Lead-lithium mixed lithium battery structure

Abstract

The utility model relates to a lead-lithium mixed lithium battery structure which comprises a shell, a main battery pack, an auxiliary battery pack and a blocking part are arranged in the shell, and the blocking part is arranged between the main battery pack and the auxiliary battery pack to block heat transfer. The insulation film and the heat insulation film are sequentially connected to the two sides of the blocking piece from inside to outside. The insulating film is made of a polyethylene material, and the heat insulation film is made of a polypropylene material. According to the utility model, the blocking part is arranged between the main battery pack and the auxiliary battery pack and is used for blocking heat transfer between the main battery pack and the auxiliary battery pack, so that the main battery pack and the auxiliary battery pack do not interfere with each other and are controlled by the overall temperature of the battery.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and particularly relates to a lead-lithium mixed lithium battery structure. Background Art

[0002] Lithium batteries are temporary power sources in uninterruptible power supply systems, and can be started to supply power to the load in conjunction with the inverter when the mains fails. The lead-lithium mixed lithium battery structure is designed based on the concept of battery reuse and has a high cost-effectiveness. It uses new lithium batteries and any of the old lithium batteries, lithium iron phosphate batteries, and lead-acid batteries. It only needs to connect the two in parallel and use the lithium battery priority discharge working mode to achieve alternating power supply; the specific working mode is that the lithium battery is discharged first when the mains power fails, and when the lithium battery current is insufficient to meet the load demand, the lead-acid battery is discharged to supplement the discharge.

[0003] However, due to the separate discharge state between the two different battery packs, the temperature rise of the discharged battery pack will interfere with the other battery pack, causing the other battery pack to heat up before discharge, which is not conducive to the overall temperature control of the battery. Utility Model Content

[0004] The utility model aims to solve the problems of the prior art and provides a lead-lithium mixed lithium battery structure. The specific technical solution is as follows:

[0005] A lead-lithium hybrid lithium battery structure, comprising a shell, in which a main battery pack, a secondary battery pack and a barrier are installed, wherein the barrier is arranged between the main battery pack and the secondary battery pack to block heat transfer, and the barrier comprises a barrier member and an insulating film and a heat-insulating film sequentially connected on both sides of the barrier member from the inside to the outside;

[0006] The insulating film is made of polyethylene, and the heat-insulating film is made of polypropylene.

[0007] Through the above technical solution, by providing a barrier between the main battery pack and the auxiliary battery pack, the heat transfer between the two can be effectively blocked, thereby avoiding interference between the main battery pack and the auxiliary battery pack.

[0008] As a further technical solution of the utility model, the barrier comprises two groups of partitions arranged in parallel and two groups of connectors connected between the two groups of partitions, and the two groups of connectors cooperate with the two groups of partitions to form a temperature-insulating chamber.

[0009] Through the above technical solution, the difficulty of heat transfer is further increased by forming a temperature-insulating chamber.

[0010] As a further technical solution of the utility model, a fixed pressure strip is installed in the shell, and the fixed pressure strip bypasses the upper part of the main battery pack and the auxiliary battery pack to form pressure.

[0011] The above technical solution can prevent the main battery pack and the auxiliary battery pack from shaking after installation.

[0012] As a further technical solution of the utility model, an insulating rubber pad is provided on the inner side of the fixed pressure strip to form indirect contact with the main battery pack and the auxiliary battery pack.

[0013] The above technical solution can prevent the main battery pack and the auxiliary battery pack from directly contacting metal, thereby protecting the battery.

[0014] As a further technical solution of the utility model, one end of the shell has a concave first groove cavity, a pull ring is rotatably connected in the first groove cavity, and the pull ring is arranged in the first groove cavity through a torsion spring.

[0015] As a further technical solution of the utility model, the shell has two groups of concave second grooves on the end surface of the first groove, and both groups of the second grooves are rotatably connected with hook rings, and the hook rings are arranged in the second grooves through a damping shaft.

[0016] The beneficial effects of the utility model are as follows:

[0017] In the present application, a barrier is provided between the main battery pack and the sub-battery pack to block the heat transfer between the main battery pack and the sub-battery pack, so that there is no interference between the main battery pack and the sub-battery pack, and the overall temperature of the battery is controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exploded view of the lead-lithium mixed lithium battery structure is shown;

[0019] Figure 2 A schematic cross-sectional structure diagram of a barrier portion is shown;

[0020] Figure 3 The overall structural schematic diagram of the lead-lithium mixed lithium battery structure is shown.

[0021] Legend:

[0022] 100, shell; 110, main battery pack; 120, auxiliary battery pack; 130, barrier part; 131, barrier member; 1311, partition; 1312, connector; 1313, temperature-insulating chamber; 132, insulating film; 133, thermal insulation film; 140, fixing strip; 150, insulating rubber pad; 160, front panel; 170, fixing frame; 180, first slot; 181, pull ring; 190, second slot; 191, hook ring. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0024] The present application provides a lead-lithium mixed lithium battery structure. By setting a partition between two battery packs, the temperature interference between the two battery packs can be reduced, which is beneficial to the overall temperature control of the battery.

[0025] Figure 1 An exploded view of the lead-lithium mixed lithium battery structure is shown; Figure 2 A schematic cross-sectional structure diagram of a barrier portion is shown; Figure 1 The lead-lithium hybrid lithium battery structure includes a shell 100, in which a main battery pack 110, a secondary battery pack 120 and a barrier 130 are sequentially installed. The barrier 130 is arranged between the main battery pack 110 and the secondary battery pack 120 to block heat transfer. The barrier 130 includes a barrier 131 and an insulating film 132 and a heat-insulating film 133 sequentially connected on both sides of the barrier 131 from the inside to the outside. The insulating film 132 is made of polyethylene and has good insulation performance. The heat-insulating film 133 is made of polypropylene and has good heat insulation and high temperature resistance. It effectively isolates the heat transfer between the secondary battery pack 120 and the barrier 130. The barrier 131 includes two groups of partitions 1311 arranged in parallel and two groups of connecting members 1312 connected between the two groups of partitions 1311. The two groups of connecting members 1312 cooperate with the two groups of partitions 1311 to form a Insulation chamber 1313; by arranging two groups of partitions 1311 at intervals and forming an insulation chamber 1313 between the two groups of partitions 1311, the effect of blocking heat transfer is further improved, and the connector 1312 is made of rubber material, which has poor thermal conductivity and good sealing effect, thereby ensuring the sealing effect of the insulation chamber 1313; a fixed pressure strip 140 is installed in the shell 100, and the fixed pressure strip 140 bypasses the top of the main battery pack 110 and the auxiliary battery pack 120 to form a pressure to ensure that the main battery pack 110 and the auxiliary battery pack 120 do not shake; an insulating rubber pad 150 is provided on the inner side of the fixed pressure strip 140; the insulating rubber pad 150 is arranged between the battery pack and the fixed pressure strip 140 to prevent the battery from directly contacting the metal; a front panel 160 is installed at one end of the shell 100 through a fixing frame 170; the front panel 160 serves as a battery control system for controlling the charging and discharging of the battery.

[0026] Figure 3 The overall structure schematic diagram of the lead-lithium mixed lithium battery structure is shown; Figure 3In the embodiment, one end of the shell 100 has a concave first groove cavity 180, and a pull ring 181 is rotatably connected in the first groove cavity 180; the pull ring 181 can be rotated and unfolded, so that the user can lift the shell 100; and the pull ring 181 can be arranged in the first groove cavity 180 through a torsion spring, and the torsion spring provides a driving force for the pull ring 181, forcing the pull ring 181 to be hidden in the first groove cavity 180 under normal conditions, so as not to interfere with the normal installation of the shell 100; the shell 100 has two groups of concave second groove cavities 190 on the end surface of the first groove cavity 180, and the two groups of second groove cavities 190 are rotatably connected with hook rings 191; the hook ring 191 can be rotated and opened, and the two groups of second groove cavities 190 are arranged at intervals along the length direction of the shell 100, so as to cooperate with equipment such as a crane to stably lift the shell 100; the hook ring 191 can be arranged in the second groove cavity 190 through a damping shaft, that is, the hook ring 191 can maintain the current state after rotation, so as to cooperate with the lifting structure.

[0027] It should be noted that in the present application, the main battery pack 110 is a new lithium battery and the auxiliary battery pack 120 is a lead-acid battery, but the auxiliary battery pack 120 can also be an old lithium battery, a lithium iron phosphate battery, etc. This is not a limitation of the present application.

[0028] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A lead-lithium hybrid lithium battery structure, comprising a housing (100), characterized in that: A main battery pack (110), a secondary battery pack (120) and a barrier (130) are installed in the housing (100); the barrier (130) is arranged between the main battery pack (110) and the secondary battery pack (120) to block heat transfer; the barrier (130) comprises a barrier member (131) and an insulating film (132) and a heat-insulating film (133) sequentially connected on both sides of the barrier member (131) from the inside to the outside; The insulating film (132) is made of polyethylene, and the thermal insulation film (133) is made of polypropylene.

2. The lead-lithium mixed lithium battery structure according to claim 1, characterized in that: The barrier (131) comprises two groups of partitions (1311) arranged in parallel and two groups of connecting members (1312) connected between the two groups of partitions (1311); the two groups of connecting members (1312) cooperate with the two groups of partitions (1311) to form a temperature-insulating chamber (1313).

3. The lead-lithium mixed lithium battery structure according to claim 1 or 2, characterized in that: A fixed pressure strip (140) is installed in the housing (100), and the fixed pressure strip (140) bypasses the main battery pack (110) and the auxiliary battery pack (120) to form a pressure strip.

4. The lead-lithium mixed lithium battery structure according to claim 3 is characterized in that: The inner side of the fixed pressure strip (140) is provided with an insulating rubber pad (150) to form indirect contact with the main battery pack (110) and the auxiliary battery pack (120).

5. The lead-lithium mixed lithium battery structure according to claim 3 is characterized in that: One end of the housing (100) has a first concave groove (180), and a pull ring (181) is rotatably connected in the first groove (180). The pull ring (181) is arranged in the first groove (180) via a torsion spring.

6. The lead-lithium mixed lithium battery structure according to claim 3 is characterized in that: The shell (100) has two groups of concave second grooves (190) on the end surface of the first groove (180), and the two groups of the second grooves (190) are both rotatably connected with hook rings (191), and the hook ring (191) is arranged in the second groove (190) through a damping shaft.

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