Circuit adapter, battery and power-consuming device thereof

Abstract

Circuit adapter comprising: a housing (1) provided with a mounting hole (11); a conductive pin (2), wherein two ends of the conductive pin (2) are each a first end section (21) and a second end section (22); a conductive plate, wherein two ends of the conductive plate (3) are each a third end section (31) and a fourth end section (32); wherein the second end section (22) is electrically connected to the third end section (31), and wherein the conductive pin (2) and the conductive plate (3) are each installed in the mounting hole (11), and wherein the first end section (21) extends out of the mounting hole (11), and wherein the fourth end section (32) forms a transition cavity (113) with the mounting hole (11).

Description

Circuit adapter, battery and electric appliance thereof

[0001] The present application claims priority to the Chinese patent application No. 202422052984X filed on August 22, 2024 with the China Patent Office, the whole content of the above application is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery, in particular to a circuit adapter, a battery and an electric appliance thereof. BACKGROUND

[0003] The BDU (Battery Disconnect Unit) of the traditional battery is a key component specially designed for the inside of the battery pack, which belongs to a kind of high-voltage distribution box. The main function of the BDU is to provide power management and protection for the high-voltage system. Specifically, the BDU is responsible for connecting high-voltage components through busbars and wiring harnesses to ensure the normal operation of the high-voltage system. It has multiple functions such as charge and discharge control, high-voltage component power-on control, circuit overload and short circuit protection, high-voltage sampling, and low-voltage control. The BDU is usually connected with the connector using copper bars. TECHNICAL PROBLEM

[0004] For space-compact batteries, due to the limited space, the use of copper bars for switching will occupy a large space, which will reduce the energy density of the battery. At the same time, the manufacturing cost of the switching copper bar is also relatively high, and additional screws are needed for fixing and connecting, which further increases the assembly steps and the weight of the battery. TECHNICAL SOLUTION

[0005] In a first aspect, the present application provides a circuit adapter, comprising:

[0006] a housing, the housing is provided with an assembly hole;

[0007] a conductive column, the two ends of the conductive column are respectively a first end and a second end;

[0008] a conductive sheet, the two ends of the conductive sheet are respectively a third end and a fourth end;

[0009] wherein the second end and the third end are electrically connected, the conductive column and the conductive sheet are installed in the assembly hole, the first end passes out of the assembly hole, and the fourth end and the assembly hole form a switching cavity.

[0010] In a second aspect, the application provides a battery, comprising a battery shell, an electric cell group, and the above-mentioned circuit adapter, the battery shell is provided with a mounting hole, the electric cell group has a conductive part, the circuit adapter is mounted at the mounting hole, the conductive part is inserted into the adapter cavity, and the conductive sheet is overlapped.

[0011] In a third aspect, the application provides a power utilization device comprising the above-mentioned battery. Advantages

[0012] 1. The combination of the conductive column and the conductive sheet is used instead of the traditional adapter copper bar for connection, which reduces the space required for the conductive part, frees up more space inside the battery for accommodating the electric cell, thereby helping to improve the overall energy density of the battery, making it have higher energy storage capacity under the same volume.

[0013] 2. Compared with the traditional adapter copper bar, the combination of the conductive column and the conductive sheet uses less conductive material, thereby reducing the total weight of the battery, especially in the field of new energy vehicles, lighter batteries can bring better endurance and driving performance.

[0014] 3. The fourth end of the conductive sheet and the assembly hole jointly constitute the adapter cavity, this design allows the conductive column to be connected in a plug-in manner, compared with the traditional screw fixing method, the installation process is more simple and fast, significantly improves the production efficiency, at the same time also reduces the potential human error, enhances the reliability and consistency of the product.

[0015] 4. Since a more simple and efficient connection method is adopted, not only the use of raw materials is reduced, but also the labor cost in the production process is reduced, finally the effective control of the cost is realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a schematic diagram of the three-dimensional structure of the application;

[0017] Fig. 2 is a schematic diagram of the cross-sectional structure of the application;

[0018] Fig. 3 is a schematic diagram of the partial structure of the conductive column and the conductive sheet of the application;

[0019] Fig. 4 is a schematic diagram of the partial exploded structure of the conductive column and the conductive sheet of the application;

[0020] Fig. 5 is a schematic diagram of the battery structure of the application;

[0021] Fig. 6 is an enlarged view of Fig. 5 of the application.

[0022] Wherein, the reference signs have the following meanings: 1, shell; 11, assembly hole; 111, narrow diameter section; 112, wide diameter section; 113, adapter cavity; 12, structure plate; 13, assembly structure; 2, conductive column; 21, first end; 22, second end; 23, limiting boss; 3, conductive sheet; 31, third end; 32, fourth end; 33, limiting hole; 34, protrusion; 4, battery; 41, battery shell; 42, cell group; 43, conductive part. Embodiments of the present application

[0023] Referring to FIGS. 1-4, the present application discloses a circuit adapter, comprising a shell 1, a conductive column 2 and a conductive sheet 3, the shell 1 is provided with an assembly hole 11, the conductive column 2 has a first end 21 and a second end 22 at two ends respectively, the conductive sheet 3 has a third end 31 and a fourth end 32 at two ends respectively, wherein the second end 22 is electrically connected with the third end 31, the conductive column 2 and the conductive sheet 3 are both installed in the assembly hole 11, the first end 21 extends out of the assembly hole 11, and the fourth end 32 forms an adapter cavity 113 with the assembly hole 11.

[0024] In some embodiments, the shell 1 is provided with an assembly hole 11, the conductive column 2 and the conductive sheet 3 are both assembled in the assembly hole 11, the first end 21 of the conductive column 2 extends out of the assembly hole 11 for connecting with an external conductive system, the second end 22 of the conductive column 2 is electrically connected with the third end 31 of the conductive sheet 3 in the assembly hole 11, that is, the second end 22 and the third end 31 can be directly electrically connected by lapping, or other adapter circuits can be provided as needed to adapt the conductive column 2 and the conductive sheet 3. The fourth end 32 of the conductive sheet 3 forms an adapter cavity 113 with the assembly hole 11, that is, the conductive part 43 of the cell group 42 in the battery 4 can be directly inserted into the adapter cavity 113, and the conductive part 43 is in contact with the fourth end 32 for electrical connection.

[0025] It should be noted that the conductive sheet 3 and the conductive column 2 can use materials with stable physical and chemical properties and good electrical conductivity, such as copper, copper alloy, aluminum, aluminum alloy, silver, silver alloy, tinned copper, nickel and nickel alloy, etc. The shape of the conductive sheet 3 is not limited here, and it can be stable and electrically connected with the conductive column 2 and the conductive part 43, such as sheet shape, U-shaped cross-section sheet shape, rectangular tube shape, cylindrical tube shape or other irregular shapes, which can ensure that the conductive sheet 3 is stably electrically connected with the conductive column 2 and the conductive part 43 respectively.

[0026] In some embodiments, in order to improve the stability of the contact between the conductive sheet 3 and the conductive part 43, the conductive sheet 3 is in the shape of a U, and the fourth end 32 is the end of the conductive sheet 3 with an opening, i.e. the cross-section of the sheet-shaped conductive sheet 3 is in the shape of a U, and the fourth end 32 is the end of the conductive sheet 3 with an opening, i.e. the fourth end 32 is the side of the U-shaped conductive sheet 3 with an opening, and the conductive part 43 of the battery cell is inserted into the U-shaped conductive sheet 3, and the upper and lower sides of the conductive part 43 are in contact with the conductive sheet 3, thereby improving the stability of the current conduction between the conductive sheet 3 and the conductive part 43.

[0027] In some embodiments, in order to ensure the stability of the connection between the conductive sheet 3 and the conductive column 2, the third end 31 of the conductive sheet 3 is provided with a limiting hole 33, and the second end 22 of the conductive column 2 is provided with a limiting boss 23, and the conductive column 2 passes through the limiting hole 33 until the limiting hole 33 abuts against the limiting boss 23. The above is achieved by arranging the conductive column 2 to pass through the limiting hole 33, which ensures that the conductive sheet 3 and the conductive column 2 are always in contact, thereby ensuring the circuit transmission effect. The conductive column 2 is provided with a limiting boss 23 that abuts against the limiting hole 33, so as to facilitate the positioning of the conductive sheet 3 and the conductive column 2 during connection, and prevent the conductive column 2 from being installed out of position or the entire conductive column 2 from passing through the limiting hole 33.

[0028] In some embodiments, in order to ensure the stability of the installation of the conductive sheet 3, the assembly hole 11 has a narrow diameter section 111 and a wide diameter section 112, the conductive column 2 passes through the narrow diameter section 111, and the conductive sheet 3 is arranged in the wide diameter section 112, and the diameter of the limiting boss 23 is greater than the diameter of the narrow diameter section 111.

[0029] In some embodiments, the assembly hole 11 is divided into a narrow diameter section 111 and a wide diameter section 112, and the size of the conductive sheet 3 is designed to be unable to enter the narrow diameter section 111. In some embodiments, the width of the conductive sheet 3 can be greater than the maximum size that can pass through the narrow diameter section 111. Based on the structure of the U-shaped conductive sheet 3, the third end 31 of the conductive sheet 3 is attached to the wall surface at the variable diameter position of the narrow diameter section 111 and the wide diameter section 112, thereby effectively improving the posture of the conductive sheet 3 in the wide diameter section 112, and further ensuring that the conductive sheet 3 does not deviate during assembly of the conductive column 2.

[0030] In some embodiments, in order to ensure the contact effect of the conductive sheet 3 and the conductive column 2, the middle part of the conductive sheet 3 is provided with a protrusion 34 towards the middle part of the adapter cavity 113. In some embodiments, the middle part of the conductive sheet 3 is provided with a protrusion 34 towards the middle part of the adapter cavity 113, that is, the middle part of the conductive sheet 3 is provided with a protrusion 34, and the protrusion 34 invades the adapter cavity 113. In this way, when the conductive part 43 is inserted into the adapter cavity 113, the conductive part 43 is tightly attached to the conductive sheet 3. When the conductive sheet 3 adopts a U-shaped conductive sheet 3, that is, the middle part of the conductive sheet 3 located on the upper side of the adapter cavity 113 is provided with a protrusion 34 towards the lower side, and the middle part of the conductive sheet 3 located on the lower side of the adapter cavity 113 is provided with a protrusion 34 towards the upper side, further improving the contact effect with the conductive part 43.

[0031] In some embodiments, the distance from the end face of the third end 31 of the conductive sheet 3 to the protrusion 34 is less than the length of the conductive column 2 outside the assembly hole 11, so as to prevent the conductive column 2 from retreating into the assembly hole 11, thereby affecting the electrical connection of the conductive column 2 with the outside.

[0032] In some embodiments, the outer wall of the shell 1 is provided with a structural plate 12, and the structural plate 12 is provided with an assembly structure 13 for connecting with the battery 4.

[0033] In some embodiments, a structural plate 12 is provided along the outer wall surface of the shell 1, and the shape of the structural plate 12 can be set according to actual needs, such as square, circular or other special-shaped structures as needed. The assembly structure 13 is arranged on the structural plate 12, and the assembly structure 13 is used for fixing the structural plate 12 and the battery 4. The assembly structure 13 can be freely selected according to needs, such as round holes, screw holes, pin columns, buckles or clamping grooves, etc., which can satisfy the installation and fixation of the structural plate 12 and the battery 4. The assembly structure 13 on the structural plate 12 facilitates the installation of the shell 1 and the battery 4, and further facilitates the installation and fixation of the whole circuit adapter.

[0034] In some embodiments, two assembly holes 11 are provided on the shell 1, and a conductive column 2 and a conductive sheet 3 are arranged in each assembly hole 11, that is, two assembly holes 11 are provided on the shell 1, and a conductive column 2 and a conductive sheet 3 are arranged in each assembly hole 11. When the shell 1 is installed on the battery 4, the connection of the positive and negative electrodes is simultaneously satisfied, and the installation difficulty is further reduced.

[0035] In some embodiments, the conductive sheet 3 is an elastic conductive sheet. By using an elastic conductive sheet for the conductive sheet 3, a small amount of the conductive sheet 3 can be arranged to invade the adapter cavity 113 originally connected to the conductive part 43. After the conductive part 43 is inserted into the adapter cavity 113 with the above structure, the conductive sheet 3 is elastically deformed. Due to the elastic potential energy of the conductive sheet 3, the conductive sheet 3 is more tightly and reliably contacted with the conductive part 43, thereby ensuring the stability of the conduction.

[0036] Referring to FIGS. 5 and 6, the application further provides a battery 4, comprising a battery shell 41, a battery cell group 42, and the above-mentioned circuit adapter. The battery shell 41 is provided with a mounting hole, the battery cell group 42 is provided with a conductive part 43, the circuit adapter is mounted at the mounting hole, the conductive part 43 is inserted into the adapter cavity 113, and the conductive part 43 is overlapped with the conductive sheet 3. By directly overlapping the conductive part 43 of the battery cell group 42 with the conductive sheet 3 in the circuit adapter, the stability and reliability of current transmission can be ensured, and the risk of power loss or power failure caused by poor contact can be reduced. The circuit adapter is matched with the mounting hole of the battery shell 41, so that the connection between the battery cell group 42 and the circuit adapter becomes more simple and fast, the assembly difficulty is reduced, and the production efficiency is improved. Moreover, by reasonably designing the position and structure of the circuit adapter, the space utilization inside the battery 4 can be more efficient, which is helpful to achieve the design goal of being more compact and lightweight.

[0037] The application is based on the same concept, and further provides a power consumption device, which applies the battery 4 as described above.

Claims

A circuit adapter comprises: a housing (1) provided with a mounting hole (11); a conductive column (2) having a first end (21) and a second end (22) at two ends thereof; a conductive sheet (3) having a third end (31) and a fourth end (32) at two ends thereof; wherein the second end (22) is electrically connected with the third end (31), the conductive column (2) and the conductive sheet (3) are both mounted in the mounting hole (11), the first end (21) penetrates out of the mounting hole (11), and the fourth end (32) and the mounting hole (11) form an adapter cavity (113). A circuit adapter according to claim 1, wherein The conductive sheet (3) is in a U shape, and the fourth end (32) is an open end of the conductive sheet (3). A circuit adapter according to claim 2, wherein The third end (31) of the conductive sheet (3) is provided with a limiting hole (33), the second end (22) of the conductive column (2) is provided with a limiting boss (23), and the conductive column (2) penetrates through the limiting hole (33) to abut against the limiting boss (23). A circuit adapter according to claim 3, wherein The mounting hole (11) has a narrow diameter section (111) and a wide diameter section (112), the conductive column (2) is arranged in the narrow diameter section (111), and the conductive sheet (3) is arranged in the wide diameter section (112), wherein the diameter of the limiting boss (23) is greater than the diameter of the narrow diameter section (111). A circuit adapter according to claim 1, wherein The middle part of the conductive sheet (3) is provided with a protrusion (34) towards the middle part of the adapter cavity (113). A circuit adapter according to claim 5, wherein The distance from the end face of the third end (31) of the conductive sheet (3) to the protrusion (34) is less than the length of the conductive column (2) outside the mounting hole (11). A circuit adapter according to claim 1, wherein The outer wall of the housing (1) is provided with a structure plate (12), and the structure plate (12) is provided with a mounting structure (13). A circuit adapter according to claim 1, wherein The housing (1) is provided with two mounting holes (11), and the conductive column (2) and the conductive sheet (3) are arranged in each mounting hole (11). A circuit adapter according to any one of claims 1-8, wherein The conductive sheet (3) is an elastic conductive sheet. A battery comprises a battery shell (41), a cell group (42), and the circuit adapter of any one of claims 1-9, the battery shell (41) is provided with a mounting hole, the cell group (42) has a conductive part (43), the circuit adapter is mounted at the mounting hole, the conductive part (43) is inserted into the adapter cavity (113), and the conductive part (43) is overlapped with the conductive sheet (3). An electric device comprises the battery (4) of claim 10.