Vehicle-mounted battery pack

Abstract

The utility model provides a vehicle-mounted battery pack, which comprises a battery pack frame, a battery pack cover and a battery pack, the battery pack frame comprises a central axis cavity, a first side cavity and a second side cavity, the central axis cavity extends along the central axis direction, the first side cavity and the second side cavity are positioned on two sides of the central axis cavity, and a plurality of functional modules are arranged in the central axis cavity; the plurality of battery packs are sequentially arranged from the first end of the first side cavity to the second end of the first side cavity, and are sequentially arranged from the second end of the second side cavity to the first end of the second side cavity; the two alignment hanging lugs are respectively arranged at the first end and the second end of the battery pack frame along the central axis direction; the two vertical plug pieces are respectively arranged on the first side and the second side of the battery pack frame and are distributed in a central symmetry manner based on the central point of the central axis; the two air conditioner modules are arranged at the second end of the first side edge cavity and the first end of the second side edge cavity correspondingly and are distributed in a central symmetry mode based on the center point of the central axis. The air conditioner and the battery pack in the vehicle-mounted battery pack can be arranged in a left-right balanced mode, so that the stability of the battery pack is good, and the driving safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of energy storage, and specifically to an in-vehicle battery pack. Background Art

[0002] For large new energy vehicles, the weight of each battery pack in the in-vehicle battery pack is very large (for example: the weight of a single battery pack can reach 4.5 tons), and usually only a battery swapping robot or a forklift can be used for installation (the battery swapping robot has two forks on the left and right, equipped with weight sensors. When the battery pack is unbalanced and the unbalanced force exceeds the allowable range of the weight sensor, the robot will report a fault and the equipment cannot work). If the arrangement of the battery packs in the in-vehicle battery pack is improper, it will cause a large distance between the center and the center of gravity of the in-vehicle battery pack, which will have a great impact on the stability of the vehicle during driving, especially during turning or braking.

[0003] Moreover, many in-vehicle battery packs have only one plug-in direction. Since workers cannot accurately observe the direction of the battery pack when using a forklift, once it is reversed, the large battery module has to be removed and reinstalled, which all pose obstacles to the battery replacement of large new energy vehicles.

[0004] Therefore, the utility model provides an in-vehicle battery pack. Summary of the Utility Model

[0005] Aiming at the problems in the prior art, the purpose of the utility model is to provide an in-vehicle battery pack, which overcomes the difficulties of the prior art. The air conditioner and the battery pack can be evenly arranged on the left and right, the overall weight is evenly balanced on the left and right, the stability of the battery pack is good, and it is beneficial to improve driving safety.

[0006] An embodiment of the utility model provides an in-vehicle battery pack, including:

[0007] A battery pack frame, the battery pack frame includes a central axis cavity extending along the central axis direction, a first side cavity and a second side cavity located on both sides of the central axis cavity, and a plurality of functional modules are arranged in the central axis cavity;

[0008] A plurality of battery packs are respectively arranged in sequence from the first end to the second end of the first side cavity and from the second end to the first end of the second side cavity;

[0009] Two pairs of positioning lugs are respectively arranged at the first end and the second end of the battery pack frame along the central axis direction;

[0010] Two vertical plug members, the vertical plug members are respectively arranged on the first side and the second side of the battery pack frame, the vertical plug members have a swapping plug extending in the vertical direction for electrical connection with the vehicle, and are centrally symmetrically distributed based on the center point of the central axis; and

[0011] Two air-conditioning modules, and the two vertical plug pieces are arranged at the second end in the first side cavity and the first end in the second side cavity, and the two air-conditioning modules are centrally symmetrically distributed based on the center point of the central axis.

[0012] Preferably, it further includes two pairs of support hanging ears, and each pair of the support hanging ears is respectively arranged at the first end and the second end of the battery pack frame along the direction of the central axis.

[0013] Preferably, the distance between the alignment hanging ear and the support hanging ear on the same side is the same.

[0014] Preferably, a voltage control box, a voltage distribution box, a water-cooled resistor, and a fan are sequentially arranged in the central axis cavity along the direction of the central axis, and the voltage control box is respectively connected to the voltage distribution box, the water-cooled resistor, and the fan.

[0015] Preferably, the voltage distribution box is respectively electrically connected to the battery pack.

[0016] Preferably, the voltage control box is respectively electrically connected to the replacement power plug of the vertical plug piece.

[0017] Preferably, the battery pack frame is a rectangular frame.

[0018] Preferably, the battery pack frame includes a plurality of longitudinal connecting ribs and a plurality of transverse connecting ribs;

[0019] The longitudinal connecting ribs connect a group of side walls of the battery pack frame along the direction of the central axis;

[0020] The transverse connecting ribs are perpendicular and staggered with the longitudinal connecting ribs, and connect the other group of side walls of the battery pack frame along the second direction perpendicular to the direction of the central axis.

[0021] Preferably, each alignment hanging ear is provided with at least one pair of alignment holes.

[0022] Preferably, each of the first side cavity and the second side cavity is provided with three battery pack positions, and two battery packs are stacked in each battery pack position.

[0023] A vehicle-mounted battery pack of the present utility model can enable the air conditioners to be evenly arranged on the left and right, accessories such as a high-voltage distribution box are arranged in the middle of the battery pack, and both the air conditioners and the battery pack in the package can be evenly arranged on the left and right. The center of the battery module coincides with the center of gravity of the volume, the overall weight is balanced on the left and right, the battery pack has good stability, which is beneficial to improving driving safety, and is also friendly to the replacement power equipment. It is possible to perform blind plugging without distinguishing the two ends of the battery pack. Description of the Drawings

[0024] Other features, objects, and advantages of the present utility model will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0025] Figure 1 This is a perspective view of a vehicle-mounted battery pack of the present utility model.

[0026] Figure 2 This is a top view of a vehicle-mounted battery pack of the present utility model.

[0027] Figure 3 This is a side view of a vehicle-mounted battery pack of the present utility model.

[0028] Reference numerals

[0029] 1 Battery pack frame

[0030] 2 Battery pack

[0031] 3 Air conditioning module

[0032] 4 Voltage distribution box

[0033] 5 Water-cooled resistor

[0034] 6 Fan

[0035] 7 Support lug

[0036] 8 Alignment lug

[0037] 9 Vertical plug

[0038] 10 Voltage box Detailed implementation manners

[0039] The following uses specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present application. The present application can also be implemented or applied through other different specific implementation manners. Various details in the present application can also be modified or changed according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0040] The following takes the accompanying drawings as a reference and details the embodiments of the present application so that those skilled in the technical field to which the present application belongs can easily implement it. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0041] In the descriptions of the present application, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics represented in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics represented can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples represented in the present application and the features of different embodiments or examples.

[0042] In addition, the terms "first" and "second" are only used for indicating purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the descriptions of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0043] To clearly illustrate the present application, devices irrelevant to the description are omitted, and the same or similar components throughout the specification are given the same reference signs.

[0044] Throughout the specification, when it is said that a device is "connected" to another device, this includes not only the case of "direct connection", but also the case of "indirect connection" with other elements placed therebetween. In addition, when it is said that a certain device "includes" a certain component, unless there is a particularly contrary record, it does not exclude other components, but means that other components can also be included.

[0045] When it is said that a device is "above" another device, this can be directly above the other device, but there can also be other devices therebetween. When it is said that a device is "directly" "above" another device, there are no other devices therebetween.

[0046] Although in some instances the terms first, second, etc. are used herein to denote various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first interface and a second interface, etc. are indicated. Furthermore, as used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should be further understood that the terms "comprises", "comprising" indicate the presence of the features, steps, operations, elements, components, items, kinds, and / or groups, but do not preclude the presence, occurrence or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are to be construed as inclusive, or meaning any one or any combination. Thus, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition will occur only when the combination of elements, functions, steps or operations are mutually exclusive in some manner.

[0047] The technical terms used herein are only for referring to specific embodiments and are not intended to limit the present application. The singular forms used herein also include the plural forms as long as the statements do not clearly indicate the contrary meaning. The meaning of "comprising" used in the specification is to embody specific features, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other features, regions, integers, steps, operations, elements and / or components.

[0048] Although not defined otherwise, including the technical terms and scientific terms used herein, all terms have the same meaning as generally understood by those skilled in the technical field to which this application pertains. Terms defined in commonly used dictionaries are additionally interpreted to have a meaning consistent with the relevant technical literature and the content currently presented, and should not be overly interpreted as ideal or very formulaic meanings as long as they are not defined.

[0049] Figure 1 It is a perspective view of a vehicle-mounted battery pack of the present utility model. Figure 2 It is a top view of a vehicle-mounted battery pack of the present utility model. Figure 3 It is a side view of a vehicle-mounted battery pack of the present utility model. As Figures 1 to 3As shown in the figure, the in-vehicle battery pack of the present utility model includes: a battery pack frame 1, a plurality of battery packs 2, two pairs of alignment lugs 8, two vertical plug members 9, and two air-conditioning modules 3. The battery pack frame 1 includes a central axis cavity extending along the central axis direction, a first side cavity and a second side cavity located on both sides of the central axis cavity, and a plurality of functional modules are arranged in the central axis cavity. The battery packs 2 are arranged in sequence from the first end to the second end of the first side cavity and from the second end to the first end of the second side cavity. The two pairs of alignment lugs 8 are respectively arranged at the first end and the second end of the battery pack frame 1 along the central axis direction. The two vertical plug members 9 are respectively arranged on the first side and the second side of the battery pack frame 1 and are centrally symmetrically distributed based on the center point of the central axis. The vertical plug member 9 has a replacement plug extending in the vertical direction for electrical connection with the vehicle. The two air-conditioning modules 3 are arranged at the second end of the first side cavity and the first end of the second side cavity, and the two air-conditioning modules 3 are centrally symmetrically distributed based on the center point of the central axis.

[0050] In a preferred embodiment, it further includes two pairs of support lugs 7, and each pair of support lugs 7 is symmetrically arranged at the first end and the second end of the battery pack frame 1 along the central axis direction respectively, but not limited thereto.

[0051] In a preferred embodiment, the distance between the alignment lug 8 and the support lug 7 on the same side is the same, but not limited thereto.

[0052] In a preferred embodiment, a voltage control box, a voltage distribution box 4, a water-cooled resistor 5, and a fan 6 are sequentially arranged in the central axis cavity along the central axis direction. The voltage control box is respectively connected to the voltage distribution box 4, the water-cooled resistor 5, and the fan 6, but not limited thereto.

[0053] In a preferred embodiment, the voltage distribution box 4 is respectively electrically connected to the battery packs 2, but not limited thereto.

[0054] In a preferred embodiment, the voltage control box is respectively electrically connected to the replacement plug of the vertical plug member 9, but not limited thereto.

[0055] In a preferred embodiment, the battery pack frame 1 is a rectangular frame, but not limited thereto.

[0056] In a preferred embodiment, the battery pack frame 1 includes a plurality of longitudinal connecting ribs and a plurality of transverse connecting ribs, but not limited thereto.

[0057] The longitudinal connecting ribs connect a group of side walls of the battery pack frame 1 along the central axis direction, but not limited thereto.

[0058] The transverse connecting ribs are vertically staggered with the longitudinal connecting ribs and connect the other group of side walls of the battery pack frame 1 along the second direction perpendicular to the central axis direction, but not limited thereto.

[0059] In a preferred embodiment, each alignment lug 8 is provided with at least one alignment hole, but not limited thereto.

[0060] In a preferred embodiment, each of the first side cavity and the second side cavity is provided with three battery pack positions, and two battery packs are stacked in each battery pack position, but not limited thereto.

[0061] The vehicle-mounted battery pack in this embodiment includes a power battery system, a battery cooling system, an internal and external fire extinguisher system, a battery self-balancing system, a manual charging port, a battery swapping plug, etc. and parts thereof; among them, the power battery system mainly includes a power battery, a high and low voltage junction box, a BMS box, and a high and low voltage wire harness, which are the most important components of the battery swapping battery pack and are the parts for storing electrical energy on the battery pack. The battery cooling system is a device for dissipating heat and heating the battery pack, and its main function is to keep the battery pack at an appropriate temperature for charging and discharging. The internal and external fire extinguisher system mainly ensures safety, and its main working principle is to release fire extinguishing agent after the system detects an abnormality in the battery pack to extinguish the initial fire, thereby ensuring the safety of the battery pack. The battery self-balancing system mainly solves the problem of inaccurate SOC of the battery pack after long-term use. Other components mainly include a manual charging port, a battery swapping plug, a display screen, etc., which are auxiliary devices for the battery pack to work.

[0062] The implementation process of the present utility model is as follows:

[0063] In the vehicle-mounted battery pack of the present utility model, the battery pack frame 1 includes a central axis cavity extending along the central axis direction (X direction), a first side cavity and a second side cavity located on both sides of the central axis cavity, and several functional modules are arranged in the central axis cavity. The battery packs 2 are arranged in sequence from the first end to the second end of the first side cavity and from the second end to the first end of the second side cavity respectively. Two alignment lugs 8 are arranged at the first end and the second end of the battery pack frame 1 along the central axis direction respectively. Two vertical plug members 9 are arranged on the first side and the second side of the battery pack frame 1 respectively and are centrally symmetrically distributed based on the center point of the central axis. The vertical plug member 9 has a battery swapping plug extending in the vertical direction for electrical connection with the vehicle. Therefore, even when installing the vehicle-mounted battery pack, after the vehicle-mounted battery pack is horizontally rotated 180°, the vertical plug member 9 can still be docked with the vehicle body, and it is possible to perform blind plugging without distinguishing the two ends of the battery pack. Two air-conditioning modules 3 are arranged at the second end of the first side cavity and the first end of the second side cavity, and the two air-conditioning modules 3 are centrally symmetrically distributed based on the center point of the central axis. Since the weight of the battery pack 2 is much larger than the weight of the air-conditioning module 3, after the layout of the present utility model, the battery packs 2 in the first side cavity and the second side cavity can be centrally symmetrically distributed based on the center point of the central axis, so that the center and the center of gravity of the vehicle-mounted battery pack can coincide, reducing the inertial effect of the battery pack on the vehicle body when the heavy truck is driving and stabilizing the control of the vehicle body.

[0064] Each pair of support lugs 7 are symmetrically arranged at the first end and the second end of the battery pack frame 1 along the central axis direction respectively. The distance between the alignment lugs 8 and the support lugs 7 on the same side is the same. Inside the central axis cavity, a voltage control box, a voltage distribution box 4, a water-cooled resistor 5, and a fan 6 are arranged in sequence along the central axis direction. The voltage control box is respectively connected to the voltage distribution box 4, the water-cooled resistor 5, and the fan 6. The voltage distribution box 4 is electrically connected to the battery packs 2 respectively. The voltage control box is electrically connected to the swapping plug of the vertical plug-in member 9 respectively. The battery pack frame 1 is a rectangular frame, and the battery pack frame 1 includes a plurality of longitudinal connecting ribs and a plurality of transverse connecting ribs. The longitudinal connecting ribs connect a group of side walls of the battery pack frame 1 along the central axis direction. The transverse connecting ribs are vertically staggered with the longitudinal connecting ribs and connect the other group of side walls of the battery pack frame 1 along the second direction (Y direction) perpendicular to the central axis direction. Each alignment lug 8 is provided with at least one alignment hole. Three battery pack positions are provided in each of the first side cavity and the second side cavity, and two battery packs are stacked in each battery pack position. The two battery packs in the battery pack position overlap along the third direction (Z direction, where the X direction, Y direction, and Z direction are perpendicular to each other).

[0065] When a swapping robot or a forklift transports an in-vehicle battery pack for swapping, since the air conditioner and the battery packs of the in-vehicle battery pack of the present utility model can be evenly arranged on the left and right, the overall weight is balanced on the left and right, and the center of the battery module coincides with the center of gravity of the volume, ensuring the balance of the in-vehicle battery pack during transportation. The swapping robot or the forklift will not trigger a fault alarm due to imbalance, and the equipment can work safely.

[0066] The in-vehicle battery pack of the present utility model is installed on a heavy vehicle (such as an unmanned container truck, etc.). Since the center of the battery module coincides with the center of gravity of the volume, when the heavy truck is driving, the inertial effect of the battery pack on the vehicle body is reduced, which is beneficial to the stability of the whole vehicle during driving (especially in the steering or braking state).

[0067] In summary, the purpose of the present utility model is to provide an in-vehicle battery pack, which can evenly arrange the air conditioner on the left and right, arrange accessories such as a high-voltage distribution box in the middle of the battery pack, and the air conditioner in the pack is evenly arranged on the left and right. The center of the battery module coincides with the center of gravity of the volume, the overall weight is balanced on the left and right, the battery pack has good stability, which is beneficial to improving driving safety, and is also friendly to the swapping equipment, and blind plugging can be carried out without distinguishing the two ends of the battery pack.

[0068] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. A vehicle-mounted battery pack, characterized in that, Including: A battery pack frame (1), the battery pack frame (1) includes a central axis cavity extending along the central axis direction, a first side cavity and a second side cavity located on both sides of the central axis cavity, and a number of functional modules are arranged in the central axis cavity; A number of battery packs (2), which are arranged in sequence from the first end to the second end of the first side cavity respectively, and are arranged in sequence from the second end to the first end of the second side cavity; Two pairs of alignment lugs (8), which are respectively arranged at the first end and the second end of the battery pack frame (1) along the central axis direction; Two vertical plug members (9), the vertical plug members (9) are respectively arranged on the first side and the second side of the battery pack frame (1) and are centrally symmetrically distributed based on the center point of the central axis, and the vertical plug members (9) have a replacement plug extending in the vertical direction for electrical connection with the vehicle; and Two air conditioning modules (3), the air conditioning modules (3) are arranged at the second end of the first side cavity and the first end of the second side cavity, and the two air conditioning modules (3) are centrally symmetrically distributed based on the center point of the central axis.

2. The on-vehicle battery pack according to claim 1, wherein, It further includes two pairs of support lugs (7), and each pair of the support lugs (7) are respectively symmetrically arranged at the first end and the second end of the battery pack frame (1) along the central axis direction.

3. The vehicle-mounted battery pack according to claim 2, wherein The distance between the alignment lug (8) and the support lug (7) on the same side is the same.

4. A vehicle-mounted battery pack according to claim 1, characterized in that, A voltage control box, a voltage distribution box (4), a water-cooled resistor (5), and a fan (6) are sequentially arranged in the central axis cavity along the central axis direction, and the voltage control box is respectively connected to the voltage distribution box (4), the water-cooled resistor (5), and the fan (6).

5. The on-vehicle battery pack according to claim 4, characterized in that, The voltage distribution box (4) is respectively electrically connected to the battery packs (2).

6. The on-vehicle battery pack according to claim 4, wherein, The voltage control box is respectively electrically connected to the replacement plugs of the vertical plug members (9).

7. An in-vehicle battery pack according to claim 1, characterized in that, The battery pack frame (1) is a rectangular frame.

8. The vehicle-mounted battery pack according to claim 6, characterized in that, The battery pack frame (1) includes a number of longitudinal connecting ribs and a number of transverse connecting ribs; The longitudinal connecting ribs connect a group of side walls of the battery pack frame (1) along the central axis direction; The transverse connecting ribs are vertically staggered with the longitudinal connecting ribs and connect the other group of side walls of the battery pack frame (1) along the second direction perpendicular to the central axis direction.

9. The on-vehicle battery pack according to claim 6, characterized in that, Each of the alignment lugs (8) is provided with at least one alignment hole.

10. An in-vehicle battery pack as claimed in claim 1, wherein, Three battery pack positions are respectively arranged in the first side cavity and the second side cavity, and two battery packs are stacked in each of the battery pack positions.

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