Low-temperature discharging device for lithium ion storage battery pack

Abstract

The utility model discloses a low-temperature discharge device of a lithium ion storage battery pack, which relates to the technical field of low-temperature battery discharge and comprises a case, a display screen is mounted on one side of the case, a discharge switch is mounted on one side of the case relative to the position below the display screen, a power connection port is arranged on one side of the case relative to the discharge switch, and the power connection port is connected with the display screen. The low-temperature discharging device comprises a case, a power connection port is formed in the case, a button is installed at the position, opposite to one side of the power connection port, of the case, two sockets are installed at the position, opposite to the lower portion of the power connection port, of the case, a limiting structure is arranged on the upper surface of the case and comprises a bottom plate, and the lower surface of the bottom plate is fixedly connected with the case. The effect of limiting the positive and negative electrode connectors connected in the discharge test of the lithium ion storage battery pack is achieved, and the problems that the positive and negative electrode connectors are long and need to be inserted and pulled independently in the case transferring process, the transferring tedious operation is improved, and the overall bulk performance of the device is improved are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-temperature battery discharge, in particular to a low-temperature discharge device for a lithium-ion battery pack. Background Art

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. Under low temperature conditions, the performance of lithium-ion batteries may be affected, such as reduced discharge capacity and increased internal resistance. Therefore, the battery pack will be placed in a low-temperature box, and then discharged after the positive and negative electrodes are connected through a low-temperature discharge tester to detect its discharge characteristics, stability, endurance and other parameters at low temperatures. It is usually composed of a chassis, an internal data acquisition and monitoring module, a display screen, a discharge switch, an electrical port, buttons, sockets, etc.

[0003] The above-mentioned and existing related technologies often have the following defects: the low-temperature discharge detector usually needs to be used in conjunction with a low-temperature box. After the battery pack is placed in the low-temperature box, it is connected to the external chassis socket through the positive and negative connectors to perform discharge detection. However, during the transportation of the chassis, the positive and negative connectors in the socket need to be pulled out and placed in other ways. The positive and negative connectors are long, so they need to be pulled out and carried again each time they are transported, which increases the cumbersomeness of personnel carrying the device and reduces the overall uniformity of the device.

[0004] To this end, we propose a low-temperature discharge device for lithium-ion battery packs. Utility Model Content

[0005] The purpose of the present utility model is to provide a low-temperature discharge device for a lithium-ion battery pack to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A low-temperature discharge device for a lithium-ion battery pack comprises a chassis, a display screen is installed on one side of the chassis, a discharge switch is installed on one side of the chassis at a position relative to below the display screen, a power port is provided on the chassis at a position relative to one side of the discharge switch, a button is installed on the chassis at a position relative to one side of the power port, two sockets are installed on the chassis at a position relative to below the power port, a limiting structure is provided on the upper surface of the chassis, the limiting structure comprises a bottom plate, the lower surface of the bottom plate is fixedly connected to the chassis, the upper surface of the bottom plate is fixedly connected to a rotating frame, the surface of the rotating frame is rotatably connected to a rotating plate, a driving rod is threaded through the upper surface of the rotating plate, the lower end of the driving rod is rotatably connected to a limiting frame, a U-shaped plate is fixedly connected to the upper surface of the bottom plate at a position relative to the limiting frame, and an L-shaped plate is fixedly connected to the upper surface of the bottom plate.

[0007] The effect achieved by the above components is: it achieves the effect of limiting the positive and negative terminal connectors of the lithium-ion battery pack discharge test connection, thereby avoiding the problem of the positive and negative terminal connectors being long and needing to be plugged and placed separately during the transportation of the chassis, thereby increasing the cumbersome transportation operation and improving the overall bulkiness of the device.

[0008] Preferably, the upper surface of the rotating plate abuts against the short arm of the L-shaped plate, the upper surface of the bottom plate is fixedly connected with a positioning plate, and one side of the rotating plate abuts against the positioning plate.

[0009] The effects achieved by the above components are: the rotating plate rotates to fit the positioning plate, and the positioning plate plays the role of locating the position between the limit frame and the U-shaped plate.

[0010] Preferably, a plurality of winding rods are fixedly connected to the upper surface of the bottom plate relative to the position inside the U-shaped plate, and the arc surfaces of the plurality of winding rods are all slidably connected to the inner wall of the limiting frame.

[0011] The effect achieved by the above components is that the positive and negative electrode connectors are wound on the arc surface of the winding rod, and the winding rod achieves the effect of providing the two positive and negative electrode connectors with neatness in the U-shaped plate.

[0012] Preferably, one side of the U-shaped plate is fixedly connected to a connecting plate, one side of the connecting plate is fixedly connected to a spring, and the other end of the spring is in contact with the rotating plate.

[0013] The effect achieved by the above components is that the rotating plate rotates to squeeze the spring, and the spring plays a role in quickly returning the rotating plate to its original position.

[0014] Preferably, a support structure is provided on one side of the chassis, and the support structure includes a card frame, one side of the card frame is fixedly connected to the chassis, the inner wall of the card frame is slidably connected to a fixed frame, and the upper surface of the fixed frame is fixedly connected to two round tubes, and the two round tubes are both located on one side of the socket.

[0015] The effect achieved by the above components is: it achieves the effect of supporting the connection between the socket and the positive and negative connectors. With the support of each component on the connection, the positive and negative connectors are supported when they are pulled, effectively preventing the connection from bending and causing damage to the surface, thereby improving the service life and safety of the positive and negative connector cables.

[0016] Preferably, an insertion rod is slidably penetrated through the upper surface of the card frame, and the arc surface of the insertion rod is slidably connected to the inner wall of the fixed frame.

[0017] The effect achieved by the above components is: the insertion rod is inserted into the fixed frame through the card frame, and the insertion rod can be disassembled to facilitate personnel to insert the positive and negative terminal connectors.

[0018] Preferably, a sponge cover is fixedly connected to one side of the two circular tubes away from the socket, and the cross-section of the sponge cover is circular.

[0019] The effects achieved by the above components are as follows: the positive and negative connectors move inside the circular tube and fit with the sponge sleeve, and the sponge sleeve further reduces the hardness of the circular tube.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. In the present utility model, by setting the limiting structure, the effect of limiting the positive and negative connectors for the discharge test connection of the lithium-ion battery pack is achieved. By limiting and collecting the positive and negative connectors on the surface of the chassis, it is no longer necessary to plug and unplug the positive and negative connectors during the transportation process, and the centralized unity of the discharge detection tool is improved, reducing redundant and cumbersome operations.

[0022] 2. In the present utility model, by setting the support structure, the effect of supporting the connection between the socket and the positive and negative connectors is achieved. With the support of each component for the connection, when the positive and negative connectors are pulled, the support is provided, effectively preventing the connection from being bent and causing damage to the skin, thereby improving the service life and safety of the positive and negative connector wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 is of the present utility model Figure 1 schematic diagram of the partial structure;

[0025] Figure 3 is a schematic diagram of the structure at the pressing plate of the present utility model;

[0026] Figure 4 is a schematic diagram of the structure at the U-shaped plate of the present utility model;

[0027] Figure 5 is a schematic diagram of the structure at the fixed frame of the present utility model.

[0028] In the figure: 1, chassis; 2, display screen; 3, discharge switch; 4, power connection port; 5, button; 6, socket; 7, limiting structure; 701, bottom plate; 702, rotating frame; 703, rotating plate; 704, driving rod; 705, limiting frame; 706, U-shaped plate; 707, L-shaped plate; 708, positioning plate; 709, winding rod; 710, connecting plate; 711, spring; 8, support structure; 81, clamping frame; 82, fixed frame; 83, circular tube; 84, inserting rod; 85, sponge sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1 The utility model provides a technical solution: a low-temperature discharge device for a lithium-ion battery pack, comprising a chassis 1, a display screen 2 is installed on one side of the chassis 1, a discharge switch 3 is installed on one side of the chassis 1 at a position below the display screen 2, a power port 4 is opened on the chassis 1 at a position on the side of the discharge switch 3, a button 5 is installed on the chassis 1 at a position on the side of the power port 4, and two sockets 6 are installed on the chassis 1 at a position below the power port 4. A limiting structure 7 is provided on the upper surface of the chassis 1, which achieves the effect of limiting the positive and negative terminals of the lithium-ion battery pack discharge test connection, thereby avoiding the problem that the positive and negative terminals are long and need to be plugged and placed separately during the transportation of the chassis 1, thereby increasing the cumbersome transportation operation and improving the overall bulkiness of the device. A supporting structure 8 is provided on one side of the chassis 1, which achieves the effect of supporting the connection between the socket 6 and the positive and negative terminals. With the support of each component on the connection, the positive and negative terminals are supported when they are pulled, effectively preventing the connection from bending and causing damage to the surface, thereby improving the service life and safety of the positive and negative terminal lines.

[0031] The specific configuration and function of the limiting structure 7 and the supporting structure 8 will be described in detail below.

[0032] like Figure 2 and Figure 3 as well as Figure 4 As shown, the limiting structure 7 includes a base plate 701, the lower surface of which is fixedly connected to the chassis 1, the upper surface of the base plate 701 is fixedly connected to a rotating frame 702, the surface of the rotating frame 702 is rotatably connected to a rotating plate 703, the upper surface of the rotating plate 703 is threaded with a driving rod 704, the lower end of the driving rod 704 is rotatably connected to a limiting frame 705, the upper surface of the base plate 701 is fixedly connected to a U-shaped plate 706 relative to the limiting frame 705, the upper surface of the base plate 701 is fixedly connected to an L-shaped plate 707, the upper surface of the rotating plate 703 abuts against the short arm of the L-shaped plate 707, the upper surface of the base plate 701 is fixedly connected to a positioning plate 708, one side of the rotating plate 703 abuts against the positioning plate 708, the rotating plate 703 rotates to fit the positioning plate 708, and the positioning plate 708 plays the role of positioning the position between the limiting frame 705 and the U-shaped plate 706.

[0033] On the upper surface of the bottom plate 701, several winding rods 709 are fixedly connected relative to the position inside the U-shaped plate 706. The arc surfaces of the several winding rods 709 are all slidably connected to the inner wall of the limiting frame 705. The positive and negative connectors are wound around the arc surfaces of the winding rods 709. The winding rods 709 achieve the effect of providing the neatness of the two positive and negative connectors inside the U-shaped plate 706. One side of the U-shaped plate 706 is fixedly connected with a connecting plate 710. One side of the connecting plate 710 is fixedly connected with a spring 711. The other end of the spring 711 abuts against the rotating plate 703. The rotating plate 703 rotates to compress the spring 711, and the spring 711 plays a role in quickly resetting the rotating plate 703.

[0034] As Figure 2 and Figure 5 shown, the support structure 8 includes a clamping frame 81. One side of the clamping frame 81 is fixedly connected to the chassis 1. The inner wall of the clamping frame 81 is slidably connected with a fixed frame 82. The upper surface of the fixed frame 82 is fixedly connected with two round tubes 83. Both of the two round tubes 83 are located on one side of the socket 6. A plug rod 84 slidably penetrates through the upper surface of the clamping frame 81. The arc surface of the plug rod 84 is slidably connected to the inner wall of the fixed frame 82. The plug rod 84 is inserted into the fixed frame 82 through the clamping frame 81. The plug rod 84 plays a role in facilitating the disassembly of the round tubes 83 for personnel to insert the positive and negative connectors. Sponge sleeves 85 are fixedly connected to the sides of the two round tubes 83 far away from the socket 6. The cross section of the sponge sleeve 85 is circular. The positive and negative connectors move inside the round tubes 83 and fit with the sponge sleeves 85. The sponge sleeves 85 play an effect of further reducing the hardness of the round tubes 83.

[0035] Working principle: When low-temperature discharging of the lithium-ion battery pack is required, first, the chassis 1 is transported to the required position. Subsequently, the driving rod 704 is rotated away from the bottom plate 701 through the rotating plate 703. The rotating plate 703 is limited by being pressed against the short arm of the L-shaped plate 707, so that the limiting frame 705 moves from the arc surface of the winding rod 709 through the driving rod 704. The positive and negative connection wires on the arc surface of the winding rod 709 in the U-shaped plate 706 gradually become loose. The winding rod 709 achieves the effect of providing the neatness of the two positive and negative connectors in the U-shaped plate 706. After the limiting frame 705 is lifted to a certain height, the degree of fit between the rotating plate 703 and the short arm of the L-shaped plate 707 decreases. At this time, the spring 711 in the contracted state expands, and the spring 711 plays a role in quickly resetting the rotating plate 703. By means of the connecting plate 710, the rotating plate 703 is extruded, and the rotating plate 703 drives the limiting frame 705 to rotate away from the positioning plate 708 through the driving rod 704. The positioning plate 708 plays a role in positioning the position between the limiting frame 705 and the U-shaped plate 706. After the rotating plate 703 rotates to a certain angle through the rotating frame 702, the positive and negative connectors in the U-shaped plate 706 are exposed. Subsequently, the two positive and negative connection wires are moved out of the U-shaped plate 706 through the winding rod 709. After the connecting heads of the positive and negative connectors are connected to the positive and negative poles of the lithium-ion battery pack through the low-temperature box, the battery pack is cooled by the low temperature of the low-temperature box. Then, the power supply is connected to the chassis 1 through the power connection port 4, and the components in the chassis 1 are turned on by means of the button 5. After the discharge switch 3 is turned on, the chassis 1 controls the discharge of the battery pack through the positive and negative connectors in the socket 6, and the discharge data is displayed on the display screen 2 through the data acquisition and monitoring module in the chassis 1, so as to conduct the test and low-temperature performance evaluation of the battery pack.

[0036] When the positive and negative connectors in the socket 6 need to be replaced, first, the insertion rod 84 is moved away from the fixed frame 82 through the clamping frame 81. After the insertion rod 84 is separated from the inner wall of the fixed frame 82, the fixed frame 82 is moved to drive the round tube 83 away from the socket 6. At this time, the sponge sleeve 85 slides on the surface of the positive and negative connection wires through the round tube 83. Subsequently, after the positive and negative connectors are pulled out of the socket 6 and separated, the positive and negative connectors are separated from the round tube 83. Then, the new positive and negative connectors are respectively inserted into the two round tubes 83 and then inserted into the socket 6. Then, the fixed frame 82 is moved into the clamping frame 81, and the insertion rod 84 is moved again through the clamping frame 81 and inserted into the fixed frame 82. The insertion rod 84 plays a role in facilitating the disassembly of the round tube 83 for personnel to insert the positive and negative connectors. At this time, after the round tube 83 is limited, when the positive and negative connectors are used and moved, the sponge sleeve 85 on the arc surface of the round tube 83 on one side of the socket 6 slides. The sponge sleeve 85 plays a role in further reducing the hardness of the round tube 83, so as to prevent the bending angle at the connection from being too large and being damaged.

[0037] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature discharge device for a lithium-ion battery pack, comprising a chassis (1), characterized in that: One side of the chassis (1) is equipped with a display screen (2). A discharge switch (3) is installed at a position below the display screen (2) on one side of the chassis (1). A power connection port (4) is provided at a position on one side of the chassis (1) relative to the discharge switch (3). A button (5) is installed at a position on one side of the chassis (1) relative to the power connection port (4). Two sockets (6) are installed at a position below the power connection port (4) on the chassis (1). A limiting structure (7) is provided on the upper surface of the chassis (1). The limiting structure (7) includes a bottom plate (701). The lower surface of the bottom plate (701) is fixedly connected to the chassis (1). A rotating frame (702) is fixedly connected to the upper surface of the bottom plate (701). A rotating plate (703) is rotatably connected to the surface of the rotating frame (702). A driving rod (704) is threadedly penetrated through the upper surface of the rotating plate (703). The lower end of the driving rod (704) is rotatably connected to a limiting frame (705). A U-shaped plate (706) is fixedly connected to the upper surface of the bottom plate (701) at a position relative to the limiting frame (705). An L-shaped plate (707) is fixedly connected to the upper surface of the bottom plate (701).

2. The low-temperature discharge device for a lithium-ion battery pack according to claim 1, characterized in that: The upper surface of the rotating plate (703) abuts against the short arm of the L-shaped plate (707). A positioning plate (708) is fixedly connected to the upper surface of the bottom plate (701). One side of the rotating plate (703) abuts against the positioning plate (708).

3. The low-temperature discharge device for a lithium-ion battery pack according to claim 1, wherein: A number of winding rods (709) are fixedly connected to the upper surface of the bottom plate (701) at a position inside the U-shaped plate (706). The arc surfaces of the a number of winding rods (709) are all slidably connected to the inner wall of the limiting frame (705).

4. The low-temperature discharge device for a lithium-ion battery pack according to claim 1, wherein: One side of the U-shaped plate (706) is fixedly connected to a connecting plate (710). One side of the connecting plate (710) is fixedly connected to a spring (711). The other end of the spring (711) abuts against the rotating plate (703).

5. A low-temperature discharge device for a lithium-ion battery pack according to claim 1, characterized in that: A support structure (8) is provided on one side of the chassis (1). The support structure (8) includes a clamping frame (81). One side of the clamping frame (81) is fixedly connected to the chassis (1). A fixed frame (82) is slidably connected to the inner wall of the clamping frame (81). Two round tubes (83) are fixedly connected to the upper surface of the fixed frame (82). Both of the two round tubes (83) are located on one side of the socket (6).

6. The low-temperature discharge device for a lithium-ion battery pack according to claim 5, characterized in that: A plug rod (84) slidably penetrates through the upper surface of the clamping frame (81). The arc surface of the plug rod (84) is slidably connected to the inner wall of the fixed frame (82).

7. The low-temperature discharge device for a lithium-ion battery pack according to claim 5, characterized in that: Sponge sleeves (85) are fixedly connected to one side of both of the two round tubes (83) away from the socket (6). The cross section of the sponge sleeve (85) is annular.

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