CN114899525A - Battery and electric working machine - Google Patents

Abstract

The invention relates to the technical field of power batteries, and provides a battery and an electric operation machine, wherein the battery comprises a battery box body, a thermal management system, an electrical system and a battery module; a plurality of mounting grooves arranged in parallel are formed in the battery box body; the heat management system comprises a plurality of liquid cooling plates, the liquid cooling plates are arranged in the battery box body and are correspondingly inserted into the mounting grooves one by one; the battery modules are arranged in the battery box body and connected to the liquid cooling plate; the electrical system comprises a module collecting copper bar which is electrically connected with each battery module. The liquid cooling plate not only plays a heat exchange function, but also is used for fixing the battery module, and the battery module, the liquid cooling plate and the module collect copper bars and are integrated together, so that a plurality of standard boxes are not required to be placed in a frame system, the structural redundancy is reduced, the space utilization rate of the battery is high, the overall energy density is higher, the process is simpler, and the reliability is higher.

Description

Battery and electric working machine

Technical Field

The invention relates to the technical field of power batteries, in particular to a battery and an electric operation machine.

Background

The power battery can provide power for transportation vehicles such as electric automobiles, electric bicycles and the like, is mainly different from a starting battery for starting an automobile engine, and the conventional power battery mostly adopts a valve port sealed lead-acid storage battery, an open tubular lead-acid storage battery, a lithium iron phosphate storage battery and the like. The power battery has excellent performance, stable discharge voltage and obvious storage time. In the related technology, the battery system of the commercial vehicle is mainly in the form of different standard box combinations, namely after the standard boxes are assembled and combined, a frame system of one set of standard boxes is additionally made, the standard boxes, the electrical system and the heat management system are independently arranged, the condition of pipeline intersection is serious, the structure is redundant, the overall energy density of the battery system is low, the space utilization rate is low, the connecting lines and the pipelines are various and complex, the process cost is high, and the reliability is low.

Disclosure of Invention

The present invention has been made to solve at least one of the problems occurring in the related art. Therefore, the battery module is directly placed in the battery box body, the battery module, the liquid cooling plate and the module collecting copper bar are integrated together, a plurality of standard boxes are not required to be placed in a frame system, structural redundancy is reduced, the space utilization rate of the battery is high, and the overall energy density is high.

The embodiment of the invention also provides the electric operation machine.

According to an embodiment of the first aspect of the present invention, there is provided a battery including:

the battery box body is internally provided with a plurality of mounting grooves which are arranged in parallel;

the heat management system comprises a plurality of liquid cooling plates, the liquid cooling plates are arranged in the battery box body and are correspondingly inserted into the mounting grooves one by one;

the battery modules are arranged in the battery box body and connected to the liquid cooling plate;

the electrical system comprises module collection copper bars, and the module collection copper bars are electrically connected to each battery module.

According to an embodiment of the present invention, the battery case further includes:

the sub-box bodies are of a cylindrical structure with two through ends, are arranged in parallel and are internally communicated, and the mounting groove is formed in each sub-box body;

the bottom plate is arranged on one side of the plurality of the sub-boxes and is suitable for sealing the sub-boxes positioned at the edge positions, and the plurality of the sub-boxes and the bottom plate are hermetically connected with the sub-boxes.

According to one embodiment of the invention, the sub-tank includes opposite first and second ends, the first end being formed with a sealing groove adapted to receive the second end of the other sub-tank.

According to one embodiment of the invention, the inner wall of the battery box body is also provided with an insulating layer.

According to an embodiment of the invention, the thermal management system further comprises:

the water cooling unit is arranged on the outer side of the battery box body and is connected to the battery box body;

the heat management assembly is electrically connected to the water chiller;

and the plurality of refrigerant pipes are communicated with the water cooling unit and the liquid cooling plate and are positioned on one side in the battery box body.

According to one embodiment of the invention, the electrical system further comprises:

the circuit management component is electrically connected with the module collection copper bar;

and the battery replacement connector is connected to the circuit management assembly through an electric wire.

According to an embodiment of the invention, the electric wire is located in the battery box body and is located at the opposite side of the refrigerant pipes.

According to an embodiment of the present invention, the battery case further includes:

the hoisting assembly is arranged on one side of the plurality of sub-boxes away from the ground and is connected to the plurality of sub-boxes;

and the supporting piece is arranged on one side of the plurality of sub-boxes close to the ground and is connected in the plurality of sub-boxes.

According to one embodiment of the invention, the hoisting assembly comprises:

the hoisting frame is connected to the plurality of sub-boxes;

and the shielding box is connected to the plurality of sub-box bodies and is suitable for placing the heat management assembly and/or the circuit management assembly.

According to a second aspect of the present invention, there is provided an electric working machine including the battery according to the first aspect of the present invention.

One or more technical solutions in the embodiments of the present invention at least have one of the following technical effects:

the battery provided by the embodiment of the first aspect of the invention comprises a battery box body, a thermal management system, an electrical system and a battery module; a plurality of mounting grooves suitable for placing the liquid cooling plate are formed in the battery box body; the heat management system comprises a plurality of liquid cooling plates, the liquid cooling plates are arranged in the battery box body and are inserted in the mounting grooves in a one-to-one correspondence manner; the battery module is arranged in the battery box body and is connected to the liquid cooling plate; the electrical system comprises a module collecting copper bar which is electrically connected with each battery module. The liquid cooling plate not only plays a heat exchange function, but also is used for fixing the battery module, and the battery module, the liquid cooling plate and the module collect copper bars and are integrated together, so that a plurality of standard boxes are not required to be placed in a frame system, the structural redundancy is reduced, the space utilization rate of the battery is high, the overall energy density is higher, the process is simpler, and the reliability is higher.

Additional aspects and advantages 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 the invention.

Drawings

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

Fig. 1 is a perspective view of a battery provided in accordance with a first embodiment of the present invention;

fig. 2 is an exploded view of a battery provided in accordance with a first embodiment of the present invention;

FIG. 3 is an exploded view of a plurality of sub-housings and a base plate according to an embodiment of the present invention;

FIG. 4 is a perspective view of a plurality of sub-housings and a base plate according to an embodiment of the present invention;

FIG. 5 is a top view of a daughter box provided in accordance with an embodiment of the present invention;

FIG. 6 is a front view of a sub-housing provided by an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 5 at A;

fig. 8 is a perspective view of a battery case provided in accordance with a second embodiment of the present invention;

fig. 9 is a perspective view of a battery case according to a third embodiment of the present invention.

Reference numerals:

100. a battery case;

110. a sub-box body; 112. mounting grooves; 114. a first end; 116. a second end; 118. a sealing groove; 1102. A first reinforcing rib; 1104. a second reinforcing rib; 1106. a bolt;

120. hoisting the assembly; 122. a hoisting frame; 124. a shielding box; 124a, a first shielding box; 124b, a second shielding box; 1242. heat dissipation holes;

130. a support member;

140. a base plate; 142. installing a box;

150. a thermal management system; 152. a water cooling unit; 154. a liquid-cooled plate; 156. a refrigerant pipe; 158. a thermal management component;

160. a battery module;

170. an electrical system; 172. the module collects the copper bar; 174. an electric wire; 176. a battery replacement connector; 178. a circuit conduit assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and 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" are to 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. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the related technology, the battery system of the commercial vehicle is mainly in the form of different standard box combinations, namely after the standard boxes are assembled and combined, a frame system of one set of standard boxes is additionally made, the standard boxes, the electrical system and the heat management system are independently arranged, the condition of pipeline intersection is serious, the structure is redundant, the overall energy density of the battery system is low, the space utilization rate is low, the connecting lines and the pipelines are various and complex, the process cost is high, and the reliability is low. Referring to fig. 1 to 9, the battery according to the first embodiment of the present invention includes a battery case 100, a thermal management system 150, a battery module 160, and an electrical system 170.

The battery case 100 has a certain accommodating space, and the battery modules 160 can be placed in the battery case 100 in multiple rows, multiple columns and multiple layers to increase the storage capacity of the battery, thereby improving the cruising ability.

A plurality of mounting grooves 112 are formed in the battery case 100 in parallel, and the mounting grooves 112 are used for accommodating the liquid cooling plate 154.

It should be noted that the mounting grooves 112 may be horizontally disposed, vertically disposed, or obliquely disposed, and the space between adjacent mounting grooves 112 is matched with the size of the battery module 160, so as to ensure that the space in the battery box 100 is fully utilized.

The thermal management system 150 includes a plurality of liquid cooling plates 154, and the plurality of liquid cooling plates 154 are disposed in the battery box 100 and are inserted into the plurality of mounting slots 112 in a one-to-one correspondence.

The number of the battery modules 160 is plural, the battery modules 160 can be placed in the battery case 100 in a plurality of rows and/or columns and/or layers, and each battery module 160 is connected to the liquid cooling plate 154. The liquid cooling plate 154 not only performs a heat exchange function, but also fixes the battery module 160.

The electrical system 170 includes a module collection copper bar 172, and the module collection copper bar 172 is electrically connected to each battery module 160, so that different battery modules 160 can be connected in series or in parallel, and an independent standard box is not required, thereby reducing inter-box wiring harnesses and a box structure.

Referring to fig. 1 to 9, in the battery box 100, a plurality of rows and/or a plurality of columns and/or a plurality of layers of battery modules 160 may be disposed, the battery modules 160, the liquid cooling plate 154 and the module collecting copper bar 172 are integrated together, an independent standard box is not required to be disposed in the battery box 100, unnecessary structures are reduced, the space utilization rate is high, and meanwhile, the arrangement of the pipelines in the battery box 100 is uniformly managed, so that the situation of crossed pipelines is reduced. The liquid cooling plate 154 is inserted into the mounting groove 112, so that the thermal management system 150, the battery box 100 and the battery module 160 are fully combined, the space utilization rate is improved, and the difficulty of pipeline arrangement is reduced.

In some embodiments, the battery case 100 includes a plurality of sub-cases 110, and the sub-cases 110 have a cylindrical structure with two ends penetrating through, and two ends of the cylindrical structure have openings. The plurality of sub-cases 110 are arranged in parallel, the interiors of the adjacent sub-cases 110 are communicated with each other to form an integral case structure, and an installation groove 112 suitable for placing a liquid cooling plate 154 is formed in each sub-case 110.

It should be noted that the plurality of sub-boxes 110 may be vertically arranged in parallel, or may be horizontally arranged in layers, and the number of the sub-boxes 110 is not limited.

In other embodiments, the battery box 100 may be formed by splicing a plurality of side plates, or may be an integral structure, so as to meet the space requirement.

The temperature change may occur when the battery module 160 operates and exchanges heat with the outside, and in order to improve the stability of the battery module 160 during operation and reduce the influence of the temperature change on the battery module 160, the temperature of the battery module 160 in the battery case 100 may be managed.

In some embodiments, the battery case 100 further includes a bottom plate 140, the bottom plate 140 is disposed at one side of the plurality of sub-cases 110, the bottom plate 140 is used to enclose the sub-cases 110 at the edge positions, and the plurality of sub-cases 110 and the bottom plate 140 are hermetically connected.

The bottom plate 140 is adapted to enclose the sub-case 110 at the edge position, so that the sub-case 110 is entirely in a sealed state, which is advantageous for installation of the battery module and temperature management. The battery module 160 is located in the sealed space, the probability of being interfered by external temperature factors is reduced, the temperature stability of the battery module 160 is improved, and when the battery box 100 is connected to the thermal management system 150, the thermal management system 150 has high heat exchange efficiency, and is more energy-saving and environment-friendly.

In some embodiments, the sub-tank 110 includes opposing first and second ends 114, 116, the first end 114 being formed with a seal groove 118, the second end 116 of an adjacent sub-tank 110 being adapted to be inserted within the seal groove 118.

The second end 116 of the sub-box 110 is inserted into the first end 114 of the adjacent sub-box 110, and so on, and the sub-boxes 110 are connected in sequence to form a layered/parallel box structure. The number of the sub-box bodies 110 is not limited, and the requirements of different power batteries can be met. In the power battery with higher endurance requirement, the number of the sub-box bodies 110 is larger, and in the power battery with lower endurance requirement, the number of the sub-box bodies 110 is smaller.

The sealing groove 118 is matched with the second end 116 of the other sub-case 110 to form a sealing structure after connection, so that heat exchange between the battery case and the outside can be reduced.

In some embodiments, an insulating layer (not shown) is disposed on the inner wall of the battery case 100, and the insulating layer may be insulating cotton, mesh cloth, foam, or the like.

In order to facilitate the installation of the heat insulation layer, the heat insulation layer is arranged on the inner wall of the sub-box body 110, and after the plurality of sub-box bodies 110 are connected in parallel, the heat insulation layers are in contact with each other to form a closed heat insulation space.

According to the battery provided by the embodiment of the invention, the thermal management system 150 is connected to the plurality of battery modules 160, so that the temperatures of the battery modules 160 and the interior of the battery box 100 can be managed, and the battery modules 160 are ensured to be in a safe and efficient temperature range.

In some embodiments, the thermal management system 150 further includes a water chiller 152, a coolant tube 156, and a thermal management assembly 158.

The water cooler unit 152 is disposed outside the battery case 100 and connected to the battery case 100. The thermal management assembly 158 is electrically connected to the water chiller block 152 for automatically or manually controlling the start-up and operating power of the water chiller block 152. The number of the refrigerant pipes 156 is multiple, and the refrigerant pipes 156 are communicated with the water cooling unit 152 and the liquid cooling plate 154, the water cooling unit 152 radiates heat to the outside, the temperature of the refrigerant in the refrigerant pipes 156 can be reduced, the refrigerant circulates in the liquid cooling plate 154 along the refrigerant pipes 156, the temperature of the liquid cooling plate 154 can be reduced, and the temperature management of the battery is further realized.

It should be noted that the thermal management component 158 may control the operation power of the water chiller unit 152 according to the input or output power of the battery, or may install a temperature sensor in the battery box 100, and control the operation power of the water chiller unit 152 according to the temperature information of the temperature sensor.

In order to avoid the mutual interference between the pipelines, the plurality of cooling medium pipes 156 are disposed on the same side in the battery case 100, and the liquid inlet and the liquid outlet of the liquid cooling plate 154 are also disposed on the same side.

According to the battery provided by the embodiment of the invention, the electrical system 170 comprises the module collection copper bars 172, the module collection copper bars 172 can be connected to each battery module 160, an independent standard box is not required to be arranged in the battery, unnecessary structures are reduced, the space utilization rate is high, the pipeline arrangement in the battery box body 100 is uniformly managed, and the condition of pipeline crossing is reduced.

In some embodiments, the electrical system 170 further includes a circuit management component 178, a power swapping connector 176, and an electrical cord 174.

The circuit management assembly 178 is electrically connected to the module collection copper bar 172, and can supply power to each battery module 160 or receive power from each battery module 160.

It should be noted that, when the number of the battery modules 160 is large and the battery modules may be damaged individually when the battery module is used for a long time, the circuit management component 178 may use the remaining battery modules 160 to continuously output a stable voltage and current value, so as to ensure the stability of the battery during operation.

The charging connector 176 is connected to a circuit management assembly 178 by wires 174, the wires 174 including a plurality of high and low voltage lines. During charging, the battery charging connector 176 is connected to the power grid or the power generation facility, and stores the electric energy in the battery module 160. During discharging, the battery replacing connector 176 releases the electric energy stored in the battery module 160 for the electric equipment.

According to the battery provided by the embodiment of the invention, the thermal management system 150 comprises a plurality of refrigerant pipes 156, the electrical system 170 comprises a plurality of electric wires 174, and the refrigerant pipes 156 and the electric wires 174 need to be separately arranged, so that mutual interference among the pipes is avoided.

In some embodiments, electrical wires 174 are located within battery case 100 on opposite sides of plurality of coolant tubes 156.

It can be appreciated that thermal management system 150 and electrical system 170 are arranged in different zones, which avoids the crossing of various pipelines, reduces the interference between the pipelines, and also reduces the difficulty of assembling the battery, and the process is simple. The battery module 160 is connected to the electrical system 170 and the thermal management system 150 on both sides, and thus, there is no need to provide an independent standard box, and there is no redundant structure in the battery case 100, so that the space utilization efficiency is high, and the energy density of the battery is high.

According to the battery provided by the embodiment of the invention, the battery needs to be transported, installed and parked when in use, so that a plurality of fixed supporting structures need to be arranged.

In some embodiments, the battery case 100 further includes a lifting assembly 120 and a support 130.

The lifting assembly 120 is disposed on a side of the plurality of sub-cases 110 away from the ground, and when the lifting assembly 120 is connected to a lifting mechanism, the battery position can be moved.

In some embodiments, the lifting assembly 120 includes a lifting frame 122, the lifting frame 122 being connected to the plurality of sub-housings 110.

It will be appreciated that the hanger frame 122 has a certain structural strength to bear the load of the plurality of sub-cases 110, the battery module, and other components. When the sub-box 110 has a certain size, the plurality of hoisting frames 122 can be provided, and the plurality of hoisting frames 122 are symmetrically connected to the plurality of sub-boxes 110, so that the overturning phenomenon can not occur during hoisting. The number of the hoisting frame 122 can be one, and at this time, the hoisting frame 122 is arranged at the center of one side of the plurality of sub-boxes 110, so that the plurality of sub-boxes 110 cannot be inclined during hoisting.

It should be noted that the hoisting frame 122 may be a specially-made hanging structure, or may be a spliced or welded steel truss structure, and the hoisting frame 122 has a plurality of hoisting sites in a horizontal plane, such as a transverse hoisting site and a longitudinal hoisting site, where the transverse direction and the longitudinal direction only represent relative positions.

The supporting member 130 is disposed on a side of the plurality of sub-cases 110 near the ground for supporting a load of the battery case 100 or the battery. The supporting member 130 is connected to the plurality of sub-cases 110, and can fix the positions of the plurality of sub-cases 110, thereby increasing the stability of the sub-cases 110 and the battery modules 160, and also preventing the sub-cases 110 or the battery modules 160 from contacting the ground, and reducing the abrasion and corrosion of the sub-cases 110 and the battery modules 160.

In some embodiments, the support member 130 is a steel truss structure, which has high strength and light weight, and is beneficial to reduce the total weight of the battery box 100.

In other embodiments, the support member 130 is a base of a unitary structure, and the size of the base is adapted to the size of the sub-housing 110.

It should be noted that the support member 130 is detachably connected to the battery case 100, for example, by bolts. In the case where the battery case 100 includes the bottom plate 140, the mounting case 142 is also bolted to the supporter 130.

In the battery system, the thermal management system 150 and the electrical system 170 are both connected to the battery box 100, and a shielding structure may be disposed to protect the thermal management system 150 and the electrical system 170 from erosion of external factors such as rain water to the electronic components and the pipelines.

In some embodiments, the hoist assembly 120 further includes a shield box 124, the shield box 124 being adapted to house the thermal management assembly 158 and/or the circuit management assembly 178.

The shielding box 124 is arranged on one side of the plurality of sub-boxes 110, the inside of the shielding box is provided with a containing space, and the heat management component 158 and/or the circuit management component 178 are/is placed in the shielding box 124, so that the interference of external environment and rainwater is avoided, the related electronic elements can stably work, and the stability and the reliability of the battery are improved.

In some embodiments, referring to fig. 1, the shielding box 124 is one in number, the shielding box 124 traverses one side of the plurality of sub-boxes 110 and has a larger volume, and the thermal management component 158, the circuit management component 178 and the water chiller unit 152 are disposed in the shielding box 124.

It should be noted that, when the water chiller unit 152 is placed in the shielding box 124, the shielding box 124 is provided with the heat dissipation hole 1242 corresponding to the water chiller unit 152, and the water chiller unit 152 releases heat to the outside through the heat dissipation hole 1242, thereby improving the heat exchange efficiency.

In other embodiments, referring to fig. 8 or 9, the shielding box 124 includes a first shielding box 124a and a second shielding box 124b, the first shielding box 124a being used to house the thermal management component 158, and the second shielding box 124b being used to house the circuit management component 178.

The first shielding box 124a and the second shielding box 124b are separately disposed, which facilitates installation and use of the thermal management assembly 158 and the circuit management assembly 178, and prevents interference between different electronic components.

In some embodiments, the second end 116 of the sub-case 110 is provided with at least one first reinforcing rib 1102, and the first reinforcing rib 1102 can improve the structural strength of the sub-case 110, so as to prevent the sub-case 110 from deforming under load.

Meanwhile, the first reinforcing rib 1102 is arranged below the mounting groove 112, and the first reinforcing rib 1102 can also be used for supporting the liquid cooling plate 154, so that the stability of the battery module 160 and the liquid cooling plate 154 is improved, and the structural strength of the battery box 100 is improved.

In other embodiments, at least one second reinforcing rib 1104 is further disposed on the side wall of the sub-tank 110, and a plurality of second reinforcing ribs 1104 are symmetrically disposed, so that the deformation resistance of the sub-tank 110 can be improved.

The adjacent sub-cases 110 are connected through the bolts 1106, and the bolts 1106 are connected to the second reinforcing ribs 1104 on the two adjacent sub-cases 110, so that the plurality of second reinforcing ribs 1104 can be connected in series end to form an integral structure, and the overall strength of the battery case 100 is improved.

It should be noted that the bolts 1106 and the second reinforcing ribs 1104 may be disposed inside or outside the sub-tank 110, and the bolts 1106 are connected to two adjacent sub-tanks 110 and two adjacent second reinforcing ribs 1104.

According to an embodiment of the present invention, a bottom plate 140 is provided at one side of the plurality of sub-housings 110, and adapted to seal the sub-housings 110 at the edge positions.

In some embodiments, a mounting box 142 is formed on the base plate 140, the mounting box 142 being adapted to receive a charging connector 176 of the electrical system 170.

The battery changing connector 176 is electrically connected to the circuit management assembly 178 through high and low voltage lines, and the circuit management assembly 178 is connected to the battery module 160 through the module collecting copper bar 172. The battery replacing connector 176 can charge the battery module 160 and can also supply power to the power utilization element, and the battery replacing connector is integrated with the bottom plate 140, so that the space of the battery box 100 is saved, and the space utilization rate is improved.

According to a second aspect of the present invention, there is provided an electric working machine including the battery according to the first aspect of the present invention.

In the electric working machine, a plurality of rows and/or a plurality of columns and/or a plurality of layers of the battery modules 160 may be provided in the battery case 100, so that the energy density of the battery can be increased. The battery does not need to be provided with an independent standard box, unnecessary structures are reduced, the space utilization rate is high, and meanwhile, the pipeline arrangement in the battery box body 100 is managed in a unified mode, so that the condition of pipeline intersection is reduced. The liquid cooling plate 154 is inserted into the mounting groove 112, and the liquid cooling plate 154 is not only used for fixing the battery module 160, but also has a temperature control function, so that the thermal management system 150 is fully combined with the battery box 100, the space utilization rate is improved, and the difficulty of pipeline arrangement is reduced.

In summary, according to the battery and the electric working machine provided by the embodiment of the present invention, the battery includes the battery case 100, the thermal management system 150, the electrical system 170, and the battery module 160; a plurality of mounting grooves 112 suitable for placing liquid cooling plates 154 are formed in the battery case 100; the thermal management system 150 comprises a plurality of liquid cooling plates 154, wherein the plurality of liquid cooling plates 154 are arranged in the battery box body 100 and are inserted into the installation grooves 112 in a one-to-one correspondence manner; the battery module 160 is disposed in the battery case 100 and connected to the liquid cooling plate 154; the electrical system 170 includes module collection copper bars 172, and the module collection copper bars 172 are electrically connected to each battery module 160. The liquid cooling plate 154 not only plays a heat exchange role, but also is used for fixing the battery module 160, the liquid cooling plate 154 and the module collection copper bar 172 are integrated together, a plurality of standard boxes are not required to be placed in a frame system, the structural redundancy is reduced, the space utilization rate of the battery is high, the overall energy density is high, the process is simple, and the reliability is high.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A battery, comprising:

the battery box body is internally provided with a plurality of mounting grooves which are arranged in parallel;

the heat management system comprises a plurality of liquid cooling plates, the liquid cooling plates are arranged in the battery box body and are correspondingly inserted into the mounting grooves one by one;

the battery modules are arranged in the battery box body and connected to the liquid cooling plate;

the electrical system comprises module collection copper bars, and the module collection copper bars are electrically connected to each battery module.

2. The battery of claim 1, wherein the battery case comprises:

the sub-box bodies are of a cylindrical structure with two through ends, are arranged in parallel and are internally communicated, and the mounting groove is formed in each sub-box body;

the bottom plate is arranged on one side of the plurality of the sub-boxes and is suitable for sealing the sub-boxes positioned at the edge positions, and the plurality of the sub-boxes and the bottom plate are hermetically connected with the sub-boxes.

3. The battery of claim 2, wherein the sub-case includes opposing first and second ends, the first end being formed with a seal groove adapted to receive the second end of another sub-case.

4. The battery of claim 1, wherein the inner wall of the battery case is further provided with an insulating layer.

5. The battery of any of claims 1-4, wherein the thermal management system further comprises:

the water cooling unit is arranged on the outer side of the battery box body and is connected to the battery box body;

the heat management component is electrically connected to the water chiller;

and the plurality of refrigerant pipes are communicated with the water cooling unit and the liquid cooling plate and are positioned on one side in the battery box body.

6. The battery of claim 5, wherein the electrical system further comprises:

the circuit management component is electrically connected with the module collection copper bar;

and the battery replacement connector is connected to the circuit management assembly through an electric wire.

7. The battery of claim 6, wherein the wires are located within the battery case and on opposite sides of the plurality of coolant tubes.

8. The battery of claim 2 or 3, wherein the battery case further comprises:

the hoisting assembly is arranged on one side of the plurality of sub-box bodies, which is away from the ground, and is connected to the plurality of sub-box bodies;

and the supporting piece is arranged on one side of the plurality of sub-boxes facing the ground and is connected with the plurality of sub-boxes.

9. The battery of claim 8, wherein the hoist assembly comprises:

the hoisting frame is connected to the plurality of sub-boxes;

and the shielding box is connected to the plurality of sub-box bodies and is suitable for placing the heat management assembly and/or the circuit management assembly.

10. An electric working machine, characterized by comprising a battery according to any one of claims 1 to 9.

Images