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CN-224217615-U - Battery pack and electric equipment

CN224217615UCN 224217615 UCN224217615 UCN 224217615UCN-224217615-U

Abstract

The utility model relates to the technical field of batteries and discloses a battery pack and electric equipment, wherein the battery pack is provided with a first direction, a second direction and a third direction which are perpendicular to each other, and comprises a box body, a shell, a plurality of electric cores and a battery control system; the box body comprises a bottom plate, edge beams, a first cover body and a first liquid cooling plate, wherein the bottom plate, the edge beams and the first cover body jointly enclose to form an accommodating space, the first liquid cooling plate divides the accommodating space into a first cavity and a second cavity which are stacked along a third direction, the first cavity is located between the first cover body and the first liquid cooling plate, the second cavity is located between the bottom plate and the first liquid cooling plate, the shell and the first cover body enclose to form a third cavity, a plurality of battery cells are arranged in the first cavity, the battery control system comprises a battery slave control and a battery master control which are connected with each other, the battery slave control is arranged in the first cavity and electrically connected with the battery cells, and the battery master control is arranged in the third cavity. The battery pack solves the problem that the arrangement space of the battery pack cell layer is limited.

Inventors

  • FANG WEIJIA
  • LUO ZHENG

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250509

Claims (10)

  1. 1. A battery pack having a first direction (X), a second direction (Y) and a third direction (Z) perpendicular to each other is characterized by comprising a case (10), a housing (30), a plurality of battery cells (21) and a battery control system (40); The box body (10) comprises a bottom plate (11), side beams (12), a first cover body (13) and a first liquid cooling plate (14), wherein the bottom plate (11) and the first cover body (13) are respectively arranged on two opposite sides of the side beams (12) along the third direction (Z), the bottom plate (11), the side beams (12) and the first cover body (13) jointly enclose to form a containing space, the first liquid cooling plate (14) is connected with the side beams (12) and is arranged between the first cover body (13) and the bottom plate (11), the first liquid cooling plate (14) divides the containing space into a first cavity (101) and a second cavity (102) which are stacked along the third direction (Z), the first cavity (101) is positioned between the first cover body (13) and the first liquid cooling plate (14), and the second cavity (102) is positioned between the bottom plate (11) and the first liquid cooling plate (14) and the first cavity (102) is communicated with the first cavity (101); The shell (30) is arranged on one side, far away from the bottom plate (11), of the first cover body (13) along the third direction (Z), and the shell (30) and the first cover body (13) are surrounded to form a third cavity (301); The plurality of electric cores (21) are arranged in the first cavity (101), and the plurality of electric cores (21) are adhered to one side of the first liquid cooling plate (14) along the third direction (Z); The battery control system (40) comprises a battery slave control (41) and a battery master control (42) which are connected with each other, wherein the battery slave control (41) is arranged in the first cavity (101) and is electrically connected with the plurality of battery cells (21), and the battery master control (42) is arranged in the third cavity (301).
  2. 2. The battery pack according to claim 1, wherein the side beam (12) comprises a first beam (121), the first beam (121) being located at a side of the side beam (12) in the second direction (Y), the first beam (121) extending in the first direction (X), the battery slave (41) being fixedly connected to a side of the first beam (121) facing the battery cell (21).
  3. 3. The battery pack according to claim 2, further comprising a buss bar (50), the buss bar (50) being built into the first cavity (101), the buss bar (50) extending in the first direction (X); The battery slave (41) is provided with a support part (411) along the second direction (Y) towards one side of the first beam (121), and the support part (411) is suitable for fixedly supporting the busbar (50).
  4. 4. The battery pack according to claim 2, wherein the housing (30) is disposed opposite the first beam (121) along the third direction (Z).
  5. 5. The battery pack according to claim 4, further comprising a second liquid cooling plate (33), the second liquid cooling plate (33) having a second cooling flow passage (3301), the second liquid cooling plate (33) being disposed in the third chamber (301) and on a side of the first cover (13) facing the housing (30).
  6. 6. The battery pack according to claim 4, wherein the first cover (13) has a third cooling flow passage (1301).
  7. 7. The battery pack according to claim 5, wherein the first beam (121) has a fourth cavity (1201) therein, the fourth cavity (1201) being in communication with the second cavity (102); An explosion-proof opening (1202) is formed in one side, away from the first cavity (101), of the first beam (121), the explosion-proof opening (1202) is communicated with the fourth cavity (1201), the box body (10) further comprises a second explosion-proof valve (16), and the second explosion-proof valve (16) is mounted on the explosion-proof opening (1202).
  8. 8. The battery pack according to claim 7, wherein the case (10) further comprises a cover (17), the cover (17) is disposed on a side of the first beam (121) facing away from the first cavity (101) and covers the second explosion-proof valve (16), and an opening (171) is formed on a side of the cover (17) facing away from the case (30).
  9. 9. The battery pack according to any one of claims 1-8, wherein the housing (30) comprises a housing body (31) and a second cover (32), the housing body (31) having opposite sides in the third direction (Z), wherein one side is connected to the first cover (13) and the other side has an access opening (3101), the access opening (3101) being in communication with the third cavity (301), and the second cover (32) being connected to the housing body (31) by means of bolts and/or screws, the second cover (32) being adapted to cover the access opening (3101).
  10. 10. A powered device comprising a battery pack as claimed in any one of claims 1 to 9.

Description

Battery pack and electric equipment Technical Field The utility model relates to the technical field of batteries, in particular to a battery pack and electric equipment. Background The battery pack can provide stable and high-energy-density direct-current electric energy for electric automobiles, energy storage systems, portable electronic equipment and the like, and the design of the battery pack is important for realizing high-efficiency, safe and economic use of the battery. The capacity of the Battery pack is limited by the number of Battery cells, and the Battery pack has a Battery control system in addition to the Battery cell modules, wherein the Battery control system comprises a Battery distribution unit (Battery Distribution Unit, BDU), a Battery management system (Battery MANAGEMENT SYSTEM, BMS) and the like, and the Battery control system is generally arranged in front of the Battery pack and is located in the same layer space with the Battery cells. Since the installation space of the vehicle body is generally limited in terms of the lateral dimension of the battery pack, the area of the correspondingly placed battery cells is also limited, thereby limiting the number of battery cells that can be accommodated, resulting in a limited capacity of the battery pack. Disclosure of utility model In view of the above, the utility model provides a battery pack and electric equipment to solve the problem that the arrangement space of a battery core layer in the battery pack is limited. In a first aspect, the utility model provides a battery pack, which is provided with a first direction, a second direction and a third direction which are perpendicular to each other, and comprises a box body, a shell, a plurality of battery cells and a battery control system; The box body comprises a bottom plate, side beams, a first cover body and a first liquid cooling plate, wherein the bottom plate and the first cover body are respectively arranged at two opposite sides of the side beams along a third direction, and the bottom plate, the side beams and the first cover body are jointly enclosed to form an accommodating space; The shell is arranged on one side, far away from the bottom plate, of the first cover body along the third direction, and a third cavity is formed by surrounding the shell and the first cover body; The plurality of electric cores are arranged in the first cavity, and are bonded with one side of the first liquid cooling plate along the third direction; The battery control system comprises a battery slave control and a battery master control which are connected with each other, wherein the battery slave control is arranged in the first cavity and is electrically connected with the plurality of battery cells, and the battery master control is arranged in the third cavity. The battery pack has the beneficial effects that the first cavity, the second cavity and the third cavity are formed by layering and isolating the box body along the third direction Z, wherein the first cavity is suitable for accommodating the battery cell and the battery slave control, the second cavity can be used as an exhaust channel, the third cavity is positioned at one side of the first cavity far away from the second cavity and is used for accommodating the battery master control, the second cavity is communicated with the first cavity and is used for collecting the battery cell emission, the high-temperature gas can be directly guided to the direction of the box body far away from the battery master control, the heat radiation and damage to key electric components are reduced, more installation space is reserved for the battery cell, the whole layout and structure of the battery pack are optimized, and the problem that the installation space of a battery cell layer in the battery pack is limited is solved. In an alternative embodiment, the side beam includes a first beam located on a side of the side beam in the second direction, the first beam extending in the first direction, the battery slave being fixedly connected to a side of the first beam facing the battery cell. The battery secondary control device has the advantages that the battery secondary control device is fixedly connected to the first beam, on one hand, the structural rigidity of the battery secondary control device is improved, the influence of vibration and impact on the battery secondary control device is reduced, on the other hand, when the battery secondary control device is required to be maintained or replaced, the battery secondary control device can be easily detached from the first beam, the whole battery pack is not required to be disassembled, the maintenance efficiency is improved, on the other hand, the occupation of the battery secondary control device to the transverse space of the battery pack can be reduced, and therefore more installation space is reserved for the battery cell. In an alternative embodiment, the battery pack further inclu