A circuit assembly and battery module suitable for multiple types of construction machines

Abstract

The utility model discloses a kind of circuit assembly and battery module suitable for multiple types of engineering machinery, it is related to electronic equipment technical field, the above-mentioned circuit assembly suitable for multiple types of engineering machinery is used to make several battery core electric connection, including bottom plate, cover plate, main lead and several branch leads, cover plate is connected with bottom plate, wire slot and several through bottom plate's placement grooves are equipped on bottom plate, wire slot is communicated with several placement grooves, several placement grooves are all installed with ba piece, ba piece is electrically connected with battery core, main lead is installed in wire slot, one end of several branch leads is electrically connected with main lead, another end of several branch leads is electrically connected with corresponding ba piece respectively, one end of main lead is electrically connected with wire harness port, wire harness port is installed in bottom plate, the device replaces FPC board by wire, can greatly reduce cost, when wire is damaged, only need to replace wire, wire harness assembly whole does not need to be replaced, it is favorable to reduce the cost of repair.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, and more specifically, to a circuit assembly suitable for various types of engineering machinery. Furthermore, this utility model also relates to a battery module including the aforementioned circuit assembly suitable for various types of engineering machinery. Background Technology

[0002] With the rapid development of new energy vehicles, energy storage systems, and portable electronic devices, the market demand for the energy density, safety, and customization of lithium-ion batteries continues to increase, directly driving the diversified expansion of battery pack product lines. To adapt to the differentiated requirements of different application scenarios for voltage platforms (such as 48V low-voltage systems to 800V high-voltage platforms) and capacity specifications (from Wh-level consumer batteries to MWh-level energy storage units), the structural design of battery modules is becoming increasingly refined, standardized, and scalable.

[0003] Currently, the mainstream solution in the industry uses flexible printed circuit boards (FPCs) as the electrical interconnect carrier integrated within the module. Through precision etching, the acquisition lines (voltage, temperature) and insulating protective layers are integrated onto a thin polyimide substrate, offering advantages such as excellent flexibility, high integration, and compatibility with automated assembly, significantly improving module consistency and production efficiency. However, FPC manufacturing requires high-purity electrolytic copper foil, special polyimide films, and high-end cover film materials, resulting in a high proportion of cost. Furthermore, its processing involves more than 20 steps, including precision exposure, etching, and lamination. Fluctuations in yield further increase the average cost. Once the rigid design of FPCs is finalized, it is difficult to adapt to the rapid iteration of module sizes, and damage to local circuits usually requires replacement of the entire module, leading to poor repair economics.

[0004] In conclusion, how to reduce the overall cost and maintenance difficulty of battery modules is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a circuit component suitable for various types of engineering machinery. By replacing the FPC board with wires, the cost can be greatly reduced, and the maintenance cost can also be reduced.

[0006] Another objective of this invention is to provide a battery module that includes the aforementioned circuit components suitable for various types of engineering machinery.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A circuit assembly suitable for various types of engineering machinery, used to electrically connect several battery cells, comprising:

[0009] A base plate and a cover plate, the cover plate being connected to the base plate, the base plate being provided with a wire groove and a plurality of placement grooves penetrating the base plate, the wire groove communicating with the plurality of placement grooves, and a battery plate being installed in each of the plurality of placement grooves, the battery plate being electrically connected to the battery cell;

[0010] The system includes a main conductor and several branch conductors. The main conductor is installed in the conductor groove. One end of each of the branch conductors is electrically connected to the main conductor, and the other end of each branch conductor is electrically connected to the corresponding plate. One end of the main conductor is electrically connected to a wire harness port, which is installed on the base plate.

[0011] Furthermore, the present invention provides a positioning protrusion in the placement groove and a bending groove on the pad that cooperates with the positioning protrusion. When the positioning protrusion is placed in the bending groove, the position of the pad is fixed.

[0012] Furthermore, the present invention includes two outgoing plates and several connecting plates. The outgoing plates include bent lead-out portions. When the cover plate is connected to the bottom plate, the lead-out portions are exposed outside the cover plate.

[0013] Furthermore, the base plate is provided with at least two external protrusions, and the lead-out portions of the two export plates are respectively located on the corresponding external protrusions. A protective sleeve is detachably installed on the external protrusion.

[0014] Furthermore, the base plate is provided with a fixing groove, and the wire harness port is placed in the fixing groove to fix the wire harness port to the base plate.

[0015] Furthermore, the present invention provides a plurality of fixing members in the wire groove for fixing the main wire.

[0016] Furthermore, in this invention, the fixing member is a protrusion fixed in the wire groove, and when the main wire contacts the protrusion, the main wire is fixed.

[0017] A battery module includes the circuit assembly suitable for various types of engineering machinery as described above, and further includes two side plates, two end plates and a plurality of battery cells. The two side plates and the two end plates are fixedly connected to form a cavity for accommodating the plurality of battery cells. The circuit assembly suitable for various types of engineering machinery is located on top of the plurality of battery cells and is connected between the two side plates.

[0018] Furthermore, each of the two side plates is provided with a plurality of fixing holes, and the bottom plate is provided with a plurality of connecting blocks. When the connecting blocks are located in the fixing holes, the bottom plate and the side plates are fixed.

[0019] Furthermore, the cover plate is provided with a plurality of connecting holes, the bottom plate is provided with connecting grooves corresponding to the connecting holes, and the side plate is provided with a plurality of slots corresponding to the positions of the connecting holes.

[0020] This utility model provides a circuit assembly applicable to various types of engineering machinery. In use, the base plate has wire grooves and several through-hole placement slots. Several battery pads are placed in these slots, and the pads are electrically connected to the battery cells through the slots. The main wire is placed in the wire grooves, and one end of several branch wires is electrically connected to the main wire, while the other end is electrically connected to the corresponding battery pad. In other words, several branch wires can electrically connect several battery pads to the main wire, thus electrically connecting several battery cells. One end of the main wire is electrically connected to a wiring harness port, which is installed on the base plate. Charging and discharging with the external environment can be achieved through the wiring harness port. After the base plate and cover plate are fixedly connected, the main wire is located in the wire groove, and the battery pads are located in the fixing slot, thus fixing the positions of the main wire and battery pads and ensuring normal circuit operation. Therefore, this device uses wires instead of FPC boards, which greatly reduces costs. When the wires are damaged, only the wires need to be replaced, without replacing the entire wiring harness assembly, which helps reduce repair costs.

[0021] The present invention also provides a battery module, which includes the above-mentioned circuit components applicable to various types of engineering machinery, and has the above-mentioned beneficial effects. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the disassembled circuit components of the present invention, which are applicable to various types of engineering machinery.

[0024] Figure 2 This is a schematic diagram of the circuit components and battery modules of this utility model, applicable to various types of engineering machinery, before installation.

[0025] Figure 3This is a schematic diagram of the structure of the circuit components and battery modules of this utility model after installation, which are applicable to various types of engineering machinery.

[0026] Figure 4 This is a structural diagram of the circuit components and battery modules of this utility model after disassembly, which are applicable to various types of engineering machinery.

[0027] Figure 5 This is a schematic diagram of the battery cell series connection structure provided by this utility model;

[0028] Figure 6 This is a schematic diagram of the parallel connection structure of the battery cells provided by this utility model.

[0029] Figures 1-6 In the accompanying drawings, the reference numerals include:

[0030] 1. Base plate; 101. Placement groove; 102. Wire groove; 103. Fixing component; 104. Positioning protrusion; 2. Cover plate; 3. Bracket; 301. Bending groove; 302. Outlet bracket; 303. Connecting bracket; 304. Lead-out section; 4. Main wire; 5. Branch wire; 6. Wire harness port; 7. External protrusion; 8. Sheath; 9. Fixing groove; 10. Side plate; 11. End plate; 12. Battery cell; 13. Fixing hole; 14. Connecting clip; 15. Connecting hole; 16. Connecting groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] The core of this invention is to provide a circuit component suitable for various types of engineering machinery. By replacing the FPC board with wires, the cost can be greatly reduced, and the maintenance cost can also be reduced.

[0033] Another core aspect of this invention is to provide a battery module that includes the aforementioned circuit components suitable for various types of engineering machinery.

[0034] Please refer to Figure 1A circuit assembly suitable for various types of engineering machinery is used to electrically connect several battery cells 12. It includes a base plate 1, a cover plate 2, a main conductor 4, and several branch conductors 5. The cover plate 2 is connected to the base plate 1. The base plate 1 is provided with a conductor groove 102 and several placement slots 101 that penetrate the base plate 1. The conductor groove 102 is connected to the several placement slots 101. Each of the several placement slots 101 has a switch plate 3 installed in it. The switch plate 3 is electrically connected to the battery cell 12. The main conductor 4 is installed in the conductor groove 102. One end of each of the several branch conductors 5 is electrically connected to the main conductor 4. The other end of each of the several branch conductors 5 is electrically connected to the corresponding switch plate 3. One end of the main conductor 4 is electrically connected to a wire harness port 6, which is installed on the base plate 1.

[0035] Optionally, in some embodiments, the base plate 11 is an injection molded part, supported by a one-piece injection molding method.

[0036] Optionally, in some embodiments, the top cover is made of injection molded material, and the top cover is detachably fixed to the base plate 11 by bolts.

[0037] In other embodiments, the upper cover and the bottom plate 11 are detachably connected by a snap-fit ​​method. Specifically, the upper cover is provided with a number of snap-fit ​​protrusions, and the bottom plate 11 is provided with a number of slots corresponding to the snap-fit ​​protrusions. The bottom plate 11 and the upper cover can be fixed by inserting the snap-fit ​​protrusions into the slots.

[0038] Optionally, in some embodiments, the top cover is provided with a clamping layer for clamping the bar sheet 33 and the main guide line 44 and the branch guide line 56.

[0039] In the above embodiments, the clamping layer can be made of a flexible material, specifically, it can be made of materials such as rubber or silicone to increase its clamping effect.

[0040] Optionally, in some embodiments, the fixing groove 9101 is provided with a connection port for connecting the fixing groove 9101 and the wire passage groove 102.

[0041] Optionally, in some embodiments, the electrode 33 is fixedly connected to the electrode of the battery cell by welding.

[0042] Optionally, in some embodiments, the number of main lines 4 is one or more, and the number used can be determined according to actual use. Specifically, the number of main lines 4 is determined according to whether the circuit is connected in parallel or in series during actual use.

[0043] Optionally, in some embodiments, the bar plate 3 may be made of metal, specifically aluminum or copper.

[0044] Optionally, in some embodiments, the branch conductor 5 is connected to the corresponding plate 3 by welding.

[0045] In use, the base plate 1 is provided with a wire groove 102 and several placement grooves 101 penetrating the base plate 1. Several battery plates 3 are placed in the placement grooves 101 respectively. The battery plates 3 are electrically connected to the battery cells 12 through the placement grooves 101. The main wire 4 is placed in the wire groove 102. One end of several branch wires 5 is electrically connected to the main wire 4, and the other end of several branch wires 5 is electrically connected to the corresponding battery plates 3. That is to say, several battery plates 3 can be electrically connected to the main wire 4 through several branch wires 5, thus realizing the connection between several battery cells 12. Electrical connection: One end of the main conductor 4 is electrically connected to the wire harness port 6, which is installed on the base plate 1. Charging and discharging with the outside world can be achieved through the wire harness port 6. After the base plate 1 and the cover plate 2 are fixedly connected, the main conductor 4 is located in the wire groove and the plate 3 is located in the fixing groove 9, which can fix the positions of the main conductor 4 and the plate 3 and ensure the normal operation of the circuit. Therefore, this device can greatly reduce costs by replacing the FPC board with wires. When the wire is damaged, only the wire needs to be replaced, and the entire wire harness assembly does not need to be replaced, which helps to reduce the cost of repair.

[0046] Optionally, in some embodiments, the base plate 1 is provided with a plurality of reinforcing ribs, which are used to enhance the strength of the base plate 1 and improve its stability during use.

[0047] Please refer to Figure 1 In some embodiments, a positioning protrusion 104 is provided in the placement groove 101, and a bending groove 301 that cooperates with the positioning protrusion 104 is provided on the bar piece 3. When the positioning protrusion 104 is placed in the bending groove 301, the position of the bar piece 3 is fixed. That is, in order to improve the fixing effect of the bar piece 3, a positioning protrusion 104 is provided in the placement groove 101, and a bending groove 301 that cooperates with the positioning protrusion 104 is provided on the bar piece 3. The bending groove 301 is used to cooperate with the positioning protrusion 104 to fix the bar piece 3 in the placement groove 101.

[0048] Optionally, in some embodiments, the bending groove 301 and the positioning protrusion 104 are interference-fitted to fix the bar piece 3 to the placement groove 101.

[0049] Optionally, in some embodiments, the cross-section of the positioning protrusion 104 is T-shaped or inverted trapezoidal, and the bending groove 301 is shaped to cooperate with the positioning protrusion 104. During installation and disassembly, the elastic deformation of the plate 3 allows for quick installation and disassembly, and its fixing effect is better.

[0050] In other embodiments, the bar plate 3 is provided with a through hole, and the placement groove 101 is provided with a fixing post that cooperates with the through hole. The fixing post can be fixed by inserting it into the through hole.

[0051] Please refer to Figure 1In some embodiments, the battery cell 3 includes two lead-out battery cells 302 and several connecting battery cells 303. The lead-out battery cells 302 include bent lead-out portions 304. When the cover plate 2 is connected to the bottom plate 1, the lead-out portions 304 are exposed outside the cover plate 2. In other words, the battery cell 12 can be easily connected to the outside world by leading out the battery cells 3.

[0052] Optionally, in some embodiments, the base plate 1 is provided with at least two external protrusions 7, and the lead-out portions 304 of the two export tablets 302 are respectively located on the corresponding external protrusions 7. A protective sleeve 8 is detachably installed on the external protrusions 7. That is to say, the export tablets 302 are supported by the external protrusions 7 and protected by the protective sleeve 8, which helps to improve the service life of the tablets 3.

[0053] Optionally, in some embodiments, the sheath 8 is fixed to the base plate 1 by means of clips or bolts.

[0054] Please refer to Figure 1 In some embodiments, the base plate 1 is provided with a fixing groove 9, and the wire harness port 6 is placed in the fixing groove 9 to fix the wire harness port 6 to the base plate 1. In other words, the fixing groove 9 increases the firmness of the wire harness port 6 and improves its performance.

[0055] Optionally, in some embodiments, when the cover plate 2 is connected to the base plate 1, a portion of the wire harness port 6 is located between the cover plate 2 and the base plate 1, so as to increase the fixing effect of the wire harness port 6 by the cover plate 2.

[0056] Optionally, in some embodiments, the harness port 6 and the fixing slot 9 are interference-fitted.

[0057] Optionally, in some embodiments, the wire harness port 6 is fixed to the base plate 1 by means of bolts or screws.

[0058] In other embodiments, the bottom of the wire harness port 6 is provided with a connecting groove 16, and the fixing groove 9 is provided with a connecting protrusion that cooperates with the connecting groove 16. The wire harness port 6 and the base plate 1 can be fixed by connecting them together.

[0059] Please refer to Figure 1 In some embodiments, the wire groove 102 is provided with a plurality of fixing members 103 for fixing the main wire 4. The fixing members 103 are used to fix the main wire 4 so as to fix it to the base plate 1.

[0060] Optionally, in some embodiments, the fixing member 103 is a protrusion fixed in the wire groove 102, and when the main wire 4 contacts the protrusion, the main wire 4 is fixed.

[0061] In the above embodiment, the protrusion is integrally formed with the base plate 1, and the main guide line 4 is fixed by the rubber sleeve outside the main guide line 4.

[0062] In other embodiments, the protrusion may be made of a soft material such as rubber or silicone. When the main guide line 4 comes into contact with the protrusion, the protrusion deforms under pressure to fix the main guide line 4.

[0063] In other embodiments, the fastener 103 is a bolt with a pressure plate on the top of the bolt and a threaded hole on the base plate 1. By screwing the bolt into the threaded hole until the pressure plate is pressed into contact with the main guide line 4, the main guide line 4 and the base plate 1 can be fixed.

[0064] In other embodiments, the fastener 103 is a C-shaped clip fixed to the wire groove 102, and the main wire 4 can be fixed by snapping it into the clip.

[0065] Optionally, in some embodiments, the base plate 1 is provided with a fixing member 103 for fixing the branch conductor 5. That is, the fixing member 103 increases the firmness of the branch conductor 5 on the base plate 1, thereby improving its stability during use. The fixing member 103 can achieve the fixing requirement of the branch conductor 5 in the same way as fixing the main conductor 4.

[0066] Optionally, in some embodiments, the base plate 1 is provided with a plurality of positioning holes for fixing the main guide line 4. Specifically, the positioning holes are provided along the wiring position of the main guide line 4, and the main guide line 4 is fixed to the base plate 1 by cable ties through the positioning holes, thereby further improving the firmness of the main guide line 4.

[0067] Optionally, in some embodiments, a nickel plate and a temperature-sensing nickel plate are also included, and are electrically connected to the plate 3 and the main line 4 via the branch wire 5, so as to realize the acquisition of information and temperature of the battery cell 12.

[0068] Please refer to Figure 4 A battery module includes a circuit assembly suitable for various types of engineering machinery, a top plate, two side plates 10, two end plates 11, and a plurality of battery cells 12. The two side plates 10 and the two end plates 11 are fixedly connected to form a cavity for accommodating the plurality of battery cells 12. The circuit assembly suitable for various types of engineering machinery is located on top of the plurality of battery cells 12 and is connected to the two side plates 10. That is, the top plate, the two side plates 10, and the two end plates 11 are combined to form a cavity in which the plurality of battery cells 12 are placed. The top plate, the two side plates 10, and the two end plates 11 can be detachably connected by bolts, and the bottom plate 1 is detachably connected to the two side plates 10.

[0069] In the above embodiment, the two end plates 11 are bent parts, and their bending angles are opposite. By contacting the battery cells 12 through their bending positions, the battery cells 12 are squeezed, thereby effectively fixing the battery cells 12.

[0070] Please refer to Figure 4 In some embodiments, each of the two side plates 10 is provided with a plurality of fixing holes 13, and the bottom plate 1 is provided with a plurality of connecting blocks 14. When the connecting blocks 14 are located in the fixing holes 13, the bottom plate 1 and the side plates 10 are fixed. Specifically, the connecting blocks 14 are L-shaped structures, and the ends of the connecting blocks 14 are right-angled triangles. Therefore, when they enter the fixing holes 13, they can prevent them from falling off.

[0071] In the above embodiment, the connecting block 14 and the base plate 1 are integrally formed.

[0072] Optionally, in some embodiments, the cover plate 2 is provided with a plurality of connection holes 15, the bottom plate 1 is provided with connection grooves 16 corresponding to the connection holes 15, and the side plate 10 is provided with a plurality of slots corresponding to the positions of the connection holes 15. That is, the cover plate 2 is fixedly connected to the slots of the side plate 10 through the connection holes 15 by means of cable ties, and the connection holes 15 on the bottom plate 1 can limit the cable ties, thereby improving the fixing firmness of the cover plate 2. By directly connecting the cover plate 2 to the side plate 10 through cable ties, the connection and fixation of the entire wiring harness assembly and the battery module can also be increased, which can further reduce costs.

[0073] In other embodiments, the cover plate 2 and the base plate 1 are detachably connected by a snap-fit ​​mechanism.

[0074] Optionally, in some embodiments, by changing the number and arrangement of different cells, the lithium battery module can be compatible with various capacity and voltage configurations, meeting specific voltage and capacity requirements, thus increasing the versatility and market competitiveness of the lithium battery module product. By combining multiple cells together and optimizing their design, the lithium battery module can achieve higher output power and capacity while maintaining a smaller size and weight, making it easy to carry.

[0075] Optionally, in some embodiments, among a plurality of cells arranged in a single row, an insulating sheet is provided between adjacent cells. Adhesive is applied to both sides of each cell in a "Z" shape, and the insulating sheet is fixed to the middle of adjacent cells using adhesive. Insulating sheets are also provided on the inner sides of the end plate 11 and the side plate 10; that is, insulating sheets are also fixed between the end plate 11 and the cells, and between the side plate 10 and the cells, using adhesive. In addition, insulating sheets are also fixed to the bottom of several cells using adhesive; that is, insulating sheets are adhered to the bottom of the cell integration assembly. The above-mentioned arrangement of multiple insulating sheets effectively prevents safety hazards caused by cell leakage, thereby ensuring the safety performance of the lithium battery module.

[0076] Optionally, in some embodiments, since the performance of lithium batteries is significantly affected by temperature, especially at low temperatures where the electrochemical reaction rate inside the cell decreases, leading to problems such as reduced battery capacity, decreased output power, and reduced charging efficiency, a heating film is also provided on the side plate 10 of the lithium battery module. The heating film is made by sequentially stacking a PI film and a heating chip, as well as a PI film and double-sided adhesive. Two prominent white heating film lines extend from the heating film to facilitate the installation of the control terminal wiring harness. When the lithium battery module is under low-temperature conditions, the heating film provides the necessary heat to the lithium battery module, thereby achieving a more suitable operating temperature range. Through the structural design of the heating film, the battery module's endurance and normal operating performance under low-temperature conditions are ensured, while also improving the efficiency and extending the lifespan of the lithium battery module.

[0077] In other words, the key point of this utility model is that: when the main wire 4 is placed in the wire groove 102, one end of several branch wires 5 is electrically connected to the main wire 4, and the other end of several branch wires 5 is electrically connected to the corresponding battery plate 3. That is to say, several battery plates 3 can be electrically connected to the main wire 4 through several branch wires 5, and several battery cells 12 can be electrically connected. One end of the main wire 4 is electrically connected to the wire harness port 6, which is installed on the base plate 1. It can be charged and discharged with the outside through the wire harness port 6. After the base plate 1 and the cover plate 2 are fixedly connected, since the main wire 4 is located in the wire groove and the battery plate 3 is located in the fixing groove 9, the positions of the main wire 4 and the battery plate 3 can be fixed to ensure the normal operation of the circuit. Therefore, this device can greatly reduce costs by replacing the FPC board with wires. When the wire is damaged, only the wire needs to be replaced, and the entire wire harness assembly does not need to be replaced, which helps to reduce the cost of repair.

[0078] In addition to the circuit components applicable to various types of engineering machinery disclosed in the above embodiments, this utility model also provides a battery module including the above-mentioned circuit components applicable to various types of engineering machinery. For the structure of other parts of the battery module, please refer to the prior art, which will not be repeated here.

[0079] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0080] The foregoing has provided a detailed description of a circuit component and battery module suitable for various types of engineering machinery provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A circuit assembly suitable for various types of engineering machinery, used to electrically connect several battery cells (12), characterized in that, include: A base plate (1) and a cover plate (2), the cover plate (2) being connected to the base plate (1), the base plate (1) having a wire groove (102) and a plurality of placement grooves (101) penetrating the base plate (1), the wire groove (102) being connected to the plurality of placement grooves (101), and a bar plate (3) being installed in each of the plurality of placement grooves (101), the bar plate (3) being electrically connected to the battery cell (12); A main wire (4) and several branch wires (5) are provided. The main wire (4) is installed in the wire groove (102). One end of each of the several branch wires (5) is electrically connected to the main wire (4). The other end of each of the several branch wires (5) is electrically connected to the corresponding plate (3). One end of the main wire (4) is electrically connected to a wire harness port (6). The wire harness port (6) is installed on the base plate (1).

2. The circuit assembly applicable to various types of engineering machinery according to claim 1, characterized in that, The placement groove (101) is provided with a positioning protrusion (104), and the bar piece (3) is provided with a bending groove (301) that cooperates with the positioning protrusion (104). When the positioning protrusion (104) is placed in the bending groove (301), the position of the bar piece (3) is fixed.

3. The circuit assembly applicable to various types of engineering machinery according to claim 1, characterized in that, The bar plate (3) includes two outgoing bar plates (302) and several connecting bar plates (303). The outgoing bar plate (302) includes a bent lead-out portion (304). When the cover plate (2) is connected to the bottom plate (1), the lead-out portion (304) is exposed outside the cover plate (2).

4. The circuit assembly applicable to various types of engineering machinery according to claim 3, characterized in that, The base plate (1) is provided with at least two external protrusions (7), and the lead-out portions (304) of the two export plates (302) are respectively located on the corresponding external protrusions (7). A protective sleeve (8) is detachably installed on the external protrusions (7).

5. The circuit assembly applicable to various types of engineering machinery according to claim 1, characterized in that, The base plate (1) is provided with a fixing groove (9), and the wire harness port (6) is placed in the fixing groove (9) to fix the wire harness port (6) to the base plate (1).

6. The circuit assembly applicable to various types of engineering machinery according to claim 1, characterized in that, The conductor groove (102) is provided with a number of fasteners (103) for fixing the main conductor (4).

7. The circuit assembly applicable to various types of engineering machinery according to claim 6, characterized in that, The fixing member (103) is a protrusion fixed in the wire groove (102). When the main wire (4) contacts the protrusion, the main wire (4) is fixed.

8. A battery module, characterized in that, The circuit assembly for various types of engineering machinery as described in any one of claims 1-7 further includes two side plates (10), two end plates (11), and a plurality of battery cells (12), wherein the two side plates (10) and the two end plates (11) are fixedly connected to form a cavity for accommodating the plurality of battery cells (12), and the circuit assembly for various types of engineering machinery is located on top of the plurality of battery cells (12) and connected between the two side plates (10).

9. The battery module according to claim 8, characterized in that, Both side plates (10) are provided with a number of fixing holes (13), and the base plate (1) is provided with a number of connecting blocks (14). When the connecting blocks (14) are located in the fixing holes (13), the base plate (1) and the side plates (10) are fixed.

10. The battery module according to claim 9, characterized in that, The cover plate (2) is provided with a number of connection holes (15), the bottom plate (1) is provided with connection grooves (16) corresponding to the connection holes (15), and the side plate (10) is provided with a number of slots corresponding to the positions of the connection holes (15).

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