CN217522137U

CN217522137U - Battery box, battery pack, battery module and electric operation machine

Info

Publication number: CN217522137U
Application number: CN202221244658.3U
Authority: CN
Inventors: 王军; 王晗; 汪美奇; 刘刚
Original assignee: Sany Heavy Industry Co Ltd
Current assignee: Sany Lithium Energy Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-09-30
Anticipated expiration: 2032-05-23

Abstract

The utility model relates to a remove energy storage equipment technical field, provide a battery box, battery package, battery module and electrical operation machinery, this battery box includes: the device comprises a body, a first fixing part and a second fixing part, wherein an opening is formed in one side wall of the body; the mounting frame is arranged on the inner surface of the side wall and forms an electrical inspection window area together with the opening, and positive and negative connecting terminals and a maintenance switch which are positioned in the electrical inspection window area are arranged on the mounting frame; the cover body is detachably covered on the body and covers the opening. The embodiment of the utility model provides a technical scheme is through setting up the opening on the lateral wall at the battery box to set up the mounting bracket in the inside this open-ended position that corresponds of body, enclose into electrical overhaul window district jointly based on this opening and this mounting bracket, be used for setting up positive negative pole binding post and maintenance switch, thereby parts such as the battery cell in the convenient to overhaul battery box.

Description

Battery box, battery pack, battery module and electric operation machine

Technical Field

The utility model relates to a remove energy storage equipment technical field, especially relate to a battery box, battery package, battery module and electric operation machinery.

Background

With the popularization of new energy technologies in various vehicles and work machines, and the development of various mobile energy storage devices, the functions of the battery pack are increasingly developed.

Currently, the positions of different functional interfaces are generally independent in a battery pack. For example, the connection terminal of the battery pack and the maintenance switch of the battery pack are respectively disposed at different positions, and the battery pack with such a structure is inconvenient to overhaul.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery box, battery package, battery module and electric operation machinery for solve the inconvenient defect of overhauing of battery package among the prior art, realize parts such as the battery cell in the convenient to overhaul battery box.

The utility model provides a battery box, include:

a body, one of side walls of which is formed with an opening;

the mounting rack is arranged on the inner surface of the side wall and forms an electric overhaul window area together with the opening, and positive and negative connecting terminals and a maintenance switch which are positioned in the electric overhaul window area are arranged on the mounting rack;

and the cover body is detachably covered on the body and covers the opening.

According to the utility model provides a pair of battery box, the mounting bracket includes:

an inner plate located in the body and disposed opposite the opening;

the first side plate and the second side plate are positioned on two sides of the inner plate and are connected with the inner plate and the side wall of the body.

According to the utility model provides a pair of battery box, be equipped with the bayonet socket on the inner panel, maintenance switch sets up on the bayonet socket, just maintenance switch is used for and sets up this internal battery cell electricity is connected.

According to the battery box body provided by the utility model, the first side plate is also provided with a heating terminal,

the heating terminal is used for connecting a heating plate arranged in the body, and is positioned below the positive and negative connecting terminals along the height direction of the battery box body.

According to the utility model provides a pair of battery box, still be provided with on the inner panel and be used for connecting the setting and be in this internal battery management unit's signal connection terminal.

According to the utility model provides a pair of battery box, still be provided with at least one explosion-proof valve on the inner panel.

According to the utility model provides a pair of battery box, the body the surface of lateral wall be provided with the recess that the opening corresponds, the lid with the shape phase-match of recess just installs in the recess.

The utility model also provides a battery pack, which comprises a battery unit and any one of the battery box bodies,

the battery unit is arranged in the body, and the battery unit is electrically connected with the positive and negative pole wiring terminals and the maintenance switch on the mounting frame respectively.

The utility model also provides a battery module, which comprises a plurality of the battery packs, and the battery packs are stacked;

and the adjacent positive and negative connecting terminals of the battery pack are connected through cables.

The utility model also provides an electric operation machine, including any kind of battery box of the aforesaid or any kind of battery package of the aforesaid or any kind of above-mentioned battery module.

The embodiment of the utility model provides a battery box is through setting up the opening on the lateral wall to set up the mounting bracket in the inside this open-ended position that corresponds of body, enclose into electrical overhaul window district jointly based on this opening and this mounting bracket, be used for setting up positive negative pole binding post and maintenance switch, thereby parts such as battery cell in the convenient to overhaul battery box.

The embodiment of the utility model provides an among battery package, battery module and the electric operating machine, owing to used as above the battery box, consequently possess like above each item advantage, no longer describe herein.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded schematic view of a first battery box provided by the present invention;

fig. 2 is an exploded schematic view of a second battery box provided by the present invention;

fig. 3 is a schematic structural diagram of a battery pack including the battery case in fig. 1 according to the present invention;

fig. 4 is a schematic structural diagram of a battery pack including the battery case in fig. 2 according to the present invention;

fig. 5 is a second schematic structural view of a battery pack including the battery box in fig. 2 according to the present invention;

reference numerals are as follows:

100: a battery case;

110: a body; 111: an opening;

120: a mounting frame; 121: an inner plate; 122: a first side plate; 123: a second side plate; 124: a bayonet;

130: a cover body; 140: positive and negative terminals; 150: a maintenance switch; 160: a heating terminal; 170: a signal connection terminal; 180: an explosion-proof valve; 190: a groove;

200: a battery cell;

1000: a battery pack.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood as specific cases to those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

While the embodiments of the present invention will be described with reference to fig. 1 to 5, it should be understood that the following is only an exemplary embodiment of the present invention and does not limit the present invention in any way.

Fig. 1 is a schematic diagram of an explosion structure of a first battery box provided by the present invention, please refer to fig. 1, the battery box 100 includes: a body 110, a mounting frame 120 and a cover 130. Wherein, the body 110 is used for accommodating a battery unit 200 (see fig. 2, fig. 2 is an exploded structural schematic diagram of a second battery box provided by the present invention, and fig. 2 shows an accommodating relationship between the battery box 100 and the battery unit 200), and one of the side walls of the body 110 is formed with an opening 111. The mounting bracket 120 is disposed on an inner surface of a sidewall of the body 110, the mounting bracket 120 and the opening 111 on the sidewall together define an electrical service window area, and in the electrical service window area, positive and negative electrode terminals 140 and a maintenance switch 150 are disposed. The cover 130 is detachably attached to the body 110, and the cover 130 covers the opening 111.

In the present invention, the opening 111, the mounting frame 120 and the cover 130 are in one-to-one correspondence to form an electrical access window region. It should be noted that, in the present invention, the number of the openings 111, the mounting frame 120, and the cover 130 may be multiple sets to form multiple electrical inspection window regions, which is not limited in this embodiment. For example, the two groups may be arranged on two opposite side walls of the body 110. The electrical interfaces provided in the two sets of electrical service window areas may be the same so that service may be performed from both sides. The electrical interfaces provided in the two sets of electrical service window areas may also be different to form a complete electrical service system.

The embodiment of the utility model provides a battery box 100 is through setting up opening 111 on the lateral wall to the position that corresponds this opening 111 inside body 110 sets up mounting bracket 120, encloses into electrical overhaul window district jointly based on this opening 111 and this mounting bracket 120, is used for setting up positive negative pole binding post 140 and maintenance switch 150, thereby parts such as battery unit 200 in the easy access battery box 100.

In one embodiment provided by the present invention, the mounting frame 120 comprises: an inner panel 121, a first side panel 122 and a second side panel 123. Specifically, the inner plate 121 is located in the body 110 and is disposed opposite to the opening 111, and the first side plate 122 and the second side plate 123 are located at both sides of the inner plate 121. Both ends of the first and

second side plates

122 and 123 are respectively connected to the inner plate 121 and the side wall of the body 110, so that an electrical service window region is formed between the first and

second side plates

122 and 123 and the opening 111. The mounting bracket 120 with such a structure is simple in structure and convenient to process and mount. In addition, according to the above-described structure, the upper and lower ends of the mounting frame 120 penetrate through the opening, so that cables connected to the positive and negative electrode terminals 140 can easily pass through the opening, and since the cover 130 covers the opening 111, the cables can be hidden inside the cover 130, thereby maintaining the appearance of the battery case 100 neat and beautiful.

In the above embodiment, further, the utility model provides a positive negative pole binding post 140 can be whole type structure, and the anodal and negative pole of battery unit 200 are connected respectively to two contacts in positive negative pole binding post 140, and the quick connector that the high-speed joint of being convenient for of this kind of structure corresponds.

The positive and negative electrode terminals 140 may include a positive electrode terminal and a negative electrode terminal. The positive terminal can be used to connect positive terminals or negative terminals in other battery cases 100, and correspondingly, the negative terminal can also be used to connect positive terminals or negative terminals in other battery cases 100, thereby realizing series connection or parallel connection of a plurality of battery units 200.

The positive and negative terminals 140 can be used for direct charging or discharging, and can also be connected in series or in parallel with the positive and negative terminals 140, so that a plurality of battery units 200 are combined into a battery module to charge or discharge the battery module, and the flexibility is high.

Wherein, positive binding post and negative binding post set up on first curb plate 122, and in addition, foretell positive binding post and negative binding post arrange along the direction of height of battery box 100. The structure is convenient for the positive terminal and the negative terminal to be respectively connected with the cable, and the cable crossing is avoided. But also to extend the cable in a plane parallel to the inner plate 121, which also provides a larger space for the cable.

In an embodiment of the present invention, the inner plate 121 is provided with a bayonet 124, the bayonet 124 is used for installing a maintenance switch 150 (see fig. 2), and the maintenance switch 150 is used for electrically connecting with the battery unit 200 installed in the body 110. The maintenance switch 150 is used to control the on and off of the circuit of the battery cell 200, that is, by turning off the maintenance switch 150, the circuit of the battery cell 200 is broken, ensuring that the operator performs maintenance in a safe state. The maintenance switch 150 may be an MSD (Manual Service Disconnect), so that an operator can quickly control the connection and disconnection of the circuit of the battery unit 200 at a maintenance site. The maintenance switch 150 may be connected to the bayonet 124 by a fixing member such as a bolt, but the embodiment is not limited thereto.

In an embodiment of the present invention, a liquid cooling plate may be further disposed in the body 110 of the battery case 100. This liquid cooling plate pastes and establishes on battery unit 200 for lower the temperature to battery unit 200, at the battery unit 200 in-process that generates heat continuously, also can guarantee that battery unit 200 can normally work. In the above embodiment, the liquid cooling plate may exchange heat with the battery unit 200 based on a heat exchange medium, and when in use, a cryogenic fluid needs to be continuously injected into the liquid cooling plate as the heat exchange medium. In addition, the fluid may be a liquid or a gas, which is not limited in this embodiment.

In one embodiment of the present invention, a heating plate may be further disposed in the body 110 of the battery case 100. This hot plate is established on battery unit 200 for provide the heat for battery unit 200, when battery unit 200 worked under low temperature environment, also can guarantee that battery unit 200 can normally work. In the battery case 100, the first side plate 122 may be provided with a heating terminal 160. The heating terminal 160 is used to connect the heating plates described above, thereby controlling the temperature of the battery cell 200 in cooperation with the heating plates. Along the height direction of the battery case 100, the heating terminals 160 are located below the positive and negative electrode terminals 140, which is advantageous for orderly arrangement of cables connected to the heating plate.

In an embodiment of the present invention, a battery management unit may be further disposed in the body 110 of the battery box 100 for detecting battery information such as voltage, current and temperature of each battery cell 200. The inner panel 121 is further provided with a signal connection terminal 170 to which the battery management unit is connected, and the battery information is output to the electric working machine or the battery replacement station through the signal connection terminal 170.

In addition, at least one explosion-proof valve 180 is further disposed on the inner plate 121 to ensure that the inner space of the battery box 100 has good waterproof and air-permeable properties, and has a pressure relief function under a certain pressure. Specifically, the explosion-proof valve 180 includes a microporous membrane made of expanded polytetrafluoroethylene as a raw material. The aperture of the micropores of the raw material is far larger than that of gas molecules in the air and is far smaller than the particle size of particulate matters such as water, dust and the like, so that the waterproof and breathable effects can be well realized, and dynamic internal and external pressure balance can be realized through internal and external gas exchange. The explosion-proof valve 180 is waterproof and breathable under normal pressure. Under the condition that the pressure in the battery box body 100 is higher, the high-pressure air can push open the built-in piston body on the anti-explosion valve 180, so that the interior of the battery box body 100 is directly communicated with the outside, the high-pressure air is quickly discharged, the pressure in the battery box body 100 is reduced, and the anti-explosion effect is achieved.

In any of the above embodiments, the outer surface of the sidewall of the body 110 of the battery case 100 is provided with a groove 190 corresponding to the opening 111, and the shape of the cover 130 matches the shape of the groove 190 to facilitate the installation of the cover 130 in the groove 190. The cover 130 is mounted in the groove 190 to prevent the cover 130 from protruding out of the outer surface of the sidewall of the body 110 of the battery case 100, so that the battery cases 100 can be easily stacked.

Further, the mounting bracket 120 may be integrally formed with the body 110, which may save a manufacturing process. The mounting bracket 120 may also be a separate bracket structure detachably coupled to the inner surface of the sidewall of the body 110 by a coupling member, which facilitates the detachment and installation of the mounting bracket 120.

The embodiment of the utility model provides a battery box 100 is through setting up opening 111 on the lateral wall to the position that corresponds this opening 111 inside body 110 sets up mounting bracket 120, encloses into electrical overhaul window district jointly based on this opening 111 and this mounting bracket 120, is used for setting up positive negative terminal 140 and maintenance switch 150, thereby parts such as battery unit 200 in the easy access battery box 100.

Further, by providing the mounting bracket 120 in a structure including the inner plate 121, the first side plate 122, and the second side plate 123, the manufacturing and installation are facilitated. In addition, according to the above-described structure, the upper and lower ends of the mounting frame 120 penetrate through the opening, so that cables connected to the positive and negative electrode terminals 140 can easily pass through the opening, and since the cover 130 covers the opening 111, the cables can be hidden inside the cover 130, thereby maintaining the appearance of the battery case 100 neat and beautiful.

The utility model also provides a battery pack 1000, please refer to fig. 3 to 5, this battery pack 1000 includes battery unit 200 and any kind of above-mentioned battery box 100. The battery unit 200 is disposed in the body 110 of the battery box 100, and the battery unit 200 is electrically connected to the positive and negative terminals 140 of the mounting bracket 120 of the battery box 100 and the maintenance switch 150, respectively. The structure of the battery pack 1000 can be conveniently connected with other battery packs 1000 in series or in parallel based on the positive and negative electrode connecting terminals 140. Based on the maintenance switch 150, the circuit of the chinese battery cell 200 of the battery pack 1000 can be controlled to be turned on and off. The positive and negative terminals 140 and the maintenance switch 150 are hidden inside the cover 130 in the electrical inspection window area of the battery case 100, so that the appearance of the battery case 100 is maintained neat and beautiful.

The utility model also provides a battery module, including the battery package 1000 that provides in a plurality of above-mentioned embodiments, and a plurality of battery packages 1000 pile up the setting. The positive and negative terminals 140 of adjacent battery packs 1000 are connected by cables. Specifically, the adjacent battery packs 1000 may be connected in series or in parallel as needed. According to the voltage grade and the power required by the electric equipment, the voltage grade and the electric quantity of the battery module can be improved by connecting the battery packs 1000 in series, and the electric quantity can be improved under the condition of unchanged voltage by connecting the battery packs 1000 in parallel.

The utility model also provides an electric operation machine, including any kind of battery box 100 of the aforesaid or any kind of battery package 1000 of the aforesaid or any kind of above-mentioned battery module, can realize among the electric operation machine the quick overhaul of part in the battery box 100.

In particular embodiments, the electric work machine may be various types of equipment, such as a crane, excavator, transporter, compactor, or the like.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A battery case, comprising:

the device comprises a body, a first fixing part and a second fixing part, wherein an opening is formed in one side wall of the body;

the cover body is detachably covered on the body and covers the opening.

2. The battery box of claim 1, wherein the mounting bracket comprises:

an inner plate located in the body opposite the opening;

3. The battery box body according to claim 2, wherein a bayonet is provided on the inner plate, the maintenance switch is provided on the bayonet, and the maintenance switch is used for electrically connecting with a battery unit provided in the body.

4. The battery box according to claim 2, wherein the first side plate is further provided with a heating terminal thereon,

the heating terminal is used for being connected with a heating plate arranged in the body, and is located below the positive and negative connecting terminals along the height direction of the battery box body.

5. The battery box according to claim 2, wherein the inner plate is further provided with a signal connection terminal for connecting a battery management unit provided in the body.

6. The battery box body as claimed in claim 2, wherein at least one explosion-proof valve is further provided on the inner plate.

7. The battery box according to any one of claims 1 to 6, wherein the outer surface of the side wall of the body is provided with a groove corresponding to the opening, and the cover is matched in shape with the groove and is mounted in the groove.

8. A battery pack characterized by comprising a battery cell and the battery case of any one of claims 1 to 7,

9. A battery module comprising a plurality of the battery packs according to claim 8, wherein the plurality of battery packs are stacked;

10. An electric working machine comprising the battery case according to any one of claims 1 to 7, the battery pack according to claim 8, or the battery module according to claim 9.