Lithium battery pack electrical wiring process control method

Abstract

The invention discloses a lithium battery pack electrical wiring process control method in the technical field of lithium battery production, and the method effectively avoids wiring errors through the steps of determining components of the same model, checking special installation requirements, identifying lead wires and positions of the components, checking identifiers, wiring and the like. And the assembling efficiency and batch production efficiency of the lithium battery pack are improved. The method is simple in principle and easy to operate, the labor intensity of workers is reduced, and the method has high practicability and popularization prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production, and in particular to a method for controlling the electrical wiring process of a lithium battery pack. Background Art

[0002] Lithium-ion batteries have gradually replaced nickel-metal hydride batteries, nickel-cadmium batteries and other batteries due to their high capacity, high energy density, good cycle stability, and portability. They are widely used in electronic equipment, mining machinery, mountaineering equipment, power tools and other fields. In addition, lithium-ion batteries have also become energy storage devices for other unstable clean energy sources (such as solar energy, wind energy, and tidal energy). In recent years, lithium-ion batteries have been widely used in hybrid vehicles, electric vehicles, unmanned transport vehicles and drones.

[0003] With the gradual expansion of the application scope of lithium-ion batteries, the control functions and structural forms of lithium battery packs are becoming more and more complex. The complexity of the control functions of lithium battery packs leads to a large number of internal components. For example, the same type of thermostats are often used in large quantities in the heating control system. Especially when there are multiple heating circuits, electrical wiring errors often occur, causing many avoidable problems such as abnormal functions of lithium battery packs and extended development cycles. Therefore, it is urgent to propose a new process control method to solve this problem. Summary of the invention

[0004] The present invention aims to provide a lithium battery pack electrical wiring process control method to solve the problem that the existing electrical wiring process is prone to electrical wiring connection errors of multiple identical components of the lithium battery pack, thereby reducing the problem of lithium battery pack development.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a lithium battery pack electrical wiring process control method, comprising the following steps:

[0006] S1. When the lithium battery pack is connected electrically, make sure there are components of the same model;

[0007] S2. If there are components of the same model, check whether the components have special installation requirements; if there are no components of the same model, the wiring is completed;

[0008] S3. If there are special installation requirements for components, the component leads and component installation positions should be marked; if there are no special installation requirements for components, the wiring is completed;

[0009] S4. After the identification is completed, check whether the identification corresponds to each other;

[0010] S5. The labels correspond one to one, and the leads of components with the same labels are connected, and the wiring is completed; if the labels do not correspond one to one, re-label them.

[0011] Furthermore, the special installation requirements in step S2 include that the power diode is installed with heat dissipation design, the heat-sensing surface of the thermostat needs to be fixed toward the heating film, the wire detected by the Hall sensor needs to pass through its through hole, and the mark on the Hall sensor is consistent with the discharge current flow direction of the wire.

[0012] Furthermore, in step S3, the label is made of label paper or a label sleeve, the label position of the lead is in the middle of the lead, and the label is movable on the lead.

[0013] Furthermore, in step S3, the component position mark is located near the component, and the component does not block the mark after installation.

[0014] Beneficial effects of the present invention: 1. This method can effectively solve the problem of frequent wiring errors when there are multiple identical components in a lithium battery pack and there are requirements for the installation position, reduce minor problems in the assembly of lithium battery packs, improve the efficiency of lithium battery pack assembly, and shorten the delivery cycle.

[0015] 2. This method has a simple principle and is easy to operate. It reduces the rework workload of lithium battery packs due to electrical wiring problems, reduces the labor intensity of workers, has strong practicality, and has great promotion prospects and social needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a lithium battery pack electrical wiring process control method of the present invention;

[0017] Figure 2 A schematic diagram of assembling multiple lithium battery modules in groups;

[0018] Figure 3 for Figure 2 Circuit diagram of

[0019] Figure 4 for Figure 2 Diagram of the structure of a single module group. DETAILED DESCRIPTION

[0020] The following is further described in detail through specific implementation methods:

[0021] The reference numerals in the drawings of the specification include: lithium battery module 1, heating film 2, partition 3, thermostat 4, lining plate 5.

[0022] The embodiment is basically as shown in the attached Figure 1 As shown: A lithium battery pack electrical wiring process control method, comprising the following steps:

[0023] S1. When the lithium battery pack is connected electrically, make sure there are components of the same model;

[0024] S2. If there are components of the same model, check whether the components have special installation requirements. Special installation requirements include the installation of power diodes for heat dissipation design, the thermostat's heat-sensing surface needs to be fixed toward the heating film, the wires detected by the Hall sensor need to pass through its through holes, and the markings on the Hall sensor are consistent with the discharge current flow direction of the wires; if there are no components of the same model, the wiring is complete;

[0025] S3. Components have special installation requirements. The leads and installation positions of the components are marked with label paper or marking sleeves. The marking position of the leads is in the middle of the leads. The marking is movable on the leads. The component position marking is located near the components. The marking is not blocked after the components are installed. Components have no special installation requirements. The wiring is completed.

[0026] S4. After the identification is completed, check whether the identification corresponds to each other;

[0027] S5. The labels correspond one to one, and the leads of components with the same labels are connected, and the wiring is completed; if the labels do not correspond one to one, re-label them.

[0028] A lithium battery pack consisting of thirty-two lithium battery modules 1 and a heating control system of sixteen loops is taken as an example to illustrate the specific implementation mode of the present method. The lithium battery pack includes a lithium battery module 1, a heating film 2, a partition 3, a lining 5 and a thermostat 4. The heating film 2 is attached to the outer cylindrical surface of the lithium battery cell in the lithium battery module 1, the partition 3 is pressed on the heating film 2, the thermostat 4 and the lining 5 are placed in the partition 3, the thickness of the partition 3 is greater than the combined thickness of the thermostat 4 and the lining 5, and good contact is ensured between the thermostat 4, the lining 5, the heating film 2 and the lithium battery module 1. A heating film 2 is attached to each row of lithium battery cells in the lithium battery module 1, and the spacing between each row of lithium battery cells is greater than the thickness of the heating film 2, ensuring that each heating film 2 only heats one row of lithium battery cells.

[0029] The heating control system of sixteen loops is placed in thirty-two lithium battery modules 1, and each loop is responsible for heating control of two lithium battery modules 1. In order to improve the reliability of the heating loop, two thermostats 4 are connected in series in each loop for heating control. Since the heating film 2 needs to heat each row and each column of the lithium battery module 1, the number of heating films 2 is determined according to the number of rows / columns of lithium batteries. After the heating control system of sixteen loops is placed in thirty-two lithium battery modules 1, the electrical wiring is completed according to the above method, such as Figure 2-4 shown.

[0030] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A lithium battery pack electrical wiring process control method, characterized in that: The following steps are involved: S1. When the lithium battery pack is connected electrically, make sure there are components of the same model; S2. If there are components of the same model, check whether the components have special installation requirements; if there are no components of the same model, the wiring is completed; S3. If there are special installation requirements for components, the component leads and component installation positions should be marked; if there are no special installation requirements for components, the wiring is completed; S4. After the identification is completed, check whether the identification corresponds to each other; S5. The labels correspond one to one, and the leads of components with the same labels are connected, and the wiring is completed; if the labels do not correspond one to one, re-label them.

2. A lithium battery pack electrical wiring process control method according to claim 1, characterized in that: The special installation requirements in step S2 include that the power diode is installed with heat dissipation design, the heat-sensing surface of the thermostat needs to be fixed toward the heating film, the wire detected by the Hall sensor needs to pass through its through hole, and the mark on the Hall sensor is consistent with the discharge current flow direction of the wire.

3. A lithium battery pack electrical wiring process control method according to claim 2, characterized in that: In step S3, the label is made of label paper or label sleeve, the label position of the lead is in the middle of the lead, and the label is movable on the lead.

4. A lithium battery pack electrical wiring process control method according to claim 3, characterized in that: In step S3, the component position mark is located near the component, and the component does not block the mark after installation.

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