A series copper bar structure for energy storage batteries

Abstract

The application relates to a series copper bar structure for an energy storage battery, which comprises a first connecting copper sheet, a second connecting copper sheet and a cut-off bridge electrically connecting the first connecting copper sheet and the second connecting copper sheet, the overcurrent area of the cut-off bridge is smaller than that of the first connecting copper sheet and the second connecting copper sheet; and the cut-off bridge is disconnected when the temperature of the cut-off bridge exceeds a set value. The application has the effect of meeting the rapid cut-off requirement of the energy storage device.

Description

Technical Field

[0001] This application relates to the field of energy storage devices, and more particularly to a series copper busbar structure for energy storage batteries. Background Technology

[0002] Home energy storage devices are essential for many households, especially those powered by solar panels. With the development of new energy vehicles, energy storage battery technology is becoming increasingly mature. In many areas, car batteries discarded from automobiles can also be used as home energy storage devices to power household appliances.

[0003] Home energy storage devices typically use two or more batteries connected in series to form multiple battery packs for power supply, usually using cables to connect these packs. During use, short circuits are a crucial safety concern, and fuses are generally installed in the circuit to prevent them. Therefore, fuses also need to be connected in series with the cables. However, cables are typically thin, making them prone to heat generation. While fuses provide overload protection by melting and breaking when the current abnormally rises to a certain level or temperature, ensuring safe circuit operation, their inertia is paramount.

[0004] During the operation of energy storage devices, batteries, which store a large amount of energy, require traditional fuses to sense overload current before they can be triggered to blow, which is insufficient to meet the requirements for rapid circuit breaking. Therefore, a structure is needed to replace or optimize existing general fuses and series cables. Summary of the Invention

[0005] To meet the requirement of rapid circuit breaking in energy storage devices, this application provides a series copper busbar structure for energy storage batteries.

[0006] The series copper busbar structure for energy storage batteries provided in this application adopts the following technical solution:

[0007] A series copper busbar structure for an energy storage battery includes a first connecting copper sheet, a second connecting copper sheet, and a circuit breaker bridge electrically connecting the first connecting copper sheet and the second connecting copper sheet. The current-carrying area of ​​the circuit breaker bridge is smaller than the current-carrying area of ​​the first connecting copper sheet and the second connecting copper sheet. When the temperature of the circuit breaker bridge exceeds a set value, the circuit breaker bridge disconnects.

[0008] By adopting the above technical solution, the circuit is simplified and streamlined. The circuit breaker bridge serves as both a cable connector and a fuse opener. By using copper busbars to replace the connecting cables and fuses, the traditional fuse, which requires an overload current to trigger melting under abnormal high temperatures such as short circuits and thermal runaway, is eliminated. The circuit breaker bridge in this application can complete the circuit breaking operation in a short time using high temperature without an overload current, effectively protecting the circuit, reducing safety hazards, and improving safety.

[0009] Preferably, the circuit breaker is a fused bridge, and the current-carrying area of ​​the fused bridge is smaller than the current-carrying areas of the first connecting copper sheet and the second connecting copper sheet. When the temperature of the fused bridge exceeds a set value, the fused bridge melts.

[0010] By adopting the above technical solution, the fuse bridge will immediately melt after a short circuit or high temperature, thereby disconnecting the circuit, protecting the circuit, and reducing safety hazards. Directly using the fuse bridge makes the structure simple and the cost low. After melting, a new good fuse bridge can be replaced, making installation convenient and quick.

[0011] Preferably, the fused bridge has recessed textures or areas.

[0012] By adopting the above technical solutions, the recessed textures or areas can help the fused bridge break.

[0013] Preferably, the circuit breaker is a temperature-sensitive deformation bridge, and the current-carrying area of ​​the temperature-sensitive deformation bridge is smaller than the current-carrying areas of the first connecting copper sheet and the second connecting copper sheet; the temperature-sensitive deformation bridge includes a deformation part and an interlocking part, one end of the deformation part is electrically connected to the first connecting copper sheet, the interlocking part is provided with an interlocking groove, and the end of the deformation part away from the first connecting copper sheet is embedded in the interlocking groove; the interlocking part is electrically connected to the second connecting copper sheet; when the temperature of the deformation part exceeds a set value, the temperature-sensitive deformation bridge deforms and disengages from the interlocking connection part.

[0014] By adopting the above technical solution, overload current is not required for judgment. For example, in the event of a short circuit, the temperature-sensitive deformation bridge can be subjected to high temperature within a short time, causing it to deform immediately and disengage from the interlocking connection, thus completing the circuit breaking operation. This effectively protects the circuit, reduces safety hazards, and improves safety. After the circuit breaking operation is completed and the staff has finished the maintenance, the temperature-sensitive deformation bridge can be restored to its original state and continue to be used as a circuit breaking bridge for circuit protection without replacement, saving costs.

[0015] Preferably, the deformable portion includes an elastic conductive support region and a plurality of conductive expansion regions disposed on one side of the elastic conductive support region. The conductive expansion regions expand when heated to the point that they press against each other, causing the elastic conductive support region to bend and detach from the fitting portion.

[0016] By adopting the above technical solution, the conductive expansion area is heated and expands to squeeze each other, so that the elastic conductive support area bends, thereby causing the deformed part to disengage from the fitting part and realizing the circuit breaking operation.

[0017] Preferably, a temperature sensor is provided on the temperature-sensitive deformation bridge, and the temperature sensor is electrically connected to an external control device; when the temperature detected by the temperature sensor exceeds a set value, the external control device outputs an alarm signal to an external alarm device.

[0018] By adopting the above technical solution, temperature sensing can be used to determine whether a short circuit has occurred, thereby promptly reminding staff to check for open circuits and disconnect the power supply for circuit inspection.

[0019] Preferably, a fuse is connected in series on the temperature-sensitive deformation bridge.

[0020] By adopting the above technical solution, the fuse serves as a further protection for the temperature-sensitive deformation bridge, thus compensating for its shortcomings. The fuse is only used when the temperature-sensitive deformation bridge fails and the circuit cannot be disconnected, so the fuse does not need to be replaced every time.

[0021] Preferably, the fused bridge is a copper sheet integrally formed with the first connecting copper sheet and the second connecting copper sheet, and the width of the copper sheet of the fused bridge is smaller than the width of the first connecting copper sheet and the second connecting copper sheet.

[0022] By adopting the above technical solutions, copper has a relatively low resistivity and good conductivity. The one-piece molding design facilitates production. The narrower the width of the fused bridge design, the greater the resistance, making it more sensitive to temperature and thus facilitating breakage.

[0023] Preferably, the first connecting copper sheet and the second connecting copper sheet are provided with mounting holes.

[0024] By adopting the above technical solution, the mounting holes facilitate the installation of electrical connections for the copper busbar structure.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The heat generated by a short circuit or abnormal high temperature in the circuit directly causes the series copper busbar structure to break the circuit, instead of breaking the circuit directly through the feedback of overload current. This saves feedback time, improves the efficiency of circuit breaking, ensures circuit safety, and has a simple structure, streamlined circuit, and saves costs.

[0027] 2. The fused copper busbar has an optimized structure, making it easy to install and replace, and is easy to manufacture and use;

[0028] 3. The temperature-sensitive deformation-sensitive broken bridge structure can be reused, which helps save costs, and there are also fuses for further protection, reducing safety hazards. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0030] Figure 2 This is a schematic diagram of the first case of the recessed texture in Embodiment 2 of this application;

[0031] Figure 3 This is a schematic diagram of the second type of recessed texture in Embodiment 2 of this application;

[0032] Figure 4 This is a schematic diagram of the first case of the recessed area in Embodiment 2 of this application;

[0033] Figure 5 This is a schematic diagram of the second case of the recessed area in Embodiment 2 of this application;

[0034] Figure 6 This is a schematic diagram of the copper busbar structure in the connected state according to Embodiment 3 of this application;

[0035] Figure 7 This is a schematic diagram of the open circuit state of the copper busbar structure in Embodiment 3 of this application;

[0036] Figure 8 This is a schematic diagram of the overall structure of Embodiment 4 of this application;

[0037] Figure 9 This is a schematic diagram of the overall structure of Embodiment 5 of this application.

[0038] Reference numerals: 1. First connecting copper sheet; 2. Second connecting copper sheet; 3. Fuse bridge; 4. Mounting hole; 5. Recessed texture; 6. Recessed area; 7. Deformation part; 8. Fitting part; 9. Elastic conductive support area; 10. Conductive expansion area; 11. Fitting groove; 12. Temperature sensor; 13. Fuse. Detailed Implementation

[0039] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0042] Example 1;

[0043] Reference Figure 1 A series copper busbar structure for energy storage batteries includes a first connecting copper sheet 1, a second connecting copper sheet 2, and a circuit breaker bridge electrically connecting the first connecting copper sheet 1 and the second connecting copper sheet 2. The current-carrying area of ​​the circuit breaker bridge is smaller than the current-carrying area of ​​the first connecting copper sheet 1 and the second connecting copper sheet 2; when the temperature of the circuit breaker bridge exceeds a set value, the circuit breaker bridge disconnects. The on / off state of the circuit breaker bridge is directly determined by temperature, thereby achieving timely circuit breaking, which is beneficial for circuit protection and meets the requirement of rapid circuit breaking.

[0044] The first connecting copper sheet 1 and the second connecting copper sheet 2 are square or round copper sheets, or other shapes of copper sheets. This embodiment uses a square copper sheet as an example. The first connecting copper sheet 1 and the second connecting copper sheet 2 are two copper sheets of the same size, and a circular mounting hole 4 is opened at the center of the first connecting copper sheet 1 and the second connecting copper sheet 2. The mounting hole 4 is fitted onto the positive or negative terminal of the battery pack, so that the first connecting copper sheet 1 and the second connecting copper sheet 2 are electrically connected to the positive or negative terminal of the battery pack.

[0045] In this embodiment, the circuit breaker is a fused bridge 3, which is a rectangular copper sheet integrally formed with the first connecting copper sheet 1 and the second connecting copper sheet 2. The width of the copper sheet in the fused bridge 3 is smaller than the width of the first connecting copper sheet 1 and the second connecting copper sheet 2. In this embodiment, the width of the fused bridge 3 is taken as one-quarter the width of the first connecting copper sheet 1. Therefore, the current-carrying area of ​​the fused bridge 3 is smaller than that of the first connecting copper sheet 1 and the second connecting copper sheet 2. When the temperature of the fused bridge 3 exceeds a set value, the fused bridge 3 automatically melts. When a short circuit occurs or the circuit is subjected to abnormally high temperatures, the fused bridge 3 will immediately melt, thereby disconnecting the circuit, protecting the circuit, and reducing safety hazards. Using the fused bridge 3 directly results in a simple structure and low cost. After melting, a new fused bridge 3 can be easily and quickly replaced. Copper was chosen as the fuse because it has a low resistivity and good conductivity. The one-piece molding design facilitates production. The narrower fusion bridge design is used, as a narrower fusion bridge results in higher resistance and greater sensitivity to temperature, which facilitates breakage.

[0046] The implementation principle of a series copper busbar structure for energy storage batteries in this application embodiment is as follows: An integrally molded copper busbar structure serves both as a connector for series connection of the battery pack and as a circuit breaker in place of fuse 13. This simplifies the circuit, making it more streamlined. Furthermore, by using the copper busbar to replace the connecting cables and fuse 13, the problem of traditional fuse 13 requiring an overload current to trigger melting is solved. Therefore, it effectively protects the circuit, reduces safety hazards, and improves the safety of the battery pack. After maintenance, a new copper busbar structure can be directly replaced, and installation is convenient and quick, improving work efficiency. The melted copper busbar can also be recycled and reused, which helps save costs.

[0047] Example 2;

[0048] Example 2 is basically the same as Example 1 in structure, except that the structure of the fused bridge 3 is different:

[0049] A series copper busbar structure for energy storage batteries includes a first connecting copper plate 1, a second connecting copper plate 2, and a circuit breaker bridge electrically connecting the first connecting copper plate 1 and the second connecting copper plate 2. The current-carrying area of ​​the circuit breaker bridge is smaller than the current-carrying area of ​​the first connecting copper plate 1 and the second connecting copper plate 2; when the temperature of the circuit breaker bridge exceeds a set value, the circuit breaker bridge disconnects. The on / off state of the circuit breaker bridge is directly determined by temperature, thereby achieving timely circuit breaking, which is beneficial for circuit protection and meets the requirement of rapid circuit breaking.

[0050] The first connecting copper sheet 1 and the second connecting copper sheet 2 are square or round copper sheets, or other shapes of copper sheets. This embodiment uses a square copper sheet as an example. The first connecting copper sheet 1 and the second connecting copper sheet 2 are two copper sheets of the same size, and a circular mounting hole 4 is opened at the center of the first connecting copper sheet 1 and the second connecting copper sheet 2. The mounting hole 4 is fitted onto the positive or negative terminal of the battery pack, so that the first connecting copper sheet 1 and the second connecting copper sheet 2 are electrically connected to the positive or negative terminal of the battery pack.

[0051] In this embodiment, the circuit breaker is a fused bridge 3, which is a rectangular copper sheet integrally formed with the first connecting copper sheet 1 and the second connecting copper sheet 2. The width of the copper sheet in the fused bridge 3 is smaller than the width of the first connecting copper sheet 1 and the second connecting copper sheet 2. In this embodiment, the width of the fused bridge 3 is taken as one-quarter the width of the first connecting copper sheet 1. Therefore, the current-carrying area of ​​the fused bridge 3 is smaller than that of the first connecting copper sheet 1 and the second connecting copper sheet 2. When the temperature of the fused bridge 3 exceeds a set value, the fused bridge 3 automatically melts. When a short circuit occurs or the circuit is subjected to abnormally high temperatures, the fused bridge 3 will immediately melt, thereby disconnecting the circuit, protecting the circuit, and reducing safety hazards. Using the fused bridge 3 directly results in a simple structure and low cost. After melting, a new fused bridge 3 can be easily and quickly replaced. Copper was chosen as the fuse because it has a low resistivity and good conductivity. The one-piece molding design facilitates production. The narrower fusion bridge design is used, as a narrower fusion bridge results in higher resistance and greater sensitivity to temperature, which facilitates breakage.

[0052] In Example 2, the fused bridge 3 is provided with recessed textures or areas.

[0053] Among them, the recessed texture 5 has several styles:

[0054] The first type: Reference Figure 2 The texture consists of straight grooves on both sides or one side of the fuse bridge 3. The straight grooves can be set perpendicular to the length direction of the fuse bridge 3, or they can be set at a small acute angle, such as 30°.

[0055] The second method: Reference Figure 3 The texture consists of curved concave patterns on both sides or one side of the fused bridge 3. The shape of the curve can be arc-shaped, wavy, circular, or spiral, etc.

[0056] Among them, the recessed area 6 has several styles:

[0057] The first type: Reference Figure 4 The recessed area is in the middle of the circuit breaker, and the copper sheet becomes thinner on both sides or one side. The thickness of the recessed area is half the thickness of other parts of the circuit breaker 3.

[0058] The second method: Reference Figure 5 The recessed area is the middle of the broken bridge, and there are recessed gaps on both sides of the copper sheet, or on the sides. The gaps can be arc-shaped gaps, triangular gaps, or gaps of other shapes.

[0059] The implementation principle of a series copper busbar structure for energy storage batteries in this application embodiment is as follows: the recessed texture and the recessed area are designed to reduce the thickness or width of the middle part of the fuse bridge 3, thereby facilitating the rapid breakage of the fuse bridge 3 and thus improving the safety of the circuit.

[0060] Example 3;

[0061] Reference Figure 6 and Figure 7 The structure of Example 3 is basically the same as that of Example 1, except that the structure and materials of the broken bridge are different:

[0062] A series copper busbar structure for energy storage batteries includes a first connecting copper plate 1, a second connecting copper plate 2, and a circuit breaker bridge electrically connecting the first connecting copper plate 1 and the second connecting copper plate 2. The current-carrying area of ​​the circuit breaker bridge is smaller than the current-carrying area of ​​the first connecting copper plate 1 and the second connecting copper plate 2; when the temperature of the circuit breaker bridge exceeds a set value, the circuit breaker bridge disconnects. The on / off state of the circuit breaker bridge is directly determined by temperature, thereby achieving timely circuit breaking, which is beneficial for circuit protection and meets the requirement of rapid circuit breaking.

[0063] The first connecting copper sheet 1 and the second connecting copper sheet 2 are square or round copper sheets, or other shapes of copper sheets. This embodiment uses a square copper sheet as an example. The first connecting copper sheet 1 and the second connecting copper sheet 2 are two copper sheets of the same size, and a circular mounting hole 4 is opened at the center of the first connecting copper sheet 1 and the second connecting copper sheet 2. The mounting hole 4 is fitted onto the positive or negative terminal of the battery pack, so that the first connecting copper sheet 1 and the second connecting copper sheet 2 are electrically connected to the positive or negative terminal of the battery pack.

[0064] The circuit breaker in Example 3 is a temperature-sensitive deformation bridge, wherein the current-carrying area of ​​the temperature-sensitive deformation bridge is smaller than the current-carrying area of ​​the first connecting copper sheet 1 and the second connecting copper sheet 2.

[0065] The temperature-sensitive deformation bridge includes a deformation portion 7 and a fitting portion 8, both made of conductive material. The deformation portion 7 is generally cuboid in shape, with one end electrically connected to the first connecting copper sheet 1 along its length. In this embodiment, the deformation portion 7 is welded to the first connecting copper sheet 1, and the other end is used for electrical connection with the fitting portion 8. The fitting portion 8 is generally square in shape, with a U-shaped fitting groove 11 formed on one side of the fitting portion 8 near the deformation portion 7. The end of the deformation portion 7 away from the first connecting copper sheet 1 is embedded in the fitting groove 11. The fitting portion 8 is electrically connected to the second connecting copper sheet 2, and the fitting portion 8 is integrally formed or welded to the second connecting copper sheet 2.

[0066] To achieve the deformation function of the deformation section 7, the deformation section 7 specifically includes an elastic conductive support area 9 and multiple conductive expansion areas 10 disposed on one side of the elastic conductive support area 9. The elastic conductive support area 9 is made of an elastic conductive material, with one end electrically connected to the first connecting copper sheet 1 and the other end inserted into the fitting groove 11. The conductive expansion areas 10 are multiple expansion strips with certain gaps, arranged along the length of the elastic conductive support area 9. When the expansion strips are heated and expand, they deform by mutual compression, causing the elastic conductive support area 9 to bend towards the side away from the expansion strips, thereby causing the end of the elastic conductive support area 9 to disengage from the fitting part 8, achieving the circuit breaking operation.

[0067] The implementation principle of a series copper busbar structure for energy storage batteries in this embodiment is as follows: In this embodiment, when the temperature of the deformable part 7 exceeds a set value, which is consistent with the set value in embodiments 1-2, the end of the temperature-sensitive deformation bridge detaches from the interlocking connection after deformation and bending. Overload current is not required as a basis for judgment. When a short circuit or abnormally high temperature occurs, the temperature-sensitive deformation bridge can deform under high temperature for a short time, thereby detaching from the interlocking connection and completing the circuit breaking operation. Moreover, after the circuit breaking operation, once the temperature recovers after the maintenance is completed, the temperature-sensitive deformation bridge can return to its original shape and continue to be used as a circuit breaking bridge for the protection circuit, without the need to replace the copper busbar connectors, thus saving costs.

[0068] Example 4;

[0069] Reference Figure 8 The structure of Example 4 is basically the same as that of Example 3, except that the structure of the broken bridge is different:

[0070] A series copper busbar structure for energy storage batteries includes a first connecting copper plate 1, a second connecting copper plate 2, and a circuit breaker bridge electrically connecting the first connecting copper plate 1 and the second connecting copper plate 2. The current-carrying area of ​​the circuit breaker bridge is smaller than the current-carrying area of ​​the first connecting copper plate 1 and the second connecting copper plate 2; when the temperature of the circuit breaker bridge exceeds a set value, the circuit breaker bridge disconnects. The on / off state of the circuit breaker bridge is directly determined by temperature, thereby achieving timely circuit breaking, which is beneficial for circuit protection and meets the requirement of rapid circuit breaking.

[0071] The first connecting copper sheet 1 and the second connecting copper sheet 2 are square or round copper sheets, or other shapes of copper sheets. This embodiment uses a square copper sheet as an example. The first connecting copper sheet 1 and the second connecting copper sheet 2 are two copper sheets of the same size, and a circular mounting hole 4 is opened at the center of the first connecting copper sheet 1 and the second connecting copper sheet 2. The mounting hole 4 is fitted onto the positive or negative terminal of the battery pack, so that the first connecting copper sheet 1 and the second connecting copper sheet 2 are electrically connected to the positive or negative terminal of the battery pack.

[0072] In this embodiment, the circuit breaker is a temperature-sensitive deformation bridge, wherein the current-carrying area of ​​the temperature-sensitive deformation bridge is smaller than the current-carrying area of ​​the first connecting copper sheet 1 and the second connecting copper sheet 2.

[0073] The temperature-sensitive deformation bridge includes a deformation portion 7 and a fitting portion 8, both made of conductive material. The deformation portion 7 is generally cuboid in shape, with one end electrically connected to the first connecting copper sheet 1 along its length. In this embodiment, the deformation portion 7 is welded to the first connecting copper sheet 1, and the other end is used for electrical connection with the fitting portion 8. The fitting portion 8 is generally square in shape, with a U-shaped fitting groove 11 formed on one side of the fitting portion 8 near the deformation portion 7. The end of the deformation portion 7 away from the first connecting copper sheet 1 is embedded in the fitting groove 11. The fitting portion 8 is electrically connected to the second connecting copper sheet 2, and the fitting portion 8 is integrally formed or welded to the second connecting copper sheet 2.

[0074] To achieve the deformation function of the deformation section 7, the deformation section 7 specifically includes an elastic conductive support area 9 and multiple conductive expansion areas 10 disposed on one side of the elastic conductive support area 9. The elastic conductive support area 9 is made of an elastic conductive material, with one end electrically connected to the first connecting copper sheet 1 and the other end inserted into the fitting groove 11. The conductive expansion areas 10 are multiple expansion strips with certain gaps, arranged along the length of the elastic conductive support area 9. When the expansion strips are heated and expand, they deform by mutual compression, causing the elastic conductive support area 9 to bend towards the side away from the expansion strips, thereby causing the end of the elastic conductive support area 9 to disengage from the fitting part 8, achieving the circuit breaking operation.

[0075] A temperature sensor 12 is added to the temperature-sensitive deformation bridge. In this embodiment, the temperature sensor 12 is installed in the conductive expansion region 10. Simultaneously, the temperature sensor 12 is electrically connected to an external control device, feeding back the detected real-time temperature to the control device for monitoring. When the temperature detected by the temperature sensor 12 exceeds a set value, it indicates a short circuit or abnormally high temperature in the circuit. Since the external control device is connected to an alarm device, the control device outputs an alarm signal to the external alarm device to alert personnel to promptly check for circuit faults.

[0076] The implementation principle of a series copper busbar structure for energy storage batteries in this application embodiment is as follows: by adding a temperature sensor 12 to the temperature-sensitive deformation bridge, it is possible to indirectly determine whether a short circuit or abnormal high temperature has occurred in the circuit, thereby promptly reminding staff to check the circuit open circuit through external control equipment and alarm equipment, and timely cutting off the power supply for circuit safety inspection.

[0077] Example 5;

[0078] Reference Figure 9The structure of Embodiment 5 is basically the same as that of Embodiment 4, except that the structure of the circuit breaker bridge is different: to further increase the safety of the circuit, a fuse 13 is connected in series on the temperature-sensitive deformation bridge. The fuse 13 can be connected in series between the fitting part 8 and the second connecting copper piece 2, or it can be connected in series between the first connecting copper piece 1 and the deformation part 7. This embodiment takes the example of connecting in series between the fitting part 8 and the second connecting copper piece 2. The fuse 13 has an overall rectangular shape and contains a fusible conductive metal wire inside.

[0079] The implementation principle of a series copper busbar structure for energy storage batteries according to an embodiment of this application is as follows: To prevent the temperature-sensitive deformation bridge from malfunctioning and failing to bend properly for circuit breaking, thus preventing the circuit breaking operation from being completed normally, a fuse 13 is added. The fuse 13 melts upon overload current, ensuring the circuit breaking operation. During use, the fuse 13 is only activated when the temperature-sensitive deformation bridge malfunctions. Therefore, the fuse 13 does not need to be replaced for each circuit breaking operation, saving costs and enhancing the protection of the copper busbar circuit breaking operation, reducing safety hazards.

[0080] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A series copper busbar structure for an energy storage battery, characterized by: The application relates to a temperature sensing deformation bridge, which comprises a first connecting copper sheet (1), a second connecting copper sheet (2) and a circuit breaking bridge electrically connecting the first connecting copper sheet (1) and the second connecting copper sheet (2), wherein the overcurrent area of the circuit breaking bridge is smaller than that of the first connecting copper sheet (1) and the second connecting copper sheet (2); when the temperature of the circuit breaking bridge exceeds a set value, the circuit breaking bridge is broken. The temperature sensing deformation bridge is provided with a deformation part (7) and an embedding part (8), one end of the deformation part (7) is electrically connected to the first connecting copper sheet (1), the embedding part (8) is provided with an embedding groove (11), and the end of the deformation part (7) far from the first connecting copper sheet (1) is embedded into the embedding groove (11); the embedding part (8) is electrically connected to the second connecting copper sheet (2); when the temperature of the deformation part (7) exceeds a set value, the temperature sensing deformation bridge is deformed and separated from the embedding part (8). The deformation part (7) comprises an elastic conductive supporting area (9) and a plurality of conductive expansion areas (10) arranged on one side of the elastic conductive supporting area (9), the elastic conductive supporting area (9) is made of an elastic conductive material, one end of the elastic conductive supporting area (9) is electrically connected to the first connecting copper sheet (1), and the other end is inserted into the embedding groove (11), the conductive expansion areas (10) are a plurality of expansion strips with certain gaps, and the expansion strips are arranged along the length direction of the elastic conductive supporting area (9); the conductive expansion areas (10) are expanded to mutually press the elastic conductive supporting area (9) to be bent and separated from the embedding part (8).

2. The series copper busbar structure for an energy storage battery of claim 1, wherein: The temperature sensing deformation bridge is provided with a temperature sensor (12) electrically connected to an external control device; when the temperature detected by the temperature sensor (12) exceeds a set value, the external control device outputs an alarm signal to an external alarm device.

3. The series copper busbar structure for an energy storage battery of claim 1, wherein: The temperature sensing deformation bridge is provided with a fuse (13) in series.

4. The series copper busbar structure for an energy storage battery of claim 1, wherein: The first connecting copper sheet (1) and the second connecting copper sheet (2) are provided with mounting holes (4).

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