Battery pack

Abstract

The utility model provides a kind of battery pack, it is related to battery technical field.The utility model provides the battery pack including shell, multiple battery modules, at least two first power transmission lines and at least two second power transmission lines, multiple battery modules are stacked in the shell along the thickness direction of itself, the positive and negative pole of battery module is located the same side of battery module, and the positive and negative pole of multiple battery modules is all located the first side of battery pack;The first end of first power transmission line is electrically connected to the positive pole of battery module, and the first end of second power transmission line is electrically connected to the negative pole of battery module;In the width direction along battery module, there is spacing between adjacent two first power transmission lines, between adjacent two second power transmission lines and between first power transmission line and second power transmission line.The utility model provides a kind of battery pack, it is convenient to maintain, and high safety.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery pack. Background Technology

[0002] Existing battery pack wiring technologies have several problems. Firstly, the wiring is typically distributed on different sides of the battery pack; for example, different power lines are positioned on opposite sides. This complicates maintenance, requiring technicians to troubleshoot and maintain the circuits from different sides when a fault occurs, increasing both difficulty and time cost. Secondly, the lack of unified planning for wiring routes leads to potential intersections or contacts between different lines, potentially causing short circuits and other safety hazards. Utility Model Content

[0003] To address at least one of the problems mentioned in the background art, this utility model provides a battery pack that is easy to maintain and highly safe.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model provides a battery pack, including a shell, multiple battery modules, at least two first transmission lines and at least two second transmission lines. The multiple battery modules are stacked in the shell along their own thickness direction. The positive and negative terminals of the battery modules are located on the same side of the battery modules, and the positive and negative terminals of the multiple battery modules are all located on the first side of the battery pack.

[0006] The first end of the first power transmission line is electrically connected to the positive terminal of the battery module, and the second end of the first power transmission line extends along the thickness direction of the battery module to the second side of the battery pack. The first end of the second power transmission line is electrically connected to the negative terminal of the battery module, and the second end of the second power transmission line extends along the thickness direction of the battery module to the second side of the battery pack. The first side and the second side of the battery pack are adjacent to each other.

[0007] Along the width direction of the battery module, there are gaps between two adjacent first power lines, between two adjacent second power lines, and between the first power lines and the second power lines.

[0008] As an optional implementation, it also includes a plurality of limiting components disposed on the first side of the battery pack. The limiting components include wire clamps, with the first power line and the second power line clamped in the corresponding wire clamps.

[0009] As an optional implementation, the limiting component also includes a mounting base disposed on the housing, and a wire clamp disposed on the mounting base.

[0010] As an optional implementation, a limit component is provided between two adjacent battery modules along the thickness direction of the battery module.

[0011] As an optional implementation, a bracket is also included, which is disposed on the second side of the battery pack, and both the first power line and the second power line are fixed on the bracket.

[0012] As an optional implementation, the bracket has slots spaced apart along the width direction of the battery module, and both the first power supply line and the second power supply line are secured in the slots.

[0013] As an optional implementation, a signal line is also included. The signal line is laid on the first side of the battery pack, connected to the battery module, and extends to the second side of the battery pack. There is a gap between the signal line and the first power transmission line and the second power transmission line.

[0014] As an optional implementation, it also includes a liquid cooling pipe, which is arranged on the first side of the battery pack, and there is a gap between the liquid cooling pipe and the first power transmission line and the second power transmission line along the width direction of the battery module.

[0015] As an optional implementation, it also includes connecting wires, with multiple battery modules forming at least two series modules, and at least two battery modules connected in series via connecting wires to form a series module, with the first end of the first transmission wire electrically connected to the total positive terminal of the series module, and the first end of the second transmission wire electrically connected to the total negative terminal of the series module, so as to connect at least two series modules in parallel.

[0016] As an optional implementation, the connecting wire and the first and second transmission wires are spaced apart along the width direction of the battery pack.

[0017] The battery pack provided by this utility model includes a shell, multiple battery modules, at least two first power lines, and at least two second power lines. The multiple battery modules are stacked in the shell along their own thickness direction. The positive and negative terminals of the battery modules are located on the same side of the battery modules, and the positive and negative terminals of the multiple battery modules are all located on the first side of the battery pack. The first end of the first power line is electrically connected to the positive terminal of the battery module, and the second end of the first power line extends along the thickness direction of the battery module to the second side of the battery pack. The first end of the second power line is electrically connected to the negative terminal of the battery module, and the second end of the second power line extends along the thickness direction of the battery module to the second side of the battery pack. The first side and the second side of the battery pack are adjacent. Along the width direction of the battery modules, there are gaps between two adjacent first power lines, between two adjacent second power lines, and between the first power lines and the second power lines.

[0018] The battery pack provided by this utility model stacks multiple battery modules along their thickness direction, with the positive and negative terminals of each battery module located on the same side of the battery pack. The positive and negative terminals of each battery module are situated on the first side of the battery pack. Simultaneously, the first end of a first transmission line is electrically connected to the positive terminal of a battery module, and the second end extends along the thickness direction to the second side of the battery pack. The first end of a second transmission line is electrically connected to the negative terminal of a battery module, and the second end also extends to the second side. This achieves a more concentrated transmission line layout. As a result, when maintenance is required, maintenance personnel do not need to perform tedious inspections and maintenance on different sides of the battery pack as in traditional technologies; they can operate only in a relatively concentrated area, greatly reducing maintenance difficulty and time costs, and effectively solving the problem of complex maintenance in existing technologies. Furthermore, along the width direction of the battery module, there are gaps between adjacent first transmission lines, adjacent second transmission lines, and between first and second transmission lines. This design avoids different lines crossing or contacting each other, thereby reducing safety hazards such as short circuits and greatly improving the safety of the battery pack, solving the safety problems caused by the lack of planning in the routing of existing lines. In summary, the battery pack provided by this utility model improves the convenience and safety of battery pack maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a first structure of a battery pack provided in an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of a second structure of the battery pack provided in an embodiment of the present utility model;

[0023] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100-battery pack;

[0026] 110 - Outer casing;

[0027] 120-Battery Module;

[0028] 130-First transmission line;

[0029] 140 - Second transmission line;

[0030] 150 - Limiting component;

[0031] 151-Wire clamp;

[0032] 152 - Mounting bracket;

[0033] 160-Standard;

[0034] 170 - Signal line;

[0035] 180-Liquid cooling pipe;

[0036] 190 - Connecting cable. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] In this application, the terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” “outer,” “vertical,” “horizontal,” “lateral,” and “longitudinal” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this utility model and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0040] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0041] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0042] Existing battery pack wiring is typically distributed across different sides of the battery pack; for example, different power lines are positioned on opposite sides of the pack. This complicates maintenance, requiring technicians to troubleshoot and maintain the circuits from different sides when a fault occurs, increasing both the difficulty and time cost of repairs. Furthermore, the lack of unified planning for wiring routes means that different lines can easily cross or come into contact, potentially leading to short circuits and other safety hazards.

[0043] In view of this, the present invention provides a battery pack, including a shell, multiple battery modules, at least two first power lines, and at least two second power lines. The multiple battery modules are stacked within the shell along their thickness direction, with the positive and negative terminals of each battery module located on the same side of the battery module, and both positive and negative terminals of the multiple battery modules located on the first side of the battery pack. The first end of each first power line is electrically connected to the positive terminal of a battery module, and the second end of each first power line extends along the thickness direction of the battery module to the second side of the battery pack. The first end of each second power line is electrically connected to the negative terminal of a battery module, and the second end of each second power line extends along the thickness direction of the battery module to the second side of the battery pack. The first and second sides of the battery pack are adjacent. Along the width direction of the battery modules, there are gaps between adjacent first power lines, between adjacent second power lines, and between the first and second power lines. By placing the first and second power lines on the same side of the battery pack, maintenance personnel do not need to perform tedious troubleshooting and maintenance on different sides of the battery pack as with traditional technologies, greatly reducing maintenance difficulty and time costs. By ensuring spacing between adjacent first transmission lines, adjacent second transmission lines, and between first and second transmission lines, crossovers and contact between different lines can be avoided, thereby reducing safety hazards such as short circuits and significantly improving the safety of the battery pack.

[0044] Figure 1 This is a schematic diagram of a first structure of a battery pack provided in an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of a second structure of the battery pack provided in an embodiment of the present utility model; Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0045] You can refer to this. Figure 1 and Figure 4 This utility model embodiment provides a battery pack 100, including a shell 110, a plurality of battery modules 120, at least two first power transmission lines 130, and at least two second power transmission lines 140. The plurality of battery modules 120 are stacked within the shell 110 along their own thickness direction. The positive and negative terminals of the battery modules 120 are located on the same side of the battery modules 120, and the positive and negative terminals of the plurality of battery modules 120 are all located on the first side of the battery pack 100. The first end of the first power transmission line 130 is electrically connected to the positive terminal of the battery module 120, and the second end of the first power transmission line 130 is electrically connected to the positive terminal of the battery module 120. The first end of the first power line 130 extends along the thickness direction of the battery module 120 to the second side of the battery pack 100. The first end of the second power line 140 is electrically connected to the negative terminal of the battery module 120. The second end of the second power line 140 extends along the thickness direction of the battery module 120 to the second side of the battery pack 100. The first side and the second side of the battery pack 100 are adjacent. Along the width direction of the battery module 120, there is a gap between two adjacent first power lines 130, between two adjacent second power lines 140, and between the first power line 130 and the second power line 140.

[0046] The battery pack 100 provided in this embodiment of the utility model stacks multiple battery modules 120 along their own thickness direction, with the positive and negative terminals of the battery modules 120 located on the same side of the battery modules 120. The positive and negative terminals of each battery module 120 are located on the first side of the battery pack 100. At the same time, the first end of the first transmission line 130 is electrically connected to the positive terminal of the battery module 120, and the second end extends along the thickness direction to the second side of the battery pack 100. The first end of the second transmission line 140 is electrically connected to the negative terminal of the battery module 120, and the second end also extends to the second side. This achieves a more concentrated layout of the transmission lines. In this way, when maintenance is required, maintenance personnel do not need to perform tedious inspection and maintenance on different transmission lines on different sides of the battery pack 100 as in traditional technology. They can operate on all transmission lines in a relatively concentrated area, which greatly reduces the difficulty of maintenance, reduces time costs, and effectively solves the problem of complex maintenance in the prior art. Meanwhile, along the width direction of the battery module 120, there are gaps between adjacent first power lines 130, between adjacent second power lines 140, and between first power lines 130 and second power lines 140. This design avoids different lines crossing or contacting each other, thereby reducing safety hazards such as short circuits and greatly improving the safety of the battery pack 100. It also solves the safety problems caused by the lack of planning in the routing of lines in the prior art. In summary, the battery pack 100 provided by this embodiment of the present invention improves the convenience of maintenance and safety of the battery pack 100.

[0047] In the above embodiments, a plurality of limiting components 150 may also be included. The plurality of limiting components 150 are disposed on the first side of the battery pack 100. Each limiting component 150 includes a wire clamp 151, and the first power transmission line 130 and the second power transmission line 140 are clamped in the corresponding wire clamp 151. This embodiment further enhances the regularity of the power transmission line layout by setting multiple limiting components 150 on the first side of the battery pack 100 and clamping the first power transmission line 130 and the second power transmission line 140 therein using wire clamps 151. Specifically, the wire clamps 151 can physically limit the first power transmission line 130 and the second power transmission line 140, preventing them from shifting due to vibration and other factors during the operation of the battery pack 100, ensuring that the spacing between adjacent power transmission lines remains stable, structurally eliminating the possibility of line crossing or contact, further reducing the risk of short circuits and improving safety. At the same time, the fixing effect of the wire clamps 151 on the power transmission lines makes the line layout, which was originally concentrated on the second side of the battery pack 100, more orderly. Maintenance personnel can quickly locate the faulty line through the orderly arrangement of the wire clamps 151, reducing the troubleshooting time caused by messy lines, making maintenance operations more efficient, effectively solving the problems of easy line displacement and difficult maintenance location in the prior art, and further achieving a dual improvement in maintenance convenience and safety performance from the structural design level.

[0048] In the above embodiments, the limiting component 150 may further include a mounting base 152, which is disposed on the housing 110, and the wire clamp 151 is disposed on the mounting base 152. It can be understood that the mounting base 152, as an intermediate carrier connecting the housing 110 and the wire clamp 151, can, on the one hand, pre-plan the installation position according to the internal space of the battery pack 100, making the layout of the wire clamp 151 more closely conform to the direction of the power transmission lines, ensuring that the first power transmission line 130 and the second power transmission line 140 extend along the preset path after clamping, avoiding installation deviations caused by directly fixing the wire clamp 151; on the other hand, the rigid connection between the mounting base 152 and the housing 110 can enhance the fixing strength of the wire clamp 151, especially when the battery pack 100 is subjected to vibration or impact, effectively suppressing the displacement and deformation of the wire clamp 151, maintaining the stability of the power transmission line spacing, and further reducing the risk of line contact. In addition, the modular mounting base 152 design enables standardized installation and removal of the wire clamp 151. When a certain area of ​​the line needs maintenance, only the wire clamp 151 on the corresponding mounting base 152 needs to be operated, without the need to disassemble the entire line. Combined with the positioning function of the wire clamp 151 for the transmission line, the maintenance process is more targeted, reducing the extra working hours caused by structural disassembly and assembly, and further enhancing the reliability of the battery pack 100 wiring and the convenience of maintenance.

[0049] In the above embodiments, limiting components 150 can be provided between adjacent battery modules 120 along the thickness direction of the battery module 120. By providing limiting components 150 between adjacent battery modules 120, the space utilization rate inside the battery pack 100 can be effectively improved. The limiting components 150 can utilize the gaps between modules without occupying additional space, making the layout more compact. The limiting components 150 guide the orderly arrangement of the transmission lines by precisely limiting their positions, avoiding chaotic and intersecting lines and reducing safety risks. At the same time, they provide stable support for the transmission lines (first transmission line 130 and second transmission line 140), reducing displacement caused by vibration and ensuring connection stability. During maintenance, the regular distribution of the limiting components 150 facilitates quick location of faulty lines, thereby improving maintenance efficiency.

[0050] In the above embodiments, a bracket 160 may also be included. The bracket 160 is disposed on the second side of the battery pack 100, and the first transmission line 130 and the second transmission line 140 are both fixed on the bracket 160. The rigid fixation of the transmission lines by the bracket 160 can suppress the swaying of the transmission lines on the second side of the battery pack 100. Combined with the limiting effect of the clamp 151 on the first side of the battery pack 100, the entire path of the transmission lines extending from the positive and negative terminals of the battery module 120 to the second side is constrained, ensuring that the spacing between adjacent transmission lines remains stable, effectively avoiding cross-contact caused by line displacement, and enhancing short-circuit protection. In addition, the bracket 160 makes the power transmission line arrangement on the second side more regular. Maintenance personnel can quickly locate the positive and negative lines of the corresponding battery module 120 through the fixed position of the line on the bracket 160. Especially in the multi-module stacked structure, the bracket 160 can integrate the scattered power transmission line ends into an orderly bundle. Combined with the centralized design of the positive and negative poles on the first side, it simplifies the line troubleshooting steps during maintenance and improves the overall reliability of the battery pack 100 through structural fixation.

[0051] In the above embodiment, the bracket 160 may have slots spaced apart along the width direction of the battery module 120, and the first power transmission line 130 and the second power transmission line 140 are both secured in the slots. On the one hand, the physical limitation of the slots can force the adjacent power transmission lines to maintain a fixed distance on the second side, ensuring that the first power transmission line 130 and the second power transmission line 140, as well as adjacent power transmission lines of the same type, always maintain a safe distance, structurally eliminating the possibility of line cross contact, and further enhancing short-circuit protection performance; on the other hand, the guiding effect of the slots on the power transmission lines can regulate the layout of the lines on the second side, so that when the power transmission lines extend from the positive and negative terminals of the battery module 120 to the slots, they naturally form an orderly array along the width direction. Combined with the path constraint of the first side clamp 151, the internal space utilization of the battery pack 100 can be improved. In addition, the modular slot design allows for flexible adjustment of spacing specifications based on the number of transmission lines. This makes it suitable for complex wiring scenarios with multiple modules stacked on top of each other, and also enables quick location of faulty lines during maintenance through the orderly arrangement of the slots. For example, one side of the slot can be marked so that the transmission line in a certain slot corresponds to the positive and negative terminals of a specific battery module 120. Maintenance personnel can directly locate the problematic module by the position of the slot, thereby reducing troubleshooting time and further improving maintenance efficiency.

[0052] In the above embodiments, a signal line 170 may also be included. The signal line 170 is disposed on the first side of the battery pack 100, connected to the battery module 120, and extends to the second side of the battery pack 100. A gap exists between the signal line 170 and the first power transmission line 130 and the second power transmission line 140. The fact that both the signal line 170 and the power transmission lines are disposed on the first side of the battery pack 100 allows for a more centralized overall wiring layout, further improving the convenience of maintenance and saving space. The gap between the signal line 170 and the power transmission lines effectively reduces electromagnetic interference, ensuring the stability of voltage, temperature, and other signal transmissions from the battery module 120, and preventing signal acquisition from being affected by fluctuations in power line current.

[0053] In the above embodiments, a liquid cooling pipe 180 may also be included. The liquid cooling pipe 180 is arranged on the first side of the battery pack 100, and there is a gap between the liquid cooling pipe 180 and the first transmission line 130 and the second transmission line 140 along the width direction of the battery module 120. By arranging the liquid cooling pipe 180 on the first side of the battery pack 100 and spacing it from the transmission lines and signal lines 170 along the width direction of the battery module 120, not only can the pipes and lines be more concentrated, facilitating centralized management and maintenance and further improving maintenance efficiency, but it also makes full use of the space on the first side of the battery pack 100, making the structure of the battery pack 100 more compact. Furthermore, this design allows the liquid cooling pipe 180 to be close to the transmission lines, thereby providing a certain cooling effect on the transmission lines, helping to ensure stable operation of the lines and reducing potential faults caused by overheating.

[0054] In the above embodiments, a connecting line 190 may also be included. Multiple battery modules 120 form at least two series modules. At least two battery modules 120 are connected in series through the connecting line 190 to form a series module. The first end of the first transmission line 130 is electrically connected to the total positive terminal of the series module, and the first end of the second transmission line 140 is electrically connected to the total negative terminal of the series module, so as to connect at least two series modules in parallel. In this embodiment, at least two battery modules 120 are connected in series to form a series module via connecting line 190. The first transmission line 130 is used to electrically connect the total positive terminal of the series module, and the second transmission line 140 is used to electrically connect the total negative terminal, thereby realizing the parallel connection of multiple series modules. This design can flexibly adjust the output voltage by superimposing the voltage inside the series module. At the same time, the parallel structure is used to maintain the total capacity of the battery pack 100, so that the energy density and output power are optimally matched. When a single series module malfunctions, the parallel structure can limit the impact of the fault to a single module, avoiding the paralysis of the entire circuit. With the independent limiting components 150 between each module, the stability of the electrical connection is ensured, and the modular design improves the fault isolation capability and maintenance convenience of the battery pack 100.

[0055] In the above embodiments, the connecting line 190 and the first transmission line 130 and the second transmission line 140 can be spaced apart along the width direction of the battery pack 100. This not only avoids electromagnetic interference between the connecting line 190 and the transmission line by utilizing the space, ensuring the stability of signal transmission between series modules, but also prevents short circuits caused by vibration through the spacing design. Combined with the rigid fixation of the line by the limiting component 150, the connecting line 190 and the transmission line are arranged in an orderly manner in the width direction. At the same time, this spaced layout can also optimize the heat dissipation airflow path inside the battery pack 100, avoid local temperature rise caused by dense line arrangement, and quickly distinguish between series and parallel lines based on the spacing markings in the width direction during maintenance, improving fault location efficiency and achieving synergistic optimization of electrical safety, heat dissipation performance and maintenance convenience.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery pack (100), characterized in that, The battery pack includes a housing (110), multiple battery modules (120), at least two first power lines (130) and at least two second power lines (140). The multiple battery modules (120) are stacked in the housing (110) along their own thickness direction. The positive and negative terminals of the battery modules (120) are located on the same side of the battery modules (120), and the positive and negative terminals of the multiple battery modules (120) are all located on the first side of the battery pack (100). The first end of the first power transmission line (130) is electrically connected to the positive terminal of the battery module (120), and the second end of the first power transmission line (130) extends along the thickness direction of the battery module (120) to the second side of the battery pack (100). The first end of the second power transmission line (140) is electrically connected to the negative terminal of the battery module (120), and the second end of the second power transmission line (140) extends along the thickness direction of the battery module (120) to the second side of the battery pack (100). The first side and the second side of the battery pack (100) are adjacent to each other. Along the width direction of the battery module (120), there is a spacing between two adjacent first power lines (130), between two adjacent second power lines (140), and between the first power line (130) and the second power line (140).

2. The battery pack (100) according to claim 1, characterized in that, It also includes a plurality of limiting components (150), which are disposed on the first side of the battery pack (100). Each limiting component (150) includes a clamp (151), in which the first power transmission line (130) and the second power transmission line (140) are clamped.

3. The battery pack (100) according to claim 2, characterized in that, The limiting component (150) further includes a mounting base (152), which is disposed on the housing (110), and the wire clamp (151) is disposed on the mounting base (152).

4. The battery pack (100) according to claim 3, characterized in that, Along the thickness direction of the battery module (120), the limiting component (150) is provided between each two adjacent battery modules (120).

5. The battery pack (100) according to claim 4, characterized in that, It also includes a bracket (160) disposed on the second side of the battery pack (100), and the first power line (130) and the second power line (140) are both fixed on the bracket (160).

6. The battery pack (100) according to claim 5, characterized in that, The bracket (160) has slots spaced apart along the width direction of the battery module (120), and the first power transmission line (130) and the second power transmission line (140) are both secured in the slots.

7. The battery pack (100) according to any one of claims 1-6, characterized in that, It also includes a signal line (170), which is laid on the first side of the battery pack (100), the signal line (170) is connected to the battery module (120) and extends to the second side of the battery pack (100), and there is a gap between the signal line (170) and the first power transmission line (130) and the second power transmission line (140).

8. The battery pack (100) according to any one of claims 1-6, characterized in that, It also includes a liquid cooling pipe (180), which is arranged on the first side of the battery pack (100). Along the width direction of the battery module (120), there is a gap between the liquid cooling pipe (180) and the first power transmission line (130) and the second power transmission line (140).

9. The battery pack (100) according to any one of claims 1-6, characterized in that, It also includes a connecting line (190), and the plurality of battery modules (120) form at least two series modules. At least two battery modules (120) are connected in series through the connecting line (190) to form one series module. The first end of the first power transmission line (130) is electrically connected to the total positive terminal of the series module, and the first end of the second power transmission line (140) is electrically connected to the total negative terminal of the series module, so as to connect at least two series modules in parallel.

10. The battery pack (100) according to claim 9, characterized in that, Along the width direction of the battery pack (100), the connecting line (190) and the first power transmission line (130) and the second power transmission line (140) are all spaced apart.

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