Battery pack and automobile

Abstract

The utility model provides a battery pack and an automobile, and relates to the technical field of automobile accessories. The battery pack comprises a frame, first cables, a power management system and a fixing assembly, a plurality of battery cell units are arranged in the frame, each battery cell unit comprises a plurality of batteries, the first cables are arranged on the battery cell units, the batteries are electrically connected with the first cables, the power management system is arranged in the frame, and the fixing assembly is arranged in the frame. The first cables are electrically connected with the power management system, fixing assemblies are arranged in the frame and located at the positions where the first cables are located, and the fixing assemblies are used for fixing the first cables in the frame; according to the battery pack and the automobile, the situation that the first cable between the battery and the power management system is damaged due to vibration and impact generated during automobile running is prevented.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile accessories, and in particular to a battery pack and an automobile. BACKGROUND

[0002] The power management system in the automobile battery pack is a component of the electric automobile, which is mainly responsible for online monitoring of voltage, current, temperature and other state quantities of the battery pack, and detecting the battery operation state and the battery pack discreteness, so as to ensure that the battery pack works in a safe and reliable condition.

[0003] The battery pack in the related art comprises a frame, a power management system is arranged in the frame, and a plurality of batteries are arranged in the frame. When it is necessary to electrically connect the plurality of batteries with the power management system to enable the power management system to monitor the battery state, the plurality of batteries are connected in series or in parallel through cables, and the plurality of batteries are electrically connected with the power management system through the cables, so as to realize the electrical connection between the plurality of batteries and the power management system.

[0004] However, when the vehicle is running, vibration and impact will be generated, and the vibration or impact of the vehicle running can cause damage to the cable. UTILITY MODEL CONTENT

[0005] The application provides a battery pack and an automobile, which solve the technical problem that the vibration or impact of the vehicle running in the related art can cause damage to the cable.

[0006] In one aspect, the application provides a battery pack, comprising a frame, a first cable, a power management system and a fixing assembly, a plurality of groups of battery cell units are arranged in the frame, each group of battery cell units comprises a plurality of batteries, the first cable is arranged on each battery cell unit, the plurality of batteries are electrically connected with the first cable, the power management system is arranged in the frame, each first cable is electrically connected with the power management system, the fixing assembly is arranged in the frame and located at the position of each first cable, and the fixing assembly is configured to fix the first cable in the frame.

[0007] In some embodiments, the fixing assembly comprises a fixing plate and a bracket, the bracket is arranged on the bottom wall of the frame, the fixing plate is arranged on the bracket, and the first cable is arranged on the fixing plate.

[0008] In some embodiments, a connector is further arranged between each first cable and the power management system, the connector is configured to be plugged into or unplugged from the power management system, so as to electrically connect or disconnect the first cable with the power management system.

[0009] In some embodiments, a second cable is further included, the second cable is arranged between each of the first cables and the connector, the second cable is arranged on the fixing plate, and the first cable is electrically connected to the connector through the second cable.

[0010] In some embodiments, the second cable has a notch arranged towards a direction away from the bottom wall of the frame, and the notch is used to accommodate a refrigerant pipeline of the battery pack.

[0011] In some embodiments, the power management system includes a master module and a slave module, the master module and the slave module are arranged in the frame, the master module and the slave module are electrically connected, and each of the first cables is electrically connected to the slave module.

[0012] In some embodiments, a battery pack circuit breaking unit, a high-voltage copper bar, and a discharge high-voltage interface are further included, the battery pack circuit breaking unit and the high-voltage copper bar are arranged in the frame, the discharge high-voltage interface is arranged on the frame, the high-voltage copper bar is electrically connected to a plurality of groups of the cell units and the battery pack circuit breaking unit, and the discharge high-voltage interface is electrically connected to the battery pack circuit breaking unit.

[0013] In some embodiments, a charging interface and a high-voltage wire harness are further included, the charging interface is arranged on the frame, the high-voltage wire harness is arranged in the frame, and the high-voltage wire harness is electrically connected to the charging interface and the battery pack circuit breaking unit.

[0014] In some embodiments, opposite sides of the frame are respectively arranged as a low-voltage mounting area and a high-voltage mounting area, the power management system and the fixing assembly are located in the low-voltage mounting area, part of the high-voltage copper bar and part of the high-voltage wire harness are located in the high-voltage mounting area, and the battery pack circuit breaking unit is arranged between the low-voltage mounting area and the high-voltage mounting area.

[0015] In another aspect, the application provides an automobile including a vehicle body and the battery pack arranged on the vehicle body.

[0016] The battery pack provided by the application can realize electrical connection of the plurality of batteries and the power management system through the first cable, so as to facilitate the power management system to monitor the voltage, current and temperature of the battery and detect the running state and discreteness of the battery, so as to ensure that the battery works in a safe and reliable condition; the first cable is fixed by the fixing assembly, so as to prevent the first cable from vibrating or swinging in the frame due to vibration or impact generated by the vehicle, thereby preventing the first cable from being damaged due to friction with other components in the battery pack, improving the safety of the first cable in use, and indirectly improving the detection effect of the power management system on the battery. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0018] Figure 1 A structural schematic diagram of the battery pack provided by the embodiment of the application is shown in the figure.

[0019] Figure 2 A structural schematic diagram of the frame, the battery cell unit, the fixing assembly, the second cable and the connector in the battery pack is shown in the figure. Figure 1

[0020] A structural schematic diagram of the battery cell unit, the fixing assembly, the second cable and the connector in the battery pack is shown in the figure. Figure 3 Figure 2 A structural schematic diagram of the battery cell unit, the fixing assembly, the second cable and the connector in the battery pack is shown in the figure.

[0021] Figure 4 Figure 3 An enlarged view of part A in the battery pack is shown in the figure.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 100, frame; 110, battery cell unit; 111, battery

[0024] 200, first cable

[0025] 300, power management system; 310, master control module; 320, slave control module

[0026] 400, fixing assembly; 410, fixing plate; 420, support

[0027] 500, connector

[0028] 600, second cable; 610, notch

[0029] 700, battery pack circuit breaking unit

[0030] ​​800, high-voltage copper bar; 810, high-voltage discharge interface; 820, charging interface; 830, high-voltage wire harness; 840, external low-voltage interface;

[0031] 900, low-voltage mounting area; 910, high-voltage mounting area.

[0032] The specific embodiments of the application have been shown and described in the above drawings, which will be described in more detail below. These drawings and written descriptions are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, the same numbers refer to the same or similar elements unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0034] As described in the background, the battery pack of the related art includes a frame, a power management system is arranged in the frame, and a plurality of batteries are arranged in the frame. When it is necessary to electrically connect the plurality of batteries with the power management system to enable the power management system to monitor the state of the batteries, the plurality of batteries are connected in series or in parallel by cables, and the plurality of batteries are electrically connected with the power management system by the cables, thereby realizing the electrical connection between the plurality of batteries and the power management system.

[0035] However, when the vehicle is running, vibrations and impacts are generated, and the vibrations or impacts of the vehicle running can cause the first cable to sway in the frame. If the first cable rubs against other components in the battery frame, the first cable will be damaged.

[0036] To solve the above technical problems, the embodiments of the present application provide a battery pack and a vehicle. The first cable and the second cable are fixed on the fixing plate, the fixing plate is fixed on the bottom wall of the frame through the support, the slave module of the power management system can monitor the state of the plurality of batteries through the connector, the second cable and the first cable, and when the vehicle is running, vibrations or impacts are generated. When the vehicle is running, vibrations or impacts are generated, the first cable and the second cable are arranged on the fixing plate, which prevents the first cable and the second cable from swaying in the frame, thereby preventing the first cable and the second cable from constantly rubbing against other components in the frame and causing damage. By partitioning the high-voltage components and the low-voltage components of the battery pack in the high-voltage mounting area and the low-voltage mounting area, it is helpful to reduce the electromagnetic interference of the high-voltage wire harness on the low-voltage wire harness and electronic devices.

[0037] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described again in some examples. The embodiments of the present application will be described below with reference to the drawings.

[0038] In combination Figures 1 to 4 A battery pack includes a frame 100, a first cable 200, a power management system 300, and a fixing assembly 400. A plurality of groups of battery cell units 110 are arranged in the frame 100, each group of battery cell units 110 including a plurality of batteries 111. Each battery cell unit 110 is provided with a first cable 200, and each battery 111 is electrically connected to the first cable 200. The power management system 300 is arranged in the frame 100, and each first cable 200 is electrically connected to the power management system 300. The fixing assembly 400 is arranged in the frame 100 at the position of each first cable 200, and the fixing assembly 400 is used to fix the first cable 200 in the frame 100.

[0039] In this embodiment, the battery cell unit 110 is provided with four groups, and the plurality of batteries 111 of each group of battery cell units 110 includes an upper battery layer and a lower battery layer. The first cable 200 is provided with two, and the two first cables 200 correspond to the upper battery layer and the lower battery layer, respectively. The two first cables 200 are located at the upper part of the upper battery layer. The plurality of batteries 111 of the upper battery layer are electrically connected to the upper first cable 200 through a connecting cable, and the plurality of batteries 111 of the lower battery layer are electrically connected to the lower first cable 200 through a connecting cable. The battery 111 is provided in a cylindrical shape. The first cable 200 and the connecting cable are both FFC flexible flat cables. The use of FFC flexible flat cables reduces the use of low-voltage collection lines, thereby reducing costs. In addition, FFC flexible flat cables are particularly useful in space-limited application scenarios due to their good flexibility, ability to be folded and bent at will, thin thickness, and small volume, which can effectively reduce the volume of electronic products, reduce production costs, and improve production efficiency. The conductors of the FFC flexible flat cable are usually bare copper or tinned copper wires, and the insulating materials are flame-retardant polyester insulating materials, polyester film, and polyimide film. The selection of these materials helps to improve the insulation and conductivity of the cable, thereby reducing failure points. The connection method of the FFC flexible flat cable is diverse, including lying, flipping, standing, straight insertion, and bending insertion, and is highly adaptable, suitable for data transmission in various electrical equipment. In other embodiments, the plurality of batteries 111 of the battery cell unit 110 can also be electrically connected to the same first cable 200.

[0040] By adopting the above technical scheme, by adopting the setting of the first cable 200, the first cable 200 can be electrically connected to the plurality of batteries 111 and the power management system 300, so as to facilitate the power management system 300 to monitor the voltage, current and temperature and other state quantities of the battery 111 online, and detect the running state of the battery 111 and the discreteness of the battery 111, so as to ensure that the battery 111 works in a safe and reliable condition; by adopting the setting of the fixing assembly 400, the fixing assembly 400 can fix the first cable 200, prevent the first cable 200 from vibrating or swinging in the frame 100 due to vibration or impact generated by the vehicle running, thereby preventing the first cable 200 from being damaged due to friction with other parts in the battery pack, improving the safety of the first cable 200 in use, and indirectly improving the detection effect of the power management system 300 on the battery 111.

[0041] In combination Figures 1 to 4 , the fixing assembly 400 includes a fixing plate 410 and a bracket 420, the bracket 420 is arranged on the bottom wall of the frame 100, and the fixing plate 410 is arranged on the bracket 420, and the first cable 200 is arranged on the fixing plate 410.

[0042] In the embodiment, the fixing plate 410 can be detachably connected to the bracket 420 in a bolt connection manner, so as to facilitate installation and disassembly of the fixing plate 410; or the fixing plate 410 can be welded to the bracket 420 in a welding manner; the shape of the bracket 420 can be adaptively adjusted as needed, and the bracket 420 can also be detachably connected to the frame 100 in a bolt connection or welding manner; the first cable 200 can be arranged in the fixing plate 410 or on the surface of the fixing plate 410 away from the bottom wall of the frame 100.

[0043] By adopting the above technical scheme, the fixing plate 410 and the bracket 420 have simple structure, which is convenient for production and manufacturing, and improves the production and manufacturing efficiency of the fixing assembly 400; by arranging the first cable 200 on the fixing plate 410, the bracket 420 and the fixing plate 410 fix the first cable 200, so as to prevent the first cable 200 from swinging in the frame 100, and improve the fixing strength of the first cable 200.

[0044] In combination Figures 1 to 4 , the battery pack further includes a connector 500, and the connector 500 is arranged between each first cable 200 and the power management system 300, and is configured to be plugged or unplugged with the power management system 300 to electrically connect or disconnect the first cable 200 and the power management system 300.

[0045] In the embodiment, the connector 500 is a prior art, and the specific structure thereof will not be described herein again; in other embodiments, the connector 500 can be replaced by a plug socket or a bolt connection or the like electrically connected form.

[0046] By adopting the above technical solution, by adopting the setting of the connector 500, by plugging or unplugging the connector 500 with the power management system 300, the electrical connection or disconnection of the first cable 200 and the power management system 300 can be realized, the convenience of electrical connection or disconnection of the first cable 200 and the power management system 300 is improved, and the reliability of electrical connection between the connector 500 and the power management system 300 is improved, preventing the condensation phenomenon in the battery 111 frame 100 from affecting the electrical connection of the connector 500 and the power management system 300 by part of the water, and improving the strength and sealing performance of the electrical connection of the first cable 200 and the power management system 300.

[0047] In combination Figures 1 to 4 The battery pack further comprises a second cable 600, the second cable 600 is arranged between each first cable 200 and the connector 500, the second cable 600 is arranged on the fixed plate 410, and the first cable 200 is electrically connected with the connector 500 through the second cable 600.

[0048] In the embodiment, the second cable 600 can be arranged in the fixed plate 410 or on the surface of the fixed plate 410 away from the bottom wall of the frame 100; the fixed plate 410 can also be arranged as a conductive plate, and the first cable 200 and the second cable 600 are arranged on the fixed plate 410, so that the fixed plate 410 realizes the electrical connection between the first cable 200 and the second cable 600; the second cable 600 adopts a FFC flexible flat cable, and the use of the FFC flexible flat cable reduces the use of low-voltage collection lines, thereby reducing the cost, and the FFC flexible flat cable is especially useful in space-limited application scenarios due to its good flexibility, random folding and bending, thin thickness, small volume and other characteristics, which can effectively reduce the volume of electronic products, reduce production cost and improve production efficiency; the conductor of the FFC flexible flat cable usually adopts bare copper or tinned copper wire, and the insulating material adopts flame-retardant polyester insulating material, polyester film, polyimide film and the like, and the selection of these materials helps to improve the insulation and conductivity of the cable, thereby reducing the failure points; the connection mode of the FFC flexible flat cable is diverse, including lying, flipping, standing, straight inserting and bending inserting and the like, and has strong adaptability and is suitable for data transmission in various electrical equipment.

[0049] By adopting the above technical scheme, through the setting of the second cable 600, and due to the setting of the fixing plate 410, the first cable 200 and the second cable 600 are conveniently electrically connected on the fixing plate 410, and the first cable 200 and the connector 500 are conveniently electrically connected through the second cable 600.

[0050] In combination Figures 1 to 4 The second cable 600 has a notch 610, the notch 610 is arranged towards the direction away from the bottom wall of the frame 100, and the notch 610 is used to accommodate the refrigerant pipeline of the battery pack.

[0051] In the embodiment, the second cable 600 is arranged in a “U” shape, and the notch 610 is arranged inside the “U” shaped second cable 600. By arranging the second cable 600 in a “U” shape, the “U” shaped second cable 600 is prevented from shaking in the frame 100, and the strength of the second cable 600 is improved. In other embodiments, the shape of the second cable 600 can be adaptively adjusted as needed, for example, the shape of the second cable 600 is arranged as an isosceles trapezoid.

[0052] By adopting the above technical scheme, through the setting of the notch 610, the refrigerant pipeline of the battery pack can be accommodated, thereby reducing the space occupation of the second cable 600 and the refrigerant pipeline in the vertical direction, so that when the refrigerant pipeline is arranged in the frame 100, the structure between the second cable 600 and the refrigerant pipeline is more compact, thereby reducing the space occupation of the entire battery pack in the vertical direction, thereby facilitating the installation of the battery 111 frame 100.

[0053] In combination Figures 1 to 4 The power management system 300 includes a master control module 310 and a slave control module 320, the master control module 310 and the slave control module 320 are arranged in the frame 100, the master control module 310 and the slave control module 320 are electrically connected, and each first cable 200 is electrically connected with the slave control module 320.

[0054] In the embodiment, two slave control modules 320 are arranged, and one master control module 310 is arranged. The two slave control modules 320 are electrically connected through a daisy chain wire harness, and the slave control module 320 and the master control module 310 are also electrically connected through a daisy chain wire harness. The two slave control modules 320 and the fixing plate 410 are located on the same side of the plurality of cell units 110, the fixing plate 410 is arranged between the slave control module 320 and the cell unit 110, and the connector 500 and the slave control module 320 are inserted or detached from the side of the cell unit 110.

[0055] By adopting the above technical scheme, the main control module 310 of the power management system 300 is mainly responsible for charge and discharge management, state estimation, fault protection, and communication with the whole vehicle system and the like; and the slave control module 320 is mainly responsible for the collection of the voltage and temperature of the single battery 111 and the execution of the battery 111 balancing and the like. By adopting the setting of the main control module 310 and the slave control module 320, it is suitable for the case that the number of batteries 111 is large, the wiring harness application can be reduced, and the field wiring work can be reduced.

[0056] In combination Figures 1 to 4 The battery pack further comprises a battery pack circuit breaking unit 700, a high-voltage copper bar 800 and a discharge high-voltage interface 810, the battery pack circuit breaking unit 700 and the high-voltage copper bar 800 are arranged in the frame 100, the discharge high-voltage interface 810 is arranged on the frame 100, the high-voltage copper bar 800 is electrically connected with the plurality of groups of cell units 110 and the battery pack circuit breaking unit 700, and the discharge high-voltage interface 810 is electrically connected with the battery pack circuit breaking unit 700.

[0057] By adopting the above technical scheme, the battery pack circuit breaking unit 700 integrates current sensors, main relays, pre-charge relays and pre-charge resistors and the like electrical devices, is responsible for controlling the charge and discharge process of the battery 111, and ensures that the energy throughput of the battery 111 is smoothly carried out; the high-voltage copper bar 800 has excellent electrical conductivity and can efficiently transmit electrical energy, reducing the energy loss of the battery pack during high-voltage discharge; by arranging the discharge high-voltage interface 810 on the frame 100, the management and maintenance are facilitated, and the charging and discharging efficiency and safety can be improved.

[0058] In combination Figures 1 to 4 The battery pack further comprises a charging interface 820 and a high-voltage wiring harness 830, the charging interface 820 is arranged on the frame 100, and the high-voltage wiring harness 830 is arranged in the frame 100, and the high-voltage wiring harness 830 is electrically connected with the charging interface 820 and the battery pack circuit breaking unit 700.

[0059] By adopting the above technical scheme, by adopting the setting of the charging interface 820 and the high-voltage wiring harness 830, the plurality of batteries 111 can be charged by using the high-voltage platform through the charging interface 820, and the new energy vehicles, especially electric vehicles, usually use a voltage platform as high as 300V to 600V or even higher, the high-voltage wiring harness 830 is designed for safe transmission of these high voltages and corresponding large currents, ensuring charging efficiency; and the high-voltage wiring harness 830 adopts a shielding structure, effectively reducing electromagnetic interference and radio frequency interference, protecting the electronic equipment of the vehicle from damage, and also avoiding interference to external electronic equipment; the high-voltage wiring harness 830 has strict electrical isolation measures to prevent short circuit and electric shock risks.

[0060] In combination ​The opposite sides of the frame 100 are respectively provided with a low-voltage installation area 900 and a high-voltage installation area 910, the power management system 300 and the fixed assembly 400 are located in the low-voltage installation area 900, part of the high-voltage copper bars 800 and part of the high-voltage wire harness 830 are located in the high-voltage installation area 910, and the battery pack circuit breaking unit 700 is arranged between the low-voltage installation area 900 and the high-voltage installation area 910.

[0061] In the embodiment, the low-voltage installation area 900 and the high-voltage installation area 910 are respectively located at the opposite sides of the cell unit 110; the fixed plate 410, the support 420, the second cable 600, the connector 500 and the slave module 320 are arranged in the low-voltage installation area 900; the master module 310 and the battery pack circuit breaking unit 700 are arranged between the low-voltage installation area 900 and the high-voltage installation area 910, and the master module 310 and the battery pack circuit breaking unit 700 are arranged on the same side of the frame 100; the charging interface 820 is located on the frame 100 and opposite to the battery pack circuit breaking unit 700; the discharging high-voltage interface 810 is located on the frame 100 and on the same side as the battery pack circuit breaking unit 700; the frame 100 is further provided with an external low-voltage interface 840, the external low-voltage interface 840 is electrically connected with the battery pack circuit breaking unit 700, and the external low-voltage interface 840 is located on the frame 100 and on the same side as the battery pack circuit breaking unit 700; the low-voltage installation area 900 is further used for installing other low-voltage assemblies of the battery pack; the high-voltage installation area 910 is further used for installing other high-voltage assemblies of the battery pack; and the remaining parts of the high-voltage copper bars 800 and the high-voltage wire harness 830 are arranged in the frame 100 and adjacent to the two sides of the high-voltage installation area 910.

[0062] By adopting the above technical scheme, by adopting the arrangement of the low-voltage installation area 900 and the high-voltage installation area 910, the high-voltage assemblies and the low-voltage assemblies of the battery pack can be isolated, the risk of electrical failure and short circuit can be reduced, and the safety of the battery pack can be improved; and it is helpful to quickly identify and access specific wire harnesses and parts, and is convenient for maintenance, inspection and replacement work; the high-voltage wire harness 830 can generate a strong electromagnetic field, by separating the low-voltage installation area 900 and the high-voltage installation area 910, it is helpful to reduce the electromagnetic interference of the high-voltage wire harness 830 on the low-voltage wire harness and electronic equipment, thereby improving the reliability of electromagnetic compatibility; and by arranging the wire harnesses of the high-voltage assemblies and the low-voltage assemblies separately, the wiring path can be optimized, the length and complexity of the wire harness can be reduced, and the weight and cost of the wire harness can be reduced.

[0063] The embodiment of the application further provides an automobile, which comprises a vehicle body and the battery pack of any one of the above embodiments arranged on the vehicle body.

[0064] The specific structure of the battery pack has been described in detail in the above embodiments, and will not be repeated here.

[0065] The automobile provided by the embodiment of the application can monitor the state of the plurality of batteries 111 through the connector 500, the second cable 600 and the first cable 200 by fixing the battery pack, the first cable 200 and the second cable 600 on the fixed plate 410, fixing the fixed plate 410 on the bottom wall of the frame 100 through the support 420, and the slave module 320 of the power management system 300, and when the vehicle generates vibration or impact during driving, the first cable 200 and the second cable 600 are both arranged on the fixed plate 410, preventing the first cable 200 and the second cable 600 from shaking in the frame 100, thereby preventing the first cable 200 and the second cable 600 from being damaged due to constant friction with other components in the frame 100; by partitioning the high-voltage components and the low-voltage components of the battery pack in the high-voltage mounting area 910 and the low-voltage mounting area 900, the electromagnetic interference of the high-voltage wire harness 830 on the low-voltage wire harness and electronic equipment is reduced.

[0066] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0067] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.

Claims

1. A battery pack, characterized by, The application relates to a battery pack, which comprises a frame (100), a first cable (200), a power management system (300) and a fixing assembly (400), a plurality of groups of battery cell units (110) are arranged in the frame (100), each group of battery cell units (110) comprises a plurality of batteries (111), the first cable (200) is arranged on each battery cell unit (110), and the batteries (111) are electrically connected with the first cable (200); the power management system (300) is arranged in the frame (100), each first cable (200) is electrically connected with the power management system (300), and the fixing assembly (400) is arranged in the frame (100) and at the position of each first cable (200), and the fixing assembly (400) is used for fixing the first cable (200) in the frame (100).

2. The battery pack of claim 1, wherein, The fixing assembly (400) comprises a fixing plate (410) and a support (420), the support (420) is arranged on the bottom wall of the frame (100), the fixing plate (410) is arranged on the support (420), and the first cable (200) is arranged on the fixing plate (410).

3. The battery pack of claim 2, wherein, The application further comprises a connector (500), the connector (500) is arranged between each first cable (200) and the power management system (300), and the connector (500) is configured to be plugged into or separated from the power management system (300) so as to electrically connect or disconnect the first cable (200) and the power management system (300).

4. The battery pack of claim 3, wherein, The application further comprises a second cable (600), the second cable (600) is arranged between each first cable (200) and the connector (500), the second cable (600) is arranged on the fixing plate (410), and the first cable (200) is electrically connected with the connector (500) through the second cable (600).

5. The battery pack of claim 4, wherein, The second cable (600) has a notch (610), the notch (610) is arranged in a direction away from the bottom wall of the frame (100), and the notch (610) is used for accommodating a refrigerant pipeline of the battery pack.

6. The battery pack of any one of claims 1-5, wherein, The power management system (300) comprises a master control module (310) and a slave control module (320), the master control module (310) and the slave control module (320) are arranged in the frame (100), the master control module (310) and the slave control module (320) are electrically connected, and each first cable (200) is electrically connected with the slave control module (320).

7. The battery pack of any one of claims 1-5, wherein, The battery pack further comprises a battery pack circuit breaking unit (700) and a high-voltage copper bar (800), both of which are arranged in the frame (100), and a high-voltage discharge interface (810) arranged on the frame (100), the high-voltage copper bar (800) is electrically connected with a plurality of groups of the cell units (110) and the battery pack circuit breaking unit (700), and the high-voltage discharge interface (810) is electrically connected with the battery pack circuit breaking unit (700).

8. The battery pack of claim 7, wherein, The battery pack further comprises a charging interface (820) arranged on the frame (100) and a high-voltage wire harness (830) arranged in the frame (100), the high-voltage wire harness (830) is electrically connected with the charging interface (820) and the battery pack circuit breaking unit (700).

9. The battery pack of claim 8, wherein, The frame (100) is provided with a low-voltage mounting area (900) and a high-voltage mounting area (910) on opposite sides, the power management system (300) and the fixing assembly (400) are located in the low-voltage mounting area (900), part of the high-voltage copper bar (800) and part of the high-voltage wire harness (830) are located in the high-voltage mounting area (910), and the battery pack circuit breaking unit (700) is arranged between the low-voltage mounting area (900) and the high-voltage mounting area (910).

10. An automobile characterized by comprising: The battery pack is arranged on a vehicle body, and the battery pack comprises the frame (100), the cell units (110), the power management system (300), the fixing assembly (400), the battery pack circuit breaking unit (700), the high-voltage copper bar (800), the high-voltage discharge interface (810), the charging interface (820) and the high-voltage wire harness (830).

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