Combination structure of storage battery pole group busbar and pole

Abstract

The utility model relates to a storage battery pole group busbar and pole combined structure, which comprises a middle busbar, a middle pole, an end busbar and an end pole, one end of the middle busbar is vertically and integrally connected with the side surface of the middle pole in a cast welding manner, and the end pole is connected with the middle position of the end busbar. The height of the middle busbar is gradually decreased from the end close to the middle pole to the end away from the middle pole, the cross section of the middle busbar is in a shape similar to a Chinese character'ao ', the width of an arc concave face of the upper surface of the middle busbar is gradually decreased from the end close to the middle pole to the end away from the middle pole, and the bottom face of the middle busbar is connected with a plate lug on the middle pole group. And the end busbars are connected with plate lugs on the end plate groups. According to the busbar and pole combined structure, the resistance of the busbar and the pole is reduced, and the voltage drop of the busbar and the pole in the large-current starting and discharging process of the storage battery is reduced, so that the output voltage of the storage battery is improved, and the output power of the storage battery when an engine is started is improved.

Description

Technical Field

[0001] The utility model relates to a combined structure of a battery pole group busbar and a pole, belonging to the technical field of batteries. Background Art

[0002] Starting lead-acid batteries have the characteristics of high output power, that is, when starting the vehicle engine, the battery can output a large current and a high voltage, thereby meeting the requirements of the vehicle engine starting power. With the continuous development of the automobile industry, users have higher and higher requirements for battery output power. In order to meet users' demand for high battery output power, it is necessary to reduce the internal resistance of the battery as much as possible in the design to reduce the voltage loss generated by the battery itself when it outputs power, so as to achieve the purpose of increasing the battery output power. The existing battery busbars are all designed as regular rectangular parallelepiped shapes with the same cross-sectional area, and the current collected by the plate on the busbar gradually increases from the end of the busbar away from the pole to the pole current, resulting in a mismatch between the superposition relationship of the same cross-sectional area and the current. When the battery starts the engine, a large current passes through the busbar, which generates a large voltage drop loss, thereby reducing the output voltage of the battery and reducing the output power of the battery. Similarly, the end pole of the cylindrical structure is connected between the pole group busbar and the battery terminal. The distance from the busbar to the battery terminal is long, and the end pole will also produce a large voltage drop, reducing the output voltage of the battery and reducing the output power of the battery. In addition, the busbar with a square cross-section structure is prone to bending, which may lead to the risk of busbar breakage. Utility Model Content

[0003] In order to overcome the drawbacks of the prior art, the utility model provides a combined structure of a battery pole group bus and pole, wherein the cross section of the middle bus is set to be a "concave" shape, and the thickness gradually decreases from the near end of the middle pole to the far end of the middle pole, which not only reduces the conductive resistance of the middle bus current collection, but also reasonably distributes the lead loss and improves the strength of the bus. In addition to the upper 1 / 3-1 / 4 height of the end pole, which is cylindrical and cooperates with the lead pipe on the battery cover to form a terminal, the lower 2 / 3-3 / 4 height of the end pole adopts a semi-cylindrical structure, which not only reduces the conductive resistance of the end pole, but also increases the connection area between the end pole and the bus, and improves the connection strength between the end pole and the bus.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A combined structure of a battery pole group bus and poles, the combined structure comprising an intermediate bus, an intermediate pole, an end bus and an end pole, one end of the intermediate bus being vertically and integrally cast-welded to the side of the intermediate pole, the end pole being connected to the middle position of the end bus, the thickness of the intermediate bus gradually decreasing from close to the end of the intermediate pole to far away from the end of the intermediate pole, the cross-section of the intermediate bus being shaped like a "concave" character, the width of the arc concave surface of its upper surface gradually narrowing from close to the end of the intermediate pole to far away from the end of the intermediate pole, the bottom surface of the intermediate bus being connected to the plate ear on the intermediate pole group, and the end bus being connected to the plate ear on the end pole group.

[0006] The above-mentioned battery pole group bus and pole combination structure, the lower section of the end pole is set as a semi-cylinder, the upper section is set as a cylinder, the square plane lower end of the semi-cylinder is vertically connected to the side of the end bus, and the upper section of the end pole cooperates with the lead pipe on the battery cover to form the output terminal of the battery.

[0007] In the above-mentioned combined structure of the battery pole group busbar and pole, the ratio of the thickness of the connecting end of the intermediate busbar and the intermediate pole to the thickness away from the intermediate pole end is 1.3-2.0.

[0008] In the above-mentioned battery pole group busbar and pole combination structure, the height of the lower semi-cylinder of the end pole is set to 2 / 3-3 / 4 of the total height of the end pole, and the height of the upper cylinder is set to 1 / 3-1 / 4 of the total height of the end pole.

[0009] The beneficial effects of the utility model are as follows: the thickness of the intermediate busbar of the utility model gradually decreases from the end close to the intermediate pole to the end far away from the intermediate pole, the cross section is set to be a "concave" shape, and the width of the arc concave surface of the upper surface gradually narrows from the end close to the intermediate pole to the end far away from the intermediate pole, which not only reduces the conductive resistance of the busbar current collection, reduces the busbar voltage drop, but also minimizes lead consumption. The setting shape of the end pole increases the conductive cross-sectional area of ​​the end pole, while shortening the distance between the end pole and the end busbar, thereby reducing the conductive resistance of the end pole and the end busbar, and reducing the voltage drop of the end busbar and the end pole. Through the innovative design of the above-mentioned busbar and end pole structure, the output voltage of the battery is improved, the overall output power of the battery is improved, and the user's demand for high-power batteries is better met, which has good social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model will be further described below in conjunction with the accompanying drawings.

[0011] Figure 1 It is a schematic diagram of the structure of the intermediate pole and the intermediate bus bar at different angles of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the end pole and the end bus at different angles;

[0013] Figure 3 This is a schematic diagram of the six-connected structure of a battery pole group;

[0014] In the figure: 1. middle bus; 2. middle pole; 3. end bus; 4. end pole; 5. battery slot. DETAILED DESCRIPTION

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] See also Figure 1 and Figure 2 The utility model discloses a combined structure of a battery pole group bus and pole, comprising an intermediate pole 2 and an intermediate bus 1 arranged on an intermediate pole group, and an end pole 4 and an end bus 3 arranged on an end pole group. One end of the intermediate bus 1 is vertically connected to the side of the intermediate pole 2, and the end pole 4 is integrally connected to the middle position of the end bus 3. The thickness of the intermediate bus 1 gradually decreases from the end close to the intermediate pole to the end far away from the intermediate pole. The ratio of the thickness of the intermediate bus 1 connecting the intermediate pole 2 to the thickness far away from the intermediate pole is 1.3-2.0. The cross section of the intermediate bus 1 is a "concave" shape, and the width of the arc concave surface of the upper surface gradually narrows from the end close to the intermediate pole 2 to the end far away from the intermediate pole, which not only reduces the conductive resistance of the bus current collection, but also minimizes the lead consumption. The lower section of the terminal pole 4 (accounting for 2 / 3-3 / 4 of the total height) is set to a semi-cylindrical shape, and the upper section (accounting for 1 / 3-1 / 4 of the total height) is set to a cylinder. The lower end of the square plane of the semi-cylindrical shape is vertically integrated with the side of the terminal bus 3. The upper section of the cylinder of the terminal pole 4 cooperates with the lead pipe on the battery cover to form the output terminal of the battery. This can increase the conductive cross-sectional area of ​​the terminal pole and shorten the distance between the terminal pole and the terminal bus, thereby reducing the conductive resistance of the terminal pole and the terminal bus, and reducing the voltage drop of the terminal bus and the terminal pole.

[0017] The combined structure of the pole group busbar and pole of the starting lead-acid battery of the utility model is completed according to the following steps:

[0018] According to the pole group busbar and pole structure, make the corresponding busbar and pole casting and welding mold;

[0019] In accordance with the casting welding process requirements, molten lead alloy is injected into the casting welding mold cavity of the busbar and the pole;

[0020] Move the pole group to the top of the busbar and pole casting and welding mold, with the plate ears on the pole group facing the busbar mold cavity surface vertically, and then move the pole group downward under the automatic operation of the driving mechanism, and the plate ears penetrate into the lead alloy liquid in the busbar mold cavity by 2 to 3 mm. Under the high temperature heating of the lead alloy liquid, the surface of the plate ears and the Russian lead alloy liquid in the busbar are fused together;

[0021] Under the action of circulating cooling water in the busbar and pole casting and welding mold, the lead alloy liquid in the mold and the mold cavity gradually cools and solidifies;

[0022] When the lead alloy liquid in the mold and the cavity cools and solidifies for 10 to 20 seconds, the pole group together with the cast busbar, reinforcing ribs and poles are automatically removed from the cavity under the action of the driving structure;

[0023] Under the action of the driving structure, the cast-welded pole groups are sequentially loaded into the battery tank 5;

[0024] See also Figure 3 , load the pole groups into the battery tank, and weld the positive middle pole of one single pole group and the negative middle pole of another single pole group together through the through-wall welding hole on the battery tank 5, so that the six single pole groups are connected in series;

[0025] After the pole groups are connected in series, the battery cover and the 6-piece battery tank are sealed together, and then the terminal poles and the lead pipes on the battery cover are welded together to complete the battery assembly;

[0026] 9. The assembled battery is charged after adding sulfuric acid electrolyte to produce a finished battery that can be used.

Claims

1. A battery pole group busbar and pole combination structure, characterized in that: The combined structure comprises an intermediate busbar (1), an intermediate pole (2), an end busbar (3) and an end pole (4); one end of the intermediate busbar (1) is vertically connected to the side of the intermediate pole (2); the end pole (4) is connected to the middle position of the end busbar (3); the height of the intermediate busbar (1) gradually decreases from the end close to the intermediate pole to the end far away from the intermediate pole; the cross section of the intermediate busbar (1) is a "concave"-shaped; the width of the arc concave surface of the upper surface gradually narrows from the end close to the intermediate pole (2) to the end far away from the intermediate pole; the bottom surface of the intermediate busbar (1) is connected to the plate ear on the intermediate pole group; the end busbar (3) is connected to the plate ear on the end pole group; The lower section of the terminal pole (4) is configured as a semi-cylinder, and the upper section is configured as a cylinder. The lower end of the square plane of the semi-cylinder is vertically connected to the side of the terminal bus (3). The upper section of the cylinder of the terminal pole (4) cooperates with the lead pipe on the battery cover to form the output terminal of the battery. The ratio of the thickness of the connecting end of the intermediate busbar (1) and the intermediate pole (2) to the thickness of the end away from the intermediate pole is 1.3-2.0; The height of the lower semi-cylindrical body of the terminal pole (4) is set to 2 / 3-3 / 4 of the total height of the terminal pole, and the height of the upper cylindrical body is set to 1 / 3-1 / 4 of the total height of the terminal pole.

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