Distribution box assembly for battery pack, battery pack and vehicle

Abstract

The utility model discloses a power distribution box assembly for a battery pack, the battery pack and a vehicle, the power distribution box assembly comprises a base, a first connecting piece, a second connecting piece and a limiting piece, the first connecting piece is arranged on the base and is suitable for being electrically connected with a battery module in the battery pack, and the second connecting piece is arranged on the base; the second connecting piece is arranged on the base body and is suitable for being used as an output end of the battery pack to be connected with an external electric appliance element; the relay is arranged on the base, the relay is provided with a first contact end and a second contact end which are connected with the first connecting piece and the second connecting piece respectively, and the relay is used for controlling connection or disconnection of the first contact end and the second contact end. And the limiting piece is matched with at least part of the outer wall of the relay and is detachably connected with the base, and the limiting piece is used for limiting the relay to be separated from the base, so that the processing difficulty of the distribution box assembly can be reduced, and the installation matching degree can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of household appliances, in particular to a power distribution box assembly for a battery pack, a battery pack and a vehicle. BACKGROUND

[0002] In the related art, the relay, the connecting piece, the power distribution box and other components are first installed on the base, and then the relay and the connecting piece and other power distribution box components are connected to each other. Since the relay, the connecting piece, the base and other power distribution box components are provided with a plurality of sockets, the power distribution box components are connected through the sockets. When the relay, the connecting piece and other power distribution box components are first installed on the base, it is necessary to ensure that the installation precision of the relay, the connecting piece and other power distribution box components on the base is high, so as to ensure the smooth connection of the relay and the connecting piece and other power distribution box components. In actual application, the relay and the connecting piece and other power distribution box components often cannot be connected to each other. Therefore, how to reduce the processing difficulty of the power distribution box assembly and improve the installation matching degree has become a technical problem to be solved by the present application. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present application is to provide a power distribution box assembly for a battery pack, which can reduce the processing difficulty of the power distribution box assembly and improve the installation matching degree.

[0004] The present application also provides a battery pack with the power distribution box assembly.

[0005] The present application also provides a vehicle with the battery pack.

[0006] The power distribution box assembly for a battery pack according to the embodiments of the present application comprises a base, a first connecting piece arranged on the base and adapted to be electrically connected with a battery module in the battery pack, a second connecting piece arranged on the base body and adapted to be connected with an external electrical element as an output end of the battery pack, a relay arranged on the base, the relay being provided with a first contact end and a second contact end respectively connected with the first connecting piece and the second connecting piece, the relay being used for controlling the conduction or disconnection of the first contact end and the second contact end, and a limiting piece cooperating with at least part of the outer wall of the relay and being detachably connected with the base, the limiting piece being used for limiting the relay from being separated from the base.

[0007] According to the power distribution box assembly for the battery pack, the base is connected with the first connecting piece and the second connecting piece, and the relay is connected with the first connecting piece and the second connecting piece. After the relay is installed in place, the relay is fixed in the appropriate position by the limiting piece which is detachably connected with the base and cooperates with at least part of the outer wall of the relay. The one-time high-precision installation requirement of the first connecting piece, the second connecting piece and the relay is avoided, and the installation efficiency of the entire power distribution box assembly is improved, the assembly process of the power distribution box assembly is improved, and the installation process of the power distribution box assembly is more stable and reliable.

[0008] According to the power distribution box assembly for the battery pack, the base is connected with the first connecting piece and the second connecting piece, and the relay is connected with the first connecting piece and the second connecting piece. After the relay is installed in place, the relay is fixed in the appropriate position by the limiting piece which is detachably connected with the base and cooperates with at least part of the outer wall of the relay. The one-time high-precision installation requirement of the first connecting piece, the second connecting piece and the relay is avoided, and the installation efficiency of the entire power distribution box assembly is improved, the assembly process of the power distribution box assembly is improved, and the installation process of the power distribution box assembly is more stable and reliable.

[0009] According to the power distribution box assembly for the battery pack, the base is connected with the first connecting piece and the second connecting piece, and the relay is connected with the first connecting piece and the second connecting piece. After the relay is installed in place, the relay is fixed in the appropriate position by the limiting piece which is detachably connected with the base and cooperates with at least part of the outer wall of the relay. The one-time high-precision installation requirement of the first connecting piece, the second connecting piece and the relay is avoided, and the installation efficiency of the entire power distribution box assembly is improved, the assembly process of the power distribution box assembly is improved, and the installation process of the power distribution box assembly is more stable and reliable.

[0010] According to the power distribution box assembly for the battery pack, the base is connected with the first connecting piece and the second connecting piece, and the relay is connected with the first connecting piece and the second connecting piece. After the relay is installed in place, the relay is fixed in the appropriate position by the limiting piece which is detachably connected with the base and cooperates with at least part of the outer wall of the relay. The one-time high-precision installation requirement of the first connecting piece, the second connecting piece and the relay is avoided, and the installation efficiency of the entire power distribution box assembly is improved, the assembly process of the power distribution box assembly is improved, and the installation process of the power distribution box assembly is more stable and reliable.

[0011] According to the power distribution box assembly for the battery pack, the base is connected with the first connecting piece and the second connecting piece, and the relay is connected with the first connecting piece and the second connecting piece. After the relay is installed in place, the relay is fixed in the appropriate position by the limiting piece which is detachably connected with the base and cooperates with at least part of the outer wall of the relay. The one-time high-precision installation requirement of the first connecting piece, the second connecting piece and the relay is avoided, and the installation efficiency of the entire power distribution box assembly is improved, the assembly process of the power distribution box assembly is improved, and the installation process of the power distribution box assembly is more stable and reliable.

[0012] According to the power distribution box assembly for the battery pack, the base is connected with the first connecting piece and the second connecting piece, and the relay is connected with the first connecting piece and the second connecting piece. After the relay is installed in place, the relay is fixed in the appropriate position by the limiting piece which is detachably connected with the base and cooperates with at least part of the outer wall of the relay. The one-time high-precision installation requirement of the first connecting piece, the second connecting piece and the relay is avoided, and the installation efficiency of the entire power distribution box assembly is improved, the assembly process of the power distribution box assembly is improved, and the installation process of the power distribution box assembly is more stable and reliable.

[0013] According to some embodiments of the present application, the power distribution box assembly for the battery pack, the base is provided with a housing portion, the housing portion is formed with the receiving groove, the housing portion is formed with the first connecting hole and the second connecting hole extending into the receiving groove, at least part of the first connecting piece and the second connecting piece is arranged on the outer surface of the housing portion and covers the first connecting hole and the second connecting hole respectively.

[0014] According to some embodiments of the present application, the power distribution box assembly for the battery pack, the housing portion is provided with a first positioning portion and a second positioning portion, the first connecting piece is provided with a third positioning portion limiting cooperation with the first positioning portion, and the second connecting piece is provided with a fourth positioning portion limiting cooperation with the second positioning portion.

[0015] The battery pack according to the embodiments of the present application is briefly described below.

[0016] The battery pack according to the embodiments of the present application includes the power distribution box assembly of any of the above embodiments. Since the battery pack according to the embodiments is provided with the power distribution box assembly of any of the above embodiments, the processing difficulty of the power distribution box assembly is reduced, the installation matching degree is improved, the overall assembly efficiency of the battery pack is significantly improved, the problems such as prolonged assembly time and complex process caused by high installation precision requirement of the power distribution box assembly are alleviated, the production cycle of the battery pack is shortened, the production capacity is improved, the production cost is reduced, the accurately installed power distribution box assembly can ensure the reliability of the internal circuit connection, the stable conduction or disconnection control between the relay and the connecting piece is guaranteed, the circuit failure risk caused by poor connection such as virtual connection, open circuit or short circuit is reduced, which helps to maintain the voltage and current output stability of the battery pack during the charging and discharging process, improves the overall performance of the battery pack, provides more stable and continuous power support for the equipment powered by the battery pack, reduces the damage to the equipment caused by power fluctuation, and prolongs the service life of the equipment

[0017] The vehicle according to the embodiments of the present application is briefly described below.

[0018] The vehicle according to the embodiment of the present application comprises the battery pack of any of the above embodiments. Since the vehicle according to the embodiment is provided with the battery pack of any of the above embodiments, the vehicle according to the present application has a stable power supply battery pack. In the scene of vehicle acceleration, climbing, and other situations requiring large power output, stable current supply can ensure that the motor can efficiently convert electrical energy into mechanical energy, avoid the situation of power interruption or power shortage caused by unstable power supply, make the power output of the vehicle more linear and smooth, improve the driving experience, reduce the risk of circuit failure caused by the connection problem of the battery pack distribution box assembly, and thus reduce the possibility of failure of the vehicle power system, help to improve the overall reliability of the vehicle power system, reduce the situation of vehicle stranded due to power system failure during driving, and enhance the driving safety of the vehicle.

[0019] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0021] Fig. 1 is a structural schematic view of a distribution box assembly for a battery pack according to an embodiment of the present application;

[0022] Fig. 2 is a structural schematic view of a limiting piece in a distribution box assembly for a battery pack according to an embodiment of the present application.

[0023] REFERENCE SIGNS:

[0024] 100, distribution box assembly;

[0025] 1, base; 11, receiving groove; 12, housing portion; 121, first positioning portion; 122, second positioning portion; 123, first connecting hole; 124, second connecting hole;

[0026] 2, first connecting piece; 21, third positioning portion;

[0027] 3, second connecting piece; 31, fourth positioning portion;

[0028] 4, relay;

[0029] 5, limiting piece; 51, mounting portion; 52, first leg portion; 53, second leg portion; 54, stop plate; 541, first stop block; 5411, pressing rib; 5412, through hole; 542, second stop block; 543, separation rib. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as limiting the present application.

[0031] Reference is made below to Figs. 1-2 A power distribution box assembly 100 for a battery pack according to embodiments of the present application is described.

[0032] The power distribution box assembly 100 for a battery pack according to embodiments of the present application comprises a base 1, a first connecting member 2, a second connecting member 3, a relay 4 and a limiting member 5, the first connecting member 2 is arranged on the base 1 and is adapted to be electrically connected with a battery module in the battery pack, the second connecting member 3 is arranged on the base 1 and is adapted to be connected with an external electrical component as an output terminal of the battery pack, the relay 4 is arranged on the base 1, the relay 4 is provided with a first contact terminal and a second contact terminal respectively connected with the first connecting member 2 and the second connecting member 3, the relay 4 is used to control the conduction or disconnection of the first contact terminal and the second contact terminal, the limiting member 5 is matched with at least part of the outer wall of the relay 4 and is detachably connected with the base 1, the limiting member 5 is used to limit the relay 4 from being separated from the base 1.

[0033] At present, in the traditional installation process of the power distribution box, the relay, the connecting member and the like are first installed on the base. Since there are multiple sockets on each component, in order to realize the accurate connection between the relay and the connecting member, it is necessary to ensure that the installation precision of each component on the base is high. If there is a deviation in the installation position of the relay, the connecting member and the like on the base, the corresponding relationship between the deviated socket and other components will be misaligned, thereby causing the problem that the relay and the connecting member and the like cannot be connected with each other to frequently occur, increasing the production cost and the installation difficulty, and also easily leading to unstable product quality and high scrap rate due to installation errors.

[0034] The power distribution box assembly 100 for a battery pack according to embodiments of the present application first connects the base 1 with the first connecting member 2 and the second connecting member 3, ensures that the connection between the base 1 and the first connecting member 2 and the second connecting member 3 is reliable, and then connects the relay 4 with the first connecting member 2 and the second connecting member 3, thereby avoiding the situation that the relay 4, the first connecting member 2 and the second connecting member 3 cannot be matched due to installation errors after the relay 4 and the first connecting member 2 and the second connecting member 3 are respectively positioned with the base 1. Finally, the position of the relay 4 on the base 1 is adjusted and fixed by the limiting member 5 arranged on the base 1, the movement between the relay 4 and the base 1 is reduced, the connection strength between the base 1 and the relay 4 is improved, the connection between the base 1 and the relay 4 is firm, the assembly process is improved and the limiting member is added, the processing difficulty of the power distribution box assembly 100 is reduced, and the installation matching degree of the power distribution box assembly 100 is improved.

[0035] The limiting piece 5 adjusts and fixes the relay 4, the limiting piece 5 cooperates with at least part of the outer wall of the relay 4, and can be detachably connected with the base 1. When the relay 4 is basically installed in place with the first connecting piece 2 and the second connecting piece 3, the position of the limiting piece 5 on the base 1 or the cooperation degree of the limiting piece 5 and the relay 4 is adjusted to fix the relay 4 in a position that can ensure normal work, that is, to ensure that the first contact end and the second contact end of the relay 4 can correspond to the first connecting piece 2 and the second connecting piece 3 to realize stable conduction or disconnection control function, avoiding the one-time high-precision installation requirement of the first connecting piece 2, the second connecting piece 3 and the relay 4. The entire installation process is divided into multiple steps with fault tolerance, and the position of the relay 4 is adjusted by the limiting piece 5, which reduces the initial installation precision requirement of the relay 4, the first connecting piece 2 and the second connecting piece 3 on the base 1, and also reduces the installation difficulty caused by the difficulty in ensuring the installation precision, improves the installation efficiency of the power distribution box assembly 100 and improves the assembly process of the power distribution box assembly 100, so that the installation process of the power distribution box assembly 100 is more stable and reliable.

[0036] Meanwhile, the limiting piece 5 can also enhance the connection strength of the relay 4 and the base 1. During vehicle operation, vibration and bumping will occur. The limiting piece 5 avoids unstable connection of the relay 4 and the base 1, reduces the frequency of circuit failure caused by loosening and displacement of the relay 4, which affects the electrical connection stability between the relay 4, the first connecting piece 2 and the second connecting piece 3. The limiting piece 5 cooperates with the outer wall of the relay 4 and is connected with the base 1 to provide additional support and fixing force for the relay 4, which can disperse the stress caused by vibration, prevent the relay 4 from shaking or displacing on the base 1, ensure that the relay 4 is always in the correct working position, maintain good contact state of the relay 4, the first connecting piece 2 and the second connecting piece 3, ensure stable operation of the power distribution box assembly 100, continuously provide reliable power distribution and control function for the electrical system of the vehicle, ensure stable performance of the vehicle, reduce potential safety hazards caused by loose connection, prolong the service life of the battery pack and related electrical components, and reduce the maintenance cost and frequency of the vehicle.

[0037] Further, in the prior art, when the model of the relay 4 is replaced and the connection position of the relay 4 is changed, the traditional power distribution box assembly relies on fixed structure and positional relationship between components, and once the connection position of the relay 4 is changed, the connection position of other components matched with the relay 4 must also be adjusted to ensure the connection strength of the power distributor and the base 1, which means that the mold of the entire power distribution box assembly 100 needs to be redesigned and manufactured, involving the investment of human, material and time costs. However, in the power distribution box assembly 100 involved in the present embodiment, since the limiting piece 5 is adopted, when the model of the relay 4 is replaced and the connection position is changed, only the structure of the limiting piece 5 needs to be changed to effectively match the connection requirements of the new relay 4, avoiding the adjustment of the connection position of other matched components and the cost investment caused by re-opening the mold. The limiting piece 5 is flexible and adjustable because it is matched with at least part of the outer wall of the relay 4 and is detachably connected with the base 1, which simplifies the improvement work caused by the replacement of the relay 4 and significantly reduces the subsequent improvement cost, including mold cost, labor cost and time cost, which is conducive to quickly responding to demand in the product research and development and upgrading process, and timely adopting more advanced or more suitable relay 4 model to improve the performance and quality of the product.

[0038] It should be noted that the external electrical element refers to a power supply or power consumption element outside the battery pack, which can work through the power provided by the battery pack or provide power to the battery pack.

[0039] According to some embodiments of the present application, the power distribution box assembly 100 for the battery pack, the base 1 is formed with a receiving groove 11 for receiving the relay 4, and the relay 4 is received in the receiving groove 11; wherein the limiting piece 5 is formed with a mounting portion 51 connected with the base 1, and at least part of the limiting piece 5 is opposite to the relay 4 in the opening direction of the receiving groove 11.

[0040] The base 1 is formed with a receiving groove 11 for receiving the relay 4, which provides a relatively stable installation space for the relay 4. During assembly, the relay 4 is placed in the receiving groove 11, so that the initial position of the relay 4 on the base 1 is limited, and installation errors can be avoided. The mounting portion 51 on the limiting piece 5 is connected with the base 1, and at least part of the limiting piece 5 is opposite to the relay 4 in the opening direction of the receiving groove 11. During installation, due to the opposite relationship between the limiting piece 5 and the relay 4 in the opening direction of the receiving groove 11, the limiting piece 5 can limit the displacement of the relay 4 in the opening direction of the receiving groove 11. When the vehicle is jolted or vibrates during driving, the relay 4 may be subjected to a force and tend to separate from the base 1 or in the receiving groove 11. At this time, the limiting piece 5 can ensure that the relay 4 is always in a suitable working position, maintaining the connection stability between the relay 4 and the first and second connecting pieces 2 and 3.

[0041] Meanwhile, the cooperation between the accommodation groove 11 and the limiting piece 5 can also assist in positioning the relay 4 in the opening direction of the accommodation groove 11. Since the relay 4 is accommodated in the groove, the movement range of the relay 4 is naturally restricted by the side wall of the accommodation groove 11. In addition, the limiting piece 5 is in direct contact with the relay 4, which further limits the displacement of the relay 4 in the opening direction of the accommodation groove 11 due to external forces, helping to ensure that the first contact end and the second contact end of the relay 4 remain in good alignment with the corresponding first connecting piece 2 and second connecting piece 3, reducing the risk of circuit failure caused by poor contact, improving the electrical connection reliability of the power distribution box assembly 100 as a whole, thereby ensuring that the battery pack can stably provide power distribution and control functions for the electrical system of the vehicle, and improving the safety and stability of the vehicle operation.

[0042] According to some embodiments of the present application, the limiting piece 5 of the power distribution box assembly 100 for the battery pack includes a first leg portion 52, a second leg portion 53, and a stop plate 54. The first leg portion 52 and the second leg portion 53 are spaced apart and located on both sides of the relay 4 in the width direction. One end of the first leg portion 52 and one end of the second leg portion 53 are respectively formed with a mounting portion 51. The two ends of the stop plate 54 are respectively connected to the other end of the first leg portion 52 and the other end of the second leg portion 53. The stop plate 54 is in direct contact with the relay 4 in the opening direction of the accommodation groove 11.

[0043] The first leg portion 52 and the second leg portion 53 are spaced apart and located on both sides of the relay 4 in the width direction, so that the limiting piece 5 can clamp and position the relay 4 from both sides of the relay 4. During installation, when the relay 4 is placed in the accommodation groove 11 of the base 1, the first leg portion 52 and the second leg portion 53 can restrict the shaking or displacement of the relay 4 in the width direction. When the vehicle is turning, accelerating, or jolting, the relay 4 will tend to shift to the left and right sides due to the lateral force. The first leg portion 52 and the second leg portion 53 can fix the relay 4 in a predetermined position, ensuring the accuracy of the relative position of the relay 4 and the first connecting piece 2 and the second connecting piece 3 in the width direction, maintaining the stability of the electrical connection, and avoiding problems such as poor contact or disconnection caused by lateral displacement.

[0044] One end of the first leg portion 52 and one end of the second leg portion 53 are respectively formed with mounting portions 51, so that the limiting piece 5 can be connected with the base 1, ensuring the stability of the position of the limiting piece 5 itself, and also making the restraining action of the limiting piece 5 on the relay 4 more reliable and durable. The two ends of the stop plate 54 are respectively connected with the other end of the first leg portion 52 and the other end of the second leg portion 53, and the stop plate 54 is opposite to the relay 4 in the opening direction of the accommodation groove 11. The existence of the stop plate 54 is mainly to limit the movement of the relay 4 in the opening direction of the accommodation groove 11. When the vehicle is running, the relay 4 may be separated from the accommodation groove 11 due to vibration. The stop plate 54 can prevent the relay 4 from separating from the accommodation groove 11, ensure the position stability of the relay 4 in the opening direction of the accommodation groove 11, and further ensure that the connection between the relay 4 and the connecting piece is not affected, maintain the normal working state of the power distribution box assembly 100, ensure the stable output of the battery pack power distribution and control function, reduce the risk of circuit failure caused by vibration, and improve the reliability and safety of the battery pack and the entire vehicle electrical system.

[0045] According to some embodiments of the present application, the power distribution box assembly 100 for the battery pack, the stop plate 54 is formed with a first stop block 541 protruding towards the surface of the relay 4.

[0046] During the daily driving of the vehicle, different degrees of vibration will occur, and the power distribution box assembly 100 in the battery pack will also be affected. The relay 4 exists in the risk of producing a large displacement in the opening direction of the accommodation groove 11. The stop plate 54 itself can play a certain blocking role in the vertical direction of the relay 4, and the first stop block 541 protruding thereon further enhances this limiting function. When the relay 4 has a tendency to come out due to vibration, the first stop block 541 will first contact the surface of the relay 4. Compared with the simple plane contact of the stop plate 54, it can more accurately limit the upward displacement amplitude of the relay 4. Because the protruding part of the first stop block 541 reduces the allowable activity space between the relay 4, the activity range of the relay 4 in the vertical direction is further compressed, thereby more effectively preventing the relay 4 from being separated from the normal working position due to excessive upward displacement, and ensuring that the electrical connection between the relay 4 and the first connecting piece 2 and the second connecting piece 3 is always in a stable and reliable state.

[0047] In some embodiments of the present application, a plurality of through holes 5412 are formed in the thickness direction of the limiting piece 5 on the stop plate 54, the plurality of through holes 5412 are arranged at intervals in the length direction of the limiting piece 5, a plurality of ribs 5411 are formed on the hole wall of the through hole 5412, the projection of the rib 5411 in the thickness direction of the limiting piece 5 at least partially overlaps the through hole 5412, wherein the rib 5411 is in abutment or connection with the side of the first stop block 541 away from the relay 4, when the first stop block 541 is subjected to an external force, by arranging the rib 5411, when the first stop block 541 is subjected to the force transmitted by the displacement of the relay 4, due to the connection of the rib 5411 with the hole wall of the through hole 5412, and the through hole 5412 is arranged on the stop plate 54, the rib 5411 can disperse the force on the first stop block 541 to the entire stop plate 54, so that the force concentrated on the first stop block 541 is distributed to a larger area of the stop plate 54 through the conduction of the rib 5411, so that the entire stop plate 54 participates in the force together, greatly reducing the local force intensity of the first stop block 541, and also making the force distribution more uniform, avoiding the damage or deformation of the first stop block 541 under the action of the force transmitted by the displacement of the relay 4, thereby improving the force intensity of the first stop block 541, and the arrangement of the through hole 5412 can help the relay 4 to dissipate heat.

[0048] According to the power distribution box assembly 100 for a battery pack of some embodiments of the present application, at least one of the first leg portion 52 and the second leg portion 53 is formed with a protruding second stop block 542, and the second stop block 542 abuts the relay 4 in the width direction.

[0049] When at least one of the first leg portion 52 and the second leg portion 53 is formed with a protruding second stop block 542, and the second stop block 542 abuts the relay 4 in the width direction, the position of the relay 4 in the width direction is further limited, compared with relying on the side wall of the leg portion to limit, the second stop block 542 can achieve more accurate positioning effect with smaller contact area, when the vehicle frequently turns, the centrifugal force will cause the relay 4 to deviate to one side, the second stop block 542 directly abuts against the relay 4, controls the allowable movement range of the relay 4 in the width direction, ensures that the relay 4 is in the accurate position required by the design, and ensures that the electrical connection between the relay 4 and the connecting piece will not be poor or disconnected due to displacement in the width direction, thereby maintaining the stable performance of the power distribution box assembly 100 in distributing and controlling the electrical energy of the battery pack.

[0050] According to the power distribution box assembly 100 for a battery pack of some embodiments of the present application, the relays 4 are arranged at intervals in the accommodation groove 11, and the side of the stop plate 54 facing the accommodation groove 11 is formed with a partition rib 543 located between the adjacent two relays 4.

[0051] In the battery pack distribution box assembly 100, there are multiple relays 4 arranged in the receiving groove 11, when the vehicle is in operation, it will continue to be affected by vibration, jolt and various external forces, the partition rib 543 formed on the stop plate 54 is located between the adjacent two relays 4, which plays a role of physical isolation, and separates each relay 4, so that each relay 4 can maintain stability in the independent space, avoiding the additional shaking, displacement or collision between multiple relays 4 due to mutual interference, ensuring the stability of the electrical connection of each relay 4 and the normal performance of the current on-off control function, thereby ensuring the accuracy and reliability of the power distribution and control of the entire distribution box assembly 100 and even the battery pack.

[0052] According to the distribution box assembly 100 for the battery pack of some embodiments of the present application, the base 1 is provided with a housing portion 12, the housing portion 12 is formed with a receiving groove 11, the housing portion 12 is formed with a first connecting hole 123 and a second connecting hole 124 extending into the receiving groove 11, and at least part of the first connecting piece 2 and the second connecting piece 3 are arranged on the outer surface of the housing portion 12 and cover the first connecting hole 123 and the second connecting hole 124 respectively.

[0053] In the working environment of the battery pack, it is necessary to ensure that the connection between the first connecting piece 2, the second connecting piece 3 and the base 1 is stable and reliable, so as to ensure the continuous normal operation of the entire distribution box assembly 100, the base 1 is provided with a housing portion 12, the housing portion 12 is formed with a receiving groove 11 for arranging related components, and the first connecting hole 123 and the second connecting hole 124 extending into the receiving groove 11 of the housing portion 12 provide a connection channel for the connection of the first connecting piece 2, the second connecting piece 3 and the internal structure, at least part of the first connecting piece 2 and the second connecting piece 3 are arranged on the outer surface of the housing portion 12 and cover the first connecting hole 123 and the second connecting hole 124 respectively, so that the connecting piece and the connecting hole can form a matching relationship, the connecting piece covers the connecting hole, which plays a protective role for the connecting hole from the outside, avoiding the entry of dust, water vapor and other impurities from the outside into the receiving groove 11, preventing these impurities from causing erosion, short circuit and other adverse effects on the relays 4 and other precision components in the receiving groove 11, prolonging the service life of the internal components and ensuring the performance stability of the distribution box assembly 100; the covering type connection structure increases the contact area between the connecting piece and the housing portion 12, even if affected by vibration, jolt and other external forces during vehicle operation, the larger contact area can better disperse the external force, so that the connecting piece is not easy to loosen or separate from the connecting hole, ensuring the firmness of the connection between the first connecting piece 2, the second connecting piece 3 and the base 1, and further maintaining the stability of the circuit connection of the entire distribution box assembly 100, ensuring the stable power distribution and control of the battery pack.

[0054] According to the power distribution box assembly 100 for the battery pack according to some embodiments of the present application, the shell part 12 is provided with a first positioning part 121 and a second positioning part 122, the first connecting piece 2 is provided with a third positioning part 21 which is limited and matched with the first positioning part 121, and the second connecting piece 3 is provided with a fourth positioning part 31 which is limited and matched with the second positioning part 122.

[0055] The first positioning part 121 and the second positioning part 122 provided on the shell part 12 form a limited and matched relationship with the third positioning part 21 on the first connecting piece 2 and the fourth positioning part 31 on the second connecting piece 3, respectively, so that when the first connecting piece 2 is installed, the position of the first connecting piece 2 on the outer surface of the shell part 12 relative to the first connecting hole 123 can be determined through the mutual limitation of the third positioning part 21 and the first positioning part 121. Similarly, the position of the second connecting piece 3 on the outer surface of the shell part 12 relative to the second connecting hole 124 can be determined through the limited and matched relationship between the fourth positioning part 31 and the second positioning part 122. Workers can accurately place the first connecting piece 2 and the second connecting piece 3 in the correct place according to the positioning structure, avoiding the position deviation of the connecting piece caused by manual judgment errors or random installation, so that the connecting piece and the connecting hole can be aligned, thereby ensuring smooth and reliable electrical connection, reducing problems such as poor contact and circuit failure caused by inaccurate connection position, and improving the assembly quality of the entire power distribution box assembly 100.

[0056] The battery pack according to the embodiments of the present application is briefly described below.

[0057] The battery pack according to the embodiments of the present application includes the power distribution box assembly 100 of any of the above embodiments. Since the battery pack according to the present embodiment is provided with the power distribution box assembly 100 of any of the above embodiments, the processing difficulty of the power distribution box assembly 100 is reduced, and the installation matching degree is improved, so that the overall assembly efficiency of the battery pack is significantly improved. The problems such as prolonged assembly time and complex process caused by high installation precision requirement of the power distribution box assembly 100 are alleviated, the production cycle of the battery pack can be shortened, and the production capacity can be improved, thereby reducing the production cost. The accurately installed power distribution box assembly 100 can ensure the reliability of the internal circuit connection of the power distribution box assembly 100. The stable on-off control between the relay 4 and the connecting piece is guaranteed, and the risk of circuit failure such as virtual connection, open circuit or short circuit caused by poor connection is reduced. This helps to maintain the stability of voltage and current output of the battery pack during charging and discharging, improves the overall performance of the battery pack, provides more stable and continuous power support for the equipment powered by the power distribution box assembly 100, reduces the damage to the equipment caused by power fluctuation, and prolongs the service life of the equipment

[0058] The vehicle according to the embodiments of the present application is briefly described below.

[0059] The vehicle according to the embodiment of the present application comprises the battery pack of any one of the above embodiments. Since the vehicle according to the embodiment is provided with the battery pack of any one of the above embodiments, the vehicle according to the present application has a stable power supply battery pack. In the scene of vehicle acceleration, climbing and other situations requiring large power output, stable current supply can ensure that the motor can efficiently convert electrical energy into mechanical energy, avoid the situation of power interruption or power shortage caused by unstable power supply, make the power output of the vehicle more linear and smooth, improve the driving experience, reduce the risk of circuit failure caused by the connection problem of the battery pack distribution box assembly 100, and reduce the possibility of failure of the vehicle power system, which helps to improve the overall reliability of the vehicle power system, reduces the situation of vehicle stranded due to power system failure during driving, and enhances the driving safety of the vehicle.

[0060] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0061] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0062] In the description of the present application, "a plurality of" means two or more.

[0063] In the description of the present application, "above", "over" and "on" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0064] In the description of the present application, "above", "over" and "on" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0065] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. It is emphasized that each of these terms refers to a specific feature, structure, material or characteristic described in connection with a particular embodiment or example. The descriptive terms are not necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0066] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. A distribution box assembly for a battery pack, the distribution box assembly comprising: The utility model relates to a battery pack relay limiting device, including: Base (1); First connecting piece (2), first connecting piece (2) is arranged in base (1) and is suitable for being electrically connected with battery module in battery pack, Second connecting piece (3), second connecting piece (3) is arranged in the base (1) body and is suitable for being connected as the output end of battery pack with external electrical component, Relay (4), relay (4) is arranged in base (1), relay (4) is provided with first contact end and second contact end of first connecting piece (2) and second connecting piece (3) respectively, and relay (4) is used for controlling the conduction or disconnection of first contact end and second contact end, Limiting piece (5), limiting piece (5) cooperates with at least part outer wall of relay (4) and is detachably connected with base (1), and limiting piece (5) is used for limiting relay (4) to separate from base (1).

2. The distribution box assembly for a battery pack of claim 1, wherein, Form the accommodating groove (11) for accommodating relay (4) on base (1), and relay (4) is accommodated in accommodating groove (11);Wherein Form the mounting portion (51) connected with base (1) on limiting piece (5), and at least part of limiting piece (5) is directly opposite relay (4) in the opening direction of accommodating groove (11).

3. The distribution box assembly for a battery pack of claim 2, wherein, Limiting piece (5) includes: First supporting leg portion (52) and second supporting leg portion (53), first supporting leg portion (52) and second supporting leg portion (53) are arranged at intervals and are located on both sides in the width direction of relay (4), and one end of first supporting leg portion (52) and one end of second supporting leg portion (53) form mounting portion (51) respectively; Stop plate (54), both ends of stop plate (54) are connected with the other end of first supporting leg portion (52) and the other end of second supporting leg portion (53) respectively, and stop plate (54) is directly opposite relay (4) in the opening direction of accommodating groove (11).

4. The distribution box assembly for a battery pack of claim 3, wherein, First stop block (541) is formed on stop plate (54) and protrudes towards the surface of relay (4).

5. The distribution box assembly for a battery pack of claim 3, wherein, Second stop block (542) is formed on at least one of first supporting leg portion (52) and second supporting leg portion (53) and protrudes, and second stop block (542) is stopped in the width direction with relay (4).

6. The distribution box assembly for a battery pack of claim 3, wherein, Relay (4) is configured as multiple arranged at intervals in accommodating groove (11), and the partition rib (543) between adjacent two relays (4) is formed on one side of stop plate (54) towards accommodating groove (11).

7. The distribution box assembly for a battery pack of claim 2, wherein, Base (1) is provided with housing portion (12), the accommodating groove (11) is formed in housing portion (12), first connecting hole (123) and second connecting hole (124) are formed on housing portion (12) and extend into accommodating groove (11), and at least part of first connecting piece (2) and second connecting piece (3) is arranged on the outer surface of housing portion (12) and covers first connecting hole (123) and second connecting hole (124) respectively.

8. The distribution box assembly for a battery pack of claim 7, wherein, The shell part (12) is provided with a first positioning part (121) and a second positioning part (122), the first connecting piece (2) is provided with a third positioning part (21) in limiting cooperation with the first positioning part (121), and the second connecting piece (3) is provided with a fourth positioning part (31) in limiting cooperation with the second positioning part (122).

9. A battery pack, characterized by, The power distribution box assembly (100) according to any one of claims 1-8.

10. A vehicle characterized by comprising: The battery pack according to claim 9.

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