High safety power battery with configurable cid and replaceable fuse

Abstract

The utility model discloses a kind of high safety power battery of configuration CID and replaceable fuse, more specifically related to power battery technical field, including shell, the shell inner chamber middle part is fixedly connected with roll core, the input end and output end of the roll core are all fixedly connected with busbar, the upper end of shell is equipped with plastic plate The upper end of plastic plate is equipped with negative electrode upper cover plate, the negative electrode upper cover plate middle part is fixedly connected with negative electrode upper pole, the rivet is equipped with in the left side and right side of negative electrode upper cover plate middle part. The utility model discloses a kind of high safety power battery of configuration CID and replaceable fuse, by setting fuse mechanism, CID can be turned over when battery pressure increases to certain value, turns over, disconnects between battery pole and busbar, cuts off battery current, and simultaneously can release the high-pressure gas generated, prevent battery from exploding, fire and other major abnormalities.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a high-safety power battery equipped with CID and replaceable fuse. Background Technology

[0002] With the increasing global demand for clean energy, the safety and reliability of power batteries, as core components in new energy vehicles and energy storage systems, have become a major concern. In practical applications, power batteries face numerous complex operating conditions and potential risks. Any safety hazard can lead to serious consequences, such as fires and explosions, endangering not only life and property but also hindering the healthy development of the new energy industry. Inside the battery, when abnormal conditions such as overcharging, over-discharging, or short circuits occur, the internal chemical reactions can become uncontrollable, causing a sharp increase in internal pressure and generating large amounts of heat and gas. If these problems are not addressed promptly and effectively, the battery is highly likely to experience thermal runaway, leading to serious accidents such as explosions and fires. To address the problem of excessive internal battery pressure, existing technologies have introduced a CID current cutoff device. When the pressure increases to a certain value, the CID flip plate flips, releasing high-pressure gas and simultaneously cutting off the battery current, effectively preventing major anomalies such as battery explosions and fires.

[0003] As one of the safety protection devices, the fuse will heat up and melt to cut off the current when the internal current of the battery rises abnormally to a certain level.

[0004] However, fuses can also blow abnormally due to factors such as ambient temperature, current fluctuations, aging, and manufacturing defects. This patent features an externally replaceable fuse, which allows for replacement with a new fuse in case of abnormal blowing, preventing the battery from being rendered unusable due to abnormal fuse blowing. Therefore, a high-safety power battery with CID and a replaceable fuse is needed. Utility Model Content

[0005] The main objective of this invention is to provide a high-safety power battery equipped with CID and replaceable fuses, which can effectively solve the above-mentioned problems.

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

[0007] A high-safety power battery with CID and replaceable fuse includes a housing, a winding core fixedly connected to the center of the inner cavity of the housing, a busbar fixedly connected to both the input and output ends of the winding core, a plastic plate mounted on the upper end of the housing, a negative electrode cover plate mounted on the upper end of the plastic plate, a negative electrode upper terminal fixedly connected to the center of the negative electrode cover plate, and rivets mounted on the left and right sides of the center of the negative electrode cover plate.

[0008] A groove is provided on the left side of the negative electrode upper cover plate, and a surface-mount fuse is installed inside the groove. The output end of the upper busbar is fixedly connected to the lower negative electrode post, and the input end of the lower busbar is fixedly connected to the lower positive electrode support plate. The lower part of the inner cavity of the outer shell is fixedly connected to the upper positive electrode support plate. A fuse mechanism is installed on the left side of the upper positive electrode support plate and the lower positive electrode support plate that are close to each other. The middle of the lower end of the outer shell is fixedly connected to the positive electrode post.

[0009] Preferably, the lower ends of both rivets extend through the negative electrode cover plate and the plastic plate on the same side to the outside, and a sealing ring is fixedly connected to the outer surface of both rivets.

[0010] Preferably, a positive electrode plastic plate is fixedly connected to the left and right ends of both the upper positive electrode support plate and the lower positive electrode support plate.

[0011] Preferably, the safety mechanism includes a CID body, two air holes, and a rubber disc. The CID body is welded to the lower left side of the middle portion of the positive electrode lower support plate. The two air holes are opened on the right side of the positive electrode upper support plate and the positive electrode lower support plate. The rubber disc is fixedly connected to the left side of the positive electrode lower support plate. A round tube is fixedly connected to the lower end of the rubber disc. A piston rod is slidably connected to the inner cavity of the horizontal portion of the round tube. A push plate is fixedly connected to the front side of the middle portion of the outer surface of the piston rod. A sealing plate is fixedly connected to the upper end and the lower left side of the push plate. A push plate two is fixedly connected to the front end of the piston rod.

[0012] Preferably, a groove is provided on the side of the inner arc surface of the two air holes that are close to each other, and the horizontal parts of the two sealing plates are slidably connected to the inner cavity of the groove on the same side.

[0013] Preferably, the upper end of the rubber disc extends through the interior of the positive electrode lower support plate to the outside and is connected to the outside, and the CID body is located on the front side of the push plate two.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] During use, this invention features a safety mechanism that allows the CID flip plate to flip when the battery pressure increases to a certain value, disconnecting the connection between the battery terminals and the busbar, cutting off the battery current, and simultaneously releasing the generated high-pressure gas to prevent the battery from exploding, catching fire, or other major malfunctions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the left-side cross-sectional structure of the insurance institution of this utility model;

[0019] Figure 4 This is a top view of the overall structure of this utility model.

[0020] In the diagram: 1. Outer shell; 2. Core; 3. Negative upper terminal post; 4. Positive terminal post; 5. Surface mount fuse; 6. Fuse mechanism; 61. Rubber disc; 62. Round tube; 63. Piston post; 64. Push plate one; 65. Sealing plate; 66. Vent; 67. Slide groove; 68. CID body; 69. Push plate two; 7. Busbar; 8. Positive upper support plate; 9. Positive lower support plate; 10. Negative lower terminal post; 11. Negative upper cover plate. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Example 1, as Figure 1 and Figure 4 As shown, a high-safety power battery with CID and replaceable fuses includes a housing 1. A winding core 2 is fixedly connected to the center of the inner cavity of the housing 1. Busbars 7 are fixedly connected to both the input and output ends of the winding core 2. A plastic plate is installed on the upper end of the housing 1. A negative electrode cover plate 11 is installed on the upper end of the plastic plate. A negative electrode upper terminal post 3 is fixedly connected to the center of the negative electrode upper cover plate 11. Rivets are installed on the left and right sides of the center of the negative electrode upper cover plate 11. A groove is provided on the left side of the upper cover plate 11, and a patch fuse 5 is installed inside the groove. The output end of the upper busbar 7 is fixedly connected to the negative lower terminal post 10, and the input end of the lower busbar 7 is fixedly connected to the positive lower support plate 9. The lower part of the inner cavity of the outer shell 1 is fixedly connected to the positive upper support plate 8. The left side of the positive upper support plate 8 and the positive lower support plate 9 that are close to each other is jointly equipped with a safety mechanism 6. The positive terminal post 4 is fixedly connected to the middle of the lower end of the outer shell 1.

[0023] In the implementation of this utility model, the plastic plate and the negative electrode upper cover plate 11 are first fixedly connected by rivets. Then, the sealing ring set on the outer surface of the rivet is used to insulate the rivet from the negative electrode upper cover plate 11 and the plastic plate. After assembly, the current passes through the positive electrode post 4, the positive electrode upper support plate 8, the fuse mechanism 6, the positive electrode lower support plate 9, the lower busbar 7, the core 2, the upper busbar 7, the negative electrode lower post 10, the surface mount fuse 5, the negative electrode upper cover plate 11 and the negative electrode upper post 3 to achieve conductivity.

[0024] In the above-mentioned surface mount fuse 5, a plug-in design can be adopted. When the fuse blows abnormally due to problems such as ambient temperature, current fluctuations, aging, and manufacturing defects, the fuse leads can be gently grasped with tweezers and pulled out of the slot in the inner cavity of the negative terminal cover plate 11. Then, a new surface mount fuse 5 of the same specification as the original fuse can be selected, its leads aligned with the slot of the mounting base, and slowly inserted to ensure that the fuse leads are in close contact with the slot. During the insertion process, the fuse can be gently shaken to ensure that it is installed in place, thereby facilitating replacement and effectively preventing abnormal battery failure due to abnormal fuse blowing.

[0025] Furthermore, the lower ends of both rivets extend through the negative electrode cover plate 11 and the plastic plate on the same side to the outside, and sealing rings are fixedly connected to the outer surfaces of both rivets.

[0026] Furthermore, positive electrode plastic plates are fixedly connected to the left and right ends of the upper positive electrode support plate 8 and the lower positive electrode support plate 9.

[0027] When the battery experiences abnormal conditions such as overcharging, over-discharging, or short circuit, the internal pressure of the battery will increase. When the pressure increases to a certain value, the internal chemical reaction produces a large amount of gas, and the pressure increases sharply. This causes the internal structure of the fuse mechanism 6 to flip, disconnecting the connection between the positive terminal 4 and the lower busbar 7, cutting off the battery current, and at the same time releasing the generated high-pressure gas through the internal structure of the fuse mechanism 6 to prevent the battery from exploding, catching fire, or other major abnormalities.

[0028] Example 2: In order to achieve the purpose of cutting off the battery current, refer to... Figure 2 and Figure 3 In this scheme, the insurance mechanism 6 includes a CID body 68, two air holes 66, and a rubber disc 61. The CID body 68 is welded to the lower left side of the middle part of the positive electrode lower support plate 9. The two air holes 66 are opened on the right side of the positive electrode upper support plate 8 and the positive electrode lower support plate 9. The rubber disc 61 is fixedly connected to the left side of the positive electrode lower support plate 9. A round tube 62 is fixedly connected to the lower end of the rubber disc 61. A piston column 63 is slidably connected to the inner cavity of the horizontal part of the round tube 62. A push plate 64 is fixedly connected to the front side of the middle part of the outer surface of the piston column 63. A sealing plate 65 is fixedly connected to the upper end and the lower left side of the push plate 64. A push plate 69 is fixedly connected to the front end of the piston column 63.

[0029] Furthermore, each of the two air holes 66 has a groove 67 on the side of its inner arc surface that is close to each other, and the horizontal portions of the two sealing plates 65 are slidably connected to the inner cavity of the groove 67 on the same side.

[0030] Furthermore, the upper end of the rubber disc 61 extends through the interior of the positive electrode lower support plate 9 to the outside and is connected to the outside, and the CID body 68 is located in front of the push plate 69.

[0031] When the battery experiences abnormal conditions such as overcharging, over-discharging, or short circuit, the internal chemical reaction produces a large amount of gas, causing a surge in pressure. This gas then enters the round tube 62 through the rubber disc 61, pushing the piston column 63 forward. This, in turn, drives the push plate 69 forward, pushing the CID body 68. This causes the solder joint at the upper end of the CID body 68 to break, resulting in the CID body 68 flipping over. Consequently, the connection between the positive terminal 4 and the busbar 7 is disconnected, cutting off the battery current.

[0032] Simultaneously, when pusher plate 2 69 pushes CID body 68 to flip, the gas-driven piston column 63 continues to move forward, driving pusher plate 1 64 to move forward, causing it to move the two sealing plates 65 forward in the inner cavity of slide groove 67. This moves the two horizontal sealing plates 65 forward to the front of the inner cavity of slide groove 67, connecting the two vents 66. This allows high-pressure gas to be discharged to the outside through the two vents 66, effectively preventing major abnormalities such as battery explosion and fire.

[0033] The working principle of this utility model is as follows: In the implementation process, the plastic plate and the negative electrode upper cover plate 11 are first fixedly connected by rivets. Then, the sealing ring set on the outer surface of the rivet realizes the insulation between the rivet and the negative electrode upper cover plate 11 and the plastic plate. After the assembly is completed, the current passes through the positive electrode post 4, the positive electrode upper support plate 8, the fuse mechanism 6, the positive electrode lower support plate 9, the lower busbar 7, the core 2, the upper busbar 7, the negative electrode lower post 10, the surface mount fuse 5, the negative electrode upper cover plate 11 and the negative electrode upper post 3 to achieve conductivity.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-safety power battery equipped with CID and replaceable fuse, comprising a casing (1), characterized in that: A core (2) is fixedly connected to the middle of the inner cavity of the outer shell (1). A busbar (7) is fixedly connected to both the input and output ends of the core (2). A plastic plate is installed on the upper end of the outer shell (1). A negative electrode cover plate (11) is installed on the upper end of the plastic plate. A negative electrode upper electrode post (3) is fixedly connected to the middle of the negative electrode cover plate (11). Rivets are installed on the left and right sides of the middle of the negative electrode cover plate (11). The negative electrode upper cover plate (11) has a groove on the left side, and a patch fuse (5) is installed inside the groove. The output end of the upper busbar (7) is fixedly connected to the negative electrode lower post (10), and the input end of the lower busbar (7) is fixedly connected to the positive electrode lower support plate (9). The lower part of the inner cavity of the outer shell (1) is fixedly connected to the positive electrode upper support plate (8). The left side of the positive electrode upper support plate (8) and the positive electrode lower support plate (9) are close to each other and a safety mechanism (6) is installed together. The middle part of the lower end of the outer shell (1) is fixedly connected to the positive electrode post (4).

2. A high-safety power battery with CID and replaceable fuse as described in claim 1, characterized in that: The lower ends of both rivets extend through the negative electrode cover plate (11) and the plastic plate on the same side to the outside, and sealing rings are fixedly connected to the outer surfaces of both rivets.

3. A high-safety power battery with CID and replaceable fuse as described in claim 1, characterized in that: Positive electrode upper support plate (8) and positive electrode lower support plate (9) are both fixedly connected to positive electrode plastic plates at their left and right ends.

4. A high-safety power battery with CID and replaceable fuse as described in claim 1, characterized in that: The insurance mechanism (6) includes a CID body (68), two air holes (66) and a rubber disc (61). The CID body (68) is welded to the lower left side of the middle part of the positive electrode lower support plate (9). The two air holes (66) are opened on the right side of the positive electrode upper support plate (8) and the positive electrode lower support plate (9). The rubber disc (61) is fixedly connected to the left side of the positive electrode lower support plate (9). A round tube (62) is fixedly connected to the lower end of the rubber disc (61). A piston column (63) is slidably connected to the inner cavity of the horizontal part of the round tube (62). A push plate one (64) is fixedly connected to the front side of the middle part of the outer surface of the piston column (63). A sealing plate (65) is fixedly connected to the upper and lower left sides of the push plate one (64). A push plate two (69) is fixedly connected to the front end of the piston column (63).

5. A high-safety power battery with CID and replaceable fuse as described in claim 4, characterized in that: The inner arc surfaces of the two air holes (66) are provided with grooves (67) on the side that are close to each other, and the horizontal parts of the two sealing plates (65) are slidably connected to the inner cavity of the grooves (67) on the same side.

6. A high-safety power battery with CID and replaceable fuse according to claim 4, characterized in that: The upper end of the rubber disc (61) extends through the interior of the positive electrode lower support plate (9) to the outside and is connected to the outside. The CID body (68) is located in front of the push plate two (69).

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