, and the processing efficiency of the battery assembly is improved.

[0026] The vehicle provided by the utility model has the advantages that the battery assembly is used, the weight of the vehicle is reduced, and the cost of the vehicle is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by the person skilled in the art according to the contents of the embodiments of the utility model and the drawings without any creative labor.

[0028] Figure 1 The structural schematic diagram of the conductive busbar provided by the embodiments of the utility model is shown in the figure;

[0029] Figure 2 is Figure 1 the stepped sectional view of A-A direction in the figure;

[0030] Figure 3 The structural schematic diagram of the conductive body provided by the embodiments of the utility model is shown in the figure;

[0031] Figure 4 The structural schematic diagram of the conductive body provided by the embodiments of the utility model is shown in the figure;

[0032] Figure 5It is the structural schematic view of the conductive body in the electrophoresis process provided by the embodiment of the utility model and provided with the shielding layer before plating.

[0033] Figure 6 It is the structural schematic view of the conductive body after the electrophoresis and provided with the shielding layer before plating is removed.

[0034] In the drawing,

[0035] 1, conductive body; 11, electric connection part; 111, first connection part; 112, second connection part; 113, third connection part; 12, connection end;

[0036] 2, electrophoresis insulating layer; 3, anticorrosion conductive layer; 4, shielding layer before plating;

[0037] 100, connecting hole. Specific implementation

[0038] The utility model will be further explained in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawing and not all structures.

[0039] In the description of the utility model, unless there is explicit definition and limitation, the terms "link", "connection", "fix" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In the utility model, unless there is explicit definition and limitation, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] In the description of the embodiments, the terms "upper", "lower", "right", "left", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] The embodiment of the utility model provides a kind of electrically conductive busbar and battery assembly, wherein, battery assembly includes multiple electric core, and electrically conductive busbar, at least two electric core is connected by electrically conductive busbar, multiple electric core includes outer electric core, outer electric core is connected with electrically conductive busbar, which is used to electrically connect external circuit.The need to be explained is, outer electric core refers to the electric core of battery assembly electrically connected external circuit, one battery assembly includes two outer electric cores, wherein the positive pole of one outer electric core is electrically connected to external circuit by electrically conductive busbar, and the negative pole of another outer electric core is electrically connected to external circuit by electrically conductive busbar.

[0043] For a battery assembly, the number of electric core can be set according to actual demand, multiple electric core is connected in series and / or in parallel to form a battery assembly, exemplarily, multiple electric core is divided into multiple groups, each group includes multiple electric core, multiple electric core is connected in series to form an electric core unit, and multiple electric core unit is connected in parallel to form a battery assembly.Each electric core unit is connected in series by one electrically conductive busbar, and adjacent two electric core units are connected in parallel by electrically conductive busbar. Specifically, the positive pole of one of the two adjacent electric cores is electrically connected to one end of the electrically conductive busbar, and the negative pole of the other electric core is electrically connected to the other end of the electrically conductive busbar, to realize the series connection of the two electric cores. The positive poles of the two adjacent electric core units are electrically connected by one electrically conductive busbar, and the negative poles of the two adjacent electrically conductive busbars are electrically connected by one electrically conductive busbar, to realize the parallel connection of the two electric core units. The positive pole of the battery assembly is electrically connected to the external circuit by one electrically conductive busbar, and the negative pole of the battery assembly is electrically connected to the external circuit by one electrically conductive busbar.

[0044] It should be noted that the pole of the electric core is electrically connected to the electrically conductive busbar to electrically connect the electric core and the electrically conductive busbar. In other embodiments, the battery assembly can also be formed by connecting multiple electric cores in series, and the battery assembly can also be formed by connecting multiple electric cores in parallel, which will not be specifically illustrated here.

[0045] As Figures 1 to 3 shown, the electrically conductive busbar provided by the utility model includes an electrically conductive body 1 and an insulating layer, wherein the electrically conductive body 1 includes two connecting ends 12 and an electric connecting part 11 connecting the two connecting ends 12, one of the two connecting ends 12 is used for connecting the electric core to the electric core, and the other connecting end 12 is used for connecting the electric core to the electric core or the external circuit, and the outer surface of the electric connecting part 11 is covered with an insulating layer.

[0046] For the conductive busbar connecting two battery cells in series or parallel, the two connecting ends 12 of the conductive busbar are electrically connected to the two battery cells respectively; for the conductive busbar electrically connecting the battery assembly to an external circuit, one connecting end 12 of the conductive busbar is used to electrically connect to an external battery cell, and the other connecting end 12 is used to electrically connect to the external circuit.

[0047] The conductive busbar can prevent short circuit caused by contact between the conductive busbar and surrounding structures by covering the outer surface of the electrical connection part 11 with an insulating layer.

[0048] The current insulating layer has the following types:

[0049] 1. The insulating layer is a heat shrinkable sleeve covering the conductive body. For a conductive busbar with a complex structure, it is difficult to cover the heat shrinkable sleeve on the conductive body. Moreover, the thickness of the heat shrinkable sleeve is large, which increases the weight and space occupation of the conductive busbar.

[0050] 2. The conductive body is heated to about 250 DEG C and then immersed in an insulating epoxy resin powder to make the epoxy resin powder adhere to the surface of the conductive body. Then the hard insulating layer is formed on the outer surface of the conductive body by heating and curing. The forming process of the hard insulating layer is complex and the cost is high. Moreover, the thickness of the insulating layer is large.

[0051] 3. The insulating layer is formed on the conductive body by extrusion process or injection molding process. The material used for extrusion is usually PVC, and the material used for injection molding is usually epoxy resin. Since PVC and epoxy resin are not resistant to acid and alkali solution, the conductive body needs to be entirely electroplated and then insulated, which leads to a complex processing process of the insulating layer and a large thickness and high cost of the insulating layer.

[0052] Therefore, the conductive busbar of the embodiment of the present application covers the electrophoretic insulating layer 2 on the outer surface of the electrical connection part 11.

[0053] The conductive busbar covers the electrophoretic insulating layer 2 on the outer surface of the electrical connection part 11. The electrophoretic insulating layer 2 formed by electrophoresis has a strong voltage breakdown resistance to ensure that the conductive busbar has good insulation performance and avoid short circuit caused by contact between the conductive busbar and surrounding structures. The structure of the conductive body 1 has no special requirements. Even if the conductive body 1 has a complex structure, a uniform electrophoretic insulating layer 2 can be formed on the surface of the electrical connection part 11. Compared with the insulating layer in the prior art, under the same voltage resistance condition, the electrophoretic insulating layer 2 formed by the electrophoresis process is thinner and has a more uniform thickness, which is conducive to reducing the thickness and weight of the conductive busbar. The forming process of the electrophoretic insulating layer 2 is simple, which is conducive to reducing the processing cost of the conductive busbar.

[0054] In addition, the electrophoretic insulating layer 2 is directly formed on the outer surface of the electrical connection part 11, the connection between the electrophoretic insulating layer 2 and the electrical connection part 11 is firm without any gap, the electrical connection part 11 and the external air can be completely separated through the electrophoretic insulating layer 2, the corrosion of the electrical connection part 11 caused by the contact with water vapor can be effectively avoided, and there is no need to set an anti-corrosion layer between the outer surface of the electrical connection part 11 and the electrophoretic insulating layer 2, which is conducive to reducing the weight of the conductive busbar.

[0055] In some embodiments, the thickness of the electrophoretic insulating layer 2 is 0.03mm-0.1mm. It should be noted that the thickness of the electrophoretic insulating layer 2 can be any value between 0.03mm and 0.1mm, for example, the thickness of the electrophoretic insulating layer 2 can be any value selected from 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm and 0.1mm.

[0056] The thickness of the insulating layer formed by the prior art is usually 0.6mm-1.5mm, while the thickness of the electrophoretic insulating layer 2 is 0.03mm-0.1mm, the thickness of the electrophoretic insulating layer 2 is thinner, the consumption of materials is less, the cost is low, and the weight of the conductive busbar is light.

[0057] In some embodiments, the conductive body 1 is a copper conductor or an aluminum conductor, which has good conductive performance and is conducive to ensuring that the conductive busbar has good conductive performance. For example, the conductive body 1 is an aluminum conductor, which is conducive to reducing the weight of the conductive busbar.

[0058] Under the action of water and air, the connection end 12 will undergo an electrochemical reaction, thereby causing the connection end 12 to be corroded and leading to an increase in the resistance of the connection end 12 and the contact area between the connection end 12 and the pole, a substantial increase in the temperature of the contact area between the connection end 12 and the pole, and serious problems such as the failure of the connection between the connection end 12 and the pole or a fire. Therefore, in some embodiments, the surface of the connection end 12 that contacts the surface of the battery cell or the external circuit is electroplated with an anti-corrosion conductive layer 3, which greatly reduces the electrochemical corrosion caused by the potential difference, thereby ensuring that the conductive busbar has good conductive performance.

[0059] The anti-corrosion conductive layer 3 is formed on the surface of the connection end 12 by electroplating, which has the advantages of simple forming process and high efficiency, is conducive to improving the processing efficiency of the conductive busbar, and reduces the processing cost of the conductive busbar; and the connection between the anti-corrosion conductive layer 3 and the connection end 12 formed by electroplating is relatively firm.

[0060] The connection end 12 has two lap surfaces arranged opposite to each other along the thickness direction of the connection end 12, one of the lap surfaces is in contact with the surface of the pole after the conductive busbar is connected to the pole, and the anti-corrosion conductive layer 3 is electroplated on at least two lap surfaces of the connection end 12.

[0061] In order to simplify the processing of the corrosion-resistant conductive layer 3 on the surface of the connecting end 12, the outer surface of the connecting end 12 is completely covered by the corrosion-resistant conductive layer 3.

[0062] In some embodiments, as shown in Figure 2 The corrosion-resistant conductive layer 3 is a galvanized layer. In other embodiments, the corrosion-resistant conductive layer 3 can also be a tinned layer.

[0063] In some embodiments, as shown in Figures 3 to 6 The outer surface of the connecting end 12 at least contacting the battery cell or the external circuit is covered by the removable pre-plating shielding layer 4, and the outer surface of the pre-plating shielding layer 4 is limited to form the electrophoretic insulating layer 2.

[0064] The pre-plating shielding layer 4 is a tape adhered to the surface of the electrical connecting part 11. In other embodiments, the pre-plating shielding layer 4 can also be a rubber sleeve or the like.

[0065] As shown in Figures 3 to 6 The processing procedure of the conductive busbar is briefly introduced as follows:

[0066] 1. Preparing the conductive body 1;

[0067] 2. Covering the surface of the connecting end 12 at least contacting the battery cell or the external circuit with the removable pre-plating shielding layer 4;

[0068] 3. Placing the conductive body 1 obtained in step 2 in the electrophoretic tank after degreasing to perform electrophoresis, and then taking out and transferring to the baking oven to perform high-temperature baking and solidification to form the electrophoretic insulating layer 2;

[0069] 4. Removing the pre-plating shielding layer 4 on the conductive body 1 obtained in step 3 to expose the surface of the connecting end 12;

[0070] 5. Electroplating the connecting end 12 of the conductive body 1 obtained in step 4 to form the corrosion-resistant conductive layer 3 on the surface of the connecting end 12.

[0071] By setting the pre-plating shielding layer 4, the surface of the connecting end 12 contacting the battery cell or the external circuit is prevented from forming the electrophoretic insulating layer 2 during the subsequent electrophoresis of the electrical connecting part 11, so that the electrophoretic insulating layer 2 is only formed on the outer surface of the electrical connecting part 11 but not on the outer surface of the connecting end 12. After the electrophoresis is completed, the surface of the connecting end 12 is electroplated. Since the electrophoretic insulating layer 2 has insulation performance, the electrophoretic insulating layer 2 cannot conduct current, so that the corrosion-resistant conductive layer 3 is not formed on the outer surface of the electrophoretic insulating layer 2, and the corrosion-resistant conductive layer 3 is only formed on the outer surface of the connecting end 12, thereby reducing the electroplating area and the electroplating cost.

[0072] It should be noted that before the electrophoretic formation of the electrophoretic insulating layer 2 outside the electrical connection part 11, the pre-plating shielding layer 4 is required to completely cover the surface of the connection end 12 which will be plated to form the anti-corrosion conductive layer 3 after electrophoresis.

[0073] The electrophoresis process of the conductive body 1 in step 2 includes the following steps: placing the electrophoretic liquid in the electrophoresis tank, placing the conductive body 1 in the electrophoresis tank, depositing the insulating layer on the surface of the conductive body 1 by the electric field, and monitoring the solid content, conductivity, temperature, current, voltage, time, etc. of the electrophoretic liquid during the electrophoresis process.

[0074] Before the electrophoresis process of the conductive body 1 in step 2, the conductive body 1 is sequentially subjected to degreasing treatment, cleaning treatment, pickling treatment, cleaning treatment, and immersion treatment.

[0075] The degreasing treatment specifically includes the following steps: placing the conductive body 1 in a sodium hydroxide solution of a certain concentration, and keeping the sodium hydroxide solution at a specified temperature, so that the conductive body 1 is continuously soaked for a specified time to remove oil stains and impurities on the surface of the conductive body 1, so as to obtain a clean conductive body 1.

[0076] The pickling treatment specifically includes the following steps: using a sulfuric acid solution of a certain concentration to neutralize the residual alkali on the surface of the workpiece and remove oil stains and impurities on the surface of the workpiece, so as to further clean the surface of the conductive body 1.

[0077] The immersion treatment specifically includes the following steps: immersing the conductive body 1 subjected to the second cleaning treatment in the electrophoretic liquid, so that the conductive body 1 is fully contacted with the electrophoretic liquid.

[0078] The above-mentioned cleaning treatment refers to cleaning the conductive body with a cleaning liquid such as water, wherein the cleaning treatment before pickling treatment is mainly to flush away the sodium hydroxide solution on the surface of the conductive body, and the cleaning treatment after pickling treatment is mainly to flush away the sulfuric acid solution on the surface of the conductive body.

[0079] After the electrophoresis of the conductive body 1 in step 2, the conductive body 1 subjected to the electrophoresis is first subjected to cleaning treatment, and then the conductive body 1 is placed in an electric oven and baked at 200°C for a predetermined time, so that the electrophoretic insulating layer 2 is solidified to form a hard electrophoretic insulating layer 2.

[0080] In step 5, the conductive body 1 obtained in step 4 can be placed in an electroplating liquid, and then electroplated to form an anti-corrosion conductive layer 3 on the outer surface of the connection end 12.

[0081] Before the connection end 12 is electroplated, an electrophoretic insulating layer 2 is formed on the outer surface of the electrical connection part 11 by electrophoresis, and the connection between the electrophoretic insulating layer 2 and the electrical connection part 11 is firm without any gap. When the connection end 12 is electroplated, the outer surface of the electrical connection part 11 will not form the corrosion-resistant conductive layer 3, and the electroplating cost can be reduced. Moreover, the electrophoretic insulating layer 2 completely separates the electrical connection part 11 from the outside air, which can effectively prevent the electrical connection part 11 from being corroded by water vapor.

[0082] In some embodiments, the conductive busbar is a bending structure formed with a clearance space, in order to avoid interference between the conductive busbar and other structures around the pole of the battery cell.

[0083] Specifically, as shown in Figure 3 The electrical connection part 11 includes a first connection part 111, a second connection part 112, and a third connection part 113 connected in sequence, the first connection part 111 and the third connection part 113 are located on opposite sides of the second connection part 112 in the thickness direction, one end of the first connection part 111 away from the second connection part 112 is connected to one of the connection ends 12, and one end of the third connection part 113 away from the second connection part 112 is connected to the other connection end 12.

[0084] One of the connection ends 12, the first connection part 111, and the second connection part 112 are connected in sequence to form a clearance space, and the second connection part 112, the first connection part 111, and the other connection end 12 are connected in sequence to form a clearance space.

[0085] For example, the first connection part 111 and the third connection part 113 are each connected to the two ends of the second connection part 112 in the length direction by a circular arc part, the first connection part 111 and the third connection part 113 are parallel, and the length direction of the second connection part 112, the thickness direction of the first connection part 111, and the thickness direction of the second connection part 112 are perpendicular to each other.

[0086] In some embodiments, as shown in Figure 3 The conductive body 1 is an integrally formed structure. Specifically, the aluminum plate is punched and bent to form the conductive body 1. Such arrangement is beneficial to simplify the processing of the conductive body 1 and reduce the processing cost. Moreover, the formed conductive busbar can perfectly fit with the surrounding structure, avoid interference between the conductive busbar and the surrounding structure, and maximize the space utilization.

[0087] In some embodiments, as shown in Figure 1 and Figure 6As shown, the connecting end 12 is provided with a connecting hole 100 penetrating through the thickness direction thereof, and the conductive busbar and the pole are electrically connected by a fastener threaded to the pole after penetrating through the connecting hole 100, so that the connecting mode is simple and the cost is low.

[0088] The battery assembly provided by the embodiment of the utility model, including above-mentioned conductive busbar, reduce the weight of conductive busbar, be favorable to the lightweight of battery assembly, through improving the processing efficiency of conductive busbar, reduce the processing cost of conductive busbar, be favorable to improving the processing efficiency of battery assembly, reduce the processing cost of battery assembly.

[0089] In some embodiments, the utility model further provides a vehicle, including above-mentioned battery assembly, and battery assembly is used as power supply and supplies power for the power consumption component on the vehicle.The vehicle includes above-mentioned battery assembly, can reduce the weight of vehicle, reduce the cost of vehicle.It needs to be explained that the vehicle can be the pure electric vehicle or hybrid vehicle of application above-mentioned battery assembly, etc., and will not be specifically limited here, and above-mentioned battery assembly can also be applied to other structures needing to use battery power supply, and will not be illustrated here one by one.

[0090] In addition, the above is only the preferred embodiment of the utility model and the technical principle applied. The person skilled in the art will understand that the utility model is not limited to the specific embodiments here, and the person skilled in the art can make various obvious changes, readjustment and replacement without departing from the protection scope of the utility model. Therefore, although the utility model is more specifically explained through the above embodiments, the utility model is not only limited to the above embodiments, and can include more other equivalent embodiments without departing from the utility model concept, and the scope of the utility model is determined by the appended claims.

Claims

1. An electrically conductive busbar, characterized in that The conductive busbar (1) comprises two connecting ends (12) and an electric connecting part (11) connecting the two connecting ends (12), one of the connecting ends (12) is used to electrically connect the battery cell, and the other connecting end (12) is used to electrically connect the battery cell or external circuit; The electrophoretic insulation layer (2) covers the outer surface of the electric connecting part (11). The thickness of the electrophoretic insulation layer (2) is 0.03mm-0.1mm.

2. The electrically conductive busbar of claim 1, wherein, The surface of the connecting end (12) contacting the battery cell or the external circuit is plated with a corrosion-resistant conductive layer (3).

3. The conductive busbar according to claim 1, characterized in that, The corrosion-resistant conductive layer (3) is a zinc plating layer or a tin plating layer.

4. The electrically conductive busbar of claim 3, wherein, The outer surface of the connecting end (12) contacting the battery cell or the external circuit is covered with a removable pre-plating masking layer (4), and the outer surface of the pre-plating masking layer (4) is limited to form the electrophoretic insulation layer (2).

5. The conductive busbar according to claim 1, wherein The conductive busbar is a bending structure with a avoiding space.

6. The conductive busbar according to claim 1, wherein The electric connecting part (11) comprises a first connecting part (111), a second connecting part (112) and a third connecting part (113) connected in sequence, the first connecting part (111) and the third connecting part (113) are located on the opposite sides of the second connecting part (112) in the thickness direction, and one end of the first connecting part (111) away from the second connecting part (112) is connected to one of the connecting ends (12), and one end of the third connecting part (113) away from the second connecting part (112) is connected to the other connecting end (12).

7. The electrically conductive busbar of claim 6, wherein, The connecting end (12) is provided with a connecting hole (100) penetrating in the thickness direction.

8. The conductive busbar according to any one of claims 1 to 7, characterized in that, The battery assembly comprises a plurality of battery cells and the conductive busbar according to any one of claims 1-8.

9. A battery assembly characterized by, The plurality of battery cells are connected in series and / or parallel through the conductive busbar. The plurality of battery cells comprise external battery cells, the external battery cells are electrically connected with the conductive busbar, and the conductive busbar is used to electrically connect the external circuit. The battery assembly comprises the battery assembly according to claim 9.

10. Vehicle, characterized in that ​

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