Battery pack and battery energy storage system

Abstract

The application discloses a battery pack and a battery energy storage system. The battery pack comprises a box body, a module assembly and a battery management assembly. The module assembly comprises at least one front row of battery modules and at least one rear row of battery modules; the battery management assembly comprises a battery management module, a first collection wire harness and a second collection wire harness, the battery management module is arranged on the box body and located on the side of the front row of battery modules away from the rear row of battery modules, the first collection wire harness is connected between the front row of battery modules and the battery management module, and the second collection wire harness is connected between the rear row of battery modules and the battery management module; at least part of the second collection wire harness extends to the front row of battery modules and is limited on the front row of battery modules. The application can solve the problem that the collection wire harness of the rear row of battery modules is arranged in suspension when connected with the master control unit at the front end in the prior art, the internal lines of the battery pack are disordered, and safety hazards are easily caused.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and more specifically, to a battery pack and a battery energy storage system. Background Technology

[0002] Battery energy storage systems are an important component of new energy systems, typically consisting of multiple battery modules connected in series and parallel. The voltage and temperature acquisition harnesses of each battery module need to be centrally connected to the main control unit at the front end of the battery pack to monitor and manage the operating status of each module.

[0003] However, there is a considerable distance between the battery module located at the rear and the main control unit at the front. When the data acquisition harness is connected to the main control unit at the front, it is suspended in the air. This not only causes messy internal wiring in the battery pack, but may also cause safety hazards due to the shaking and friction of the harness. Utility Model Content

[0004] The main purpose of this application is to provide a battery pack and battery energy storage system to solve the problem that in the prior art, the data acquisition harness of the rear battery module is suspended when connected to the front-end main control unit, which leads to messy internal wiring of the battery pack and easily causes safety hazards.

[0005] According to one aspect of this application, a battery pack is provided, comprising:

[0006] The housing has an accommodating space;

[0007] A module assembly is disposed in the accommodating space, the module assembly includes at least one front battery module and at least one rear battery module, the front battery module and the rear battery module are spaced apart along the length direction of the battery pack;

[0008] A battery management component, comprising a battery management module, a first acquisition harness, and a second acquisition harness. The battery management module is disposed on the housing and located on the side of the front battery module away from the rear battery module. The first acquisition harness is connected between the front battery module and the battery management module, and the second acquisition harness is connected between the rear battery module and the battery management module.

[0009] At least a portion of the second acquisition harness extends to and is confined to the front battery module.

[0010] Furthermore, a first limiting component is provided on the top of the front battery module. The first limiting component is used to limit the first acquisition harness at least, and at least a portion of the second acquisition harness is limited on the first limiting component.

[0011] Furthermore, the first limiting component includes a first fixed bracket, on which a first limiting channel and a second limiting channel are provided. Both the first limiting channel and the second limiting channel extend along the length direction of the battery pack. The first acquisition harness is located within the first limiting channel and extends along the length direction of the first limiting channel, and a portion of the second acquisition harness is located within the second limiting channel and extends along the length direction of the second limiting channel.

[0012] Furthermore, the first fixed bracket is provided with a plurality of first receiving slots, a plurality of second receiving slots and a plurality of first pressure relief channels. The plurality of first receiving slots, the plurality of second receiving slots and the plurality of first pressure relief channels are respectively spaced apart along the length direction of the battery pack, and the first receiving slots, the first pressure relief channels and the second receiving slots are spaced apart along the width direction of the battery pack.

[0013] Wherein, the side wall of the first receiving groove and the first pressure relief channel form the first limiting channel, and the side wall of the second receiving groove and the first pressure relief channel form the second limiting channel; and / or,

[0014] The first limiting component further includes a first binding part, which is used at least to fix the first acquisition harness within the first limiting channel.

[0015] Furthermore, the first fixed bracket is provided with a connecting component, the connecting component including two connecting protrusions, the two connecting protrusions being located on opposite sides of the second limiting channel along the width direction of the battery pack;

[0016] The first limiting component further includes a limiting member, which is detachably connected to the two connecting protrusions and located at the top of the second acquisition harness within the second limiting channel.

[0017] Furthermore, the limiting member includes a limiting piece, which is provided with a first connecting hole and at least two second connecting holes. One of the two connecting protrusions is provided with a third connecting hole, and the other of the two connecting protrusions is provided with a fourth connecting hole. The first limiting component also includes a locking member, which is locked between the first connecting hole and the third connecting hole, and between the second connecting hole and the fourth connecting hole, respectively.

[0018] Furthermore, a second limiting component is provided on the top of the rear battery module. The second limiting component includes a second fixed bracket, and a third limiting channel and a fourth limiting channel are provided on the second fixed bracket. The third limiting channel and the fourth limiting channel both extend along the length direction of the battery pack. The second acquisition harness includes an acquisition main segment, a first acquisition segment, and a second acquisition segment.

[0019] Wherein, the first acquisition segment and the second acquisition segment are respectively located in the third limiting channel and the fourth limiting channel, and the first acquisition segment and the second acquisition segment converge at one end near the front battery module to form the main acquisition segment, which is limited to the front battery module; and / or,

[0020] The second limiting component further includes a second binding part, which is used at least to fix the first acquisition segment and the second acquisition segment in the third limiting channel and the fourth limiting channel, respectively.

[0021] Furthermore, both the front battery module and the rear battery module comprise two units, with the two front battery modules and the two rear battery modules respectively spaced apart along the width direction of the battery pack; and / or,

[0022] Both the front battery module and the rear battery module include a 1P26S module.

[0023] Furthermore, the housing is provided with multiple rotatable rolling parts on both opposite sides along the width direction of the battery pack, and the multiple rolling parts are spaced apart along the length direction of the battery pack; and / or,

[0024] A fuse is provided in the accommodating space. The fuse is electrically connected to the front battery module and the rear battery module respectively, and the fuse includes a 1500V fuse.

[0025] On the other hand, this application also provides a battery energy storage system, which includes the battery pack described above.

[0026] This application connects the second data acquisition harness to the rear battery module and extends it towards the front battery module, with at least a portion of the second data acquisition harness positioned on the front battery module. This allows the second data acquisition harness to connect directly to the battery management module located on the side of the front battery module opposite to the rear battery module. This effectively constrains the second data acquisition harness, preventing it from moving freely inside the battery pack. This not only makes the internal wiring layout more organized and reduces tangling and compression between wires, but also lowers the risk of short circuits and malfunctions caused by harness wear and poor contact. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the battery pack structure disclosed in the embodiments of this application;

[0029] Figure 2 This is an exploded view of the battery pack disclosed in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the structure of the module component disclosed in the embodiments of this application;

[0031] Figure 4 The embodiments disclosed in this application Figure 3 Enlarged view of section A;

[0032] Figure 5 The embodiments disclosed in this application Figure 3 Enlarged view of section B;

[0033] Figure 6 This is a schematic diagram of the structure of the first limiting component disclosed in the embodiments of this application;

[0034] Figure 7 This is a schematic diagram of the structure of the second limiting component disclosed in an embodiment of this application.

[0035] The above figures include the following reference numerals:

[0036] 10. Housing; 11. Accommodation space; 20. Module assembly; 21. Front battery module; 22. Rear battery module; 30. Battery management assembly; 31. Battery management module; 32. First acquisition harness; 33. Second acquisition harness; 331. Main acquisition segment; 332. First acquisition sub-segment; 333. Second acquisition sub-segment; 40. First limiting assembly; 41. First fixing bracket; 42. First limiting channel; 43. Second limiting channel; 44. First accommodating slot; 45. Second accommodating slot; 46. ​​First pressure relief channel; 47. Connecting component; 471. Connecting protrusion; 472. Third connecting hole; 473. Fourth connecting hole; 48. Limiting component; 481. Limiting piece; 482. First connecting hole; 483. Second connecting hole; 50. Second limiting assembly; 51. Second fixing bracket; 52. Third limiting channel; 53. Fourth limiting channel; 54. Third receiving groove; 55. Fourth receiving groove; 56. Second pressure relief channel; 60. Rolling part; 70. Fuse; 80. Conductive component. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0040] As mentioned in the background section, in related technologies, the voltage and temperature acquisition harnesses of each battery module need to be centrally connected to the main control unit at the front end of the battery pack to monitor and manage the operating status of each module. However, there is a considerable distance between the rear battery modules and the front-end main control unit, and their acquisition harnesses are suspended when connected to the front-end main control unit. This not only leads to cluttered internal wiring in the battery pack but may also cause safety hazards due to harness movement and friction. To address this, the inventors of this application have designed a new battery pack that can at least solve the problem in the prior art where the acquisition harnesses of the rear battery modules are suspended when connected to the front-end main control unit, resulting in cluttered internal wiring and potential safety hazards. The battery pack of this application will be described in detail below with reference to the accompanying drawings.

[0041] It should be noted that the "length direction of the battery pack" in this application is... Figure 2 The direction indicated by the middle arrow X; "the width direction of the battery pack" is... Figure 2 The direction indicated by the middle arrow Y.

[0042] See Figures 1 to 3As shown, according to an embodiment of this application, a battery pack is provided, which includes a housing 10, a module assembly 20, and a battery management assembly 30.

[0043] Specifically, the housing 10 has an accommodating space 11; the module assembly 20 is disposed in the accommodating space 11, and the module assembly 20 includes at least one front battery module 21 and at least one rear battery module 22, the front battery module 21 and the rear battery module 22 being spaced apart along the length of the battery pack; the battery management assembly 30 includes a battery management module 31, a first acquisition harness 32 and a second acquisition harness 33, the battery management module 31 being disposed on the housing 10 and located on the side of the front battery module 21 away from the rear battery module 22, the first acquisition harness 32 being connected between the front battery module 21 and the battery management module 31, and the second acquisition harness 33 being connected between the rear battery module 22 and the battery management module 31; wherein, at least a portion of the second acquisition harness 33 extends to the front battery module 21 and is confined to the front battery module 21.

[0044] In this embodiment, the housing 10 provides a mounting carrier for the module assembly 20 and the battery management assembly 30, effectively protecting the internal components from interference and damage from the external environment. The first acquisition harness 32 is used to collect voltage, temperature, and other status data of the front battery module 21 and transmit them to the battery management module 31, while the second acquisition harness 33 is used to collect voltage, temperature, and other status data of the rear battery module 22 and transmit them to the battery management module 31. In actual manufacturing of the battery pack, the front battery module 21 and the rear battery module 22 can be sequentially and spaced apart along the length of the battery pack within the accommodating space 11. Subsequently, the battery management module 31 is installed on the housing 10, with the battery management module 31 located on the side of the front battery module 21 away from the rear battery module 22, to facilitate subsequent connection with the first acquisition harness 32 and the second acquisition harness 33. Next, connect one end of the first acquisition harness 32 to the corresponding interface of the front battery module 21, and connect the other end to the corresponding port of the battery management module 31 to complete the construction of the status data acquisition channel of the front battery module 21.

[0045] Meanwhile, since the battery management module 31 is located on the side of the front battery module 21 away from the rear battery module 22, to connect the second acquisition harness 33 to the battery management module 31, it is only necessary to first securely connect one end of the second acquisition harness 33 to the interface of the rear battery module 22, and then extend the second acquisition harness 33 towards the front battery module 21. During the extension process, since the second acquisition harness 33 will cross the front battery module 21, at least a portion of the second acquisition harness 33 can be limited on the front battery module 21 to fix the extension area of ​​the second acquisition harness 33, so that this part of the harness is neatly attached to the front battery module 21. Finally, the end of the extended part is connected to the battery management module 31, thereby effectively preventing the second acquisition harness 33 from being suspended in the air during the connection with the battery management module 31.

[0046] In other words, this application extends the second acquisition harness 33 towards the front battery module 21 after connecting it to the rear battery module 22, and confines at least a portion of the second acquisition harness 33 to the front battery module 21. This allows the second acquisition harness 33 to connect directly to the battery management module 31 located on the side of the front battery module 21 opposite to the rear battery module 22. This effectively restrains the second acquisition harness 33, which might otherwise be suspended, preventing it from moving freely inside the battery pack. This not only makes the internal wiring layout more organized and reduces the possibility of wires tangling or being squeezed, but also lowers the risk of short circuits and malfunctions caused by harness wear or poor contact.

[0047] Optionally, in this embodiment, the front battery module 21 and the rear battery module 22 can each be configured as one, or as two, three, or more than four; this application does not impose a specific limitation. Figure 2 The diagram shows the case where there are two front battery modules 21 and two rear battery modules 22.

[0048] Further, see Figure 3 , Figure 4 and Figure 6 As shown, in this embodiment, the top of the front battery module 21 is provided with a first limiting component 40. The first limiting component 40 is used to limit the first acquisition harness 32 at least, and at least part of the second acquisition harness 33 is limited on the first limiting component 40.

[0049] Specifically, in this embodiment, the first limiting component 40 effectively constrains the first acquisition harness 32, preventing it from shifting or becoming tangled due to vibration or other factors during battery pack operation. This ensures uninterrupted signal transmission between the front battery module 21 and the battery management module 31. Simultaneously, since at least a portion of the second acquisition harness 33 is confined to the first limiting component 40, it has a stable support during extension, preventing it from swaying randomly or deviating from its preset path due to vibration during battery pack operation. This avoids friction or collision with other components, further ensuring the integrity of the wiring and the stability of signal transmission. It also makes the wiring layout inside the battery pack more uniform and orderly, reducing safety risks caused by messy wiring and facilitating subsequent maintenance.

[0050] Further, see Figure 6 As shown, the first limiting component 40 in this embodiment includes a first fixed bracket 41, on which a first limiting channel 42 and a second limiting channel 43 are provided. Both the first limiting channel 42 and the second limiting channel 43 extend along the length direction of the battery pack. The first acquisition harness 32 is located in the first limiting channel 42 and extends along the length direction of the first limiting channel 42. A portion of the second acquisition harness 33 is located in the second limiting channel 43 and extends along the length direction of the second limiting channel 43.

[0051] Specifically, the first fixed bracket 41 provides a stable mounting base for the first acquisition harness 32 and at least part of the second acquisition harness 33, ensuring that both can be firmly mounted on top of the front battery module 21. Meanwhile, since the first fixed bracket 41 is provided with a first limiting channel 42 and a second limiting channel 43, when the first acquisition harness 32 and part of the second acquisition harness 33 are respectively installed in the first limiting channel 42 and the second limiting channel 43, the two channels can form independent and clear constraints on the harnesses they accommodate. The first limiting channel 42 can guide the first acquisition harness 32 to extend orderly along the length of the battery pack, preventing it from shifting or rubbing against other components under vibration or other operating conditions. The second limiting channel 43 can regulate the direction of part of the second acquisition harness 33, ensuring that it extends stably along a set path to the battery management module 31, reducing entanglement with the first acquisition harness 32 or other components. Furthermore, this separate limiting design makes the layout of wiring harnesses for different functions clearer, ensuring the stability of their respective signal transmissions, further optimizing the utilization of the internal space of the battery pack, and reducing the possibility of safety hazards caused by messy wiring.

[0052] Further, see Figure 4 and Figure 6As shown, in this embodiment, the first fixed bracket 41 is provided with a plurality of first receiving slots 44, a plurality of second receiving slots 45, and a plurality of first pressure relief channels 46. The plurality of first receiving slots 44, the plurality of second receiving slots 45, and the plurality of first pressure relief channels 46 are respectively spaced apart along the length direction of the battery pack, and the first receiving slots 44, the first pressure relief channels 46, and the second receiving slots 45 are spaced apart along the width direction of the battery pack. Among them, the side wall of the first receiving slot 44 and the first pressure relief channel 46 form a first limiting channel 42, and the side wall of the second receiving slot 45 and the first pressure relief channel 46 form a second limiting channel 43. It should be noted that in this embodiment, both the first receiving groove 44 and the second receiving groove 45 are used for the installation of the conductive component 80, so that the conductive component 80 can be connected to the front battery module 21; the first pressure relief channel 46 is used to provide a path for the gas or heat accumulated in the front battery module 21 when abnormal pressure occurs, thereby reducing the risk of safety accidents caused by excessive pressure.

[0053] Specifically, since multiple first receiving slots 44, multiple second receiving slots 45, and multiple first pressure relief channels 46 are respectively arranged at intervals along the length direction of the battery pack, and the first receiving slots 44, first pressure relief channels 46, and second receiving slots 45 are arranged at intervals along the width direction of the battery pack, the side wall of the first receiving slot 44 and the first pressure relief channel 46 can naturally form a first limiting channel 42, and the side wall of the second receiving slot 45 and the first pressure relief channel 46 can naturally form a second limiting channel 43. Without the need for additional special limiting structures, the limiting function of the first acquisition harness 32 and part of the second acquisition harness 33 is realized, which greatly simplifies the overall structure of the first fixed bracket 41 and reduces the complexity and cost of processing and manufacturing. At the same time, this design, which relies on the necessary structural intervals to form limiting channels, allows the first receiving slot 44, the second receiving slot 45, and the first pressure relief channel 46 to further assume the role of limiting the wiring harness while fulfilling their original functions. This makes the function of the first fixed bracket 41 more concentrated and the space utilization more efficient. It also makes the formation of the first limiting channel 42 and the second limiting channel 43 more natural and stable, thereby more reliably constraining the first acquisition wiring harness 32 and the second acquisition wiring harness 33, preventing them from shifting or shaking, ensuring the regularity of the internal wiring layout of the battery pack, and reducing safety hazards.

[0054] For example, in this embodiment, the first receiving groove 44, the second receiving groove 45, and the first pressure relief channel 46 can all be set to two, three, or more, and this application does not make any specific limitation.

[0055] Furthermore, the first limiting component 40 in this embodiment also includes a first binding part (not shown in the figure), which is used at least to fix the first acquisition wire harness 32 within the first limiting channel 42.

[0056] Specifically, the first binding part secures the first data acquisition harness 32 within the first limiting channel 42. This additional binding constraint further enhances the stability of the first data acquisition harness 32 within the first limiting channel 42, preventing it from detaching or shifting position under conditions of battery pack vibration or shaking. This ensures the first data acquisition harness 32 always follows the set path, creating a dual fixing effect with the first limiting channel 42. This strengthens the constraint on the harness and makes the wiring layout more stable and orderly, reducing the risk of messy wiring or signal transmission failures caused by loose harnesses. Simultaneously, this binding method is simple to operate, facilitating later inspection and replacement of the harness, and improving the overall reliability and maintenance convenience of the battery pack structure.

[0057] For example, the first binding part in this embodiment includes flexible binding straps, binding buckles, etc. Any other modifications under the concept of this application are within the protection scope of this application.

[0058] Optionally, the first binding part in this embodiment can be set to one, two or more, and this application does not make a specific limitation.

[0059] Further, see Figure 4 and Figure 6 As shown, in this embodiment, the first fixed bracket 41 is provided with a connecting component 47, which includes two connecting protrusions 471. The two connecting protrusions 471 are located on opposite sides of the second limiting channel 43 along the width direction of the battery pack. The first limiting component 40 also includes a limiting member 48, which is detachably connected to the two connecting protrusions 471 and located on the top of the second acquisition harness 33 in the second limiting channel 43.

[0060] Specifically, this embodiment provides symmetrical and stable mounting support points for the limiting member 48 by setting connecting protrusions 471 on both sides of the second limiting channel 43. This symmetrical distribution structure allows the limiting member 48 to be subjected to more balanced force after installation, enhancing the stability of the constraint on the second acquisition harness 33. Since the limiting member 48 is located on top of the second acquisition harness 33 after installation, it can effectively suppress the second acquisition harness 33 from above, preventing the second acquisition harness 33 from coming off the second limiting channel 43 due to vibration, impact, or other factors during battery pack operation. It also forms an all-round constraint with the side wall of the second limiting channel 43. This structure composed of connecting protrusions 471 and limiting member 48 further strengthens the fixing effect on the second acquisition harness 33, ensuring that it is always stably within the preset path. At the same time, since the limiting member 48 is detachable, it is easy to quickly disassemble and assemble during installation and maintenance, making the operation flexible and convenient, and improving the regularity and reliability of the internal wiring layout of the battery pack.

[0061] Further, see Figure 4 As shown, the limiting member 48 in this embodiment includes a limiting piece 481, which has a first connecting hole 482 and at least two second connecting holes 483. One of the two connecting protrusions 471 has a third connecting hole 472, and the other of the two connecting protrusions 471 has a fourth connecting hole 473. The first limiting component 40 also includes a locking member (not shown in the figure), which is locked between the first connecting hole 482 and the third connecting hole 472, and between the second connecting hole 483 and the fourth connecting hole 473.

[0062] Specifically, this embodiment provides precise connection points for the locking component by aligning the first connecting hole 482 with the third connecting hole 472 and the second connecting hole 483 with the fourth connecting hole 473, ensuring that the limiting piece 481 can accurately and stably mate with the connecting protrusion 471. Simultaneously, by locking the locking component between the first connecting hole 482 and the third connecting hole 472, and between the second connecting hole 483 and the fourth connecting hole 473, this multi-point locking method firmly fixes the limiting piece 481 to the connecting protrusion 471, enhancing the pressure of the limiting piece 481 on the second acquisition harness 33 within the second limiting channel 43. This prevents the limiting piece 481 from loosening or shifting under vibration or other operating conditions, thus preventing the second acquisition harness 33 from coming off upwards. Furthermore, this detachable connection structure, which uses connecting holes and locking components, facilitates the installation and removal of the limiting piece 481, providing convenience for later maintenance of the second acquisition harness 33.

[0063] It is worth mentioning that, since the first connecting hole 482 in this embodiment includes one, when the limiting piece 481 needs to be installed, the locking member can be locked between the first connecting hole 482 and the third connecting hole 472 first. At this time, the limiting piece 481 can rotate around the locking member, which makes it easier to adjust the angle of the limiting piece 481 to align with the second connecting hole 483 and the fourth connecting hole 473, reducing the difficulty of hole alignment during installation. Meanwhile, before installing the second acquisition harness 33 into the second limiting channel 43, the limiting piece 481 can be rotated around the locked locking member (i.e., the locking member that locks the first connecting hole 482 and the third connecting hole 472) to a position that does not obstruct the placement of the second acquisition harness 33. After the second acquisition harness 33 is smoothly placed into the second limiting channel 43, the limiting piece 481 is rotated to cover the top of the second acquisition harness 33. Then, the remaining connecting holes are locked by another locking member. This operation method not only provides sufficient space for the installation of the harness and reduces the installation difficulties caused by the obstruction of the limiting piece 481, but also enables the effective fixation of the harness quickly after installation.

[0064] For example, the locking components in this embodiment include screws, bolts, pins, clips, rivets, etc. Any other modifications under the concept of this application are within the protection scope of this application.

[0065] Further, see Figure 3 , Figure 5 and Figure 7 As shown, in this embodiment, a second limiting component 50 is provided on the top of the rear battery module 22. The second limiting component 50 includes a second fixed bracket 51, and a third limiting channel 52 and a fourth limiting channel 53 are provided on the second fixed bracket 51. The third limiting channel 52 and the fourth limiting channel 53 both extend along the length direction of the battery pack. The second acquisition harness 33 includes an acquisition main segment 331, a first acquisition segment 332 and a second acquisition segment 333. The first acquisition segment 332 and the second acquisition segment 333 are located in the third limiting channel 52 and the fourth limiting channel 53, respectively. The first acquisition segment 332 and the second acquisition segment 333 converge at one end near the front battery module 21 to form the acquisition main segment 331, which is limited to the front battery module 21.

[0066] Specifically, the second fixed bracket 51 provides a stable mounting base for the second acquisition harness 33, ensuring the stability of the second acquisition harness 33 when connected to the rear battery module 22. The third limiting channel 52 and the fourth limiting channel 53 effectively constrain the first acquisition segment 332 and the second acquisition segment 333 respectively, preventing these two segments of the harness from shifting, tangling, or rubbing against other components in the rear battery module 22 area, thus ensuring stable transmission of the acquired data. Meanwhile, since the first acquisition segment 332 and the second acquisition segment 333 in this embodiment converge into the main acquisition segment 331 at the end near the front battery module 21, it can adapt to the acquisition needs of different areas of the rear battery module 22, making the wiring harness layout more in line with the module structure and reducing redundant lines. The main acquisition segment 331 is located on the front battery module 21, which not only realizes the connection between the second acquisition wiring harness 33 and the front limiting structure, but also makes the entire second acquisition wiring harness 33 form a continuous and regular path from the rear to the front, avoiding suspension and shaking, and further reducing the possibility of safety hazards caused by messy lines.

[0067] Furthermore, the second limiting component 50 in this embodiment also includes a second binding part (not shown in the figure), which is used at least to fix the first acquisition segment 332 and the second acquisition segment 333 in the third limiting channel 52 and the fourth limiting channel 53, respectively.

[0068] Specifically, the second binding part can fix the first acquisition segment 332 and the second acquisition segment 333 of the second acquisition harness 33 within the third limiting channel 52 and the fourth limiting channel 53, respectively. This additional binding constraint further enhances the stability of the second acquisition harness 33 within the third and fourth limiting channels 52 and 53, preventing the second acquisition harness 33 from detaching from or shifting its position under conditions such as battery pack vibration or shaking. This ensures that the second acquisition harness 33 always follows the set path, strengthening the constraint on the harness and making the wiring layout more stable and orderly, reducing the risk of wiring clutter or signal transmission failures caused by loose harnesses. At the same time, this binding and fixing method is simple to operate, facilitating later inspection and replacement of the harness, and improving the overall reliability and maintenance convenience of the battery pack structure.

[0069] For example, the second binding part in this embodiment includes flexible binding tape, binding buckle, etc. Any other variation of the concept of this application is within the protection scope of this application.

[0070] Optionally, the second binding part in this embodiment can be set to one, two or more, and this application does not make a specific limitation.

[0071] Further, see Figure 7 As shown, in this embodiment, the second fixed bracket 51 is provided with a plurality of third receiving slots 54, a plurality of fourth receiving slots 55, and a plurality of second pressure relief channels 56. The plurality of third receiving slots 54, the plurality of fourth receiving slots 55, and the plurality of second pressure relief channels 56 are respectively spaced apart along the length direction of the battery pack, and the third receiving slots 54, the second pressure relief channels 56, and the fourth receiving slots 55 are spaced apart along the width direction of the battery pack. Among them, the side wall of the third receiving slot 54 and the second pressure relief channel 56 form a third limiting channel 52, and the side wall of the fourth receiving slot 55 and the second pressure relief channel 56 form a fourth limiting channel 53. It should be noted that in this embodiment, the third receiving groove 54 and the fourth receiving groove 55 are both used for the installation of the conductive component 80, so that the conductive component 80 can be connected to the rear battery module 22; the second pressure relief channel 56 is used to provide a path for the gas or heat accumulated in the rear battery module 22 when abnormal pressure occurs, thereby reducing the risk of safety accidents caused by excessive pressure.

[0072] Specifically, since multiple third receiving slots 54, multiple fourth receiving slots 55, and multiple second pressure relief channels 56 are respectively arranged at intervals along the length direction of the battery pack, and the third receiving slots 54, second pressure relief channels 56, and fourth receiving slots 55 are arranged at intervals along the width direction of the battery pack, the side wall of the third receiving slot 54 and the second pressure relief channel 56 can naturally form a third limiting channel 52, and the side wall of the fourth receiving slot 55 and the second pressure relief channel 56 can naturally form a fourth limiting channel 53. Without the need for additional special limiting structures, the limiting function of the first acquisition segment 332 and the second acquisition segment 333 is realized, which greatly simplifies the overall structure of the second fixed bracket 51 and reduces the complexity and cost of processing and manufacturing. At the same time, this design, which relies on the necessary structural intervals to form limiting channels, allows the third receiving slot 54, the fourth receiving slot 55, and the second pressure relief channel 56 to further assume the role of limiting the wiring harness while fulfilling their original functions. This makes the function of the second fixed bracket 51 more concentrated and the space utilization more efficient. It also makes the formation of the third limiting channel 52 and the fourth limiting channel 53 more natural and stable, thereby more reliably constraining the first acquisition segment 332 and the second acquisition segment 333, preventing them from shifting or shaking, ensuring the regularity of the internal wiring layout of the battery pack, and reducing safety hazards.

[0073] For example, the third receiving groove 54, the fourth receiving groove 55, and the second pressure relief channel 56 in this embodiment can all be set to two, three, or more, and this application does not make any specific limitation.

[0074] Further, see Figure 2 As shown, in this embodiment, both the front battery module 21 and the rear battery module 22 include two modules, with the two front battery modules 21 and the two rear battery modules 22 spaced apart along the width direction of the battery pack. This allows for more efficient use of the lateral space inside the battery pack, avoiding installation inconvenience or structural redundancy caused by an excessively large single module. At the same time, the spaced arrangement provides a certain gap between the modules, facilitating heat dissipation, reducing the impact of heat accumulation on battery performance, and providing operational space for wiring harness arrangement and component maintenance.

[0075] Furthermore, in this embodiment, both the front battery module 21 and the rear battery module 22 include a 1P26S module.

[0076] Specifically, most existing 1P104S battery packs consist of eight 1P13S modules. This structure increases the width of the battery pack, reducing its space utilization. Therefore, this embodiment includes 1P26S modules in both the front battery module 21 and the rear battery module 22. This reduces the number of battery modules to only four 1P26S modules, thereby improving the space utilization of the battery pack.

[0077] Further, see Figures 1 to 2 As shown, in this embodiment, the housing 10 is provided with multiple rotatable rolling parts 60 on both sides opposite to each other along the width direction of the battery pack, and the multiple rolling parts 60 are spaced apart along the length direction of the battery pack.

[0078] Specifically, this embodiment, by providing rolling parts 60 on the housing 10, converts the sliding friction between the housing 10 and the contact surface into rolling friction during battery pack handling, installation, or maintenance. This significantly reduces resistance during movement, allowing operators to more easily adjust the battery pack's position and reducing handling difficulty and labor intensity. Simultaneously, the symmetrically distributed rolling parts 60 on both sides of the housing 10 ensure balanced force on the battery pack, preventing tilting or shifting due to uneven force during movement and ensuring operational safety. Furthermore, the multiple rolling parts 60 spaced along the length provide stable support for the housing 10, preventing localized deformation of the battery pack due to excessive force at a single point during placement or movement. They also adapt to different movement paths of varying lengths, ensuring smooth rolling under various working conditions. This aligns with the overall stability design of the battery pack, enhancing the product's ease of use and reliability.

[0079] Further, see Figure 2 As shown, in this embodiment, a fuse 70 is provided in the accommodating space 11. The fuse 70 is electrically connected to the front battery module 21 and the rear battery module 22 respectively, and the fuse 70 includes a 1500V fuse 70.

[0080] Specifically, the fuse 70 is designed to quickly melt and disconnect the front and rear battery modules 22 from the external circuit in case of overcurrent, short circuit, or other abnormal conditions, preventing the fault from spreading and damaging more components, thus playing a crucial role in circuit protection. The 1500V fuse 70 is suitable for the operating environment of high-voltage battery packs, ensuring stable response and reliable circuit disconnection under high-voltage conditions. Compared to low-voltage fuses, the fuse 70 has stronger withstand voltage and breaking capacity, effectively handling larger fault currents that may occur in high-voltage systems and improving the safety protection level of the battery pack.

[0081] It is worth mentioning that, since the battery pack in this application is composed of four 1P26S battery modules, a larger 1500V fuse 70 can be placed inside the battery pack to adapt to the working environment of the high-voltage battery pack.

[0082] On the other hand, this application also provides a battery energy storage system, which includes the aforementioned battery pack. Therefore, this battery energy storage system includes all the technical effects of the aforementioned battery pack. Since the technical effects of the battery pack have already been described in detail above, they will not be repeated here.

[0083] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0084] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0085] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery pack, characterized in that, include: The housing (10) has an accommodating space (11); Module assembly (20), the module assembly (20) is disposed in the accommodating space (11), the module assembly (20) includes at least one front row battery module (21) and at least one rear row battery module (22), the front row battery module (21) and the rear row battery module (22) are spaced apart along the length direction of the battery pack; A battery management component (30) includes a battery management module (31), a first acquisition harness (32), and a second acquisition harness (33). The battery management module (31) is disposed on the housing (10) and located on the side of the front battery module (21) away from the rear battery module (22). The first acquisition harness (32) is connected between the front battery module (21) and the battery management module (31), and the second acquisition harness (33) is connected between the rear battery module (22) and the battery management module (31). At least a portion of the second acquisition harness (33) extends to the front battery module (21) and is confined to the front battery module (21).

2. The battery pack according to claim 1, characterized in that, The top of the front battery module (21) is provided with a first limiting component (40), which is used to limit the first acquisition harness (32) at least, and at least part of the second acquisition harness (33) is limited on the first limiting component (40).

3. The battery pack according to claim 2, characterized in that, The first limiting component (40) includes a first fixed bracket (41), on which a first limiting channel (42) and a second limiting channel (43) are provided. Both the first limiting channel (42) and the second limiting channel (43) extend along the length direction of the battery pack. The first acquisition harness (32) is located in the first limiting channel (42) and extends along the length direction of the first limiting channel (42). A portion of the second acquisition harness (33) is located in the second limiting channel (43) and extends along the length direction of the second limiting channel (43).

4. The battery pack according to claim 3, characterized in that, The first fixed bracket (41) is provided with a plurality of first receiving slots (44), a plurality of second receiving slots (45) and a plurality of first pressure relief channels (46). The plurality of first receiving slots (44), the plurality of second receiving slots (45) and the plurality of first pressure relief channels (46) are respectively spaced apart along the length direction of the battery pack, and the first receiving slots (44), the first pressure relief channels (46) and the second receiving slots (45) are spaced apart along the width direction of the battery pack. Wherein, the side wall of the first receiving groove (44) and the first pressure relief channel (46) form the first limiting channel (42), and the side wall of the second receiving groove (45) and the first pressure relief channel (46) form the second limiting channel (43); and / or, The first limiting component (40) further includes a first binding part, which is used at least to fix the first acquisition wire harness (32) within the first limiting channel (42).

5. The battery pack according to claim 3, characterized in that, The first fixed bracket (41) is provided with a connecting component (47), the connecting component (47) includes two connecting protrusions (471), the two connecting protrusions (471) are respectively located on opposite sides of the second limiting channel (43) along the width direction of the battery pack; The first limiting component (40) further includes a limiting member (48), which is detachably connected to the two connecting protrusions (471) and located on top of the second acquisition harness (33) within the second limiting channel (43).

6. The battery pack according to claim 5, characterized in that, The limiting member (48) includes a limiting piece (481), which has a first connecting hole (482) and at least two second connecting holes (483). One of the two connecting protrusions (471) has a third connecting hole (472), and the other of the two connecting protrusions (471) has a fourth connecting hole (473). The first limiting component (40) also includes a locking member, which is locked between the first connecting hole (482) and the third connecting hole (472), and between the second connecting hole (483) and the fourth connecting hole (473).

7. The battery pack according to claim 1, characterized in that, The top of the rear battery module (22) is provided with a second limiting component (50). The second limiting component (50) includes a second fixed bracket (51). The second fixed bracket (51) is provided with a third limiting channel (52) and a fourth limiting channel (53). The third limiting channel (52) and the fourth limiting channel (53) both extend along the length direction of the battery pack. The second acquisition harness (33) includes an acquisition main segment (331), a first acquisition segment (332), and a second acquisition segment (333). Wherein, the first acquisition segment (332) and the second acquisition segment (333) are located in the third limiting channel (52) and the fourth limiting channel (53) respectively, and the first acquisition segment (332) and the second acquisition segment (333) converge at one end near the front battery module (21) to form the main acquisition segment (331), which is located on the front battery module (21); and / or, The second limiting component (50) further includes a second binding part, which is used at least to fix the first acquisition segment (332) and the second acquisition segment (333) in the third limiting channel (52) and the fourth limiting channel (53), respectively.

8. The battery pack according to claim 1, characterized in that, Both the front battery module (21) and the rear battery module (22) comprise two units, with the two front battery modules (21) and the two rear battery modules (22) spaced apart along the width direction of the battery pack; and / or, Both the front battery module (21) and the rear battery module (22) include a 1P26S module.

9. The battery pack according to any one of claims 1 to 8, characterized in that, The housing (10) has multiple rotatable rolling parts (60) on both opposite sides along the width direction of the battery pack, and the multiple rolling parts (60) are spaced apart along the length direction of the battery pack; and / or, A fuse (70) is provided in the accommodating space (11). The fuse (70) is electrically connected to the front battery module (21) and the rear battery module (22) respectively, and the fuse (70) includes a 1500V fuse (70).

10. A battery energy storage system, characterized in that, The battery energy storage system includes the battery pack according to any one of claims 1 to 9.

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