Battery connection system of energy storage battery, energy storage battery device and electric equipment

Abstract

The invention relates to a battery connection system of an energy storage battery, an energy storage battery device and electric equipment. The battery connection system of the energy storage battery comprises a conductive aluminum bar; the conductive aluminum bar comprises a first power connection piece and a second power connection piece; the first power connection part and the second power connection part have a first different specification, and the first different specification is configured to be assembly fool-proof of the battery connection system of the energy storage battery; the first power connection part of the first power connection piece and the second power connection part of the second power connection piece have different lengths. The first power connection part and the second power connection part form an actual difference, and the difference is easy to limit through assembly and is also beneficial for realizing automatic production and detection technology in a matching manner. And at least in the aspects of the first power connection part and the second power connection part, the first power connection part and the second power connection part have the first different specifications to form an asymmetric assembly fool-proof structure, so that the assembly fool-proof structure has the advantage of simple structure, thereby being beneficial to improving the assembly efficiency and reducing poor assembly, and being easy to popularize and use in production.

Description

[0001] This application is a divisional application of Chinese invention patent application filed by the applicant on May 16, 2025, entitled "Battery Connection System for Energy Storage Battery, Energy Storage Battery Device and Electrical Equipment", application number 202510637105.6. Technical Field

[0002] This application relates to the field of batteries, and in particular to battery connection systems, energy storage battery devices, and electrical equipment for energy storage batteries. Background Technology

[0003] The Cells Contact System (CCS) of a battery pack, also known as an integrated busbar, is a key component of the battery system. Specifically, the CCS, or CCS module, is an integrated component used to realize electrical connections and signal transmission between cells within the battery pack, as well as to provide mechanical support and protection for the battery pack. In fields such as grid energy storage and distributed energy storage, the CCS in the battery pack can effectively manage and connect a large number of cells, ensuring the efficient operation and stable power supply of the energy storage system, and helping to improve energy utilization efficiency and grid stability.

[0004] When connecting multiple rows of cells, multiple CCS modules are also set up. During the assembly process, multiple CCS modules are easy to install incorrectly, thus affecting assembly efficiency. Summary of the Invention

[0005] Therefore, it is necessary to provide a battery connection system, an energy storage battery device, and an electrical device for energy storage batteries.

[0006] One embodiment of this application is a battery connection system for an energy storage battery, which includes a conductive aluminum busbar;

[0007] The conductive aluminum busbar includes a first electrical connector and a second electrical connector;

[0008] The first connector and the second connector have a first dissimilar specification, which is configured as a foolproof assembly feature for the battery connection system of the energy storage battery.

[0009] Wherein, the first contact portion of the first contacting component and the second contact portion of the second contacting component have different lengths;

[0010] In the extension direction of the conductive aluminum busbar or in the width direction perpendicular to the extension direction, the length difference between the first contact portion and the second contact portion is greater than a preset value, where the preset value is the sum of the length tolerance of the conductive aluminum busbar and twice the fitting clearance.

[0011] The aforementioned energy storage battery connection system, by designing a first and second contact portion with different lengths, creates a practical difference between the first and second contact components. This difference is easily controlled through assembly and facilitates automated production and testing processes. Furthermore, at least in terms of the first and second contact portions, the first and second contact components have different specifications, forming an asymmetrical assembly error-proofing structure. This results in a simple structure, improving assembly efficiency and reducing assembly defects, thus facilitating widespread adoption in production. Moreover, by setting the length difference between the first and second contact portions to be greater than a preset value, the assembly error-proofing function is more reliably implemented, ensuring assembly effectiveness and effectively avoiding assembly errors caused by length tolerances and fit clearances. This further improves assembly accuracy and reliability, reducing production costs and quality risks associated with assembly errors. Therefore, it enhances the stability and safety of the energy storage battery connection system 200.

[0012] In some embodiments, the first contact is configured as the positive electrode of the conductive aluminum busbar, the second contact is configured as the negative electrode of the conductive aluminum busbar, and the length of the first contact is greater than the length of the second contact.

[0013] In some embodiments, the first contact member and the second contact member have different shapes; or, the first contact portion and the second contact portion have different shapes.

[0014] In some embodiments, the first contactor and the second contactor have different positioning structures, wherein the positioning structure includes a protrusion and a groove.

[0015] In some embodiments, the positioning structure extends through the first and second electrical contacts; or, the positioning structure is located at the edges of the first and second electrical contacts.

[0016] In some embodiments, the first contact portion and the second contact portion have different positioning structures;

[0017] The positioning structure extends through the first power receiving part and the second power receiving part; or the positioning structure is located at the edge of the first power receiving part and the edge of the second power receiving part.

[0018] In some embodiments, the battery connection system of the energy storage battery also includes a circuit board;

[0019] Furthermore, the circuit board has at least two through holes, and the at least two through holes are configured for identification by a charge-coupled device detection device to serve as a foolproof assembly method for the circuit board.

[0020] In some embodiments, at least two of the through holes exhibit different morphologies in different sequences along the extension direction of the conductive aluminum busbar.

[0021] In some embodiments, the through hole includes a first through hole and a second through hole, the first through hole and the second through hole having different numbers, different positional distributions or different specifications, to cooperate with the first electrical connector and the second electrical connector as a foolproof assembly method for the battery connection system of the energy storage battery.

[0022] In some embodiments, the through-hole is configured to expose the explosion-proof valve of the battery cell to which the conductive aluminum busbar is connected.

[0023] In some embodiments, the through-hole includes a first through-hole and a second through-hole, the first through-hole and the second through-hole having different areas to expose different numbers of the explosion-proof valves.

[0024] In some embodiments, the through-hole includes a first through-hole and a second through-hole, the first through-hole being configured to expose the entire explosion-proof valve of the battery cell to which the conductive aluminum busbar is connected.

[0025] In some embodiments, the battery connection system of the energy storage battery further includes an isolation plate disposed on the conductive aluminum busbar.

[0026] In some embodiments, the isolation plate has an isolation shape corresponding to the first and second electrical contacts, the isolation shape being configured to prevent assembly errors in the battery connection system of the energy storage battery.

[0027] In some embodiments, the battery connection system of the energy storage battery further includes a circuit board having at least two through holes, the at least two through holes being configured for identification by a charge-coupled element detection device as a mistaken assembly feature of the circuit board.

[0028] At least one of the through holes is a first through hole, and the first through hole is configured to expose at least two explosion-proof valves of the battery cell connected to the conductive aluminum busbar;

[0029] The isolation plate has a protrusion that is embedded in the first through hole and is configured to isolate the adjacent explosion-proof valve.

[0030] In some embodiments, the circuit board is disposed on the isolation plate and located between the isolation plate and the conductive aluminum busbar.

[0031] In some embodiments, an energy storage battery device includes a battery cell, an end plate, and a battery connection system for the energy storage battery described in any embodiment;

[0032] The conductive aluminum busbar of the battery connection system of the energy storage battery is connected to the electrodes of the battery cell;

[0033] The end plate is provided with a first power base and a second power base;

[0034] The first electrical connector of the conductive aluminum busbar is mounted on the first electrical base, and the second electrical connector of the conductive aluminum busbar is mounted on the second electrical base.

[0035] The first power base and the second power base have different assembly lengths to adapt to the first power receiving part of the first power receiving component and the second power receiving part of the second power receiving component.

[0036] The aforementioned energy storage battery device, by designing a first and second contact portion of different lengths, and cooperating with a first and second contact base of different assembly lengths, creates a sufficient practical difference between the first and second contact components when assembled with the first and second contact bases. This difference is easily defined through assembly and is also conducive to achieving automated production and testing processes. Furthermore, at least in terms of the first and second contact portions, the first and second contact components have firstly different specifications to form an asymmetrical assembly error-proof structure, which is correspondingly adapted to be installed on the first and second contact bases. Therefore, it has the advantage of simple structure, which helps to improve assembly efficiency and reduce assembly defects, and thus is easy to promote and use in production.

[0037] In some embodiments, the end plate is further provided with inserts, and the first power base and the second power base respectively achieve different assembly lengths through different inserts;

[0038] The first power receiving part is disposed on the first power receiving base by means of an insert, and the second power receiving part is disposed on the second power receiving base by means of another insert.

[0039] In some of these embodiments, an electrical device includes the energy storage battery device described in any of these embodiments. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of an embodiment of the energy storage battery device described in this application.

[0042] Figure 2 for Figure 1 A partial structural schematic diagram of the embodiment shown.

[0043] Figure 3 for Figure 1 The illustrated embodiment is shown in an exploded view.

[0044] Figure 4 for Figure 3 A schematic diagram of the structure of the first power connector mounted on the first power base in another direction of the embodiment shown.

[0045] Figure 5 for Figure 3 A schematic diagram of the structure of the second electrical connector mounted on the second electrical base in another direction of the embodiment shown.

[0046] Figure 6 for Figure 1 Another schematic diagram of the embodiment shown.

[0047] Figure 7 for Figure 6 A schematic diagram of an incorrect assembly in the embodiment shown.

[0048] Figure 8 for Figure 3 Another schematic diagram of the embodiment shown.

[0049] Figure 9 for Figure 8 An enlarged schematic diagram of point A in the illustrated embodiment.

[0050] Figure 10 This is a schematic diagram of another embodiment of the energy storage battery device described in this application.

[0051] Figure 11 for Figure 10 The illustrated embodiment is shown in an exploded view.

[0052] Figure 12 for Figure 11 An enlarged schematic diagram of section B in the illustrated embodiment.

[0053] Figure 13 for Figure 10 An assembly diagram of a portion of the structure in the illustrated embodiment.

[0054] Reference numerals: 100, Energy storage battery device; 200, Battery connection system of energy storage battery; 210, Conductive aluminum busbar; 211, First contact component; 212, Second contact component; 213, Intermediate connector; 214, Positioning structure; 221, First contact part; 222, Second contact part; 230, Isolation plate; 231, Protrusion; 240, Wiring harness; 250, Circuit board; 251, First through hole; 252, Second through hole; 260, Extension direction; 270, Width direction; 280, Fixing component; 300, Battery cell; 310, Explosion-proof valve; 320, Electrode; 400, End plate; 410, First end plate; 411, First contact base; 420, Second end plate; 421, Second contact base; 430, Insert; 500, Fastening band; 600, Detection direction; L1, First length; L2, Second length. Detailed Implementation

[0055] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0056] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0057] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0060] This application discloses a battery connection system, an energy storage battery device, and an electrical device for an energy storage battery, which includes some or all of the technical features of the following embodiments. In one embodiment of this application, a battery connection system for an energy storage battery includes a conductive aluminum busbar; the conductive aluminum busbar includes a first contact component and a second contact component; the first contact component and the second contact component have a first dissimilar specification, which is configured as an assembly error prevention mechanism for the battery connection system of the energy storage battery; wherein, the first contact portion of the first contact component and the second contact portion of the second contact component have different lengths. The above-mentioned battery connection system for an energy storage battery, by designing a first contact portion and a second contact portion with different lengths, creates a practical difference between the first contact component and the second contact component, and this difference is easily defined through assembly, which is also beneficial for achieving automated production and testing processes; and at least in terms of the first contact portion and the second contact portion, the first contact component and the second contact component have a first dissimilar specification to form an asymmetrical assembly error prevention structure, thus having the advantage of simple structure, thereby improving assembly efficiency and reducing assembly defects, and thus being easy to promote and use in production. The following is combined Figures 1 to 13 This document provides a detailed description of the battery connection system, energy storage battery device, and electrical equipment for energy storage batteries.

[0061] An energy storage battery is a device that can convert electrical energy into chemical energy for storage, and then convert the chemical energy back into electrical energy for release when needed. In some embodiments, an energy storage battery device 100 is as follows: Figure 1 As shown, it includes a battery cell 300, an end plate 400, and a battery connection system 200 for the energy storage battery, wherein the battery connection system 200 for the energy storage battery is the battery connection system 200 of any embodiment herein. (In conjunction with...) Figure 2 and Figure 3 The conductive aluminum busbar 210 of the battery connection system 200 of the energy storage battery is connected to the electrode 320 of the cell 300; combined with Figure 4 and Figure 5 The end plate 400 is provided with a first power base 411 and a second power base 421; the first power contact 211 of the conductive aluminum busbar 210 is installed on the first power base 411, and the second power contact 212 of the conductive aluminum busbar 210 is installed on the second power base 421; wherein, the first power base 411 and the second power base 421 have different assembly lengths to accommodate the first power contact portion 221 of the first power contact 211 and the second power contact portion 222 of the second power contact 212. This design, by incorporating a first power-connecting part 221 and a second power-connecting part 222 of different lengths, coupled with a first power-connecting base 411 and a second power-connecting base 421 of different assembly lengths, creates a substantial practical difference between the first power-connecting part 211 and the second power-connecting part 212 when assembled with the first power-connecting base 411 and the second power-connecting base 421. This difference is easily defined through assembly and facilitates automated production and testing processes. Furthermore, at least in terms of the first power-connecting part 221 and the second power-connecting part 222, the first power-connecting part 211 and the second power-connecting part 212 have firstly different specifications to form an asymmetrical assembly error-proof structure, which is correspondingly adapted to be installed on the first power-connecting base 411 and the second power-connecting base 421. Therefore, it has the advantage of simple structure, which helps to improve assembly efficiency and reduce assembly defects, and is thus easy to promote and use in production.

[0062] As an example, combined Figure 11 The end plate 400 includes a first end plate 410 and a second end plate 420. The first end plate 410 is provided with a first power-connecting base 411, and the second end plate 420 is provided with a second power-connecting base 421. As an example, the conductive aluminum busbar 210 also includes a plurality of intermediate connectors 213, each intermediate connector 213 being connected to the first power-connecting component 211 and the second power-connecting component 212 respectively. As an example, the first power-connecting component 211, each intermediate connector 213, and the second power-connecting component 212 are connected in series.

[0063] As an example, Figures 1 to 3 In the illustrated embodiment, there are multiple battery cells 300 arranged in a regular pattern; such a regular arrangement of battery cells 300 can also be referred to as a battery cell module. As an example, Figures 1 to 3In the illustrated embodiment, the energy storage battery device 100 further includes a fastening strap 500 for securely binding the battery cell 300 to the end plate 400. As an example, the fastening strap 500 is a steel strap. This design effectively resists the impact and vibration that the battery cell module may encounter during transportation, installation, and use, preventing mechanical impact, collision, and other external forces from damaging the battery cell 300, thereby protecting the battery cell 300 from damage by external mechanical stress and extending the service life of the energy storage battery device 100.

[0064] In some of these embodiments, such as Figure 13 As shown, the end plate 400 is also provided with inserts 430. The first power-connecting base 411 and the second power-connecting base 421 achieve different assembly lengths through different inserts 430. The first power-connecting part 221 is disposed on the first power-connecting base 411 through one insert 430, and the second power-connecting part 222 is disposed on the second power-connecting base 421 through another insert 430. This design, on the one hand, achieves different assembly lengths of the first power-connecting base 411 and the second power-connecting base 421 by using inserts 430, which can more accurately control the installation position of the power-connecting parts, reduce assembly errors, and thus improve assembly efficiency. On the other hand, by adding inserts 430, this embodiment allows for the adaptation to different specifications of power-connecting parts or their connecting parts by replacing or adjusting the inserts without changing the main structure of the end plate 400, thereby enhancing the flexibility and scalability of the energy storage battery device 100. Furthermore, by using inserts 430, this embodiment can simplify the manufacturing process of the end plate 400, thereby reducing the use of complex molds and thus reducing production costs. On the other hand, by using different inserts 430 to achieve an asymmetrical assembly error-proof structure design, it can effectively prevent the incorrect installation of two electrical connectors or two electrical parts, reduce failures caused by assembly errors, improve assembly reliability, and thus improve product reliability.

[0065] In each embodiment, the specification refers to the form factor, which includes shape and size, and may also be called geometric characteristics. For example, in the extension direction 260 of the conductive aluminum busbar 210, the first contact portion 221 and the second contact portion 222 have different lengths; or, along the width direction 270 perpendicular to the extension direction 260, the first contact portion 221 and the second contact portion 222 have different lengths. The first contact base 411 and the second contact base 421 of the end plate 400 have a first different specification corresponding to the first contact member 211 and the second contact member 212.

[0066] In some of these embodiments, such as Figure 3 As shown, the battery connection system 200 of the energy storage battery includes a conductive aluminum busbar 210; combined with Figure 4 and Figure 5The conductive aluminum busbar 210 includes a first contact element 211 and a second contact element 212. The first contact element 211 and the second contact element 212 have a first dissimilar specification, which is configured as an assembly error prevention mechanism for the battery connection system 200 of the energy storage battery. The first contact portion 221 of the first contact element 211 and the second contact portion 222 of the second contact element 212 have different lengths. This design, by designing the first contact portion 221 and the second contact portion 222 with different lengths, creates a practical difference between the first contact element 211 and the second contact element 212. This difference is easily defined through assembly and facilitates automated production and testing processes. Furthermore, at least in terms of the first contact portion 221 and the second contact portion 222, the first contact element 211 and the second contact portion 212 have a first dissimilar specification to form an asymmetrical assembly error prevention structure. Therefore, it has the advantage of simple structure, which helps to improve assembly efficiency and reduce assembly defects, and is thus easy to promote and use in production.

[0067] Thus, when installing the battery connection system 200 of the energy storage battery, the different width structures of the conductive aluminum busbar 210 can achieve the purpose of foolproofing, improving the assembly efficiency and reliability of the battery connection system 200 of the energy storage battery. In some embodiments, such as Figure 2 As shown, in the extending direction 260 of the conductive aluminum busbar 210 or in the width direction 270 perpendicular to the extending direction 260, a combination is made... Figure 4 and Figure 5 The length difference between the first contact portion 221 and the second contact portion 222 is greater than a preset value, which is the sum of the length tolerance of the conductive aluminum busbar 210 and twice the fitting clearance. That is, the battery connection system 200 of the energy storage battery includes a conductive aluminum busbar 210; the conductive aluminum busbar 210 includes a first contact element 211 and a second contact element 212; the first contact element 211 and the second contact element 212 have a first dissimilar specification, which is configured to prevent incorrect assembly of the battery connection system 200 of the energy storage battery; wherein, the first contact portion 221 of the first contact element 211 and the second contact portion 222 of the second contact element 212 have different lengths; and in the extension direction 260 of the conductive aluminum busbar 210 or the width direction 270 perpendicular to the extension direction 260, the length difference between the first contact portion 221 and the second contact portion 222 is greater than a preset value, which is the sum of the length tolerance of the conductive aluminum busbar 210 and twice the fitting clearance. The other embodiments follow the same pattern and will not be described in detail.

[0068] As an example, such as Figure 4 and Figure 5As shown, in the width direction 270, the first contact portion 221 has a first length L1, and the second contact portion 222 has a second length L2. The first length L1 and the second length L2 are set differently, so that the first contact portion 221 and the second contact portion 222 have different lengths. In this embodiment, the extension direction 260 of the conductive aluminum busbar 210 is the same as the extension direction of the circuit board 250, that is, the length direction of the circuit board 250. The width direction 270 is perpendicular to the extension direction 260 and is also the same as the width direction of the circuit board 250. The length difference between the first contact portion 221 and the second contact portion 222 in the extension direction 260 or the width direction 270 helps to make mistake-proof judgments from the length dimension during assembly, thereby increasing the accuracy of assembly. Furthermore, by setting the length difference between the first power contact 221 and the second power contact 222 to be greater than a preset value, the assembly error prevention function can be realized more reliably, ensuring the effectiveness of the assembly. This effectively avoids assembly errors caused by factors such as length tolerance and fit clearance, further improving the accuracy and reliability of the assembly. Consequently, it reduces the production costs and quality risks caused by assembly errors, thus enhancing the stability and safety of the battery connection system 200 of the energy storage battery.

[0069] In some embodiments, the first contact 211 is configured as the positive terminal of the conductive aluminum busbar 210, and the second contact 212 is configured as the negative terminal of the conductive aluminum busbar 210, with the length of the first contact 221 being greater than the length of the second contact 222. This allows for a clear distinction between the positive and negative terminals, and this length difference enables workers or automated equipment to quickly and accurately identify the positive and negative terminals during assembly, avoiding assembly errors caused by polarity confusion. In embodiments where the length difference between the first and second contact 221 is greater than a preset value, this design not only considers the tolerance range during manufacturing but also the possible fitting gaps during assembly, thereby further enhancing the assembly error prevention function. For example, even with manufacturing tolerances and assembly gaps, the significant difference in length between the first and second contact 221 ensures that the positive and negative contact terminals will not be incorrectly interchanged, effectively reducing the risk of assembly errors.

[0070] This embodiment is applied to an automated production line. This length difference can be quickly identified by mechanical or optical inspection equipment, thereby achieving automated assembly and quality inspection. Automated equipment can quickly determine whether electrical connectors are correctly installed based on preset length standards, further improving production efficiency and quality control. Moreover, this mistake-proofing design based on length differences has a simple structure and does not require complex mechanical structures or electronic components to achieve the mistake-proofing function. It can be achieved simply by adjusting the length of the electrical connector, making it easy to implement in existing production processes without the need for additional equipment or complex process modifications, thus reducing production costs.

[0071] In some embodiments, the first contact 211 and the second contact 212 have different shapes. In some embodiments, the first contact portion 221 and the second contact portion 222 have different shapes, that is, the shape difference between the first contact 211 and the second contact 212 is presented through the first contact portion 221 and the second contact portion 222. Exemplarily, the remaining portion of the first contact 211 except for the first contact portion 221 has the same shape as the remaining portion of the second contact 212 except for the second contact portion 222. As an example, the first contact 211 is rectangular and the second contact 212 is trapezoidal, or vice versa; or, the first contact portion 221 is rectangular and the second contact portion 222 is trapezoidal, or vice versa. This design, on the one hand, by designing the first and second electrical connectors 221 with different shapes, allows workers or automated equipment to quickly identify the positive and negative terminals during assembly through the visual difference in shape. This shape difference is more obvious than a simple length difference, further reducing the possibility of assembly errors. On the other hand, besides length differences, shape differences provide another means of error prevention. Even when length differences are insignificant or negligible, shape differences can still ensure the correct installation of the electrical connectors. This multi-dimensional error-proofing design greatly improves the reliability and safety of the system, while also increasing assembly efficiency, especially in large-scale production and automated assembly lines, significantly reducing assembly time.

[0072] For example, the first contact element 211 or its first contact portion 221 has a first shape, and the second contact element 212 or its second contact portion 222 has a second shape, with the first shape and the second shape being different. The first contact base 411 of the end plate 400 has a first shape corresponding to the first contact element 211 or its first contact portion 221, and the end plate 400 and the second contact base 421 have a second shape corresponding to the second contact element 212 or its second contact portion 222. In this way, for applications requiring higher error prevention, more complex shape differences can be designed; for simpler application scenarios, simpler shape differences can be used. This flexibility allows the design to adapt to various different usage environments and needs. Through the shape difference design, safety accidents such as short circuits and overheating caused by incorrect polarity connections can be effectively avoided, thereby improving the overall safety of the system. Moreover, this shape difference-based design can be used in conjunction with other error prevention measures to further improve the error prevention effect of the system. At the same time, this design also facilitates future technology upgrades and expansions, such as adding new error prevention functions or improving existing designs on the existing basis. Furthermore, designs with different shapes can be achieved through simple mold making and processing, without requiring complex mechanical structures or electronic components. This simple design is easy to implement in existing production processes, reducing production costs and process complexity.

[0073] In some of these embodiments, such as Figure 4 and Figure 5 As shown, the first electrical contact 211 and the second electrical contact 212 have different positioning structures 214, wherein the positioning structure includes a protrusion and a groove. Figure 4 and Figure 5 In the illustrated embodiment, the positioning structures 214 of the first contact 211 and the second contact 212 are grooves with different positions, used for positioning and error prevention to ensure accurate installation of the first contact 211 and the second contact 212. In other embodiments not shown, the first contact 211 and the second contact 212 may also have the same positioning structure 214 for positioning purposes. In some embodiments, the positioning structure passes through the first contact 211 and the second contact 212; or, the positioning structure is located at the edge of the first contact 211 and the edge of the second contact 212. Exemplarily, the first contact 211 has a first positioning structure at its edge, and the second contact 212 has a second positioning structure at its edge. The first positioning structure and the second positioning structure have different shapes and an interlocking structure to facilitate manufacturing. For example, the first and second positioning structures, which have interlocking mechanisms, are joined together to form a complete rectangle, rounded rectangle, or other shape, so that the interlocking position at the middle is a seamless integral shape after joining. This reduces the need for molds and allows for rapid manufacturing. This design, on the one hand, ensures accurate positioning of the connector during assembly through the engagement of the protrusions and grooves, reducing assembly errors. Furthermore, the through-type or edge-located positioning structure effectively restricts the movement of the connector during assembly, ensuring its positional accuracy. Therefore, this design is particularly suitable for energy storage battery devices 100 requiring high-precision connections, significantly reducing poor contact or short circuit problems caused by assembly deviations. On the other hand, the protrusion and groove design of the positioning structure makes the assembly process more intuitive and faster. Assembly personnel or automated equipment can complete the assembly through simple alignment operations, further improving the error-proof assembly effect and reducing assembly time and complexity. On the other hand, the through-type positioning structure can provide stronger mechanical stability, ensuring that the electrical connectors will not loosen due to vibration or external force during long-term use. Moreover, the positioning structure located at the edge can effectively prevent the electrical connectors from being misaligned during assembly, further improving the stability and reliability of the system. Therefore, this design is particularly suitable for energy storage battery devices 100 that need to operate in complex environments.

[0074] Specifically, the positioning structure can be disposed at the first contact portion 221 of the first contact member 211 and the second contact portion 222 of the second contact member 212. In some embodiments, the first contact portion 221 and the second contact portion 222 have different positioning structures; wherein, the positioning structure passes through the first contact portion 221 and the second contact portion 222; or, the positioning structure is located at the edge of the first contact portion 221 and the edge of the second contact portion 222. Exemplarily, a first positioning structure is provided at the edge of the first contact portion 221 and a second positioning structure is provided at the edge of the second contact portion 222. The first positioning structure and the second positioning structure are different in shape and have a mutually engaging structure to facilitate manufacturing. The specific beneficial effects are the same as above and will not be repeated here.

[0075] In some of these embodiments, such as Figure 3 or Figure 6 As shown, the battery connection system 200 of the energy storage battery also includes a circuit board 250; and the circuit board 250 has at least two through holes, which are configured for identification by charge-coupled device (CCD) testing equipment to serve as a mistake-proofing mechanism for the assembly of the circuit board 250. This design, on the one hand, facilitates identification by the testing equipment, effectively preventing incorrect orientation or position of the circuit board 250 during assembly, thereby ensuring correct installation of the circuit board 250; and on the other hand, this mistake-proofing design further reduces assembly errors caused by human factors, improving the reliability and consistency of the assembly process. Furthermore, the through holes serve as detection markers, enabling the CCCD testing equipment to quickly and accurately identify the assembly status of the circuit board, reducing testing time and labor costs. Automated testing equipment can utilize these through holes for rapid positioning and testing, improving testing efficiency and reducing quality problems caused by inaccurate testing.

[0076] In some embodiments, at least two through holes exhibit different shapes along different sequences of the extension direction 260 of the conductive aluminum busbar 210. In some embodiments, the through holes include a first through hole 251 and a second through hole 252, which have different numbers, different positional distributions, or different specifications to cooperate with the first electrical connector 211 and the second electrical connector 212, serving as a foolproof assembly feature for the battery connection system 200 of the energy storage battery. This design, by utilizing the differences in the shape of the through holes, effectively prevents the circuit board 250 from being incorrectly installed during assembly, allowing assembly personnel or automated equipment to quickly identify the correct assembly direction, thereby reducing assembly errors. Furthermore, the different shaped through hole design makes the assembly process more intuitive and faster; assembly personnel or automated equipment can complete the assembly through simple alignment operations, reducing assembly time and complexity, further enhancing the foolproof effect. This design also reduces rework and repair time caused by assembly errors, further improving production efficiency. On the other hand, the morphological differences of through holes can be quickly identified by charge-coupled device detection equipment, which is conducive to achieving automated detection. This not only improves detection efficiency but also reduces quality problems caused by inaccurate detection, further improving the quality control level of the production process.

[0077] To enhance safety, in some embodiments, the through-holes are configured to expose the explosion-proof valves 310 of the battery cells 300 connected to the conductive aluminum busbar 210. In some embodiments, the through-holes include a first through-hole 251 and a second through-hole 252, which have different areas to expose different numbers of explosion-proof valves 310. In some embodiments, the through-holes include a first through-hole 251 and a second through-hole 252, where the first through-hole 251 is configured to expose all the explosion-proof valves 310 of the battery cells 300 connected to the conductive aluminum busbar 210, meaning the second through-hole 252 does not need to expose any explosion-proof valves 310. That is, in relevant embodiments of the energy storage battery device 100, the explosion-proof valves 310 of the battery cells 300 are exposed outside the circuit board 250 through the through-holes. This design, by exposing the explosion-proof valve 310 through the through-hole, ensures that the explosion-proof valve 310 can be quickly inspected or maintained when needed, and provides a certain buffer space for the explosion-proof valve 310, thereby reducing the risk of system failure due to explosion-proof valve failure and improving the reliability of the energy storage battery device 100 or the battery connection system 200 of the energy storage battery. On the other hand, the first through-hole 251 and the second through-hole 252 have different areas, which can be flexibly designed according to different battery cell 300 configurations and the number of explosion-proof valves 310, further enhancing the foolproof effect. Moreover, this design reduces rework and maintenance time caused by assembly errors, thereby improving production efficiency.

[0078] Thus, by creating through holes on the circuit board 250, a foolproof design for asymmetrical holes can be achieved, allowing for automatic detection during the assembly process of the energy storage battery connection system 200. An example of photographic detection is given below. In some embodiments, such as... Figure 6 and Figure 7 As shown, the detection system or equipment pre-stores a correctly installed image of the circuit board 250 as a template. Key areas within the template are selected as feature points. The battery connection system 200 of the energy storage battery takes pictures after each circuit board 250 installation process to obtain the current installation image, which is then automatically compared with the template. This, combined with a charge-coupled device (CCD) for judgment, can further improve assembly efficiency. That is, for the same product, presenting different shapes, such as asymmetrical through-hole designs, allows the CCD detection equipment to identify it, serving as a mistake-proofing measure for the assembly of the circuit board 250. As an example, if the battery connection system 200 of the energy storage battery... Figure 6 As shown, proceed to the inspection direction 600. If the installation is deemed correct, the inspection equipment will not issue an alarm or take any action, and the system will proceed normally to the workstation for component welding. If the battery connection system 200 of the energy storage battery is as described... Figure 7 As shown, if the component enters the inspection direction at 60°, it is determined to be an installation error. The inspection equipment will issue an alarm and remove the component, preventing it from proceeding to the welding station. This error-proof structure, combined with asymmetric opening and CCD image recognition detection during CCS installation, prevents incorrectly installed CCSs from reaching the welding station, avoiding unnecessary rework and waste. This improves the assembly efficiency and reliability of CCSs, thereby significantly increasing production efficiency and assembly reliability.

[0079] The following example further illustrates the foolproof design of the battery connection system 200 for the energy storage battery. In each embodiment, the first contact portion 221 and the second contact portion 222 in the battery connection system 200 have different lengths, i.e., different widths are designed as the first foolproof structure. These different widths are matched with the different reserved widths of the positive and negative electrode bases at the corresponding positions of the end plates 400. During installation, these different width structures are matched with the different reserved width structures at the positive and negative electrode base positions of the end plates 400 to achieve foolproof installation, thereby improving installation efficiency and reliability. Thus, the foolproof structure is located on the output positive and negative terminals of the CCS, with different structures corresponding to the two end plates 400, achieving the purpose of foolproof installation.

[0080] For example, such as Figure 13As shown, the first power base 411 is snap-fitted to the first power connector 211 or the first power connector portion 221, and the second power base 421 is snap-fitted to the second power connector 212 or the second power connector portion 222. The first power base 411 and the second power base 421 have different slot sizes, meaning the slot sizes of the first power base 411 and the second power base 421 are different. The first power base 411 is used to install the first power connector portion 221 of the first power connector 211, and the first power connector portion 221 has a first length L1. The second power base 421 is used to install the second power connector portion 222 of the second power connector 212, and the second power connector portion 222 has a second length L2. The first length L1 and the second length L2 are different. It should be noted that since the difference between the first length L1 and the second length L2 is small, for example, on the order of millimeters, therefore... Figure 13 The slots of the first power connector 411 and the second power connector 421 are similar in size. Furthermore, it is understandable that... Figure 13 The slot lengths of the first power-connecting base 411 and the second power-connecting base 421 are respectively labeled as the first length L1 and the second length L2. In actual operation, a fitting clearance is usually required, that is, the slot length of the first power-connecting base 411 is slightly larger than the first length L1, and the slot length of the second power-connecting base 421 is slightly larger than the second length L2, to facilitate assembly while maintaining the foolproof design. In other embodiments not shown in the figure, the first power-connecting base 411 and the second power-connecting base 421 have different slot shapes, or the slot sizes and shapes of the first power-connecting base 411 and the second power-connecting base 421 are different. As an example, the end plate 400 is designed with an asymmetrical shape, for example, the first power-connecting base 411 is rectangular and the second power-connecting base 421 is trapezoidal, or different shaped notches or protrusions are provided on the edge of the end plate 400. This design, together with the first power-connecting component 211 and the second power-connecting component 212, achieves the foolproof function.

[0081] As an example, the CCS or its circuit board 250 may feature an asymmetrical opening structure, i.e., through-holes. This opening structure serves as a second type of foolproof design and exposes the explosion-proof valve 310 of the battery cell 300. The asymmetrical opening structure includes, but is not limited to, inconsistent opening sizes, inconsistent opening shapes, and inconsistent numbers of explosion-proof valves exposed by the opening structure. For example, the CCS may have a large opening exposing all corresponding explosion-proof valves, with a small section left on one side of the large opening for foolproofing or detection purposes.

[0082] In some of these embodiments, such as Figure 8 and Figure 9As shown, the battery connection system 200 of the energy storage battery also includes an isolation plate 230, which is disposed on the conductive aluminum busbar 210. In some embodiments, a circuit board 250 is disposed on the isolation plate 230 and located between the isolation plate 230 and the conductive aluminum busbar 210. That is, for embodiments with a circuit board 250, the isolation plate 230 is disposed on the conductive aluminum busbar 210, and the circuit board 250 is disposed on the isolation plate 230, i.e., the isolation plate 230 is located between the circuit board 250 and the conductive aluminum busbar 210. With this design, the isolation plate 230 disposed on the conductive aluminum busbar 210 can effectively achieve physical isolation, such as preventing spraying, and improve the safety performance of the battery connection system 200 of the energy storage battery; on the other hand, it can fix the position of the conductive aluminum busbar 210, preventing it from shifting or deforming during assembly and use; and furthermore, it provides additional support for the conductive aluminum busbar 210, enhancing the mechanical stability of the battery connection system 200 of the energy storage battery and reducing damage caused by external forces or vibrations.

[0083] In some embodiments, the isolation plate 230 has an isolation shape corresponding to the first power connector 211 and the second power connector 212. This isolation shape is configured to prevent incorrect assembly of the battery connection system 200 of the energy storage battery. This design, where the isolation shape of the isolation plate 230 corresponds to the shapes of the first power connector 211 and the second power connector 212, ensures that the battery can only be installed in the correct manner during assembly. This design uses physical structure to restrict incorrect assembly orientation, thereby effectively preventing short circuits or other electrical faults caused by assembly errors. Furthermore, the isolation plate 230 can also serve as a positioning reference during assembly. Through precise matching of the isolation shape, assembly personnel or automated equipment can quickly identify the correct assembly position, reducing the error rate during assembly. Since the possibility of assembly errors is reduced, the inspection and calibration time after assembly is also reduced accordingly, further improving production efficiency.

[0084] As an example, a spray isolation plate is installed above the CCS to isolate the sprayed electrolyte and prevent its spread. For cases where multiple explosion-proof valves 310 correspond to the same opening, a protrusion can be provided on the side of the spray isolation plate facing the battery cell to separate adjacent explosion-proof valves.

[0085] In some embodiments, combined Figure 10 and Figure 11The battery connection system 200 of the energy storage battery also includes a circuit board 250, which has at least two through holes configured for identification by a charge-coupled device (CCD) detection device to prevent assembly errors. At least one through hole is a first through hole 251, configured to expose at least two explosion-proof valves 310 of the battery cell 300 connected to the conductive aluminum busbar 210. An isolation plate 230 has a protrusion 231 embedded in the first through hole 251, configured to isolate adjacent explosion-proof valves 310. In other embodiments, other through holes, such as a second through hole 252, can expose the explosion-proof valve 310, or shield the explosion-proof valve 310, or the second through hole 252 can avoid the explosion-proof valve 310. As an example, the first through-hole 251 is configured to expose at least two explosion-proof valves 310, and the second through-hole 252 is configured to expose at most one explosion-proof valve 310; exemplaryly, each through-hole is configured to expose at least two explosion-proof valves 310. Compared to the embodiment where one explosion-proof valve 310 is exposed per through-hole, the embodiment where at least two explosion-proof valves 310 are exposed per through-hole is beneficial to improving the flexibility of the separator 230 in the CCS; on the one hand, the cell 300 will expand and contract in volume during charging and discharging, especially in high-energy-density batteries, this phenomenon is more obvious, and the more flexible separator 230 can better follow the deformation of the cell 300, avoiding the separator 230 from cracking or being damaged due to the expansion of the cell 300, and ensuring that the separator 230 always maintains a good isolation effect. On the other hand, when a battery module with cell 300 is subjected to vibration and impact, the more flexible isolation plate 230 can play a better buffering role, which is conducive to absorbing vibration energy, thereby reducing the risk of damage to cell 300 and improving the stability of battery module such as energy storage battery device 100.

[0086] For example, the isolation plate 230 has a slot corresponding to the through hole, and the slot exposes the through hole so that the slot and the corresponding through hole together expose the explosion-proof valve 310 of the battery cell 300 connected to the conductive aluminum busbar 210; and the isolation plate 230 has a protrusion 231 at the edge of the slot, which is embedded in the first through hole 251. This design, on the one hand, by setting the protrusion 231 on the isolation plate 230 to separate two adjacent explosion-proof valves 310, can mitigate the possibility of thermal runaway or damage to adjacent battery cells 300 in the event of thermal runaway. On the other hand, at least two through holes on the circuit board 250 are configured for identification by the charge-coupled device detection equipment to ensure that the circuit board can be correctly installed during assembly, preventing failures caused by assembly errors. The protrusion 231 of the isolation plate 230 embedded in the first through hole 251 further enhances the accuracy of assembly and prevents incorrect connection between the circuit board and the conductive aluminum busbar 210. Furthermore, the protrusion 231 is configured to isolate adjacent explosion-proof valves 310. Combined with the embodiment with the slot, this provides a buffer space and prevents mutual interference between explosion-proof valves, further improving the safety of the battery connection system 200 of the energy storage battery, thereby enhancing the safety of the energy storage battery device 100 employing the battery connection system 200 of the energy storage battery. Additionally, the design of the through-hole and the protrusion 231 makes the assembly process more intuitive and faster, reducing assembly time and complexity. Moreover, by preventing assembly errors and ensuring the accessibility of the explosion-proof valves, it reduces the risk of system failure due to assembly errors or explosion-proof valve malfunctions.

[0087] In some of these embodiments, such as Figure 11 and Figure 12 As shown, the battery connection system 200 of the energy storage battery also includes a wiring harness 240 connecting the circuit board 250 and the battery cells 300, used to transmit electrical signals from each battery cell 300 to the circuit board 250. As an example, Figure 11 In the embodiment shown, the battery connection system 200 of the energy storage battery also includes a fixing member 280 for fixing the cells 300 to each other.

[0088] In some embodiments, an electrical device includes an energy storage battery device 100 according to any embodiment. It is understood that the electrical device includes the energy storage battery device 100 according to any embodiment, and therefore also possesses the beneficial effects corresponding to the energy storage battery device 100 of the battery connection system 200 employing the energy storage battery device 100 of any embodiment, which will not be elaborated upon here. As examples, the electrical device includes a solar power generation system, a wind power generation system, grid peak shaving and frequency regulation equipment, a backup power supply, an uninterruptible power supply, etc.

[0089] It should be noted that other embodiments of this application also include a battery connection system, an energy storage battery device, and an electrical device formed by combining the technical features of the above embodiments.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A battery connection system (200) for an energy storage battery, characterized in that, Including conductive aluminum busbar (210); The conductive aluminum busbar (210) includes a first electrical contact (211) and a second electrical contact (212). The first power connector (211) and the second power connector (212) have a first dissimilar specification, which is configured as a foolproof assembly feature of the battery connection system (200) of the energy storage battery. The first contact portion (221) of the first contact member (211) and the second contact portion (222) of the second contact member (212) have different lengths. In the extension direction (260) of the conductive aluminum busbar (210) or in the width direction (270) perpendicular to the extension direction (260), the length difference between the first electrical contact part (221) and the second electrical contact part (222) is greater than a preset value, the preset value being the sum of the length tolerance of the conductive aluminum busbar (210) and twice the fitting gap.

2. The battery connection system (200) for the energy storage battery according to claim 1, characterized in that, The first contact (211) is configured as the positive electrode of the conductive aluminum busbar (210), the second contact (212) is configured as the negative electrode of the conductive aluminum busbar (210), and the length of the first contact (221) is greater than the length of the second contact (222).

3. The battery connection system (200) for the energy storage battery according to claim 1, characterized in that, The first contact element (211) and the second contact element (212) have different shapes; or, The first electrical contact part (221) and the second electrical contact part (222) have different shapes.

4. The battery connection system (200) for the energy storage battery according to claim 1, characterized in that, The first electrical connector (211) and the second electrical connector (212) have different positioning structures (214), wherein the positioning structure includes a protrusion and a groove.

5. The battery connection system (200) for the energy storage battery according to claim 4, characterized in that, The positioning structure extends through the first power connector (211) and the second power connector (212); or, the positioning structure is located at the edge of the first power connector (211) and the edge of the second power connector (212).

6. The battery connection system (200) for the energy storage battery according to claim 4, characterized in that, The first power receiving part (221) and the second power receiving part (222) have different positioning structures; The positioning structure extends through the first power receiving part (221) and the second power receiving part (222); or the positioning structure is located at the edge of the first power receiving part (221) and the edge of the second power receiving part (222).

7. The battery connection system (200) for the energy storage battery according to claim 1, characterized in that, The battery connection system (200) of the energy storage battery also includes a circuit board (250). Furthermore, the circuit board (250) has at least two through holes, which are configured to be identified by a charge-coupled device detection device as a foolproof assembly feature of the circuit board (250).

8. The battery connection system (200) for the energy storage battery according to claim 7, characterized in that, Along the different extension direction (260) of the conductive aluminum busbar (210), at least two of the through holes exhibit different morphologies.

9. The battery connection system (200) for the energy storage battery according to claim 7, characterized in that, The through holes include a first through hole (251) and a second through hole (252). The first through hole (251) and the second through hole (252) have different numbers, different positional distributions, or different specifications to cooperate with the first electrical connector (211) and the second electrical connector (212) as a foolproof assembly of the battery connection system (200) of the energy storage battery.

10. The battery connection system (200) for the energy storage battery according to claim 7, characterized in that, The through hole is configured to expose the explosion-proof valve (310) of the battery cell (300) connected to the conductive aluminum busbar (210).

11. The battery connection system (200) for the energy storage battery according to claim 10, characterized in that, The through holes include a first through hole (251) and a second through hole (252), the first through hole (251) and the second through hole (252) having different areas to expose different numbers of the explosion-proof valves (310).

12. The battery connection system (200) for the energy storage battery according to claim 10, characterized in that, The through hole includes a first through hole (251) and a second through hole (252), the first through hole (251) being configured to expose all the explosion-proof valves (310) of the battery cell (300) connected to the conductive aluminum busbar (210).

13. The battery connection system (200) for the energy storage battery according to claim 1, characterized in that, The battery connection system (200) of the energy storage battery also includes an isolation plate (230) disposed on the conductive aluminum busbar (210).

14. The battery connection system (200) for the energy storage battery according to claim 13, characterized in that, The isolation plate (230) has an isolation shape corresponding to the first power connector (211) and the second power connector (212), the isolation shape being configured to prevent incorrect assembly of the battery connection system (200) of the energy storage battery.

15. The battery connection system (200) for the energy storage battery according to claim 13, characterized in that, The battery connection system (200) of the energy storage battery also includes a circuit board (250) having at least two through holes, the at least two through holes being configured for identification by a charge-coupled element detection device as a foolproof assembly method for the circuit board (250); At least one of the through holes is a first through hole (251), which is configured to expose at least two explosion-proof valves (310) of the battery cell (300) connected to the conductive aluminum busbar (210). The isolation plate (230) is provided with a protrusion (231), which is embedded in the first through hole (251) and is configured to isolate the adjacent explosion-proof valve (310).

16. The battery connection system (200) for the energy storage battery according to claim 15, characterized in that, The circuit board (250) is disposed on the isolation plate (230), and the isolation plate (230) is located between the circuit board (250) and the conductive aluminum busbar (210).

17. An energy storage battery device (100), characterized in that, Includes a battery cell (300), an end plate (400), and a battery connection system (200) for the energy storage battery as described in any one of claims 1 to 16. The conductive aluminum busbar (210) of the battery connection system (200) of the energy storage battery is connected to the electrode (320) of the cell (300). The end plate (400) is provided with a first power base (411) and a second power base (421). The first electrical connector (211) of the conductive aluminum busbar (210) is mounted on the first electrical base (411), and the second electrical connector (212) of the conductive aluminum busbar (210) is mounted on the second electrical base (421). The first power base (411) and the second power base (421) have different assembly lengths to adapt to the first power receiving part (221) of the first power receiving member (211) and the second power receiving part (222) of the second power receiving member (212).

18. The energy storage battery device (100) according to claim 17, characterized in that, The end plate (400) is also provided with an insert (430), and the first power base (411) and the second power base (421) achieve different assembly lengths through different inserts (430); The first power receiving part (221) is disposed on the first power receiving base (411) by means of an insert (430), and the second power receiving part (222) is disposed on the second power receiving base (421) by means of another insert (430).

19. An electrical appliance, characterized in that, Includes the energy storage battery device (100) as described in any one of claims 17 to 18.

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