High-voltage box module for battery pack

Abstract

The utility model relates to the technical field of battery packs, in particular to a high-voltage box module for a battery pack, which comprises a box body and a box cover which can be mutually buckled to form a mounting cavity, and the box body comprises a rectangular bottom plate, a left side edge and a right side edge which are symmetrically arranged on the bottom plate, and a front side edge and a rear side edge which are symmetrically arranged on the bottom plate; the bottom plate is provided with a functional component mounting position for fixedly connecting a functional component, the left side edge and the right side edge are provided with internal connection copper bar grooves, and the internal connection copper bar grooves and the box cover form an internal connection copper bar through groove; one side, corresponding to the front side edge, of the box cover is provided with an external copper bar groove, and the external copper bar groove and the front side edge form an external copper bar through groove; a sliding groove is formed in the box body, and clamping feet are arranged on the sliding groove. A sliding piece is arranged on the box cover, and a clamping groove capable of clamping the clamping foot is formed in the sliding piece. The high-voltage box module not only has a simple structure and can realize ordered packaging of the functional parts, but also can improve the connection firmness among the functional parts, and can effectively improve the assembly efficiency of the functional parts of the high-voltage box.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack technical field especially relates to a high pressure box module for battery pack. BACKGROUND

[0002] At present, new energy vehicles are widely concerned by the society due to their excellent environmental performance, and the requirements for new energy vehicles are also increasing. As a kind of new energy vehicle, electric vehicles are also developing towards high safety, high energy ratio and lightweight. The main factor determining the driving range of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different vehicle models to meet the driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple cell modules, that is, multiple cell modules are stacked in the same box, and then the cell modules are connected. The core cell module generally configures a corresponding number of cells according to the size of the required output voltage, and then connects all the cells for voltage output. The voltage output of the battery module needs to be connected with the high voltage box. Among them, the high voltage box of the battery pack plays a crucial role in new energy vehicles, and its main functions are as follows:

[0004] 1. Electric energy input and output: The high voltage distribution box receives high voltage direct current from the battery pack and distributes electric energy to various high voltage electrical equipment such as electric motors, air conditioning compressors, etc. according to the control instructions of the vehicle. At the same time, when needed, it can also collect and return the electric energy generated by the equipment to the battery pack, realizing the recycling and distribution of electric energy.

[0005] 2. Control and protection of electric energy: The high voltage distribution box controls and protects electric energy through integrated multiple high voltage relays and fuses, etc. For example, when detecting abnormal circuit (such as overload, short circuit, etc.), it will cut off the current in time to prevent the fault from expanding and protect the circuit and electrical equipment from being damaged.

[0006] 3. Real-time monitoring: The high voltage distribution box has current and voltage collection function, which can monitor the high voltage connection state and insulation state in real time to ensure the safety of the vehicle during driving. Once it detects overcurrent, overvoltage, overtemperature and other abnormal conditions, it will cut off the high voltage quickly to prevent the vehicle and passengers from being damaged.

[0007] 4. Overcurrent, overvoltage and overtemperature protection: The high voltage distribution box is built-in overcurrent, overvoltage and overtemperature protection function, which can cut off the high voltage in time when abnormal situation occurs to prevent the fault from expanding and protect the safety of the vehicle and passengers.

[0008] 5、CAN communication function: The high-voltage distribution box also has CAN communication function, which can exchange real-time data with other systems of the vehicle, realizing intelligent management. This enables the vehicle to more accurately control the use and distribution of electric energy, improve energy utilization efficiency, and improve the overall performance and safety of the vehicle.

[0009] 6、Fault processing record: The high-voltage distribution box can record and store fault information, providing important basis for fault diagnosis and maintenance of the vehicle. This helps maintenance personnel quickly locate the problem, improves maintenance efficiency, and reduces maintenance cost.

[0010] In summary, the battery pack high-voltage box plays a role in electric energy management, high-voltage safety management, intelligent management and other functions in new energy vehicles. Its performance and safety are directly related to the overall performance of the vehicle and the safety of passengers.

[0011] The main functional components of the battery pack high-voltage box include resistors, relays, fuses, and Hall sensors. The traditional high-voltage box includes a box body, and then the above-mentioned functional components are pre-connected by cables and then placed directly in the box body, and then a cover is buckled. Since each functional component is not fixed separately, it is easy to cause displacement of each functional component during long-term jolting or vibration use of the vehicle, and even cause loosening of the connection; in addition, the disordered arrangement of functional components will also cause mutual interference of current, voltage and signal lights during work, and further cause electrical connection failure.

[0012] Therefore, there is an urgent need for a new technical solution to solve the above technical problems. Practical new type content

[0013] The purpose of the present application is to overcome the problems of the prior art, and to provide a high-voltage box module for a battery pack, which solves the technical problems of the high-voltage box in the prior art, i.e. without separate fixing of each functional component, which easily causes displacement of each functional component during long-term jolting or vibration use of the vehicle, and even causes loosening of the connection; in addition, the disordered arrangement of functional components will also cause mutual interference of current, voltage and signal lights during work, and further cause electrical connection failure.

[0014] The above-mentioned purpose is achieved by the following technical solutions:

[0015] A high-voltage box module for a battery pack includes a box body and a box cover capable of being mutually buckled to form an installation cavity, the box body including a rectangular bottom plate, left and right side edges symmetrically arranged at the short sides of the bottom plate, and front and back side edges symmetrically arranged at the long sides of the bottom plate; the bottom plate is provided with a functional component mounting position for fixing a functional component, and the left and right side edges are provided with inner copper bar groove recesses to form inner copper bar through grooves with the box cover; the box cover is provided with an outer copper bar groove recess at a side corresponding to the front side edge to form an outer copper bar through groove with the front side edge; the box body is provided with a plurality of sliding grooves, and the sliding grooves are provided with clamping feet; the box cover is provided with a plurality of sliding pieces, and the sliding pieces are provided with clamping grooves capable of clamping the clamping feet.

[0016] Further, the left and right side edges are each provided with a bolt connection portion.

[0017] Further, the top of the left and right side edges is provided with a box body threaded hole, the box cover is provided with a box cover pressing block corresponding in position to the box body threaded hole, and the box cover pressing block is provided with a box cover threaded hole corresponding to the box body threaded hole.

[0018] Further, the box cover is provided with an inner through groove baffle corresponding in position to the inner copper bar through groove.

[0019] Further, the top of the box cover is provided with an outer through groove baffle corresponding to the outer copper bar through groove.

[0020] Further, the surface of the bottom plate is provided with a pre-charge resistance mounting position and a relay mounting position; the functional components include a pre-charge resistance, a relay, a Hall sensor, and a fuse; the pre-charge resistance can be mounted on the pre-charge resistance mounting position, and the relay can be mounted on the relay mounting position.

[0021] Further, the inner wall of the right side edge is provided with a Hall sensor mounting position, and the Hall sensor mounting position is provided with the Hall sensor.

[0022] Further, the relay mounting position includes a first main circuit relay mounting position, a second main circuit relay mounting position, a pre-charge relay mounting position, and a third main circuit relay mounting position arranged in sequence; the relay includes a first main circuit relay capable of being mounted on the first main circuit relay mounting position, a second main circuit relay capable of being mounted on the second main circuit relay mounting position, a pre-charge relay capable of being mounted on the pre-charge relay mounting position, and a third main circuit relay capable of being mounted on the third main circuit relay mounting position.

[0023] Further, an inner wall of the rear side is provided with an accessory fuse mounting position adjacent to a position of the third main circuit relay mounting position, and the fuse comprises an accessory fuse mounted on the accessory fuse mounting position.

[0024] Further, a surface of the bottom plate is provided with a main circuit fuse mounting position adjacent to a position of the pre-charge resistor mounting position, and the fuse further comprises a main circuit fuse mounted on the main circuit fuse mounting position.

[0025] The high-voltage box module for the battery pack has the box body with the functional component mounting positions, can realize orderly and independent installation of the functional components, can realize electrical connection of the functional components and the battery cell module in the battery pack through the inner copper bar through groove, can realize connection of the functional components and the functional plug-in connectors on the battery pack box body through the outer copper bar through groove, has simple structure, can realize orderly packaging of the functional components, can improve connection firmness between the functional components, and can effectively improve assembly efficiency of the functional components of the high-voltage box. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a first perspective view of the high-voltage box module for the battery pack according to the utility model;

[0027] Figure 2 FIG. 2 is a second perspective view of the high-voltage box module for the battery pack according to the utility model;

[0028] Figure 3 FIG. 3 is an exploded view of the high-voltage box module for the battery pack according to the utility model;

[0029] Figure 4 FIG. 4 is a top view of the box body in the high-voltage box module for the battery pack according to the utility model.

[0030] FIG. 1 is a first perspective view of the high-voltage box module for the battery pack according to the utility model;

[0031] 1-box body, 101-mounting cavity, 102-bottom plate, 103-left side, 104-right side, 105-front side, 106-rear side, 107-inner copper bar groove, 108-inner copper bar through groove, 109-outer copper bar through groove, 110-sliding groove, 111-clamping leg, 112-box body threaded hole, 113-bolt connection part, 114-bolt through hole;

[0032] 2-box cover, 201-sliding piece, 202-clamping groove, 203-outer copper bar groove, 204-box cover pressing block, 205-box cover threaded hole, 206-inner through groove baffle, 207-outer through groove baffle;

[0033] 3-Functional component, 301-Pre-charge resistor, 302-Main circuit fuse, 303-Accessory fuse, 304-First main circuit relay, 305-Second main circuit relay, 306-Third main circuit relay, 307-Pre-charge relay, 308-Hall sensor;

[0034] 4-Functional component mounting position, 401-Pre-charge resistor mounting position, 402-Main circuit fuse mounting position, 403-Accessory fuse mounting position, 404-First main circuit relay mounting position, 405-Second main circuit relay mounting position, 406-Third main circuit relay mounting position, 407-Pre-charge relay mounting position, 408-Hall sensor mounting position. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] like Figures 1-4 As shown, this solution provides a high-voltage box module for a battery pack, including a box body 1 and a box cover 2 that can be interlocked to form an installation cavity 101. The box body 1 includes a rectangular base plate 102, a left side 103 and a right side 104 symmetrically arranged on the short side of the base plate 102, and a front side 105 and a rear side 106 symmetrically arranged on the long side of the base plate 102.

[0037] The base plate 102 is provided with a functional component mounting position 4 for the functional component 3 to be fixedly connected. The left side 103 and the right side 104 are provided with an inner copper busbar groove 107, which forms an inner copper busbar through groove 108 with the box cover 2, so that the internal functional component 3 can be electrically connected to the battery cell module through the inner copper busbar.

[0038] The cover 2 has an external copper busbar groove 203 on one side corresponding to the front side 105, forming an external copper busbar through groove 109 with the front side 105, so that the internal functional components 3 can be electrically connected to the functional plug-in through the external copper busbar.

[0039] The box body 1 is provided with a plurality of sliding grooves 110, and a locking foot 111 is provided on the sliding grooves 110; the box cover 2 is provided with a plurality of sliding pieces 201, and a locking groove 202 is provided on the sliding piece 201 to lock the locking foot 111.

[0040] The embodiment realizes the orderly and independent installation of the functional components by providing the box body with the functional component mounting position 4, and facilitates the electrical connection of the functional components 3 with the battery cell module in the battery pack by the inner copper bar through slot 108, and facilitates the connection of the functional components 3 with the functional plug-in components on the battery pack box body by the outer copper bar through slot 109.

[0041] The functional plug-in component in the embodiment is embedded on the box body of the battery pack and used for external plug-in.

[0042] As shown in Figures 1-3 As the connection mode of the box body and the battery pack box body, the bolt connection part 113 is arranged on the left side edge 103 and the right side edge 104, and the bolt is used to connect the box body 1 and the box body of the battery pack through the bolt connection part 113.

[0043] The bolt connection part 113 is provided with a bolt through hole 114.

[0044] As shown in Figure 2 and Figure 3 As the connection mode of the box body 1 and the box cover 2, the top of the left side edge 103 and the right side edge 104 is provided with a box body threaded hole 112, the box cover 2 is provided with a box cover pressing block 204 corresponding to the position of the box body threaded hole 112, and the box cover threaded hole 205 corresponding to the box body threaded hole 112 is arranged on the box cover pressing block 204.

[0045] The box cover pressing block 204 has two, which can be respectively pressed on the top of the left side edge 103 and the right side edge 104, and the box cover 2 is connected with the box body 1 by screwing through the box cover threaded hole 205 and the box body threaded hole 112.

[0046] As an optimization of the scheme, the box cover 2 is provided with an inner through slot baffle 206 corresponding to the position of the inner copper bar through slot 108, which is used to shield and protect the copper bar connected at the inner copper bar through slot 108.

[0047] The top of the box cover 2 is provided with an outer through slot baffle 207 corresponding to the outer copper bar through slot 109, which is used to shield and protect the copper bar connected at the outer copper bar through slot 109.

[0048] As shown in Figure 4 The surface of the bottom plate 102 in the embodiment is provided with a pre-charging resistance mounting position 401 and a relay mounting position;

[0049] The functional components 3 include a pre-charging resistance 301, a relay, a Hall sensor 308 and a fuse;

[0050] The pre-charge resistor 301 is installed in the pre-charge resistor installation site 401, and the relay is installed in the relay installation site.

[0051] The inner wall of the right side 104 is provided with a Hall sensor installation site 408, and the Hall sensor 308 is installed in the Hall sensor installation site 408.

[0052] The relay installation site includes a first main circuit relay installation site 404, a second main circuit relay installation site 405, a pre-charge relay installation site 407, and a third main circuit relay installation site 406 arranged in sequence; the relay includes a first main circuit relay 304 installed in the first main circuit relay installation site 404, a second main circuit relay 305 installed in the second main circuit relay installation site 405, a pre-charge relay 307 installed in the pre-charge relay installation site 407, and a third main circuit relay 306 installed in the third main circuit relay installation site 406.

[0053] In addition, the inner wall of the rear side 106 is provided with an accessory fuse installation site 403 adjacent to the third main circuit relay installation site 406, and the fuse includes an accessory fuse 303 installed in the accessory fuse installation site 403.

[0054] The surface of the bottom plate 102 is provided with a main circuit fuse installation site 402 adjacent to the pre-charge resistor installation site 401, and the fuse further includes a main circuit fuse 302 installed in the main circuit fuse installation site 402.

[0055] In the embodiment, the pre-charge resistor 301, the main circuit fuse 302, the first main circuit relay 304, the second main circuit relay 305, the third main circuit relay 306, the pre-charge relay 307, the accessory fuse 303, and the Hall sensor 308 are electrically connected to each other, and the connection mode is common knowledge in the art, so it will not be described in detail.

[0056] The above-mentioned functional components are orderly and independently installed through the pre-charge resistor installation site 401, the main circuit fuse installation site 402, the first main circuit relay installation site 404, the second main circuit relay installation site 405, the third main circuit relay installation site 406, the pre-charge relay installation site 407, the accessory fuse installation site 403 provided on the surface of the bottom plate 102, and the Hall sensor installation site 408 provided on the inner wall of the right side 104, which can ensure stable connection between the functional components.

[0057] The above merely illustrates the implementation modes of the present application and is not used to limit the present application, and for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-voltage box module for a battery pack, comprising a box body (1) and a box cover (2) capable of being mutually buckled to form a mounting cavity (101), characterized in that, The box body (1) comprises a rectangular bottom plate (102), a left side (103) and a right side (104) symmetrically arranged at the short sides of the bottom plate (102), and a front side (105) and a back side (106) symmetrically arranged at the long sides of the bottom plate (102); The bottom plate (102) is provided with a functional component mounting position (4) for fixing a functional component (3), and the left side (103) and the right side (104) are provided with inner copper bar recesses (107) which form inner copper bar through grooves (108) with the box cover (2); The box cover (2) is provided with an outer copper bar recess (203) on one side corresponding to the front side (105), which forms an outer copper bar through groove (109) with the front side (105); The box body (1) is provided with a plurality of sliding grooves (110), and the sliding grooves (110) are provided with clamping feet (111); the box cover (2) is provided with a plurality of sliding pieces (201), and the sliding pieces (201) are provided with clamping grooves (202) capable of clamping the clamping feet (111).

2. The high-voltage pod module for a battery pack of claim 1, wherein, The left side (103) and the right side (104) are provided with bolt connection parts (113).

3. The high-voltage box module for a battery pack according to claim 1, characterized by, The top of the left side (103) and the right side (104) is provided with a box body threaded hole (112), and the box cover (2) is provided with a box cover pressing block (204) corresponding to the position of the box body threaded hole (112), and the box cover pressing block (204) is provided with a box cover threaded hole (205) corresponding to the box body threaded hole (112).

4. The high-voltage pod module for a battery pack of claim 1, wherein, The box cover (2) is provided with an inner through groove baffle (206) corresponding to the position of the inner copper bar through groove (108).

5. The high-voltage pod module for a battery pack of claim 1, wherein, The top of the box cover (2) is provided with an outer through groove baffle (207) corresponding to the outer copper bar through groove (109).

6. The high-voltage pod module for a battery pack of claim 5, wherein, The surface of the bottom plate (102) is provided with a pre-charge resistance mounting position (401) and a relay mounting position; The functional component (3) comprises a pre-charge resistance (301), a relay, a Hall sensor (308) and a fuse; The pre-charge resistance (301) can be installed in the pre-charge resistance mounting position (401), and the relay can be installed in the relay mounting position.

7. The high-voltage pod module for a battery pack of claim 6, wherein, The inner wall of the right side (104) is provided with a Hall sensor mounting position (408), and the Hall sensor (308) is installed on the Hall sensor mounting position (408).

8. The high-voltage pod module for a battery pack of claim 6, wherein, The relay mounting position comprises a first main circuit relay mounting position (404), a second main circuit relay mounting position (405), a pre-charge relay mounting position (407) and a third main circuit relay mounting position (406) arranged in sequence; The relay comprises a first main circuit relay (304) capable of being installed in the first main circuit relay installation position (404), a second main circuit relay (305) capable of being installed in the second main circuit relay installation position (405), a pre-charging relay (307) capable of being installed in the pre-charging relay installation position (407), and a third main circuit relay (306) capable of being installed in the third main circuit relay installation position (406).

9. The high-voltage pod module for a battery pack of claim 8, wherein, An inner wall of the rear side (106) is provided with an accessory fuse installation position (403) adjacent to the third main circuit relay installation position (406), and the fuse further comprises an accessory fuse (303) installed in the accessory fuse installation position (403).

10. The high-voltage pod module for a battery pack of claim 6, wherein, A surface of the bottom plate (102) is provided with a main circuit fuse installation position (402) adjacent to the pre-charging resistor installation position (401), and the fuse further comprises a main circuit fuse (302) installed in the main circuit fuse installation position (402).

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