Clamp-free series-parallel large battery test module

Abstract

The utility model discloses a clamp-free series-parallel large battery test module. The clamp-free series-parallel large battery test module comprises a groove body, a plurality of battery clamping grooves are uniformly formed in the groove body, battery contact heads are arranged on the two sides of the battery clamping grooves respectively, a wire groove is formed in the top of the groove body, a wire is installed in the wire groove, a positive electrode connector and a negative electrode connector are installed on one side of the groove body, and the positive electrode connector and the negative electrode connector are connected through a wire. And the positive electrode connector and the negative electrode connector are respectively connected with the corresponding battery contact heads through the wires. According to the clamp-free series-parallel connection large battery test module provided by the utility model, the groove body is arranged, the plurality of battery clamping grooves are formed in the groove body, the battery contact heads are arranged on the two sides of the battery clamping grooves, and the battery contact heads are connected into a battery test circuit in a series / parallel connection manner, so that the requirements of large-scale battery test are met, the efficiency is higher, and the test time is shortened. And in addition, the battery fixing mode is simple, energy is saved, and the environment is protected.

Description

Technical Field

[0001] This utility model relates to the field of battery testing module technology, and in particular to a fixture-free series-parallel large battery testing module. Background Technology

[0002] Lithium-ion batteries, characterized by high energy density, long lifespan, and low self-discharge rate, have become an indispensable key technology in modern society. Research and production of lithium-ion batteries require testing various performance parameters, especially electrochemical performance. Traditional small coin cells have very low capacity, making it difficult to effectively evaluate electrode material performance. Ah-level pouch cells require supporting equipment for processes such as stacking, welding, packaging, and electrolyte injection. Large-size batteries, with capacities between traditional coin cells and Ah-level pouch cells, offer simpler manufacturing processes and can be assembled in a glove box, making them very convenient. With the increasing demand for high-energy cells in the new energy market, the demand for Ah-level large-size batteries is also rising. Increasing the capacity of large-size batteries to the Ah level requires stacking multiple layers of electrodes internally, which drastically increases the complexity of the battery assembly process.

[0003] Traditional battery testing modules can only perform charge and discharge tests on a single large battery, which is inefficient and cannot adjust the number of batteries to be tested according to the user's testing needs.

[0004] Therefore, it is necessary to provide a fixture-free series-parallel large battery testing module to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a fixture-free series-parallel large battery testing module that can achieve higher efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A fixture-free series-parallel large battery testing module includes: a tank with multiple battery slots evenly distributed on it; battery contact heads on both sides of each battery slot; a wire groove on the top of the tank; wires installed in the wire groove; a positive terminal connector and a negative terminal connector installed on one side of the tank; and the positive terminal connector and the negative terminal connector connected to the corresponding battery contact heads via wires. An elastic sheet is installed inside each battery slot.

[0008] Preferably, the conductors are arranged in series.

[0009] Preferably, the conductors are arranged in parallel.

[0010] Preferably, an alarm light is installed on one side of the battery slot.

[0011] Preferably, the tank body has a continuous mounting hole, and four support legs are installed at the bottom of the tank body.

[0012] Preferably, a cooling fan is installed below the battery slot.

[0013] Preferably, a positioning protrusion is installed in the battery slot, and a positioning hole is provided on the elastic sheet.

[0014] Preferably, the battery contact head includes a base plate, a contact plate, a first screw, and a second screw.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) This utility model sets up a groove and opens multiple battery slots on the groove, installs battery contact heads on both sides of the battery slots, and connects the battery outlets to the battery test circuit in a series / parallel manner, which meets the needs of large-scale battery testing, is more efficient, improves the flexibility and applicability of testing, and the battery fixing method is simple, energy-saving and environmentally friendly.

[0017] (2) By installing an alarm light on one side of the battery slot, this utility model can easily distinguish the quality of each battery so as to make different processing.

[0018] (3) By setting mounting holes and support legs, this utility model can improve the heat dissipation speed of the battery during testing and avoid excessive temperature rise of the battery, which may lead to danger.

[0019] (4) By installing a cooling fan under the battery slot, this utility model can help improve the heat dissipation speed of the battery during testing, reduce the battery temperature, and improve the test safety.

[0020] (5) By setting positioning protrusions and positioning holes, this utility model can conveniently and accurately fix the elastic sheet in the battery slot. Attached Figure Description

[0021] Figure 1 Figure 1. Parallel large battery test module diagram in the fixture-free series-parallel large battery test module provided by this utility model;

[0022] Figure 2 A diagram of the series-connected large battery test module in the fixture-free series-parallel large battery test module provided by this utility model;

[0023] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure;

[0024] Figure 4 for Figure 2 A top-view structural diagram;

[0025] Figure 5 for Figure 1 A top-view structural diagram;

[0026] Figure 6 This is a schematic diagram of the elastic sheet structure;

[0027] Figure 7 This is a schematic diagram of the battery contact head.

[0028] The corresponding names of the reference numerals in the attached drawings are as follows: 1-slot, 2-battery slot, 3-battery contact head, 4-wire slot, 5-positive connector, 6-negative connector, 7-elastic sheet, 8-positive wire, 9-negative wire, 10-series wire, 11-alarm light, 12-mounting hole, 13-cooling fan, 14-support leg, 15-protrusion, 16-positioning hole, 30-base plate, 31-contact plate, 32-first screw, 33-second screw. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0030] Example 1:

[0031] like Figure 1-7 As shown, this utility model provides a clamp-free series-parallel large battery test module, comprising: a tank 1, on which multiple battery slots 2 are evenly distributed; battery contact heads 3 are provided on both sides of each battery slot 2, with the positions of the battery contact heads 3 corresponding to the positive / negative terminals of the square large battery, thus facilitating the connection of the large battery to the test circuit; the test circuit is remotely connected to a charging and discharging device, which is used to charge and discharge the large battery for testing; a wire groove 4 is provided at the top of the tank 1, and wires are installed in the guide groove 4, including positive wires 8, negative wires 9, and series wires 10; the wire groove 4 is designed according to the wiring of series / parallel circuits, therefore the wire groove 4 can be divided into series wire groove 4 and parallel wire groove 4; whether it is a series wire groove 4 or a parallel wire groove 4, it is used to place the wires of the series / parallel circuit; a positive connector 5 and a negative connector 6 are installed on one side of the tank 1; and an elastic sheet 7 for fixing the large battery is installed in the battery slot 2. Figure 1 and Figure 5Taking the parallel wire groove 4 as an example, positive wire 8 and negative wire 9 are installed in the guide groove 4. One end of the positive wire 8 is connected to the positive connector 5, and the other end is connected to the battery contact head 3 on one side of the battery slot 2 through multiple wires. One end of the negative wire 9 is connected to the negative connector 6, and the other end is connected to the battery contact head 3 on the other side of the battery slot 2 through multiple wires. When the large battery is inserted into the battery slot 2, the elastic sheet 7 is squeezed. Through the stress of the elastic sheet 7 itself, the large battery is fixed in the battery slot 2. The positive and negative terminals of the large battery abut against the battery contact heads 3 on both sides of the battery slot 2, so that the large battery is connected in parallel to the circuit. The number of large batteries is unlimited (not exceeding the number of battery slots 2). Then, the positive connector 5 and the negative connector 6 are connected to the charging and discharging equipment, and the corresponding test parameters are adjusted, such as setting different charging and discharging current and voltage parameters, to measure the charging and discharging efficiency, capacity retention rate and other indicators of the battery. In cycle life testing, the mold can complete multiple cycle tests according to preset charge-discharge cycle numbers and parameters, recording test data in real time, providing an accurate basis for battery life assessment. Figure 2 and Figure 4 Taking the series-connected wire slot 4 as an example, the positive wire 8 is connected to a battery contact 3 at the farthest end of the battery slot 2, while the negative wire 8 is connected to the nearest battery contact 3. The two battery contacts 3 between the battery slots 2 are connected using a series wire 10. A certain number of large batteries are then inserted into the battery slots 2. If no batteries are inserted into the battery slots 2, the battery contacts 3 on both sides of the battery slot 2 are short-circuited using wires, thereby connecting multiple large batteries in series into the test circuit for testing. The testing process will not be described in detail here. Both of the above test modules can easily increase or decrease the number of batteries tested according to the user's testing needs, breaking through the limitations of traditional molds and meeting the needs of large-scale battery testing. At the same time, customers can choose series or parallel functions according to their needs, providing diversified test solutions for different testing scenarios and improving the flexibility and applicability of testing. It is worth noting that fixing the batteries with the elastic sheet 7 eliminates the need for electric clamps and avoids additional energy consumption, which is more conducive to energy saving and meets the requirements of environmental protection and cost reduction.

[0032] By setting up a slot 1 and opening multiple battery slots 2 on the slot 1, installing battery contact heads 3 on both sides of the battery slots 2, and connecting the battery outlets 3 to the battery testing circuit in a series / parallel manner, the needs of large-scale battery testing are met, the efficiency is higher, the flexibility and applicability of the test are improved, and the battery fixing method is simple, energy-saving and environmentally friendly.

[0033] Example 2:

[0034] like Figure 1 and Figure 5As shown, an alarm light 11 is installed on one side of the battery slot 2. The alarm light 11 is connected to the parallel branch of the battery slot 2, so that the battery inserted into the battery slot 2 is connected in series with the alarm light 11, and then in parallel with the batteries in other battery slots 2. The alarm light 11 is a low-power product, and its power consumption is negligible. During the discharge test, if the brightness of the alarm light 11 is significantly lower than that of other alarm lights 11, it means that the battery in the corresponding battery slot 2 reaches the test limit earlier than the other batteries. It can also test the limits of each battery to see if they meet the standards, making it convenient for testers to mark and process unqualified batteries in a timely manner. Of course, a dual-color alarm light 11 can also be used. During charging, the first one to change from red to green indicates that the battery reaches the limit first. In this way, the quality of each battery can also be judged.

[0035] By installing an alarm light 11 on one side of the battery slot 2, it is easy to distinguish the quality of each battery so that they can be handled accordingly.

[0036] Example 3:

[0037] like Figure 1-2 As shown, a continuous mounting hole 12 is provided on the tank body 1, and four support legs 14 are installed at the bottom of the tank body 1. The support legs 14 are positioned above the support surface such as the table, allowing external air to enter the mounting hole 12 through the bottom of the tank body 1. The mounting hole 12 is connected to the battery slot 2. When the battery is being tested, a large amount of heat is generated. The hot air rises, and the cold air enters the mounting hole 12 from the bottom to dissipate heat from the battery. The design of the mounting hole 12 also ensures that most of the battery is exposed to the air after it is inserted into the battery slot 2, which is more conducive to its heat dissipation.

[0038] By providing mounting holes 12 and support legs 14, the heat dissipation speed of the battery during testing can be improved, preventing the battery temperature from rising excessively and causing danger.

[0039] Example 4:

[0040] like Figure 3-5 As shown, a cooling fan 13 is installed below the battery slot 2. The outer shell of the cooling fan 13 is fixedly connected to the inner wall of the mounting hole 12. The cooling fan 13 is powered by an external power source. When in use, after the cooling fan 13 is started, it can accelerate the airflow speed in the battery slot 2 and the mounting hole 12, thereby accelerating the heat dissipation speed of the battery.

[0041] By installing a cooling fan 13 below the battery slot 2, it is possible to improve the heat dissipation speed of the battery during testing, reduce the battery temperature, and improve testing safety.

[0042] Example 5:

[0043] like Figure 3 and Figure 6 As shown, an integrated positioning protrusion 15 is installed in the battery slot 2, and a positioning hole 16 is provided on the elastic sheet 7. During installation, the positioning hole 16 of the elastic sheet 7 is aligned with the positioning protrusion 15, so that the positioning protrusion 15 is inserted into the positioning hole 16, and then the elastic sheet 7 is positioned and bonded to the battery slot 2.

[0044] By setting the positioning protrusion 15 and positioning hole 16, the elastic piece 7 can be easily and accurately fixed in the battery slot 2.

[0045] Example 6:

[0046] like Figure 7 As shown, the battery contact head 3 includes a base plate 30, and a contact plate 31 is welded or otherwise mounted on one side of the base plate 30 to fix the two and enable them to conduct electricity. The contact plate 31 is bent and elastic, and part of it protrudes into the battery slot 2 to abut against the two poles of the battery. A first screw 32 and a second screw 33 are installed on the 30. The first screw 32 fixes the base plate 30 to the slot 1, while the second screw 33 is used to connect the wires in the circuit.

[0047] By providing a battery contact head 3 that includes a base plate 30, a contact plate 31, a first screw 32, and a second screw 33, it is possible to easily connect the battery and the wires.

[0048] Working Principle: Taking the parallel-connected wire slot 4 as an example, a large battery is inserted into the battery slot 2, and the elastic sheet 7 is pressed to fix the large battery in place. The positive and negative terminals of the large battery abut against the battery contact heads 3 on both sides of the battery slot 2, connecting the large batteries in parallel into the circuit. The number of large batteries is unlimited. Then, the positive terminal connector 5 and the negative terminal connector 6 are connected to the charging and discharging equipment, and the corresponding test parameters are adjusted, such as setting different charging and discharging current and voltage parameters, to measure the battery's charging and discharging efficiency, capacity retention rate, and other indicators. In cycle life testing, the mold can complete multiple cycle tests according to the preset number of charge and discharge cycles and parameters, recording test data in real time, providing an accurate basis for battery life assessment.

[0049] Taking the series-connected wire slot 4 as an example, the positive wire 8 is connected to a battery contact 3 at the farthest battery slot 2, while the negative wire 8 is connected to the nearest battery contact 3. The two battery contacts 3 between the battery slots 2 are connected, and then a certain number of large batteries are inserted into each battery slot 2. If no battery is inserted into the battery slot 2, the battery contacts 3 on both sides of the battery slot 2 are short-circuited with a wire, and then multiple large batteries are connected in series into the test circuit for testing. The testing process is the same as above and will not be described again here.

Claims

1. A fixture-free series-parallel large battery test module, characterized in that, include: A groove (1) is provided with a plurality of battery slots (2) evenly distributed on the groove (1). A battery contact head (3) is provided on each side of the battery slot (2). A wire groove (4) is provided on the top of the groove (1). A wire is installed in the wire groove (4). A positive terminal connector (5) and a negative terminal connector (6) are installed on one side of the groove (1). The positive terminal connector (5) and the negative terminal connector (6) are connected to the corresponding battery contact head (3) through the wire. An elastic sheet (7) is installed in the battery slot (2).

2. The fixture-free series-parallel large battery test module of claim 1, wherein, The conductors are arranged in series.

3. The fixture-free series-parallel large battery test module of claim 1, wherein, The conductors are arranged in parallel.

4. The fixture-free series-parallel large battery test module of claim 1, wherein, An alarm light (11) is installed on one side of the battery slot (2).

5. The fixture-free series-parallel large battery test module of claim 1, wherein, The groove (1) has mounting holes (12) and four support legs (14) are installed at the bottom of the groove (1).

6. The fixture-free series-parallel large battery test module of claim 1, wherein, A cooling fan (13) is installed below the battery slot (2).

7. The fixture-free series-parallel large battery test module of claim 1, wherein, The battery slot (2) is equipped with a positioning protrusion (15), and the elastic sheet (7) is provided with a positioning hole (16).

8. The fixture-free series-parallel large battery test module of claim 1, wherein, The battery contact head (3) includes a base plate (30), a contact plate (31), a first screw (32), and a second screw (33).

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