Battery pack for battery replacement

Abstract

The utility model provides a battery replacement battery pack, which relates to the field of power batteries and comprises a main box body and a cover body, one end face of the main box body is provided with an opening, a baffle arranged outside the opening in a sleeving mode and a bolt hole formed between the main box body and the baffle in a surrounding mode. The cover body comprises a groove used for being connected to the baffle in a sealed and sleeved mode, a connecting flange is fixedly arranged outside the cover body in a sleeved mode, a flange hole of the connecting flange is in bolted connection with the bolt hole, an extrusion sealing structure is formed between the cover body and the baffle, and the bolt connecting portion of the cover body and the main box body is located between the main box body and the baffle. When the cover body and the main box body are fixedly and hermetically connected, the flatness of the end face of the main box body is ensured, the surface of the main box body is free of any protruding structure, the size of the battery pack is effectively reduced, and the battery pack occupies a small area of a vehicle body structure.

Description

Technical Field

[0001] The utility model relates to the field of power batteries, and in particular to a battery replacement pack. Background Art

[0002] As the power source of electric vehicles, automotive power battery packs are important core components of electric vehicles. As the power source of electric vehicles, the performance of power batteries determines the endurance of electric vehicles and is usually the power of electric vehicles.

[0003] The existing battery pack installation methods of electric vehicles are generally divided into fixed installation and replaceable installation. The fixed installation battery pack is generally fixed on the car; while the replaceable installation battery pack generally adopts a movable installation method. The battery pack can be removed at any time for replacement or charging, and then installed on the vehicle body after replacement or charging.

[0004] Fixed-mounted batteries are not removable, and the batteries are charged using the traditional constant voltage and constant current charging method, which takes a long time to charge. Although the fast charging method can shorten the replenishment time, the excessive current and voltage in a short period of time will reduce the restoration ability of the power battery, reduce the number of battery charge and discharge cycles, accelerate the attenuation of battery capacity, and thus shorten the service life of the power battery. Although electric vehicles with battery swapping modes can theoretically solve the problem of endurance energy of pure electric vehicles, in the prior art, the connection and fixing part between the battery pack cover and the box body often protrudes from the main body of the box body, and its own volume is relatively large. In order to avoid interference between the battery pack and other components of the vehicle body when moving, a large space needs to be reserved on the vehicle body. In the prior art, the detachable battery pack occupies a large area of ​​the vehicle body structure. Utility Model Content

[0005] The purpose of the utility model is to provide a battery pack for battery replacement to solve the problems existing in the above-mentioned prior art. The bolted connection part between the cover body and the main box body is located between the main box body and the baffle, and an extrusion sealing structure is formed between the cover body and the baffle. While realizing the fixed sealing connection between the cover body and the main box body, the flatness of the end face of the main box body is also ensured. There is no protruding structure on the surface of the main box body, which effectively reduces the volume of the battery pack and the battery pack has less encroachment on the vehicle body structure.

[0006] To achieve the above-mentioned purpose, the present utility model provides the following solutions: a battery pack for battery replacement is provided, comprising a main box body and a cover body;

[0007] An opening, a baffle plate sleeved outside the opening, and bolt holes surrounding the main box body and the baffle plate are arranged on one end surface of the main box body;

[0008] The cover body comprises a groove for sealingly sleeved on the baffle, a connecting flange is disposed and fixed on the cover body, and a flange hole of the connecting flange is bolted to the bolt hole.

[0009] Preferably, a mounting flange is fixedly provided on the top of the main box body, the bolt holes are located in the mounting flange, and the baffle is fixed to the mounting flange.

[0010] Preferably, the mounting flange is perpendicular to the side wall of the main box body, and the baffle is perpendicular to the mounting flange.

[0011] Preferably, the cover body includes a lower edge for sleeve-engaging with the outer side of the main box body, and the lower edge is arranged around the outer end of the connecting flange.

[0012] Preferably, reinforcing ribs and a moving device for assisting the main box in moving are fixedly provided on the bottom surface of the main box.

[0013] Preferably, the reinforcing ribs include transverse reinforcing ribs and longitudinal reinforcing ribs that are perpendicular to each other.

[0014] Preferably, the moving device includes a universal ball or a roller.

[0015] Preferably, a combined socket is provided on the side end surface of the main box body, and the combined socket includes a socket shell, contacts, buckles, a mounting flange and a sealing ring.

[0016] Preferably, both side end surfaces of the main box body are provided with handles for pulling and moving it.

[0017] Preferably, a waterproof breathable valve is provided on the side end surface of the main box.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] When the cover body is connected to the main box body, the groove in the cover body is directly mounted on the baffle, forming an extrusion sealing structure between the cover body and the baffle, and then the connecting flange and the bolt holes on the main box body are connected by bolts. The bolt connection part between the cover body and the main box body is located between the main box body and the baffle, and does not protrude from the box body. While achieving a fixed and sealed connection between the cover body and the main box body, the flatness of the end face of the main box body is also ensured. There is no protruding structure on the surface of the main box body, which effectively reduces the volume of the battery pack and the battery pack has less encroachment on the vehicle body structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the main box of the utility model;

[0023] Figure 3 It is a partial enlarged schematic diagram of the main box of the utility model;

[0024] Figure 4 This is a top view of the cover body of the utility model;

[0025] Figure 5 This is a bottom view of the cover body of the utility model;

[0026] Figure 6 This is a schematic diagram of the bottom surface of the main box of the utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the combined socket of the utility model.

[0028] Among them, 1. main box body; 2. cover body; 3. baffle; 4. bolt hole; 5. groove; 6. connecting flange; 7. bolt; 8. mounting flange; 9. lower edge; 10. transverse reinforcement rib; 11. longitudinal reinforcement rib; 12. moving device;

[0029] 13. Combined socket; 131. Socket housing; 132. First power contact; 133. Second power contact; 134. Signal contact; 135. Buckle; 136. Screw;

[0030] 14. Waterproof breathable valve; 15. Handle. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Please refer to Figures 1 to 7 As shown, in this embodiment, a battery pack for battery replacement is provided, including a main box body 1 and a cover body 2. The main box body 1 is preferably a rectangular parallelepiped structure. An opening is provided on one end face of the main box body 1. A baffle 3 is sleeved on the outside of the opening. The baffle 3 is preferably a rectangular baffle or an annular baffle. Bolt holes 4 are arranged around the outside of the baffle 3, and the bolt holes 4 are located on the inner side of the main box body 1. The bolt holes 4 do not protrude from the box body. Preferably, the bolt holes 4 are evenly distributed on the outer periphery of the baffle 3. A groove 5 is provided inside the cover body 2. The cover body 2 is sleeved on the baffle 3 through the groove 5. At this time, the cover body 2 can squeeze the baffle 3, so that an extrusion sealing structure is formed between the cover body 2 and the baffle 3. A connecting flange 6 is provided on the cover body 2. The connecting flange 6 is fixedly connected to the cover body 2. The flange holes of the connecting flange 6 and the bolt holes 4 are connected by bolts 7.

[0034] When the cover body 2 is connected to the main box body 1, the groove 5 in the cover body 2 is directly mounted on the baffle 3, and an extrusion sealing structure is formed between the cover body 2 and the baffle 3. The connecting flange 6 and the bolt hole 4 on the main box body 1 are then connected by bolts 7. The bolt 7 connecting part between the cover body 2 and the main box body 1 is located between the main box body 1 and the baffle 3 and does not protrude from the main box body 1. While achieving a fixed and sealed connection between the cover body 2 and the main box body 1, it also ensures that the end face of the main box body 1 is flat without any protruding structure, thereby effectively reducing the volume of the battery pack and the battery pack has less encroachment on the vehicle body structure.

[0035] In one embodiment, a mounting flange 8 is fixedly provided on the top of the main box body 1, and the mounting flange 8 is located between the main box body 1 and the baffle 3. The flange hole of the mounting flange 8 constitutes a bolt hole 4, that is, the bolt hole 4 is located in the mounting flange 8. The baffle 3 is fixedly connected to the mounting flange 8. Preferably, the baffle 3 is fixedly connected to the edge of the central opening of the mounting flange 8. When the cover body 2 is installed with the main box body 1, the end face of the connecting flange 6 on the cover body 2 can be completely fitted with the end face of the mounting flange 8. At this time, an effective seal can also be formed between the mounting flange 8 and the connecting flange 6, thereby increasing the sealing performance of the battery pack.

[0036] In this embodiment, the mounting flange 8 is perpendicular to the side wall of the main box 1, and the baffle 3 is perpendicular to the mounting flange 8. The baffle 3 is folded upward relative to the main box 1 and the mounting flange 8, and the bottom of the baffle 3 is fixedly connected to the mounting flange 8. The main body of the baffle 3 is located above the main box 1 and the mounting flange 8. At this time, the baffle 3 will not encroach on the structure inside the main box 1, ensuring that there is enough space in the main box 1 to place the battery module.

[0037] In one embodiment, the lower edge 9 surrounds the outer side of the connecting flange 6, and the lower edge 9 is fixedly connected to the connecting flange 6. The lower edge 9 can be directly mounted on the outer wall of the main box body 1, so that the connection between the cover body 2 and the main box body 1 is tighter, and the lower edge 9 and the outer wall of the main box body 1 can also be squeezed and sealed to increase the sealing effect of the battery pack.

[0038] In one embodiment, reinforcing ribs are fixedly arranged on the bottom surface of the main box 1 to increase the rigidity of the box, so that the box can stably withstand the gravity of the battery pack and the impact force during vehicle movement, effectively preventing the box from deforming, avoiding deformation of the internal structure of the battery pack, and causing failure of components such as the internal circuit, battery cell connector, and insulation box. A moving device 12 is also arranged on the bottom surface of the main box 1 to assist the battery pack in moving. Preferably, the moving device 12 is directly arranged on the reinforcing ribs.

[0039] In this embodiment, the reinforcing ribs include transverse reinforcing ribs 10 and longitudinal reinforcing ribs 11. Preferably, the width of the longitudinal reinforcing ribs 11 is significantly larger than the transverse reinforcing ribs 10. While providing greater rigid support for the main box body 1, the moving device 12 can also be directly installed on the longitudinal reinforcing ribs 11, making the main box body 1 more stable when moving.

[0040] In this embodiment, the specific structure of the moving device 12 can be adjusted according to the actual usage scenario. For example, the moving device 12 can be a moving device 12 such as a universal ball, a roller or a slider, so as to facilitate the horizontal movement of the main box 1.

[0041] In one embodiment, a combination socket 13 is provided on a side end face of the main box 1. The power signal and control signal of the battery pack share the combination socket 13, which can reduce the number of electrical connections during the battery replacement process and improve the operating efficiency. The combination socket 13 includes a socket housing 131, contacts, buckles 135, mounting flanges 8 and sealing rings. The contacts include two power contacts, namely a first power contact 132 and a second power contact 133. The two power contacts are used for charging and discharging the battery pack. In actual use, the battery pack is electrically connected to other parts on the vehicle and the charger of the battery replacement station through the combination socket 13. For example, when the battery pack is installed on the vehicle, the combination socket 13 is connected to other electrical devices on the vehicle, and the battery pack uses the power contacts of the combination socket 13 to discharge; however, when the battery pack is installed in the battery replacement station, the battery pack uses the power contacts on the combination socket 13 to charge. The contacts of the combination socket 13 also include N (N≥4) signal contacts 134, which are used for power supply, wake-up, communication and other functions of the control circuit in the battery pack. This effectively reduces the complexity of the connector, saves the time for disassembly and assembly of the battery pack harness, and simplifies the battery replacement process. It also takes into account both economy and structural reliability. The combination socket 13 is fixed by screws 136.

[0042] In one embodiment, handles 15 are provided on both sides of the battery pack, respectively, so that the staff can conveniently pull out the battery pack from the vehicle body or the charging rack when changing the battery, and carry the battery pack for a short time.

[0043] In one embodiment, a waterproof breathable valve 14 is provided at the side end of the battery pack, and the waterproof breathable valve 14 dynamically balances the pressure inside and outside the battery pack by exchanging internal and external gases. When the internal pressure of the battery pack rises to a certain level, the waterproof breathable valve 14 will enter an explosion-proof pressure relief state. At this time, the inside of the battery pack is directly connected to the outside world, so that the gas is quickly discharged and the pressure is reduced, which plays an explosion-proof role.

[0044] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0045] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A battery pack for battery replacement, characterized in that: It includes a main box body and a cover body; An opening, a baffle plate sleeved outside the opening, and bolt holes surrounding the main box body and the baffle plate are arranged on one end surface of the main box body; The cover body comprises a groove for sealingly sleeved on the baffle, a connecting flange is disposed and fixed on the cover body, and a flange hole of the connecting flange is bolted to the bolt hole.

2. The battery pack according to claim 1, characterized in that: A mounting flange is fixedly arranged on the top of the main box body, the bolt holes are located in the mounting flange, and the baffle is fixed to the mounting flange.

3. The battery pack according to claim 2, characterized in that: The mounting flange is perpendicular to the side wall of the main box body, and the baffle is perpendicular to the mounting flange.

4. The battery pack according to claim 3, characterized in that: The cover body comprises a lower edge for sleeve-connecting with the outer side of the main box body, and the lower edge is arranged around the outer end of the connecting flange.

5. The battery pack according to claim 1, characterized in that: The bottom surface of the main box is fixedly provided with reinforcing ribs and a moving device for assisting the main box to move.

6. The battery pack according to claim 5, characterized in that: The reinforcing ribs include transverse reinforcing ribs and longitudinal reinforcing ribs which are perpendicular to each other.

7. The battery pack according to claim 6, characterized in that: The moving device includes a universal ball or a roller.

8. The battery pack according to claim 1, characterized in that: A combined socket is arranged on the side end surface of the main box body, and the combined socket comprises a socket shell, contacts, buckles, a mounting flange and a sealing ring.

9. The battery pack according to claim 1, characterized in that: Both side end surfaces of the main box body are provided with handles for pulling and moving the main box body.

10. The battery pack according to claim 1, characterized in that: A waterproof and breathable valve is arranged on the side end surface of the main box body.

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